CN105866354A - Intelligent sulfur hexafluoride biological toxicity testing device - Google Patents
Intelligent sulfur hexafluoride biological toxicity testing device Download PDFInfo
- Publication number
- CN105866354A CN105866354A CN201610447095.0A CN201610447095A CN105866354A CN 105866354 A CN105866354 A CN 105866354A CN 201610447095 A CN201610447095 A CN 201610447095A CN 105866354 A CN105866354 A CN 105866354A
- Authority
- CN
- China
- Prior art keywords
- gas
- sulfur hexafluoride
- exposure box
- toxicant exposure
- pump
- 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.)
- Granted
Links
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 30
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 26
- 231100000041 toxicology testing Toxicity 0.000 title abstract 3
- 239000007789 gas Substances 0.000 claims abstract description 65
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 18
- 239000001301 oxygen Substances 0.000 claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 231100000167 toxic agent Toxicity 0.000 claims description 32
- 239000003440 toxic substance Substances 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 231100000820 toxicity test Toxicity 0.000 claims description 7
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 229920005479 Lucite® Polymers 0.000 claims description 3
- 239000002574 poison Substances 0.000 claims description 3
- 231100000614 poison Toxicity 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims 1
- 231100000572 poisoning Toxicity 0.000 abstract 5
- 230000000607 poisoning effect Effects 0.000 abstract 5
- 230000003139 buffering effect Effects 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000001788 irregular Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, e.g. H2S
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Sampling And Sample Adjustment (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention provides an intelligent sulfur hexafluoride biological toxicity testing device. The intelligent sulfur hexafluoride biological toxicity testing device is characterized in that a poisoning box is made of organic glass with good light transmission; a high-definition camera is arranged on the outer wall of the poisoning box; the poisoning box is internally provided with a displacement sensor and is additionally provided with an air pump, a buffer tank, a recycling tank, a controller, an alarm and a plurality of airflow control modules; each airflow control module comprises a flow control valve and a constant difference pressure-reducing valve, which are connected in parallel; the signal output ends of the high-definition camera and the displacement sensor are connected with the controller; an air inlet end of each gas mixing module is correspondingly connected with an oxygen bottle and a sulfur hexafluoride gas bottle through a pipeline provided with an electronic flow meter and the airflow control module respectively; an air outlet end of each gas mixing module is communicated with the poisoning box through a pipeline with a tee joint and an air inlet pipe in sequence; an air outlet of the poisoning box is connected with the buffering tank and the air outlet end of the buffering tank is connected with the recycling tank through a pump; and the output end of the air pump is connected with the tee joint and the output end of the air pump is connected with the alarm, the air pump, the pump and the electronic flow meter; and meanwhile, alarming and movement frequencies and an image signal are wirelessly and remotely transmitted.
Description
Technical field
The present invention relates to a kind of intelligent sulfur hexafluoride biological toxicity test device, belong to sulfur hexafluoride toxicity test technical field.
Background technology
The most conventional SF61 test of gaseous bio toxicity has been only capable of the inspection of 1 bottle of gas, and the test period is longer, and one
As need Continuous Observation 72h, need staff's continuous duty observe small white mouse situation, experiment work amount is bigger.Along with electricity
The development that net is built, the jumbo electrical equipment such as extra-high voltage, super-pressure gets more and more, to SF6The demand of gas is increasing,
Experiment work amount is very big, needs badly existing SF6Gaseous bio toxicity test improves and perfect, is formed a kind of quick, high
Effect, the most reliably test method, thoroughly solve SF6The problem that gaseous bio toxicity exists.
Summary of the invention
It is an object of the invention to provide one to overcome drawbacks described above, automaticity height, can guarantee that sulfur hexafluoride bio-toxicity is tried
Test intelligentized control method, there is the intelligent sulfur hexafluoride biological toxicity test device of multiple monitoring function, excellent working performance.Its
Technical scheme is:
A kind of intelligent sulfur hexafluoride biological toxicity test device, including oxygen cylinder, sulfur hexafluoride gas cylinder, multiple electronic flowmeter,
Mixed gas module that multiple structures are identical and multiple toxicant exposure box, each mixed gas module correspond to a toxicant exposure box, it is characterised in that: dye
Poison case uses light transmission, and good lucite is made, and the outer wall of each toxicant exposure box is all provided with a high-resolution camera, sets in toxicant exposure box
Having waterer and feeding device, the bottom in toxicant exposure box is provided with stainless (steel) wire, is provided with displacement transducer bottom stainless (steel) wire；Set up
Air pump, surge tank, recycling can, controller, alarm and be arranged on oxygen cylinder and each sulfur hexafluoride gas cylinder outlet pipe
On multiple gas flow optimized modules, the signal output part of each high-resolution camera and each displacement transducer all connects controller；
Each gas flow optimized module all includes and the flow control valve that connects and uniform-pressure-drop valve, the pressure differential of gas flow optimized module
P=4k (x0+x)/πd2, in formula, k is the spring rate of uniform-pressure-drop valve, x0With the spring precompressed that x is respectively uniform-pressure-drop valve
The spool amount of movement of contracting amount and uniform-pressure-drop valve, d is the spool external diameter of uniform-pressure-drop valve, and the selection of rigidity k makes just
x0=x；Each mixed gas module all includes mixing chamber and the gas mixing pipe road of concatenation, and gas mixing pipe road uses spiral winding pipe, wears in pipe
Inserting an irregular Teflon tap of strip, the inlet end of mixing chamber is the most successively through being provided with electronic flowmeter and stability of flow module
Pipeline correspondence connects oxygen cylinder and sulfur hexafluoride gas cylinder, and sulfur hexafluoride and oxygen are with the ratio of 79:21 and with flow sum per minute
Each mixing chamber is entered into no less than the flow velocity of toxicant exposure box volume 1/8, then by the outlet side in gas mixing pipe road successively through being provided with threeway
Toxicant exposure box connected by pipeline with air inlet pipe, and the outlet side of air inlet pipe extends to the bottom of toxicant exposure box, and oxygen concentration in toxicant exposure box is
21%；The gas outlet of toxicant exposure box connects surge tank through the pipeline being provided with check valve, and the outlet side of surge tank takes back closed cans through pump；Air
Delivery side of pump connects the threeway on each pipeline respectively, the output of controller device taking alarm and air pump, pump and electronics respectively
The control end of flowmeter, carries out remote transmission by alarm signal, picture signal and motion frequency signal through wireless launcher simultaneously.
The present invention, compared with existing issue, has an advantage in that:
1, on the outlet pipe of each oxygen cylinder and sulfur hexafluoride gas cylinder, a gas flow optimized module it is all provided with, by choosing rational bullet
The firm k of spring causes x0=x, the pressure differential of gas flow optimized module just can keep steady state value, it is ensured that to the stationarity of mixed gas module supply,
And then the storage of sulfur hexafluoride and oxygen is constant in guarantee toxicant exposure box.
2, controller can analyze the gas flow in gas circuit in real time, can carry out audible alarm when the flow in gas circuit is less than preset value,
Alarm signal is transferred to controller, opens air pump simultaneously, makes pure air enter toxicant exposure box, it is ensured that the life of small white mouse is normal；
High-resolution camera is transferred to controller the small white mouse moving picture signal collected at any time, and displacement transducer is at any time recording
Small white mouse motion frequency signal be transferred to controller, above-mentioned signal carries out remote transmission through wireless launcher, it is achieved to small white mouse
Various dimensions monitor.
3, each mixed equal independent design of gas module, gives corresponding toxicant exposure box supply mixed gas, and each gas circuit can be implemented separately
Break-make, it is to avoid break down because of a wherein road in process of the test, affect the inspection of other road sulfur hexafluoride.
4, two kinds of gases are before entering mixed gas module, controller control sulfur hexafluoride and the flow of oxygen by electronic flowmeter,
Ensureing the precise proportions supply of two kinds of gases, process of the test occurs extremely can carrying out break-make control constantly.
5, each mixed gas module all includes mixing chamber and the gas mixing pipe road of concatenation, and gas mixing pipe road uses spiral winding pipe, interts in pipe
The one irregular Teflon tap of strip, it is ensured that being sufficiently mixed of two kinds of gases.
6, easy and simple to handle, can many bottles of sulfur hexafluoride gas be tested simultaneously, process of the test carries out intelligentized control method, work
It is on duty that personnel need not carry out night, greatly reduces labour intensity, improves operating efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
In figure: 1, oxygen cylinder 2, sulfur hexafluoride gas cylinder 3, toxicant exposure box 4, air pump 5, surge tank 6, return
Closed cans 7, controller 8, alarm 9, mixing chamber 10, gas mixing pipe road 11, electronic flowmeter 12, three
Logical 13, air inlet pipe 14, gas outlet 15, check valve 16, pump 17, waterer 18, feeding device 19,
Stainless (steel) wire 20, high-resolution camera 21, displacement transducer 22, flow control valve 23, uniform-pressure-drop valve 24,
Wireless launcher
Detailed description of the invention
Below in conjunction with the accompanying drawings, by embodiment, the present invention is further described: embodiment has 3 toxicant exposure boxes, 4
Individual gas flow optimized module, 3 mixed gas modules and 3 high-resolution cameras 20, each mixed gas module correspond to a toxicant exposure box 3,
Toxicant exposure box 3 uses light transmission, and good lucite is made, volume 2L.A high-resolution shooting it is all provided with on the sidewall of each toxicant exposure box 3
20, it is provided with waterer 17 and feeding device 18 in toxicant exposure box 3, the bottom in toxicant exposure box 3 is provided with stainless (steel) wire 19, stainless
The bottom of steel mesh 19 is provided with displacement transducer 21, and the signal output part of high-resolution camera 20 and displacement transducer 21 all connects control
Device 7 processed, is transferred to controller 7 the small white mouse moving picture signal collected and motion frequency signal at any time.Each air-flow
Control module all includes and the flow control valve 22 that connects and uniform-pressure-drop valve 23, the pressure differential of gas flow optimized module
P=4k (x0+x)/πd2, in formula, k is the spring rate of uniform-pressure-drop valve 23, x0With the bullet that x is respectively uniform-pressure-drop valve 23
The spool amount of movement of spring pre compressed magnitude and uniform-pressure-drop valve, d is the spool external diameter of uniform-pressure-drop valve 23, the selection of rigidity k
Just x is made0=x, the pressure differential of gas flow optimized module just can keep steady state value；Each mixed gas module all includes the mixed gas of concatenation
Room 9 and gas mixing pipe road 10, gas mixing pipe road 10 uses spiral winding pipe, and in pipe, an interspersed irregular Teflon tap of strip, mixed
The inlet end of air chamber 9 is the most secondary through being provided with electronic flowmeter 11 connect oxygen cylinder 1 and lithium corresponding with the pipeline of stability of flow module
Sulphur gas cylinder 2, sulfur hexafluoride flow-control is at 200ml/min, and oxygen flux control is at 55ml/min, and two kinds of gas is with the ratio of 79:21
Example enters into each mixing chamber 9, and dye is connected with air inlet pipe 13 through being provided with the pipeline of threeway 12 successively in the outlet side in gas mixing pipe road 10
Poison case 3, oxygen concentration in toxicant exposure box 3 is 21%.The outlet side of air inlet pipe 13 extends to the bottom of toxicant exposure box 3, contamination
The gas outlet 14 of case 3 connects surge tank 5 through the pipeline being provided with check valve 15, and the outlet side of surge tank 5 takes back closed cans 6 through pump 15；
The output of air pump 4 connects the threeway 12 on each pipeline respectively, the output of controller 7 device 8 taking alarm and air respectively
The control end of pump 4, pump and electronic flowmeter 11, simultaneously by alarm signal, motion frequency signal and picture signal through wireless
Emitter 24 carries out remote transmission, it is achieved monitor the various dimensions of small white mouse.
Claims (1)
1. an intelligent sulfur hexafluoride biological toxicity test device, including oxygen cylinder (1), sulfur hexafluoride gas cylinder (2), multiple
Mixed gas module that electronic flowmeter (11), multiple structure are identical and multiple toxicant exposure box (3), each mixed gas module correspond to a dye
Poison case (3), it is characterised in that: toxicant exposure box (3) uses light transmission, and good lucite is made, outside each toxicant exposure box (3)
It is all provided with a high-resolution camera (20) on wall, in toxicant exposure box (3), is provided with waterer (17) and feeding device (18), toxicant exposure box
(3) bottom in is provided with stainless (steel) wire (19), and stainless (steel) wire (19) bottom is provided with displacement transducer (21)；Set up air pump
(4), surge tank (5), recycling can (6), controller (7), alarm (8) and be arranged on oxygen cylinder (1) and each
Multiple gas flow optimized modules on sulfur hexafluoride gas cylinder (2) outlet pipe, each high-resolution camera (20) and each displacement
The signal output part of sensor (21) all connects controller (7)；The flow control valve (22) that each gas flow optimized module all includes and connects
With uniform-pressure-drop valve (23), the pressure differential p=4k (x of gas flow optimized module0+x)/πd2, in formula, k is uniform-pressure-drop valve (23)
Spring rate, x0Spring pre compressed magnitude and the spool amount of movement of uniform-pressure-drop valve, the d of uniform-pressure-drop valve (23) it is respectively with x
Being the spool external diameter of uniform-pressure-drop valve (23), the selection of rigidity k makes x just0=x；Each mixed gas module all includes concatenation
Mixing chamber (9) and gas mixing pipe road (10), gas mixing pipe road (10) use spiral winding pipe, pipe in intert a strip do not advise
Teflon tap then, the inlet end of mixing chamber (9) is the most successively through being provided with electronic flowmeter (11) and the pipeline of stability of flow module
Correspondence connects oxygen cylinder (1) and sulfur hexafluoride gas cylinder (2), and sulfur hexafluoride and oxygen are with the ratio of 79:21 and with flow per minute
Sum enters into each mixing chamber (9), then giving vent to anger by gas mixing pipe road (10) no less than the flow velocity of toxicant exposure box (3) volume 1/8
End connects toxicant exposure box (3) with air inlet pipe (13) through being provided with the pipeline of threeway (12) successively, and the outlet side of air inlet pipe (13) is prolonged
Extending the bottom of toxicant exposure box (3), oxygen concentration in toxicant exposure box (3) is 21%；The gas outlet (14) of toxicant exposure box (3)
Connecing surge tank (5) through being provided with the pipeline of check valve (15), the outlet side of surge tank (5) takes back closed cans (6) through pump (15)；
The output of air pump (4) connects the threeway (12) on each pipeline respectively, the output of controller (7) device taking alarm (8) respectively
And air pump (4), pump (15) and the control end of electronic flowmeter (11), simultaneously by alarm signal, motion frequency signal
Remote transmission is carried out through wireless launcher (22) with picture signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447095.0A CN105866354B (en) | 2016-06-20 | 2016-06-20 | Intelligent sulfur hexafluoride biological toxicity test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447095.0A CN105866354B (en) | 2016-06-20 | 2016-06-20 | Intelligent sulfur hexafluoride biological toxicity test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105866354A true CN105866354A (en) | 2016-08-17 |
| CN105866354B CN105866354B (en) | 2017-12-08 |
Family
ID=56650990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610447095.0A Active CN105866354B (en) | 2016-06-20 | 2016-06-20 | Intelligent sulfur hexafluoride biological toxicity test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105866354B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583535U (en) * | 2009-12-22 | 2010-09-15 | 青海电力科学试验研究院 | Three-way connecting pipe SF6 gas testing device with pressure stabilizing valves |
| CN103558346A (en) * | 2013-11-15 | 2014-02-05 | 国家电网公司 | Device for checking sulfur hexafluoride leakage alarm apparatus |
| CN203519592U (en) * | 2013-11-05 | 2014-04-02 | 国家电网公司 | Contamination cylinder for sulfur hexafluoride biological test |
| CN203790816U (en) * | 2014-03-25 | 2014-08-27 | 国家电网公司 | Test tail gas absorbing device for acidic and toxic standard gas in decomposition products of sulfur hexafluoride |
| CN203838140U (en) * | 2014-04-29 | 2014-09-17 | 国家电网公司 | Toxicity test device for sulfur hexafluoride gas |
| CN204099896U (en) * | 2014-08-18 | 2015-01-14 | 国家电网公司 | Mix insulation gas low temperature making-up air device |
| CN205861642U (en) * | 2016-06-20 | 2017-01-04 | 国家电网公司 | Intelligent sulfur hexafluoride biological toxicity test device |
-
2016
- 2016-06-20 CN CN201610447095.0A patent/CN105866354B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583535U (en) * | 2009-12-22 | 2010-09-15 | 青海电力科学试验研究院 | Three-way connecting pipe SF6 gas testing device with pressure stabilizing valves |
| CN203519592U (en) * | 2013-11-05 | 2014-04-02 | 国家电网公司 | Contamination cylinder for sulfur hexafluoride biological test |
| CN103558346A (en) * | 2013-11-15 | 2014-02-05 | 国家电网公司 | Device for checking sulfur hexafluoride leakage alarm apparatus |
| CN203790816U (en) * | 2014-03-25 | 2014-08-27 | 国家电网公司 | Test tail gas absorbing device for acidic and toxic standard gas in decomposition products of sulfur hexafluoride |
| CN203838140U (en) * | 2014-04-29 | 2014-09-17 | 国家电网公司 | Toxicity test device for sulfur hexafluoride gas |
| CN204099896U (en) * | 2014-08-18 | 2015-01-14 | 国家电网公司 | Mix insulation gas low temperature making-up air device |
| CN205861642U (en) * | 2016-06-20 | 2017-01-04 | 国家电网公司 | Intelligent sulfur hexafluoride biological toxicity test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105866354B (en) | 2017-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205786554U (en) | There is the SF of video monitoring function6biological toxicity test device | |
| CN108287127A (en) | Air filter testing and analysis system | |
| CN109085307A (en) | A kind of refuse landfill gas multi-parameter collection and detection device | |
| CN105866354A (en) | Intelligent sulfur hexafluoride biological toxicity testing device | |
| CN205861642U (en) | Intelligent sulfur hexafluoride biological toxicity test device | |
| CN105842408B (en) | SF with video monitoring function6Biological toxicity test device | |
| CN205373778U (en) | Compound detecting analyzer of online quality of water of solar energy | |
| CN205861643U (en) | Sulfur hexafluoride biological toxicity test device | |
| CN209127310U (en) | A kind of Chinese medicine maintenance stowage arrangement for capableing of intellectual monitoring alarm | |
| CN201945448U (en) | Vacuum environment test system of directly operated type electromagnetic valve | |
| DE202019000666U1 (en) | Prevention system for preventing mold formation in restricted air circulation conditions in indoor spaces created by furnishings | |
| CN201949878U (en) | Invariable hypoxemia environment regulation and control system that laboratory was used | |
| CN221199113U (en) | Product acquisition device of fluorescein sodium aerosol generator for nuclear power | |
| CN204165799U (en) | A kind of non-online atmospheric particulate cascade harvester | |
| CN106297527A (en) | A kind of vertical tube flow pattern of gas-liquid two-phase flow demonstrating experiment device | |
| CN106382460A (en) | Multifunctional portable nitrogen charging device | |
| CN207528719U (en) | Waste water detection device | |
| CN207704229U (en) | A kind of non-woven fabrics woven bag production detection device based on Internet of Things | |
| CN213375885U (en) | Dehumidification is air intake system altogether | |
| CN221507575U (en) | On-spot calibrating installation of high altitude gas alarm | |
| CN220207504U (en) | Dust explosion limit testing device | |
| CN217879067U (en) | Gas-assisted detection device | |
| CN211927447U (en) | Multipoint collecting and monitoring device for insect gas in granary | |
| CN212904781U (en) | Contamination bin for testing pollutant absorption efficiency of green plants | |
| CN220399390U (en) | Real-time on-line monitoring device for air cleanliness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |