CN2243013Y

CN2243013Y - Anti-explosion device

Info

Publication number: CN2243013Y
Application number: CN 96231137
Authority: CN
Inventors: 龙步云
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-25
Filing date: 1996-01-25
Publication date: 1996-12-18
Anticipated expiration: 2006-01-25

Abstract

The utility model discloses a safe explosion-proof device. The utility model is composed of a valve seat (1), a reversed conical valve cover (3), a guide rod (2), a support ring (4) and combined type multi-stage springs (5), wherein, both ends of the guide rod (2) are respectively fixed with the valve seat (1) and the support ring (4); the valve cover (3) can move up and down along the guide rod (2); the combined type multi-stage springs (5) are uniformly laid on the support ring (4); the first-stage spring is directly pressed on the valve cover (3); the second-stage and the third-stage springs are respectively hung above the valve cover (3). A system not only can keep system seal but also can automatically release pressure. The utility model has the advantages of long service life, reliable work, simple maintenance and convenient manufacture and installation.

Description

A kind of flameproof apparatus

The utility model relates to a kind of explosion-proof system of requirement and flameproof apparatus on the equipment of being used for.

According to the knowledge of the applicant, at present for guaranteeing various the have system of explosion risk and the safety of equipment, be some flanges that have to be set connect holes on system or equipment mostly, on the hole with being carved with that cross recessed lead, copper sheet inlay in flange and a kind of bursting diaphragm that forms.When blasting, its explosion pressure or shock wave are with the bursting diaphragm avulsion, the explosion pressure that has in the system is discharged not to be destroyed with protection equipment, but after the blast, system wants out of service and rushes to repair immediately, and flange is unloaded, take out remaining bursting diaphragm, change new bursting diaphragm, system just can resume operation, and therefore changes inconvenient; Also find in practice because the cause for quality of negative pressure, vibrations or the fabrication and installation of system, be carved with the cross recessed bursting diaphragm and just occur in early days breaking, system's explosion time not as yet like this, the sliding gas of bursting diaphragm cutting place, cause operational dangerously on the contrary, cause system blast; In addition, this bursting diaphragm is to be carved with the cross recessed thin plate, is disposable, and blast is once changed once, so working life is also very short.

The purpose of this utility model provides a kind of safe and reliable flameproof apparatus, and it can make system when normal state is not blasted, and keeps system sealing and air tight, when blasting in system, does not need the halt system operation and can releasing pressure automatically.

For achieving the above object, flameproof apparatus of the present utility model is provided in a side of system and equipment gives on the flange short tube that stays, and this device is made up of valve seat, inverted cone valve gap, guide rod and combined multi-stage spring; Its valve seat is connected with flange on the equipment, and valve gap is withheld on valve seat; Lower end of the guide rod is fixed on the valve seat by the axle sleeve on the valve gap, and valve gap can move up and down along guide rod, and the guide rod upper end is also fixed with backing ring; The combined multi-stage spring is arranged on the garden of backing ring on week equably.

This combined type spring is 2～3 grades of telescopic cylindrical spiral springs, and the radical of every grade of spring has 4 at least, and wherein first order spring directly is pressed in above the valve gap, the sealing during with maintenance system normal condition; The second level, third level spring are suspended on the valve gap top successively with different height respectively, control the height that the explosion time valve gap rises automatically.

After adopting such structure, because system or equipment is when normal state, first order spring directly is pressed on the valve gap, can keep the sealing of system and air tight, so safe and reliable; Again owing to second level spring, third level spring are suspended on the valve gap top successively, valve gap adopts inverted cone again and can move along guide rod, when system blasts, valve gap compresses springs at different levels successively, valve gap rises and is opened along guide rod, explosion gas passes through valve gap inverted cone water conservancy diversion to diffusion all around, in the moment of air venting, valve gap under the effect of multistage spring with automatic shutdown seal, so it does not need system's just proper functioning continuously out of service, does not need repairing basically, and is simple in structure, long service life is made easy for installation.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the schematic representation of the utility model flameproof apparatus

Fig. 2 is an A portion enlarged view shown in Figure 1

Flameproof apparatus shown in Figure 1 is made up of valve seat 1, inverted cone valve gap 3, guide rod 2, backing ring 4 and combined multi-stage spring 5.Wherein valve seat 1 links to each other with flange on requiring explosion-proof system or equipment, valve gap 3 is withheld on valve seat 1, guide rod 2 lower ends are fixed on the valve seat 1 by the axle sleeve on the valve gap 3, valve gap 3 can move up and down along guide rod 2, the upper end of guide rod 2 is fixed on the backing ring 4: combined multi-stage spring 5 is 2～3 groups of telescopic garden cylindrical helical springs, and be arranged on equably on the circumference of backing ring 4, the radical of every grade of spring has 4 at least, wherein first order spring directly is pressed in above the valve gap 3, sealing during with maintenance system normal condition, the second level, third level spring is suspended on the valve gap top successively with different height respectively, controls the height that explosion time valve gap 3 rises automatically.

When system or equipment when normal state is not blasted, first order spring is directly pushed down valve gap 3, and is air tight with valve seat 1 sealing to keep valve gap 3; When system or equipment is blasted, size according to pressure, valve gap 3 rises along guide rod and compresses springs at different levels successively and be opened, the gas that explosion time can produce will be from the both sides of inverted cone valve gap 3 to external diffusion and pressure release, in the moment of air venting, valve gap 3 is automatic and valve seat 1 sealing under the reaction force of springs 5 at different levels, and does not need the operation of halt system or equipment.This device can be widely used in the storing of media such as the various coal gas that explosion risk arranged, biogas, propane and the safety anti-explosive of relevant therewith dust removal by ventilation, gas cleaning, gas recovery system and dusting apparatus.

Claims

1. one kind is used for explosion-proof system of requirement and the flameproof apparatus on the equipment, it is characterized in that: described flameproof apparatus is made up of valve seat (1), inverted cone valve gap (3), guide rod (2), backing ring (4) and combined multi-stage spring (5); The flange of band short tube is connected on its valve seat (1) and described system and the equipment; Valve gap (3) is withheld on valve seat (1); Guide rod (2) lower end is fixed on the valve seat (1) by the axle sleeve on the valve gap (3), and guide rod (2) upper end is fixing with backing ring (4); Garden at backing ring (4) also is provided with combined multi-stage spring (5) equably on week.

2. flameproof apparatus according to claim 1 is characterized in that: described combined multi-stage spring (5) is 2～3 grades of telescopic garden column type springs, and every grade of spring has 4 at least; Wherein first order spring directly is pressed in above the valve gap (3), and to keep the sealing of system under the normal condition, the second level, third level spring are suspended on valve gap (3) top successively with different height respectively, control the height of explosion time valve gap (3) breakdown automatically.