Automatic opening and closing pressure-relief anti-explosion safety valve for pipeline system

Abstract

The invention relates to an automatic opening and closing pressure-relief anti-explosion safety valve for a pipeline system. The automatic opening and closing pressure-relief anti-explosion safety valve is characterized in that three guide rod holes in circumferential uniform distribution are arranged on each of flanges arranged on the upper surface and the lower surface of a valve body seat, a spherical surface combination seal part is mounted in a seal part groove arranged on the flange on the upper surface of the valve body seat, a valve bonnet is in a hollow half-conisphere shape, three guide rod sleeves are fixedly welded on the periphery of the valve bonnet, the valve bonnet presses the spherical surface combination seal part arranged on the upper surface of the valve seat, the lower ends of three guide rods are assembled in the guide rod holes of the valve body seat, a support is fixed at the top ends of the three guide rods, an adjustable magnetic force disc is fixed at the center of the support, the lower end of a main guide rod is fixed in the middle of the valve bonnet, an auxiliary sucker is fixedly mounted after an upper end of the main guide rod penetrates out of a central hole of the adjustable magnetic force disc, three groups of buffer springs are mounted on the main guide rod, and dustproof protecting sleeves are arranged on the peripheries of auxiliary return springs mounted on the three guide rods. The automatic opening and closing pressure-relief anti-explosion safety valve for the pipeline system has the advantages of high pressure relief speed, good sealing performance, high temperature resistance, automatic opening and closing accuracy, reusability and avoidance of replacement.

Description

technical field [0001] The invention relates to a pressure stabilizing safety device in a pipeline system, in particular to an automatic opening and closing pressure relief and explosion-proof safety valve for the pipeline system. Background technique [0002] At present, the existing technology generally uses the principle of gravity and diaphragm type one-time blasting, and is widely used in pipeline systems, but there are many obvious defects in it: such as inaccurate detonation, inability to automatically reset, inaccurate reset, and poor sealing. Good, not resistant to high temperature, can not be adjusted accurately when the pressure changes, so that the safety of equipment and personal cannot be guaranteed; [0003] Although the technical solutions of utility model patent Nos. 03269972 and 2007200134887 can solve the above-mentioned existing problems, their structures still have the following technical defects: [0004] 1) The structural performance of the sealed dou...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing technology generally uses the principle of gravity and diaphragm type one-time blasting, and is widely used in pipeline systems, but there are many obvious defects in it: such as inaccurate detonation, inability to automatically reset, inaccurate reset, and poor sealing. Good, not resistant to high temperature, can not be adjusted accurately when the pressure changes, so that the safety of equipment and personal cannot be guaranteed;

[0004] 1) The structural performance of the sealed double-row groove and single-sealed groove is not good, and the sealing performance decreases when there is dust accumulation;

[0005] 2) The guide resistance is large, the guide rod sleeve is easy to accumulate dust, and the return position is not accurate;

[0006] 3) The bonnet adopts flat contact, so that most of the explosion venting force is intensified on the bonnet plane, which is not easy to guide the explosion venting amount, and has an impact on the explosion-proof effect and the service life of the bonnet

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