Superhigh temperature body of heater explosion proof door
Technical field
The present invention relates to a kind of explosion proof door, be specifically related to a kind of superhigh temperature body of heater explosion proof door, be applied to dust-laden, superhigh temperature, combustion gas body of heater that pressure oscillation is large is explosion-proof, and can within the unit interval, reduce High Temperature Gas and the dirt of discharging by bottom line.
Background technology
Explosion proof door is a kind of safety devices, has the function of function of self closing.Have on the market at present gravity type explosion proof door, but common configuration is coarse, easily there is stuck phenomenon in rotating shaft, has certain risk, is not suitable for protection and requires high occasion.
In some special industry, explosion proof door has the installation of explosion danger position, and the pressure that the blast that utilizes explosion proof door can discharge generation produces, to protect the safety of the person, equipment or parts.This type of explosion proof door ubiquity complex structure, the problem that manufacturing cost is high.
Summary of the invention
The object of the invention is to provide a kind of superhigh temperature body of heater explosion proof door, and security is good, and simple in structure.
To achieve these goals, the present invention adopts technical scheme as follows:
A superhigh temperature body of heater explosion proof door, comprises inside door and external door; Inside door comprises inside door cylindrical shell, inside door gland and a plurality of extension spring, and inside door cylindrical shell is arranged on high-temperature furnace body, and inside door gland matches with inside door cylindrical shell, and extension spring one end is arranged on inside door gland, and the extension spring other end is arranged on high-temperature furnace body; External door comprises external door cylindrical shell and external door gland, and external door cylindrical shell is arranged on high-temperature furnace body, the same outside that is located in inside door cylindrical shell of external door cylindrical shell, and have relief hole on external door cylindrical shell, external door gland and external door cylindrical shell removably connect and are integrated.
Further, inside door gland inwall is arranged on inside door cylinder body outer wall top with cone match.
Further, inside door gland is provided with a plurality of fore-sets, and fore-set height is less than the distance between external door gland and inside door gland.
Further, between external door gland and external door cylindrical shell, through securing member, explosion-proof template is installed.
Further, on the outer wall of external door cylindrical shell upper end, be fixed with external door connecting plate, between external door gland and external door connecting plate, by bolt and nut component, connect as one.
Further, between external door connecting plate and external door gland, be provided with sealed bolster plate.
Further, extension spring heat treatment step is as follows: utilize induction heating equipment of medium frequency to quench, utilize quenching oil cooling, hardening heat is 850-880 ℃, and the time is 3-5 hour; In induction heating equipment of medium frequency, carry out second annealing, one-level tempering: temperature is 350-400 ℃, tempering time is 2 hours; Second annealing: temperature is 500-530 ℃, tempering time is 2 hours.
Beneficial effect of the present invention:
Adopt said structure, while blasting, inside door gland can seal again by extension spring after by jack-up, and the relief hole of external door can be adjusted to appropriate device by pressure, and security is good, and simple in structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the selected embodiment of the present invention.
1, external door gland, 2, explosion-proof template, 3, securing member, 4, bolt and nut component, 5, sealed bolster plate, 6, external door connecting plate, 7, external door cylindrical shell, 8, inside door gland, 9, extension spring, 10,, 11, inside door cylindrical shell, 12, relief hole, 13, high-temperature furnace body, 14, fore-set, 15, interior relief hole.
The specific embodiment
For the ease of those skilled in the art, better understand the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further details, following is only the exemplary protection scope of the present invention that do not limit.
With reference to accompanying drawing 1, a kind of superhigh temperature body of heater explosion proof door, comprises inside door and external door; Inside door comprises inside door cylindrical shell 11, inside door gland 8 and a plurality of extension spring 9, and inside door cylindrical shell 11 is arranged on high-temperature furnace body 13, and inside door gland 8 matches with inside door cylindrical shell 11, and extension spring 9 one end are arranged on inside door gland 1, and extension spring 9 other ends are arranged on high-temperature furnace body 13; External door comprises external door cylindrical shell 7 and external door gland 1, and external door cylindrical shell 7 is arranged on high-temperature furnace body 13, the same outside that is located in inside door cylindrical shell 11 of external door cylindrical shell 7, and on external door cylindrical shell 7, have relief hole 12, external door gland 1 and external door cylindrical shell 7 removably connect and are integrated.
In the present embodiment, inside door gland 8 inwalls are arranged on inside door cylindrical shell 11 outer wall tops with cone match.
In the present embodiment, inside door gland 8 is provided with a plurality of fore-sets 14, and fore-set 14 is highly less than the distance between external door gland 1 and inside door gland 8, adopts this structure can guarantee the distance between external door gland 1 and inside door gland 8, to reach quick pressure releasing, explosion-proof object.
In the present embodiment, between external door gland 1 and external door cylindrical shell 7, through securing member 3, explosion-proof template 2 is installed.
In the present embodiment, on external door cylindrical shell 7 upper end outer walls, be fixed with external door connecting plate 6, between external door gland 1 and external door connecting plate 6, by bolt and nut component 4, connect as one.
In the present embodiment, between external door connecting plate 6 and external door gland 1, be provided with sealed bolster plate 5.
In the present embodiment, inside door cylindrical shell 8 cone section has interior relief hole 15, under the double acting of extension spring 9 and inside door gland 8 according to furnace pressure voluntarily regulating stove internal pressure, reach the object of effective pressure release.
In the present embodiment, in order to guarantee the pulling force of extension spring, extension spring 9 heat treatment steps are as follows: utilize induction heating equipment of medium frequency to quench, utilize quenching oil cooling, hardening heat is 850-880 ℃, and the time is 3-5 hour; In induction heating equipment of medium frequency, carry out second annealing, one-level tempering: temperature is 350-400 ℃, tempering time is 2 hours; Second annealing: temperature is 500-530 ℃, tempering time is 2 hours.
The course of work of the present invention is as follows: when body of heater internal pressure reaches design load, inside door gland 8 is by jack-up, furnace pressure is discharged by relief hole on external door cylindrical shell 7 12, furnace pressure reduces, under the deadweight of inside door gland 8 and the effect of extension spring 9, reply inside door sealing state, now in outer being discharged to, pressure is outdoors discharged by relief hole 12.When the pressure of discharging when relief hole 12 is less than the pressure that inside door discharges all the time, the spatial summation of pressure between inner-outer door, while reaching external door pressure design value, explosion-proof template 2 is opened, and reaches quick pressure releasing, explosion-proof object.
Below only described basic principle of the present invention and preferred embodiment, those skilled in the art can make many changes and improvements according to foregoing description, and these changes and improvements should belong to protection scope of the present invention.