Oxygen balloon valve

Specifications

Technical specifications

Structural classification

✔ It can be divided into floating ball structure and fixed ball ball valve, through the use of special hardening treatment technology on the sealing surface of the ball seat, completely overcome the technical problems of cemented carbide bonding in the application of high-pressure, high-temperature and ultrapure gas, smooth and non-jamming, degreasing and degrease, waterproof and anti-static, and the sealing performance has reached the leakage level of level 6 for a long time.

Two-piece floating structure

Two-piece floating structure

1. Left valve body 2. Seat seal ring 3. Outlet seat 4. Sphere 5. Imported valve seat 6. Press Circle 7. Disc spring 8. Right valve body 9. Stem 10. Thrust pad 11. Packing 12. Packing Pressing Sleeve 13. Handle 14. Screws 15. Spring retaining ring 16. Limit plate 17. Packing platen

 

Three-piece fixed structure

1. Valve cover 2. Hex nuts 3. Legs 4. Stud 5. Disc spring 6. Press Circle 7. Seat seal ring 8. Valve seat 9. Winding pad 10. Screws 11. Bottom shaft 12. Winding pad 13. Lower Shaft Sleeve 14. Sphere 15. Valve body 16. Hanging ears 17. Upper shaft sleeve 18. Stem 19. Thrust pad 20. Winding pad 21. Cylindrical Pin 22. Stuffing Boxes 23. Packing 24. Packing sleeve 25. Screws 26. Packing platen 27. Studs 28. Hex nuts 29. Coupling 30. Brackets 31. Worm Gearbox 32. Studs 33. Hex nuts 34. screws

Product features:

▶ The small diameter adopts floating ball structure, and the large diameter adopts fixed ball structure meter.

The surface of the inner cavity of the flow channel through which the oxygen medium beam passes should be smooth, smooth, without edges, sharp corners, unevenness, and sudden changes, and the internal parts of the valve should be rounded at sharp angles, and the valve stem retraction groove should be rounded to ensure that there is no pressure convex change in the flow process, no convex change in the direction of the beam, and there can be no solids in the valve cavity, so as to prevent static electricity.

Special cemented carbide formula: completely integrated with the matrix, never peeling off, the thickness after processing is not less than 0.4mm. The hardness can be as high as HRC61~64, good oxidation resistance, good thermal conductivity, good electrical conductivity, low friction coefficient after degreasing, small heat generation, completely solve the problem of metal bonding, special for oxygen, nitrogen and hydrogen valves.

▶ Complete fireproof structure design

The sealing surface of the metal hard seal ball valve adopts a metal-to-metal sealing structure, the packing material is made of flexible graphite, and the gasket is wound with stainless steel + flexible graphite, so the valve ensures a reliable seal even in the event of a fire.

▶ Reliable stem design

▶ Medium flange quantitative compression design

Valve stem explosion-proof spray safety design
Targeted valve stem anti-wear design More than
2 times safety factor design
90° quick switch

▶ Reasonable sealing surface width design

The minimum sealing face width that can withstand the required sealing force is carefully calculated.

▶ Reliable anti-static structure design

In order to ensure the tightness and working safety of high-temperature and high-pressure oxygen valves, all factors that generate static electricity should be eliminated as much as possible. The high temperature and high pressure oxygen valve has both good sealing and safe anti-static performance.

Quantitative Preload Dynamic Active Load Seal Patent (Patent No. ZL202121859290.7) Design: The group of quantitative compression in an enclosed space provides a continuous sealing preload for the packing material, which can automatically compensate for packing leakage caused by changes in packing due to valve operation, temperature and pressure circulation and time-related changes in packing volume.

▶ Automatic pressure relief design in the middle chamber

⊙ After the valve is closed, when the pressure in the middle cavity of the valve is higher than the closing pressure, the torus formed by the outer diameter of the valve seat sealing ring and the middle diameter of the valve seat seal will push the valve seat on the side with lower pressure under the action of the medium pressure in the middle chamber to achieve automatic pressure relief and ensure the safety of the valve.

▶ The floating ball is equipped with a one-way sealing structure design as standard, and the fixed ball is equipped with a two-way sealing structure design as standard.

▶ The parts in contact with oxygen are all made of nickel-based alloy or ultra-low-carbon austenitic stainless steel.

▶ The fixed ball is equipped with double bearing positioning and protection structure design as standard.

▶ The whole valve machine and parts are strictly degreased and degreased.

▶ design of actuators and accessories

According to the working conditions of the medium, select high-performance valve actuators to meet the requirements of working conditions, and select original imported solenoid valves, position switch transmitters, air filtration pressure reducing valves and other accessories.

Dimensional data

Oxygen balloon valve

The gasifier is the core device of the coal gasification unit, with a combustion pressure of 4.0~6.3MPa and a temperature of 1100~1300°C, which is a highly dangerous device. Therefore, the safety and reliability of the gasifier are the first priority, and secondly, in order to ensure the stability of the reaction products, it is necessary to accurately control the flow of water, coal slurry and oxygen entering the gasifier.

In order to ensure the normal combustion state and ensure the safe operation of the gasifier, the flow rate of oxygen must be accurately controlled. The gasifier is generally equipped with three oxygen valves to control the oxygen flow into the gasifier, namely the oxygen flow control valve, the oxygen shut-off valve, and the oxygen venting valve. Compared with oxygen valves in general industrial processes, gasifier oxygen shut-off valves need to withstand high pressure differentials, large flow rates and strict sealing levels. The cut-off pressure difference of the oxygen shut-off valve can reach up to 5.0~7.0MPa, and the leakage level needs to reach V level.