軌道式旋塞閥的密封性能和使用壽命優于普通的閘閥和球閥。具備防火、在線維修、雙關斷及泄放、中腔泄壓、內檢漏等功能，在油氣儲運系統的功能及應用，開辟了油氣儲運系統的工藝設計新的發展空間，解決了管道設計中遇到的很多問題，既優化了管道設計，提高了產品質量，又節約了管道運營成本retz品牌 The sealing performance and service life of the rail type plug valve are superior to those of the ordinary gate valve and ball valve. It has the functions of fire prevention, online maintenance, double shutoff and relief, middle chamber pressure relief, internal leak detection, etc. It has opened up a new development space for the process design of oil and gas storage and transportation system, solved many problems encountered in pipeline design, optimized pipeline design, improved product quality, and saved pipeline operation costs.

進口軌道式旋塞閥規范說明/Description of specifications

設計制造標準API6D 

結構長度標準∶ASMEB16.10 

連接法蘭標準∶ASMEB16.5 

壓力溫度等級ASMEB16.34 

試驗檢驗標準∶API598、API6D

進口軌道式旋塞閥結構特點/Structural Features

1、 閥門在開關過程中，閥體密封面與滑片密封面沒有任何接觸，因此，密封面無摩擦、磨損、閥門的使用壽命長，開關力矩小 In the valve's opening/closing process,there is no contact between the sealing surfaces of the valve body and the vane,so the sealing surfaces suffer neither friction nor wear, contributing to the valve's long service life and small opening/closing torque

2、 閥門在維修時，不需將閥門從管線上拆下，只需將閥門底蓋拆開，調換一對滑片即可，維修十分方便 For the valve's maintenance, there is no need to remove the valve from the pipeline but just remove its bottom cover to replace the vane pair,thus very easy for the maintenance

3、 閥體及旋塞為縮徑或全通徑，介質在通過閥門時無流阻，并且可通球對管道進行清洗，克服了縮徑閥門的缺點 The valve's body and plug are reduced-bore or full-bore so that the medium can flow through the valve without any flow resistance,and it's also possible to clean the pipeline with pigging to overcome the shortcomings of the reduced bore valve

4、 全通徑和縮徑將軍閥的閥體內腔鍍有硬鉻，密封區域堅硬光滑 The cavity of the full-bore/reduced-bore general valve is plated with hard chrome and the sealing area is hard and smooth

5、 滑片上的彈性密封采用氟橡膠，并且模壓成型在滑片表面溝槽中。具有防火功能的金屬對金屬的密封作為彈性密封的背襯 The elastic seal on the vane is made of the fluorine rubber and molded and formed in a groove of the vane surface.The fireproof metal-to-metal seal is used as the backing of the elastic seal

6、 閥門具有自動泄放裝置(備選),在閥門完全關閉后，防止閥腔異常升壓并檢驗閥門的效果 The valve is provided with an automatic bleed device (optional)which can prevent the abnormal pressure rise of the valve cavity and check the valve's effect after the valve is completely closed

7、 閥門開關指示器與開關位置同步，可以準確顯示齒輪傳動全通徑將軍閥的開關狀態 The valve's opening/closing indicator is in sync with the opening/closing position and can accurately display the gear drive full-bore general valve's opening/closing status

工作原理/Working Principle

閥門關閉 Close the valve 

軌道式旋塞閥關閉時，先旋轉手輪，將旋塞及密封滑片旋轉90°,然后旋塞向下移動，隨著旋塞的運動時推動密封滑片向 閥體內腔封面直至彈性密封圈被均勻地擠壓到閥孔上下端，形成密封。

To close the valve, first rotate the handwheel to rotate the cock and the sealing vanes by 90°;then the cock will move downwards; the moving cock drives the sealing vanes to the sealing surfaces of the valve cavity until the elastic gasket ring is uniformly pressed to the upper and lower ends of the valve bore to achieve sealing

閥門開啟 Open the valve

閥門開啟時，先旋轉手輪提升旋塞，將密封滑片從閥體兩側密封面拉回。當滑片完全收回脫離閥體密封面后，繼 續轉動手輪，使旋塞及密封滑片旋轉90°,閥門處于開啟位置retz品牌 To open the valve, first rotate the handwheel to lift the cock to pull back the sealing vanes from the sealing surfaces on both sides of the valve body. When the vanes are completely withdrawn and disengaged from the sealing surfaces of the valve body, continue to rotate the handwheel so as to make the cock and the sealing vanes rotate by 90°,and the valve will be on the open

關于密封/About sealing

彈性密封圈是模壓成型在滑片的溝槽中，隨著密封滑片向閥門的進出口移動，密封圈子也逐漸被壓入溝槽中，經過機械加工的滑片表面與閥 體內腔形成二級金屬對金屬密封防止彈性密封圈子繼續被壓，并且具有防火功能。

The elastic gasket ring is molded and formed in the groove of the vanes,and as the sealing vanes move to the valve's inlet and outlet, the gasket ring is also gradually pressed into the groove. The machined vane surace forms a secondary metal-to-metal seal with the valve cavity which can prevent the elastic gasket ring from being further pressed and also have a fireproof function.

雙關雙斷及泄放/Double block and bleed

這是一種通過兩個切斷閥和一個在其中間的泄放閥達到完全隔斷兩端管線目的方法，關閉兩主要閥門關，開啟泄放閥可提高該系統的安全 性。如果第一個閥門泄漏，泄漏的介質可由開啟的泄放閥導出。

This is a way to achieve complete containment of both ends of the pipeline with two block valves and one bleed valve in between.When the two main valves are closed,closing/opening the bleed valve can improve the system's safety, If the first valve leaks, the leaked medium can be led out by the opened bleed valve.

雙密封方式/Double sealing mode

兩個獨立的密封滑片在閥孔上下端壓緊(雙關斷),當閥門關閉時，泄放閥被打開，檢驗密封效果(泄放)。

The two separate sealing vanes are compressed on upper and lower ends of the valve bore(double block), and when the valve is closed, the bleed valve will be opened to check the sealing effect (bleed),

主要零部件材料 Main parts and materials