The development trend of valve Multi-turn valve driving device connection method (2)

The development trend of valve Multi-turn valve driving device connection method (2)

Xuanyi valve Co., Ltd. is a comprehensive high-tech enterprise integrating r&d, manufacturing, sales and service of valves, pumps and motors. The main products are butterfly valve, ball valve, gate valve, globe valve, check valve, control valve, safety valve, pressure reducing valve, filter, trap valve, butterfly valve, hydraulic control valve and so on.
The development of nuclear industry, petrochemical industry, electronic industry and aerospace industry, as well as the process of automatic control and long-distance fluid transport development, promote the development of modern low-temperature valves, vacuum valves, nuclear industry valves and various regulating valves. Valve actuation devices for remote control and program control are increasingly used. The development trend of valves is:
Xuanyi valve co., ltd. is located in the famous “town of China pump valve”, the modern factory covers an area of 23300m2 and has more than 670 employees, including 7 senior engineers and 21 engineers. The enterprise introduces foreign advanced technology, carries on the modernization large-scale production, has equipped the German processing center, China Taiwan numerical control lathe, the super large precision vertical lathe, the automatic painting line and other mechanical processing and the first equipment more than 300 sets. Has a modern R & D design center, quality testing center.
① Expand product parameters, such as the larger diameter of the valve has reached 10 meters, the lower working pressure has reached 1.33×10-8 pa, ball valve and butterfly valve are developing in the field of high temperature and high pressure.
The development of energy saving, labor saving and automatic control valve. In order to reduce fluid transport energy consumption and steam heat loss and the development of ball valves, butterfly valves and traps; In order to meet the development requirements of industrial automation and development of various electric, pneumatic, hydraulic drive valves and various control valves.
③ Improve the structure, the use of new materials and new technology, improve the service life of the valve. Such as the use of elastic structure, lubrication structure to reduce the sealing force and torque of the valve, with plastic, titanium alloy and other manufacturing valves, with expanded graphite and other new materials to make packing, the use of cemented carbide and ptfe materials as sealing surface, using a variety of new surface strengthening process to improve the life of the valve.
(4) Develop the best valve series, such as low temperature valve for liquid oxygen, liquid hydrogen and liquefied natural gas, vacuum valve, nuclear industry valve, safety valve, regulating valve, trap and valve drive device, etc.
(2) The structure of the drive is shown in Figure 3. The connection example of the drive device and the valve (valve stem) is shown in Figure 4. The dimensions of the drive are specified in Table 3. * The structure of the drive that can transfer torque is shown in Figure 5. The connection example between the drive device and the valve (valve stem) is shown in Figure 6. The dimensions of the drive are specified in Table 4. Size D5 shall be greater than or equal to 1.05 times D6 or DX capable of both torque transfer and thrust drive * capable of torque transfer drive…
Connection: connection mode of multi-turn valve drive device (I)
6, the structure and size of the drive parts
It can both transfer torque and withstand thrust drive parts
The structure of the drive that can both transfer torque and bear thrust is shown in Figure 3. The connection example between the drive device and the valve (valve stem) is shown in Figure 4. The dimensions of the drive are specified in Table 3.
Size D5 shall be greater than or equal to 1.05 times D6 or DX
FIG. 3 Schematic diagram of the driving parts that can both transfer torque and withstand thrust
FIG. 4 Example of torque transfer and thrust driven assembly connection to valve
Table 3 Dimensions of drive parts that can both transmit torque and withstand thrust are in mm
* Drive parts that can transfer torque
* The structure of the drive that can transfer torque is shown in Figure 5. The connection example between the drive device and the valve (valve stem) is shown in Figure 6. The dimensions of the drive are specified in Table 4.