CN107505235A - A kind of device for testing petroleum storage tank oil-gas diffusion - Google Patents
A kind of device for testing petroleum storage tank oil-gas diffusion Download PDFInfo
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- CN107505235A CN107505235A CN201710876680.7A CN201710876680A CN107505235A CN 107505235 A CN107505235 A CN 107505235A CN 201710876680 A CN201710876680 A CN 201710876680A CN 107505235 A CN107505235 A CN 107505235A
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000009792 diffusion process Methods 0.000 title claims abstract description 20
- 239000003208 petroleum Substances 0.000 title claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000004088 simulation Methods 0.000 claims abstract description 9
- 230000005855 radiation Effects 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 238000013016 damping Methods 0.000 claims description 9
- 230000008602 contraction Effects 0.000 claims description 7
- 229910052724 xenon Inorganic materials 0.000 claims description 6
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 230000003760 hair shine Effects 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 7
- 230000008020 evaporation Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 32
- 239000002912 waste gas Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000035568 catharsis Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Present invention is disclosed a kind of device for testing petroleum storage tank oil-gas diffusion, including:Wind-tunnel, radiant heating component and exhaust adsorption tower, radiant heating component are installed on the top at the top of test section, and at the top of test section between there is one section of radiation space, for simulating natural light irradiation and irradiation level is adjustable;The solar irradiation outlet of simulation sky is provided with the top of test section;Exhaust adsorption tower is arranged on the downstream of power section, and power section includes the adjustable frequency conversion fan of wind speed, is provided with least one layer of adsorption layer in exhaust adsorption tower, setting direction of the adsorption layer in exhaust adsorption tower is vertical with wind speed direction.The present invention is combined radiant heating component with construction of wind tunnel, simulates the real natural environments such as different sunshine irradiations, different wind speed, situations such as so as to study oil gas evaporation during oil movement and storage, spread.
Description
Technical field
The present invention relates to a kind of petroleum storage tank oil-gas diffusion test device, is tested more particularly, to a kind of simulating natural environment
The device of petroleum storage tank oil-gas diffusion.
Background technology
At present, oil is still global main energy sources, is a kind of non-renewable resources, in the storage and transport process of oil gas
Its operating environment is sufficiently complex, and the scope being related to is also very wide.During oil movement and storage, the lighter component of a part is normal in oil
Air is often escaped into, oil gas evaporation occurs.Therefore the relevant unit such as oil depot, gas station should maintain sharp vigilance in transportation,
So as to avoid the generation of the accidents such as oil gas evaporation, blast, fire.
Therefore, influence of the real natural environment to oil movement and storage oil-gas diffusion is simulated, solves how to suppress stone with this
The diffusion situation of oil gas in oily storage and transport process, harm reduction consequence, control leakage spread risk, turn into safing key and ask
One of topic.
Oil-gas diffusion, evaporating loss are slow and persistently carried out, and it is difficult to be sent out that this loss, which shows very hidden,
It is existing, and the size of waste usually covered by measured error.The attention of related personnel is not caused always.But survey data
Show, the accumulated quantity of Loss of Oil Evaporation is very surprising, and therefore, research oil-gas diffusion is one of current important topic.
The content of the invention
A kind of the defects of it is an object of the invention to overcome prior art, there is provided dress for testing petroleum storage tank oil-gas diffusion
Put, with influence of the natural environments such as simulated solar irradiation and natural wind to oil movement and storage oil-gas diffusion.
To achieve the above object, the present invention proposes following technical scheme:A kind of device for testing petroleum storage tank oil-gas diffusion,
Including:Wind-tunnel, radiant heating component and exhaust adsorption tower are air inlet section that the wind-tunnel includes being sequentially distributed along wind speed direction, steady
Determine section, contraction section, test section, changeover portion and power section, the radiant heating component is installed on the top at the top of test section, and with
There is radiation space between at the top of test section, for simulating natural light irradiation and irradiation level is adjustable;Set at the top of the test section
There is the solar irradiation outlet of simulation sky;The exhaust adsorption tower is arranged on the downstream of power section, and the power section includes wind
The adjustable frequency conversion fan of speed, at least one layer of adsorption layer is provided with the exhaust adsorption tower, the adsorption layer is in exhaust adsorption tower
Interior setting direction is vertical with wind speed direction.
Preferably, the radiant heating component includes three groups of fluorescent tube components, and three groups of fluorescent tube components are equal along airflow direction
The even left, center, right position being distributed at the top of test section, form matrix form illumination structure;And every group of fluorescent tube component is by multiple fluorescent tubes
Composition, the fluorescent tube at the top of test section from top to bottom, parallel uniform arrangement.
Preferably, the fluorescent tube is linear xenon lamp fluorescent tube.
Preferably, each fluorescent tube is covered with a reflection shield, and the light that the reflection shield launches fluorescent tube is reflected into flat
Row light.
Preferably, the radiant heating component also includes axial flow blower, the side installation one of fluorescent tube component described in every three groups
Axial flow blower, and the axial flow blower is installed on the central shaft of every group of fluorescent tube component.
Preferably, the fluorescent tube component for the left, center, right position being distributed at the top of the test section is arranged by 12 parallel uniforms
The fluorescent tube composition of cloth.
Preferably, the solar irradiation outlet is individual layer high temp glass.
Preferably, the fluorescent tube component adjusts irradiation level by coupled power regulating cabinet.
Preferably, each adsorption layer of correspondence of the exhaust adsorption tower respectively opened on two sides up and down one be used for change absorption
The inspection hole of layer.
Preferably, the adsorption layer is active carbon layer.
Preferably, the honeycomb and at least three layers of damping screen set gradually along wind speed direction is included in the stable section.
Preferably, the honeycomb is made up of multiple hexagon honeycomb units;The damping screen is by stainless steel wire
Braiding forms.
Preferably, the contraction section shrinks to test section direction, and its inner surface is the curved surface gradually tapered up along wind speed direction.
Preferably, the section of the air inlet section is in horn-like, and it is to be expanded to stable section opposite direction.
Preferably, the rectangular in cross-section of the test section, and its side offers transparent observation window.
Preferably, the frequency conversion fan is flame-proof converter blower fan, and wind speed adjustable range is wide:0~32m/s.Substantially cover
Nature is from one-level to the wind speed range of ten two levels.
Preferably, the side of the test section is further opened with the door carried for petroleum storage tank.
The beneficial effects of the invention are as follows:1st, the present apparatus combines radiant heating component and construction of wind tunnel, can not only simulate
Early, middle and late sunshine irradiation, moreover it is possible to simulate the various natures such as spring, summer, autumn and winter each time sunshine irradiation and various wind conditions
Influence of the environment to oil movement and storage.2nd, present apparatus tail gas is fully adsorbed using activated carbon, is adsorbed poisonous and air pollutants,
Solve the problems, such as waste gas discharge, environmental protection, energy-conserving and environment-protective.3rd, the radiant heating of the present apparatus does light source from linear xenon lamp,
Its brightness is high, in linear, and The book of Changes optical system is processed into source of parallel light, spectral region close to sunshine, can true simulation too
Sunlight situation.4th, present apparatus wind speed range is wide:0~32m/s continuously adjustabes, nature can be simulated from one-level to ten two levels
Wind speed range.5th, additionally select flame-proof converter blower fan, and by the set location of radiant heating component, using axle stream wind
Machine carries out the combining structure of wind-cooling heat dissipating to radiant heating component, solves the problem of oil-gas diffusion explosive.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention;
Fig. 2 is the structural representation of radiant heating component of the present invention;
Fig. 3 is the structural representation of fluorescent tube light reflection of the present invention;
Fig. 4 is the structural representation of frequency conversion fan of the present invention;
Fig. 5 is the structural representation of exhaust adsorption tower of the present invention.
Reference:
1st, wind-tunnel, 2, air inlet section, 3, stable section, 31, honeycomb, 32, damping screen, 4, contraction section, 5, test section, 51, too
Sunlight is broken forth mouth, 52, observation window, 6, changeover portion, 7, power section, 71, frequency conversion fan, 8, exhaust adsorption tower, 81, adsorption layer, 82,
Inspection hole, 9, radiant heating component, 91, fluorescent tube component, 92, fluorescent tube, 93, reflection shield, 10, mounting bracket.
Embodiment
Below in conjunction with the accompanying drawing of the present invention, clear, complete description is carried out to the technical scheme of the embodiment of the present invention.
A kind of device of disclosed test petroleum storage tank oil-gas diffusion, can simulate spring, summer, autumn and winter in each time
The irradiation of early, middle and late sunshine and the influence of the various natural environments to oil movement and storage such as various wind conditions, be mainly used in oil
Accumulating oil gas evaporation, the testing research for spreading situation.
As shown in figure 1, a kind of device of disclosed test petroleum storage tank oil-gas diffusion, including:Wind-tunnel 1, spoke
Penetrate heating component 9 and exhaust adsorption tower 8, air inlet section 2 that wind-tunnel 1 includes being sequentially distributed along wind speed direction, stable section 3, contraction section
4th, test section 5, changeover portion 6 and power section 7, wherein, entrance of the air inlet section 2 for gas and the gas progress to entrance are preliminary whole
Stream, in the present embodiment, the section of air inlet section 2 is in horn-like and it is opposite direction (i.e. remote stable section 3 to stable section 3
Direction) expansion, the horn-like design of air inlet section 2 is for good air flow state and less windage loss, improves examination
Test the flow quality of section 5.
The honeycomb 31 and at least three layers of grade fairing of damping screen 32 close to air inlet section 2 are provided with stable section 3 so that
Gas is more uniform, to improve flow quality.In the present embodiment, the section of stable section 3 is rectangle, and its damping screen 32 is arranged at
The downstream of honeycomb 31, i.e. honeycomb 31 and damping screen 32 are distributed along wind speed direction.Preferably, honeycomb 31 is by multiple positive six sides
Shape honeycomb unit forms;The section of damping screen 32 is latticed, and the sub-box in grid is square, and is woven by stainless steel wire
Form, percent opening 64%.The combination of the honeycomb 31 of hexagonal honeycomb shape and the damping screen 32 of square grid trellis, rectification gas
Better, gas is more preferably uniform after rectification, and quality is more preferably.
Contraction section 4 is gradually reduced to the cross section of the direction of test section 5 (i.e. along wind speed direction), and its inner surface is along wind speed
The curved surface that direction gradually tapers up.Preferably, in the present embodiment, the both ends cross-sectional area of contraction section 4 is respectively 3000 × 4000mm
With 2000 × 2000mm.
Petroleum storage tank (not shown) is placed with test section 5, is combined with radiant heating component 9, it is early, middle and late for simulating
Sunshine irradiates, and the sunshine of spring, summer, autumn and winter each any time in time irradiates influence to oil movement and storage.Radiant heating group
Part 9 is installed on the top at the top of test section 5 by corresponding mounting bracket 10, and leaves certain spoke between the top of test section 2
Space is penetrated, for simulating natural light irradiation.
The irradiation level of radiant heating component 9 is adjustable and light area can cover whole test section 5.Specifically, with reference to Fig. 2 institutes
Show, radiant heating component 9 includes three groups of fluorescent tube components 91, and this three groups of fluorescent tube components 91 are separately mounted to the over top of test section 5
Left, center, right position, left, center, right position correspondence wind speed direction, its middle left and right direction correspond to the east and west in geographical position to,
For simulating from morning to night illumination (from the east to the west).Every group of fluorescent tube component 91 is by multiple (i.e. vertical with wind speed direction from front to back
Direction), parallel uniform arrangement fluorescent tube 92 form.In the present embodiment, the section of test section 5 is a 2000mm × 2000mm
Rectangle, and radiant heating component is 2000mm × 2000mm in the effective area of irradiation of test section 5, that is to say, that its illumination
Region can cover whole test section 5, and irradiation intensity is about 1130W/m2。
Wherein, when only opening the one group of fluorescent tube component 91 in the left side, sunshine irradiation in morning can be simulated;Open left, center, right simultaneously
During three groups of fluorescent tube components 91 of position, the irradiation of noon sunshine can be simulated;When only opening the one group of fluorescent tube component 91 in the right, it can simulate
Sunshine irradiation in afternoon.With reference to shown in Fig. 2 and Fig. 3, in the present embodiment, two groups of left, center, right fluorescent tube component 91 is parallel by 12
The linear xenon lamp fluorescent tube 92 uniformly arranged forms.The present embodiment preferably does light source with linear xenon lamp, and its brightness is high, in linear, easily
Source of parallel light is processed into through optical system, and spectral region, can truly simulated solar irradiation radiation situation close to sunshine.
In addition, as shown in figure 3, each fluorescent tube 92 is covered with a reflection shield 93, the light that reflection shield 93 launches fluorescent tube 92
Directional light is reflected into, increases light source utilization rate.And an axial flow blower (not shown), axle stream are installed in the side of every group of fluorescent tube component 91
Assembling on the central shaft of every group of fluorescent tube component 91, for the wind-cooling heat dissipating of fluorescent tube component 91, axial flow blower and radiation plus
The combining structure of the radiation space stayed between hot component 9 and test section 5, delays irradiation damage of the fluorescent tube component 91 to test section 5,
And reduce and blast equivalent risk is produced because temperature is too high.
The irradiation level of three groups of fluorescent tube components 91 can be adjusted in real time by a power regulating cabinet (not shown), power regulating cabinet and three groups of lamps
Tube assembly 91 is connected.So, the present embodiment forms matrix type structure, the light intensity spirit of light source using the line source of 36 groups of independence
Work is adjustable, to ensure the optical uniformity and stability in effective area of irradiation.By adjust fluorescent tube component 91 irradiation level and
The combination operation of the fluorescent tube component 91 of diverse location is opened, so as to realize the early, middle and late sunshine irradiation of simulation, and spring, summer, autumn and winter
Each time sunshine irradiation, and then test the influence under the natural conditions of these sunshines irradiation to oil movement and storage.
In addition, it is corresponding to simulate real sunshine irradiation with radiant heating component 9, as shown in figure 1, the present invention is trying
The solar irradiation outlet 51 that the top of section 5 is provided with simulation sky is tested, so as to realize that more realistically sunshine is under natural environment
Irradiation to test specimen (such as petroleum storage tank) in test section 5.
Preferably, as shown in figure 1, the side of test section 5 offers transparent observation window 52 and door (not shown), wherein,
The setting of observation window 52 facilitates wind tunnel test (such as the diffusion test of petroleum storage tank under field conditions (factors) here) observation.Door is set
Put the carrying for facilitating petroleum storage tank;And test section wind speed adjustable range is wide:0~32m/s (speed continuously adjustabe), equivalent to energy mould
Intend the wind speed of nature from one-level to the scope of ten two levels.
Changeover portion 6 is to allow transition between test section 5 and power section 7, reduces power section 7 to the air-flow product of test section 5
The influence of matter, improve the flow field indexs such as airflow homogeneity, the precision of test section 5.
Power section 7 is used to provide the wind friction velocity needed for the simulation of oil movement and storage oil-gas diffusion.With reference to shown in Fig. 1 and Fig. 4, move
Big flow, the adjustable frequency conversion fan 71 of wind speed are provided with power section 7, fan of the present invention is special according to demand, fan efficiency
Up to 80%.
Preferably due to oil gas explosion limit range is very wide, so the reflection shield 93 of xenon lamp fluorescent tube 92 of the present invention can be selected
But also do not limit using explosion-proof reflection shield, due to the structure of axial flow blower and its set location on radiant heating component, fluorescent tube 92
The present invention is equally applicable to using not explosion-proof.And the frequency conversion fan of power section 7 preferably uses flame-proof converter blower fan, makes the present apparatus can
Applied to inflammable, explosive particular surroundings.
Exhaust adsorption tower 8 is used to adsorb caused poisonous and air pollutants in oil-gas diffusion simulation process, it is not arranged
Enter in air, environmental protection, the use of apparatus of the present invention is met the requirement of environmental administration.Specifically, with reference to Fig. 1 and Fig. 5 institutes
Show, be layered in exhaust adsorption tower 8 and be provided with least one layer of adsorption layer 81, in the present embodiment, be provided with two layers of active carbon layer 81.It is useless
Gas gas provides power by the frequency conversion fan 71 of power section 7, and malleation enters exhaust adsorption tower 8, successively through two layers of active carbon layer 81
Discharged after absorption.
Preferably, an inspection hole is opened up on the upper and lower two sides of exhaust adsorption tower 8 corresponding to each active carbon layer 81
82, easily it can change activated carbon from the inspection hole 82 of upper and lower both sides.
It is highly preferred that in order to increase the contact area of waste gas and activated carbon, setting of the adsorption layer 81 in exhaust adsorption tower 8
Direction is vertical with wind speed direction V.So waste gas and the porous activated carbon with large surface contacts, the pollutant quilt in waste gas
Absorption, makes it be separated with admixture of gas and play catharsis, purification gas qualified discharge.
Key point of the present invention is essentially consisted in, and radiant heating component 9 is combined with the structure of wind-tunnel 1, simulates different solar irradiations
Penetrate, the real natural environment such as different wind speed, situations such as to study oil gas evaporation during oil movement and storage, diffusion.
The technology contents and technical characteristic of the present invention have revealed that as above, but those skilled in the art still may base
Make a variety of replacements and modification without departing substantially from spirit of the present invention, therefore, the scope of the present invention in teachings of the present invention and announcement
The content disclosed in embodiment should be not limited to, and various replacements and modification without departing substantially from the present invention should be included, and is this patent Shen
Please claim covered.
Claims (10)
- A kind of 1. device for testing petroleum storage tank oil-gas diffusion, it is characterised in that including:Wind-tunnel, radiant heating component and exhaust Adsorption tower, air inlet section that the wind-tunnel includes being sequentially distributed along wind speed direction, stable section, contraction section, test section, changeover portion and dynamic Power section, the radiant heating component is installed on the top at the top of test section, and has radiation space between test section top, uses In simulation natural light irradiation and irradiation level it is adjustable;The solar irradiation outlet of simulation sky is provided with the top of the test section;Institute The downstream that exhaust adsorption tower is arranged on power section is stated, the power section includes the adjustable frequency conversion fan of wind speed, the exhaust adsorption At least one layer of adsorption layer is provided with tower, setting direction of the adsorption layer in exhaust adsorption tower is vertical with wind speed direction.
- 2. device according to claim 1, it is characterised in that the radiant heating component includes three groups of fluorescent tube components, institute The left, center, right position that three groups of fluorescent tube components are evenly distributed on test section over top along airflow direction is stated, matrix light is formed and shines Structure;And every group of fluorescent tube component is made up of multiple fluorescent tubes, the fluorescent tube at the top of test section from front to back, parallel uniform arrangement.
- 3. device according to claim 2, it is characterised in that the fluorescent tube is linear xenon lamp fluorescent tube.
- 4. device according to claim 2, it is characterised in that each fluorescent tube is covered with a reflection shield, described reflective Cover the light for launching fluorescent tube and be reflected into directional light.
- 5. device according to claim 2, it is characterised in that the radiant heating component also includes axial flow blower, and every three An axial flow blower is installed in the side of the group fluorescent tube component, and the axial flow blower is installed on the center of middle that group of fluorescent tube component On axle.
- 6. device according to claim 2, it is characterised in that fluorescent tube component described in three groups of left, center, right is parallel by 12 The fluorescent tube composition uniformly arranged.
- 7. device according to claim 1, it is characterised in that the solar irradiation outlet is individual layer high temp glass.
- 8. device according to claim 1, it is characterised in that above and below each adsorption layer of correspondence of the exhaust adsorption tower An inspection hole for being used to change adsorption layer is respectively opened on two walls, the adsorption layer is active carbon layer.
- 9. device according to claim 1, it is characterised in that include what is set gradually along wind speed direction in the stable section Honeycomb and at least three layers of damping screen.
- 10. device according to claim 1, it is characterised in that the test section wind speed adjustable range is:0~32m/s.
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CN109855898A (en) * | 2019-02-27 | 2019-06-07 | 中国石油大学(华东) | Single well site La Jing storage tank opens wide liquid level contaminated-oil basin VOCs emission transaction device |
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CN109855898A (en) * | 2019-02-27 | 2019-06-07 | 中国石油大学(华东) | Single well site La Jing storage tank opens wide liquid level contaminated-oil basin VOCs emission transaction device |
CN109682726A (en) * | 2019-03-04 | 2019-04-26 | 中国石油大学(华东) | A kind of water curtain inhibition LNG steam diffusion effect analysis experiment porch |
CN109682726B (en) * | 2019-03-04 | 2024-04-05 | 中国石油大学(华东) | Water curtain LNG vapor diffusion inhibition effect analysis experiment platform |
CN117890061A (en) * | 2024-03-18 | 2024-04-16 | 百林机电科技(苏州)有限公司 | Wind tunnel combined with robot and calibrated by full-automatic anemometer |
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