CN214276529U - Sintering charge level gas injection device of sintering machine - Google Patents
Sintering charge level gas injection device of sintering machine Download PDFInfo
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- CN214276529U CN214276529U CN202022855479.0U CN202022855479U CN214276529U CN 214276529 U CN214276529 U CN 214276529U CN 202022855479 U CN202022855479 U CN 202022855479U CN 214276529 U CN214276529 U CN 214276529U
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Abstract
The utility model discloses a sintering charge level gas injection device of a sintering machine, wherein the sintering machine comprises a sintering machine ignition furnace and a gas injection section which are arranged at the front and the back, a sintering trolley is arranged on the sintering machine, a plurality of bellows are uniformly arranged below the gas injection section, and the gas injection device comprises a gas main pipe and a nitrogen pipeline; the gas main pipe is connected with a plurality of gas branch pipes, and each gas branch pipe is uniformly arranged above the gas spraying section along the length direction of the gas spraying section; each gas branch pipe is sequentially provided with a branch pipe flowmeter, a branch pipe pneumatic quick-cutting valve and a branch pipe electric regulating valve, and the end part of each gas branch pipe is connected with a group of spraying units; the nitrogen pipeline is connected with a plurality of nitrogen branch pipes which are in one-to-one correspondence with the gas branch pipes, and the tail end of each nitrogen branch pipe is connected with a branch pipe pneumatic quick-cutting valve on the corresponding gas branch pipe. The utility model discloses can realize evenly spouting of the gas of sintering charge level and add to and realize according to the particular case of sintering charge level that the accuracy of gas is spouted and add.
Description
Technical Field
The utility model belongs to the technical field of ferrous metallurgy equipment, especially, relate to a sintering machine sintering charge level gas spouts additional device.
Background
The gas fuel auxiliary sintering technology principle is as follows: in the existing air draft sintering process of adding solid fuel into a mixture, the bottom of a material layer is easy to over-fire, and the material layer on the upper part is quickly cooled, so that the strength of a sintered ore is influenced. A certain amount of combustible gas is sprayed on the surface of the sintering charge, and under the action of sintering negative pressure, the combustible gas is pumped into the sintering charge layer and is combusted at the upper part of a combustion layer in the charge layer to release heat, so that the thickness of the sintered combustion layer is widened; meanwhile, because the proportion of sintering solid fuel is reduced, the highest sintering temperature is reduced, and the method is more suitable for generating a composite calcium ferrite component with higher strength and reduction performance, thereby improving the quality of sintered ore; and simultaneously, the discharge amount of carbon dioxide, sulfur dioxide and nitrogen oxide in the sintering process is greatly reduced.
In the prior art, the fuel gas spraying mode for the sintering charge level is basically a fixed spraying mode and a quantitative spraying mode, the spraying mode is difficult to ensure that the fuel gas spraying is uniform, and adaptive partitioned accurate spraying can not be carried out according to the specific condition of the sintering charge level.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the above-mentioned background art, the utility model provides an additional device is spouted to sintering machine sintering charge level gas can realize evenly spouting of the gas of sintering charge level and add to and realize the accurate of gas and spout according to the particular case of sintering charge level and add.
The utility model provides a technical problem's technical scheme as follows:
the utility model relates to a sintering charge level gas spraying and adding device of a sintering machine, wherein the sintering machine comprises a sintering machine ignition furnace and a gas spraying and adding section which are arranged in the front and the back, and a sintering trolley is arranged on the sintering machine; a plurality of bellows are uniformly arranged below the gas injection section, and the utility model is characterized in that the gas injection device comprises a gas main pipe and a nitrogen pipeline; the gas main pipe is connected with a plurality of gas branch pipes, and each gas branch pipe is uniformly arranged above the gas spraying section along the length direction of the gas spraying section; each gas branch pipe is sequentially provided with a branch pipe flowmeter, a branch pipe pneumatic quick-cutting valve and a branch pipe electric regulating valve, and the end part of each gas branch pipe is connected with a group of spraying units; the nitrogen pipeline is connected with a plurality of nitrogen branch pipes which are in one-to-one correspondence with the gas branch pipes, and the tail end of each nitrogen branch pipe is connected with a branch pipe pneumatic quick-cutting valve on the corresponding gas branch pipe.
As the utility model discloses technical scheme's further improvement, every group spout and add the central line symmetry setting that the unit adds the section about the gas injection.
As the utility model discloses technical scheme's further improvement, the gas is responsible for and has set gradually and is responsible for manual trip valve, be responsible for the blind plate valve, be responsible for manual ball valve, be responsible for electronic fast cut valve, be responsible for electrical control valve and house steward's flowmeter.
As a further improvement of the technical solution of the present invention, the spraying unit includes a height adjusting tube, a driving device and a rotary nozzle, and the driving device can be a driving mechanism composed of a motor, a speed reducer and the like; the upper end of the height adjusting pipe is communicated with the gas branch pipe through a rotary joint, the bottom end of the height adjusting pipe is communicated with the rotary spray head, the pipe body of the height adjusting pipe is movably connected with the output end of the driving device, and the height adjusting pipe can rotate under the driving of the driving device.
As a further improvement of the technical scheme of the utility model, still be provided with metal connecting hose between rotary joint and the gas branch pipe.
As the utility model discloses technical scheme's further improvement, rotatory nozzle includes that a plurality of along circumference partition arrangement spouts with the pipe, and is preferred three, and every spouts with the middle part and the outer tip of pipe respectively towards being provided with the nozzle with one side.
As a further improvement of the technical scheme of the utility model, the device also comprises a plurality of flame detection devices, a plurality of hydrogen detection devices, a plurality of carbon monoxide detection devices, a plurality of waste gas temperature detection devices, a control device and a plurality of wind speed detection devices; the flame detection devices are uniformly arranged on the sintering trolley; the hydrogen detection device is arranged at each group of spraying units; the carbon monoxide detection devices are uniformly arranged along the length direction of the fuel gas spraying section; the waste gas temperature detection device is arranged at each air box; the wind speed detection devices are uniformly arranged above the gas spraying section; the device comprises a flame detection device, a hydrogen detection device, a carbon monoxide detection device, a waste gas temperature detection device, a wind speed detection device, a driving device, a main pipe blind plate valve, a main pipe electric quick-cutting valve, a main pipe electric regulating valve, a main pipe flowmeter, a branch pipe pneumatic quick-cutting valve and a branch pipe electric regulating valve which are respectively connected into a control device through lines.
Compared with the prior art, the sintering charge level fuel gas injection device of the sintering machine has reasonable structural arrangement, and can ensure the uniform injection of fuel gas of the whole fuel gas injection section and the uniform injection of fuel gas at each injection unit of the fuel gas injection section by uniformly arranging a plurality of groups of injection units at the fuel gas injection section and symmetrically arranging each group of injection units about the central line of the fuel gas injection section; the nitrogen pipeline is arranged to provide power for each branch pipe pneumatic quick-cutting valve, so that the safe and accurate spraying of the fuel gas of each spraying unit is ensured; through setting up flame detection device, hydrogen detection device, carbon monoxide detection device, exhaust gas temperature detection device, controlling means and wind speed detection device, can be according to the particular case of sintering charge level, through controller control the utility model provides a safety, the accurate of gas are realized to all kinds of valves and are spouted and add.
Drawings
The invention will be further explained with reference to the drawings and the detailed description below:
FIG. 1: the side-view structure schematic diagram of the utility model;
FIG. 2: the front view structure of the utility model is schematically shown;
FIG. 3: the utility model discloses a schematic overlooking structure;
FIG. 4: the utility model discloses in each detection device, valve and drive arrangement and the connection schematic diagram of controlling means;
in the figure: 1. the device comprises a sintering machine ignition furnace, 2, a fuel gas spraying section, 21, a spraying unit, 211, a height adjusting pipe, 212, a driving device, 213, a rotary spray head, 214, a rotary joint, 22, a flame detection device, 23, a hydrogen detection device, 24, a carbon monoxide detection device, 3, a sintering trolley, 4, a pipeline auxiliary platform, 43, a nitrogen pipeline, 431, a nitrogen branch pipe, 44, a fuel gas main pipe, 441, a main pipe manual cut-off valve, 442, a main pipe blind plate valve, 443, a main pipe manual valve, 444, a main pipe electric quick cut-off valve, 445, a main pipe electric adjusting valve, 446, a main pipe flowmeter, 45, a fuel gas branch pipe, 451, a branch pipe flowmeter, 452, a branch pipe pneumatic quick cut-off valve, 453, a branch pipe electric adjusting valve, 454, a metal connecting hose, 5, a platform stair, 6, a waste gas temperature detection device, 7, a control device and 8, a wind speed detection device.
Detailed Description
As shown in fig. 1 to 4, the sintering machine of the present invention comprises a sintering machine ignition furnace 1 and a gas injection section 2 arranged in front and at back, wherein the sintering machine is provided with a sintering pallet 3, the sintering pallet 3 is provided with sintering ore, and the sintering machine ignition furnace 1 operates to the gas injection section 2 and performs sintering; a plurality of air boxes 9 are uniformly arranged below the gas injection section 2, the gas injection device comprises a gas main pipe 44 and a nitrogen pipeline 43, and the gas main pipe 44 and the nitrogen pipeline 43 are arranged together; the gas main pipe 44 is connected with a plurality of gas branch pipes 45, and each gas branch pipe 45 is respectively and uniformly arranged above the gas spraying section 2 along the length direction of the gas spraying section 2 so as to ensure that the gas can be uniformly sprayed to the gas spraying section 2; each gas branch pipe 45 is sequentially provided with a branch pipe flowmeter 451, a branch pipe pneumatic quick-switching valve 452 and a branch pipe electric regulating valve 453, which are respectively used for metering the gas flow of the gas branch pipe 45, the quick on-off of the gas branch pipe and the regulation of the gas amount in the gas branch pipe, the end part of the branch pipe is connected with a group of spraying units 21, and the spraying units 21 are used for uniformly spraying gas to a sintering charge surface; the nitrogen pipeline 43 is connected with a plurality of nitrogen branch pipes 431 which are in one-to-one correspondence with the gas branch pipes 45, and the tail end of each nitrogen branch pipe 431 is connected with a branch pipe pneumatic quick-switching valve 452 on the corresponding gas branch pipe 45 and used for providing power for the branch pipe pneumatic quick-switching valve 452. During the application, the gas is responsible for 44 to each gas branch pipe 45 evenly distributed gas from the gas, then adds unit 21 through respectively spouting and evenly spouts to the sintering charge level with, the utility model discloses a this kind of arrangement can ensure that the gas spouts the even of section 2 with at whole gas and spouts with, ensures simultaneously that spout the even of adding unit department with every and spout with.
In the present embodiment, in order to make the gas uniformly injected at each group of injection units 21 on the gas injection section 2, each group of injection units 21 is symmetrically arranged about the center line of the gas injection section 2.
Further, the spraying unit 21 includes a height adjusting pipe 211, a driving device 212, and a rotary nozzle 213; the upper end of the height adjusting pipe 211 is communicated with the gas branch pipe 45 through a rotary joint 214, the bottom end of the height adjusting pipe is communicated with the rotary spray head 213, the pipe body of the height adjusting pipe 211 is movably connected with the output end of the driving device 212, and the height adjusting pipe 211 can rotate under the driving of the driving device 212. In this embodiment, the length of the height adjustment pipe 211 is set according to the spraying effect to be achieved by the rotary nozzle 213, and the driving device 212 is a driving mechanism composed of a motor, a speed reducer, and the like. In this embodiment, the rotary nozzle 213 may include three spraying pipes equally distributed along the circumference, and the middle and the outer end of each spraying pipe are respectively provided with nozzles facing the same side, so as to achieve uniform concentration of the gas sprayed in the sintered material surface area in the case of the gas spraying section 2.
Furthermore, in this embodiment, a metal connection hose 454 is further disposed between the rotary joint 214 and the gas branch pipe 45, so that the rotary joint 214 can have a certain floating range, and the service life of the rotary joint is ensured.
In this embodiment, the main pipe 44 is provided with a main pipe manual cut-off valve 441, a main pipe blind valve 442, a main pipe manual ball valve 443, a main pipe electric quick cut-off valve 444, a main pipe electric regulating valve 445 and a main pipe flow meter 446 in sequence, and is used for controlling and regulating the main pipe 44.
In this embodiment, in order to achieve accurate gas injection according to the specific sintering conditions in the gas injection section 2, the sintering charge level gas injection device of the sintering machine further includes a plurality of flame detection devices 22, a plurality of hydrogen detection devices 23, a plurality of carbon monoxide detection devices 24, a plurality of exhaust gas temperature detection devices 6, a control device 7 and a plurality of wind speed detection devices 8; the flame detection devices 22 are uniformly arranged on the sintering trolley 3; the hydrogen detection device 23 is arranged at each group of spraying units 21; the carbon monoxide detection devices 24 are uniformly arranged along the length direction of the fuel gas spraying section 2; the exhaust gas temperature detection device 6 is arranged at each air box 9; the wind speed detection devices 8 are uniformly arranged above the gas injection section 2; the flame detection device 22, the hydrogen detection device 23, the carbon monoxide detection device 24, the exhaust gas temperature detection device 6, the wind speed detection device 8, the driving device 212, the main pipe blind plate valve 42, the main pipe electric quick-cutting valve 444, the main pipe electric regulating valve 445, the main pipe flow meter 446, the branch pipe flow meter 451, the branch pipe pneumatic quick-cutting valve 452 and the branch pipe electric regulating valve 453 are respectively connected to the control device 7 through lines, and the control device 7 can be equipment such as an industrial personal computer. In this embodiment, the control device 7 receives feedback information from the total flow meter, the branch flow meter, the flame detection device, the hydrogen detection device, the carbon monoxide detection device, the exhaust gas temperature detection device, the wind speed detection device, and the like to obtain sintering conditions of each region of the gas injection section 2, and then the control device 7 controls various valves and the like to perform accurate gas injection.
The following description is made of a specific example of the present invention applied to a certain steel sintering machine:
as shown in fig. 1 to 4, a sintering charge level gas injection device of a sintering machine is provided with a sintering trolley 3 in the sintering machine, the sintering trolley 3 is used for placing sintering ore, the sintering machine comprises a sintering machine ignition furnace 1 and a gas injection section 2 which are arranged in front and back, during sintering operation, the sintering trolley 3 runs to the gas injection section 2 through the sintering machine ignition furnace 1 and carries out sintering, 8 groups of air boxes 9 are uniformly arranged below the gas injection section 2, the numbers of the air boxes are respectively 6# -13#, each group of air boxes 9 are uniformly arranged on the north and south side (or the front and back sides, and only refer to the position relation) and are respectively connected with a corresponding sintering exhaust flue; the sintering charge level gas injection device of the sintering machine further comprises a gas main pipe 44 and a nitrogen pipeline 43, wherein the gas main pipe 44 is arranged on the pipeline auxiliary platform and is used for conveying injected gas; the gas main pipe 44 is connected with 13 gas branch pipes 45, each gas branch pipe 45 is respectively and uniformly arranged above the gas spraying section 2 along the length direction of the gas spraying section 2, each gas branch pipe 45 is sequentially provided with a branch pipe flowmeter 451, a branch pipe pneumatic quick-cutting valve 452 and a branch pipe electric regulating valve 453, which are used for realizing the flow control of a single spraying unit 21, the end parts of the gas branch pipes are connected with a group of spraying units 21, and each group of spraying units 21 is provided with two spraying units 21 and is symmetrically arranged about the central line of the gas spraying section 2; 13 groups of spraying units 21 arranged in the whole fuel gas spraying section 2 are divided into front, middle and rear groups according to the advancing direction of the sintering trolley, the front group is a 1 st-3 th spraying unit and corresponds to the positions of 6# and 7# sintering air boxes, the middle group is a 4 th-8 th spraying unit and corresponds to the positions of 8#, 9# and 10# sintering air boxes, and the rear group is a 9 th-13 th spraying unit and corresponds to the positions of 11#, 12# and 13# sintering air boxes; in this example, the injection gas is introduced from the main gas pipe 44 through the pipeline auxiliary platform 4, and then is supplied to the corresponding injection unit 21 through each gas branch pipe 45, and the main gas pipe 44 is sequentially provided with a main pipe manual cut-off valve 441, a main pipe blind plate valve 442, a main pipe manual ball valve 443, a main pipe electric quick cut-off valve 444, a main pipe electric regulating valve 445, a main pipe flow meter 446 and the like, and is used for controlling the whole injection flow rate by remotely regulating the flow rate of the main gas pipe 44, manually controlling the site and the like. In this example, the nitrogen pipeline 43 is disposed together with the gas main pipe 44, and a plurality of nitrogen branch pipes 431 corresponding to the gas branch pipes 45 one by one are connected to the nitrogen pipeline, and the end of each nitrogen branch pipe 431 is connected to a branch pipe pneumatic quick-cutting valve 452 on the corresponding gas branch pipe 45, and is used for providing power to the branch pipe pneumatic quick-cutting valve 452.
In this example, the spraying unit 21 includes a height adjusting tube 211, a driving device 212 and a rotary nozzle 213, and the driving device 212 is a driving mechanism formed by a motor, a speed reducer and other devices; the upper end of the height adjusting pipe 211 is communicated with the gas branch pipe 45 through a rotary joint 214, the bottom end of the height adjusting pipe is communicated with the rotary spray head 213, the pipe body of the height adjusting pipe 211 is movably connected with the output end of the driving device 212, and the height adjusting pipe 211 can rotate under the driving of the driving device 212. The rotary spray head 213 comprises three spraying pipes which are arranged at equal intervals along the circumference, and the middle part and the outer end part of each spraying pipe are respectively provided with a spray nozzle facing the same side, so that the concentration of the gas sprayed in the sintered material surface area in the box body of the gas spraying section 2 is uniform. In this case, a metal connection hose 454 is also provided between the swivel joint 214 and the gas branch pipe 45, so that the swivel joint 214 can have a certain floating range, ensuring its service life.
In this embodiment, in order to facilitate the automatic remote control of the sintering charge level gas injection device of the sintering machine and the accurate injection of the gas, the sintering charge level gas injection device of the sintering machine further comprises a plurality of flame detection devices 22, a plurality of hydrogen detection devices 23, a plurality of carbon monoxide detection devices 24, a plurality of exhaust gas temperature detection devices 6, a control device 7 and a plurality of wind speed detection devices 8. The flame detection devices 22 are uniformly arranged on the sintering trolley 3; the hydrogen detection device 23 is arranged at each group of spraying units 21; the carbon monoxide detection devices 24 are uniformly arranged along the length direction of the fuel gas spraying section 2; the exhaust gas temperature detection device 6 is arranged at each air box 9; the wind speed detection device 8 is respectively arranged at the proper positions of the wind box 9 above the box bodies of the 7 th spraying unit 21 of the front group, the 10 th spraying unit of the middle group and the 13 th spraying unit 21 of the rear group and corresponding to the spraying units 21.
In this example, the flame detection device 22, the hydrogen detection device 23, the carbon monoxide detection device 24, the exhaust gas temperature detection device 6, the wind speed detection device 8, the drive device 212, the main pipe blind plate valve 42, the main pipe electric quick-cut valve 444, the main pipe electric control valve 445, the main pipe flow meter 446, the branch pipe flow meter 451, the branch pipe pneumatic quick-cut valve 452, and the branch pipe electric control valve 453 are connected to the control device 7 through lines, the control device 7 can be an industrial computer or other equipment, a corresponding control calculation unit is preset in the control device 7, the control device 7 is used for receiving detection value information fed back by the total flow meter, the branch flow meter, the flame detection device, the hydrogen detection device, the carbon monoxide detection device, the waste gas temperature detection device, the wind speed detection device and the like to obtain sintering conditions of all regions of the gas injection section 2 and calculating the sintering conditions, and then the control device 7 is used for controlling various valves and the like to accurately inject gas.
The gas injection device is further explained by taking the injection of coke oven gas as an example: the maximum coke oven gas flow designed by the coke oven gas injection system is 2000m3And h, the air speed of the charge level of the sintering machine (generally 0.5-1 m/s) is calculated according to 0.5m/s, the concentration of the coke oven gas is reduced to 1.10 percent when the coke oven gas enters the charge level, wherein the concentrations of hydrogen and carbon monoxide are respectively only 0.62 percent and 0.063 percent, and the concentrations are far away from the explosion concentration range of the hydrogen and the carbon monoxide. The design air quantity of a main exhaust fan matched with the sintering machine is 18500m3And/min, the concentration of the coke oven gas is 0.1 percent calculated according to the fact that the sprayed coke oven gas completely enters the flue, wherein the concentrations of hydrogen and carbon monoxide are respectively only 0.06 percent and 0.01 percent and are far lower than the explosion concentration area, and the influence on the safe operation of the electric precipitation can not be brought.
More specifically, considering the injection amount of coke oven gas and the overall benefit balance point of the gas injection, the injection amount of coke oven gas during normal production is generally 1200-1800m3H, with a specific flow rate of 1400m3Setting the flow of a gas main pipe according to/h, and obtaining the initial set flow V of each spraying unit according to the flow average value of each spraying unit0(ii) a During normal production, the opening of the 6# -13# bellows is 100%; the stage change of the air permeability in the sintering process and the adjustment of water carbon and the like can cause the change of the sintering air permeability, and the corresponding change of the air speed of the sintering charge surface is also caused; meanwhile, the thermal state, the heat storage level and the heat exchange level of each air box of the sintering machine at the corresponding position are different, and the corresponding heat brought by the gas injection is also distinguished. In order to keep the spraying effect under different sintering parameters, the control device sprays the spraying flow of each group of spraying units according to the wind speed and the average wind speed,And comparing and calculating the corresponding air box temperature and the average temperature of all the air boxes, and performing compensation adjustment, wherein the compensated flow is used as the actual control flow of each group of spraying units.
Firstly, the average value of all temperature detection values of the south and north sides of the 6# -13# wind boxes is calculated, and the formula is shown as follows:
and then respectively calculating the temperature mean values of the north and south sides of the corresponding air boxes of the front group, the middle group and the rear group, wherein the formula is as follows:
and then respectively calculating the average wind speeds of the corresponding positions of the front group, the middle group and the rear group, which is shown in the following formula:
Saverage of group i＝(Si group of south wind speed+Si group of north wind speed)/2(i＝1-3)
Calculating the overall average wind speed covering all the spraying units, namely the front group, the middle group and the rear group, and according to the following formula:
the control device compares the jet flow of each group with the average wind speed, the corresponding wind box temperature and the average temperature of all wind boxes, calculates and compensates and adjusts the jet flow, and the formula is shown below, wherein the weight of the wind box temperature compensationThe weight is 60% and the wind speed compensation weight is 40%. Calculating to obtain new VAdjustment ofAnd the value is used for participating in the regulation and control of the gas flow of each spraying unit.
Main technical indexes of sintering
It can be seen from the above that, the utility model discloses still can realize the segmentation accurate control that sintering charge face gas injection adds, and can adapt to the compensation adjustment when sintering process gas permeability and temperature hot state level change, avoid the shortcoming that the coal gas constant volume was added for sintering charge face gas injection adds the actual effect more obvious.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (7)
1. A sintering charge level gas injection device of a sintering machine comprises a sintering machine ignition furnace (1) and a gas injection section (2) which are arranged in front and at the back, wherein a sintering trolley (3) is arranged on the sintering machine; the below of gas injection section (2) evenly is provided with a plurality of bellows (9), its characterized in that: the fuel gas injection device comprises a fuel gas main pipe (44) and a nitrogen pipeline (43); the gas main pipe (44) is connected with a plurality of gas branch pipes (45), and each gas branch pipe (45) is uniformly arranged above the gas spraying section (2) along the length direction of the gas spraying section (2); each gas branch pipe (45) is sequentially provided with a branch pipe flowmeter (451), a branch pipe pneumatic quick-switching valve (452) and a branch pipe electric regulating valve (453), and the end parts of the branch pipe pneumatic quick-switching valves are connected with a group of spraying units (21); the nitrogen pipeline (43) is connected with a plurality of nitrogen branch pipes (431) which are in one-to-one correspondence with the gas branch pipes (45), and the tail end of each nitrogen branch pipe (431) is connected with a branch pipe pneumatic quick-switching valve (452) on the corresponding gas branch pipe (45).
2. The sintering charge level gas injection device of the sintering machine as claimed in claim 1, wherein each group of said injection units (21) is symmetrically arranged about the center line of the gas injection section (2).
3. The sintering charge level gas injection device of the sintering machine as claimed in claim 1, wherein the main pipe (44) is provided with a main pipe manual cut-off valve (441), a main pipe blind valve (442), a main pipe manual ball valve (443), a main pipe electric quick-cutting valve (444), a main pipe electric regulating valve (445) and a main pipe flow meter (446) in sequence.
4. The sintering charge level gas injection device of the sintering machine according to any one of claims 1 to 3, characterized in that the injection unit (21) comprises a height adjusting pipe (211), a driving device (212) and a rotary nozzle (213); the upper end of the height adjusting pipe (211) is communicated with the gas branch pipe (45) through a rotary joint (214), the bottom end of the height adjusting pipe is communicated with the rotary spray head (213), the pipe body of the height adjusting pipe is movably connected with the output end of the driving device (212), and the height adjusting pipe (211) can rotate under the driving of the driving device (212).
5. The sintering charge surface gas injection device of the sintering machine as claimed in claim 4, characterized in that a metal connecting hose (454) is further arranged between the rotary joint (214) and the gas branch pipe (45).
6. The sintering charge level gas injection device of the sintering machine as claimed in claim 5, wherein the rotary spray head (213) comprises three injection pipes equally distributed along the circumference, and the middle part and the outer end part of each injection pipe are respectively provided with nozzles facing to the same side.
7. The sintering charge level gas injection device of the sintering machine as claimed in claim 5 or 6, further comprising a plurality of flame detection devices (22), a plurality of hydrogen detection devices (23), a plurality of carbon monoxide detection devices (24), a plurality of exhaust gas temperature detection devices (6), a control device (7) and a plurality of wind speed detection devices (8); the flame detection devices (22) are uniformly arranged on the sintering trolley (3); the hydrogen detection device (23) is arranged at each group of spraying units (21); the carbon monoxide detection devices (24) are uniformly arranged along the length direction of the fuel gas spraying section (2); the waste gas temperature detection device (6) is arranged at each air box (9); the wind speed detection devices (8) are uniformly arranged above the gas spraying section (2); the device comprises a flame detection device (22), a hydrogen detection device (23), a carbon monoxide detection device (24), an exhaust gas temperature detection device (6), a wind speed detection device (8), a driving device (212), a main pipe blind valve (442), a main pipe electric quick-switching valve (444), a main pipe electric regulating valve (445), a main pipe flow meter (446), a branch pipe flow meter (451), a branch pipe pneumatic quick-switching valve (452) and a branch pipe electric regulating valve (453), wherein the flame detection device, the hydrogen detection device (23), the carbon monoxide detection device (24), the exhaust gas temperature detection device, the wind speed detection device, the driving device (212), the main pipe blind valve (442), the main pipe electric quick-switching valve (444), the main pipe electric regulating valve (445), the main pipe flow meter (446), the branch pipe flow meter (451), the branch pipe pneumatic quick-switching valve (452) and the branch pipe electric regulating valve (453) are respectively connected into a control device (7) through lines.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022855479.0U CN214276529U (en) | 2020-12-01 | 2020-12-01 | Sintering charge level gas injection device of sintering machine |
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| CN202022855479.0U CN214276529U (en) | 2020-12-01 | 2020-12-01 | Sintering charge level gas injection device of sintering machine |
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| CN202022855479.0U Active CN214276529U (en) | 2020-12-01 | 2020-12-01 | Sintering charge level gas injection device of sintering machine |
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2020
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