CN217785132U - Low-temperature stage automatic combustion device of cathode roasting furnace for aluminum - Google Patents
Low-temperature stage automatic combustion device of cathode roasting furnace for aluminum Download PDFInfo
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- CN217785132U CN217785132U CN202221987785.2U CN202221987785U CN217785132U CN 217785132 U CN217785132 U CN 217785132U CN 202221987785 U CN202221987785 U CN 202221987785U CN 217785132 U CN217785132 U CN 217785132U
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Abstract
The utility model relates to a low temperature stage automatic combustion device of cathode roasting furnace for aluminium belongs to aluminium and uses cathode carbon roasting technical field, has solved the low, safety control of current aluminium cathode carbon roasting furnace automation level and poor and binder etc. of migration period long, the big scheduling technical problem of migration volume. The solution is as follows: the automatic combustion device at the low-temperature stage of the cathode roasting furnace for aluminum comprises a control cabinet, a rectangular frame and a plurality of groups of gas burner devices; the control cabinet is fixedly arranged on the left side of the rectangular frame through a control cabinet bracket; the rectangular frame is formed by connecting two rectangular pipes which are parallel to each other and two connecting pieces which are arranged between the two rectangular pipes, wherein the two rectangular pipes are respectively a rectangular gas pipe and a rectangular air pipe; the gas inlet pipe is provided with a gas pressure reducing valve, a filter and a stop valve. Compared with the prior art, the utility model has the advantages of the security performance is high, the calcination yield is high, the migration phase of binder is short, the migration volume is few.
Description
Technical Field
The utility model belongs to the technical field of the calcination of aluminium cathode carbon, concretely relates to aluminium is with negative pole roasting furnace low temperature stage automatic combustion device.
Background
A combustion system commonly used in a domestic cathode carbon roasting furnace for aluminum is divided into two flame series, 12 sets of combustion devices and 72 natural gas burners, and is used for supplying heat and controlling temperature in two stages of medium-temperature heating and high-temperature burning, while the temperature in a low-temperature stage is completely preheated by the residual heat of a flame path in an upstream medium-temperature heating stage, and moisture is discharged. Due to the limited technical means, the migration amount of the binder cannot be effectively controlled, and the generation of 'empty heads' of the carbon product is inhibited, so that the design cannot meet the requirement of rapid temperature rise in the low-temperature stage of the roasted carbon product, and the binder has long migration period and large migration amount. Generally, the equipment level and the combustion control technology of the domestic cathode carbon roasting furnace for aluminum still have certain functional defects, the automation level is low, and the safety control and guarantee capability is poor.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's not enough, solve the current cathode carbon roasting furnace for aluminium automatic level low, safety control and guarantee ability poor and the technical problem such as the migration period of binder etc. is long, the migration volume is big, the utility model provides an aluminium is with cathode roasting furnace low temperature stage automatic combustion device.
The utility model discloses a following technical scheme realizes.
The utility model provides an automatic combustion device at a low temperature stage of a cathode roasting furnace for aluminum, which comprises a control cabinet, a rectangular frame and a plurality of groups of gas burner devices; the control cabinet is fixedly arranged on the left side of the rectangular frame through a control cabinet bracket, and a cooling air conditioner is arranged on the right side of the top of the control cabinet;
the left side and the right side of the bottom of the rectangular frame are respectively provided with a group of supporting legs, the rectangular frame is formed by connecting two rectangular pipes which are parallel to each other and two connecting pieces arranged between the two rectangular pipes, and the two rectangular pipes are respectively a rectangular gas pipe and a rectangular air pipe; the rectangular gas pipe and the rectangular air pipe are both sealing steel pipes;
the gas pipe inlet is connected with a gas supply system through a gas inlet pipe, a gas pressure reducing valve, a filter and a stop valve are mounted on the gas inlet pipe, a plurality of gas pipe outlets are formed in the top of the rectangular gas pipe, and the number of the gas pipe outlets is consistent with that of the gas burner devices; the side wall of one end of the rectangular air pipe is provided with an air pipe air inlet, the air pipe air inlet is connected with a high-pressure fan, and the top of the rectangular air pipe is provided with a plurality of air pipe air outlets which correspond to the gas pipe outlets one to one;
the gas burner device comprises a gas burner, a burner mounting seat, a manual butterfly valve, an electric adjusting butterfly valve, a combustion-supporting air connecting hose, a gas connecting hose, an electromagnetic valve, an air-fuel proportional valve, a ball valve and a plurality of connecting steel pipes;
the air outlet of the air pipe is sequentially connected with a manual butterfly valve and an electric adjusting butterfly valve through a connecting steel pipe, and the outlet of the electric adjusting butterfly valve is communicated with the air inlet of the gas burner through a combustion-supporting air connecting hose; the outlet of the gas pipe is sequentially connected with the ball valve, the electromagnetic valve and the air-fuel proportional valve through a connecting steel pipe, and the outlet of the air-fuel proportional valve is communicated with the gas inlet of the gas burner through a gas connecting hose; the outlet of the electric adjusting butterfly valve is communicated with the outlet of the air-fuel proportional valve through a pressure guide pipe;
the burner mounting base is arranged on the front side of the rectangular frame, and the gas burner is detachably arranged on the burner mounting base; the top end of the gas burner is provided with an ignition/detection electrode; a thermocouple is arranged on one side of the burner mounting seat, and a pressure transmitter is arranged on the side wall of the inner cavity of the rectangular gas pipe;
the top end of the front side wall of the control cabinet is provided with a touch screen, and an ignition switch, an alarm lamp and a flameout switch are sequentially arranged below the touch screen; the inner cavity of the control cabinet is provided with a PLC control device which is respectively electrically connected with a cooling air conditioner, a high-pressure fan, an electric adjusting butterfly valve, an electromagnetic valve, an air-fuel proportional valve, an ignition/detection electrode, a thermocouple, a pressure transmitter, a touch screen, an ignition switch, an alarm lamp and a flameout switch.
Further, an operation handle is arranged on the gas burner.
Further, the gas burner is an automatic burner integrating ignition and flameout.
Furthermore, the combustion-supporting air connecting hose and the fuel gas connecting hose are telescopic hoses.
The utility model discloses the beneficial effect who reaches is: the utility model changes the heat supply mode of the roasting furnace by selecting the gas burner device, makes up the insufficient heat supply of the carbon product in the low temperature stage, realizes the rapid temperature rise in the low temperature stage, shortens the migration period of the binder and reduces the migration amount; the combustion at the low-temperature stage is automatically ignited, the temperature is automatically adjusted, the gas is automatically turned off after flameout, the safety and the reliability of the roasting process are ensured, and the roasting yield is high; due to the low-temperature stage combustion roasting, most of flue gas tar can be burnt, and the deposition of tar in a flue is reduced; the gas burner selects the automatic burner integrating ignition and flameout, so that the phenomenon of flame off is not easy to occur, the abnormal flameout condition is less, and the fine cracks of the carbon product are further reduced.
Compared with the prior art, the utility model has the advantages of the security performance is high, the calcination yield is high, the migration phase of binder is short, the migration volume is few.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a front view of the present invention.
In the figure: 1, a control cabinet; 2, a rectangular frame; 3, a control cabinet bracket; 4, cooling and air conditioning; 5, supporting legs; 6, a rectangular tube; 6-1 of a rectangular gas pipe; 6-2 rectangular air pipes; 7, a connecting piece; 8, a gas inlet pipe; 9 gas pressure reducing valve; 10 a filter; 11 a stop valve; 12 gas pipe outlet; 13 high-pressure fan; 14 air outlet of air pipe; 15 gas burner; 16 burner mounting seats; 17 a manual butterfly valve; 18 electric regulating butterfly valve; 19, a combustion-supporting air connecting hose; 20 gas connection hose; 21 an electromagnetic valve; 22 air-fuel proportional valve; 23 ball valves; 24 connecting the steel pipes; 25, a pressure guide pipe; 26 an ignition/detection electrode; 27 thermocouple; 28 a pressure transmitter; 29 handle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 2, the automatic combustion device for the low-temperature stage of the cathode roasting furnace for aluminum comprises a control cabinet 1, a rectangular frame 2 and a plurality of groups of gas burner devices. Switch board 1 passes through 3 fixed mounting in the left side of rectangle frame 2 of switch board support, cooling air conditioner 4 is installed on 1 top right side of switch board, cooling air conditioner 4 mainly reduces the temperature of this device, avoids this device operating temperature too high.
The left side and the right side of the bottom of the rectangular frame 2 are respectively provided with a group of supporting legs 5, and the supporting legs 5 are used for maintaining the stability of the rectangular frame 2. Rectangular frame 2 is formed by two rectangular pipes 6 that are parallel to each other and two connecting pieces 7 established between two rectangular pipes 6 connecting, connecting piece 7 makes rectangular frame 2 more stable. The two rectangular pipes 6 are respectively a rectangular gas pipe 6-1 and a rectangular air pipe 6-2. The rectangular gas pipe 6-1 and the rectangular air pipe 6-2 are both sealed steel pipes. The rectangle gas pipe 6-1 one end lateral wall is equipped with the gas pipe import, the gas pipe import is connected with gas air supply system through gas intake pipe 8, install gas relief pressure valve 9, filter 10 and stop valve 11 in the gas intake pipe 8, gas relief pressure valve 9 and filter 10 can carry out the decompression to the natural gas and filter, reach automatic combustion device's operation requirement. The top of the rectangular gas pipe 6-1 is provided with a plurality of gas pipe outlets 12, and the number of the gas pipe outlets 12 is consistent with that of the gas burner devices. And an air pipe air inlet is formed in the side wall of one end of the rectangular air pipe 6-2 and is connected with a high-pressure fan 13, and the high-pressure fan 13 supplies air to the gas burner device forcibly and burns the air in an external mixing manner, so that flameout is avoided. The top of the rectangular air pipe 6-2 is provided with a plurality of air pipe air outlets 14 which are in one-to-one correspondence with the gas pipe outlets 12.
The gas burner device comprises a gas burner 15, a burner mounting seat 16, a manual butterfly valve 17, an electric adjusting butterfly valve 18, a combustion-supporting air connecting hose 19, a gas connecting hose 20, an electromagnetic valve 21, an air-fuel proportional valve 22, a ball valve 23 and a plurality of connecting steel pipes 24. The air pipe air outlet 14 is sequentially connected with a manual butterfly valve 17 and an electric adjusting butterfly valve 18 through a connecting steel pipe 24, and the electric adjusting butterfly valve 18 and the manual butterfly valve 17 can receive an air adjusting signal of the control cabinet 1 and adjust air supply quantity. The outlet of the electric adjusting butterfly valve 18 is communicated with the air inlet of the gas burner 15 through a combustion-supporting air connecting hose 19. The gas pipe outlet 12 is sequentially connected with a ball valve 23, an electromagnetic valve 21 and an air-fuel proportional valve 22 through a connecting steel pipe 24, and the outlet of the air-fuel proportional valve 22 is communicated with the gas inlet of the gas burner 15 through a gas connecting hose 20. The combustion-supporting air connecting hose 19 and the gas connecting hose 20 are telescopic hoses, so that the gas burner 15 can be taken and used conveniently. The air-fuel proportional valve 22 detects the air supply pressure to adjust the air supply amount. The electromagnetic valve 21 receives a flameout signal of the control cabinet 1, cuts off the gas or receives an ignition signal of the control cabinet 1, and opens the gas. The outlet of the electric adjusting butterfly valve 18 is communicated with the outlet of the air-fuel proportional valve 22 through a pressure guide pipe 25, and the pressure guide pipe 25 can adjust the outlet pressure of the air-fuel proportional valve 22.
The burner mounting base 16 is arranged on the front side of the rectangular frame 2, the gas burner 15 is detachably arranged on the burner mounting base 16, the gas burner 15 is provided with an operation handle 29, and when the device is placed at the top of the roasting furnace, the gas burner 15 can be taken out more conveniently by using the operation handle 29. The gas burner 15 is an automatic burner integrating ignition and flameout, so that the phenomenon of flame dropping is not easy to occur, and the abnormal flameout condition is less. And an ignition/detection electrode 26 is arranged at the top end of the gas burner 15. The burner mounting base 16 is provided with a thermocouple 27 on one side, the side wall of the inner cavity of the rectangular gas pipe 6-1 is provided with a pressure transmitter 28, when the pressure measured by the pressure transmitter 28 is reduced, the control cabinet 1 can cut off all the electromagnetic valves 21 in time, and an alarm lamp gives an alarm to prevent natural gas from backfiring.
The top end of the front side wall of the control cabinet 1 is provided with a touch screen, and an ignition switch, an alarm lamp and a flameout switch are sequentially arranged below the touch screen. The inner cavity of the control cabinet 1 is provided with a PLC control device which is respectively electrically connected with a cooling air conditioner 4, a high-pressure fan 13, an electric adjusting butterfly valve 18, an electromagnetic valve 21, an air-fuel proportional valve 22, an ignition/detection electrode 26, a thermocouple 27, a pressure transmitter 28, a touch screen, an ignition switch, an alarm lamp and a flameout switch.
The working process of the utility model is as follows:
when the device is used, the automatic combustion device at the low-temperature stage of the cathode roasting furnace for aluminum is placed at the top of the roasting furnace to be heated, the gas burner 15 and the thermocouple 27 respectively extend into the inner cavity of the roasting furnace, the PLC control device of the control cabinet 1 is turned on, and the PLC control device is electrically connected with the cooling air conditioner 4, the high-pressure fan 13, the electric adjusting butterfly valve 18, the electromagnetic valve 21, the air-fuel proportional valve 22, the ignition/detection electrode 26, the thermocouple 27, the pressure transmitter 28, the touch screen, the ignition switch, the alarm lamp and the flameout switch.
When the temperature of the flame path is lower than the target temperature, the control cabinet 1 outputs an air adjusting signal to control the air quantity to increase, the air-fuel proportional valve 22 also increases the gas supply quantity synchronously, the combustion intensity of the gas burner 15 is increased, the flue gas of the flame path is heated, and the temperature rise is realized. When the temperature of the flame path is higher than the target temperature, the control cabinet 1 outputs an air adjusting signal to control the air quantity to be reduced, the air-fuel proportional valve 22 also synchronously reduces the gas supply quantity, the combustion intensity of the gas burner 15 is weakened, and the temperature of the flue gas is reduced.
When the ignition/detection electrode 26 detects that the gas burner 15 abnormally extinguishes, the control cabinet 1 firstly automatically cuts off the gas supply by controlling the electromagnetic valve 21, and simultaneously enters an automatic ignition program, the control cabinet 1 controls the electric adjusting butterfly valve 18 and the electromagnetic valve 21 to be synchronously opened, and the ignition/detection electrode 26 discharges at high voltage to realize automatic ignition.
When the gas pressure is too low, the pressure measured by the pressure transmitter 28 is reduced, the control cabinet 1 cuts off all the electromagnetic valves 21 in time and gives an alarm to prevent the natural gas from backfiring.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and can be modified within the knowledge range of those skilled in the art, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The low-temperature stage automatic combustion device of the cathode roasting furnace for aluminum is characterized in that: comprises a control cabinet (1), a rectangular frame (2) and a plurality of groups of gas burner devices; the control cabinet (1) is fixedly arranged on the left side of the rectangular frame (2) through a control cabinet bracket (3), and a cooling air conditioner (4) is arranged on the right side of the top of the control cabinet (1);
the left side and the right side of the bottom of the rectangular frame (2) are respectively provided with a group of supporting legs (5), the rectangular frame (2) is formed by connecting two rectangular pipes (6) which are parallel to each other and two connecting pieces (7) which are arranged between the two rectangular pipes (6), and the two rectangular pipes (6) are respectively a rectangular gas pipe (6-1) and a rectangular air pipe (6-2); the rectangular gas pipe (6-1) and the rectangular air pipe (6-2) are both sealed steel pipes;
a gas pipe inlet is formed in the side wall of one end of the rectangular gas pipe (6-1), the gas pipe inlet is connected with a gas supply system through a gas inlet pipe (8), a gas pressure reducing valve (9), a filter (10) and a stop valve (11) are installed on the gas inlet pipe (8), a plurality of gas pipe outlets (12) are formed in the top of the rectangular gas pipe (6-1), and the number of the gas pipe outlets (12) is consistent with the number of the gas burner devices; an air pipe air inlet is formed in the side wall of one end of the rectangular air pipe (6-2), the air pipe air inlet is connected with a high-pressure fan (13), and a plurality of air pipe air outlets (14) which correspond to the gas pipe outlets (12) one by one are formed in the top of the rectangular air pipe (6-2);
the gas burner device comprises a gas burner (15), a burner mounting seat (16), a manual butterfly valve (17), an electric adjusting butterfly valve (18), a combustion-supporting air connecting hose (19), a gas connecting hose (20), an electromagnetic valve (21), an air-fuel proportional valve (22), a ball valve (23) and a plurality of connecting steel pipes (24);
the air outlet (14) of the air pipe is sequentially connected with a manual butterfly valve (17) and an electric adjusting butterfly valve (18) through a connecting steel pipe (24), and the outlet of the electric adjusting butterfly valve (18) is communicated with the air inlet of the gas burner (15) through a combustion-supporting air connecting hose (19); the outlet (12) of the gas pipe is sequentially connected with the ball valve (23), the electromagnetic valve (21) and the air-fuel proportional valve (22) through a connecting steel pipe (24), and the outlet of the air-fuel proportional valve (22) is communicated with the gas inlet of the gas burner (15) through a gas connecting hose (20); the outlet of the electric adjusting butterfly valve (18) is communicated with the outlet of the air-fuel proportional valve (22) through a pressure guide pipe (25);
the burner mounting seat (16) is arranged on the front side of the rectangular frame (2), and the gas burner (15) is detachably arranged on the burner mounting seat (16); an ignition/detection electrode (26) is arranged at the top end of the gas burner (15); a thermocouple (27) is arranged on one side of the burner mounting seat (16), and a pressure transmitter (28) is arranged on the side wall of the inner cavity of the rectangular gas pipe (6-1);
the top end of the front side wall of the control cabinet (1) is provided with a touch screen, and an ignition switch, an alarm lamp and a flameout switch are sequentially arranged below the touch screen; the inner cavity of the control cabinet (1) is provided with a PLC control device, and the PLC control device is respectively electrically connected with a cooling air conditioner (4), a high-pressure fan (13), an electric adjusting butterfly valve (18), an electromagnetic valve (21), an air-fuel proportional valve (22), an ignition/detection electrode (26), a thermocouple (27), a pressure transmitter (28), a touch screen, an ignition switch, an alarm lamp and a flameout switch.
2. The automatic combustion apparatus in a low temperature stage of a cathode baking furnace for aluminum according to claim 1, wherein: and an operation handle (29) is arranged on the gas burner (15).
3. The automatic combustion apparatus for a cathode baking furnace for aluminum in a low temperature stage according to claim 1, wherein: the gas burner (15) is an automatic burner integrating ignition and flameout.
4. The automatic combustion apparatus for a cathode baking furnace for aluminum in a low temperature stage according to claim 1, wherein: the combustion-supporting air connecting hose (19) and the fuel gas connecting hose (20) are telescopic hoses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221987785.2U CN217785132U (en) | 2022-07-29 | 2022-07-29 | Low-temperature stage automatic combustion device of cathode roasting furnace for aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221987785.2U CN217785132U (en) | 2022-07-29 | 2022-07-29 | Low-temperature stage automatic combustion device of cathode roasting furnace for aluminum |
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| Publication Number | Publication Date |
|---|---|
| CN217785132U true CN217785132U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221987785.2U Active CN217785132U (en) | 2022-07-29 | 2022-07-29 | Low-temperature stage automatic combustion device of cathode roasting furnace for aluminum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217785132U (en) |
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2022
- 2022-07-29 CN CN202221987785.2U patent/CN217785132U/en active Active
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