CN217972971U - Combustion-supporting air heating device of melting furnace - Google Patents
Combustion-supporting air heating device of melting furnace Download PDFInfo
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- CN217972971U CN217972971U CN202221586433.6U CN202221586433U CN217972971U CN 217972971 U CN217972971 U CN 217972971U CN 202221586433 U CN202221586433 U CN 202221586433U CN 217972971 U CN217972971 U CN 217972971U
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Abstract
The utility model belongs to the technical field of glass makes, concretely relates to combustion-supporting wind rising temperature device of melting furnace. It is characterized by comprising an induced draft pipe and a combustion-supporting fan; the induced draft pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially communicated; one end of the first pipe body is provided with an air inlet; one end of the third pipe body is provided with an air outlet; the first pipe body and the third pipe body are horizontally arranged; the second pipe body is vertically arranged; the air inlet is arranged at the bottom of the melting furnace, and the opening of the air inlet faces to the horizontal direction; the air outlet is connected with a combustion fan; the air inlet is higher than the air outlet. The beneficial effects of the utility model reside in that a combustion-supporting wind rising device of melting furnace sets up the air intake bottom the melting furnace, carries out recycle to the melting furnace waste heat to set up the filter screen at the air intake, filter outside debris, avoid causing the jam and the glass of regenerator checker to melt the defect, set up a plurality of combustion-supporting fans and artifical access hole door, the incident fault of reply takes place, makes things convenient for the later maintenance to overhaul.
Description
Technical Field
The utility model belongs to the technical field of glass makes, concretely relates to combustion-supporting wind rising temperature device of melting furnace.
Background
The glass manufacturing industry is a high energy consuming industry, and a large amount of energy is consumed in the glass production process. At present, four main fuels for manufacturing glass are fuel oil, natural gas, coal gas and petroleum coke, and the rest three fuels except the natural gas cause pollution to the environment to different degrees, and the natural gas is the main fuel source for glass production in recent years. However, the large use of natural gas in existing glass production processes also presents the problem of excessive carbon emissions. Therefore, in order to achieve the aim of energy conservation and emission reduction, the glass industry is imperative to reduce the unit consumption of natural gas reasonably.
At present, in the glass production process, a glass kiln is one of the most energy-consuming devices, and the energy is mainly supplied to the link of raw material melting. For the air-assisted glass kiln, the heat in the kiln is respectively from the combustion enthalpy of fuel, the self-carrying enthalpy of combustion-supporting air, the heat recovery enthalpy of a regenerator and the self-carrying enthalpy of raw materials. Because a large amount of combustion-supporting air required by the melting furnace mainly comes from natural air in a pit at the front end of the melting furnace, the air temperature is low (particularly in winter), so that the initial enthalpy brought into the melting furnace by the natural air is less, more fuel is consumed to ensure the heat required by melting the raw materials, and the necessary result is achieved, and the requirements of energy saving and carbon reduction are not met.
In addition, because combustion air draws the position and is nearer apart from kiln head and ventilation window, the raw materials dust that the dog-house was revealed and debris in the outdoor air also get into combustion-supporting air system more easily to aggravate the jam of regenerator checker, increase the glass and smelt the defect.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a melting furnace combustion-supporting air heating device is provided, which can not only improve the initial temperature of combustion-supporting air, but also reduce the introduction of sundries.
In order to solve the technical problem, the utility model discloses a technical scheme be: the provided combustion-supporting air heating device for the melting furnace is characterized by comprising an induced draft tube and a combustion-supporting fan; the induced draft pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially communicated; one end of the first pipe body is provided with an air inlet; an air outlet is formed in one end of the third pipe body; the first pipe body and the third pipe body are horizontally arranged; the second pipe body is vertically arranged; the air inlet is arranged at the bottom of the melting furnace, and the opening of the air inlet faces to the horizontal direction; the air outlet is connected with the combustion fan; the air inlet is higher than the air outlet.
Wherein, air intake department sets up expands wind gap and filter screen.
Wherein, the cross-section of induced duct is the rectangle.
The air expanding opening is a trapezoid table opening, and the air inlet is connected with the trapezoid table opening at the position of the section of the smallest table.
And reinforcing ribs are arranged on the outer surface of the air guide pipe body.
Wherein, the support frame is arranged at the lower part of the first pipe body.
The combustion-supporting fan comprises a main combustion-supporting fan and a standby combustion-supporting fan; the air outlet comprises a main air outlet and a standby air outlet, and the main air outlet and the standby air outlet are both arranged on the third pipe body; the main combustion-supporting fan is connected with the main air outlet, and the standby combustion-supporting fan is connected with the standby air outlet; the wind path of the main air outlet from the air inlet is smaller than the wind path of the standby air outlet from the air inlet.
The air outlet and the combustion fan are in flexible connection, and the flexible connection material is a flexible temperature-resistant material.
The sectional area of the induced draft pipe is equal to that of the air inlet of the fan, and the joint is in arc transition.
The melting furnace combustion-supporting air heating device further comprises an electric gate valve, the electric gate valve comprises a first electric gate valve and a second electric gate valve, and the first electric gate valve is arranged between the air outlet and the main combustion-supporting fan; the second electric gate valve is arranged on the induced air pipe between the main air outlet and the standby air outlet.
The melting furnace combustion-supporting air heating device further comprises an artificial access hole door, and the artificial access hole door is arranged at the outer end part of the third pipe body.
The melting furnace combustion-supporting air heating device further comprises a temperature sensor, and the temperature sensor is arranged in the third pipe body and close to the main air outlet.
The temperature sensor is in communication connection with a melting furnace DCS (Distributed Control System), and the DCS is a short name of a Distributed Control System (Distributed Control System).
And the joints of the second pipe body and the first pipe body adopt circular arc transition.
The beneficial effects of the utility model reside in that:
1. the air inlet is arranged at the bottom of the melting furnace to recycle the waste heat of the melting furnace, so that the initial temperature of combustion-supporting air is increased by about 30 ℃, the consumption of natural gas is correspondingly reduced by about 0.85%, and meanwhile, the emission of nitrogen oxides and carbon dioxide in flue gas is reduced, and the environment is improved;
2. the filter screen is arranged at the air inlet, so that leaked raw material dust and impurities in outdoor air are effectively blocked, the blockage of the checker of the regenerator is avoided, and the glass melting defect is reduced;
3. the standby combustion-supporting fan and the manual access hole door are arranged, so that the main combustion-supporting fan can be quickly switched when the main combustion-supporting fan breaks down, later-stage maintenance and repair are facilitated, and the working efficiency and the service life of the combustion-supporting air heating device of the melting furnace are improved.
Drawings
FIG. 1 is a schematic perspective view of a combustion-supporting air temperature-increasing device of a melting furnace according to the present invention;
FIG. 2 is a front view of the combustion-supporting air temperature increasing device of the melting furnace of the present invention;
FIG. 3 is a top view of the combustion-supporting air temperature increasing device of the melting furnace of the present invention;
FIG. 4 is a left side view of the combustion-supporting air temperature increasing device of the melting furnace of the present invention;
description of reference numerals: 1. a first pipe body; 2. a second tube body; 3. a third tube; 4. expanding an air opening; 5. a main combustion-supporting fan; 6. a standby combustion-supporting fan; 7. a first electric gate valve; 8. a second electric gate valve; 9. a support frame; 8. a manual manhole door; 11. a temperature sensor.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: the utility model provides a combustion-supporting wind rising temperature device of melting furnace sets up the air intake bottom the melting furnace, carries out recycle to the melting furnace waste heat to set up the filter screen at the air intake, filter outside debris, avoid causing the jam and the glass of regenerator checker to found the defect, there is certain difference in height in air outlet and air intake, sets up a plurality of combustion-supporting fans and artifical access hole door, and the reply accident takes place, makes things convenient for the later maintenance to overhaul.
Referring to fig. 1 to 4, the utility model provides a combustion-supporting air heating device for a melting furnace, which is characterized in that the device comprises an induced duct and a combustion-supporting fan; the induced draft pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially communicated; one end of the first pipe body is provided with an air inlet; one end of the third pipe body is provided with an air outlet; the first pipe body and the third pipe body are horizontally arranged; the second pipe body is vertically arranged; the air inlet is arranged at the bottom of the melting furnace, and the opening of the air inlet faces to the horizontal direction; the air outlet is connected with a combustion fan; the air inlet is higher than the air outlet.
According to the above description, the combustion-supporting air heating device for the melting furnace is provided, hot air enters from the bottom of the melting furnace, the temperature of the space at the bottom of the melting furnace is higher than that of the room temperature by more than 35 ℃, and the hot air enters the combustion-supporting fan through the induced duct, so that the hot air enters the combustion-supporting air system, the waste heat of the melting furnace is recycled, and the temperature of the combustion-supporting air is increased.
Furthermore, an air expansion opening and a filter screen are arranged at the air inlet.
As can be seen from the description, the air inlet is provided with the air expanding opening and the filter screen, so that the hot air can be guided to a greater degree and impurities can be prevented from entering the combustion-supporting air heating device of the melting furnace.
Further, the cross section of induced draft pipe is rectangle.
As can be seen from the above description, the cross-section of the induced draft tube is rectangular to facilitate the installation and connection of other subsequent components.
Furthermore, the air expanding opening is a trapezoid table opening, and the air inlet is connected with the trapezoid table opening at the section of the minimum table.
From the above description, the cross section of the induced draft tube is rectangular, so the air expanding opening is selected as a trapezoidal table opening, and after the air expanding opening is connected with the air inlet, the bottom space of the melting furnace can absorb more heat conveniently to increase the temperature of the combustion-supporting air.
Furthermore, the outer surface of the tube body of the induced draft tube is provided with a reinforcing rib.
According to the description, the reinforcing ribs are arranged on the outer surface of the body of the induced duct, so that the strength of the steel pipeline can be ensured, and the induced duct is not easy to deform and collapse.
Furthermore, a support frame is arranged on the lower portion of the first pipe body.
From the above description, the overhead structure that the support frame can better fix the first pipeline is arranged on the lower portion of the first pipe body, so that the first pipe body can be kept at a certain height for a long time, and the air outlet and the air inlet are kept at a certain height difference.
Further, the combustion-supporting fan comprises a main combustion-supporting fan and a standby combustion-supporting fan; the air outlet comprises a main air outlet and a standby air outlet, and the main air outlet and the standby air outlet are both arranged on the third pipe body; the main combustion-supporting fan is connected with the main air outlet, and the standby combustion-supporting fan is connected with the standby air outlet; the distance between the main air outlet and the air inlet is smaller than that between the standby air outlet and the air inlet.
According to the description, the main combustion-supporting fan and the standby combustion-supporting fan are arranged, so that the accident can be effectively prevented, when the main combustion-supporting fan needs to be maintained and overhauled or the power is insufficient, the standby combustion-supporting fan is adopted to replace the main combustion-supporting fan or work together with the main combustion-supporting fan, the working efficiency of the combustion-supporting air heating device of the melting furnace is improved, and the service life of the combustion-supporting air heating device of the melting furnace is prolonged.
Furthermore, the air outlet and the combustion fan are in flexible connection, and the flexible connection material is a flexible temperature-resistant material.
According to the description, the flexible connection can better connect the air outlet and the combustion-supporting fan, the relatively high-temperature hot air flows through the melting furnace combustion-supporting air heating device, and the service life of the connection part can be effectively prolonged by adopting the flexible temperature-resistant material.
Furthermore, the sectional area of the induced draft pipe is equal to that of the air inlet of the fan, and the joint is in arc transition.
From the above description, the cross-sectional area of the induced draft tube is equal to that of the air inlet of the fan, and the resistance of the circulating hot air can be effectively reduced by adopting circular arc transition at the joint.
Furthermore, the melting furnace combustion-supporting air heating device also comprises an electric gate valve, the electric gate valve comprises a first electric gate valve and a second electric gate valve, and the first electric gate valve is arranged between the air outlet and the main combustion-supporting fan; the second electric gate valve is arranged on the induced air pipe between the main air outlet and the standby air outlet.
According to the description, the arrangement of the two electric gate valves can be used for separating, switching and maintaining the two combustion-supporting fans respectively, and the melting furnace combustion-supporting air heating device can work normally when one combustion-supporting fan is damaged or overhauled.
Furthermore, the combustion-supporting air heating device of the melting furnace further comprises an artificial access hole door, and the artificial access hole door is arranged at the outer end part of the third pipe body.
From the above description, artifical access hole door sets up in the outer tip of third body and can be used to personnel to overhaul relevant equipment such as fan air intake spindle head, and daily the closing just opens when personnel overhaul the air intake.
Furthermore, the combustion-supporting air heating device of the melting furnace also comprises a temperature sensor, and the temperature sensor is arranged in the third pipe body and close to the main air outlet.
From the above description, it can be known that the temperature sensor is arranged in the third pipe body near the primary air outlet, and the temperature of the hot air at the air outlet can be detected in real time.
Further, the temperature sensor is in communication connection with the melting furnace DCS system.
As can be known from the description, the temperature sensor is in communication connection with the melting furnace DCS system, so that the working personnel can conveniently monitor the temperature of the hot air at the air outlet in real time.
Furthermore, the second body adopts circular arc transition with the junction of first body, second body and first body.
From the above description, it can be known that the hot air resistance can be effectively reduced by adopting arc transition at the joint, so that the service life of the pipe body is prolonged.
Application scenarios: the heating process of the combustion-supporting air adopted in the production process of the plate glass.
Example one
Referring to fig. 1 to 4, an embodiment of the present invention is a combustion-supporting air temperature increasing device for a melting furnace, including an induced duct and a combustion-supporting fan. The cross section of the induced duct is rectangular, is made of iron sheet with the wall thickness of 3mm, and has the specification of 28000mm in length, 2000mm in width and 1000mm in height. The induced draft pipe comprises a first pipe body 1, a second pipe body 2 and a third pipe body 3 which are sequentially communicated, the first pipe body 1 and the third pipe body 3 are horizontally arranged and distributed in an L shape on a horizontal projection plane, the second pipe body 2 is vertically arranged, an air inlet is formed in the bottom of the melting furnace, an opening faces the horizontal direction, an air outlet is connected with a combustion fan, and the air inlet is higher than the air outlet. The length of the first pipe body 1 is 14000mm (including the bending connection part), the length of the third pipe body 3 is 12000mm (including the bending connection part), and the length of the second pipe body 2 is 6500mm (including the bending connection part). The air inlet is provided with an air expanding opening 4 and a filter screen. The section of the induced draft pipe is rectangular. The air expanding opening 4 is a trapezoid table opening, the air inlet is connected with the trapezoid table opening at the position of the section of the smallest table, the height of the trapezoid table opening is 1030mm, and the largest step surface is a square with the side length of 3000 mm. One reinforcing rib is arranged on the outer surface of the air inducing pipe at an interval of 1000mm. The lower part of the first pipe body 1 is provided with a support frame 9. The combustion-supporting fan comprises a main combustion-supporting fan 5 and a standby combustion-supporting fan 6; the air outlet comprises a main air outlet and a standby air outlet, and the main air outlet and the standby air outlet are both arranged on the third pipe body 3; the main combustion-supporting fan 5 is connected with the main air outlet, and the standby combustion-supporting fan 6 is connected with the standby air outlet; the wind path of the main air outlet from the air inlet is smaller than the wind path of the standby air outlet from the air inlet. The air outlet and the combustion fan are in flexible connection, and the flexible connection material is a flexible temperature-resistant leather material. The sectional area of the induced air pipe is equal to that of the air inlet of the fan, the joint of the induced air pipe and the air inlet of the fan adopts circular arc transition, and the air inlet of the fan is a round hole with the diameter of 1600 mm. The melting furnace combustion-supporting air heating device also comprises an electric gate valve, the electric gate valve comprises a first electric gate valve 7 and a second electric gate valve 8, and the first electric gate valve 7 is arranged between the air outlet and the main combustion-supporting fan 5; the second electric gate valve 8 is arranged on the induced air pipe between the main air outlet and the standby air outlet. The combustion-supporting wind rising temperature device of melting furnace still includes artifical access hole door 10, and artifical access hole door 10 sets up in the outer tip of third body 3, and its specification is 600mm. The melting furnace combustion-supporting air heating device further comprises a temperature sensor 11, and the temperature sensor 11 is arranged in the third pipe body 3 and close to the main air outlet. The temperature sensor 11 is in communication connection with the melting furnace DCS system. The joints of the second pipe body 2 and the first pipe body 1 and the joints of the second pipe body 2 and the first pipe body 1 adopt circular arc transition.
The utility model discloses a working process does: hot air at the bottom of the melting furnace enters a combustion-supporting air heating device of the melting furnace through an air expanding opening at the outer end part of the first pipe body of the induced draft pipe, and a filter screen is arranged at the air expanding opening to filter impurities in the air. Hot air enters the third pipe body through the first pipe body and the second pipe body and enters the main combustion-supporting fan or the standby combustion-supporting fan through flexible connection under the control of the electric flashboard valve, so that the hot air enters the combustion-supporting air system.
The above embodiments are only embodiments of the present invention, not limiting the scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or directly or indirectly applied to the related technical fields, are included in the protection scope of the present invention.
Claims (10)
1. A combustion-supporting air temperature rising device of a melting furnace is characterized by comprising an induced draft pipe and a combustion-supporting fan; the induced draft pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially communicated; one end of the first pipe body is provided with an air inlet; one end of the third pipe body is provided with an air outlet; the first pipe body and the third pipe body are horizontally arranged; the second pipe body is vertically arranged; the air inlet is arranged at the bottom of the melting furnace, and the opening of the air inlet faces to the horizontal direction; the air outlet is connected with a combustion fan; the air inlet is higher than the air outlet.
2. The combustion-supporting air heating device for melting furnaces as claimed in claim 1, wherein an air diffuser and a filter screen are arranged at the air inlet.
3. The melting furnace combustion-supporting air heating device of claim 2, wherein the cross section of the induced draft tube is rectangular.
4. The combustion-supporting air heating device of the melting furnace as claimed in claim 3, wherein the air expanding opening is a trapezoidal table opening, and the air inlet is connected with the trapezoidal table opening at the position of the smallest table section.
5. The melting furnace combustion air heating device of claim 1, wherein the combustion fan comprises a primary combustion fan and a backup combustion fan; the air outlet comprises a main air outlet and a standby air outlet, and the main air outlet and the standby air outlet are both arranged on the third pipe body; the main combustion-supporting fan is connected with the main air outlet, and the standby combustion-supporting fan is connected with the standby air outlet; the wind path of the main air outlet from the air inlet is smaller than the wind path of the standby air outlet from the air inlet.
6. The melting furnace combustion-supporting air heating device of claim 1 or 5, wherein the air outlet and the combustion-supporting fan are in flexible connection, and the flexible connection material is a flexible temperature-resistant material.
7. The melting furnace combustion-supporting air heating device according to claim 5, further comprising an electric gate valve, wherein the electric gate valve comprises a first electric gate valve and a second electric gate valve, and the first electric gate valve is arranged between the air outlet and the main combustion-supporting fan; the second electric gate valve is arranged on the induced air pipe between the main air outlet and the standby air outlet.
8. The melting furnace combustion-supporting air heating device according to claim 1, further comprising a manual access door provided at an outer end of the third pipe body.
9. The melting furnace combustion-supporting air heating device according to claim 1, further comprising a temperature sensor disposed in the third pipe body near the primary air outlet.
10. The melting furnace combustion-supporting air heating device of claim 9, wherein the temperature sensor is connected to a DCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221586433.6U CN217972971U (en) | 2022-06-23 | 2022-06-23 | Combustion-supporting air heating device of melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221586433.6U CN217972971U (en) | 2022-06-23 | 2022-06-23 | Combustion-supporting air heating device of melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217972971U true CN217972971U (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221586433.6U Active CN217972971U (en) | 2022-06-23 | 2022-06-23 | Combustion-supporting air heating device of melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217972971U (en) |
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2022
- 2022-06-23 CN CN202221586433.6U patent/CN217972971U/en active Active
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