CN216409032U - Light multilayer sealed spring explosion vent - Google Patents
Light multilayer sealed spring explosion vent Download PDFInfo
- Publication number
- CN216409032U CN216409032U CN202122693565.0U CN202122693565U CN216409032U CN 216409032 U CN216409032 U CN 216409032U CN 202122693565 U CN202122693565 U CN 202122693565U CN 216409032 U CN216409032 U CN 216409032U
- Authority
- CN
- China
- Prior art keywords
- fire hole
- hole cavity
- spring
- plug
- plug cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a light multilayer sealed spring explosion-proof door, and belongs to the technical field of explosion-proof doors of oil-gas fired boilers. The device comprises a fire hole cavity, a plug cover, a connecting assembly and a plug cover return device; the fire hole cavity is arranged at the position of a boiler hearth, is positioned between the rear tube plate and the rear smoke box and is arranged on the boiler through the connecting assembly; one side of the connecting component is connected with the front side edge of the fire hole cavity, and the other side of the connecting component is connected with the blocking cover returning device; the rear part of the plug cover is arranged in the fire hole cavity, and the front part of the plug cover is abutted against a spring of the plug cover return device; the fire hole cavity is of a cavity structure, a smoke channel is arranged in the center of the fire hole cavity, a first sealing element is annularly arranged in the middle of the front side wall of the fire hole cavity, and a medium connecting pipe is connected to the fire hole cavity; and a second sealing element is also arranged on the outer wall surface of the fire hole cavity. The utility model has reasonable structure, ensures the tightness of the boiler during normal operation, ensures the normal operation of equipment, and solves the problem of smoke leakage of the spring type explosion-proof door for a long time.
Description
Technical Field
The utility model relates to a light multilayer sealed spring explosion-proof door, and belongs to the technical field of explosion-proof doors of oil-gas fired boilers.
Background
Under the prior art, the explosion-proof door of the oil-gas boiler is arranged at the outlet of a hearth of the oil-gas boiler, and is used for timely opening when the abnormal detonation of the boiler and the pressure of the hearth sharply rise to discharge smoke, and closing the explosion-proof door after the pressure in the boiler is reduced to return to a sealing state again. A spring explosion door additionally arranged at a hearth of a traditional oil and gas boiler is generally provided with a sealing surface, and concrete is adopted inside the oil and gas boiler to be integrally heavier.
For example, chinese patent publication No. CN103244722A discloses a pressure relief explosion-proof valve, which includes a flange fixedly connected to a device with explosion hazard, a sealing cover covered on the flange, and an explosion-proof door installed in the sealing cover and covered on the periphery of the central hole of the flange, wherein the explosion-proof door includes at least one guide rail connected between the sealing cover and the flange and perpendicular to the flange, an explosion-proof door body which is popped open to relieve pressure when the pressure in the device is too high, and a spring hermetically connecting the explosion-proof door body and the periphery of the central hole of the flange, and the explosion-proof door body is slidably connected to the guide rail and covered on the periphery of the central hole of the flange.
The explosion-proof door body is hermetically connected with the flange by the spring, when the pressure in the equipment is overlarge, the explosion-proof door body is quickly reset after being bounced open, so that air is prevented from entering, secondary explosion is avoided, the explosion-proof door body can be used repeatedly, and the explosion-proof door body can be tightly propped against the flange by the elasticity of the spring, so that the explosion-proof door body can be used no matter how the explosion-proof door body is arranged on the equipment, and the application range is wide; however, only one sealing surface is adopted, and the oil and gas boiler usually runs at high temperature under slight positive pressure, so that the leakage accident of smoke can be caused frequently, and the normal operation of equipment is easily influenced
Therefore, in order to solve the above-mentioned background problems, it is urgent to develop a light-weight multi-layer sealing type spring explosion vent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the background, and provides a light multilayer sealed spring explosion door which is reasonable in structure, ensures the tightness of a boiler in normal operation, ensures the normal operation of equipment, and solves the long-term smoke leakage problem of the spring explosion door.
The purpose of the utility model is realized as follows: a light multilayer sealed spring explosion vent comprises a fire hole cavity, a plug cover, a connecting assembly and a plug cover return device;
the fire hole cavity is arranged at the position of a boiler hearth, is positioned between the rear tube plate and the rear smoke box and is arranged on the boiler through the connecting assembly;
one side of the connecting component is connected with the front side edge of the fire hole cavity, and the other side of the connecting component is connected with the blocking cover returning device;
the rear part of the plug cover is arranged in the fire hole cavity, and the front part of the plug cover is abutted against a spring of the plug cover return device;
the fire hole cavity is of a cavity structure, a smoke channel is arranged in the center of the fire hole cavity, a first sealing piece is annularly arranged in the middle of the front side wall of the fire hole cavity, a medium connecting pipe is further connected to the fire hole cavity and used for connecting water or compressed air, and therefore the fire hole cavity is cooled;
and a second sealing element is also arranged on the outer wall surface of the fire hole cavity.
The plug cover comprises an inner plug, a connecting cylinder and a connecting cover plate;
the inner plug is arranged in a smoke channel at the center of the fire hole cavity, the connecting cylinder is connected to the outer side of the inner plug and coaxial with the inner plug, the front part of the connecting cylinder is inserted in the center of the connecting cover plate, and the connecting cover plate is sleeved at the center of a screw rod of the blocking cover returning device;
the rear side wall of the connecting cover plate is also provided with an annular steel plate;
and fire observation holes are formed in the center positions of the inner plug and the connecting cylinder.
The connecting assembly comprises a graphite asbestos gasket, a connecting flange, centrifugal glass wool and an aluminum silicate fiber felt;
the graphite asbestos gasket is arranged on the front side of the connecting flange, the centrifugal glass wool is arranged on the rear side of the connecting flange, and the aluminum silicate fiber felt is arranged between the centrifugal glass wool and two adjacent side walls of the fire hole cavity.
The plug cover returning device comprises a screw and a spring;
the screw rod is fixedly connected with a connecting flange of the connecting assembly;
the spring is sleeved on the screw, one end of the spring is fixed through a bolt at the front end of the screw, and the other end of the spring is abutted to the connecting cover plate of the plug cover.
The first sealing element and the second sealing element are both aluminum silicate fiber rope sealing elements.
Compared with the prior art, the utility model has the following advantages:
according to the light multilayer sealed spring explosion-proof door, the sealing elements on the fire hole cavities are pressed by the fire hole cavities on two sides to form a first sealing surface, the fire hole cavities are of stainless steel cavity structures, and the sealing elements are pressed by the connecting flange to form a second sealing surface; when the pressure of the boiler flue gas is abnormally increased, the pressure of the flue gas acting on the blocking cover overcomes the pressure of the spring, and the blocking cover presses the spring backwards; meanwhile, the first sealing surface and the second sealing surface are separated at the same time to expose the flue gas channel. The high-pressure and high-temperature flue gas is quickly discharged out of the boiler through the flue gas channel; after the spring returns, the first sealing surface and the second sealing surface simultaneously run, close and press to play a sealing role;
meanwhile, due to the fact that the double-sealing structure is matched with the cavity structure, tightness of the boiler in normal operation is guaranteed, normal operation of equipment is guaranteed, and the problems of smoke leakage and weight of the spring type explosion-proof door existing for a long time are solved.
Drawings
Fig. 1 is a schematic view of the general structure of a light multilayer sealed spring in an explosion-proof normal state according to the present invention.
FIG. 2 is an overall schematic view of the light multilayer sealed spring explosion-proof device of the present invention when the pressure of the boiler flue gas abnormally rises.
Wherein: 1. a rear tube plate; 2. a fire hole cavity; 3. blocking the cover; 4. a rear smoke box; 5. a connecting assembly; 6. a plug cover returning device; 7. a second seal member; 8. a first seal face; 9. a second seal face;
2.1, a flue gas channel; 2.2, a first sealing element; 2.3, medium connecting pipes;
3.1, medium inner plug; 3.2, connecting the cylinders; 3.3, connecting the cover plate; 3.4, a circular steel plate; 3.5, fire observation holes;
5.1, graphite asbestos gaskets; 5.2, connecting a flange; 5.3, centrifuging the glass wool; 5.4, aluminum silicate fiber felt;
6.1, a screw rod; 6.2 and a spring.
Detailed Description
The utility model is described below with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1-2, the light multilayer sealed spring explosion vent comprises a fire hole cavity 2, a plug cover 3, a connecting assembly 5 and a plug cover returning device 6;
the fire hole cavity 2 is arranged at a boiler hearth and is positioned between the rear tube plate 1 and the rear smoke box 4 and is arranged on the boiler through a connecting assembly 5;
one side of the connecting component 5 is connected with the front side edge of the fire hole cavity 2, and the other side of the connecting component is connected with the blocking cover returning device 6;
the rear part of the plug cover 3 is arranged in the fire hole cavity 2, and the front part of the plug cover is abutted against a spring 6.2 of the plug cover return device 6;
the fire hole cavity 2 is of a cavity structure, a smoke channel 2.1 is arranged in the center, a first sealing element 2.2 is annularly arranged in the middle of the front side wall of the fire hole cavity, and a medium connecting pipe 2.3 is further connected to the fire hole cavity 2.
In the present exemplary embodiment, the media connection 2.3 can be connected to water or compressed air in order to cool the fire-hole space 2.
And a second sealing piece 7 is also arranged on the outer wall surface of the fire hole cavity 2.
The plug cover 3 comprises an inner plug 3.1, a connecting cylinder 3.2 and a connecting cover plate 3.3;
the inner plug 3.1 is arranged in a smoke channel 2.1 in the center of the fire hole cavity 2 in a plugging manner, the connecting cylinder 3.2 is connected to the outer side of the inner plug 3.1 and is coaxial with the inner plug 3.1, the front part of the connecting cylinder 3.2 is inserted in the center of the connecting cover plate 3.3, and the connecting cover plate 3.3 is sleeved in the center of a screw 6.1 of the plugging cover returning device 6;
a circular steel plate 3.4 is also arranged on the rear side wall of the connecting cover plate 3.3;
the center positions of the inner plug 3.1 and the connecting cylinder 3.2 are provided with fire observation holes 3.5.
In this embodiment, the inner plug 3.1 may be configured as a stainless steel cavity structure, and is connected to a connecting pipe, and the inner plug 3.1 is cooled by water or compressed air.
The connecting assembly 5 comprises a graphite asbestos gasket 5.1, a connecting flange 5.2, centrifugal glass wool 5.3 and an aluminum silicate fiber felt 5.4;
the graphite asbestos gasket 5.1 is arranged on the front side of the connecting flange 5.2, the centrifugal glass wool 5.3 is arranged on the rear side of the connecting flange 5.2, and the aluminum silicate fiber felt 5.4 is arranged between the centrifugal glass wool 5.3 and two adjacent side walls of the fire hole cavity 2.
The plug cover returning device 6 comprises a screw 6.1 and a spring 6.2;
the screw 6.1 is fixedly connected with a connecting flange 5.2 of the connecting component 5;
the spring 6.2 is sleeved on the screw rod 6.1, one end of the spring is fixed by a bolt at the front end of the screw rod 6.1, and the other end of the spring is abutted against the connecting cover plate 3.3 of the plug cover 3.
The first seal 2.2 and the second seal 7 are each an aluminium silicate fibre rope seal.
In the embodiment, the light multilayer sealed type spring explosion-proof door of the utility model is characterized in that a first sealing surface 8 is formed by the first sealing element 2.2 which is pressed by the fire hole cavity 2 and the inner plug of the blanking cover 3 on two sides; the graphite asbestos gasket 5.1 is pressed by the steel plates of the connecting flanges 5.2 at the two sides to form a second sealing surface 9;
in this embodiment, as shown in fig. 1, when the boiler is in a normal working state, the pressure of flue gas in the boiler does not rise abnormally, and the blocking cover 3 presses two sealing surfaces by the acting force of the spring 6.2; meanwhile, the first sealing surface 8 is made of high-temperature-resistant and fire-resistant aluminum silicate fiber rope materials, so that radiation of high temperature of smoke on the connecting steel plate is effectively relieved, and a sealing effect is achieved; when the first sealing surface 8 fails, the second sealing surface 9 acts, and the sealing performance to smoke is improved through twice sealing.
In this embodiment, as shown in fig. 2, when the pressure of the boiler flue gas abnormally increases, the pressure of the flue gas acting on the blocking cover 3 overcomes the pressure of the spring 6.2 on the blocking cover 3, and the blocking cover 3 compresses the spring 6.2 and displaces, and meanwhile, the flue gas channel 2.1 is exposed; after the high-pressure and high-temperature flue gas is rapidly discharged out of the boiler through the flue gas channel 2.1, the pressure of the flue gas is reduced, the spring 6.2 presses the blocking cover 3 to return, and the first sealing surface 8 and the second sealing surface 9 are simultaneously pressed to play a role in sealing.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (4)
1. A light multilayer sealed type spring explosion vent is characterized in that: comprises a fire hole cavity (2), a plug cover (3), a connecting assembly (5) and a plug cover return device (6);
the fire hole cavity (2) is arranged at a boiler hearth, is positioned between the rear tube plate (1) and the rear smoke box (4), and is arranged on the boiler through a connecting assembly (5);
one side of the connecting component (5) is connected with the front side edge of the fire hole cavity (2), and the other side of the connecting component is connected with the plug cover returning device (6);
the rear part of the plug cover (3) is arranged in the fire hole cavity (2), and the front part of the plug cover is abutted against a spring (6.2) of the plug cover returning device (6);
the fire hole cavity (2) is of a cavity structure, a smoke channel (2.1) is arranged in the center, a first sealing element (2.2) is annularly arranged in the middle of the front side wall of the fire hole cavity, and a medium connecting pipe (2.3) is further connected to the fire hole cavity (2);
a second sealing element (7) is further arranged on the outer wall surface of the fire hole cavity (2);
the plug cover (3) comprises an inner plug (3.1), a connecting cylinder (3.2) and a connecting cover plate (3.3);
the inner plug (3.1) is arranged in a smoke channel (2.1) at the center of the fire hole cavity (2), the connecting cylinder (3.2) is connected to the outer side of the inner plug (3.1) and coaxial with the inner plug (3.1), the front part of the connecting cylinder (3.2) is inserted in the center of the connecting cover plate (3.3), and the connecting cover plate (3.3) is sleeved at the center of a screw (6.1) of the plug cover return device (6);
a circular steel plate (3.4) is also arranged on the rear side wall of the connecting cover plate (3.3);
the center positions of the inner plug (3.1) and the connecting cylinder (3.2) are provided with fire observation holes (3.5);
the inner plug (3.1) can be set to be a stainless steel cavity structure and is connected into a connecting pipe, and water or compressed air is received to cool the inner plug (3.1).
2. A lightweight, multilayer, hermetically sealed, spring explosion vent as set forth in claim 1, wherein: the connecting assembly (5) comprises a graphite asbestos gasket (5.1), a connecting flange (5.2), centrifugal glass wool (5.3) and an aluminum silicate fiber felt (5.4);
the graphite asbestos gasket (5.1) is arranged on the front side of the connecting flange (5.2), the centrifugal glass wool (5.3) is arranged on the rear side of the connecting flange (5.2), and the aluminum silicate fiber felt (5.4) is arranged between the centrifugal glass wool (5.3) and two adjacent side walls of the fire hole cavity (2).
3. A lightweight, multilayer, hermetically sealed, spring explosion vent as set forth in claim 1, wherein: the plug cover returning device (6) comprises a screw (6.1) and a spring (6.2);
the screw (6.1) is fixedly connected with a connecting flange (5.2) of the connecting component (5);
the spring (6.2) is sleeved on the screw rod (6.1), one end of the spring is fixed through a bolt at the front end of the screw rod (6.1), and the other end of the spring is abutted against the connecting cover plate (3.3) of the plug cover (3).
4. A lightweight, multilayer, hermetically sealed, spring explosion vent as set forth in claim 1, wherein: the first sealing element (2.2) and the second sealing element (7) are both aluminum silicate fiber rope sealing elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122693565.0U CN216409032U (en) | 2021-11-05 | 2021-11-05 | Light multilayer sealed spring explosion vent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122693565.0U CN216409032U (en) | 2021-11-05 | 2021-11-05 | Light multilayer sealed spring explosion vent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216409032U true CN216409032U (en) | 2022-04-29 |
Family
ID=81299354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122693565.0U Active CN216409032U (en) | 2021-11-05 | 2021-11-05 | Light multilayer sealed spring explosion vent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216409032U (en) |
-
2021
- 2021-11-05 CN CN202122693565.0U patent/CN216409032U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205279146U (en) | Removable boiler explosion vent | |
| CN216409032U (en) | Light multilayer sealed spring explosion vent | |
| CN115105768A (en) | Unsteady state detonation spark arrester | |
| CN207280212U (en) | A kind of furnace body automatic open-close type explosion proof door | |
| CN210831915U (en) | Explosion-proof door of waste heat boiler and waste heat boiler | |
| CN201507944U (en) | Explosion door device for boilers burning pulverized coal, oil or gas | |
| CN219128102U (en) | Flame arrester for natural gas pipeline | |
| CN110566924A (en) | Explosion-proof door of waste heat boiler and waste heat boiler | |
| CN210014655U (en) | Pressure relief door of tubular heating furnace | |
| CN215597296U (en) | Mechanical high-temperature explosion venting port | |
| CN211175418U (en) | Air valve with fireproof function | |
| CN202851155U (en) | Heat-insulation pipe and aeroengine | |
| CN212407619U (en) | Self-closing ball valve | |
| CN204573439U (en) | A kind of high temperature bushing type auto-compensation pipeline | |
| CN114980671A (en) | Explosion-proof heat dissipation control cabinet and equipment for hazardous gas environment | |
| CN106439286A (en) | Adapter of gas stove | |
| CN213628866U (en) | Furnace wall trompil seals tile | |
| CN218474814U (en) | Pipeline liquid detonation flame arrester | |
| CN208011758U (en) | A kind of torsional spring gravity type explosion proof door | |
| EP4299955A1 (en) | Valve | |
| CN220060686U (en) | Two-way motion ejector pin type explosion-proof valve | |
| CN111878609A (en) | Fireproof check valve for fume extractor | |
| CN110566922A (en) | Explosion-proof door of waste heat boiler and waste heat boiler | |
| US20240159319A1 (en) | Valve | |
| CN219558547U (en) | Pipeline explosion arrester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |