CN205138953U - Experimental device for high power foam is LNG vapour diffusion effect with higher speed - Google Patents
Experimental device for high power foam is LNG vapour diffusion effect with higher speed Download PDFInfo
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- CN205138953U CN205138953U CN201520958276.0U CN201520958276U CN205138953U CN 205138953 U CN205138953 U CN 205138953U CN 201520958276 U CN201520958276 U CN 201520958276U CN 205138953 U CN205138953 U CN 205138953U
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Abstract
Experimental device for high power foam is LNG vapour diffusion effect with higher speed, the utility model relates to a liquefied natural gas technical field, the upper portion of stainless steel round bucket is equipped with translucent double layer of plastic cover, be equipped with the scale on the lateral wall of translucent double layer of plastic cover, one side of stainless steel round bucket is equipped with the foam liquid reserve tank, the upper portion of foam liquid reserve tank is equipped with high power foam generator through the support, and be equipped with the pipette on the foam liquid reserve tank, the pipette is connected with pipeline negative pressure foam proportioner, the lower extreme of pipeline negative pressure foam proportioner is connected with fire hose, the upper end of pipeline negative pressure foam proportioner is connected with foam generator, and be equipped with solution mixing ratio control valve on the pipeline negative pressure foam proportioner. Carry out the small -size analogue test that the high power foam under the different experiment conditions accelerateed LNG vapour diffusion effect effectively, accelerate the further research of LNG vapour diffusion experiment for the high power foam and establish the basis to provide the reference for actual LNG place foam system design.
Description
Technical field
The utility model relates to LNG Technology field, is specifically related to the experimental provision that high power foam accelerates LNG vapor diffusion effect.
Background technology
As a kind of form of rock gas, liquefied natural gas (LNG) (LNG) solves the problem that gaseous natural gas is unfavorable for mass storage, for a large amount of import and export transports of rock gas provide guarantee.Rock gas (principal ingredient is methane) is cooled to-162.2 DEG C liquefy and formed by LNG, therefore once leak, will seethe with excitement rapidly, evaporate and form inflammable gas cloud, due to lower temperature, the density of the projecting air of gas cloud density, under the effect of Heavy gas effect, under edge, wind direction is assembled at adjacent ground surface, is spread.Once there is incendiary source around, fire or explosion accident will be caused, cause huge economic loss.The method often adopted for the emergency management and rescue of LNG leakage accident at present has two kinds, is that water curtain covers dilution and high power foam covers respectively.When water curtain covers dilution, the heat that a large amount of moisture provides makes low temperature LNG liquid evaporate, and produces a large amount of steam, and dilution diffusion effect is also not obvious.High power foam covers and is just that it can form froth bed and intercept extraneous radiation and convection current above liquid pool compared to the advantage of water curtain dilution, and water cut is few simultaneously, to LNG steam heated successful, only has minor heat to be used to evaporation LNG liquid.
Because LNG actual leakage scene is larger, and there is the danger such as fire, blast, frostbite, therefore accelerating LNG vapor diffusion to study high power foam, be necessary to set up the experimental provision that a set of high power foam accelerates LNG vapor diffusion effect.
Utility model content
The purpose of this utility model is defect for prior art and deficiency, the high power foam providing a kind of structure simple, reasonable in design, easy to use accelerates the experimental provision of LNG vapor diffusion effect, the high power foam effectively carried out under different experimental conditions accelerates the small size simulation test of LNG vapor diffusion effect, the further research accelerating LNG vapor-diffusion experiments for high power foam lays the foundation, and provides reference to the foaming system design of actual LNG place.
For achieving the above object, the technical solution adopted in the utility model is: it comprises small size cylindrical container and fixed high power foam generating means, described small size cylindrical container comprises stainless steel drum, translucent double-layer plastic cover and rule, described fixed high power foam generating means comprises frother, foam liquid reserve tank, pipette, pipeline negative pressure foam proportioner, solution MCV Mixture Control Valve door and water system, and wherein said water system comprises fire truck and fire hose, the top of stainless steel drum is provided with translucent double-layer plastic cover, the sidewall of translucent double-layer plastic cover is provided with rule, the side of stainless steel drum is provided with foam liquid reserve tank, the top of foam liquid reserve tank is provided with high power foam generator by support, and foam liquid reserve tank is provided with pipette, pipette is connected with pipeline negative pressure foam proportioner, the lower end of pipeline negative pressure foam proportioner is connected with fire hose, the upper end of pipeline negative pressure foam proportioner is connected with frother, and pipeline negative pressure foam proportioner is provided with solution MCV Mixture Control Valve, the bottom of described fire hose is connected with water pump.
The downward-sloping 45° angle of discharging opening of described high power foam generator is arranged, small size cylindrical container is placed in below discharging opening, frother running time, foam along plastic jacket wall toward dirty, be covered to liquid pool, avoid the impact that foam vertical impact liquid pool brings.
Described solution MCV Mixture Control Valve door is used for regulating solution mixing ratio, is divided into standard-sized sheet and half-open two kinds.
The range hydraulic pressure of described water system is 0.3 ~ 1.0MPa.
The base diameter of described small size cylindrical container is 35 ~ 45cm.
Principle of work of the present utility model: first inject 10L liquid nitrogen in small size cylindrical container, to simulate the characteristic that LNG leaks pond, is placed in above stainless steel drum by translucent double-layer plastic cover, observes foam layer height change with reference to rule simultaneously, regulate solution MCV Mixture Control Valve door, select standard-sized sheet or half-open, the good fire hose of attaching, choose the water-aspirator pressure of 0.3 ~ 1.0MPa scope, start water pump, when High-Pressure Water flows through pipeline negative pressure foam proportioner, form negative pressure, by pipette, the solution suction in foam liquid reserve tank is mixed with water, foam mixing liquid drives water wheels, and then drive fan blade to rotate, mixed liquor sprays to foam screen through shower nozzle with mist, thin film is formed at the inside surface of foam screen, fan blade fast rotational drives air motion, foam mixing liquid film is blown into a large amount of bubbles, be turned into high power foam, be covered to above LNG liquid pool, when high power foam is covered to specified altitude assignment above liquid pool, switch off the pump, experiment needs add again, when foam height drops to a half of elemental height value, carry out in a manner described being added into elemental height, wherein, in whole experimentation, one has four adjustable variablees, import hydraulic pressure, foam solution mixing ratio, foam adds height, addition manner, we just can carry out the simulation test under different experimental conditions for different situations like this.
After adopting said structure, the utility model beneficial effect is: high power foam described in the utility model accelerates the experimental provision of LNG vapor diffusion effect, the high power foam effectively carried out under different experimental conditions accelerates the small size simulation test of LNG vapor diffusion effect, the further research accelerating LNG vapor-diffusion experiments for high power foam lays the foundation, and provide reference to the design of actual LNG place foaming system, and have structure simple, arrange rationally, the advantage such as cost of manufacture is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
Stainless steel drum 1, translucent double-layer plastic cover 2 and rule 3, frother 4, foam liquid reserve tank 5, pipette 6, pipeline negative pressure foam proportioner 7, solution MCV Mixture Control Valve door 8, fire hose 9, water pump 10.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Shown in Fig. 1, the technical scheme that this embodiment adopts is: it comprises small size cylindrical container and fixed high power foam generating means, described small size cylindrical container comprises stainless steel drum 1, translucent double-layer plastic cover 2 and rule 3, described fixed high power foam generating means comprises frother 4, foam liquid reserve tank 5, pipette 6, pipeline negative pressure foam proportioner 7, solution MCV Mixture Control Valve door 8 and water system, and wherein said water system comprises fire truck and fire hose 9, the top of stainless steel drum 1 is provided with translucent double-layer plastic cover 2, the sidewall of translucent double-layer plastic cover 2 is provided with rule 3, the side of stainless steel drum 1 is provided with foam liquid reserve tank 5, the top of foam liquid reserve tank 5 is provided with high power foam generator 4 by support, and foam liquid reserve tank 5 is provided with pipette 6, pipette 6 is connected with pipeline negative pressure foam proportioner 7, the lower end of pipeline negative pressure foam proportioner 7 is connected with fire hose 9, the upper end of pipeline negative pressure foam proportioner 7 is connected with frother 4, and pipeline negative pressure foam proportioner 7 is provided with solution MCV Mixture Control Valve 8, the bottom of described fire hose 9 is connected with water pump 10.
The downward-sloping 45° angle of discharging opening of described high power foam generator 4 is arranged, small size cylindrical container is placed in below discharging opening, frother running time, foam along plastic jacket wall toward dirty, be covered to liquid pool, avoid the impact that foam vertical impact liquid pool brings.
Described solution MCV Mixture Control Valve door 8 is used for regulating solution mixing ratio, is divided into standard-sized sheet and half-open two kinds.
The range hydraulic pressure of described water system is 0.3 ~ 1.0MPa.
The base diameter of described small size cylindrical container is 35 ~ 45cm.
The principle of work of this embodiment: first inject 10L liquid nitrogen in small size cylindrical container, to simulate the characteristic that LNG leaks pond, is placed in above stainless steel drum 1 by translucent double-layer plastic cover 2, observes foam layer height change with reference to rule 3 simultaneously, regulate solution MCV Mixture Control Valve door 8, select standard-sized sheet or half-open, the good fire hose 9 of attaching, choose the water-aspirator pressure of 0.3 ~ 1.0MPa scope, start water pump 10, when High-Pressure Water flows through pipeline negative pressure foam proportioner 7, form negative pressure, by pipette 6, the solution suction in foam liquid reserve tank 5 is mixed with water, foam mixing liquid drives water wheels, and then drive fan blade to rotate, mixed liquor sprays to foam screen through shower nozzle with mist, thin film is formed at the inside surface of foam screen, fan blade fast rotational drives air motion, foam mixing liquid film is blown into a large amount of bubbles, be turned into high power foam, be covered to above LNG liquid pool, when high power foam is covered to specified altitude assignment above liquid pool, switch off the pump, experiment needs add again, when foam height drops to a half of elemental height value, carry out in a manner described being added into elemental height, wherein, in whole experimentation, one has four adjustable variablees, import hydraulic pressure, foam solution mixing ratio, foam adds height, addition manner, we just can carry out the simulation test under different experimental conditions for different situations like this.
After adopting said structure, this embodiment beneficial effect for: high power foam described in this embodiment accelerates the experimental provision of LNG vapor diffusion effect, the high power foam effectively carried out under different experimental conditions accelerates the small size simulation test of LNG vapor diffusion effect, the further research accelerating LNG vapor-diffusion experiments for high power foam lays the foundation, and provide reference to the design of actual LNG place foaming system, and have structure simple, arrange rationally, the advantage such as cost of manufacture is low.
The above, only in order to the technical solution of the utility model to be described and unrestricted, other amendment that those of ordinary skill in the art make the technical solution of the utility model or equivalently to replace, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. high power foam accelerates the experimental provision of LNG vapor diffusion effect, it is characterized in that: it comprises small size cylindrical container and fixed high power foam generating means, described small size cylindrical container comprises stainless steel drum, translucent double-layer plastic cover and rule, described fixed high power foam generating means comprises frother, foam liquid reserve tank, pipette, pipeline negative pressure foam proportioner, solution MCV Mixture Control Valve door and water system, and wherein said water system comprises fire truck and fire hose, the top of stainless steel drum is provided with translucent double-layer plastic cover, the sidewall of translucent double-layer plastic cover is provided with rule, the side of stainless steel drum is provided with foam liquid reserve tank, the top of foam liquid reserve tank is provided with high power foam generator by support, and foam liquid reserve tank is provided with pipette, pipette is connected with pipeline negative pressure foam proportioner, the lower end of pipeline negative pressure foam proportioner is connected with fire hose, the upper end of pipeline negative pressure foam proportioner is connected with frother, and pipeline negative pressure foam proportioner is provided with solution MCV Mixture Control Valve, the bottom of described fire hose is connected with water pump.
2. high power foam according to claim 1 accelerates the experimental provision of LNG vapor diffusion effect, it is characterized in that: the downward-sloping 45° angle of discharging opening of described high power foam generator is arranged.
3. high power foam according to claim 1 accelerates the experimental provision of LNG vapor diffusion effect, it is characterized in that: the base diameter of described small size cylindrical container is 35 ~ 45cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958276.0U CN205138953U (en) | 2015-11-27 | 2015-11-27 | Experimental device for high power foam is LNG vapour diffusion effect with higher speed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958276.0U CN205138953U (en) | 2015-11-27 | 2015-11-27 | Experimental device for high power foam is LNG vapour diffusion effect with higher speed |
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| CN205138953U true CN205138953U (en) | 2016-04-06 |
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| CN201520958276.0U Expired - Fee Related CN205138953U (en) | 2015-11-27 | 2015-11-27 | Experimental device for high power foam is LNG vapour diffusion effect with higher speed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890832A (en) * | 2017-11-22 | 2018-04-10 | 中石化石油工程技术服务有限公司 | Use accumulation of energy liquid bubble drilling fluid generating means and method in a kind of scene |
| CN107991298A (en) * | 2017-11-10 | 2018-05-04 | 中国石油大学(华东) | A kind of high power foam test research device and method |
-
2015
- 2015-11-27 CN CN201520958276.0U patent/CN205138953U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991298A (en) * | 2017-11-10 | 2018-05-04 | 中国石油大学(华东) | A kind of high power foam test research device and method |
| CN107991298B (en) * | 2017-11-10 | 2020-04-24 | 中国石油大学(华东) | High-power foam experiment research device and method |
| CN107890832A (en) * | 2017-11-22 | 2018-04-10 | 中石化石油工程技术服务有限公司 | Use accumulation of energy liquid bubble drilling fluid generating means and method in a kind of scene |
| CN107890832B (en) * | 2017-11-22 | 2023-08-25 | 中石化石油工程技术服务有限公司 | Device and method for generating on-site energy storage liquid bubble drilling fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20181127 |