CN111750377A - Positive pressure combustion type combustion furnace door structure - Google Patents
Positive pressure combustion type combustion furnace door structure Download PDFInfo
- Publication number
- CN111750377A CN111750377A CN202010635119.1A CN202010635119A CN111750377A CN 111750377 A CN111750377 A CN 111750377A CN 202010635119 A CN202010635119 A CN 202010635119A CN 111750377 A CN111750377 A CN 111750377A
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- China
- Prior art keywords
- furnace
- furnace door
- door frame
- positive pressure
- rectangular
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M7/00—Doors
- F23M7/02—Frames therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
- F27D1/1866—Door-frames
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a furnace door sealing structure of a positive pressure combustion furnace, which solves the sealing problem of the furnace door of the positive pressure combustion furnace and is suitable for frequently opening or closing the furnace door. The sealing structure comprises a furnace door, a rectangular furnace door frame and an air supply system, wherein the furnace door moves in parallel relative to the rectangular furnace door frame, a hollow air channel is arranged inside the rectangular furnace door frame, the air channel is connected with the air supply system, the pressure in the air channel is greater than the pressure in a hearth, and a circle of ventilation hole belt is arranged on one side of the rectangular furnace door frame relative to the furnace door. The invention has simple structure and good sealing property, is suitable for the positive pressure combustion furnace with the frequently opened or closed furnace door and has reliable operation.
Description
Technical Field
The invention relates to a furnace door structure of a positive pressure combustion type combustion furnace.
Background
The positive pressure combustion furnace has the advantages that the combustion speed of the combustion furnace is high, the temperature of the hearth is high, the combustion temperature is high, the temperature is controllable, energy can be effectively saved, the emission of harmful gas is reduced, the environment-friendly index is reached, and the positive pressure combustion furnace is limited by the sealing of a furnace door. The existing positive pressure combustion furnace door has two opening and closing modes, one is to move horizontally and open and close relatively, and the other is to hinge on one side. The fuel is mainly put in from the furnace top relative to the furnace door which is horizontally moved to open and close, the sealing of the furnace door is mainly water sealing, but the sealing form is only suitable for low-temperature combustion furnaces, most industrial furnaces with the combustion temperature higher than 1200 ℃ adopt the furnace door with one side hinged to open and close, the furnace door and the furnace door frame are tightly pressed by a heat-resistant pad and then locked, the heat-resistant pad needs to be frequently replaced, the sealing quality is not guaranteed, and the furnace door cannot be frequently opened and closed, and the like.
Disclosure of Invention
Based on the defects, the invention discloses a positive pressure combustion type combustion furnace door structure, which solves the sealing problem of the positive pressure combustion furnace doors of garbage incinerators, gas generators, cremators, industrial furnaces and the like, and is suitable for frequently opening or closing the doors.
The technical scheme adopted by the invention is as follows: a positive pressure combustion type combustion furnace door structure comprises a furnace door, a rectangular furnace door frame and an air supply system, wherein the furnace door moves in parallel relative to the rectangular furnace door frame, a hollow air channel is arranged inside the rectangular furnace door frame and is connected with the air supply system, the pressure in the air channel is larger than the pressure in a hearth, and a circle of ventilation hole belt is arranged on one side, opposite to the furnace door, of the rectangular furnace door frame.
The invention also has the following technical characteristics:
1. two ventilation hole belts are arranged on each side of the furnace door frame corresponding to the parallel moving direction of the furnace door, and the two ventilation hole belts are parallel to each other.
2. A raised partition is arranged between the two parallel vent holes, and a groove matched with the partition is arranged on the inner side of the furnace door.
3. The furnace door frames on the two sides in the direction of the parallel movement of the furnace door are respectively connected with an air supply system.
The invention has the following beneficial effects and advantages: the structure is simple, the sealing performance is good, the positive pressure combustion furnace is suitable for frequently opening or closing the furnace door, and the operation is reliable. The temperature of the hearth can be quickly improved, and simultaneously, along with the rise of the temperature of the hearth, the combustion speed is accelerated, and the emission of harmful gases is reduced, so that the requirements of energy conservation and environmental protection are met.
Drawings
Fig. 1 is a transverse section view of a door frame and door matching structure of a positive pressure combustion type combustion furnace.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a schematic structural view of a rectangular furnace door frame.
Fig. 4 is a schematic view a-a of fig. 3.
Fig. 5 is a transverse sectional view of a door frame of the oven at one side corresponding to a direction of parallel movement of the door.
Detailed Description
The invention is further illustrated by way of example in the accompanying drawings of the specification:
example 1
As shown in fig. 1-5, a positive pressure combustion type combustion furnace door structure comprises a door 1, a rectangular furnace door frame 2 and an air supply system, wherein the door 1 moves in parallel relative to the rectangular furnace door frame 2, the rectangular furnace door frame 2 is formed by four square pipes poured by heat-resistant cast iron in an end-to-end connection manner, a hollow air duct 4 is arranged inside the rectangular furnace door frame 2, high temperature cannot be generated under the action of cold air, the service life is prolonged, and the operation is guaranteed; a circle of vent hole belt 3 is arranged on one side of the rectangular furnace door frame 2, which is opposite to the furnace door 1; two ventilation hole belts 3 are arranged on each side of the furnace door frame corresponding to the furnace door 1 in the parallel moving direction, the two ventilation hole belts are parallel to each other, and the distance between the centers of the holes of the two ventilation hole belts 3 is 16 mm. A raised partition 6 is arranged between the two parallel vent hole belts 3, and a groove 7 which is matched with the partition is arranged on the inner side of the furnace door, and the width of the groove is 25mm, and the depth of the groove is 30 mm. The furnace door frames on the two sides in the direction of the parallel movement of the furnace door are respectively connected with an air supply system, and the pressure in the air duct 4 is greater than the pressure in the furnace chamber.
The principles of the present invention will be further explained with reference to the accompanying drawings in which: as shown in figures 1-2, because the furnace door moves up and down in parallel relative to the furnace door frame, the existing fixed seals such as silica gel pads, asbestos plates, metal hard sealing pads and the like can not achieve the sealing effect under the working condition of positive pressure of a furnace chamber, so that the invention adopts double-chamber air pressure sealing to seal the furnace door under the working condition of a positive pressure combustion furnace, P is P1Is the air pressure of the seal chamber, P2Is the pressure of the pressure-maintaining chamber, PFurnace with a heat exchangerIs the flue gas pressure in the furnace, PDoor with a door panelIs the pressure in the furnace door frame air chamber, as long as P is ensured1＞PFurnace with a heat exchangerThe sealing of the furnace door can be realized, P1The pressure loss of (2) is in two directions, one is towards the inside of the furnace, the other is towards the outside of the furnace, the pressure P in the furnace is1＞PFurnace with a heat exchangerThe smoke in the furnace can not leak out of the furnace, if the smoke in the furnace leaks out of the furnace, the smoke in the furnace must be bent for four times, and the structure increases the local pressure loss of the smoke in the furnace which is discharged out, thereby ensuring the positive pressure combustion of the combustion furnace. The invention utilizes the principle of pressure difference to realize air pressure sealing, namely the pressure in a furnace door frame air chamber is greater than the pressure in a hearth, PDoor with a door panel＞PFurnace with a heat exchangerThe air pressure sealing can be realized by utilizing the principle of pressure difference. The pressure in the furnace door frame gas chamber is approximate to the air supply pressure (neglecting the pressure loss along the air supply system), the air supply pressure is above 2000Pa, and the pressure of the combustion furnace hearth is between-100 Pa and +100 Pa.
Claims (4)
1. The utility model provides a malleation burning furnace gate structure that fires, includes furnace gate, rectangle stove door frame and air feed system, the furnace gate relative rectangle stove door frame parallel translation which characterized in that: the rectangular furnace door frame is internally provided with a hollow air channel, the air channel is connected with an air supply system, the pressure in the air channel is greater than the pressure in a hearth, and one side of the rectangular furnace door frame, which is opposite to a furnace door, is provided with a circle of ventilation hole belt.
2. The furnace door structure of a positive pressure combustion furnace as claimed in claim 1, wherein: two ventilation hole belts are arranged on each side of the furnace door frame corresponding to the parallel moving direction of the furnace door, and the two ventilation hole belts are parallel to each other.
3. The furnace door structure of a positive pressure combustion furnace as claimed in claim 2, wherein: a raised partition is arranged between the two parallel vent holes, and a groove matched with the partition is arranged on the inner side of the furnace door.
4. A furnace door structure for a positive pressure combustion type combustion furnace according to any one of claims 1 to 3, wherein: the furnace door frames on the two sides in the direction of the parallel movement of the furnace door are respectively connected with an air supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635119.1A CN111750377A (en) | 2020-07-03 | 2020-07-03 | Positive pressure combustion type combustion furnace door structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635119.1A CN111750377A (en) | 2020-07-03 | 2020-07-03 | Positive pressure combustion type combustion furnace door structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111750377A true CN111750377A (en) | 2020-10-09 |
Family
ID=72680403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010635119.1A Pending CN111750377A (en) | 2020-07-03 | 2020-07-03 | Positive pressure combustion type combustion furnace door structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111750377A (en) |
-
2020
- 2020-07-03 CN CN202010635119.1A patent/CN111750377A/en active Pending
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