進口金屬硬密封雙向壓蝶閥性能描述 Performance description

金屬硬密封雙向壓蝶閥閥座密封圈完全由金屬材料制成，且做表面硬化處理，就算啟閉頻繁，閥門仍能保持高的密封性能，杜絕了多層次密封結(jié)構(gòu)不耐沖刷等弊端，極大提高了閥門的使用壽命 retz品牌 The seat/seal ring is completely made of metal materials and dealt with ssurface hardening treatment so that the valve can be under high sealing performance even open/close with high frequency. Long life design protects the multi-layer sealing structure from eroding and other shortcomings, greatly improve the service life of the valve.

技術(shù)要求Applicable Standards

Design Code 設(shè)計標(biāo)準(zhǔn):API 609 Catalog B & ASME B16.34

Face to face 結(jié)構(gòu)長度:API 609 Category B, ANSI B16.10

ISO 5752 & BS EN 558 Series 3 / 13 / 14 / 19

DIN 3202 F4 / BS 515

Connection Standard 連接標(biāo)準(zhǔn):NPS 2"~24" ASME B16.5

Above 24" ASME B16.47 A / B

Testing / Inspection 試驗與檢驗:API 598

規(guī)格尺寸 Size : 2～40"

公稱壓力 Nominal pressure：PN10～160, CL150～900LB

適應(yīng)溫度 Applicable temperature ：-40～425℃

進口金屬硬密封雙向壓蝶閥偏心結(jié)構(gòu)說明Triple eccentric structure

●偏心1∶閥桿旋轉(zhuǎn)中心線與閥座中心線偏離一定距離，保證密封面的完整性；Eccentric 1: The centerline of rotation axis/stem and seat deviate from each other for a certain distance to ensure the integrity of the sealing surface;

●偏心2∶閥桿旋轉(zhuǎn)中心線與閥體中心線偏離一定距離，降低閥門啟閉時密封副之間的摩擦力 Eccentric 2: The centerline of rotation axis/stem and body deviate from each other for a certain distance to reduce the friction between the sealing components when open and close the valve.

●偏心 3∶閥體中心線與閥座圓錐密封面中心線偏離一定角度，使閥門開啟或關(guān)閉時，蝶板密封環(huán)與閥座之間迅速脫離或接觸，密封副之間無摩擦、無卡擠 Eccentric 3: The centerline of valve body and conical seat sealing face deviate from each other for a certain angle to ensure the sealing ring of the disc can be separated or touched with seat rapidly so that friction and squeeze will not exist between the sealing components.

填料密封的高性能High performance of packing sealing

采用組合式填料密封系統(tǒng)，確保閥門最大泄漏率≤20ppm?？蛇x用動載密封結(jié)構(gòu)，使填料持久密封，延長填料免維護周期 Adopt packing-combined sealing system to ensure the leakage rate≤20 PPM at maximum. the dynamic sealing structure is available if necessary, which make the packing sealing under good condition and prolong the free maintenance period of packing.

閥桿可設(shè)計成符合API609之規(guī)定的“防吹出”結(jié)構(gòu) retz品牌 The valve stem shall be designed with the "Blow-out Structure" in accordance with API609 standard.

依靠扭矩密封Sealing with Torque

閥門至始至終都能保持優(yōu)越的雙向密封性能，閥門密封不依靠介質(zhì)力，完全由驅(qū)動裝置提供的扭矩實現(xiàn)密封，閥門在高、低壓下均能可靠密封。密封性能檢測結(jié)果符合API609、ISO5208等標(biāo)準(zhǔn)之規(guī)定；

Sealing with torque keeps valve having superior two-way sealing performance. Valve completely sealed by torque of the actuator rather than forces produced by media, which makes valve sealed under high and low pressure unfailingly. Sealing performance test results meet the requirement of the API609, ISO5208 and other Standards that concerns.

本質(zhì)防火設(shè)計Essence of fire protection

全金屬密封副結(jié)構(gòu)，使閥門具有本質(zhì)防火特性，且測試結(jié)果符合API607的規(guī)定 Full metal sealing structure makes valve carry the property of fire protection and the test results comply with the provisions of the API607 Standard.

首先對本蝶閥進行API 598測試，正向和反向閥座密封泄漏均為零，殼體測試無外漏 The valve was tested first to API 598 with zero seat leakage in preferred and non-preferred directional and zero on shell before fire safe testing.

將此閥推入燃燒室, 燃燒溫度控制在750 ~ 1000℃, 火焰持續(xù)時間30分鐘。然后在反向閥座測試重復(fù)測試泄漏量 Valve during burn period is exposed to 750~1000℃ flames for duration of 30 minutes. Then the test is repeated in the non-preferred directional.

采用水淋方式快速降低閥門溫度至100℃以下 Rapid water quenching lowers the valve temperature to below 100℃. This is performed twice, once in each direction

閥座/密封圈可現(xiàn)場更換 Seat/sealing ring can be replaced on field 

可更換式閥座/密封圈設(shè)計，便于閥門現(xiàn)場維護保養(yǎng) Replaceable seat/sealing design makes valve easily maintained on field.

主要零部件材料 Main parts and materials