Modularization spool structure of large-flow balance-type pressure regulating value

Abstract

The invention discloses a modularization spool structure of a large-flow balance-type pressure regulating value. The pressure regulating valve comprises a valve body (01), a valve deck (02), a spool component, an input channel (106) and an output channel (107) and is characterized in that the spool structure is of a modularization structure, namely, the spool component comprises a spool (03), wherein the spool (03) is installed on a valve base (18), and the valve base (18) is installed on the valve body (01) through a sealing nut (04). The technical scheme is adopted, the pressure regulating valve is suitable for different input pressures, and meanwhile, a core shaft of the valve has a design of the balance-type pressure regulating valve, and fluctuation of different inlet pressures is made to almost have no influence to regulation and stabilization of outlet pressure.

Description

technical field [0001] The invention belongs to the technical field of pressure regulating valves for liquid or gas. More specifically, the present invention relates to a modular spool structure of a large flow balanced pressure regulating valve. Background technique [0002] In the current domestic and foreign markets, large-flow regulators (such as flow rates greater than 100 Nm3 / h) mostly use traditional diaphragm structures. High, diaphragm structure is suitable. [0003] However, with the application of various fuel gases such as compressed natural gas (CNG) or liquids such as liquefied natural gas (LNG) in the automotive industry, traditional diaphragm pressure regulators often show many disadvantages under complex working conditions , such as rupture and wear of the diaphragm; inadaptability to the low temperature environment; and vibration of large flow and strong airflow, etc., directly affect the quality and service life of the product. [0004] However, other s...

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Problems solved by technology

[0003] However, with the application of various fuel gases such as compressed natural gas (CNG) or liquids such as liquefied natural gas (LNG) in the automotive industry, traditional diaphragm pressure regulators often show many disadvantages under complex working conditions , such as the rupture and wear of the diaphragm; the inadaptability to the low temperature environment; and the vibration of large flow and strong air flow, etc., directly affect the quality and service life of the product

[0004] However, other structures on the market, such as the piston structure, mostly use multi-stage decompression, which is complicated in structure and high in cost; the bellows structure has high requirements for bellows and high cost

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