CN113188338A - Metallurgical stove gas safety, spray gun interlocking control protection system - Google Patents
Metallurgical stove gas safety, spray gun interlocking control protection system Download PDFInfo
- Publication number
- CN113188338A CN113188338A CN202110538902.0A CN202110538902A CN113188338A CN 113188338 A CN113188338 A CN 113188338A CN 202110538902 A CN202110538902 A CN 202110538902A CN 113188338 A CN113188338 A CN 113188338A
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- Prior art keywords
- gas
- oxygen
- compressed air
- nitrogen
- valve
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- 239000007921 spray Substances 0.000 title claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 146
- 239000007789 gas Substances 0.000 claims description 92
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 78
- 239000001301 oxygen Substances 0.000 claims description 78
- 229910052760 oxygen Inorganic materials 0.000 claims description 78
- 229910052757 nitrogen Inorganic materials 0.000 claims description 73
- 238000001514 detection method Methods 0.000 claims description 54
- 230000001105 regulatory effect Effects 0.000 claims description 38
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 24
- 239000003345 natural gas Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
- F27D2019/004—Fuel quantity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D2021/0057—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D2021/0057—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects
- F27D2021/0085—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects against molten metal, e.g. leakage or splashes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a metallurgical furnace gas safety and spray gun interlocking control protection system, which belongs to the technical field of non-ferrous smelting automatic control safety. The system has the characteristics of stable and reliable system structure, high automation degree, wide application range and the like, can automatically and timely send out an interlocking shutdown instruction, not only plays a role in gas safety interlocking, but also can interlock and protect the spray gun, and achieves the purpose of protecting the safety of equipment.
Description
Technical Field
The invention belongs to the technical field of non-ferrous smelting automatic control safety, and particularly relates to a metallurgical furnace gas safety and spray gun interlocking control protection system.
Background
The metallurgical furnace uses natural gas (coal gas) as a heat source for providing in the smelting process, oxygen is used for supporting combustion, materials are melted or the temperature of molten slag is increased so as to meet the smelting requirement, normal production of the metallurgical furnace is influenced by internal and external reasons such as electric power, pipe networks and the like in the production process, when gas is stopped urgently in an accident, if a gas safety interlocking and spray gun interlocking protection system is not provided, on one hand, gas safety accidents such as gas leakage, burning explosion, poisoning and the like can be caused, on the other hand, the spray gun is blocked or instantly burnt and damaged due to sudden stop of using the gas, and only furnace shutdown and replacement processing can be carried out. If only natural gas (coal gas) and nitrogen are instantly charged with nitrogen for protection, and oxygen and compressed air are instantly charged with compressed air for protection, high-temperature slag in the metallurgical furnace can still be filled into a spray gun channel after the action is finished, so that the spray gun is blocked.
Disclosure of Invention
The invention provides a metallurgical furnace gas safety and spray gun interlocking control protection system in order to overcome the problems in the background art, and the system has the characteristics of stable and reliable system structure, high automation degree, wide application range and the like, can automatically and timely send out an interlocking stop instruction, not only plays a role of gas safety interlocking, but also can interlock and protect a spray gun, and achieves the purpose of protecting the safety of equipment.
In order to realize the purpose, the invention is realized by the following technical scheme:
the metallurgical furnace gas safety and spray gun interlocking control protection system comprises a gas system, an oxygen system, a nitrogen system, a compressed air system, a spray gun system and a metallurgical furnace, wherein the nitrogen system is connected with the gas system and collected and then connected with the spray gun system, the compressed air system is connected with the oxygen system and collected and then connected with the spray gun system, and the spray gun system is connected with the metallurgical furnace.
Further, the gas system include that the gas is responsible for, gas site pressure detection device, the quick trip valve of gas, the long-range pressure detection device of gas, gas pressure regulating valve, gas flow metering device, gas flow control valve, the gas is responsible for and is connected the back with the gas station and has set gradually gas site pressure detection device, the quick trip valve of gas, the long-range pressure detection device of gas, gas pressure regulating valve, gas flow metering device, gas flow control valve above that.
Preferably, natural gas is introduced into the gas main pipe.
Furthermore, the nitrogen system comprises a nitrogen main pipe, a nitrogen field pressure detection device, a nitrogen rapid cut-off valve, a nitrogen remote pressure detection device, a nitrogen pressure regulating valve, a nitrogen flow metering device and a nitrogen flow regulating valve, wherein the nitrogen main pipe is sequentially provided with the nitrogen field pressure detection device, the nitrogen rapid cut-off valve, the nitrogen remote pressure detection device, the nitrogen pressure regulating valve, the nitrogen flow metering device and the nitrogen flow regulating valve after being connected with the nitrogen station.
Further, the oxygen system include that oxygen is responsible for, oxygen site pressure detection device, oxygen quick cut-off valve, the long-range pressure detection device of oxygen, oxygen pressure regulating valve, oxygen flow measurement device, oxygen flow control valve, the oxygen is responsible for and is provided with oxygen site pressure detection device, the quick cut-off valve of oxygen, the long-range pressure detection device of oxygen, oxygen pressure regulating valve, oxygen flow measurement device, oxygen flow control valve on it in proper order after being connected with the oxygen station.
Further, the compressed air system include that compressed air is responsible for, compressed air site pressure detection device, compressed air quick cut-off valve, the long-range pressure detection device of compressed air, compressed air pressure governing valve, compressed air flow metering device, compressed air flow regulating valve, compressed air is responsible for and is connected the back with the compressed air station and has set gradually compressed air site pressure detection device, compressed air quick cut-off valve, the long-range pressure detection device of compressed air, compressed air pressure governing valve, compressed air flow metering device, compressed air flow regulating valve on it.
Further, the metallurgical furnace gas safety and spray gun interlocking control protection system further comprises a DCS operating system, wherein the DCS operating system comprises a gas control system, a nitrogen control system, an oxygen control system and a compressed air control system, the gas control system is interlocked with the nitrogen control system, and the oxygen control system is interlocked with the compressed air control system.
Furthermore, the interlocking pressure can be set at 0.015MPa-1.0MPa according to production requirements.
Further, the flow interlock may be at 100Nm depending on production requirements3/h—5000Nm3The condition is set.
The invention has the beneficial effects that:
the system has the characteristics of stable and reliable system structure, high automation degree, wide application range and the like, can automatically and timely send out an interlocking shutdown instruction, not only plays a role in gas safety interlocking, but also can interlock and protect the spray gun, and achieves the purpose of protecting the safety of equipment.
Drawings
FIG. 1 is a schematic view of the interlocking of the gas system and the nitrogen system of the present invention;
FIG. 2 is a schematic view of the oxygen system and compressed air system interlock of the present invention;
FIG. 3 is a control diagram of the PC system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, the metallurgical furnace gas safety and lance interlock control protection system includes a gas system, an oxygen system, a nitrogen system, a compressed air system, a lance system, and a metallurgical furnace, wherein the nitrogen system is connected with the gas system and then collected and connected with the lance system, the compressed air system is connected with the oxygen system and then collected and connected with the lance system, and the lance system is connected with the metallurgical furnace.
The metallurgical furnace gas safety and spray gun interlocking control protection system further comprises a DCS operating system, wherein the DCS operating system comprises a gas control system, a nitrogen control system, an oxygen control system and a compressed air control system, the gas control system is interlocked with the nitrogen control system, and the oxygen control system is interlocked with the compressed air control system. When the interlocking condition of the DCS operation system triggers interlocking, the operation of a gas safety and a metallurgical furnace is protected, and meanwhile, the in-use spray gun is effectively protected, so that the spray gun is prevented from being blocked and burnt to influence the service life of the spray gun and the safety of the metallurgical furnace.
The gas system include that the gas is responsible for, gas site pressure detection device, gas quick cut-off valve, the long-range pressure detection device of gas, gas pressure regulating valve, gas flow metering device, gas flow control valve, the gas is responsible for and is connected the back with the gas station and has set gradually gas site pressure detection device, gas quick cut-off valve, the long-range pressure detection device of gas, gas pressure regulating valve, gas flow metering device, gas flow control valve above that.
The gas main pipe is internally communicated with natural gas.
The nitrogen system comprises a nitrogen main pipe, a nitrogen field pressure detection device, a nitrogen quick cut-off valve, a nitrogen remote pressure detection device, a nitrogen pressure regulating valve, a nitrogen flow metering device and a nitrogen flow regulating valve, wherein the nitrogen main pipe is sequentially provided with the nitrogen field pressure detection device, the nitrogen quick cut-off valve, the nitrogen remote pressure detection device, the nitrogen pressure regulating valve, the nitrogen flow metering device and the nitrogen flow regulating valve after being connected with a nitrogen station. The nitrogen field pressure detection device, the nitrogen quick cut-off valve, the nitrogen remote pressure detection device, the nitrogen pressure regulating valve, the nitrogen flow metering device and the nitrogen flow regulating valve are interlocked with the PC system.
The oxygen system include that oxygen is responsible for, oxygen site pressure detection device, oxygen quick cut-off valve, the long-range pressure detection device of oxygen, oxygen pressure regulating valve, oxygen flow measurement device, oxygen flow control valve, oxygen is responsible for and is provided with oxygen site pressure detection device, the quick cut-off valve of oxygen, the long-range pressure detection device of oxygen, oxygen pressure control valve, oxygen flow measurement device, oxygen flow control valve on it in proper order after being connected with the oxygen station. The oxygen field pressure detection device, the oxygen quick cut-off valve, the oxygen remote pressure detection device, the oxygen pressure regulating valve, the oxygen flow measuring device and the oxygen flow regulating valve are interlocked with the PC system. When the system detects that oxygen fault triggers any interlocking condition, the system automatically cuts off oxygen supply, compressed air is normally supplied, and natural gas (coal gas) is normally supplied.
The compressed air system include that compressed air is responsible for, compressed air site pressure detection device, compressed air quick cut-off valve, the long-range pressure detection device of compressed air, compressed air pressure regulating valve, compressed air flow metering device, compressed air flow regulating valve, compressed air is responsible for and is provided with compressed air in proper order on it after being connected with the compressed air station in compressed air, compressed air site pressure detection device, compressed air quick cut-off valve, the long-range pressure detection device of compressed air, compressed air pressure regulating valve, compressed air flow metering device, compressed air flow regulating valve. The compressed air field pressure detection device, the compressed air quick cut-off valve, the compressed air remote pressure detection device, the compressed air pressure regulating valve, the compressed air flow metering device and the compressed air flow regulating valve are interlocked with the PC system.
The interlocking pressure can be set at 0.015MPa-1.0MPa according to the production requirement.
The flow interlocking can be 100Nm according to the production requirement3/h—5000Nm3The condition is set.
As shown in fig. 1 and 2, when the system detects that the pressure or flow of the natural gas pipeline and the oxygen pipeline is lower than the safety set value, the system starts an abnormal program: the natural gas and oxygen main pipe quick cut-off valve is closed, and the nitrogen and compressed air quick cut-off valve is opened to ensure that the pressure and flow in the pipeline are ensured, and the spray gun system is not blocked, so that the safety of equipment and the safety of the furnace kiln are ensured. In other abnormal conditions, the emergency stop button is pressed, and the system is forced to enter an abnormal stop state.
The working principle of the invention is as follows:
the system is connected with each control system through a signal acquisition and controller and is fed back to a PC system in a centralized manner so as to realize centralized control. The PC computer system makes the systems independently controlled and simultaneously can realize mutual interlocking control.
In a normal production mode: the natural gas and oxygen pipeline quick cut-off valve belongs to a normally open state, and the nitrogen and compressed air pipeline quick cut-off valve belongs to a normally closed state (as shown in figures 1 and 2), and the PC system can adjust the pressure and the flow of the natural gas and the oxygen in real time. And simultaneously, low-pressure and low-flow interlocking is set, and when the pressure and the flow reach set values, the system starts emergency stop to realize safety production interlocking.
In the abnormal condition: the natural gas and oxygen pipeline quick cut-off valve belongs to a normally closed state, and the nitrogen and compressed air pipeline quick cut-off valve belongs to a normally open state (as shown in figures 1 and 2), and the PC system automatically judges and then enters an emergency program to realize interlocking parking.
Under emergency, the system quickly starts emergency stop, and the valve state is switched to an abnormal mode state to realize emergency stop.
When the system of the invention detects that the pressure or the flow of the gas pipeline and the oxygen pipeline is lower than the safety set value, the system starts an abnormal program: the natural gas and oxygen main pipe quick cut-off valve is closed, and the nitrogen and compressed air quick cut-off valve is opened to ensure that the pressure and flow in the pipeline are ensured, and the spray gun system is not blocked, so that the safety of equipment and the safety of the furnace kiln are ensured. In other abnormal conditions, the emergency stop button is pressed, and the system is forced to enter an abnormal stop state. The system has the characteristics of stable and reliable structure, high automation degree, wide application range and the like, can automatically and timely send out an interlocking shutdown instruction, not only plays a role in gas safety interlocking, but also can interlock and protect the spray gun, and achieves the purpose of protecting the safety of equipment.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a metallurgical stove gas safety, spray gun interlocking control protection system which characterized in that: the metallurgical furnace gas safety and spray gun interlocking control protection system comprises a gas system, an oxygen system, a nitrogen system, a compressed air system, a spray gun system and a metallurgical furnace, wherein the nitrogen system is connected with the gas system and collected and then connected with the spray gun system, the compressed air system is connected with the oxygen system and collected and then connected with the spray gun system, and the spray gun system is connected with the metallurgical furnace.
2. The metallurgical furnace gas safety and spray gun interlocking control protection system according to claim 1, characterized in that: the gas system include that the gas is responsible for, gas site pressure detection device, gas quick cut-off valve, the long-range pressure detection device of gas, gas pressure regulating valve, gas flow metering device, gas flow control valve, the gas is responsible for and is connected the back with the gas station and has set gradually gas site pressure detection device, gas quick cut-off valve, the long-range pressure detection device of gas, gas pressure regulating valve, gas flow metering device, gas flow control valve above that.
3. The metallurgical furnace gas safety and spray gun interlocking control protection system according to claim 2, characterized in that: the gas main pipe is internally communicated with natural gas.
4. The metallurgical furnace gas safety and spray gun interlocking control protection system according to claim 1, characterized in that: the nitrogen system comprises a nitrogen main pipe, a nitrogen field pressure detection device, a nitrogen quick cut-off valve, a nitrogen remote pressure detection device, a nitrogen pressure regulating valve, a nitrogen flow metering device and a nitrogen flow regulating valve, wherein the nitrogen main pipe is sequentially provided with the nitrogen field pressure detection device, the nitrogen quick cut-off valve, the nitrogen remote pressure detection device, the nitrogen pressure regulating valve, the nitrogen flow metering device and the nitrogen flow regulating valve after being connected with a nitrogen station.
5. The metallurgical furnace gas safety and spray gun interlocking control protection system according to claim 1, characterized in that: the oxygen system include that oxygen is responsible for, oxygen site pressure detection device, oxygen quick cut-off valve, the long-range pressure detection device of oxygen, oxygen pressure regulating valve, oxygen flow measurement device, oxygen flow control valve, oxygen is responsible for and is provided with oxygen site pressure detection device, the quick cut-off valve of oxygen, the long-range pressure detection device of oxygen, oxygen pressure control valve, oxygen flow measurement device, oxygen flow control valve on it in proper order after being connected with the oxygen station.
6. The metallurgical furnace gas safety and spray gun interlocking control protection system according to claim 1, characterized in that: the compressed air system include that compressed air is responsible for, compressed air site pressure detection device, compressed air quick cut-off valve, the long-range pressure detection device of compressed air, compressed air pressure regulating valve, compressed air flow metering device, compressed air flow regulating valve, compressed air is responsible for and is provided with compressed air site pressure detection device, compressed air quick cut-off valve, the long-range pressure detection device of compressed air, compressed air pressure regulating valve, compressed air flow metering device, compressed air flow regulating valve on it in proper order after being connected with the compressed air station.
7. The metallurgical furnace gas safety and lance interlock control protection system according to any one of claims 1-6, wherein: the metallurgical furnace gas safety and spray gun interlocking control protection system further comprises a DCS operating system, wherein the DCS operating system comprises a gas control system, a nitrogen control system, an oxygen control system and a compressed air control system, the gas control system is interlocked with the nitrogen control system, and the oxygen control system is interlocked with the compressed air control system.
8. The metallurgical furnace gas safety and lance interlock control protection system according to claim 7, wherein: the interlocking pressure can be set at 0.015MPa-1.0MPa according to the production requirement.
9. The metallurgical furnace gas safety and lance interlock control protection system according to claim 7, wherein: the flow interlocking can be 100Nm according to the production requirement3/h—5000Nm3The condition is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538902.0A CN113188338A (en) | 2021-05-18 | 2021-05-18 | Metallurgical stove gas safety, spray gun interlocking control protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538902.0A CN113188338A (en) | 2021-05-18 | 2021-05-18 | Metallurgical stove gas safety, spray gun interlocking control protection system |
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| Publication Number | Publication Date |
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| CN113188338A true CN113188338A (en) | 2021-07-30 |
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|---|---|---|---|
| CN202110538902.0A Pending CN113188338A (en) | 2021-05-18 | 2021-05-18 | Metallurgical stove gas safety, spray gun interlocking control protection system |
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| CN202576472U (en) * | 2012-04-29 | 2012-12-05 | 李飞翔 | Air hole type anti-sticking oxygen lance |
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