CN210367841U - Safety protection system for spraying combustible gas on sintering charge level - Google Patents
Safety protection system for spraying combustible gas on sintering charge level Download PDFInfo
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- CN210367841U CN210367841U CN201921227019.4U CN201921227019U CN210367841U CN 210367841 U CN210367841 U CN 210367841U CN 201921227019 U CN201921227019 U CN 201921227019U CN 210367841 U CN210367841 U CN 210367841U
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Abstract
The utility model discloses a sintering charge level spouts adds combustible gas safety protection system, burning branch pipe one end intercommunication combustible gas house steward, and other end jet sprays combustible gas towards the sinter bed and forms the combustible gas region, certainly the sinter bed upwards is equipped with in proper order and prevents poisoning alarm, flame detector and prevents the alarm of escaping. The utility model discloses a spout the combustible gas and add all-round three-dimensional monitoring of phenomena such as regional top escape, both sides leak, inside explosion catches fire, has prevented that combustible gas from appearing a large amount of escapes, the condition such as leak and violent explosion takes place, has avoided the poisoning of personnel, has stifled, casualties and the destruction to equipment, factory building effectively to spout the safety protection problem that adds combustible gas on the sintering charge level.
Description
Technical Field
The utility model relates to an iron ore sintering technical field, concretely relates to spout the safety protection system who adds combustible gas to the charge level in iron ore sintering process.
Background
The combustible gas fuel is sprayed on the surface of the sinter bed, so that the yield and the drum strength of the sinter can be improved, the sintering solid fuel consumption is reduced, and the discharge amount of carbon dioxide, sulfur dioxide and nitrogen oxide can be reduced. However, combustible gases (such as natural gas, coke oven gas and the like) sprayed on the sintering charge contain a large amount of combustible, explosive and toxic gases such as methane, hydrogen, carbon monoxide, hydrocarbon compounds and the like. Although not as toxic as carbon monoxide, methane and hydrogen can suffocate and even die after reaching a certain level in the air. Methane and hydrogen are also used as fuels, and can cause injuries and deaths due to explosion. Although these two gases are lighter than air and tend to diverge, they reach a certain proportion when they accumulate in an enclosed environment such as a house, triggering a powerful explosion.
Therefore, in order to ensure the safety of personnel and equipment when the combustible gas has abnormal conditions such as escape, leakage, explosion, ignition and the like, a safety protection system for spraying the combustible gas on the sintering charge level is required to be designed, so that the gas fuel is safely sprayed on the surface of the charge level of the sintering machine.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that realize a sintering charge level and spout and add combustible gas safety protection system, the system has ensured the safety of the person and equipment when combustible gas takes place to escape, leak, explode, catches fire etc. abnormal conditions comprehensively.
In order to realize the purpose, the utility model discloses a technical scheme be: a combustible gas safety protection system is sprayed on a sintering charge level, one end of a combustion branch pipe is communicated with a combustible gas main pipe, a jet orifice at the other end sprays combustible gas towards a sintering charge layer to form a combustible gas area, an anti-poisoning alarm, a flame detector and an anti-escape alarm are sequentially arranged on the sintering charge layer, the anti-poisoning alarm surrounds the edge of the combustible gas area to form an anti-poisoning alarm group, the flame detection alarm surrounds the edge of the combustible gas area to form an anti-flame detection alarm group, and the anti-escape alarm surrounds the edge of the combustible gas area to form an anti-escape alarm group.
Be equipped with the quick action emergency valve on the burning branch pipe, every prevent that poisoning alarm, flame detector and anti-escape alarm all pass through signal line connection control system's input, the control system output passes through the signal line and connects the quick action emergency valve.
When the combustible gas is natural gas, the escape-proof alarm and the poisoning-proof alarm are both methane alarms, and when the combustible gas is coke oven gas, the escape-proof alarm is a hydrogen alarm; and when the combustible gas is blast furnace gas, the escape-preventing alarm is a carbon monoxide alarm.
When the combustible gas is natural gas, the poisoning prevention alarm is a methane alarm; when the combustible gas is coke oven gas or blast furnace gas, the poisoning prevention alarm is a carbon monoxide alarm.
Each poisoning-prevention alarm is fixedly arranged at a position with a height of 0.5-2 m away from a sinter bed
The detecting head of each flame detector faces to the jet orifice of the combustion branch pipe.
The utility model discloses a spout the combustible gas and add all-round three-dimensional monitoring of phenomena such as regional top escape, both sides leak, inside explosion catches fire, has prevented that combustible gas from appearing a large amount of escapes, the condition such as leak and violent explosion takes place, has avoided the poisoning of personnel, has stifled, casualties and the destruction to equipment, factory building effectively to spout the safety protection problem that adds combustible gas on the sintering charge level.
Drawings
The following brief descriptions of the contents expressed by each figure and the marks in the figures in the specification of the present invention are as follows:
FIG. 1 is a front view of an embodiment of the system of the present invention;
FIG. 2 is a top view of an embodiment of the system of the present invention;
the labels in the above figures are: 10. an anti-escape alarm group; 20. an anti-poisoning alarm group; 30. a flame detection group; 40. an emergency shut-off valve; 50. a control system; 11. an escape-proof alarm; 21. an anti-poisoning alarm; 31. a flame detector.
Detailed Description
The following description of the embodiments with reference to the drawings is provided to explain the embodiments of the present invention in further detail, such as the shapes and structures of the components, the mutual positions and connection relationships among the components, the functions and working principles of the components, the manufacturing process, and the operation and use method, etc., so as to help those skilled in the art to understand the concept and technical solutions of the present invention more completely, accurately and deeply.
As shown in fig. 1-2, a safety protection system for spraying combustible gas on a sintering charge level comprises an escape-proof alarm group 10, a poisoning-proof alarm group 20, a flame detection group 30, an emergency cut-off valve 40 and a control system 50.
The anti-escape alarm group 10 comprises 4 anti-escape alarms 11, and when natural gas is sprayed, the anti-escape alarms 11 are methane alarms; when the coke oven gas is sprayed, the plurality of escape-proof alarms 11 are hydrogen alarms; when blast furnace gas is sprayed, the plurality of escape-proof alarms 11 are carbon monoxide alarms. The plurality of anti-escape alarms 11 are fixedly arranged at four corners or side lines above the combustible gas spraying area, and preferably 4 anti-escape alarms 11 are respectively arranged at four corners above the coke oven gas spraying area.
The poisoning prevention alarm group 20 comprises 4 poisoning prevention alarms 21, and the poisoning prevention alarms 21 adopt a carbon monoxide alarm; 4 anti-poisoning alarms 21 are arranged on the side lines of two sides of the coke oven gas spraying area, preferably at a height of 1.8m from the ground. When natural gas is sprayed, the plurality of poisoning prevention alarms 21 are methane alarms; when the coke oven gas or the blast furnace gas is sprayed, the poisoning prevention alarms 21 are carbon monoxide alarms.
The flame detection group 30 comprises 2 flame detectors 31, the flame detectors 31 adopt ultraviolet flame detectors and are arranged at the edge of a coke oven gas spraying area, and detection ports of the flame detectors are aligned with spraying ports of a coke oven gas spraying device.
The control system 50 is used for receiving alarm signals sent by the anti-escape alarm group 10, the anti-poisoning alarm group 20 and the flame detector 30 and controlling the emergency cut-off valve 40.
The safety protection method based on the combustible gas spraying on the sintering charge surface comprises the following steps:
step 1.1, in the process of spraying the coke oven gas, detecting the hydrogen concentration above a spraying area by an anti-escape alarm set 10, and judging whether the coke oven gas escapes from the spraying area;
step 1.2, the anti-escape alarm 11 sends out an alarm signal to indicate that coke oven gas escapes from the upper part of the injection area, and the control system 50 controls the emergency stop valve 40 to be quickly closed after receiving the alarm signal to prevent malignant accidents.
Step 2.1, in the process of injecting the coke oven gas, detecting the concentration of carbon monoxide at two sides of an injection area by an anti-poisoning alarm group 20, and judging whether the coke oven gas leaks from two sides of the injection area;
and 2.2, the poisoning prevention alarm group 20 sends out an alarm signal to indicate that coke oven gas leaks from two sides of the injection area, and the control system 50 controls the emergency cut-off valve 40 to be quickly closed after receiving the alarm signal so as to prevent the occurrence of poisoning, suffocation and casualty accidents of people.
Step 3.1, in the process of injecting the coke oven gas, the flame detector 30 detects whether flame exists in a nozzle of the coke oven gas injection device, and judges whether the coke oven gas catches fire or deflagrates;
and 3.2, sending an alarm signal by the flame detector 30 to indicate that the coke oven gas is on fire, and controlling the quick closing of the emergency cut-off valve 40 after receiving the alarm signal by the control system 50.
The control system 50 executes step 1.1 to step 1.2, step 2.1 to step 2.2, and step 3.1 to step 3.2 at the same time.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (6)
1. The utility model provides a combustible gas safety protection system is spouted with to sintering charge level, burning branch pipe one end intercommunication combustible gas house steward, other end jet orifice jet combustible gas towards the sinter bed and forms combustible gas region, its characterized in that: from sinter bed upwards is equipped with in proper order and prevents poisoning alarm, flame detector and anti-escape alarm, and is a plurality of prevent that poisoning alarm centers on the regional edge of combustible gas sets up to constitute and prevents poisoning alarm group, and is a plurality of flame detection alarm centers on the regional edge of combustible gas sets up to constitute and prevents flame detection alarm group, and is a plurality of prevent escaping alarm centers on the regional edge of combustible gas sets up to constitute anti-escape alarm group.
2. The safety protection system for spraying combustible gas on a sintering charge level according to claim 1, characterized in that: be equipped with the quick action emergency valve on the burning branch pipe, every prevent that poisoning alarm, flame detector and anti-escape alarm all pass through signal line connection control system's input, the control system output passes through the signal line and connects the quick action emergency valve.
3. The safety protection system for spraying combustible gas on a sintering charge level according to claim 1 or 2, characterized in that: when the combustible gas is natural gas, the escape-proof alarm and the poisoning-proof alarm are both methane alarms, and when the combustible gas is coke oven gas, the escape-proof alarm is a hydrogen alarm; and when the combustible gas is blast furnace gas, the escape-preventing alarm is a carbon monoxide alarm.
4. The safety protection system for spraying combustible gas on a sintering charge level according to claim 3, characterized in that: when the combustible gas is natural gas, the poisoning prevention alarm is a methane alarm; when the combustible gas is coke oven gas or blast furnace gas, the poisoning prevention alarm is a carbon monoxide alarm.
5. The safety protection system for spraying combustible gas on a sintering charge level according to claim 4, characterized in that: each poisoning-prevention alarm is fixedly installed at a position which is 0.5-2 m away from the sinter bed.
6. The safety protection system for spraying combustible gas on a sintering charge level according to claim 5, characterized in that: the detecting head of each flame detector faces to the jet orifice of the combustion branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921227019.4U CN210367841U (en) | 2019-07-31 | 2019-07-31 | Safety protection system for spraying combustible gas on sintering charge level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921227019.4U CN210367841U (en) | 2019-07-31 | 2019-07-31 | Safety protection system for spraying combustible gas on sintering charge level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210367841U true CN210367841U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921227019.4U Active CN210367841U (en) | 2019-07-31 | 2019-07-31 | Safety protection system for spraying combustible gas on sintering charge level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210367841U (en) |
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2019
- 2019-07-31 CN CN201921227019.4U patent/CN210367841U/en active Active
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