Modular differential pressure bottle head valve

Abstract

The invention discloses a modular differential-pressure bottle valve. The modular differential-pressure bottle valve comprises a valve body, a valve port and a piston arranged inside the valve body. A top cap is arranged at the top of the valve body. A needle valve is arranged inside the top cap. A thin groove is formed in the side face of the piston in the axis direction of the piston. An air collection plug is arranged at the position, directly facing the thin groove of the piston, on the side face of the valve body. A rupture disk unit, a monitor plug, a solenoid valve plug and a pressure gauge plug are arranged on the side face of the valve body. The modular differential-pressure bottle valve has multiple functions, is convenient to maintain and update, the matter is uniformly ejected when articles inside a bottle are released, and usage is reliable.

Description

technical field [0001] The invention relates to the field of high-pressure storage bottle equipment, in particular to a modular differential pressure bottle head valve. Background technique [0002] At present, the traditional bottle-head valves on the market are mainly composed of valve body, piston, valve cover, gland and discharge diaphragm. When starting this type of bottle-head valve, it is necessary to rely on external force to pierce the discharge diaphragm, and the gas in the bottle passes through the piston. The inner hole on the base replenishes air upwards. Since the steel wire is set in the inner hole, the air replenishment speed of the inner hole is reduced, and the air replenishment speed is much lower than the deflation speed. Pipette to release the medium in the cylinder. Due to the punctured diaphragm structure, the traditional bottle head valve needs to replace the diaphragm many times during use, and the use and maintenance process is more complicated. Af...

AI Technical Summary

Problems solved by technology

Due to the punctured diaphragm structure, the traditional bottle head valve needs to replace the diaphragm many times during use, and the use and maintenance process is more complicated. After the diaphragm is pierced, the gas will always leak out, and it is not easy to control the gas flow. As a result, the traditional bottle head valve is unreliable in use. At the same time, because the diaphragm is usually made of stainless steel, it needs a large external force to pierce it. When the electromagnetic start-up uses a common coil, the power required is relatively large, and a suitable explosion-proof striker cannot be provided. Type starter, in petrochemical, offshore oil or other dangerous places where explosion-proof electromagnetic starters are required, traditional bottle head valves cannot be used

Moreover, the traditional bottle head valve usually assembles the pressure gauge on the inflatable head, and compresses the sealing gasket through the fastening nut to achieve a tight seal, and connects or isolates the pressure gauge by tightening or loosening the fastening nut. Due to problems such as the sealing performance of the valve, the traditional bottle head valve is usually only suitable for loosening the fastening nut when checking the pressure in the gas cylinder, and it is always tightened at ordinary times. The pressure gauge is isolated from the gas cylinder and does not display the pressure value. caused a certain degree of inconvenience to users

At the same time, the structure of the blasting cock on the traditional bottle head valve is a bursting disc and a gasket, and the protection is realized by pressing the bursting disc and the gasket. Since it is impossible to connect the medium in the bottle with other conveying pipelines in advance during blasting, so In extreme cases, the medium in the cylinder can only be released directly locally, which will easily cause safety hazards and chemical pollution in the cylinder storage place

There are still many defects in the use of sealing rings in traditional bottle-head valves. Usually, at least 7 sealing rings need to be installed inside a traditional bottle-head valve. Too many sealing points lead to many leakage points, which are prone to air leakage, and cannot be repaired on site when air leakage is found. solve

The traditional bottle head valve also has no relevant interface to connect the monitor to monitor the pressure change in the bottle, so it cannot be applied to stricter industrial production applications

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