Noise reduction and rectification flow regulating valve for pipeline natural gas
A flow control valve, natural gas technology, applied in the valve's device for absorbing fluid energy, lift valve, valve details, etc., can solve the problems of laminar flow, turbulent flow, ultrasonic measurement interference, unstable flow rate, etc., and achieve a compact structure. , Overcome the effect of occupying a large space and reducing the difficulty of installation
Active Publication Date: 2021-01-12
CHANGZHOU UNIV
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is: in order to solve the structure of elbows, valves and joints in natural gas pipelines in the prior art, the gas is prone to laminar flow, turbulent flow and other phenomena, and the flow rate is very unstable, which brings a lot of problems to ultrasonic measurement. Interference, and serious noise problems, now provides a pipeline natural gas noise reduction rectification flow regulating valve
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Embodiment 1
[0039] Such as Figure 1-5 As shown, a pipeline natural gas noise reduction rectification flow regulating valve includes a valve body 1 with a valve cavity 102, a front rectifier 2, a valve core 3, a rear rectifier 5 and a driving mechanism. The front end of the valve body 1 has a The air intake channel 101 communicated with the cavity 102, the rear end of the valve body 1 has an air outlet channel 103 communicated with the valve cavity 102, and the valve core 3 is located in the valve cavity 102;
[0040] The front rectifying body 2 is installed in the air intake channel 101, and its front end face is a hemispherical surface. The front rectifying body 2 runs through a plurality of rectifying channel groups along the axial direction of the air intake channel 101, and each rectifying channel group All have a plurality of rectification channels 201 located in the same radial direction of the front rectifier body 2, and the plurality of rectification channel groups are distribute...
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The invention relates to the technical field of flow regulating valves, and particularly relates to a noise reduction and rectification flow regulating valve for pipeline natural gas. The noise reduction and rectification flow regulating valve comprises a valve body with a valve cavity, a front rectification body, a valve element, a rear rectification body and a driving mechanism, wherein the front rectification body is of a hemispherical structure, so that the length of a rectification channel close to the center is larger than that of a rectification channel close to the edge, the weakeningamplitude of the flow speed of gas in a gas inlet channel is gradually increased from the edge to the center, and weakening of the unevenness of a flow field is enhanced; the conical valve element ismatched with a conical section of the valve body, noise reduction can be achieved while flow is regulated, disordered gas fluid can pass through more easily, and secondary flow field disturbance cannot be formed; and then, rectification is conducted through rectification holes of the rear rectification body, finally, the flow speed of the gas is stable after two times of rectification and one timeof noise reduction, and favorable conditions are provided for subsequent flow measurement. The structure is compact, and the size is greatly reduced.
Description
technical field [0001] The invention relates to the technical field of flow regulating valves, in particular to a pipeline natural gas noise reduction rectifying flow regulating valve, which is widely used in natural gas transportation and settlement, restaurants, hotels and other fields. Background technique [0002] Ultrasonic gas flowmeter has the advantages of no resistance loss to gas, no pressure loss, little damage to pipeline structure, no contact with the measured gas, and not easily affected by its physical and chemical properties. It is widely used in natural gas measurement. [0003] Due to the existence of elbows, valves, joints and other structures in natural gas pipelines, the gas is prone to laminar flow, turbulent flow and other phenomena, and the flow rate is very unstable. It brings a lot of interference to the ultrasonic measurement. The common way to deal with it is to lengthen the straight pipe in front of the flowmeter, but enterprises and families ma...
Claims
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IPC IPC(8): F16K47/02F16K47/04F16K47/08F16K1/38F16K1/48F16K31/54F16K25/00F16K27/02
CPCF16K47/08F16K47/04F16K1/38F16K31/54F16K25/005F16K27/0254Y02T10/30
Inventor 佘世刚刘爱琦崔善书魏新尧
Owner CHANGZHOU UNIV
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