CN111991730A - VOC explosion-proof flame arrester - Google Patents
VOC explosion-proof flame arrester Download PDFInfo
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- CN111991730A CN111991730A CN202010890426.4A CN202010890426A CN111991730A CN 111991730 A CN111991730 A CN 111991730A CN 202010890426 A CN202010890426 A CN 202010890426A CN 111991730 A CN111991730 A CN 111991730A
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- fire retardant
- crushable material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
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Abstract
The application is an explosion-proof spark arrester of VOC, generally is a syllogic structure, specifically includes: a crushable material section at both ends and a fire barrier section in the middle; the air hole is a through hole penetrating through the crushable material section and the fire retardant section; a fire retardant disc is arranged in a hole on the fire retardant section; the crushable material section is movably connected with the fire retardant section; the fire retardant disc is of a detachable multi-piece structure and is formed by overlapping a plurality of fire retardant pieces, fire extinguishing gaps are formed in the fire retardant pieces, and the fire extinguishing gaps of the fire retardant pieces are arranged in a staggered mode; the crushable material is formed by pressing particles with the particle size of 4-5mm, the core of the particles is graphite polystyrene foaming particles, and silicate cement and fly ash are coated outside the particles. The application creatively uses the crushable material to absorb the energy of explosion in the pipeline, and the crushable material is matched with the fire-retardant disc, so that the pipeline is better protected by depending on the performance of the material, and the crushable material is low in price and is the best fire-retardant pipeline for VOC (volatile organic compound) treatment and waste gas conveying.
Description
The technical field is as follows:
the application is dangerous waste gas body processing field, specifically is an explosion-proof back-fire relief pipeline of VOC of thermosetting, fire-retardant, no static material.
Background art:
the fire caused by inflammable gas has the following fire hazards according to the fire generation mode: (1) uncontrolled deflagrations, i.e. uncontrolled deflagrations, generally occur because flammable gases outside the container or apparatus are ignited. Localized flammable gas clouds may collect near the vent or breather valve of an oil reservoir, for example; if there is a source of fire, such as a lightning strike, a cigarette butt or an electrostatic spark, the gas may ignite causing a flame wave to enter the apparatus via the vessel outlet to initiate detonation. (2) Confined deflagration, which means that when a flammable mixture of gases in a conduit is ignited, the flame front will propagate along the conduit at subsonic speeds, is referred to as a confined deflagration. This situation may occur in scientific industrial plants, chemical plants and various industries; for example, many underground coal mines produce flammable or toxic methane gas that is often removed by pipeline transport using a blower to supply boiler heating. In the event of a problem with the boiler or the delivery system, the flammable gas within the pipe may ignite and flashback along the pipe, causing an explosion in the subsurface. (3) Detonation, which refers to the detonation of a flame along a conduit, after a distance, at a supersonic velocity, which generates a shock wave. This is often the case because rough pipe walls, curved obstructions, valves, and changes in pipe dimensions cause turbulence that accelerates the flame. The flame continues to accelerate along the pipe for a sufficient distance and an explosion may also occur.
In view of the above fire situations, in the prior art, in order to ensure the system safety, an emergency release valve is usually installed at a critical position, and when the system pressure or vacuum exceeds the set pressure of the valve, the pressure is released. When overpressure occurs, the forced valve core moves to release the seal between the valve seat and the valve core, so that steam/gas passes through the orifice plate of the valve to release pressure or vacuum. Once released, the valve reseals and remains sealed.
On the other hand, according to the fire situations, in the prior art, in order to ensure the system safety, an explosion-proof flame arrester is additionally arranged on the pipeline. Explosion-proof flame arresters are divided into explosion-type and detonation-type flame arresters, which rely primarily on structural features to cushion the explosion pressure to protect the pipeline. Due to the complex structure and the exponential curve increase of the explosion pressure along with the length and the diameter of the pipeline, the fire arrestors of the large-size pipelines are all 'day price', and are difficult to accept by many enterprises.
The invention content is as follows:
the purpose of the invention is as follows:
an object of the application is to provide a flame arrestor of the tunnel type with an innovative idea, which better and more economically protects the pipeline, relying on the properties of the special fragile material.
The technical scheme is as follows:
the application is an explosion-proof spark arrester of VOC, generally is a syllogic structure, specifically includes:
a crushable material section at both ends and a fire barrier section in the middle;
the air hole is a through hole penetrating through the crushable material section and the fire retardant section;
a fire retardant disc is arranged in a hole on the fire retardant section;
the crushable material section is movably connected with the fire retardant section;
the fire retardant disc is of a detachable multi-piece structure and is formed by overlapping a plurality of fire retardant pieces, fire extinguishing gaps are formed in the fire retardant pieces, and the fire extinguishing gaps of the fire retardant pieces are arranged in a staggered mode;
the crushable material is formed by pressing particles with the particle size of 4-5mm, the core of the particles is graphite polystyrene foaming particles, and silicate cement and fly ash are coated outside the particles.
The above-mentioned VOC explosion-proof flame arrestor, preferably: the VOC explosion-proof flame arrester is provided with a plurality of air holes in a honeycomb shape. Further: the air holes are uniformly distributed, and the number of the air holes is 4, 7 or 9.
The above-mentioned VOC explosion-proof flame arrestor, preferably: the fire retardant section is the cylinder with the crushable material section, and back-fire relief section diameter is less than crushable material section diameter, inside back-fire relief section embedding both sides crushable material section, two sections crushable material section seam crossing pass through the binder bonding.
The above-mentioned VOC explosion-proof flame arrestor, preferably: the fire retardant section is the cylinder with the crushable material section, and back-fire relief section diameter is greater than crushable material section diameter, crushable material section embedding back-fire relief in the recess of section both sides.
The above-mentioned VOC explosion-proof flame arrestor, preferably: the fire-retardant section is a honeycomb-shaped stainless steel disc with a plurality of air holes in the axial direction, and the fire-retardant disc is arranged in the air holes on the fire-retardant section.
The above-mentioned VOC explosion-proof flame arrestor, preferably: the particles of crushable material are treated to prevent static electricity.
The advantages and effects are as follows:
the application creatively uses crushable material to absorb the energy of explosion in the pipeline, releases pressure quickly, and cooperates with the fire retardant disc to rely on the material performance, better protect the pipeline, and the low price is the best fire retardant pipeline for VOC treatment and waste gas transportation.
The product has reasonable structure, does not occupy space, is easy to be modified or added on the prior system, and is suitable for popularization.
Description of the drawings:
FIG. 1 is a general block diagram of the present application, with arrows indicating exhaust gas flow direction;
FIG. 2 is a schematic view of the refractory segment of the present application embedded within a segment of crushable material;
FIG. 3 is a schematic view of the present application showing a refractory segment nested outside a segment of crushable material;
fig. 4 is a schematic representation of the construction of a firestop sheet of the present application.
The figure is marked with:
1 a segment of crushable material; 2, a fire retardant section; 3, air holes; 4 fire retardant disc.
The specific implementation mode is as follows:
the technical idea of the application is to provide an explosion-proof fire-retardant device arranged in a combustible waste gas pipeline, when conditions such as deflagration, detonation and the like occur in a pipeline, the device absorbs impact force of explosion through a crushable material, and quickly relieves pressure to replace the effect of a pressure relief valve in a conventional means; on the other hand, a flame retardant disk is arranged between the two sections of crushable material to prevent the flame from spreading.
The technical solution of the present application is illustrated in the following examples:
example 1
In this example, the device is a three-stage structure as a whole, and specifically includes:
The air hole 3 is a through hole penetrating through the crushable material section and the fire retardant section;
a fire retardant disc 4 is arranged in a hole on the fire retardant section;
the crushable material section is movably connected with the fire retardant section;
the fire retardant disc is of a detachable multi-piece structure and is formed by overlapping a plurality of fire retardant pieces, fire extinguishing gaps are formed in the fire retardant pieces, and the fire extinguishing gaps of the fire retardant pieces are arranged in a staggered mode; is convenient to disassemble, clean and maintain. The function of the fire barrier is to prevent combustion and diffusion within the pipe.
The crushable material is formed by pressing particles with the particle size of 4-5mm, the core of the particles is graphite polystyrene foaming particles, and silicate cement and fly ash are coated outside the particles.
In this case, the crushable material should meet the following specifications:
and the following antistatic and flame retardant indexes:
example 2
In this example, the following technical features are added on the basis of the embodiment 1:
the VOC explosion-proof flame arrester is provided with a plurality of air holes in a honeycomb shape. Further: the air holes are uniformly distributed, and the number of the air holes is 4, 7 or 9.
The fire retardant pipeline is divided into three sections: a crushable material section, a fire retardant disc, a crushable material section; the back-fire relief pipeline adopts the cellular mode of delivering gas, and cellular area of contact that can increase between gaseous and the crushable material, better absorption explosion kinetic energy enables the pressure release more even moreover, reduces and the release of the pressure of average all directions, reduces follow-up destruction.
Example 3
In this example, the following technical features are added on the basis of the embodiment 1:
the fire retardant section is the cylinder with the crushable material section, and back-fire relief section diameter is less than crushable material section diameter, inside back-fire relief section embedding both sides crushable material section, two sections crushable material section seam crossing pass through the binder bonding. The binder may be a marble glue or similar product that conceals the fire barrier section from the interior of the crushable material, providing a more integral appearance and easier installation or fitting into a pipe.
Example 4
In this example, another attachment form is described in example 3, in which the diameter of the fire retardant section is greater than the diameter of the sections of crushable material that are embedded in the grooves on either side of the fire retardant section. Different from embodiment 3, the finished product middle section has the outstanding cyclic annular that the section of hindering fires formed, and the back-fire relief section plays the effect of similar connector, connects two crushable material sections in the centre, and joint strength is more reliable than embodiment 3, also changes the dish that hinders in the section of hindering fires more easily.
Example 5
On the basis of other embodiments, the fire-retardant section is a honeycomb-shaped stainless steel disk with a plurality of air holes arranged in the axial direction, and the fire-retardant disk is arranged in the air holes. Stainless steel is an ideal material choice for the flame retardant section, and a detachable flame retardant disc is arranged in the honeycomb-shaped hole on the flame retardant section.
Example 6
On the basis of the above examples, the crushable material is subjected to an antistatic treatment.
Claims (7)
1. An explosion-proof spark arrester of VOC which characterized in that:
is a three-section structure, comprising:
a crushable material section at both ends and a fire barrier section in the middle;
the air hole is a through hole penetrating through the crushable material section and the fire retardant section;
a fire retardant disc is arranged in the through hole of the fire retardant section;
the crushable material section is connected with the fire retardant section;
the fire retardant plate is of a detachable multi-piece structure, the fire retardant plate is formed by overlapping a plurality of fire retardant pieces, fire retardant gaps are formed in the fire retardant pieces, and the fire retardant gaps of the fire retardant pieces are arranged in a staggered mode;
the crushable material is formed by pressing particles with the particle size of 4-5mm, the core of the particles is graphite polystyrene foaming particles, and silicate cement and fly ash are coated outside the particles.
2. A VOC explosion-proof flame arrestor as defined in claim 1, wherein: the VOC explosion-proof flame arrester is provided with a plurality of air holes and is in a honeycomb shape.
3. A VOC explosion-proof flame arrestor as defined in claim 2, wherein: the number of the air holes is 4, 7 or 9 which are uniformly distributed.
4. A VOC explosion-proof flame arrestor as defined in claim 1, wherein: the fire retardant section is the cylinder with the crushable material section, and back-fire relief section diameter is less than crushable material section diameter, inside back-fire relief section embedding both sides crushable material section, two sections crushable material section seam crossing pass through the binder bonding.
5. A VOC explosion-proof flame arrestor as defined in claim 1, wherein: the fire retardant section is the cylinder with the crushable material section, and back-fire relief section diameter is greater than crushable material section diameter, crushable material section embedding back-fire relief in the recess of section both sides.
6. A VOC explosion-proof flame arrestor as defined in claim 1, wherein: the fire-retardant section is a honeycomb-shaped stainless steel disc with a plurality of air holes in the axial direction, and the fire-retardant disc is arranged in the air holes on the fire-retardant section.
7. A VOC explosion-proof flame arrestor as defined in claim 1, wherein: the particles of crushable material are treated to prevent static electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010890426.4A CN111991730A (en) | 2020-08-29 | 2020-08-29 | VOC explosion-proof flame arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010890426.4A CN111991730A (en) | 2020-08-29 | 2020-08-29 | VOC explosion-proof flame arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111991730A true CN111991730A (en) | 2020-11-27 |
Family
ID=73466287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010890426.4A Pending CN111991730A (en) | 2020-08-29 | 2020-08-29 | VOC explosion-proof flame arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111991730A (en) |
-
2020
- 2020-08-29 CN CN202010890426.4A patent/CN111991730A/en active Pending
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