NL2030668B1 - Device for collecting oil and gas evaporative emissions - Google Patents

Device for collecting oil and gas evaporative emissions Download PDF

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Publication number
NL2030668B1
NL2030668B1 NL2030668A NL2030668A NL2030668B1 NL 2030668 B1 NL2030668 B1 NL 2030668B1 NL 2030668 A NL2030668 A NL 2030668A NL 2030668 A NL2030668 A NL 2030668A NL 2030668 B1 NL2030668 B1 NL 2030668B1
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NL
Netherlands
Prior art keywords
gas
oil
collecting
cover
pipeline
Prior art date
Application number
NL2030668A
Other languages
Dutch (nl)
Inventor
Mei Hui
Zhang Bowen
Wang Lulu
Zhang Rongshuo
Fu Ya'nan
Zhu Rencheng
Wei Yangbing
Original Assignee
Univ Zhengzhou
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
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Application filed by Univ Zhengzhou filed Critical Univ Zhengzhou
Priority to NL2030668A priority Critical patent/NL2030668B1/en
Application granted granted Critical
Publication of NL2030668B1 publication Critical patent/NL2030668B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
    • B67D7/0476—Vapour recovery systems
    • B67D7/0478—Vapour recovery systems constructional features or components
    • B67D7/0492—Vapour storing means, e.g. dedicated ullage spaces, separate tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
    • B67D7/0476—Vapour recovery systems
    • B67D7/0478—Vapour recovery systems constructional features or components

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The present invention relates to a device for collecting oil and gas evaporative emissions. A device for collecting oil and gas evaporative emissions comprising: a gas collection cover having a gas collection cavity for collecting evaporated oil and gas, where in a barrel inlet and a barrel outlet are provided on the gas collection cover, the barrel inlet and the barrel outlet are both in communication with the gas collection cavity, the barrel inlet is provided for inserting a barrel of a fuel gun, and the barrel outlet is provided for barrel of the fuel gun, a gas delivery pipe for delivering oil and gas into the gas collecting cavity.

Description

DEVICE FOR COLLECTING OILAND GAS EVAPORATIVE EMISSIONS
TECHNICAL FIELD
[01] The present invention relates to a device for collecting oil and gas evaporative emissions.
BACKGROUND ART
[02] With the development of engine technologies and aftertreatment technologies, automobile exhaust emissions have been effectively controlled, but oil and gas emissions are increasingly prominent. Evaporative emissions from vehicles are volatile organic compounds (VOCs) discharged into the atmosphere and occur during the transportation and usage of fuel, such as running losses, hot soaks, the emissions during refuelling and vehicle diurnal parking. Refueling emissions from vehicles are VOC vapor and entrained droplets displaced from the fuel tank ullage, which not only cause serious energy waste, air environmental pollution, but also cause fire and explosion and other potential safety hazards. How to measure oil and gas evaporation quantity during the refueling process is a fundamental basis for formulating scientific and effective automobile fuel evaporative emission limit standards and air pollution control measures.
SUMMARY
[03] In order to achieve the above object, the present invention provides a device for collecting oil and gas evaporative emissions comprising:
[04] a gas collection cover having a gas collection cavity for collecting evaporated oil and gas, wherein a barrel inlet and a barrel outlet are provided on the gas collection cover, the barrel inlet and the barrel outlet are both in communication with the gas collection cavity, the barrel inlet is provided for insertion of a barrel of a fuel gun, and the barrel outlet is provided for stretching of the barrel of the fuel gun;
[05] a gas delivery pipe for delivering oil and gas into the gas collecting cavity, wherein one end of the gas delivery pipe is sealingly connected to the barrel outlet, and the other end of the gas delivery pipe is sealingly connected to the oil inlet of the oil tank;
[06] a gas storage container in communication with the gas collection cavity via a first pipeline for storing the mixed gas;
[07] a gas cylinder in communication with the gas collection cavity via a second pipeline for charging gas into the gas collection cavity to squeeze oil and gas in the gas collection cavity into the gas storage container.
[08] The beneficial effects are that evaporated oil and gas is effectively collected through the gas collection cover, and the internal and external pressure of the gas collection cover is maintained through a gas cylinder to avoid the evaporation of oil and gas is too fast or too slow. The oil and gas is stored through the gas storage tank, and the evaporation amount of oil and gas in the process of refueling is obtained by means of subsequent weighing and laboratory detection to quantitatively obtain the evaporation discharge amount of oil and gas in the process of refueling, which provides a basis for the formulation of automobile fuel evaporative emission limit standards and air pollution control measures.
[09] The gas collection cover comprises a cover body and a support frame, and the cover body is connected to the support frame. The support frame 1s designed to ensure the overall stability of the cover.
[10] The cover body is a flexible cover body, and when not in use, the cover body can be folded up, not only avoiding that the gas collection cover occupies more space, but also facilitating the carrying of the gas collection cover.
[11] The support frame is provided with an air inlet hole and an air outlet hole, the air inlet hole and the air outlet hole are both in communication with the air collection cavity, the first pipeline 1s connected to the air outlet hole, and the second pipeline is connected to the air inlet hole, which is designed to facilitate the processing of the air inlet hole and the air outlet hole.
[12] One end of the gas delivery pipe remote from the gas collecting cover is provided with a chuck which is connected to the oil inlet of the oil tank in a sealed manner, and the chuck is provided on the gas delivery pipe to facilitate the sealed connection between the gas delivery pipe and the oil inlet of the oil tank.
[13] An activated carbon pipe is connected to the first pipeline, and the activated carbon pipe can effectively adsorb the remaining oil and gas in the first pipeline to ensure that the oil and gas is sufficiently collected, thereby ensuring the accuracy of the measurement result.
[14] A pressure reducing valve is provided on the second pipeline, a pressure gauge is provided on the gas collection cover, and the pressure reducing valve is adjusted according to the pressure difference between the inside and the outside of the gas collection cover to ensure the gas flow rate, thereby ensuring that the process of collecting oil and gas does not promote or reduce the evaporation rate of oil and gas in the normal refueling process, so that the gas of the oil and gas cylinder can stably enter the gas storage tank, thereby obtaining a relatively accurate measurement result.
[15] The gas delivery pipe is connected to the gun barrel outlet in a sealed manner via a throat hoop and the connection between the gas delivery pipe and the gun barrel outlet 1s facilitated in the case of achieving a seal.
[16] A flow restriction valve is provided on the first pipeline, which can limit the speed of the mixed gas in the gas collection cavity entering the gas storage tank, extend the time of the mixed gas entering the gas storage tank, ensure a sufficient refueling time, and thus ensure the accuracy of the measurement result.
[17] A silane layer is provided on the inner side of the gas collection cover, and the silane layer is formed on the inner side of the gas collection cover through silanization treatment on the inner side of the gas collection cover, so as to reduce the adsorption of oil and gas by the gas collection cover and ensure the accuracy of the measurement result.
BRIEF DESCRIPTION OF THE DRAWINGS
[18] Fig. 1 is a schematic view showing the structure of an oil vapor evaporative emission collection device according to the present invention;
[19] Fig. 2 is a schematic view showing a structure in which the cover of Fig. 1 is folded,
[20] Fig. 3 is a schematic view of the hood of Fig. 2 during deployment;
[21] Fig. 4 is a schematic view of the cover of Fig. 3 fully extended;
[22] In the figure: 1l-tank; 12-sucker; 13-gas delivery pipe; 14, cover body, 15-ring support frame; 16-pressure gauge; 17-barrel; 18-fuel gun; 19-first pipeline; 20-activated carbon tube, 21-flow restriction valve, 22-gas storage tank; 23-second pipeline; 24-pressure reducing valve; 25-gas cylinder.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[23] In order that the objects, aspects and advantages of the invention will become more apparent, a more particular description of the invention will be rendered by reference to the appended drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not restrictive of the invention, i. E. the embodiments described are only partial embodiments of the invention and are not all embodiments of the invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and delabeled in a variety of different configurations.
[24] The features and properties of the present invention are described in further detail below with reference to examples.
[25] Example 1 of a device for collecting oil and gas evaporative emissions of the present invention:
[26] as shown in Fig. 1, the device for collecting oil and gas evaporative emissions comprises a gas collection cover, a gas storage tank 22 and a gas cylinder 25, wherein the gas collection cover has a gas collection cavity for collecting the evaporated oil and gas, a barrel inlet and a barrel outlet are provided on the gas collection cover, the barrel inlet and the barrel outlet are both in communication with the gas collection cavity, the barrel inlet is provided for insertion of a barrel 17 of a fuel gun 18, and the barrel outlet is provided for stretching of the barrel 17 of the fuel gun 18;
[27] In the present embodiment, the gas storage tank 22 is in communication with the gas collection cavity via a first pipeline 19 for storing oil and gas; the gas cylinder 25 communicates with the gas collecting cavity through the second pipeline 23, and is used for charging gas into the gas collecting cavity so as to squeeze the oil and gas in the gas collecting cavity into the gas storage tank 22. Wherein the gas storage tank 22 constitutes a gas storage container, the gas storage tank 22 is a Suma tank, and the inner wall surface of the Suma tank is silanized; the first pipeline 19 and the second pipeline 23 are made of 5 silicone rubber.
[28] In this embodiment, the gas in the gas cylinder 25 is pure nitrogen or a mixed gas of oxygen and nitrogen arranged in a volume ratio (1: 3.78) to simulate air.
[29] In this embodiment, the gas collection cover comprises a cover body 14 and an annular support frame 15, wherein the cover body 14 is connected to the inner side of the annular support frame 15, and the gas collection cavity is formed by an inner cavity of the cover body 14, wherein a barrel inlet and a barrel outlet are both provided on the cover body 14. In other embodiments, the cover comprises two hemispherical cover units, the annular support frame connects the two cover units, and the inner cavity enclosed by the annular support frame and the two cover units constitutes the gas collecting cavity. In other embodiments, the gas collection cover may include only a cover body.
[30] In the present embodiment, the ring-shaped support frame 15 is formed in a ring shape as a whole, and serves to support the unfolded cover body 14.
[31] In the present embodiment, the cover body 14 is a flexible cover body, and preferably, the cover body 14 is a spherical cover body made of silicone rubber; when not in use, the cover body 14 is folded up inside the annular support frame 15, as shown in Fig. 2; in use, the cover 14 is pulled apart, as shown in Fig. 3, and the cover 14 is fully extended as shown in Fig. 4.
[32] In this embodiment, the inside of the cover 14 is silanized to form a silane layer on the inside of the cover 14 to reduce the adsorption of oil and gas.
[33] In the present embodiment, an air inlet hole and an air outlet hole are provided on the annular support frame 15, the air inlet hole and the air outlet hole are both in communication with the air collecting cavity, a first pipeline 19 is connected to the air outlet hole, and a second pipeline 23 is connected to the air inlet hole; wherein the air inlet hole is provided in the middle of the annular support frame 15, and the air outlet hole is provided at the bottom of the annular support frame 15.
[34] As shown in Fig. 1, an activated carbon pipe 20 and a flow restriction valve 21 are connected to the first pipeline 19, and the activated carbon pipe 20 can effectively adsorb the remaining oil and gas in the first pipeline 19, ensuring that the oil and gas are sufficiently collected, thereby ensuring the accuracy of the measurement result; the flow restriction valve 21 can restrict the speed at which the mixed gas in the gas collection chamber enters the gas storage tank 22, extend the time for the mixed gas to enter the gas storage tank 22, and ensure a sufficient refueling time. In other embodiments, activated carbon tubes may not be provided.
[35] In the present embodiment, a pressure reducing valve 24 is provided on the second pipeline 23, a pressure gauge 16 is provided on the top of the annular support frame 15, and the pressure reducing valve 24 is adjusted according to the pressure difference between the inside and outside of the cover body 14 so as to ensure the flow rate of gas, thereby ensuring that the process of collecting oil and gas does not promote or reduce the evaporation rate of oil and gas in the normal refueling process, so that the gas in the oil and gas cylinder can stably enter the gas storage tank 22, thereby obtaining a relatively accurate measurement result.
[36] In the present embodiment, the device for collecting oil and gas evaporative emissions further comprises a gas delivery pipe 13 for delivering oil and gas into the gas collection cavity, one end of the gas delivery pipe 13 is connected to the gun barrel outlet in a sealed manner via a throat hoop; the other end of the gas delivery pipe 13 is provided with a chuck 12; the chuck 12 is pressed at the oil inlet of the oil tank 11, and air between the chuck 12 and the surface of the liquid inlet of the oil tank 11 is squeezed out; and under the action of the external atmospheric pressure, the chuck 12 is pressed at the surface of the oil inlet of the oil tank 11, so that the chuck 12 closely conforms to the surface of the oil inlet of the oil tank 11, so as to achieve the effect of sealing and fixing, thereby achieving the sealed connection of the gas delivery pipe 13 at the oil inlet of the oil tank 11.
[37] The specific application method is as follows: the gas storage tank 22 is cleaned with pure nitrogen multiple times until the internal impurity gas is negligible, and is evacuated to 30 kPa; a flow restriction valve 21 is mounted on the first pipeline 19; the activated carbon tube 20 is weighed with a high-resolution balance, the initial mass ml is recorded, the two ends of the activated carbon tube 20 are capped, and connected to the first pipeline 19, and the two ends of the first pipeline 19 are respectively sealed and connected to the gas storage tank 22 and the annular support frame 15; the pressure reducing valve 24 is connected to the second pipeline 23, and two ends of the second pipeline 23 are respectively sealed and connected to the gas cylinder 25 and the annular support frame 15; a pressure gauge 16 is mounted on top of the annular support frame 15. Secondly, the cover body 14 on the annular support frame 15 is pulled away, the barrel 17 of the refueling gun 18 is inserted from the barrel inlet of the cover body 14 and protrudes from the barrel outlet, then the barrel inlet is connected to the barrel 17 in a sealed manner via a throat hoop, and the barrel outlet is connected to the gas transmission pipe 13 in a sealed manner via the throat hoop; then, a chuck 12 is pressed at the oil inlet of the oil tank 11, and the air is pressed out, so that the chuck 12 is hermetically connected at the oil inlet of the oil tank 11. Once again, the gas cylinder 25 and the pressure reducing valve 24 are opened to allow the gas to slowly enter the cover body 14, and the gas storage tank 22, the flow restriction valve 21 and the fuel filling gun 18 are opened at the same time; according to the change of the pressure gauge 16 on the annular support frame 15 during the oil filling process, the pressure reducing valve 24 is timely adjusted to simulate the air flow rate, so that the internal and external pressures of the cover body 14 are constant; after the refueling is finished, the gas bottle 25 and the gas storage tank 22 are closed, the oil filling amount Ll of the oil filling gun 18 and the volume V of the gas storage tank 22 are recorded, the activated carbon tube 20 is removed, the two ends of the activated carbon tube 20 are capped, a second weighing is performed, and the mass m2 is recorded; the
TVOC in the gas storage tank 22 is quantitatively analyzed by GC-MS to obtain its concentration pl. Finally, the fueling vapor emission factor is recorded using the following formula.
EP (my — my) +p, x10 6x v
[38] ba
[39] Wherein: EF is the oil and gas evaporative emissions of VOCs, mg/L; my is the weight of activated carbon tube before weighing, mg; m: is the weight of the activated carbon tube after weighing, mg; pi is the concentration of VOCs gas detected by Summa canister laboratory, ug/m?; V is the tank volume of the Summa canisters, L; Li is the vehicle refueling amount, L.
[40] According to the present invention, evaporated oil and gas is effectively collected through the gas collection cover, and the internal and external pressure of the gas collection cover is maintained through a gas cylinder to avoid the evaporation of oil and gas is too fast or too slow. The oil and gas is stored through the gas storage tank, and the evaporation amount of oil and gas in the process of refueling is obtained by means of subsequent weighing and laboratory detection, so as to quantitatively obtain the evaporation discharge amount of oil and gas in the process of refueling, which provides a basis for the formulation of automobile fuel evaporation emission limit standards and air pollution control measures.
[41] Example 2 of a device for collecting oil and gas evaporative emissions of the present invention:
[42] this embodiment differs from embodiment 1 in that in embodiment 1, the gas collection cover comprises a cover body 14 and an annular support frame 15, wherein the cover body 14 is connected to the annular support frame 15, wherein the cover body 14 is a flexible cover body. In this embodiment, the gas collection cover comprises a cover body and a support frame, wherein the cover body is a flexible cover body and the support frame is a cross. In other embodiments, the cover may be a rigid cover.
[43] Example 3 of a device for collecting oil and gas evaporative emissions of the present invention:
[44] This embodiment differs from embodiment 1 in that in embodiment 1, the gas collecting cover comprises a cover body 14 and an annular support frame 15, the annular support frame 15 is provided with an inlet hole and an outlet hole, the inlet hole and the outlet hole are both in communication with the gas collecting cavity, the first pipeline 19 is connected to the outlet hole, and the second pipeline 23 is connected to the inlet hole. In this embodiment, in the case where the gas collection cover includes a cover body and a ring-shaped support frame, the gas inlet holes and the gas outlet holes are provided on the cover body.
[45] Example 4 of a device for collecting oil and gas evaporative emissions of the present invention:
[46] This embodiment differs from embodiment 1 in that in embodiment 1, one end of the gas delivery pipe 13 remote from the gas collecting cover is provided with a chuck 12, and the chuck 12 is sealingly connected to the oil inlet of the oil tank 11. In this embodiment, the cover body is a hard cover body, one end of the gas delivery pipe remote from the gas collection cover is a bellmouth structure, the inner side of the bellmouth is provided with a sealing gasket, and the bellmouth is sealingly connected to the oil inlet of the oil tank via the sealing gasket.
[47] While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (4)

ConclusiesConclusions 1. Inrichting voor het verzamelen van olie- en gasverdampingsemissies, die gekenmerkt wordt door het omvatten van het volgende: een gasverzamelingsbedekking met een gasverzamelingsholte voor het verzamelen van verdampte olie en gas, waarbij een mondstukinlaat en een mondstukuitlaat verschaft zijn op de gasverzamelingsbedekking, waarbij de mondstukinlaat en de mondstukuitlaat beide in communicatieve verbinding staat met de gasverzamelingsholte, waarbij de mondstukinlaat verschaft is voor het invoegen van een mondstuk of een brandstofpistool en waarbij de mondstukuitlaat verschaft is voor het uitrekken van de mondstuk van het brandstofpistool; een gasafgiftepijp voor het afgeven van olie en gas in de gasverzamelingsholte, waarbij één eind van de gasafgiftepijp afdichtend verbonden is met de mondstukuitlaat en waarbij het andere eind van de gasafgiftepijp afdichtend verbonden is met de olie- inlaat van de olietank; een gasopslaghouder die in communicatieve verbinding staat met de gasverzamelingsholte via een tweede pijpleiding voor het opslaan van het gemengde gas; een gascilinder die in communicatieve verbinding staat met de gasverzamelingsholte via een tweede pijpleiding voor het opladen van gas in de gasverzamelingsholte om olie en gas in de gasverzamelingsholte te persen in de gasopslaghouder.An apparatus for collecting oil and gas vaporous emissions, characterized by comprising the following: a gas collecting cover having a gas collecting cavity for collecting vaporized oil and gas, a nozzle inlet and a nozzle outlet being provided on the gas collecting cover, the nozzle inlet and the nozzle outlet are both in communicative communication with the gas collection cavity, the nozzle inlet being provided for insertion of a nozzle or a fuel gun and the nozzle outlet being provided for extending the nozzle of the fuel gun; a gas delivery pipe for delivering oil and gas into the gas collection cavity, one end of the gas delivery pipe being sealingly connected to the nozzle outlet and the other end of the gas delivery pipe being sealingly connected to the oil inlet of the oil tank; a gas storage container in communicative communication with the gas collection cavity via a second pipeline for storing the mixed gas; a gas cylinder communicating with the gas collecting cavity through a second pipeline for charging gas in the gas collecting cavity to press oil and gas into the gas collecting cavity in the gas storage container. 2. Inrichting voor het verzamelen van olie- en gasverdampingsemissies volgens conclusie 1, met het kenmerk dat de gasverzamelingsbedekking een bedekkingslichaam en een steunframe heeft en dat het bedekkingslichaam vastgemaakt is op het steunframe.The oil and gas evaporative emissions collecting device according to claim 1, characterized in that the gas collecting cover has a cover body and a support frame, and the cover body is fixed on the support frame. 3. Inrichting voor het verzamelen van olie- en gasverdampingsemissies volgens conclusie 1, met het kenmerk dat de bedekking een flexibele bedekking is.An apparatus for collecting oil and gas evaporative emissions according to claim 1, characterized in that the cover is a flexible cover. 4. Inrichting voor het verzamelen van olie- en gasverdampingsemissies volgens conclusie 2, met het kenmerk dat de steunframe voorzien is van een luchtinlaatpoort en een luchtuitlaatpoort, waarbij beide van de luchtinlaatpoort en de luchtuitlaatpoort in communicatieve verbinding staan met de gasverzamelingsholte, waarbij de eersteThe oil and gas evaporative emissions collecting device according to claim 2, characterized in that the support frame is provided with an air inlet port and an air outlet port, both of the air inlet port and the air outlet port being in communicative communication with the gas collecting cavity, the first S11 - pijpleiding verbonden is met de uitlaatpoort en de tweede pijpleiding verbonden is met de inlaatpoort.S11 - pipeline is connected to the outlet port and the second pipeline is connected to the inlet port.
NL2030668A 2022-01-24 2022-01-24 Device for collecting oil and gas evaporative emissions NL2030668B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2030668A NL2030668B1 (en) 2022-01-24 2022-01-24 Device for collecting oil and gas evaporative emissions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2030668A NL2030668B1 (en) 2022-01-24 2022-01-24 Device for collecting oil and gas evaporative emissions

Publications (1)

Publication Number Publication Date
NL2030668B1 true NL2030668B1 (en) 2023-08-03

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NL2030668A NL2030668B1 (en) 2022-01-24 2022-01-24 Device for collecting oil and gas evaporative emissions

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NL (1) NL2030668B1 (en)

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