CN211574310U

CN211574310U - Pressure-reducing and noise-reducing valve seat

Info

Publication number: CN211574310U
Application number: CN201922494881.8U
Authority: CN
Inventors: 黄燕; 杨芳; 张芸芸
Original assignee: Wuxi Huayi Electric Power Valve Co ltd
Current assignee: Wuxi Huayi Electric Power Valve Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-25
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a disk seat of making an uproar falls in decompression, including fixed connection's valve gap and disk seat be provided with the cage that carries out steam one-level decompression between valve gap and the disk seat, valve rod core subassembly passes the middle part of valve gap for the flow of control steam. The utility model adds a first-stage pressure reduction at the valve seat, reduces the pressure difference of each stage, and can effectively prevent the pressure reducing valve from generating vibration and noise; the pressure reduction and noise reduction valve seat adopts a small hole design, so that the pressure reduction and noise reduction valve seat has a good noise reduction function; the pressure reducing valve can stably operate for a long time, and accurate control is realized.

Description

Pressure-reducing and noise-reducing valve seat

Technical Field

The utility model relates to a high pressure difference pipeline valve field is applied to the multistage decompression of relief pressure valve.

Background

High-pressure steam produced by power plants and chemical enterprises can be used for follow-up use after being decompressed. The pressure reduction is usually achieved by a pressure reducing valve, which performs a primary pressure reduction on the high-pressure steam. However, under the working conditions of large flow and high pressure difference, the primary pressure reduction can cause great influence on the valve, so that the valve generates vibration and noise.

Disclosure of Invention

The utility model aims at providing a disk seat of making an uproar falls in decompression that can carry out second grade decompression to the defect that prior art exists.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a disk seat of making an uproar falls in decompression, includes fixed connection's valve gap and disk seat be provided with the cage that carries out steam one-level decompression between valve gap and the disk seat.

Preferably, the side of the cage is provided with a throttling window for steam to enter and exit.

Preferably, the valve rod core assembly passes through the middle part of the valve cover and can completely cover the throttling window.

Preferably, the valve seat is designed by a small hole.

The utility model has the advantages that: the utility model reduces the pressure drop grade difference of each grade by adding the first-grade pressure reduction at the valve seat, and can effectively prevent the pressure reducing valve from generating vibration and noise; meanwhile, the pressure reduction and noise reduction valve seat adopts a small hole design, so that the pressure reduction and noise reduction valve seat has a good noise reduction function; the pressure reducing valve can stably operate for a long time through the two improvements, and accurate control is achieved.

Drawings

Fig. 1 is a schematic structural view of a pressure reducing and noise reducing valve seat.

Wherein: 1. valve seat, 2, valve body, 3 cages, 4, valve rod core subassembly, 5, valve gap.

Detailed Description

Shown as figure 1 is a disk seat of making an uproar falls in decompression, including fixed connection's valve gap 5 and disk seat 1 be provided with the cage 3 that carries out the decompression of steam one-level between valve gap 5 and the disk seat 1, the side of cage 3 is equipped with the throttle window that is used for business turn over steam, and valve stem core subassembly 4 passes the middle part of valve gap 5 just can cover completely the throttle window, disk seat 1 adopts the aperture design.

Steam enters the upper cavity from the inlet of the valve body 2 and then enters the cage 3 between the valve cover 5 and the valve seat 1 to carry out primary pressure reduction; the steam after pressure reduction enters the valve seat 1 for secondary pressure reduction; the steam after the secondary decompression enters the lower cavity of the valve body 2 and enters the next working procedure; the flow of the steam is realized by adjusting the throttling window of the cage by the valve rod core assembly 4. The valve seat 1 adopts a small hole design, so that the valve seat has a good silencing function.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure-reducing and noise-reducing valve seat is characterized by comprising a valve cover and a valve seat which are fixedly connected, wherein a cage for performing primary steam pressure reduction is arranged between the valve cover and the valve seat; the valve seat adopts a small hole design.

2. A pressure reducing and noise reducing valve seat as defined in claim 1 wherein the cage is provided with throttling windows on its sides for the ingress and egress of steam.

3. A pressure reducing and noise reducing valve seat as defined in claim 2, wherein the stem core assembly passes through a middle portion of the valve cover and completely covers the throttling window.