Zero-pressure-damage two-way high-speed explosion stop device for pipelines

Abstract

The invention discloses a zero-pressure-damage two-way high-speed explosion stop device for pipelines, belongs to the technical field of gas conveying safety protection, in particular, relates to a gas pipeline explosion stop device, and provides a device with millisecond closing, pneumatic returning, full-size zero pressure damage and two-way stop of the explosion propagation. The zero-pressure-damage two-way high-speed explosion stop device for pipelines comprises an energy storage mechanism, a cylinder block actuator, an explosion stop gate valve, an instant opening valve, an opening valveA, an opening valve B, a needle valve A and a needle valve B; the energy storage mechanism communicates with the cylinder block actuator through a pipeline; the instant opening valve is arranged on apipeline; the explosion stop gate valve is fixed under the cylinder block actuator; the opening valve A is arranged on a pipeline between the energy storage mechanism and the instant opening valve; the opening valve A is arranged in the connected place of the cylinder block actuator with the explosion stop gate valve; the needle valve A is arranged in the connected place of the cylinder block actuator with the pipeline; the lower rend of the cylinder block actuator communicates with the pipeline between the energy storage mechanism and the instant opening valve through a thin pipe; and the thin pipe is provided with the needle valve B.

Description

technical field [0001] The invention discloses a zero-pressure-loss two-way high-speed explosion blocking device for pipelines, which belongs to the technical field of gas transportation safety protection, and in particular relates to a gas pipeline explosion-preventing device. Background technique [0002] At present, whether it is natural gas, gas, coal bed methane, hydrogen, combustible dust, chemical gas and other flammable and explosive media pipeline transportation, there is a need for explosion safety protection. Existing explosion protection mostly uses dry-type flame arresters, explosion vents, anti-tempering, explosion suppression devices, etc. These technologies can be applied to different protection requirements, but there is a risk of failure to block explosions due to overfire. In order to achieve effective physical resistance A valve-type device for shutting off the transmission is required. [0003] Existing valves are usually divided into manual or electric...

AI Technical Summary

Problems solved by technology

Existing explosion protection mostly uses dry-type flame arresters, explosion vents, anti-tempering, explosion suppression devices, etc. These technologies can be applied to different protection requirements, but there is a risk of failure to block explosions due to overfire. In order to achieve effective physical resistance A valve-type device for shutting off transmission is not required

[0003] Existing valves are usually divided into manual or electric, but the closing time is long, and they do not have the explosion-proof effect in terms of explosion protection.

There is also a kind of anti-explosion valve for mining gas pipelines. In order to achieve a faster closing effect, the stroke of the valve core is reduced, which causes the problems of large resistance and serious pressure loss during daily transportation.

[0004] In addition, many explosion protection devices are on standby for a long time, which leads to the failure of the internal energy storage mechanism and cannot be replenished in time, causing the explosion protection devices to lose their due function and become decorations.

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