CN207263505U - Online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device - Google Patents
Online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device Download PDFInfo
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- CN207263505U CN207263505U CN201721333464.XU CN201721333464U CN207263505U CN 207263505 U CN207263505 U CN 207263505U CN 201721333464 U CN201721333464 U CN 201721333464U CN 207263505 U CN207263505 U CN 207263505U
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Abstract
The utility model provides a kind of online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device, including explosion-proof sampling probe (20), explosion-proof sampling pipeline (21), explosion-proof sampling pump (22), high-pressure washing device (23), steam-water separator (24), explosion-proof vortex effect refrigeration dehumidifier (25), filter (26), drying chamber (27) and oxygen analyzer (28).Advantage is：The utility model realizes the pretreatment such as high-pressure sampling, high-pressure washing by transforming the special designs of sampling probe, pretreatment critical component.Not only met to the removal of the efficient process of high concentrate dust, highly corrosive gas, inflammable gas and more sticky contaminants, but also realized the accurate continuous monitoring of the oxygen concentration of nitrogen protecting bin, system entirety high efficient and reliable, automatic running, maintenance is small.
Description
Technical field
It the utility model is related to a kind of detection device, and in particular to a kind of online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen
Content analysis detection device.
Background technology
With industrial expansion, the hazardous waste discharged in its production process is increasing, and there are pollution to ask for hazardous waste
Topic, potential social influence and the pretreatment stage easy combustion explosion the problems such as, it is now basic using " broken-mixing-pump
Send " system solution hazardous waste processing.In view of the inflammable and explosive feature of hazardous waste, hazardous waste processing broken, mixing,
Pumping whole process is required for carrying out in explosion-proof nitrogen protecting bin.Under nitrogen protection, effectively avoid firing problem.At dangerous waste
Reason nitrogen protecting bin oxygen content will be strict controlled within 3%, 5% alarm.Therefore, at a set of dependable performance and explosion-proof dangerous waste
The reason online oxygen analysis system of nitrogen protecting bin ensure that the security of system for the real time monitoring of the oxygen content of nitrogen protecting bin.
Existing nitrogen protecting bin oxygen determination analysis system uses the straight cutting installing type analyzer in situ of zirconium oxide principle more, and
It is use the Zirconium oxide analyzer with explosion proof ratings more, such as the explosion-proof oxygen determination in coke-stove gas is applied, more using explosion-proof oxidation
The direct insertion online detection scheme of installation of zirconium.Gas component is relatively clearer and more definite and humidity is smaller, common nitrogen existing for non-corrosiveness gas
The direct insertion mounting means of zirconia probe can be used in gas shielded storehouse oxygen analysis, and sample gas is directly without pretreatment system.But such as
Gas attack is strong in fruit nitrogen protecting bin, high humidity environment and high dust and stickum, surveys the direct insertion detection scheme of zirconium oxide
Danger is caused after then not applying to or install.Specifically, as shown in Figure 1, traditional nitrogen protecting bin measurement of oxygen content device is adopted
With zirconium oxide direct insertion measurement device, mainly by direct insertion explosion-proof type Zirconium oxide analyzer 1 (probe), reference gas air supply unit 2, school
Healthy tendency air supply unit 3, flow set unit 5 and it is placed on the transmitter 4 of place of safety and forms.Wherein：5.1 represent flowmeter；5.2
Represent needle valve；6 represent gas control valve；7 represent zero point gas cylinder；7.1 representative pressure adjusters.
In traditional nitrogen protecting bin zirconium oxide direct insertion measurement device, the oxygen determination principle of zirconia probe as shown in Fig. 2,
Wherein, 8 zirconia sensor is represented；9 represent reference air；10 represent electrode；11 represent voltmeter.Zirconia material is a kind of
Zirconia solid electrolyte, is that yittrium oxide or calcium oxide, the stabilizing zirconia sintered at high temperature are mixed in pure zirconia.
More than 600 DEG C under hot conditions, it is the good conductor of oxonium ion, generally makes tubulose.Respectively flowed through in tubular zirconium-oxide both sides
Tested gas and reference gas, the then potential and the operating temperature of tubular zirconium-oxide and the oxygen concentration of both sides produced have fixed pass
System.If it is known that the concentration of reference gas, then can be according to the oxygen voltage of tubular zirconium-oxide both sides and the operating temperature meter of tubular zirconium-oxide
Calculate the oxygen concentration of tested gas.
Therefore, when the oxygen content in nitrogen protecting bin zirconium oxide direct insertion measurement device detection dangerous waste processing nitrogen protecting bin
When, zirconium head is directly contacted with high temperature corrosion gas, and the dust of high concentration can be assembled rapidly in zirconium head surface, and highly concentrated in storehouse
The flammable explosive gas of degree has the risk fired at a high temperature of zirconium head.
As it can be seen that using traditional nitrogen protecting bin zirconium oxide oxygen analysis apparatus, since the zirconium oxide detection work of use is former
The particularity of reason, forms sufficiently complex dangerous waste in face of sample gas and crushes gas in nitrogen protecting bin, both make to use explosion-proof type straight cutting
Formula zirconium oxide analytical equipment, can not only cause Zirconia detector zirconium head the corrosion of unrepairable, but also zirconium oxide work
High temperature demands (more than 600 DEG C), there is also the possibility fired at any time for the inflammable and explosive gas of high concentration in storehouse.
Specifically there is following deficiency：
1st, ordinary nitrogen protecting bin sample gas constituent comparision contents are clear and definite, no high humidity, and dangerous waste processing nitrogen protecting bin
Sample gas composition situation is more complicated, more flammable explosive gas, and the big viscosity of dust content is big, and sample gas forms complicated and changeable and high corrosion
Property poisonous gas is in the majority；
2nd, all zirconium oxide oxygen determination detection probes are made of zirconia material, it is a kind of zirconia solid electrolyte
Matter, is that yittrium oxide or calcium oxide, the stabilizing zirconia sintered at high temperature are mixed in pure zirconia.It is high more than 600 DEG C
Under the conditions of temperature, it is the good conductor of oxonium ion, generally makes tubulose, if coating platinum electrode inside and outside tubular zirconium-oxide,
Tubular zirconium-oxide is heated with electric furnace, makes the different gas of internal and external walls contact partial pressure of oxygen, tubular zirconium-oxide just becomes an oxygen concentration difference
Battery, if tubular zirconium-oxide is heated to the equilibrium temperature more than 600 DEG C, respectively flowed through in tubular zirconium-oxide both sides tested gas and
Reference gas, the then potential and the operating temperature of tubular zirconium-oxide and the oxygen concentration of both sides produced have fixed relation.If it is known that
The concentration of reference gas, then can calculate tested gas according to the oxygen voltage of tubular zirconium-oxide both sides and the operating temperature of tubular zirconium-oxide
Oxygen concentration.So zirconia probe, which will work normally, must is fulfilled for heating high temperature more than 600 DEG C, and it is usually 750 DEG C, oxidation
A zirconium battery wherein platinum electrode is directly contacted with sample, and another electrode need to be passed through reference gas.And the inflammable and explosive gas of storehouse middle and high concentration
Body has the risk fired at a high temperature of zirconium head.
3rd, dangerous waste processing nitrogen protecting bin has water spray while dangerous waste crushes, forms pulpous state due to the needs of technique
Mixture, so that high-pressure pump directly squeezes into incinerator.Nitrogen protecting bin steam high concentration is so resulted in, is produced when water mist is with crushing
Raw corrosive gas forms high corrosion acid body, and zirconia probe is caused to corrode.Due to pop one's head in hot operation, dangerous waste crush when
The flammable explosive gas of generation is directly contacted with probe, when nitrogen protecting bin oxygen content is more than alarming line, be easy to cause combustion
It is quick-fried, cause danger.A large amount of sticky dusts are bonded in zirconium head caused by dangerous waste crushing, are allowed to lose detection function.
So the oxygen content that direct insertion zirconium oxide analytical equipment should not be applied to dangerous waste processing nitrogen protecting bin is examined online
In survey, if designing a kind of special explosion-proof online oxygen content detector of dangerous waste processing nitrogen protection oxygen content detection, it is
Thing in the urgent need to address at present.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of online explosion-proof type dangerous waste processing nitrogen protecting bin
Oxygen analysis detection device, can effectively solve the above problems.
The technical solution adopted in the utility model is as follows：
The utility model provides a kind of online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device, including
Explosion-proof sampling probe (20), explosion-proof sampling pipeline (21), explosion-proof sampling pump (22), high-pressure washing device (23), steam-water separator
(24), explosion-proof vortex effect refrigeration dehumidifier (25), filter (26), drying chamber (27) and oxygen analyzer (28)；
The explosion-proof sampling probe (20) is installed on nitrogen protection silo wall, the exhaust of the explosion-proof sampling probe (20)
Mouth is by the explosion-proof inlet end for sampling pipeline (21), being connected to the explosion-proof sampling pump (22)；The explosion-proof sampling pump
(22) exhaust end is communicated to the sample introduction gas port of the high-pressure washing device (23)；The stock layout gas port of the high-pressure washing device (23) connects
Lead to the sample introduction gas port of the steam-water separator (24)；The stock layout gas port of the steam-water separator (24) is connected to the explosion-proof whirlpool
Flow the sample introduction gas port of refrigerated dehumidification device (25)；The stock layout gas port of the explosion-proof vortex effect refrigeration dehumidifier (25) passes through the mistake successively
After filter (26) and the drying chamber (27), the sample introduction gas port of the oxygen analyzer (28) is connected to.
Preferably, the explosion-proof sampling probe (20) is the explosion-proof sampling probe with metallic filter.
Preferably, the explosion-proof sampling probe (20) is configured with probe backflush unit.
Preferably, the explosion-proof sampling pipeline (21) is the explosion-proof sampling pipeline with heating function.
Preferably, the explosion-proof sampling pump (22), the high-pressure washing device (23), the steam-water separator (24), described
Explosion-proof vortex effect refrigeration dehumidifier (25), the filter (26), the drying chamber (27) and the oxygen analyzer (28) are respectively mounted
In in positive pressure purging anti-explosion cabinet.
Preferably, the oxygen analyzer (28) is laser oxygen analyzer or magnetic oxygen analyser.
Online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device provided by the utility model have with
Lower advantage：
The utility model by sampling probe, pre-process critical component special designs transform, realize high-pressure sampling,
High-pressure washing etc. pre-processes.Both met to the efficient of high concentrate dust, highly corrosive gas, inflammable gas and more sticky contaminants
Processing removes, and realizes the accurate continuous monitoring of the oxygen concentration of nitrogen protecting bin, system entirety high efficient and reliable, automatic fortune
OK, maintenance is small.
Brief description of the drawings
Fig. 1 is the structure diagram that traditional nitrogen protecting bin oxygen analyses zirconium oxide detection device；
Fig. 2 is that traditional nitrogen protecting bin oxygen analyses zirconium oxide oxygen determination basic principle figure in zirconium oxide detection device；
Fig. 3 is that online explosion-proof type dangerous waste provided by the utility model handles nitrogen protecting bin oxygen analysis detection device
The first structure diagram；
Fig. 4 is that online explosion-proof type dangerous waste provided by the utility model handles nitrogen protecting bin oxygen analysis detection device
Second of structure diagram.
Embodiment
In order to which the technical problem, technical solution and the beneficial effect that are solved the utility model are more clearly understood, below
With reference to accompanying drawings and embodiments, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
Basic at this stage to carry out dangerous waste pulverization process using " broken-mixing-pumping " system, dangerous waste pulverization process must be located
In nitrogen protecting bin, nitrogen protecting bin must assure that oxygen content below 3%, otherwise alarming value can not ensure dangerous waste 5%
Disintegrating process security reliability, so the oxygen real time on-line monitoring of dangerous waste processing nitrogen protecting bin, which becomes, ensures safety in production
Necessary means.But in dangerous waste crushing process, the sample gas composition in nitrogen protecting bin is complicated and changeable, and dust content is high, and by
Real-time water spray is needed in technique, sample gas has the characteristics that high humidity, high viscosity and highly corrosive, direct insertion zirconium oxide analysis dress
Putting should not be applied in the oxygen content on-line checking of dangerous waste processing nitrogen protecting bin.The utility model is specifically for dangerous waste processing
Nitrogen protecting bin special operation condition, is designed a kind of explosion-proof type extraction-type oxygen analysis system on-line detecting system, is set using special construction
The sampling probe of meter, anti-explosion heating sampling pipeline, special construction pretreatment system and laser analyzer and control system, so that real
Now to dangerous waste processing nitrogen protecting bin complex working condition, high humidity, high dust, corrosivity, the explosion-proof sampling of inflammable and explosive sample gas, pre- place
Reason and explosion-proof oxygen determination.
Specifically, realizing that dangerous waste handles nitrogen protecting bin oxygen content on-line real-time measuremen if desired, need to remove decimated
More than 0.1um dust, high viscosity substance, melt water corrosive gas etc. in the sample gas come, ensures that the safety of rear end oxygen analyzer can
By longtime running.Need more parts to organically combine in analysis system to form, including it is following some：First is to carry metallic filter
Explosion-proof sampling probe, sampling probe be installed on nitrogen protection silo wall on, filter probe device filters out a large amount of dust and goo
Matter, more than 5um dust, and probe blowing function is configured with, realize the regular blowback to sampling probe；Part II is band heating
The explosion-proof sampling pipe of function, using 316 stainless steel tubes, and with Anti-explosive heating cable heated at constant temperature, prevents the air cooling of high humidity sample from condensing ice,
Cause pipeline blockage；Part III is corrosion-resistant explosion-proof sampling pump high-pressure extraction sample gas, 0.4MPa, maximum flow 7L, and sample
Gas squeezes into pretreatment system；Part IV is high-pressure washing device, remove sample gas in majority of particles dust and stickum, easily
Melting property corrosive gas and flammable gas；Part V is explosion-proof vortex cooler, for sample gas low temperature dehumidification；6th
It is that dehumidifying and dust removal by filtration is further dried to sample gas to divide, and filters out more than 0.1um particulate matters；Part VII be sample gas disposal it is complete after
Gas chamber is analyzed into oxygen analyzer, realizes analysis.In the utility model, except sampling probe and sample lines, other parts and
Explosion-proof solenoid valve, control circuit of gas circuit switching etc. is controlled to be mounted in positive pressure purging anti-explosion cabinet, cabinet outer wall is provided with explosion-proof
Terminal box, power supply and signal output.
With reference to figure 3 and Fig. 4, online explosion-proof type dangerous waste handles nitrogen protecting bin oxygen analysis detection device, including explosion-proof
Sampling probe 20, explosion-proof sampling pipeline 21, explosion-proof sampling pump 22, high-pressure washing device 23, steam-water separator 24, explosion-proof vortex effect refrigeration
Dehumidifier 25, filter 26, drying chamber 27 and oxygen analyzer 28；Wherein, in figure 3, oxygen analyzer is laser oxygen analyzer；
In Fig. 4, oxygen analyzer is magnetic oxygen analyser.For Fig. 4, placing platform in dangerous waste processing nitrogen protecting bin oxygen analysis apparatus does not have
In the case of vibration, explosion-proof magnetic oxygen oxygen analytical plan can be used, while nitrogen does zero gas, as reference gas.In figure, 29
Represent solenoid valve；30 represent steam trap；31 represent triple valve.
Explosion-proof sampling probe 20 is installed on nitrogen protection silo wall, and explosion-proof sampling probe 20 is with metallic filter
Explosion-proof sampling probe, is first order filter (below 5um), and most dust and high viscosity substance can pass through filter mistake
Filter, explosion-proof sampling probe are configured with probe backflush unit, by timing blowback, extend filter probe service life.Explosion-proof sampling
The exhaust outlet of probe 20 is by the explosion-proof inlet end for sampling pipeline 21, being connected to explosion-proof sampling pump 22；Wherein, explosion-proof sampling pipeline
21 be the explosion-proof sampling pipeline with heating function.The exhaust end of explosion-proof sampling pump 22 is communicated to the sample introduction gas of high-pressure washing device 23
Mouthful；The stock layout gas port of high-pressure washing device 23 is communicated to the sample introduction gas port of steam-water separator 24；The stock layout gas port of steam-water separator 24
It is connected to the sample introduction gas port of explosion-proof vortex effect refrigeration dehumidifier 25；The stock layout gas port of explosion-proof vortex effect refrigeration dehumidifier 25 passed through successively
After filter 26 and drying chamber 27, the sample introduction gas port of oxygen analyzer 28 is connected to.
Explosion-proof sampling pump 22, high-pressure washing device 23, steam-water separator 24, explosion-proof vortex effect refrigeration dehumidifier 25, filter 26,
Drying chamber 27 and oxygen analyzer 28 are mounted in positive pressure purging anti-explosion cabinet.
Dangerous waste pulverization process nitrogen protecting bin oxygen analysis apparatus sample gas pretreatment using special construction high-pressure washing device 23,
Steam-water separator 24, explosion-proof vortex effect refrigeration dehumidifier 25, filter 26 and drying chamber 27, realize that dangerous waste processing nitrogen protecting bin is answered
The dedusting dehumidifying of miscellaneous sample gas and etchant gas washing and Adsorption, with ensure into the sample gas of the oxygen analyzer low humidity and
Cleaning, ensures the operation reliably and with long-term of oxygen analyzer.
Wherein, explosion-proof sampling pump is put in positive pressure purging anti-explosion cabinet, its operation principle is：Sample, take out through explosion-proof sampling probe
The sample gas in nitrogen protecting bin is taken, sample gas samples pipeline through the sampling probe with power back-blowing filter and with explosion-proof stainless steel is heated,
Washed by air inlet into high-pressure washing device, form continuous agglomerate bubble, to avoid causing liquid level boiling-like, and cause excessive water
Into steam-water separator, most of sample gas enters steam-water separator top, fraction sample via the outlet of high-pressure washing device sample gas
Gas enters steam-water separator lower part by overflow port, it is contemplated that this part sample gas enters steam-water separation at the same time with water from overflow port
Device bottom, water content is high, in steam-water separator top design Multilayer Network, further realizes steam-water separation.Liquid water in sample gas
Overflow water outlet with high-pressure washing device is discharged since gravity falls into steam trap.Sample gas by washing is in explosion-proof vortex system
The cold cold chamber dehumidifying water outlet of dehumidifier, then moisture content is absorbed by filter dedusting and drying chamber, the oxygen-containing sample gas of clean low humidity is formed,
Analyze and detect into oxygen analyzer gas chamber.
It can be seen from the above that to realize that dangerous waste handles the safe and reliable detection of nitrogen protecting bin oxygen content, it is necessary to use completely newly
Extract plus the system and device of pretreatment bonus point analyzer, system components are intended to meet requirement of explosion proof.Traditional nitrogen cannot be used
The direct insertion on-line checking of protecting bin oxygen detection device, i.e. zirconium oxide.Because dangerous waste crushes the easy of the gas in nitrogen protecting bin
The problems such as firing explosive, high humidity high corrosion, both uses explosion-proof type zirconium oxide analytical equipment, not only zirconium oxide head can be caused to damage
It is bad, since zirconium head uses (more than 600 DEG C) at high temperature, more there is the danger for causing in storehouse and firing.
For the particularity of dangerous waste processing nitrogen protecting bin sample gas, a kind of dangerous waste processing nitrogen of the utility model brand-new design
Gas shielded oxygen content detection special explosion-proof online oxygen content detector, mainly use extraction mode, by complicated sample gas from
Extracted out in storehouse, by dedicated pretreatment, remove the dust in sample gas, stickum and corrosive gas etc., in oxygen analyzer
Gas chamber in realize the Accurate Determining of oxygen content.Specifically, brand-new oxygen detection device structure provided by the utility model, both
Suitable for dangerous waste pulverization process nitrogen protecting bin special operation condition oxygen content detector, by the band explosion-proof sampling probe sample of filter,
The sampling of high-voltage explosion-proof sampling pump, the sample gas pretreatment of special construction, are used in combination with oxygen analyzer, adaptable, safely may be used
The brand-new nitrogen protecting bin oxygen analyzer device leaned on.
It can be seen from the above that the utility model handles the complexity of nitrogen protecting bin oxygen analysis sample gas, high humidity, high corruption according to dangerous waste
The characteristics of high more stickums of corrosion, dust, more flammable explosive gas, analyze the traditional straight cutting for being originally used for nitrogen protecting bin
Formula zirconium oxide oxygen analysis apparatus can not be suitable for this environment, so that a kind of reliable and effective extraction analysis mode oxygen of brand-new design
Gas detection device, asking for dangerous waste processing nitrogen protecting bin oxygen analysis sample can not be suitable for by solving conventional oxidation zirconium analytical equipment
Topic.And by transforming the special designs of sampling probe, pretreatment critical component, realize high-pressure sampling, high-pressure washing etc.
Pretreatment.Both met and high concentrate dust, the efficient process of highly corrosive gas, inflammable gas and more sticky contaminants removed,
The accurate continuous monitoring of the oxygen concentration of nitrogen protecting bin, system entirety high efficient and reliable, automatic running, maintenance are realized again
It is small.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching should also regard the scope of protection of the utility model.
Claims (6)
1. a kind of online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device, it is characterised in that including explosion-proof
It is sampling probe (20), explosion-proof sampling pipeline (21), explosion-proof sampling pump (22), high-pressure washing device (23), steam-water separator (24), anti-
Quick-fried vortex effect refrigeration dehumidifier (25), filter (26), drying chamber (27) and oxygen analyzer (28)；
The explosion-proof sampling probe (20) is installed on nitrogen protection silo wall, the exhaust outlet warp of the explosion-proof sampling probe (20)
The explosion-proof sampling pipeline (21) is crossed, is connected to the inlet end of the explosion-proof sampling pump (22)；The explosion-proof sampling pump (22)
Exhaust end is communicated to the sample introduction gas port of the high-pressure washing device (23)；The stock layout gas port of the high-pressure washing device (23) is communicated to institute
State the sample introduction gas port of steam-water separator (24)；The stock layout gas port of the steam-water separator (24) is connected to the explosion-proof vortex effect refrigeration
The sample introduction gas port of dehumidifier (25)；The stock layout gas port of the explosion-proof vortex effect refrigeration dehumidifier (25) passes through the filter successively
(26) and after the drying chamber (27), it is connected to the sample introduction gas port of the oxygen analyzer (28).
2. online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device according to claim 1, it is special
Sign is that the explosion-proof sampling probe (20) is the explosion-proof sampling probe with metallic filter.
3. online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device according to claim 1, it is special
Sign is that the explosion-proof sampling probe (20) is configured with probe backflush unit.
4. online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device according to claim 1, it is special
Sign is that the explosion-proof sampling pipeline (21) is the explosion-proof sampling pipeline with heating function.
5. online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device according to claim 1, it is special
Sign is, the explosion-proof sampling pump (22), the high-pressure washing device (23), the steam-water separator (24), the explosion-proof vortex
Refrigerated dehumidification device (25), the filter (26), the drying chamber (27) and the oxygen analyzer (28) are mounted on positive pressure and blow
Sweep in anti-explosion cabinet.
6. online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device according to claim 1, it is special
Sign is that the oxygen analyzer (28) is laser oxygen analyzer or magnetic oxygen analyser.
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| CN201721333464.XU CN207263505U (en) | 2017-10-17 | 2017-10-17 | Online explosion-proof type dangerous waste processing nitrogen protecting bin oxygen analysis detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568048A (en) * | 2019-09-12 | 2019-12-13 | 中国原子能科学研究院 | Oxygen content transmitter |
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2017
- 2017-10-17 CN CN201721333464.XU patent/CN207263505U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568048A (en) * | 2019-09-12 | 2019-12-13 | 中国原子能科学研究院 | Oxygen content transmitter |
| CN110568048B (en) * | 2019-09-12 | 2021-04-02 | 中国原子能科学研究院 | Oxygen content transmitter |
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