Adjustment of Piston Fence Level and T Fence Shift of Flexible Seal Gasholder
ZHANG Chang-ming,F(xiàn)ENG Yi-shan
Abstract:The level degree deviation of piston fence platform of a flexible seal gasholder with 5×104m3 is too large due to uneven tension of wire rope for piston auto-leveling device. When the piston rises or falls,the even contact or separation between the piston fence platform and T fence can not be maintained,which generates a serious shift during T fence reset. The adjusting method is that first the tension of wire rope for piston auto-leveling device is finely adjusted,then the level degree of piston fence platform is recovered to the design requirement and the shift of T fence is finely adjusted with a jack,so the level degree deviation of piston fence platform and the shift of T fence are recovered to the normal range.
Key words:flexible seal gasholder;piston auto-leveling device;piston fence platform;T fence
② 鋼絲繩張力均衡是保證活塞圍欄平臺水平度的關鍵。因此,反復調(diào)整鋼絲繩張力,使每個鋼絲繩組之間的最終張力差≤10%。鋼絲繩為柔索,由于其結構決定了鋼絲繩張力具有不可復原的特性,因此,每次反復調(diào)整鋼絲繩張力時,就必須將每個鋼絲繩組之間的張力差控制在5%以內(nèi),否則無法保證每個鋼絲繩組之間的最終張力差≤10%。
③ 活塞反復上升或下降,反復檢查、調(diào)整活塞圍欄平臺的水平度,使活塞圍欄平臺的水平度(高差)保持在允許的范圍內(nèi),設計最大水平度(高差)≤50mm。
② 當活塞上升到2m、4m、6m、8m、10m、12m、……、20m或下降到相應的位置時,a.測量T圍欄整體與壁板之間的實際偏移量,實際偏移量≤30mm;b.測量T圍欄平臺的傾斜量,最大傾斜量≤20mm;c.測量T圍欄與活塞圍欄平臺之間的實際偏移量,最大偏移量≤20mm;d.測量活塞圍欄平臺的傾斜量,最大傾斜量≤10mm。