CN2207204Y

CN2207204Y - Gas catalyzing fire resistance explosion-proof device

Info

Publication number: CN2207204Y
Application number: CN 94231875
Authority: CN
Inventors: 李勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-30
Filing date: 1994-12-30
Publication date: 1995-09-13
Anticipated expiration: 2004-12-30

Abstract

The utility model relates to a fuel gas catalyzing fire resistance explosion-proof device, which is composed of shells [1, 6], an axially symmetric fire resistance baffle plate [7], honeycomb ceramics fire resistance core containing rare noble metal catalyst, etc. The utility model has the advantages of high fire resistance efficiency, simple structure, easy disassembly and assembly, and easy manufacture. In addition, the utility model has catalytic action to fuel gas and can lead the molecular group of the fuel gas to be further refined and to sufficiently mix with air for complete combustion. So combustion efficiency is improved and harmful ingredient in combustion tail gas is reduced.

Description

Gas catalyzing fire resistance explosion-proof device

The utility model relates to the safety anti-explosive device in a kind of gas supply pipe net.

The various back-fire relief explosion-proof apparatus that prior art is made, the repeatedly bent road baffle means that adopt make repeatedly steering structure of gas-flow more, and more the fire-retardant core that it is inner adopts stainless steel band to be pressed into the corrugated coiling and forms.The cross section of ripple is triangular in shape, and the height of this triangle claims to extinguish diameter, and the length of ripple is called extinguishes length.To dissimilar fuel gas, it extinguishes diameter and extinguishes length and have nothing in common with each other.Such back-fire relief explosion-proof apparatus, not only structure is extremely complicated, and manufacture difficulty is big, cost is high, price is expensive, and back-fire relief efficient is not high yet, and function singleness, except that back-fire relief is explosion-proof, does not have other function.

The purpose of this utility model is exactly in order to overcome the deficiency of prior art, provide a kind of simple in structure, cost is low, back-fire relief efficient high and have pair combustion gas that the multi-functional formula combustion gas catalytic type back-fire relief explosion-proof apparatus of catalytic action is arranged.

The purpose of this utility model realizes by taking following technical measures.The ceramic honey comb fire-retardant core of packing in the procapsid of air-flow upstream end, this fire-retardant core is contained between two bracing frames.Along airflow direction axisymmetric back-fire relief baffle plate is set in back casing.Back casing and procapsid are tightly connected.If the gas pipeline nominal diameter is during less than 1 inch, the front and back housing can be with being threaded, if pipe diameter is during greater than 1 inch, then before and after between the housing and before and after all can adopt flange to be connected between housing and the pipeline.Wherein, the ceramic honey comb material of ceramic honey comb fire-retardant core is to be made through technologies such as grinding, moulding, sintering by the rhodium of trace, nickel, three kinds of thuliums of cobalt and ceramic material, become ceramic honey comb by special-purpose honeycomb die casting, its honeycomb aperture is same as the diameter that extinguishes of combustion gas, and its length is determined by the extinguishing length of combustion gas.

Compared with prior art, advantage of the present utility model is as follows:

1, be to make because of fire-retardant core by the ceramic honey comb material that contains rhodium, nickel, Co catalysts, after fire-retardant core is passed through in combustion gas, this rare earth element is just attached on the combustion gas micel, can make combustion gas micel structure refinement at the burning initial stage, can fully mix with airborne oxygen molecule, thereby combustion gas is fully burnt, improve combustion intensity, reduced the harmful components content in the tail gas, thereby reached energy-conservation and reduce the effect of polluting;

2. simple in structure, easily install, easily to make, cost is low, and price is low, be convenient to popularizing action; Simultaneously, overall structure adopts detachable structure, is convenient to maintenance is installed, and is adapted to the characteristics of domestic gas pipeline;

3. owing in spark arrester, be provided with axisymmetric back-fire relief baffle plate, can reduce flame movement speed greatly, protect fire-retardant core effectively, improve back-fire relief efficient.As two-layer fire-retardant core is set, when extinguishing diameter and getting 0.5mm, limit back-fire relief speed of the present utility model can reach 1800m/s above (the about 900m/s of limit back-fire relief speed of prior art).

Below, the utility model is described in further detail in conjunction with the accompanying drawings.

Fig. 1 is the utility model assembling section.Wherein 1, procapsid; 2, bracing frame; 3, ceramic honey comb fire-retardant core; 4, bracing frame 2; 5, sealing gasket; 6, back casing; 7, back-fire relief baffle plate; 8, back-fire relief mandrel.

Fig. 2 is the back-fire relief baffle plate ［ 7 ］ among Fig. 1.Wherein 9 is clamp nut, and 10 is baffle plate, and 11 is dowel.

Fig. 3 is the A-A profile among Fig. 2.

Gas-flow enters spark arrester from procapsid ［ 1 ］.The fire-retardant core ［ 3 ］ of in procapsid ［ 1 ］ chamber, packing into.Fire-retardant core ［ 3 ］ is contained between two bracing frames ［ 2,4 ］.Can adorn two ceramic honey comb fire-retardant cores ［ 3 ］ in the procapsid ［ 1 ］.In the end load onto back-fire relief baffle plate ［ 7 ］ behind a bracing frame.Back-fire relief baffle plate ［ 7 ］ and procapsid ［ 1 ］ are by being threaded.Back-fire relief baffle plate ［ 7 ］ is by clamp nut ［ 9 ］, baffle plate ［ 10 ］ and dowel ［ 11 ］ cast solid.Dowel ［ 11 ］ can be selected star or "+" font, is principle to reduce gas-flow resistance and sufficient intensity.Load onto back casing ［ 6 ］ at last, it is connected with available screw thread of procapsid ［ 1 ］ or flange, with sealing gasket ［ 5 ］ front and back housing ［ 1,6 ］ is sealed.In gas pipeline, produce tempering, and when changing detonation wave into by deflagration wave gradually, this ripple affacts at first on the back-fire relief baffle plate ［ 7 ］, that is affacts on the baffle plate ［ 10 ］, produce reflection, reduced flame propagation velocity.Flame front is walked around dowel ［ 11 ］ bend and is entered fire-retardant core ［ 3 ］ then.When flame is propagated in fire-retardant core ［ 3 ］, extinguish gradually.Because what pass through in the fire-retardant core ［ 3 ］ is than the flame of low velocity motion, has improved back-fire relief efficient effectively.

Claims

1, a kind of combustion gas catalytic type back-fire relief explosion-proof apparatus, it is to be made of installing ceramic honey comb fire-retardant core [3] in the housing [1,6], it is characterized in that this spark arrester is provided with symmetrical vertically back-fire relief baffle plate [7] and combustion gas is had the ceramic honey comb fire-retardant core [3] of catalytic action in housing.

2, back-fire relief explosion-proof apparatus according to claim 1 is characterized in that described ceramic honey comb fire-retardant core ［ 3 ］ is to make the ceramic material of catalyst and make by containing trace rhodium, nickel, cobalt yttrium.

3, according to claim 1 and 2 described back-fire relief explosion-proof apparatus, it is characterized in that the fray-out of flame diameter of ceramic honey comb fire-retardant core ［ 3 ］ is the honeycomb aperture of ceramic honey comb material, this aperture is 0.5MM.