CN108843552A - A kind of condenser vacuum pump exhaust hydrogen gas measuring device - Google Patents
A kind of condenser vacuum pump exhaust hydrogen gas measuring device Download PDFInfo
- Publication number
- CN108843552A CN108843552A CN201810635471.8A CN201810635471A CN108843552A CN 108843552 A CN108843552 A CN 108843552A CN 201810635471 A CN201810635471 A CN 201810635471A CN 108843552 A CN108843552 A CN 108843552A
- Authority
- CN
- China
- Prior art keywords
- dehumidifier
- gas
- filter
- hydrogen
- hydrogen 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/003—Arrangements for measuring or testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A kind of condenser vacuum pumps exhaust hydrogen gas measuring device, it includes being equipped with grade one filter in the entrance of device, at least one is connected to behind grade one filter using compressor refrigeration or/and the dehumidifier of electronic cooling, and tested gas temperature is made to be down to 3.8 DEG C；Dehumidifier lower part is equipped with the collector tube with drain valve；An at least aspiration pump is connected to behind dehumidifier, the outlet of aspiration pump is serially connected with an at least suspended body flowmeter and a drier；The joining distal ends of device have the sensing chamber for being mainly equipped with hydrogen gas concentration analyzer；Dehumidifier is two compositions in parallel, and the combination dehumidifier of changeable forked working is made up of pipeline and valve, and the lower part of each dehumidifier is respectively connected to a collector tube for having drain valve；Drier uses silica dehydrator pipe, tested gas humidity is further decreased using silica gel absorption effect, one is respectively connected on the front and back connecting line of drier and is conveniently tested the adjusting of gas flow, the suspended body flowmeter for keeping tested gas flow stable using transparent float.
Description
Technical field
The present invention relates to a kind of condenser vacuum pump exhaust hydrogen gas measuring device, be mainly used for calculate boiler high temperature by
Hot surface oxidized skin growth rate, belongs to super（It is super）The condenser vacuum pump exhaust hydrogen gas measuring technique neck of critical thermal power generation unit
Domain.
Background technique
In recent years than more prominent the problem of super (super-) critical unit superheater material oxide skin, due to superheater, reheater
The rapid, high volume of material oxidation skin generates, and when unit load generation big ups and downs, easily causes a large amount of peelings of oxide skin, causes
Plugging overtemperature and booster become the big security risk for influencing unit safety operation.Unit high-temperature oxydation rate lacks always can
With the means of on-line monitoring, data shows to have carried out in terms of high-temperature vapor is to the Oxidation Law of superheater material both at home and abroad and be permitted
More research work, but it is in the theoretical research of laboratory progress, oxide skin generating rate lacks monitoring means and data accumulation,
The growing principle and influence factor of oxide skin lack testing and verification, can not be during unit is run to high-temperature surface high-temperature oxydation
Skin risk zones are predicted and are judged, therefore cannot arrange targetedly to check in unit scheduled overhaul, can not be carried out true
There are a large amount of peeling phenomenons of oxide skin during even starting after maintenance again in positive preventative maintenance work, many units,
It is light then cause overtemperature load down, it is heavy then cause to shut down.
Summary of the invention
It is an object of the invention to overcome the shortcomings of the prior art, and a kind of pumped by condenser vacuum is provided and is vented
The accurate measurement of hydrogen content, so as to the condenser vacuum pump for calculating boiler high temperature heating surface oxide scale growth rate
Exhaust hydrogen gas measuring device.
The object of the present invention is achieved by the following technical solutions, a kind of condenser vacuum pump exhaust hydrogen gas measurement dress
It sets, it includes being equipped with grade one filter in the entrance of device, and at least one is connected to behind the grade one filter using pressure
The dehumidifier of contracting mechanism cold or/and electronic cooling, and tested gas temperature is made to be down to 3.8-4.2 DEG C；Dehumidifier lower part is equipped with band
There is the collector tube of drain valve；An at least aspiration pump is connected to behind the dehumidifier, the outlet of aspiration pump is serially connected at least one
Suspended body flowmeter and a drier；The joining distal ends of described device have the detection for being mainly equipped with hydrogen gas concentration analyzer
Room.
As preferred：The dehumidifier is two compositions in parallel, and constitutes changeable intersect by pipeline and valve
The combination dehumidifier of work, the lower part of each dehumidifier are respectively connected to a collector tube for having drain valve；The drier is adopted
With silica dehydrator pipe, tested gas humidity, the front and back connecting line of the drier are further decreased using silica gel absorption effect
On be respectively connected to one and be conveniently tested the adjusting of gas flow, the float stream for keeping tested gas flow stable using transparent float
Meter.
As preferred：What the dehumidifier front connected is that material uses the filter cylinder of stainless steel cloth, for multistage-combination
Formula filter net sheet may filter that the grade one filter that granule foreign is carried in condenser vacuum pump exhaust；Phase behind the dehumidifier
Being connected to does the diaphragm inside pump back and forth by mechanical device as power, by the circular motion of motor using DC brushless motor
Formula movement, the aspiration pump to be compressed to the pump chamber air of fixed volume；
As preferred：The hydrogen gas concentration analyzer is the thermal conductivity according to gas and determines its ingredient, i.e., by mixed
The thermal conductivity measurement of gas is closed to determine the content of certain gas in mixed gas, the hydrogen thermal conductivity highest in mixed gas, because
, when ingredients other in mixed gas are held essentially constant, the thermal conductivity of mixed gas is substantially dependent upon the number of hydrogen, root for this
It is different according to the thermal conductivity in mixed gas, so that it may to measure the content of institute's hydrogen.
Implementation through the invention can monitor condenser vacuum pump exhaust hydrogen gas content, be pumped and be vented by condenser vacuum
Flow, can calculate hydrogen generation rate, and hydrogen source is reacted in boiler high temperature heating surface water and metal, according to boiler high temperature by
Hot face iron, the anti-principle of water, can further calculate boiler high temperature heating surface oxidation rate.
The present invention has the accurate measurement that exhaust hydrogen gas content is pumped by condenser vacuum, so as to for calculating boiler
The features such as high-temperature surface oxide scale growth rate.
Detailed description of the invention
Fig. 1 is the flow chart of condenser vacuum pump exhaust hydrogen gas measuring device of the present invention.
Fig. 2 is the structural schematic diagram of condenser vacuum pump exhaust hydrogen gas measuring device of the present invention.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings：Fig. 1, shown in 2, a kind of condenser of the present invention is true
Sky pump exhaust hydrogen gas measuring device, it includes being equipped with grade one filter 1 in the entrance of device, behind the grade one filter
At least one is connected to using compressor refrigeration or/and the dehumidifier 2 of electronic cooling, and tested gas temperature is made to be down to 3.8-4.2
℃；2 lower part of dehumidifier is equipped with the collector tube 3 with drain valve D；It is connected to an at least aspiration pump 6 behind the dehumidifier, takes out
The outlet of air pump 6 is serially connected with an at least suspended body flowmeter 7 and a drier 8；The joining distal ends of described device, which have, to be mainly equipped with
The sensing chamber 10 of hydrogen gas concentration analyzer.
As shown in the figure, the dehumidifier 2 is two compositions in parallel, and constitutes changeable intersect by pipeline and valve
The combination dehumidifier 2 of work, the lower part of each dehumidifier 2 are respectively connected to a collector tube 3 for having drain valve D；The drying
Device 8 uses silica dehydrator pipe, further decreases tested gas humidity, the company of 8 front and back of drier using silica gel absorption effect
Adapter tube road is respectively connected to one and is conveniently tested the adjusting of gas flow using transparent float, keeps tested gas flow stable
Suspended body flowmeter 7,9.
What 2 front of dehumidifier of the present invention connected is that material uses the filter cylinder of stainless steel cloth, to be multistage combined
Filter net sheet may filter that the grade one filter 1 that granule foreign is carried in condenser vacuum pump exhaust；Phase behind the dehumidifier 2
Being connected to does the diaphragm inside pump back and forth by mechanical device as power, by the circular motion of motor using DC brushless motor
Formula movement, the aspiration pump 6 to be compressed to the pump chamber air of fixed volume；
Hydrogen gas concentration analyzer of the present invention is the thermal conductivity according to gas and determines its ingredient, that is, passes through gaseous mixture
The thermal conductivity measurement of body determines the content of certain gas in mixed gas, the hydrogen thermal conductivity highest in mixed gas, therefore works as
When other ingredients are held essentially constant in mixed gas, the thermal conductivity of mixed gas be substantially dependent upon hydrogen number, according to mixed
The thermal conductivity closed in gas is different, so that it may measure the content of institute's hydrogen.
Embodiment 1：Fig. 1, shown in 2, a kind of condenser vacuum of the present invention pumps exhaust hydrogen gas measuring device, including：
Grade one filter 1, the first dehumidifier 2, the second dehumidifier 4, the first collector tube 3, the second collector tube 5, aspiration pump 6, flowmeter 7,
9, drier 8, sensing chamber 10 and solenoid valve and connecting pipe.
Grade one filter 1 is installed in present apparatus entrance, material uses the filter cylinder of stainless steel cloth, is multistage combined filtering
Mesh sheet may filter that the granule foreign carried in condenser vacuum pump exhaust.
Dehumidifier is housed after grade one filter 1, dehumidifier uses compressor refrigeration and electronic cooling.It, will by dehumidifying
Sample temperature degree is down to 4 DEG C or so（It can avoid condensation water freezing）, water vapour is condensed into water and exhausts in tested gas.First dehumidifier
2 and second dehumidifier 4 be forked working relationship, i.e. the first dehumidifier 2 work when, the second dehumidifier 4 stop transport, for a period of time with
Afterwards（6 hours）, it is switched to the work of the second dehumidifier 4, the first dehumidifier 2 is stopped transport, and the service life of dehumidifier can be extended.First removes
Wet device 2 and 4 lower part of the second dehumidifier are respectively equipped with collector tube 3,5, can be regular by opening drain valve D7, D8 on collector tube 3,5
Discharge hydrops.By dehumidifying, tested gas dew point can be down to 4 DEG C（25 DEG C of environment temperature）Below.
Aspiration pump 6 is housed after combining dehumidifier, the aspiration pump 6 is also possible to two B1 and B2（Shown in Fig. 2）, one
It is standby with one.Aspiration pump is made the circular motion of motor inside pump by mechanical device as power using DC brushless motor
Diaphragm does reciprocating, to be compressed to the air in the pump chamber of fixed volume, stretch to form vacuum (negative pressure), is pumping
Pressure difference is generated with external atmosphere pressure at bleeding point, under the action of pressure difference, gas pressure (suction) is entered into pump chamber, then from exhaust outlet
Discharge.It operates normally, is tested gas average flow rate 4.5L/min.
Suspended body flowmeter 7 and drier 8 are installed in the outlet of aspiration pump 6.Flowmeter 7 uses transparent suspended body flowmeter, side
Just it is tested the adjusting of gas flow, keeps tested gas flow to stablize, operates normally, flow is adjusted to 4.5L/min.Drier
It using silica dehydrator pipe, is acted on using silica gel absorption, further decreases tested gas humidity, by silica dehydrator, be tested gas
Dew point can be down to 1 DEG C（25 DEG C of environment temperature）.
Present apparatus end is equipped with sensing chamber 10, is hydrogen gas concentration analyzer, the basic principle is that leading according to gas
Heating rate and determine its ingredient, i.e., the content of certain gas in mixed gas is determined by the measurement of the thermal conductivity of mixed gas,
Hydrogen thermal conductivity highest in mixed gas, therefore when ingredients other in mixed gas are held essentially constant, the heat of mixed gas
Conductance be substantially dependent upon hydrogen number, it is different according to the thermal conductivity in mixed gas in this way, so that it may to measure institute's hydrogen
Content.Present apparatus hydrogen measurement range is 0-3000ppm, can also be according to the actual range of tested gas hydrogen concentration, to this dress
The hydrogen measurement range set adjusts accordingly.
All parts of the present invention are：
1, grade one filter.Material uses the filter cylinder of stainless steel cloth, is multistage combined filter net sheet, filtering net plate aperture is from outer
It is gradually reduced to interior by 100 μm to 30 μm, may filter that the granule foreign carried in condenser vacuum pump exhaust.
2, dehumidifier.The cooling and dehumidifying used is compressor refrigeration and electronic cooling（Peltier effect）.Selected by the system
Drier is wall-mounted condenser.By dehumidifying, sample temperature degree is down to 4 DEG C or so（It can avoid condensation water freezing）, it is tested gas
Water vapour is condensed into water and exhausts in body.Dehumidifier 1 and dehumidifier 2 are the relationships of forked working, i.e., dehumidifier when dehumidifier 1 works
2 stop transport, after a period of time（6 hours）, it is switched to the work of dehumidifier 2, C dehumidifier 1 is stopped transport, and can extend dehumidifier uses the longevity
Life.Technical parameter is as follows：
Component amount lost：3%（When≤100ppm concentration）
Dehydration efficiency：> 96%
Working environment：5℃~55℃
Entrance sample temperature degree：180 DEG C of <
Entrance sample gas dew point：80 DEG C of <（25 DEG C of environment temperature）
Export sample gas dew point：4 DEG C of <（25 DEG C of environment temperature）
Refrigeration control temperature：3-5 DEG C, setting value can be selected in the range
Temperature control controls precision：Setting value ± 0.2 DEG C（25 DEG C ± 0.1 DEG C of environment temperature）
Sample gas disposal ability：4NL/min
Mounting means：Wall-mounted backboard installation
3, aspiration pump.The circular motion of motor is made inside pump by mechanical device as power using DC brushless motor
Diaphragm does reciprocating, to be compressed to the air in the pump chamber of fixed volume, stretch to form vacuum (negative pressure), is pumping
Pressure difference is generated with external atmosphere pressure at bleeding point, under the action of pressure difference, gas pressure (suction) is entered into pump chamber, then from exhaust outlet
Discharge.Aspiration pump technical parameter is as follows：
Operating voltage：24V DC
Load current：< 300mA
Flow：Peak flow 6L/min, average flow rate 4.5L/min
Vacuum degree（Absolute pressure：）26kpa（Contrast standard atmospheric pressure 101kpa）/196mmHg（Contrast standard atmospheric pressure 760
mmHg）/261mbar（1013 mbar of standard atmospheric pressure）
Relative degree of vacuum：About -75kpa
4, flowmeter.Using transparent suspended body flowmeter, the adjusting of convenient tested gas flow keeps tested gas flow to stablize.
Flowmeter measurement range matches with pumping pump discharge.
5, drier.It using silica dehydrator pipe, is acted on using silica gel absorption, afterbody dehumidifying further decreases tested
Gas humidity.4 DEG C of < of entrance sample gas dew point（25 DEG C of environment temperature）, export 1 DEG C of sample gas dew point <（25 DEG C of environment temperature）.
6, sensing chamber, is hydrogen gas concentration analyzer, and the basic principle of this instrument is the thermal conductivity according to gas and true
Its fixed ingredient, i.e., determine the content of certain gas in mixed gas, in mixed gas by the measurement of the thermal conductivity of mixed gas
Middle hydrogen thermal conductivity highest, therefore when ingredients other in mixed gas are held essentially constant, the thermal conductivity of mixed gas is basic
Depending on hydrogen number, it is different according to the thermal conductivity in mixed gas in this way, so that it may to measure the content of institute's hydrogen.
Hydrogen gas concentration analyzer technical parameter is as follows：
Range：0-3000ppm（It is adjustable according to tested gas hydrogen content range）.
Quiescent operation parameter：3 mA@, 10.5~45 VDC operating voltage：24VDC (10.5~45 VDC) mould
Quasi- signal output：The output of 4~22.8 mA linear currents；3.6 mA fault currents export the T90 response time：Less than 15 seconds
Recovery time：Less than 30 seconds resolution ratio：1 μ A precision：±3%F.S.；± 1%F.S. (customization) display pattern：Band backlight
LCD LCD display content：5 Digital sums show numerical value, 8 rice font type information prompts, 50 sections of percentage bar prompts
Setting unit：Ppm, %VOL, mA, % operating ambient temperature：- 40~70 DEG C of (concrete foundation sensor parameters) working environments
Humidity：10-95% R.H. (no condensation) explosive-proof grade：Ex d IIC T6 (flame proof application)；Ex ia IIC T4 (
Intrinsic safety application) case material：Other attachmentes of aluminum explosion-resistant enclosure：Stainless steel package size： 160mm (L) 140mm
(W) 85mm (H) degree of protection： IP66
By the operation of the measuring device, hydrogen content in condenser vacuum pump exhaust can be accurately measured, and then high temperature can be calculated
Oxide scale growth rate.The pollution to transmitter such as moisture, solid impurity in tested gas can avoid using the device.
Claims (4)
1. a kind of condenser vacuum pumps exhaust hydrogen gas measuring device, it includes being equipped with grade one filter in the entrance of device,
At least one dehumidifier for using compressor refrigeration or/and electronic cooling is connected to behind grade one filter described in being characterized in that,
And tested gas temperature is made to be down to 3.8-4.2 DEG C；Dehumidifier lower part is equipped with the collector tube with drain valve；The dehumidifier
It is connected to an at least aspiration pump below, the outlet of aspiration pump is serially connected with an at least suspended body flowmeter and a drier；Described device
Joining distal ends have the sensing chamber of hydrogen gas concentration analyzer be mainly installed.
2. condenser vacuum according to claim 1 pumps exhaust hydrogen gas measuring device, it is characterised in that the dehumidifier
It is formed in parallel two, and is made up of the combination dehumidifier of changeable forked working pipeline and valve, each dehumidifier
Lower part is respectively connected to a collector tube for having drain valve；The drier uses silica dehydrator pipe, is acted on using silica gel absorption
Tested gas humidity is further decreased, one is respectively connected on the front and back connecting line of the drier and uses transparent float convenient
The adjusting of tested gas flow, the suspended body flowmeter for keeping tested gas flow stable.
3. condenser vacuum according to claim 1 or 2 pumps exhaust hydrogen gas measuring device, it is characterised in that the dehumidifying
What device front connected is that material uses the filter cylinder of stainless steel cloth, may filter that condenser vacuum pump for multistage combined filter net sheet
The grade one filter of granule foreign is carried in exhaust；It is connected to behind the dehumidifier using DC brushless motor as dynamic
The circular motion of motor is made the diaphragm inside pump do reciprocating, to the pump to fixed volume by power by mechanical device
The aspiration pump that chamber air is compressed.
4. condenser vacuum according to claim 1 pumps exhaust hydrogen gas measuring device, it is characterised in that the hydrogen gas
Bulk concentration analyzer is the thermal conductivity according to gas and determines its ingredient, i.e., determines to mix by the thermal conductivity measurement of mixed gas
The content of certain gas in gas, the hydrogen thermal conductivity highest in mixed gas are closed, therefore it is basic to work as other ingredients in mixed gas
When keeping constant, the thermal conductivity of mixed gas be substantially dependent upon hydrogen number, it is different according to the thermal conductivity in mixed gas, just
The content of institute's hydrogen can be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635471.8A CN108843552A (en) | 2018-06-20 | 2018-06-20 | A kind of condenser vacuum pump exhaust hydrogen gas measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635471.8A CN108843552A (en) | 2018-06-20 | 2018-06-20 | A kind of condenser vacuum pump exhaust hydrogen gas measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108843552A true CN108843552A (en) | 2018-11-20 |
Family
ID=64203408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810635471.8A Pending CN108843552A (en) | 2018-06-20 | 2018-06-20 | A kind of condenser vacuum pump exhaust hydrogen gas measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557037A (en) * | 2018-12-27 | 2019-04-02 | 南京理工大学 | Applied to the system and method for continuously monitoring mercury concentration in oxygen-enriching device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806679A (en) * | 2010-04-16 | 2010-08-18 | 宁夏电力公司电力科学研究院 | Flue gas sampling device |
| CN203365369U (en) * | 2013-06-08 | 2013-12-25 | 中国原子能科学研究院 | System used for monitoring hydrogen gases produced in fast reactor washing process |
| CN203771372U (en) * | 2013-11-08 | 2014-08-13 | 浙江浙能能源技术有限公司 | Device for detecting generation rate of oxide skin on heating surface of high-temperature steam side of thermodynamic system |
| CN205192811U (en) * | 2015-12-18 | 2016-04-27 | 广东省特种设备检测研究院惠州检测院 | Boiler efficiency test flue gas sampler |
| CN205749082U (en) * | 2016-05-09 | 2016-11-30 | 江阴兴澄特种钢铁有限公司 | A kind of sample gas processing system of gas analyzer for O2 |
-
2018
- 2018-06-20 CN CN201810635471.8A patent/CN108843552A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806679A (en) * | 2010-04-16 | 2010-08-18 | 宁夏电力公司电力科学研究院 | Flue gas sampling device |
| CN203365369U (en) * | 2013-06-08 | 2013-12-25 | 中国原子能科学研究院 | System used for monitoring hydrogen gases produced in fast reactor washing process |
| CN203771372U (en) * | 2013-11-08 | 2014-08-13 | 浙江浙能能源技术有限公司 | Device for detecting generation rate of oxide skin on heating surface of high-temperature steam side of thermodynamic system |
| CN205192811U (en) * | 2015-12-18 | 2016-04-27 | 广东省特种设备检测研究院惠州检测院 | Boiler efficiency test flue gas sampler |
| CN205749082U (en) * | 2016-05-09 | 2016-11-30 | 江阴兴澄特种钢铁有限公司 | A kind of sample gas processing system of gas analyzer for O2 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557037A (en) * | 2018-12-27 | 2019-04-02 | 南京理工大学 | Applied to the system and method for continuously monitoring mercury concentration in oxygen-enriching device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105021262B (en) | The adjustable gas flow scaling method of temperature, pressure | |
| CN2784902Y (en) | Meter for on-line monitoring air leakage of steam turbine vacuum system | |
| CN108507918B (en) | Device and method for on-line monitoring concentration of ultralow-emission flue gas particles | |
| CN102353403B (en) | Methods for measuring chilled water flow and cooling medium flow of central air-conditioning host machine | |
| CN108843552A (en) | A kind of condenser vacuum pump exhaust hydrogen gas measuring device | |
| CN109060464A (en) | Sampler and measuring device for the measurement of gravimetric method smoke moisture | |
| CN102012148B (en) | Vacuum drying control method | |
| CN103412097B (en) | The pick-up unit of a kind of VOC and burst size of methanal and detection method thereof | |
| CN202149889U (en) | Intelligent resistance-capacitance type dew point instrument with high precision | |
| CN102628639A (en) | Vacuum drying device and vacuum drying control method | |
| CN110146403B (en) | High-temperature high-pressure steam humidity measuring device | |
| CN110926643A (en) | Condensate supercooling degree on-line monitoring device and method for condensing steam turbine unit | |
| CN111220524A (en) | Air permeability testing device and method for porous filtering material | |
| CN110824109A (en) | Evaluation test method and test stand for dust holding performance of high-efficiency air filter material | |
| Tai et al. | The potential for heat pumps in drying and dehumidification systems II: an experimental assessment of the heat pump characteristics of a heat pump dehumidification system using R114 | |
| CN101033918A (en) | Method for monitoring change of relative air content in condensing thermal power unit condenser | |
| CN209182103U (en) | A kind of non-heated mode can control flow removes the atmosphere air sample tube of condensed water | |
| CN111551586B (en) | Compressed air pressure dew point detection device and method | |
| CN211478122U (en) | Condensate supercooling degree on-line monitoring device for condensing steam turbine unit | |
| CN209148380U (en) | Sampler and measuring device for the measurement of gravimetric method smoke moisture | |
| RU111709U1 (en) | HEATING LEAK DETECTION SYSTEM IN NPP ROOMS | |
| CN207271022U (en) | A kind of industrial fermentation exhaust gas dehydrating unit | |
| CN202928928U (en) | PM2.5 monitor with aerosol humidity controller | |
| RU2186374C2 (en) | Method of measurement and control of wet gas dew-point temperature | |
| RU2814646C1 (en) | All-purpose device for creating, measuring, monitoring and accounting for the degree of influence of humidity on air suspension components with the ability to detect the formation of condensation on the actuators |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181120 |