Integral shut-off pressure regulator

Abstract

The invention discloses an integrated cut-off type pressure regulator. The integrated cut-off type pressure regulator is characterized in that the main structure of the integrated cut-off type pressure regulator comprises a regulating part, a balance valve core part, a cut-off part and a valve body. The integrated cut-off type pressure regulator provided by the invention has the advantages that the structure is simple, some module structures are divided, the size is compact, the space occupation is small, the online maintenance is convenient, an air inlet caliber of a product is DN50, an air outlet caliber is DN80, and the flow capacity is large; and a balance valve core structure is adopted, the pressure fluctuation is small, the applicable pressure range is wide, a steel ball affiliated cut-off structure is adopted, the sensitivity of cut-off movement is high, the replication property is good, the pressure setting of the cut-off movement is simple, and the range is wide.

Description

technical field [0001] The invention relates to a regulating device in a transmission and distribution system of an urban medium and low pressure gas pipeline network, in particular to an integrated cut-off pressure regulator. Background technique [0002] The main structure of the pressure regulator includes adjustment parts, balance parts, and cut-off parts; the traditional surface contact of the regulating valve stem is point contact, and the adjustment is inflexible. Due to long-term surface contact, the end of the regulating valve stem will be worn and rusted, and there will be adjustment problems. The disadvantages of instability and increased adjustment torque. The traditional balance parts are directly connected to the air hole to directly press the balance film, and the air flow directly scours the balance film, resulting in the rupture and failure of the balance film, which seriously affects the durability and service life of the balance film; and the closing and s...

AI Technical Summary

Problems solved by technology

[0002] The main structure of the pressure regulator includes adjustment parts, balance parts, and cut-off parts; the traditional surface contact of the regulating valve stem is point contact, and the adjustment is inflexible. Due to long-term surface contact, the end of the regulating valve stem will be worn and rusted, and there will be adjustment problems. The disadvantages of instability and increased adjustment torque

The traditional balance parts are directly connected to the air hole to directly press the balance film, and the air flow directly scours the balance film, resulting in the rupture and failure of the balance film, which seriously affects the durability and service life of the balance film; and the closing and sealing caused by processing errors and assembly errors The tightness and closing error will also affect the closing pressure level and accuracy of the product

The surface contact of the traditional cutting parts is point contact, which is inflexible when cutting. Long-term surface contact will cause the end of the cutting valve stem to wear and rust, and there will also be disadvantages of unstable cutting and ineffective cutting.

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