Direct-acting type pressure regulator for compensating for spring effect

A technology of compensating springs and pressure regulators, which is applied in the direction of valve operation/release devices, function valve types, and lift valves. The effect of voltage regulation accuracy and high voltage regulation accuracy

Pending Publication Date: 2020-08-25
内蒙古鑫广进燃气设备有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A high-quality pressure regulator needs to reduce the spring effect as much as possible. There are roughly the following methods to reduce the spring effect in the existing technology: 1. Reduce the spring stiffness of the pressure regulating spring. This method can properly reduce the spring effect , but the adjustment range of the spring will be reduced; 2. The main diaphragm adopts rolling diaphragm technology, but the effect is not great; 3. The method of built-in signal tube is also called the method of taking negative pressure. The port of the signal tube must be placed in the adjustment In the pressure field in the outlet cavity of the compressor, where the pressure is lower, this pressure must be lower th

Method used

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  • Direct-acting type pressure regulator for compensating for spring effect
  • Direct-acting type pressure regulator for compensating for spring effect
  • Direct-acting type pressure regulator for compensating for spring effect

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Example Embodiment

[0016] Such as figure 1 As shown, the pressure regulator structure in the prior art includes: a main valve body 1 and a drive assembly 2. The main valve body 1 is installed at the lower end of the drive assembly 2. The main valve body 1 is equipped with a valve seat 11, a valve disc 12, and a valve stem. 13. The valve stem sleeve 14 and the balance diaphragm 15, the valve stem sleeve 14 is fixed on the upper end of the main valve body 1, the valve stem 13 is arranged in the valve stem sleeve 14, the valve disc 12 is fixed on the lower end of the valve stem 13, the valve disc 12 is located in the valve On the lower side of the seat 11, the balance diaphragm 15 is installed on the upper side of the valve stem sleeve 14. The balance diaphragm 15 is set to improve the unbalanced force of the valve core, so that the outlet pressure can not be affected by the change of the inlet pressure to a certain extent. Improve the voltage regulation accuracy. The drive assembly 2 includes an up...

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Abstract

The invention relates to a direct-acting type pressure regulator for compensating for a spring effect. The direct-acting type pressure regulator comprises a main valve body and a drive assembly, the main valve body is installed at the lower end of the drive assembly, a valve seat, a valve disc, a valve rod, a valve rod sleeve and a balance diaphragm are assembled inside the main valve body, the drive assembly comprises an upper diaphragm shell, a lower diaphragm shell, a diaphragm and a tray, the outer peripheral wall of the tray and the inner peripheral wall of the lower half part of the upper diaphragm shell form an annular installation cavity with a V-shaped cross section, the diaphragm upwards forms an annular protrusion with the omega-shaped cross section in the annular installation cavity upward, the lower diaphragm shell is connected with a signal pipe, and the signal pipe is used for communicating with a pipe connected to an outlet end of the main valve body. According to the direct-acting type pressure regulator, a traditional direct-acting type pressure regulator is transformed, and when the diaphragm and the tray move from bottom to top after being stressed, an effectivearea of the diaphragm is gradually increased; and when the diaphragm and the tray move from top to bottom after being stressed, the effective area of the diaphragm is gradually reduced, the spring effect of the pressure regulator is effectively compensated, and the pressure regulator can achieve high voltage stabilization accuracy.

Description

technical field [0001] The invention relates to the field of gas pressure regulating devices, in particular to a direct acting pressure regulator for compensating spring effects. Background technique [0002] A pressure regulator is a special valve on a pipeline that automatically adjusts the outlet pressure to stabilize it within a certain pressure range. Pressure regulators are divided into direct-acting regulators and indirect-acting regulators. The working principle of the direct-acting regulator is to use the outlet pressure change of the regulator to directly control the drive assembly to drive the movement of the regulating element. The main component of the drive assembly is the diaphragm. There is a pressure regulating spring inside the pressure regulator. When working, the pressure regulating spring will change the compression amount with the opening of the valve disc. Therefore, the spring force varies with the opening of the valve disc. Change, this change affec...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K1/36F16K1/32F16K1/48F16K31/365F16K17/30
CPCF16K1/00F16K1/32F16K1/36F16K1/48F16K17/30F16K31/365
Inventor 吴伟功蒋东杰齐旭
Owner 内蒙古鑫广进燃气设备有限责任公司
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