Weir工程服務部成功地修復了自1972年以來一直持續使用的11個蝶閥，它們主要作為英國生物量轉化項目的一部分。

Weir工程服務部與Lynemouth電站合作，共同完成將工廠從燃煤型轉換為生物質發電廠的項目，包括對11個蝶閥和變速箱的徹底檢修。多年來經歷多家公司修理后，一個來自阿洛亞(蘇格蘭，克拉克曼南郡)服務機構的工程團隊克服了在不同狀況下的閥門維修挑戰。

這些閥門安裝于1972年，當時Lynemouth發電站才開始用煤發電。被Energetický a Pr潔礀猀氀漀瘀ý Holding (EPH)收購后，該項目確認將會轉換為生物質，并允許工廠生產高達420兆瓦的低碳電力。

客戶要求的質量標準需要有發現差異，詳細描述缺陷，磨損或損壞部件，以及擬議的維修策略等方面的大量報告。該團隊指出，經過了剝離、清潔和檢查的過程，包括無損檢測(NDT)后，大多數涂層已經磨損，有時甚至被剝離。齒輪箱和變速箱外殼上的執行器配件也遭受了嚴重的腐蝕。

Weir主管Brian Fairley評論說：“每個閥門都需要一個定制的設計，以滿足不同尺寸的盤片和軸封。為了進行這次檢修，我們的專家團隊測量了每個閥體和盤片，以計算所需的封口尺寸。閥門的軸承頸座已經經過多年的加工，并以不同的解決方案取而代之，并且，所有的解決方案都是定制的，所以我們有幸能遇到這個項目帶來的挑戰，并為客戶提供解決方案。”

軸封故障產生的碎屑，導致軸桿磨損。工程隊將重新加工并噴涂金屬表面以恢復所需的設計空間。此外，他們還同意修理標準尺寸，或拆除已安裝在閥門法蘭不同尺寸和位置的閥體法蘭孔的螺旋體。

除了這11個蝶閥和變速箱，Alloa和Teesside(英格蘭米德爾斯堡)的工程隊還完成了42臺渦輪減壓閥，3個蓋組件，3個原位座椅更換，48個閥門的現場檢修，7個冷凝抽泵，7臺增壓泵，2臺CW泵和2臺主鍋爐給水泵。另外還增加了兩個Nash泵進行檢修，而Weir團隊通過安裝所有檢修泵來支持Lynemouth。

工程師James White解釋說：“閥門的差異使備件識別和制造成為一個嚴峻的挑戰。不過，我們為客戶帶來了非常成功的結果。Lynemouth電站現在已經完成全部檢修，閥門還可以運作10年。

該項目已經完成，閥門正在返回現場，重新裝入工廠進行調試。我們現在的重點是為客戶提供終身資產支持，以確保未來的檢修工作得到保障。”

關于Weir集團

Weir集團雇有約 14,000 名員工，在 70 多個國家/地區開展業務，致力于為具有良好長期發展前景的市場提供服務。集團擁有成熟可靠的專業知識和技術，能夠在全球各地的礦場加工自然資源，也幫助從世界一些嚴苛作業環境中出產石油與天然氣。集團與客戶緊密合作，在礦業、石油與天然氣、電力與工業市場上為其提供可以提高效率并降低運營成本的產品和服務。

無論客戶在何時何地需要我們，我們都竭力滿足其需求，致力于成為值得客戶信賴的首選合作伙伴。

關于鼎恒石油

四川鼎恒石油是Weir SPM的授權代理商，若需要購買SPM產品或需要了解產品詳細參數及相關疑問，可直接進入鼎恒石油官網咨詢網站客服或者撥打銷售熱線18000522697。

四川鼎恒石油機械設備有限公司(http://www.kawai-kstw.com)是一家擁有進出口經營權，長期從事國內外石油天然氣設備和配件的專業銷售公司。鼎恒石油公司總部設在四川成都，在加拿大大不列顛哥倫比亞省成立了分公司。我公司與多家世界知名制造廠商建立了緊密的合作關系。

注：該文章由鼎恒石油編譯，轉發須注明出處。

附英文原文：

Delivering a major overhaul to support the Lynemouth Power Station conversion project

Weir Engineering Services successfully restored eleven butterfly valves which had been in continual use since 1972 as part of a biomass conversion project in the UK.

Weir Engineering Services has partnered with Lynemouth Power Station to contribute to the project that will convert the plant from a coal fired to a biomass fired power station, including the overhaul of eleven butterfly valves and gearboxes. An engineering team from service facility in Alloa (Clackmannanshire, Scotland) overcame the challenge of dealing with valves in very different conditions, after being repaired by several companies over the years.

The valves were installed in 1972 when Lynemouth Power Station started to generate electricity from coal. The project to convert the station to biomass was confirmed after its acquisition by Energetický a Pr潔礀猀氀漀瘀ý Holding (EPH), and will allow the plant to generate up to 420 megawatts of low carbon electricity.

The quality standards applied by the customer required an extensive report of the differences found, detailing defective, worn or damaged components, along with the proposed repair strategy. After a process of stripping down, cleaning and inspection, including Non-Destructive Testing (NDT), the team noted that most of the coating was worn and, in some cases, peeled off. Actuator mountings on the gearboxes and gearbox housing had also suffered severe corrosion.

Brian Fairley, Supervisor at Weir, commented: “Each valve required a bespoke design to cater for the variety of different dimensions for disc and shaft seals. In order to carry out the overhaul, our expert team measured each body and disc to calculate the required seal dimensions. The bearing trunnion housing of the valves had been machined out over the years and replaced with different solutions, again all solutions were bespoke, so we’re proud to have met the challenges posed by the project and delivered for this customer.”

The shafts had also suffered from wear due to the ingress of debris from failed shaft seals. The team machined them back and re-sprayed metal surfaces to recover the required design dimensions. They also agreed a standard size to repair, or removed the helicoils of the valve body flange holes, which had been fitted in different sizes and locations on valve flanges.

Along with the eleven butterfly valves and gearboxes, the teams in Alloa and Teesside (Middlesbrough, England) completed the overhaul of 42 turbine relief valves, three lid assemblies, three in situ seat replacements, 48 onsite overhauls of valves, seven condensate extraction pumps, seven booster pumps, two CW pumps; and two main boiler feed pumps. Two Nash pumps have also been added for overhaul and the Weir team is supporting Lynemouth by installing all overhauled pumps.

James White, Contract Engineer, explained: “The differences found in the valves made the spares identification and manufacturing a serious challenge. However, we’ve delivered a very successful result for the customer. As a result of this project Lynemouth Power Station now has fully overhauled valves fit for a further 10 years of power generation.

The project has now been completed and the valves are being returned to site to be refitted into plant for commissioning. Our focus now turns to providing the customer with lifetime asset support to ensure future overhaul works are safeguarded.”