蘭州：西水東調(diào)第三干管東延工程有望于今年蘭馬賽后開(kāi)建，防水套管及伸縮接頭將大量使用
日前，從蘭州市城鄉(xiāng)建設(shè)局了解到，近日該局與蘭州威立雅水務(wù)有限責(zé)任公司邀請(qǐng)住建部制水專家、清華大學(xué)環(huán)境科學(xué)與工程系教授張曉健，在蘭威水務(wù)集團(tuán)指導(dǎo)枯水期水質(zhì)保障工作。蘭州市西水東調(diào)第三干管東延工程有望于今年蘭馬賽后開(kāi)建，該工程完工后，西起西沙大橋、東至雁灘黃河大橋的第三條輸水干管，將全部變?yōu)橹睆?.6米的干管，將對(duì)東城區(qū)的供水形成巨大補(bǔ)充和保障。屆時(shí)工程所配套柔性防水套管及伸縮接頭將大批量應(yīng)用。
河南泰宇管道科技有限公司伸縮接頭系列產(chǎn)品：SSQ鑄鐵伸縮器、VSSJA-2（B2F）雙法蘭限位伸縮接頭，VSSJA-1(BF)型單法蘭限位伸縮接頭，VSSJA(AF)型法蘭式松套伸縮接頭，SSJB(AY)型壓蓋式伸縮接頭，SSJB(BY)型壓蓋式限位伸縮接頭。Henan Taiyu Pipeline Technology Co., Ltd. expansion joints series products: SSQ iron expansion device, VSSJA-2 (B2F) double flange limited telescopic joint, VSSJA-1 (BF) type single flange limited telescopic joint, VSSJA (AF) flange type loose set of expansion joints, SSJB (Ay) type gland type expansion joints, SSJB (by) type gland type limited telescopic joint.
伸縮接頭安裝注意事項(xiàng)
嚴(yán)禁用伸縮器變形的方法來(lái)調(diào)整管道的安裝超差，以免影響伸縮器的正常功能、降低使用壽命及增加管系、設(shè)備、支承構(gòu)件的載荷。
安裝過(guò)程中，不允許焊渣飛濺到波殼表面，不允許波殼受到其它機(jī)械損傷。管道安裝完畢后，應(yīng)盡快拆除波伸縮器上用作安裝運(yùn)輸?shù)狞S色輔助定位構(gòu)件及緊固件，并按設(shè)計(jì)要求將限位裝置調(diào)到規(guī)定位置，使管系在環(huán)境條件下有充分的補(bǔ)償能力。
伸縮器所有活動(dòng)元件不得被外部構(gòu)件卡死或限制其活動(dòng)范圍，應(yīng)保證各活動(dòng)部位的正常動(dòng)作。
水壓試驗(yàn)時(shí)，應(yīng)對(duì)裝有伸縮器管路端部的次固定管架進(jìn)行加固，使管路不發(fā)生移動(dòng)或轉(zhuǎn)動(dòng)。對(duì)用于氣體介質(zhì)的伸縮器及其連接管路，要注意充水時(shí)是否需要增設(shè)臨時(shí)支架。水壓試驗(yàn)用水清洗液的96氯離子含量不超過(guò)25PPM。
雙法蘭限位伸縮接頭主要應(yīng)用于自來(lái)水、污水及各種水管線中，通常是和閥門配套安裝。伸縮接頭的位移伸縮性能極大方便了管道的安裝，在后期的管道維護(hù)、維修中也發(fā)揮著極大的方便作用，是管路中不可缺少的管道附件產(chǎn)品。
雙法蘭限位伸縮接頭結(jié)構(gòu)簡(jiǎn)單合理，安裝檢修方便，與閥門配合安裝，效果特別明顯。
雙法蘭限位伸縮接頭密封圈與管子為柔性連接，對(duì)連接的管子精度要求低，對(duì)工況條件要求極低。
雙法蘭限位伸縮接頭管道為柔性連接，消除了管道系統(tǒng)彈性應(yīng)力轉(zhuǎn)移，實(shí)現(xiàn)了補(bǔ)償，提高了系統(tǒng)的安全性。
The double flange limited telescopic joint is mainly used in tap water, sewage and various water pipe lines, and is usually matched with the valve. The displacement expansion performance of the expansion joint is greatly convenient for the installation of the pipeline, and the pipeline maintenance and repair in the later stage also play a great role.
The double flange limited telescopic joint is simple and reasonable in structure, convenient in installation and maintenance, and in cooperation with the valve, the effect is particularly obvious.
The sealing ring and the pipe are flexible connections, and the precision requirement of the connecting pipe is low, and the requirement of the working condition is extremely low.
The flexible connection of the two flange joints is flexible, which eliminates the elastic stress transfer of the pipeline system, realizes the compensation and improves the safety of the system.
