CN202382994U - Novel full-automatic sample gas safe processing device - Google Patents
Novel full-automatic sample gas safe processing device Download PDFInfo
- Publication number
- CN202382994U CN202382994U CN2011205071147U CN201120507114U CN202382994U CN 202382994 U CN202382994 U CN 202382994U CN 2011205071147 U CN2011205071147 U CN 2011205071147U CN 201120507114 U CN201120507114 U CN 201120507114U CN 202382994 U CN202382994 U CN 202382994U
- Authority
- CN
- China
- Prior art keywords
- appearance
- water cooler
- gas
- automatic
- sample gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Drying Of Gases (AREA)
Abstract
The utility model relates to the field of gas analysis, particularly discloses a novel full-automatic sample gas safe processing device which is applicable in the fields of high-dust, high-temperature, high-oil mist, high-water, and high-pressure and medium-pressure conditions. The novel full-automatic sample gas safe processing device comprises a sample gas lead-in pipe, a sample gas water cooler, a sample gas separator, an automatic drainage device and a drainage outlet; and electromagnetic switches are arranged between the sample gas lead-in pipe and the water cooler, between the sample gas water cooler and a clean sample gas outlet, between a globe valve at a cooling water inlet and a three-way pipe, between a three-way pipeline of the cooling water inlet and the automatic drainage device and between the sample gas separator and the automatic drainage device. The novel full-automatic sample gas safe processing device has the advantages that: when the water cooler leaks sample gas with pressure, the conductance output value of a conductance sensor is greatly changed in a cooling water outlet in a shell-and-tube double-throttle expansion water cooler. The change is transmitted to a programmable logic controller (PLC) through a conductivity meter transducer, the PLC controls relevant electromagnetic valves to be interlocked, so that the analysis result in an on-line analysis complete system is not seriously distorted.
Description
Technical field
The utility model relates to the gas analysis field; Be to be applicable to explosion-proof scenes such as petrochemical complex, gas chemical industry, Coal Chemical Industry, metallurgy, pharmacy, environmental protection, be specially adapted to the new automatic appearance of the safety-type gas secure processing device in high dust, high temperature, high mist of oil, high-moisture, high pressure condition field.
Background technology
In the existing appearance gas disposal device; Widely used water cooler cooling appearance gas; Leak if under elevated pressures, can unavoidably produce in the application process or because of the part quality problem or in maintenance scale removal process or in long-term the use; In case leak, cause the on-line analysis data to produce serious distortion, cause the explained hereafter maloperation.If appearance gas itself contains combustibility, toxic gas, cause serious potential safety hazard to process units with the flammable toxic gas of cooling-water drain to trench.If this type gas gets in the chilled water networking that flow circuit uses, directly causes serious accident and personal safety accident for process units.Cause extremely serious consequence to enterprise.
In the appearance gas under the HTHP high water content, if carry amounts of dust secretly, very easily stop up the appearance air pipe, cause on-line analysis to interrupt, this type gas adopts general filter method and back-flushing technique often can not satisfy request for utilization.
Carry the appearance gas of a large amount of dust under the high temperature secretly, in the cooled appearance of water cooler gas, condensation goes out a large amount of liquid moisture, adopts the automatic safe excretion machine to carry out aqueous vapor and separates, and can carry out safe blowdown to moisture.If the pressure of appearance gas own is higher, select the higher automatic pollution discharge device of ability compression resistance for use, the liquid that condensation is separated out carries out safe blowdown.Its principle of work is the stainless steel ball that adopts a lever to support, and under anhydrous situation, gas is closed at this through lever.In case when water was arranged, ball was by means of buoyancy of water, water discharges through sewage draining exit automatically.After water drained, ball restored to the original state, and stoped gas passage discharge from then on.In a single day a large amount of dust in the appearance gas pour in the automatic pollution discharge device, will cause drainage channel to stop up, and can not normally discharge.In case this channel jam, the equal cisco unity malfunction of other processing element in the appearance gas disposal device.Carry the cleaning appearance gas that causes very soon exporting secretly a large amount of dust, and stop up outlet conduit, appearance gas disposal device can be compelled to stop transport very soon.
And under the practical working situation of some environment under low pressure, also there be easy the leakage and the easy problem of stopping up, can not normally discharging of blowdown in existing appearance gas secure processing device.
Like application number is 200810069516.6; The applying date is on March 25th, 2008; Name is called the utility application of " intrinsically safe type sample gas processing system ", and this utility model technical scheme discloses a kind of intrinsically safe type sample gas processing system, comprises kind gas harvester and appearance gas disposal device.Appearance gas harvester comprises removable sampling probe and pneumatic sampling pump, and said appearance gas disposal device comprises water cooling de-watering apparatus, self-cleaning style air filter and infiltration style air dry device.Said removable sampling probe, water cooling de-watering apparatus, self-cleaning style air filter, infiltration style air dry device are connected with pneumatic sampling pump in order successively.Though above-mentioned utility model patent has been made the change on structure and the connected mode for probe, water cooling plant and appearance air filter; If but do not have appearance gas disposal device, the water cooling plant of extensive existence are leaked, and solved by the dust blocking problem in the appearance gas disposal device.
Summary of the invention
Has appearance gas with pressure; If liquid water content is high; Need appearance gas to be cooled off through water cooler or other cooling devices; The water cooler or other cooling devices that particularly high temperature, high pressure, high dust, high-moisture greasy dirt appearance gas are cooled off, or produce because of quality problems or in maintenance scale removal process or in long-term the use and to leak and the blocked extensive existence of gas circuit, and fail the problem that effectively solves so far; To propose a kind of security performance high at present, can avoid the new automatic appearance gas secure processing device of kind gas leakage and obstruction.
The technical scheme that the utility model adopted is following:
A kind of new automatic appearance gas secure processing device; Comprise a kind gas inlet tube, appearance air water cooler, appearance gas separating device and automatic pollution discharge device and sewage draining exit; Each part mentioned above is communicated with successively; Appearance air water cooler is connected with the outlet of cleaning appearance gas, and the appearance gas separating device also is connected with the quick loop of the torch burning and exhausting pipe that reduces internal heat, and appearance air water cooler also is provided with cooling water inlet pipe and coolant outlet; Be provided with between said appearance gas inlet tube and the appearance air water cooler that first solenoid valve, appearance air water cooler are provided with second solenoid valve between exporting with cleaning appearance gas, the cooling water inlet is managed and is connected with first stop valve, the 4th solenoid valve, threeway in turn; Be provided with the 5th solenoid valve between threeway and the automatic pollution discharge device; Be provided with the 3rd solenoid valve between appearance gas separating device and the automatic pollution discharge device; The coolant outlet place is provided with the conductivity meter sensor; The conductivity meter sensor links to each other with the conductivity meter transmitter, the conductivity meter transmitter links to each other through cable with programmable logic controller (PLC) PLC, and said automatic pollution discharge device is provided with water inlet and water delivering orifice, is provided with the stainless steel or the engineering plastics ball that adopt lever to support between water inlet and the water delivering orifice.
Appearance air water cooler is provided with tubulation arranged side by side for shell and tube binodal stream swelling water cooler in the said water cooler parts, is arranged with the throttling expansion cavity on the tubulation.
Be connected in series between appearance air water cooler and the cooling water inlet pipe and be provided with chilled water first stop valve, the 4th solenoid valve, threeway, the threeway other end passes through solenoid valve and links to each other with the automatic pollution discharge device.
The chilled water that gets into appearance air water cooler is gone into water cooler through chilled water first stop valve, the 4th solenoid valve, threeway are laggard successively, and another path of threeway gets into the automatic pollution discharge device through the respective electrical magnet valve.
Solenoid valve by PLC control has five; Set the said solenoid valve of logic control program through PLC, respectively control appearance gas go into out in normal operation, between the entering of the timing flushing of automatic pollution discharge device and chilled water and cut-out, appearance gas separating device and the automatic pollution discharge device to the appearance gas break-make of discharging band liquid dust.
Be provided with needle-valve between appearance air water cooler and the appearance gas separating device.
Appearance gas inlet tube is of a size of φ 1/4 "～1 ".
Shell and tube binodal stream swelling water cooler specification is φ 100～φ 500, and the water cooling stainless steel tubulation specification in the shell and tube binodal stream swelling water cooler is φ 1/4 " ~ φ 1/2 ".
The advantage of the utility model is:
1, when band pressure appearance gas leakage takes place water cooler, in the coolant outlet in the shell and tube binodal stream swelling water cooler, the electricity of conductivity sensor is led output valve generation great change.This variation is sent to PLC through the conductivity meter transmitter, and PLC control associated solenoid valve interlocking is effectively avoided the serious distortion of analysis result in the on-line analysis integrated system.Otherwise will cause the error of manual shift technology, seriously unbalance by computer close-loop control technology, even cause technology interlocking dire consequences, cause heavy losses to production.This device can effectively be avoided because of leaking the catastrophic effect of initiation.
2, the automatic pollution discharge device can realize effectively that aqueous vapor, greasy dirt, dust and appearance gas separate.
3, adopt shell and tube binodal stream swelling water cooler, in narrow space, can high-temperature sample gas fully be cooled off.In binodal stream expansion chamber structure, through physical method, can appearance gas further be cooled off, reduce consumption of cooling-water.
4, when the automatic pollution discharge device is blocked by too much dust; Drawing one road chilled water through the threeway on the chilled water oral siphon gets in the automatic pollution discharge device through solenoid valve; Dust content what, periodically to the bath of automatic pollution discharge device, the dust that is deposited on this is given off automatically according to through the PLC control electromagnetic valve; It is unimpeded to guarantee to discharge the dust aquaporin, realizes the safe operation of full-automatic appearance gas disposal long period.
5, the automatic pollution discharge device is applicable to high dust, high temperature, high mist of oil, high-moisture, high pressure environment.
Description of drawings
Fig. 1 is the utility model structural representation.
In the accompanying drawing a kind of gas inlet tube, 2 first solenoid valves, 3 kinds of air water coolers; 4 water cooling stainless steel tubulations, 5 second solenoid valves, 6 cleaning appearance gas outlets, 7 needle-valves, 8 kinds of gas separating devices, 9 reduce internal heat torch burning and exhausting pipe, 10 the 3rd solenoid valves, 11 automatic pollution discharge devices, 12 sewage draining exits, 13 cooling water inlets pipe, 14 chilled waters, first stop valve, 15 the 4th solenoid valves, 16 threeways, 17 the 5th solenoid valves, 18 chilled waters, second stop valve, 19 coolant outlets, 20 conductivity meter sensors, 21 conductivity meter transmitters, 22PLC.
Embodiment
New automatic appearance gas secure processing device; Comprise a kind gas inlet tube 1, appearance air water cooler 3, appearance gas separating device 8 and automatic pollution discharge device 11 and sewage draining exit 12; Each part mentioned above is communicated with successively; Appearance air water cooler 3 is connected with cleaning appearance gas outlet 6; Appearance gas separating device 8 also is connected with the quick loop of the torch burning and exhausting pipe 9 that reduces internal heat; Appearance air water cooler 3 also is provided with cooling water inlet pipe 13 and coolant outlet 19; Be provided with between said appearance gas inlet tube 1 and the appearance air water cooler 3 to be provided with between first solenoid valve 2, appearance air water cooler 3 and the cleaning appearance gas outlet 6 and be provided with the 4th solenoid valve 15, cooling water inlet between second solenoid valve 5, cooling water inlet first stop valve 14 and the threeway 16 and manage 13 and be connected in series to be provided with between path threeway 16 and the automatic pollution discharge device 11 between the 5th solenoid valve 17, kind gas separating device 8 and the automatic pollution discharge device 11 and be provided with the 3rd solenoid valve 10; Coolant outlet 19 places are provided with conductivity meter sensor 20, and conductivity meter sensor 20 links to each other with conductivity meter transmitter 21, conductivity meter transmitter 21 links to each other through cable with programmable logic controller (PLC) PLC22.
Appearance air water cooler 3 is provided with tubulation arranged side by side for shell and tube binodal stream swelling water cooler in the said water cooler parts, is arranged with the throttling expansion cavity on the tubulation.Between managing 13, appearance air water cooler 3 and cooling water inlet be serially connected with chilled water first stop valve 14, the 4th solenoid valve 15, threeway 16.Threeway 16 other ends link to each other with automatic pollution discharge device 11 through the 5th solenoid valve 17.Solenoid valve by PLC22 control has five; Set the said solenoid valve of logic control through PLC22, respectively the 5th solenoid valve 17 of the timing flushing of control appearance gas first solenoid valve 2,5 of going into out, automatic pollution discharge device 11 and the entering and the cut-out of chilled water first stop valve 14 in normal operation.Be provided with needle-valve 7 between appearance air water cooler 3 and the appearance gas separating device 8.Appearance gas inlet tube 1 is of a size of φ 1/4 "～1 ".Shell and tube binodal stream swelling water cooler specification is φ 100～φ 500, and water cooling stainless steel tubulation 4 specifications in the shell and tube binodal stream swelling water cooler are φ 1/4 " ~ φ 1/2 ".
Automatic pollution discharge device 11 is provided with water inlet and water delivering orifice, is provided with the stainless steel ball that adopts lever to support between water inlet and the water delivering orifice.
HTHP, high dust, high-moisture greasy dirt appearance gas is " ~ φ, 1 " inlet tube 1 through φ 1/2, introduces in the shell and tube binodal stream swelling water cooler 3 through first solenoid valve 2 again; After appearance gas gets into the throttling expansion upper cavity; Appearance gas gets in the tubulation 4, under the water quench state that outside tubulation, flows, and the moisture in kind gas that is cooled; Mist of oil is condensed and separates out, and the condensation lye flows into shell and tube binodal stream swelling water cooler lower chamber with a large amount of dust in the appearance gas under action of gravity.Cleaning appearance gas upwards flows, and is seen off through second solenoid valve 5, supplies the further purified treatment of appearance gas.The condensed fluid of carrying a large amount of dust secretly and appearance gas are again through behind the controlled discharging needle-valve 7; Get in the appearance gas separating device 8; The condensed fluid of carrying dust secretly separates at this with appearance gas, and appearance gas will discharge in the torch loop pipe network in the appearance gas introducing process units through controlled discharging needle-valve 7 and burn.Moisture greasy dirt that in appearance gas separating device 8, is separated and dust are introduced in the automatic pollution discharge device 11 through the 3rd solenoid valve 10, discharge through floss hole 12 again.
Cooling water inlet pipe 13 passes through chilled water first stop valve 14 again behind the 4th solenoid valve 15; In threeway 16 introducing shell and tube binodal stream swelling water coolers 3, the appearance gas in the tubulation is cooled off; Coolant outlet 19 is disposed to trench or gets into the chilled water pipe network through supercooled water second stop valve 18 and circulates use, or carries out chilled water and reclaim.Be provided with the sensor of a conductivity transmitter 20 in cooling-water drain outlet opening 19 lower ends, be used to detect the water quality of chilled water.Because the appearance atmospheric pressure is higher than the hydraulic pressure of chilled water; The appearance gas of shell and tube binodal stream swelling water cooler in use leaks if produce; Conductivity transmitter 20 electricity are led and are changed, if appearance is contained combustibility in the gas poison gas property gas are arranged, this flammable toxic gas no matter with cooling-water drain to trench; To cause major safety risks to process units; If appearance gas gets into along with the chilled water that recycles in the pipe network of process units, these flammable toxic gases flow to each production equipment with recirculated cooling water, will cause great safety and murder by poisoning accident to process units.The variable quantity of this conductivity meter is sent to PLC22 through conductivity meter transmitter 21, and PLC22 in time will change accident information unusually and be sent to and send security alarm information in DCS and the central control room.Avoid serious accident to take place.PLC22 in time interlocks to send to instruct first solenoid valve 2,5,10,15 is ended simultaneously, prevents that serious accident and intoxication accident from taking place.Can under high pressure, work in the automatic pollution discharge device 11, stainless steel or engineering plastics georama that its inside has lever to support, under anhydrous situation gas through self pressure with 12 sealings of appearance gas sewage draining exit.In case when water was arranged, ball was by means of buoyancy of water, water discharges through sewage draining exit 12 automatically.After water drained, ball recovered the sealing excretion machine, stoped gas to be discharged from the excretion machine passage.In a single day a large amount of dust of appearance in the gas pour in the automatic pollution discharge device 11, and dust changes ball buoyancy to cause drainage channel to stop up.In case this situation appearance gas separating device 8 cisco unity malfunctions occur; Torch burning and exhausting pipe 9 and the equal cisco unity malfunction of shell and tube binodal stream swelling water cooler reduce internal heat; And the cleaning appearance gas that will be very soon cause exporting carries a large amount of dust secretly and flows out, and further stops up outlet conduit, very fast compelled stoppage in transit of device.Draw one road chilled water through the threeway on the chilled water oral siphon 13 16 and send the water flushing, the dust that is deposited on this is given off automatically through the 5th solenoid valve 17 entering automatic pollution discharge devices 11.Guarantee that the dust that is deposited in the automatic pollution discharge device 11 is discharged from, realize the sampler long period safe operation of full-automatic appearance gas.
Device is used for explosion-proof production scenes such as explained hereafter device such as flammable, poisonous petrochemical complex, gas chemical industry, Coal Chemical Industry, metallurgy, pharmacy and environmental protection; The solenoid valve of configuration, conductivity meter, PLC22 control system etc. all need dispose all kinds of explosion-proof parts that meet explosion-proof on-the-spot class requirement.
Claims (8)
1. new automatic appearance gas secure processing device; Comprise a kind gas inlet tube (1), appearance air water cooler (3), appearance gas separating device (8) and automatic pollution discharge device (11) and sewage draining exit (12); Each part mentioned above is communicated with successively; Appearance air water cooler (3) is connected with cleaning appearance gas outlet (6); Appearance gas separating device (8) also is connected with the quick loop of the torch burning and exhausting pipe (9) that reduces internal heat; Appearance air water cooler (3) also is provided with cooling water inlet pipe (13) and coolant outlet (19); It is characterized in that: be provided with between said appearance gas inlet tube (1) and the appearance air water cooler (3) first solenoid valve (2), appearance air water cooler (3) export with cleaning appearance gas be provided with second solenoid valve (5) between (6), the cooling water inlet is managed (13) and is connected with first stop valve (14) in turn, the 4th solenoid valve (15), threeway (16); Be provided with the 5th solenoid valve (17) between threeway (16) and the automatic pollution discharge device (11); Be provided with the 3rd solenoid valve (10) between appearance gas separating device (8) and the automatic pollution discharge device (11); Coolant outlet (19) locates to be provided with conductivity meter sensor (20); Conductivity meter sensor (20) links to each other with conductivity meter transmitter (21), conductivity meter transmitter (21) links to each other through cable with programmable logic controller (PLC) PLC (22); Said automatic pollution discharge device (11) is provided with water inlet and water delivering orifice, is provided with the stainless steel or the engineering plastics ball that adopt lever to support between water inlet and the water delivering orifice.
2. new automatic appearance gas secure processing device according to claim 1; It is characterized in that: said appearance air water cooler (3) is shell and tube binodal stream swelling water cooler; Be provided with tubulation arranged side by side in the said water cooler parts, be arranged with the throttling expansion cavity on the tubulation.
3. new automatic appearance gas secure processing device according to claim 2; It is characterized in that: said appearance air water cooler (3) is managed to be connected in series between (13) with the cooling water inlet and is provided with chilled water first stop valve (14), the 4th solenoid valve (15), threeway (16), and threeway (16) other end links to each other with automatic pollution discharge device (11) through solenoid valve (17).
4. new automatic appearance gas secure processing device according to claim 3; It is characterized in that: the said chilled water that gets into appearance air water cooler is gone into water cooler through chilled water first stop valve (14), the 4th solenoid valve (15), threeway (16) are laggard successively, and another path of threeway (16) is through respective electrical magnet valve (17) entering automatic pollution discharge device (11).
5. new automatic appearance gas secure processing device according to claim 4; It is characterized in that: said solenoid valve by PLC (22) control has five; Set the said solenoid valve of logic control program through PLC (22), kind gas break-make of liquid dust is gone into out, discharging is with between the entering of the timing flushing of automatic pollution discharge device (11) and chilled water and cut-out, appearance gas separating device (8) and the automatic pollution discharge device (11) to control appearance gas in normal operation respectively.
6. according to any described new automatic appearance gas secure processing device of claim 1-5, it is characterized in that: be provided with needle-valve (7) between said appearance air water cooler (3) and the appearance gas separating device (8).
7. according to any described new automatic appearance gas secure processing device of claim 1-5, it is characterized in that: said appearance gas inlet tube (1) is of a size of φ 1/4 "～1 ".
8. according to any described new automatic appearance gas secure processing device of claim 2-5; It is characterized in that: said shell and tube binodal stream swelling water cooler specification is φ 100～φ 500, and water cooling stainless steel tubulation (4) specification in the shell and tube binodal stream swelling water cooler is φ 1/4 " ~ φ 1/2 ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205071147U CN202382994U (en) | 2011-12-08 | 2011-12-08 | Novel full-automatic sample gas safe processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205071147U CN202382994U (en) | 2011-12-08 | 2011-12-08 | Novel full-automatic sample gas safe processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382994U true CN202382994U (en) | 2012-08-15 |
Family
ID=46631489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205071147U Expired - Lifetime CN202382994U (en) | 2011-12-08 | 2011-12-08 | Novel full-automatic sample gas safe processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564820A (en) * | 2011-12-08 | 2012-07-11 | 成都市倍诚分析技术有限公司 | Full-automatic sample gas safe processing device |
-
2011
- 2011-12-08 CN CN2011205071147U patent/CN202382994U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564820A (en) * | 2011-12-08 | 2012-07-11 | 成都市倍诚分析技术有限公司 | Full-automatic sample gas safe processing device |
| CN102564820B (en) * | 2011-12-08 | 2014-05-07 | 成都市倍诚分析技术有限公司 | Full-automatic sample gas safe processing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201514345U (en) | On-line analysis sample pretreatment device | |
| CN105781629A (en) | Control method of steam turbine steam pipeline drain valve of power station | |
| CN102564820B (en) | Full-automatic sample gas safe processing device | |
| CN201955252U (en) | Sampling system for liquid in pipeline | |
| CN102121569A (en) | Liquid sealing device for centralized liquid drainage of gas conduit | |
| CN202382995U (en) | Fully automatic sample gas security processing device | |
| CN202382994U (en) | Novel full-automatic sample gas safe processing device | |
| CN111594760A (en) | Integrated integrated device suitable for natural gas collection | |
| CN211010414U (en) | Anti-blocking pipeline system and urea production system | |
| CN203224373U (en) | Anti-coagulating desulfuration sampling device | |
| CN102313138B (en) | Online density measurement method of petroleum transmission pipeline | |
| CN204785574U (en) | Device of torch trachea line lime set is collected, discharged | |
| CN205156976U (en) | Automatically cleaning flow detection device | |
| CN109321700A (en) | A kind of blast furnace cooling wall breakage detection separation method | |
| CN212008497U (en) | Self-cleaning type multi-path gas comprehensive monitoring device | |
| CN114113549A (en) | Online monitoring and purifying operation integrated system for lubricating oil and liquid of hydroelectric generating set | |
| CN204085307U (en) | One is exempted to unpick and wash chiller system | |
| CN104019360B (en) | Self-control type energy-saving heat tracing system | |
| CN203083818U (en) | Comprehensive testing device for agricultural irrigation filter | |
| CN207112377U (en) | Automatic-discharging filter | |
| CN210411800U (en) | Dredging device for pressure guide pipe of orifice plate flowmeter | |
| CN111257520A (en) | Self-cleaning type multi-path gas comprehensive monitoring method and device | |
| CN214654676U (en) | Improved generation liquid hydrocarbon dewatering equipment | |
| CN203644730U (en) | Cooling water supply device with air discharge | |
| CN1851468B (en) | Positive pressure type sample gas on-line analysis complete discharge and safety system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |
|
| CX01 | Expiry of patent term |