Buffered wall flow multi-channels flame arrester

Patent metadata

Field	Value
Publication number	US-11465003-B2
Application number	US-201816627105-A
Country	US
Kind code	B2
Filing date	Aug 2, 2018
Priority date	Jul 18, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

The present invention belongs to the field of flame arresters, and discloses a buffered wall flow multi-channels flame arrester. The flame arrester comprises a buffering and splitting cover and a Z-type wall flow multi-channels flame arresting core, wherein the buffering and splitting cover has a round-bottom plain-top cylindrical shape or hemispherical shape, with pinholes distributed in the cover surface, and channels are arranged inside the Z-type wall flow multi-channels flame arresting core. In every two adjacent channels, the inlet of one channel is blocked, and the outlet of the other channel is blocked, and in the height direction in the central cross section of the flame arresting core, pinholes are arranged in the wall surfaces between adjacent channels, and adjacent upper and lower channels constitute a fluid channel.

First claim

The invention claimed is:

1. A buffered wall flow multi-channels flame arrester, comprising a gas inlet pipeline, two pairs of flange groups, a flame arrester shell, a gas outlet pipeline, a buffering and splitting cover, and a multi-channels flame arresting core, wherein the flame arrester shell comprises a front wall and a back wall, the gas inlet pipeline is connected to the front wall of the flame arrester shell via a first flange group, the back wall of the flame arrester shell is connected to the gas outlet pipeline via a second flange group, the buffering and splitting cover and the multi-channels flame arresting core are installed between the front wall and the back wall of the flame arrester shell, and an opening of the buffering and splitting cover is fixedly connected to the multi-channels flame arresting core; the front wall and the back wall of the flame arrester shell are fixed by flame arrester flanges, a flame arrester expansion chamber is formed in the front wall and the back wall of the flame arrester shell respectively;
and wherein, the buffering and splitting cover has round-bottom plain-top cylindrical gratings or hemispherical gratings, a hollow inside and the opening is toward the back wall of the flame arrester shell; and wherein rectangular holes, square holes, rhombic holes, round holes, slotted holes, hexagonal holes, or octagonal holes are distributed in the entire cover surface.

2. The buffered wall flow multi-channels flame arrester according to claim 1 , wherein, the inner diameter of the flame arrester expansion chamber is 2.5 times the diameter of the gas inlet pipeline, and both of the divergence angles of the front wall and the back wall of the flame arrester shell are 120° .

3. The buffered wall flow multi-channels flame arrester according to claim 1 , wherein, in the case that the buffering and splitting cover has round-bottom plain-top cylindrical gratings, the inner diameter of the cover is equal to the diameter of the gas inlet pipeline, and the length of the cover is equal to the inner diameter of the cover.

4. The buffered wall flow multi-channels flame arrester according to claim 1 , wherein, in the case that the buffering and splitting cover has hemispherical gratings, the inner diameter of the cover is equal to the inner diameter of the flame arrester expansion chamber, and the length of the cover is equal to ½ of the inner diameter of the flame arrester expansion chamber.

5. The buffered wall flow multi-channels flame arrester according to claim 1 , wherein, the multi-channels flame arresting core is a Z-type wall flow multi-channels flame arresting core, the outer wall of the Z-type wall flow multi-channels flame arresting core contacts with the inner wall of the flame arrester shell, several layers of fluid channels are arranged inside the Z-type wall flow multi-channels flame arresting core, each fluid channel comprises a channel A and a channel B, wherein the outlet of the channel A is blocked, and the inlet of the channel B is blocked, and pinholes c are arranged in the wall surfaces between adjacent channels, so that the channel A communicates with the adjacent channel B at one side, and communicates with an adjacent channel B′ at the other side.

6. The buffered wall flow multi-channels flame arrester according to claim 1 , wherein, the multi-channels flame arresting core is a Z-type wall flow multi-channels flame arresting core, the outer wall of the Z-type wall flow multi-channels flame arresting core contacts with the inner wall of the flame arrester shell, several fluid channels are arranged inside the Z-type wall flow multi-channels flame arresting core, each fluid channel comprises a channel A and a channel B, wherein an outlet of the channel A is blocked, and an inlet of the channel B is blocked, and pinholes c are arranged in the wall surfaces between adjacent channels, so that the channel A communicates with adjacent channels B, B 1 , B 2 , and B 3 at the upper, lower, left, and right sides.

7. The buffered wall flow multi-channels flame arrester according to claim 5 , wherein, the channel A and the channel B have the same height.

8. The buffered wall flow multi-channels flame arrester according to claim 5 , wherein, all of the pinholes c are in the same height direction in the central cross section of the Z-type wall flow multi-channels flame arresting core, and the diameter of the pinholes c is equal to 1 to 2 times of the height of the channel A.

9. The buffered wall flow multi-channels flame arrester according to claim 1 , wherein, the flame arrester shell, the buffering and splitting cover, and the multi-channels flame arresting core are made of carbon steel or stainless steel.

10. The buffered wall flow multi-channels flame arrester according to claim 6 , wherein, the channel A and the channel B have the same height.

11. The buffered wall flow multi-channels flame arrester according to claim 6 , wherein, all of the pinholes c are in the same height direction in the central cross section of the Z-type wall flow multi-channels flame arresting core, and the diameter of the pinholes c is equal to 1 to 2 times of the height of the channel A.

Assignees

• Univ Jiangsu

Inventors

• Zhu Yuejin
• Pan Zhenhua
• Yang Zhiwei
• Zhang Penggang
• Pan Jianfeng

Classifications

• A62C4/02 Primary

  in gas-pipes (safety valves F16K17/00) · CPC title