CN101059181A - Automatic-diversion closure safety valve - Google Patents

Abstract

The flow-type safety valve in the invention can be installed on the entrance end vertical tube of pressure container which is easy to happen explosion accident, the valve ball in its conical valve can be picked-up by the large flow increased suddenly in tubes at the instant of tube and tank explore and plug the upper outlet mouth of conical valve, so the high-temperature and high-pressure, poisonous and harmful, inflammable and explosive media in tube will not flow out after the accident happen. It just likes the 'safety fuse' in circuit and can cut off flow automatically under the 'overflowing' state, it is the safety attachment which can not be lacked before pressure container and pressure gage.

Description

Automatic-diversion closure safety valve

Technical field: a kind of flow type safety valve.Belong to the safety valve technical field.

Background technique: the elastic pressure gauge of installing on the pressurized container of chemical industry class enterprise and the fluid-transporting tubing, in case its weak sensing element (as the single-coil spring pipe) breaks and bursting accident takes place pressurized container self, all can cause pipe, jar interior High Temperature High Pressure, poisonous and harmful, inflammable and explosive medium to be gushed.Though the pipeline front end generally all is equipped with cutting-off valve, almost nobody can be approaching in the scene of the accident, thereby usually cause the pernicious casual saliva of accident condition.Existing all kinds of safety valves are all according to the pressure activated decompression mechanism action that exceeds standard, and its explosion leakage accident that oneself is taken place is powerless.The safety attachment that should or not lack before a kind of flow type safety valve of the automatic shutoff accident of flux signal pipeline of uprushing in can be according to pipe after the explosion leakage accident takes place should be all kinds of pressurized containers and pressure gauge.Its working principle is referring to accompanying drawing.

Content and description of drawings:

Narrow wealthy down conical valve body is housed on one 1. on 4. at vertical pipeline section, 3. its lower inlet end funnel-like rack has a valve ball that leaves standstill on 2..Valve ball diameter 3. is between conical valve body upper and lower bore 1..The flowing medium of normal flow rate can flow through in the conical valve body lower inlet end ring crack 1. and unlikely 3. valve ball be held up.The big flow of flow or accident takes place as soon as exceed standard, valve ball 3. promptly along with the increase of its two ends pressure reduction be accelerated shift onto conical valve body 1. the upper outlet place and in moment with the 4. shutoff automatically of accident pipeline, thereby the casual saliva of having stopped accident enlarges and provide condition for repairing.As soon as accident remove be valve ball 3. pressure at two ends return to normal value, valve ball 3. promptly fall back automatically the funnel-like rack 2. in, the pipeline inner fluid promptly recovers proper flow.

By valve ball material density and conical valve body upper and lower bore 1. 3. rationally chosen, this safety valve also can be used for the dispensing of limiting the quantity of to the various pipes fluid.It is monitoring the safe operation of pressure pipeline system in the mode of automatic-diversion closure when the big flow that exceeds standard takes place as " safety fuse cutout " in the circuit.

Claims (1)

1. A kind of flow type safety valve.The lower inlet end of its conical valve body have one when the flow that exceeds standard takes place the valve ball of shutoff valve port automatically.

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