WO2023115177A1 - Procédé et système de détection de changement de contenants de stockage de fluides sous pression - Google Patents

Procédé et système de détection de changement de contenants de stockage de fluides sous pression Download PDF

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Publication number
WO2023115177A1
WO2023115177A1 PCT/BR2022/050417 BR2022050417W WO2023115177A1 WO 2023115177 A1 WO2023115177 A1 WO 2023115177A1 BR 2022050417 W BR2022050417 W BR 2022050417W WO 2023115177 A1 WO2023115177 A1 WO 2023115177A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid storage
storage containers
measurement unit
exchange
pressure
Prior art date
Application number
PCT/BR2022/050417
Other languages
English (en)
Portuguese (pt)
Inventor
Davi Francisco Caetano Dos Santos
Robson BAPTISTA GAMA
Original Assignee
Robert Bosch Limitada
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from BR102021025983-3A external-priority patent/BR102021025983A2/pt
Application filed by Robert Bosch Limitada filed Critical Robert Bosch Limitada
Publication of WO2023115177A1 publication Critical patent/WO2023115177A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water

Definitions

  • the present invention relates to a method and system for detecting the exchange of storage containers for fluids under pressure, mainly for cylinders carrying LPG, but not limited to this type of application.
  • Said method and system detects whether fluid storage containers have been exchanged from the measurement of movement and internal pressure of the container.
  • LPG liquefied petroleum gas
  • LPG gas is commonly stored and marketed in pressure fluid storage containers, such containers called commonly from cylinders, as they are easily transformed into liquids under pressure. Cylinders thus have an internal pressure 6 to 8 times greater than atmospheric pressure.
  • the average composition of LPG gas is 31.76% butenes, 30.47% propylene, 23.33% butanes, 14.34% propane, 0.3% ethane and 0.07% of pentanes, with variations in this composition depending on the source of supply.
  • This gaseous mixture has almost twice the density of air, where butane alone is almost three times as dense, so if there is a leak, the tendency is for the gas to accumulate close to the ground. This makes it especially dangerous if not noticed, as butane expels breathable air from that region and leads to asphyxiation - in addition to explosion if any ignition source is triggered.
  • the most used olfactory marker is ethanethiol, with the purpose of assigning smell and not affecting the properties of the gas, since the human sense of smell is capable of perceiving one part in another 2.8 billion parts of air.
  • LPG gas In addition to being easy to transport due to its high-pressure liquefaction characteristics, LPG gas has a high calorific value, excellent burning quality and, above all, low environmental impact due to its low emission of pollutants. Comparing the CO2 released during the burning of coal or other fossil fuel that generates waste with that of LPG, there is a much lower level of emission, in addition to its higher calorific value - with less gas it is possible to obtain the same amount of heat , helping to preserve the environment since CO2 is one of the gases that cause the greenhouse effect and global warming.
  • LPG gas in the stove depends on the evaporation of the pressurized liquid. In this way, an “empty” volume is needed inside the storage container, which actually has vapors in equilibrium with the liquid, which allows the expansion of the gas (commonly called dead volume).
  • the cylinders are filled up to 85% of their capacity, reserving the 15% for this expansion.
  • the coexistence of LPG in liquid and gaseous form inside the cylinder is possible thanks to the saturated vapor pressure (pvs), which varies depending on the gas composition and temperature, according to the Clausius- Clapeyron (which is used to characterize a discontinuous phase transition between two phases of matter of a single constituent).
  • evaporation rate is greater as the contact surface between the liquid and the walls of the cylinder is greater, so with a full cylinder the evaporation rate is much higher than in a cylinder with a quarter of the initial capacity.
  • the gas cylinder comes in different types and sizes. These models are classified based on their weight in kilograms and adding the letter “P” as a prefix, such as cylinders P5, P8, P13, P20, P45, P90 and so on - each one with different application characteristics according to the examples below. follow.
  • the P5, P8 and P13 type cylinders are intended for domestic use, both residential and for camping or activities that require mobility.
  • the weight of each one is 5kg, 8kg and 13kg, respectively having a diameter of 272mm, 300mm and 360mm, and a height of 341mm, 464mm and 476mm.
  • the vaporization rate at 20°C is 0.4kg per hour for P5, 0.5kg per hour for P8 and 0.6kg per hour for P13. They have a safety device called a fusible plug where, when exposed to temperatures between 70°C and 77°C, the device melts releasing the internal gas to relieve pressure and prevent explosion.
  • the P20 cylinder is most commonly used in forklifts and for ballooning, having a weight of 20 kg. Its diameter is 310mm with a height of 878mm, and its safety system is a manually operated valve that, through user actuation, releases the gas to prevent explosions.
  • the P45 cylinder which weighs 45kg, is more suitable for industrial use, bars, restaurants and snack bars, and can also be used for ballooning activities. It is still possible to be adopted in residential environments when there is a higher consumption, such as heaters and showers. gas, so the use of the traditional P13 is considered inefficient. It has a diameter of 376.5mm and a height of 1299mm, with steaming at 20°C of 1 kg per hour.
  • the P90 type cylinder is also suitable for industrial use, in addition to restaurants, pharmacies, ballooning and hospitals. Its diameter is 556mm and height is 1203.5mm, with vaporization at 20°C of 1 kg per hour.
  • Such containers need to offer mechanical resistance to impacts during transport, in addition to withstanding an internal pressure of approximately 17 kgf/cm 2 .
  • the material used in its manufacture is steel, which undergoes various manipulations and welding for its assembly, in addition to the so-called thermal treatment where the piece is heated to relieve the tension of the steel and provide the best possible arrangement of its molecules, gaining hardness and resistance. .
  • After heating and completely cooling the containers they receive the safety valve, which serves to expel the gas in case of heating of the environment where the container is installed, and finally an anti-corrosive painting.
  • the present invention aims to reveal a method and system that detects whether there has been an exchange from the measurement of movement of a device associated with the container, correlating it to the internal pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention concerne un procédé et un système de détection de changement de contenants de stockage de fluides sous pression, notamment pour cylindres porteurs de GPL, mais non limités à ce type d'application. Ledit procédé et ledit système permettent de détecter si un changement de contenants de stockage de fluides a eu lieu à partir de la vérification de déplacement et de pression interne du contenant, garantissant l'efficacité énergétique et la détection d'un changement erroné.
PCT/BR2022/050417 2021-12-21 2022-11-01 Procédé et système de détection de changement de contenants de stockage de fluides sous pression WO2023115177A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR1020210259833 2021-12-21
BR102021025983-3A BR102021025983A2 (pt) 2021-12-21 Método e sistema de detecção de troca de recipientes armazenadores de fluidos sob pressão

Publications (1)

Publication Number Publication Date
WO2023115177A1 true WO2023115177A1 (fr) 2023-06-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2022/050417 WO2023115177A1 (fr) 2021-12-21 2022-11-01 Procédé et système de détection de changement de contenants de stockage de fluides sous pression

Country Status (1)

Country Link
WO (1) WO2023115177A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040084145A (ko) * 2003-03-26 2004-10-06 주식회사 델로스테크놀로지 위치엔코딩 자기액면측정기를 활용한 압축용기의잔량측정장치
GB2486018A (en) * 2010-12-02 2012-06-06 Bedford Hospital Nhs Trust Apparatus for monitoring depletion and movement of a medical gas supply
ES2478740A1 (es) * 2012-12-20 2014-07-22 Enrique PUERTA BLANCO Sonda para determinar el nivel de la fase líquida de gases licuados del petróleo y otros gases licuados, acondicionados en botellas presurizadas
CN105157788A (zh) * 2015-05-07 2015-12-16 四川科强电子技术有限责任公司 检测液压式cng加气子站“溢油”的高速高压液位计
CN210739968U (zh) * 2019-09-17 2020-06-12 中国特种设备检测研究院 一种便携式lng气瓶测试仪
CN214189297U (zh) * 2020-11-26 2021-09-14 长春致远新能源装备股份有限公司 汽车用lng气瓶用新材料防过充装置结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040084145A (ko) * 2003-03-26 2004-10-06 주식회사 델로스테크놀로지 위치엔코딩 자기액면측정기를 활용한 압축용기의잔량측정장치
GB2486018A (en) * 2010-12-02 2012-06-06 Bedford Hospital Nhs Trust Apparatus for monitoring depletion and movement of a medical gas supply
ES2478740A1 (es) * 2012-12-20 2014-07-22 Enrique PUERTA BLANCO Sonda para determinar el nivel de la fase líquida de gases licuados del petróleo y otros gases licuados, acondicionados en botellas presurizadas
CN105157788A (zh) * 2015-05-07 2015-12-16 四川科强电子技术有限责任公司 检测液压式cng加气子站“溢油”的高速高压液位计
CN210739968U (zh) * 2019-09-17 2020-06-12 中国特种设备检测研究院 一种便携式lng气瓶测试仪
CN214189297U (zh) * 2020-11-26 2021-09-14 长春致远新能源装备股份有限公司 汽车用lng气瓶用新材料防过充装置结构

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