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液化氣EN(干式接頭)13175加注標準

時間：2020-10-29 13:12:43 來源：永龍閥門閱讀：0次

液化氣EN(干式接頭)13175加注標準

液化烴

New Coupling to meet LPG Tanker Standard

符合液化氣罐車加注標準的自密封干式接頭

繼歐盟27國之后，超過30個國家采用了DGC液化氣自封加注形式

As per a Bulletin issued by the Liquefied Petroleum Gas Safety Association of Southern Africa (LPGSASA) and further legislated by the Department of Employment and Labour, Cam-and-Groove type Couplings are no longer permitted for use in gas tanker applications and should be replaced with a suitable Dry Break Coupling System. The industry has until 30 September 2020 to conform.

根據南非液化氣安全協會(LPGSASA)發布的公告以及勞動就業部的進一步立法，液化氣罐車已不再允許使用雙扣式開放接頭，而應當更換合適的干式接頭系統。全行業必須在2020年9月30日前達到此標準。

Several incidents involving Cam-and-Groove type couplings have driven this change placing the onus on all industry players to address the risks associated with the use of this type of end-fitting and make the legislated changes.

雙扣式接頭引起的幾起事故推動了這一變化，液化氣行業的所有參與者都有責任解決由于使用開放式接頭引起的風險并進行法律更新。

The Dry Break Coupling System will ensure that your fleet is not only legal and compliant to international standards but will ensure the safety of your Staff, your Assets and the Environment. Whilst the shift comes at a cost, increased productivity provides a short payback and an attractive return on investment.

干式接頭系統不僅將確保您的車隊是合法運營、符合國際標準的，而且能確保您的工作人員、您的資產與環境的安全。盡管這一轉變需要付出一定代價，但生產率提高能帶來短期的投資回報以及誘人的投資收益。

Jachris, Africa’s largest supplier of Hose and Couplings, has a range of products to assist you in this regard which includes but is not limited to Dry-Break Couplings (Hose and Tank Units), Tank Unit Pressure Caps and LPG Suction & Delivery Hose.

Jachris是非洲最大的軟管和接頭供應商，在這一方面有一系列的產品可以為您提供幫助，包括但不限于干式接頭（公頭端和母頭端），公頭壓力保護蓋與液化氣排吸軟管。

Jachris proposes the use of a 3-inch coupling with a 2-inch flange to meet the new South Africa National Standard 1518, which is in line with international LPG safety standards. The new regulations were promulgated at the end of March providing a deadline of 1 October for all South African refineries to only fill LPG tankers fitted with new Dry Break Couplings. This means that industry must change its LPG equipment and coupling components over the next few months as refineries will no longer fill any that are still using Cam-and-Groove couplings.

建議使用帶有2寸法蘭末端接口的3寸干式接頭，以符合南非1518國家標準，該標準同時符合國際液化氣安全標準。3月底頒布的這些新條例規定南非所有煉油廠必須在10月1日截止日期之前通過換裝干式接頭的罐車進行液化氣裝卸。這意味著液化氣行業必須在接下來的幾個月內更換其液化氣設備和接頭配件，因為煉油廠將不得再使用雙扣式接頭進行液化氣加注。

The LPG industry took a positive decision on the sizing of the Dry Break Couplers. The current Cam-and-Groove systems are all 2-inch while the international standard changed to 3-inch for liquid filling and 2-inches for vapour. The majority of the LPG tankers in South Africa are fitted with 2-inch valves and piping, and changing the liquid filling to 3-inch is a potential challenge. Jachris, in partnership with their supplier Manntek of Sweden, designed a suitable 3-inch tanker unit complete with a 2-inch flange to suit the existing tanker valve flanges, resolving most of the technical challenges for the tanker owners by avoiding a complete system rebuild.

液化氣行業對干式接頭的尺寸做出了一項積極的決定。當前的雙扣式接頭系統均為2英寸，然而國際標準已將液體加注更改為3英寸，將回氣管路更改為2英寸。南非的大多數液化氣罐車僅裝有2英寸的閥門和管道，因此將加注更改為3英寸是一個潛在的挑戰。Jachris與其瑞典供應商Manntek（曼太柯）合作，設計了一個合適的配有2寸法蘭末端的3寸公頭，以適應現有的罐車閥門所帶的法蘭接口，避免了整個系統的改造，從而解決了罐車所有者面臨的大部分技術問題。

The reasons for the change include that Cam-and-Groove couplers are not safe in LPG applications and have resulted in fatalities in South Africa. LPG filling takes place at approximately 25 bar of pressure and when strict operational procedures are not followed, Cam-and-Groove couplers can be potentially fatal. A coupling under pressure that comes loose due to poor clamping/crimping, failure to follow the required operational procedures or unplanned disengagement between tanker and port can cause serious injury or even death to the operator. Furthermore, Cam-and-Groove couplers also lead to excess spillage compared to the Dry Break Couplers and can contribute to the loss of thousands of Rand worth of LPG per tanker per year.

做出這一改變的原因在于在液化氣的應用中，雙扣式接頭并不安全，已經造成南非多起死亡事故。在25bar左右的壓力下，液化氣會發生泄漏；如果未遵循嚴格的操作程序，雙扣式接頭可能是致命的。由于壓接不良而導致載壓環境下的接頭松動，未遵循操作程序或罐車與接收站的脫離可能嚴重傷害操作者甚至造成人身傷亡事故。此外，與干式接頭相比，雙扣式接頭可能會導致液化氣的過量泄漏，并且可能造成罐車每年數千蘭特（南非貨幣單位）液化氣的損失。

Dry Break Couplings are used to prevent excess spillage. They protect people and property from dangerous and costly exposure by keeping hazardous liquids and vapours in-line and out of the environment. Dry Break Couplings are used at liquid or vapour transfer points where you do not want product loss. Using Dry Break Couplings will reduce the hazards typically found when handling or processing LPG. These couplers also allow spill-free handling for loading and unloading tank trucks, rail tankers and tank containers. This minimisation of spillage and product loss keeps the environment free from hazardous vapours and liquids.

液化氣干式接頭能防止超預期泄漏，保護人員和財產免受液化氣爆炸產生的損失。如果您不想氣體或者液體滴漏，可以在氣液相的接駁處使用干式接頭。干式接頭的采用將會降低處理或加工液化氣時通常會發生的危險。這種類型的接頭同樣能保證公路罐車、鐵路罐車和罐式集裝箱的無泄漏裝卸。泄漏與液體物料損失較小化可以使環境免受有害氣體和液體的影響。

Preliminary investigations have revealed that in South Africa and surrounding Southern African Development Community (SADC) countries, there are approximately 300 tankers that must be converted. Most South African tankers are built with 2-inch piping systems on the trucks with corresponding 2-inch safety valves. The major concern associated with changing to 3-inch liquid filling was that some serious size adaptors would be required from 2-inch to 3-inch to make the change possible, adding complexity and cost. Fortunately, the valve and pipes will not be required to change as the size change does not make it incompatible. Certain flow restrictions would occur, but it would only nominally reduce the full potential of a 3-inch line. Most tankers would require a minimum of one 3-inch liquid fill tanker unit and one 2-inch vapour tanker unit. A full 3-inch pipeline and valve system would provide a time filling advantage. The new tankers that will be built in South Africa or imported will be built according to new size and standards.

初步調查顯示，在南非以及周邊的南非發展共同體（SADC）國家，目前大約有300輛罐車必須要改裝。南非大多數的槽罐車裝配的都是2寸的管道系統以及配套的2寸安全閥。而更改成3寸的液體加注會帶來一個主要問題，即需要一些尺寸較大的母頭（2寸至3寸）才能進行更改，這樣一來就會增加復雜性與成本。幸運的是，由于尺寸改變不會使其不兼容，無需更換閥門和管道。盡管有一定的流量會被限制，但名義上只會降低3寸管道的流量。大多數的罐車至少需要一個3寸的液體加注公頭和一個2寸的氣體用公頭。使用3寸的管道和閥門系統將會在加注時提供時間優勢。南非將會根據新的尺寸與標準建造或進口新的罐車。

At refinery level, the filling stations or bays would have to potentially be supplied with new hose assemblies fitted with female hose Dry Break Couplers, but we anticipate that these will already be in place by now. Fortunately, there are far fewer filling points in a refinery that would require new hose assemblies than there are tankers requiring new coupling systems.

煉油廠必須要為加氣站提供新的軟管總成，該總成需要裝配帶有內螺紋的干式接頭，但我們估計這些設備已經安裝到位。幸運的是，與需要新接頭系統的罐車相比，在煉油廠，需要新軟管總成的加注點（母頭端的應用）要少得多。

There should be no barriers to installing the new couplers. While the initial capital outlay could be perceived as high, data proves that the efficiency gains outweigh the cost of conversion significantly with a noticeably short payback period. This is before one even considers the improved safety and environmental conditions created by the legislated change.

安裝新接頭應該沒有任何障礙。盡管最初的資本支出可能會很高，但數據證明，效益的提高遠遠超過更換成本，投資的回收期非常短。在此之前，人們甚至未曾考慮通過變更立法帶來安全與環境條件的改善。

The Dry Break Coupling Systems are generally usable across different gas or fluid types with the exception of a seal kit change. Coupling Systems can often be colour-coded or keyed specifically to avoid the mismatching of hose/couplings for their respective media.

此外，更換密封件，干式接頭系統可用于不同的油品或液體。干式接頭可以專門進行顏色/機械編碼以避免不同介質軟管和接頭的錯誤對接。

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