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Reducing valve

The technology of a pressure reducing valve and a valve body is applied in the field of pressure reducing valves, which can solve the problems of small adjustable range of output pressure of pressure reducing valve and limit the application scope of pressure reducing valve, and achieve the effect of expanding the adjustable range and expanding the scope of application.

Inactive Publication Date: 2014-07-23
HANGZHOU WORLDWISE VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned pressure reducing valve can only use the orifice on the disc to decompress once, resulting in a small adjustable range of output pressure of the pressure reducing valve, which limits the application range of the pressure reducing valve

Method used

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Embodiment Construction

[0039] The embodiment of the present invention provides a pressure reducing valve, which expands the adjustable range of the output pressure of the pressure reducing valve, thereby expanding the application range of the pressure reducing valve.

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] Please refer to the attached Figure 1-4, the pressure reducing valve provided by the emb...

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Abstract

The invention provides a reducing valve which comprises a valve body with a fluid passageway, a valve seat dividing the fluid passageway into an inflow passageway body and an outflow passageway body, a valve deck covering the valve body and provided with a guide passageway, a valve rod movably arranged in the guide passageway, a valve clack arranged at the working end of the valve rod and provided with multiple second throttling holes communicated with the outflow passageway body, and a sleeve arranged in the inflow passageway, wherein the second throttling holes are located in the end, close to the outflow passageway body, of a first sealing part, the valve clack is sleeved with the sleeve in a slidable mode and in seal fit with the sleeve. The two end faces of the sleeve are connected with the valve seat and the valve deck respectively in a sealed mode, multiple first throttling holes communicated with the inflow passageway body are formed in the sleeve, and the first throttling holes and the second throttling holes can be communicated with each other when the valve rod moves. By means of the reducing valve, through the first throttling holes and the second throttling holes, double-throttling decompression is achieved for fluid, the adjustable range of output pressure of the reducing valve is widened, and the application range of the reducing valve is widened as well.

Description

technical field [0001] The invention relates to the technical field of valves, more specifically, to a pressure reducing valve. Background technique [0002] The pressure reducing valve can decompress high-parameter steam to make the steam pressure meet the requirements of the production process. It is widely used in power stations, petrochemicals, coal chemical industries, textiles, metallurgy and other industrial fields. It is a key component of supercritical and ultra-supercritical units. The performance of the pressure reducing valve directly affects the safe operation of the unit and the energy conversion efficiency. [0003] Most of the existing pressure reducing valves are provided with orifices on the valve disc, and the valve disc also has a sealing part that can be in sealing contact with the valve seat; when the pressure reducing valve needs to be closed, the sealing part of the valve disc is in sealing contact with the valve seat , and then cut off the fluid cha...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K1/52F16K1/36F16K1/38F16K47/04F16K47/08
CPCF16K1/00F16K1/36F16K1/38F16K1/52F16K39/024F16K47/04F16K47/08
Inventor 陈立龙张明刘儒亚虞闻斌王晖
Owner HANGZHOU WORLDWISE VALVE
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