CN219656635U - Automatic control system for emergency wind of side-blowing furnace - Google Patents
Automatic control system for emergency wind of side-blowing furnace Download PDFInfo
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- CN219656635U CN219656635U CN202320503203.7U CN202320503203U CN219656635U CN 219656635 U CN219656635 U CN 219656635U CN 202320503203 U CN202320503203 U CN 202320503203U CN 219656635 U CN219656635 U CN 219656635U
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- 238000007664 blowing Methods 0.000 title claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 230000000007 visual effect Effects 0.000 claims description 13
- 239000007789 gas Substances 0.000 description 32
- 238000003723 Smelting Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The utility model provides an automatic control system of side-blown furnace emergency wind, comprising: the air inlet of the side-blowing furnace is connected with a second pressure detector; one end of the emergency air pipeline is connected with the air inlet, an air storage tank is arranged on the emergency air pipeline, and a second regulating valve is arranged between the air storage tank and the side blowing furnace; one end of the primary air supply pipeline is connected with the air inlet, the other end of the primary air supply pipeline is connected with the air supply inlet, and a first regulating valve is arranged on the primary air supply pipeline; and the controller is connected with the second pressure detector, receives real-time data monitored by the second pressure detector, and controls the opening and closing degree of the first regulating valve and/or the second regulating valve according to the real-time data so as to maintain the numerical value of the second pressure detector within a preset range. According to the above description, the automatic control of the pressure in the air supply pipeline can be realized, the air valve is interlocked, the air supply of the emergency air pipeline is automatically started and regulated, and the air pressure in the side blowing furnace is ensured to be stable.
Description
Technical Field
The utility model relates to the technical field of side-blown furnaces, in particular to an automatic control system for emergency wind of a side-blown furnace.
Background
At present, more advanced and energy-saving copper smelting processes include bottom blowing smelting, side blowing smelting, flash smelting and the like. Side-blown smelting is the fastest growing and most widely used copper smelting process in recent years. The copper concentrate is added into a side-blown furnace through a furnace top charging port, oxygen and air are sprayed into the furnace through a spray gun arranged on the side part of the furnace body, and a series of chemical reactions are carried out, so that copper matte with 45% -75% copper content is produced. The side blowing furnace adopts a fixed horizontal furnace, and when the accident stops gas or air, the molten mass flows backward and the air hole is blocked, so that the furnace is dead. The normal operation is resumed for a long time, the production is seriously affected, and the enterprise is greatly lost.
At present, most of side-blown furnaces do not have an emergency air pipeline in the industrial site, and an air supply pipeline (namely a primary air supply pipeline) with primary air for entering the side-blown furnace is arranged, namely air and industrial oxygen are mixed according to a certain proportion through flow regulation and then blown into the side-blown furnace. After the air supply pipeline stops air and alarms, the safety of poking the air eyes manually is low, and a small amount of air eyes are easily blocked by the backflow of the melt. Although emergency air supply pipelines are additionally arranged in a few smelting plants, the automation level is not high, and the detection of the automatic control instrument is not enough.
Disclosure of Invention
In view of the above problems, the utility model aims to provide an automatic control system for the emergency wind of a side-blown furnace, which solves the problems of reverse flow of melt and air hole blocking when the accident stops wind in the prior art, avoids the operation of manually dredging the air hole, improves the working efficiency and has high automation level.
The utility model provides an automatic control system of side-blown converter emergency wind, comprising:
the air inlet of the side-blowing furnace is connected with a second pressure detector;
one end of the emergency air pipeline is connected with the air inlet, an air storage tank is arranged on the emergency air pipeline, and a second regulating valve is arranged between the air storage tank and the side blowing furnace;
one end of the primary air supply pipeline is connected with the air inlet, the other end of the primary air supply pipeline is connected with the air supply inlet, and a first regulating valve is arranged on the primary air supply pipeline;
and the controller is connected with the second pressure detector, receives real-time data monitored by the second pressure detector, and controls the opening and closing degree of the first regulating valve and/or the second regulating valve according to the real-time data so as to maintain the numerical value of the second pressure detector within a preset range.
In addition, the other end of the emergency air pipeline is connected with a pipe network, and a cut-off valve and a first pressure detector are sequentially arranged between the pipe network and the air storage tank;
the controller is connected with the first pressure detector and the cut-off valve, receives real-time data monitored by the first pressure detector, and controls the cut-off valve to be opened and closed according to the real-time data, so that the numerical value of the first pressure detector is maintained within a standard range.
In addition, the preferable scheme further comprises:
and the alarm is arranged on the side-blowing furnace and is connected with the second pressure detector, wherein the alarm is an audible and visual alarm.
In addition, the preferable scheme further comprises:
and the booster pump is arranged on the emergency air pipeline and is positioned between the cut-off valve and the first pressure detector.
In addition, the preferable scheme further comprises:
and one end of the main air supply pipeline is connected with the air inlet, the other end of the main air supply pipeline is respectively connected with the emergency air pipeline and the primary air supply pipeline, and the second pressure detector is arranged on the main air supply pipeline.
As can be seen from the above description, the automatic control system for the side-blown furnace emergency air provided by the utility model has the advantages that the second regulating valve is arranged on the emergency air pipeline, when the second pressure detector detects that the air pressure of the primary air supply pipeline is insufficient, the controller on the second pressure detector controls the opening and closing degree of the second regulating valve, so that the air in the emergency air pipeline enters the side-blown furnace, the normal air supply of the side-blown furnace is ensured, the safety in the furnace is ensured, and the stable production of the side-blown furnace is ensured.
Drawings
In the drawings:
FIG. 1 is a block diagram of a first embodiment of an automatic control system for side-blown furnace emergency winds of the present utility model;
FIG. 2 is a block diagram of a second embodiment of the automatic control system for side-blown furnace emergency wind of the present utility model;
the same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a block diagram of a first embodiment of an automatic control system for side-blown furnace emergency wind according to the present utility model.
As shown in fig. 1, a schematic diagram of a first embodiment of an automatic control system for emergency wind of a side-blown converter according to the present utility model includes a side-blown converter, an emergency wind pipe, a primary wind supply pipe, and a controller.
The air inlet of the side blowing furnace is connected with a second pressure detector. One end of the emergency air pipeline is connected with the air inlet, an air storage tank is arranged on the emergency air pipeline, and a second regulating valve is arranged between the air storage tank and the side blowing furnace. One end of the primary air supply pipeline is connected with the air inlet, the other end of the primary air supply pipeline is connected with the air supply inlet, and a first regulating valve is arranged on the primary air supply pipeline. The controller is connected with the second pressure detector, receives real-time data monitored by the second pressure detector, and controls the opening and closing degree of the first regulating valve and/or the second regulating valve according to the real-time data so as to maintain the numerical value of the second pressure detector within a preset range.
In one embodiment, when the second pressure detector detects that the air pressure supplied to the side-blowing furnace is insufficient, the second pressure detector firstly adjusts the opening and closing degree of the first adjusting valve, and when the opening degree of the first adjusting valve is maximum and the air pressure is still insufficient, the second pressure detector then adjusts the opening degree of the second adjusting valve, and the value of the second pressure detector is maintained in a preset range.
Specifically, the other end of the emergency air pipeline is connected with a pipe network, a cut-off valve and a first pressure detector are sequentially arranged between the pipe network and an air storage tank, wherein a controller is connected with the first pressure detector and the cut-off valve, receives real-time data monitored by the first pressure detector, and controls the cut-off valve to be opened and closed according to the real-time data, so that the value of the first pressure detector is maintained within a standard range.
Fig. 2 is a block diagram of a second embodiment of the automatic control system for side-blown furnace emergency wind of the present utility model.
Fig. 2 is a schematic diagram of a second embodiment of an automatic control system for emergency wind of a side-blown converter according to the present utility model.
The automatic control system further comprises an alarm which is arranged on the side-blowing furnace and connected with the second pressure detector, wherein the alarm is an audible and visual alarm, the number of the audible and visual alarms is at least two, the audible and visual alarms are respectively arranged on the left side and the right side of the side-blowing furnace, when the second pressure detector monitors that the air pressure value at the air inlet does not meet the operation requirement, the second pressure detector feeds back a signal to the alarm, and an operator is timely reminded of the operation of air hole plugging through the alarm action of the alarm.
The automatic control system further comprises a booster pump, wherein the booster pump is arranged on the emergency air pipeline and is positioned between the cut-off valve and the first pressure detector. In the embodiment, the booster pump is used for boosting the gas input into the emergency air pipeline, and the gas enters the gas storage tank under the action of internal and external pressure, so that when the emergency air pipeline is required to carry out supplementary blowing on the side-blown furnace, the air supply standard of the side-blown furnace can be rapidly reached, and the normal operation of the side-blown furnace is ensured.
The automatic control system further comprises a total air supply pipeline, one end of the total air supply pipeline is connected with the air inlet, the other end of the total air supply pipeline is respectively connected with the emergency air pipeline and the primary air supply pipeline, the second pressure detector is arranged on the total air supply pipeline and can be arranged at the air inlet of the side-blowing furnace, the effect is better on the total air supply pipeline, the air pressure is monitored to be insufficient before the air supply gas does not enter the side-blowing furnace, and compared with the air inlet of the side-blowing furnace, the second pressure detector can timely control the air supply quantity of the emergency air pipeline, reduce the influence of the air pressure on the working state of the side-blowing furnace and ensure the normal operation of the side-blowing furnace.
Specifically, the volume of the air storage tank needs to ensure that emergency gas which lasts for at least 2 minutes and meets certain pressure requirements can be provided for the side-blown furnace body.
The automatic control system for side-blown furnace emergency wind according to the present utility model will be described in detail by way of a more specific embodiment (in the following embodiment, the opening degree of the first regulating valve on the primary air supply duct is maximized, and thus only the opening and closing degree of the second regulating valve is adjusted).
When normal production, the primary air supply pipeline supplies air normally, and the second pressure detector monitors that the air pressure value supplied to the side-blowing furnace fluctuates in a preset range, and during the period, the second pressure detector carries out voltage stabilizing adjustment on a second adjusting valve on the emergency air pipeline through the controller. When the first pressure detector detects that the pressure in front of the air storage tank is lower than a preset value, a controller on the first pressure detector controls the cut-off valve to be opened, so that air in the pipe network enters the booster pump to be pressurized and then is supplied to the air storage tank, and otherwise, the cut-off valve is controlled to be closed.
When the air supply of the primary air supply pipeline fails to enable the air pressure of the air inlet entering the side blowing furnace to be lower than a normal value, the second pressure detector feeds back signals to the audible and visual alarm, so that the audible and visual alarm arranged around the furnace body of the side blowing furnace carries out audible and visual alarm to remind a stoker to carry out air hole plugging operation, and the melt is prevented from being poured into the spray gun. At this time, the second pressure detector controls the opening and closing degree of the second regulating valve through the controller to enable the second regulating valve to be fully opened so as to ensure the pressure of air supply to the furnace body to be stable. Meanwhile, when the first pressure detector monitors that the air pressure of the emergency air pipeline is too low, the first pressure detector controls the opening and closing of the cut-off valve through the controller to enable the cut-off valve to be fully opened, so that air in the pipe network enters the booster pump to be pressurized and then is supplied to the air storage tank. When the pressure of the air storage tank is higher than the pre-charging pressure, the air storage tank exhausts to one side of the side blowing furnace under the action of the internal and external pressure difference, and air is supplied to the total air supply pipeline until the air pressure in the air storage tank is balanced with the air pressure monitored by the first pressure detector on the emergency air supply pipeline. The emergency wind can ensure that a stokehole is blocked for a sufficient time for a stokehole worker, the furnace body is insulated, and production is resumed after the air source is resumed. If production cannot be recovered in a short time, after the melt is emptied, the furnace body is insulated, so that the influence of rapid cooling and rapid heating on the service life of the furnace bricks is avoided.
The automatic control system of the side-blown converter emergency wind mainly comprises two aspects of adjustment:
aspect one: the pressure of the gas entering the side-blowing furnace is regulated, a controller arranged on the second pressure detector analyzes the data monitored by the second pressure detector, and if the pressure of the gas entering the side-blowing furnace is 90-125kPa, the controller arranged on the second pressure detector regulates the pressure of the second regulating valve; if the gas pressure of the second air supply pipeline entering the side blowing furnace is lower than 85kPa, the opening of the second regulating valve is controlled to be completely opened, and the gas in the emergency air supply pipeline enters the side blowing furnace, so that the pipeline pressure and the safety in the furnace are ensured. And when the second pressure detector detects that the gas pressure is lower than 85kPa, the audible and visual alarms interlocked at the two sides of the side blowing furnace carry out audible and visual alarms.
Aspect two: and the pressure of the air storage tank is regulated, a controller arranged on a first pressure detector on the emergency air pipeline analyzes data monitored by the first pressure detector, and when the pressure in the air storage tank is lower than 2-2.5MPa, the controller opens a cut-off valve to enable compressed air with the pressure of about 0.6-0.8MPa to pass through a gas booster pump and rise to 2.5-4MPa and then the compressed air is stored in the air storage tank. When the gas pressure monitored by the first pressure detector is higher than 2.5-4.0MPa, the cut-off valve is closed, and no more air is introduced into the air storage tank.
In the first embodiment (the main air supply pipeline is additionally arranged at the position where the primary air supply pipeline and the emergency air supply pipeline are connected with the air inlet of the side blowing furnace, and the second pressure detector is arranged on the main air supply pipeline):
when the side-blown smelting furnace normally operates, the side-blown smelting furnace is supplied with air by a primary air supply pipeline and a total air supply pipeline, and the pressure of air in the total air supply pipeline is 125kPa. The gas pressure in the emergency air pipeline of the air storage tank and the air outlet of the air storage tank is 2.5MPa, at the moment, the first pressure detector controls the cut-off valve to be in a closed state according to the monitored gas pressure, and the second pressure detector controls the second regulating valve to be in a certain opening range.
When the primary air supply pipeline stops air and loses pressure due to power failure of the whole factory and the like, the second pressure detector monitors that the total air supply pipeline pressure is lower than 110kPa, an audible and visual alarm system around the furnace body is started in an interlocking mode, and a stokehole worker is reminded to conduct air hole plugging operation. When the pressure is lower than 90kPa, namely the second pressure detector controls the second regulating valve to be opened, the air supply system of the air storage tank of the emergency air pipeline is started, emergency air is provided for the total air supply pipeline through the emergency air pipeline, and the air pressure in the total air supply pipeline is ensured to prevent the melt from flowing backwards. The second pressure detector controls the opening and closing states of the second regulating valve according to the monitoring condition, and maintains the pressure of the total air supply pipeline to fluctuate in a small range. The gas in the gas storage tank is conveyed into the total air supply pipeline through the emergency air pipeline and is totally released into the side blowing furnace, and the air pressure in the gas storage tank is reduced to 0.2MPa.
The air storage tank can be inflated when the emergency air source is supplied with air. When the first pressure detector detects that the pressure in the emergency air supply pipeline is 0.2MPa, the cut-off valve is opened, so that compressed air with the pressure of 0.8MPa in the pipeline network is boosted to 2.5MPa through the booster pump, and then the compressed air is stored in the air storage tank. When the first pressure detector between the booster pump and the air storage tank detects that the pressure in the emergency air pipeline is higher than 2.5MPa, the cut-off valve is closed, and air is not fed into the air storage tank any more.
In the second embodiment (a main air supply pipeline is additionally arranged at the position where the primary air supply pipeline and the emergency air supply pipeline are connected with the air inlet of the side-blowing furnace, and the second pressure detector is arranged on the main air supply pipeline):
when the side-blown smelting furnace normally operates, the side-blown smelting furnace is supplied with air by a primary air supply pipeline and a total air supply pipeline, and the pressure of air in the total air supply pipeline is 115kPa. The gas pressure in the emergency air pipeline of the air storage tank and the air outlet of the air storage tank is 3.0MPa, at the moment, the first pressure detector controls the cut-off valve to be in a closed state according to the monitored gas pressure, and the second pressure detector controls the second regulating valve to be in a certain opening range.
When the primary air supply pipeline stops air and loses pressure due to power failure of the whole factory and the like, the second pressure detector monitors that the total air supply pipeline pressure is lower than 95kPa, an audible and visual alarm system around the furnace body is started in an interlocking mode, and a stokehole worker is reminded to conduct air hole plugging operation. When the pressure is lower than 85kPa, namely the second pressure detector controls the second regulating valve to be opened, the air supply system of the air storage tank of the emergency air pipeline is started, emergency air is provided for the total air supply pipeline through the emergency air pipeline, and the air pressure in the total air supply pipeline is ensured to prevent the melt from flowing backwards. The second pressure detector controls the opening and closing states of the second regulating valve according to the monitoring condition, and maintains the pressure of the total air supply pipeline to fluctuate in a small range. The gas in the gas storage tank is conveyed into the total air supply pipeline through the emergency air pipeline and is totally released into the side blowing furnace, and the air pressure in the gas storage tank is reduced to 0.15MPa.
The air storage tank can be inflated when the emergency air source is supplied with air. The first pressure detector detects that the pressure in the emergency air supply pipeline is 0.15MPa, and the cut-off valve is opened, so that the compressed air with the pressure of 0.8MPa in the pipeline network is pressurized to 3MPa through the gas booster pump and then is stored in the gas storage tank. When the first pressure detector between the booster pump and the air storage tank detects that the pressure in the emergency air pipeline is higher than 3MPa, the cut-off valve is closed, and air is not fed into the air storage tank any more.
In the third embodiment (a main air supply pipeline is additionally arranged at the position where the primary air supply pipeline and the emergency air supply pipeline are connected with the air inlet of the side-blowing furnace, and the second pressure detector is arranged on the main air supply pipeline):
when the side-blown smelting furnace normally operates, the side-blown smelting furnace is supplied with air by a primary air supply pipeline and a total air supply pipeline, and the pressure of air in the total air supply pipeline is 120kPa. The gas pressure in the emergency air pipeline of the air storage tank and the air outlet of the air storage tank is 2.8MPa, at the moment, the first pressure detector controls the cut-off valve to be in a closed state according to the monitored gas pressure, and the second pressure detector controls the second regulating valve to be in a certain opening range.
When the primary air supply pipeline stops air and loses pressure due to power failure of the whole factory and the like, the second pressure detector monitors that the total air supply pipeline pressure is lower than 100kPa, an audible and visual alarm system around the furnace body is started in an interlocking mode, and a stokehole worker is reminded to conduct air hole plugging operation. When the pressure is lower than 87kPa, namely the second pressure detector controls the second regulating valve to be opened, the air supply system of the air storage tank of the emergency air pipeline is started, emergency air is provided for the total air supply pipeline through the emergency air pipeline, and the air pressure in the total air supply pipeline is ensured to prevent the melt from flowing backwards. The second pressure detector controls the opening and closing states of the second regulating valve according to the monitoring condition, and maintains the pressure of the total air supply pipeline to fluctuate in a small range. The gas in the gas storage tank is conveyed into the total air supply pipeline through the emergency air pipeline and is totally released into the side blowing furnace, and the air pressure in the gas storage tank is reduced to 0.18MPa.
The air storage tank can be inflated when the emergency air source is supplied with air. The first pressure detector detects that the pressure in the emergency air supply pipeline is 0.18MPa, and the cut-off valve is opened, so that the compressed air with the pressure of 0.8MPa in the pipeline network is pressurized to 2.8MPa through the gas booster pump and then is stored in the gas storage tank. When the first pressure detector between the booster pump and the air storage tank detects that the pressure in the emergency air pipeline is higher than 2.8MPa, the cut-off valve is closed, and air is not fed into the air storage tank any more.
According to the automatic control system for the side-blown furnace emergency air, provided by the utility model, the emergency air pipeline connected with the primary air supply pipeline in parallel is arranged, the double pipelines supply air for the side-blown furnace, the primary air supply pipeline supplies air for the side-blown furnace in normal production, when an accident occurs, the control valve and the second control valve arranged on the emergency air pipeline are adjusted to control the air supply quantity of the emergency air pipeline, or the first control valve on the primary air supply pipeline controls the air supply quantity of the primary air supply pipeline, the controller is used for effectively controlling the primary air and the emergency air pipeline, the pipeline pressure is stabilized at the first time under the condition of air stopping, the interlocking air valve is automatically started and adjusted, the emergency air supply is protected, the furnace body is protected, the air pressure in the furnace is ensured to be stable, and finally the stable operation of the production process is realized.
The automatic control system of the side-blown converter emergency wind according to the present utility model is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the automatic control system for side-blown furnace emergency wind as set forth herein without departing from the teachings of the present utility model. Accordingly, the scope of the utility model should be determined from the following claims.
Claims (5)
1. An automatic control system for emergency wind of a side-blown converter, comprising:
the air inlet of the side-blowing furnace is connected with a second pressure detector;
one end of the emergency air pipeline is connected with the air inlet, an air storage tank is arranged on the emergency air pipeline, and a second regulating valve is arranged between the air storage tank and the side blowing furnace;
one end of the primary air supply pipeline is connected with the air inlet, the other end of the primary air supply pipeline is connected with the air supply inlet, and a first regulating valve is arranged on the primary air supply pipeline;
and the controller is connected with the second pressure detector, receives real-time data monitored by the second pressure detector, and controls the opening and closing degree of the first regulating valve and/or the second regulating valve according to the real-time data so as to maintain the numerical value of the second pressure detector within a preset range.
2. The automatic control system for side-blown converter emergency wind according to claim 1, wherein,
the other end of the emergency air pipeline is connected with a pipe network, and a cut-off valve and a first pressure detector are sequentially arranged between the pipe network and the air storage tank;
the controller is connected with the first pressure detector and the cut-off valve, receives real-time data monitored by the first pressure detector, and controls the opening and closing degree of the cut-off valve according to the real-time data.
3. The automatic control system for side-blown converter emergency wind according to claim 1, further comprising:
and the alarm is arranged on the side-blowing furnace and is connected with the second pressure detector, wherein the alarm is an audible and visual alarm.
4. The automatic control system for side-blown converter emergency wind according to claim 2, further comprising:
and the booster pump is arranged on the emergency air pipeline and is positioned between the cut-off valve and the first pressure detector.
5. The automatic control system for side-blown converter emergency wind according to claim 4, further comprising:
and one end of the main air supply pipeline is connected with the air inlet, the other end of the main air supply pipeline is respectively connected with the emergency air pipeline and the primary air supply pipeline, and the second pressure detector is arranged on the main air supply pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320503203.7U CN219656635U (en) | 2023-03-10 | 2023-03-10 | Automatic control system for emergency wind of side-blowing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320503203.7U CN219656635U (en) | 2023-03-10 | 2023-03-10 | Automatic control system for emergency wind of side-blowing furnace |
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| Publication Number | Publication Date |
|---|---|
| CN219656635U true CN219656635U (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320503203.7U Active CN219656635U (en) | 2023-03-10 | 2023-03-10 | Automatic control system for emergency wind of side-blowing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219656635U (en) |
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2023
- 2023-03-10 CN CN202320503203.7U patent/CN219656635U/en active Active
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