CN215928511U

CN215928511U - Device suitable for safety valve amortization

Info

Publication number: CN215928511U
Application number: CN202122194764.7U
Authority: CN
Inventors: 刘栋; 郑有全; 张勇勇; 石军福; 常维平
Original assignee: Zhongfu Shenying Carbon Fiber Xining Co ltd
Current assignee: Zhongfu Shenying Carbon Fiber Xining Co ltd
Priority date: 2021-09-11
Filing date: 2021-09-11
Publication date: 2022-03-01
Anticipated expiration: 2031-09-11

Abstract

The utility model provides a device suitable for silencing of a safety valve, which is provided with a safety valve rear steam pipeline DN65 and is connected with a ball valve, the ball valve is connected with a silencing structure, the structure is a multi-stage structure which is sequentially arranged from inside to outside, a first-stage expansion chamber, a second-stage multi-stage honeycomb structure and a third-stage sound absorption cotton are arranged, and in addition, a protective shell is arranged outside the silencing structure. According to the device, a large amount of steam enters the expansion chamber under the overpressure take-off state of the safety valve, so that the steam is depressurized and silenced, and in the process, airflow is sprayed out through multiple stages of different apertures of the silencer, so that the sound power of each frequency doubling band is reduced; and (3) reducing noise by using resistive sound absorption cotton additionally arranged outside the expansion chamber due to partial frequency secondary noise. The device can realize that the total noise elimination amount reaches 30-50 decibels.

Description

Device suitable for safety valve amortization

Technical Field

The utility model provides a production device for high-pressure steam in chemical industry, chemical fiber and use, in particular to a device suitable for silencing of a safety valve.

Background

In the production process of chemical engineering and chemical fiber, the steam noise is very high, and the harm to human body is large. However, in the safety valve, steam noise is inevitably generated. In chemical industry, chemical fibre scale production, a plurality of branch steam pocket use simultaneously, and the probability of relief valve take-off is great, and steam noise can be very frequent. Therefore, it is necessary to develop a high-efficiency safety valve silencing device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a device suitable for silencing a safety valve, which can effectively reduce steam noise, reduce occupational hazards and improve the working environment.

The utility model provides a device suitable for relief valve amortization, the device is equipped with steam line DN65 behind the relief valve to connect the ball valve, the amortization structure is connected to the ball valve, and this structure is the multilevel structure who sets gradually from inside to outside, and first order expansion chamber, the multilevel cellular structure of second level, third level sound absorption are cotton, sets up the protective housing outside amortization structure in addition.

The utility model adopts multiple times of noise elimination and noise reduction treatment, firstly adopts an expansion chamber to reduce pressure and eliminate noise, secondly adopts a porous honeycomb structure to eliminate noise, and thirdly adopts resistance sound absorption cotton added outside the expansion chamber to reduce noise. The expansion chamber is made of stainless steel, the multi-stage honeycomb noise elimination structure is made of stainless steel, and the resistive sound absorption cotton is polyester fiber resistive cotton. The diameter of the expansion chamber is about 20-50cm, the length is 50-120cm, the internal pore diameter is 10-20mm, the honeycomb pore diameter is 5-25mm, and the porosity of the polyester fiber resistive cotton is more than 98%. Steam enters the expansion chamber, is subjected to honeycomb silencing after pressure reduction, and is subjected to resistance cotton silencing. The steam pressure at the inlet of the expansion chamber is 0.5-1.5 MPa. The diameter of the steam pipe in front of the inlet of the expansion chamber is DN 50-100. The total sound eliminating volume of the device is 30-50 decibels.

Compared with the prior art, the utility model has the following remarkable advantages:

1. according to the device, a large amount of steam enters the expansion chamber under the overpressure take-off state of the safety valve, so that the steam is depressurized and silenced, and in the process, airflow is sprayed out through multiple stages of different apertures of the silencer, so that the sound power of each frequency doubling band is reduced; 2. expanding the resistance sound absorption cotton additionally arranged outside the chamber to reduce noise at partial frequency secondary noise; 3. the total sound-deadening quantity of the device reaches 30-50 decibels.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure, 1, a steam line DN65 behind the safety valve; 2. a ball valve; 3. an expansion chamber; 4. a honeycomb structure; 5. sound absorbing cotton; 6. a protective shell.

Detailed Description

The utility model is further explained below with reference to the examples and the figures.

The utility model relates to a device suitable for silencing a safety valve, which is provided with a safety valve rear steam pipeline DN651 and is connected with a ball valve 2, the ball valve 2 is connected with a silencing structure, the structure is a multi-stage structure which is sequentially arranged from inside to outside, a first-stage expansion chamber 3, a second-stage multi-stage honeycomb structure 4 and a third-stage sound absorption 5 cotton are arranged, and in addition, a protective shell 6 is arranged outside the silencing structure.

The following provides a description of one embodiment

The silencer is used in a polyacrylonitrile carbon fiber steam-separating drum. The first time adopts the expansion chamber to reduce the pressure and eliminate the noise, the second time adopts the porous honeycomb structure to eliminate the noise, and the third time adopts the resistance sound-absorbing cotton added outside the expansion chamber to reduce the noise. The expansion chamber is made of stainless steel, the multi-stage honeycomb noise elimination structure is made of stainless steel, and the resistive sound absorption cotton is polyester fiber resistive cotton. The diameter of the expansion chamber is about 35cm, the length is 100cm, the internal pore diameter is 15mm, the honeycomb pore diameter is 8mm, and the porosity of the polyester fiber resistance cotton is more than 98%. Steam enters the expansion chamber, is subjected to honeycomb silencing after pressure reduction, and is subjected to resistance cotton silencing. The steam pressure at the inlet of the expansion chamber is 1.0 MPa. The diameter of the steam pipe in front of the inlet of the expansion chamber is DN 65. The total noise reduction volume of the device is 35 decibels.

Claims

1. A device suitable for safety valve amortization which characterized in that: steam line DN65 behind the relief valve to connect the ball valve, the sound-absorbing structure is connected to the ball valve, and this structure is the multilevel structure who sets gradually from inside to outside, and first order expansion chamber, the multistage honeycomb structure of second level, third level sound absorption are cotton, sets up the protective housing outside sound-absorbing structure in addition.

2. The device of claim 1, wherein the device is adapted to muffle the safety valve by: the first stage expansion chamber adopt the material to be stainless steel material, multistage cellular noise cancelling structure adopts stainless steel material, and cotton adoption polyester fiber of hindering nature sound absorption is cotton.

3. A device suitable for silencing safety valves according to claim 1 or 2, characterized in that: the diameter of the expansion chamber is about 20-50cm, the length is 50-120cm, the internal pore diameter is 10-20mm, the honeycomb pore diameter is 5-25mm, and the porosity of the polyester fiber resistive cotton is more than 98%.

4. The device for silencing a safety valve according to claim 3, wherein: the steam in the expansion chamber is used for reducing pressure after entering, and is silenced through honeycomb shape and then through resistive cotton.

5. The device of claim 1, wherein the device is adapted to muffle the safety valve by: the steam pressure at the inlet of the expansion chamber is 0.5-1.5 MPa.

6. The device of claim 1, wherein the device is adapted to muffle the safety valve by: the diameter of the steam pipe in front of the inlet of the expansion chamber is DN 50-100.