Author:Site Editor Publish Time: 2019-12-02 Origin:Site
The structural characteristics of the high temperature and high pressure Y type globe valve are as follows:
List of content for this article：
1. The sealing face of Y type globe valve,
2. The valve stem for Y type globe valve,
3. The working conditions for Y type globe valve.
The sealing face of Y type globe valve
1. The wide sealing surface design can effectively extend the service life of the sealing surface. The sealing surface is welded with STL alloy, which is good in erosion resistance and wear resistance.
2. The secondary throttling structure design reduces the erosion of the sealing surface by the high-speed medium.
3. The Y-shaped inclination angle is 45°, and the flow path tends to be linear.
4. The valve flap adopts full-path guidance, and the guide surface is surfacing and wear-resistant alloy, which has good wear resistance; after the valve body and valve disc are finished, the guide gap between the valve flap and the valve body is strictly controlled; the large-diameter valve body outlet passage passage, The guiding ribs are arranged, and the guiding surface is finished to prevent the valve flap from being blocked at the outlet end of the valve during the movement.
The valve stem for Y type globe valve
5. The valve stem is made of high temperature resistant material, which has high strength and high hardness after heat treatment; the strength design has a large safety factor to prevent deformation and bending of the valve stem; the connection between the valve stem and the valve flap has a reasonable clearance. When the valve flap is subjected to the impact force of the medium, the lateral impact force is not transmitted to the valve stem, thereby ensuring that the valve stem has a better stress state.
The working conditions for Y type globe valve
6. In the high temperature and high pressure water vapor working condition, the medium cavity enhanced flexible graphite ring pressure self-tightening sealing form has the advantages that the graphite ring is easy to establish the initial specific pressure, and the middle cavity sealing is easy to realize; the online maintenance is convenient, the valve after disassembling, the valve body and stuffing box do not need to be repaired or replaced, the repair time is short, and the replacement of the graphite ring is convenient.
7. The valve adopts the self-tightening structure of the medium cavity pressure, and the structure is reasonable, and it is suitable for high temperature and high pressure working conditions.
The above is the relevant introduction of the structural characteristics of the high temperature and high pressure Y type globe valve.