CN216052712U - Safety control system of hydrogen reduction steel belt furnace - Google Patents
Safety control system of hydrogen reduction steel belt furnace Download PDFInfo
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- CN216052712U CN216052712U CN202122475457.6U CN202122475457U CN216052712U CN 216052712 U CN216052712 U CN 216052712U CN 202122475457 U CN202122475457 U CN 202122475457U CN 216052712 U CN216052712 U CN 216052712U
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Abstract
The utility model discloses a safety control system of a hydrogen reduction steel strip furnace, which comprises a hydrogen flow monitoring system, a furnace tail hearth oxygen content monitoring system, a nitrogen pressure monitoring system, an automatic control system and an operation display system, wherein the operation display system is electrically connected with the automatic control system. The safety control system and the safety control method for the hydrogen reduction steel strip furnace can well ensure the safe and stable operation of the steel strip furnace, and particularly, equipment can be switched into a nitrogen replacement state in time when power failure suddenly occurs or hydrogen and nitrogen are not supplied enough, so that the safety of the equipment and operators is ensured. Meanwhile, when technological parameters such as hydrogen flow and nitrogen flow fluctuate, an operator can be reminded to adjust and check the running state of the equipment in time.
Description
Technical Field
The utility model relates to a steel strip furnace production device, in particular to a safety control system of a hydrogen reduction steel strip furnace.
Background
The steel strip furnace generally adopts hydrogen as reducing atmosphere, the explosion limit of the hydrogen is 4.0-75.6%, when a small amount of air permeates into a hearth, permeated oxygen can be mixed with the hydrogen in the hearth to form an explosion condition, and safety accidents are easy to happen. In the prior art, the furnace front and the furnace tail of the steel strip furnace can not be completely sealed due to the running and discharging of the steel strip, an inlet and outlet sealing mechanism is generally adopted for nitrogen sealing, the sealing mechanism adopts a combined nitrogen curtain multiple sealing mode, and nitrogen is filled into the sealing mechanism to form micro positive pressure during working so as to prevent air outside the furnace from entering the furnace. However, the sealing air curtain high-temperature silica gel sheet is easy to age after being used for a long time, factors such as unstable nitrogen and hydrogen supply and the like easily cause air entering a hearth, the oxygen content exceeds the standard, explosion accidents occur, and equipment and personnel damage is caused.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a safety control system of a hydrogen reduction steel strip furnace, which specifically comprises the following contents:
a safety control system of a hydrogen reduction steel strip furnace comprises a hydrogen flow monitoring system, a furnace tail hearth oxygen content monitoring system, a nitrogen pressure monitoring system, an alarm device, an automatic control system and an operation display system, wherein the hydrogen flow monitoring system comprises a hydrogen input valve and a hydrogen flowmeter which are arranged on a hydrogen input pipeline; the furnace tail hearth oxygen content monitoring system comprises an oxygen content detector arranged in a furnace tail hearth; the nitrogen pressure detection system comprises a nitrogen input valve and a nitrogen pressure detector which are arranged on a nitrogen input pipeline; the automatic control system is respectively in signal connection with the hydrogen input valve, the hydrogen flowmeter, the oxygen content detector, the nitrogen input valve, the nitrogen pressure detector and the alarm device; the operation display system is electrically connected with the automatic control system.
Specifically, the alarm device is a sound and light alarm device.
Specifically, the hydrogen input valve and the nitrogen input valve are electromagnetic valves.
Specifically, the hydrogen input valve is a normally closed solenoid valve, and the nitrogen input valve is a normally open solenoid valve.
The utility model has the beneficial effects that: the safety control system of the hydrogen reduction steel belt furnace can well ensure the safe and stable operation of the steel belt furnace, and particularly, when power failure occurs suddenly or hydrogen and nitrogen are not supplied enough, equipment can be switched into a nitrogen replacement state in time, so that the safety of the equipment and operators is ensured. Meanwhile, when technological parameters such as hydrogen flow and nitrogen flow fluctuate, an operator can be reminded to adjust and check the running state of the equipment in time.
Drawings
FIG. 1 is a schematic view of a safety control system for a hydrogen reduction steel strip furnace according to the present disclosure;
fig. 2 is a flowchart of a safety control method disclosed in the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments shown below do not limit the scope of the utility model described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the utility model described in the claims.
Referring to the attached figure 1, the safety control system of the hydrogen reduction steel strip furnace comprises a hydrogen flow monitoring system, a furnace tail hearth oxygen content monitoring system, a nitrogen pressure monitoring system, an alarm device, an automatic control system and an operation display system, wherein the hydrogen flow monitoring system comprises a hydrogen input valve and a hydrogen flowmeter which are arranged on a hydrogen input pipeline; the furnace tail hearth oxygen content monitoring system comprises an oxygen content detector arranged in a furnace tail hearth; the nitrogen pressure detection system comprises a nitrogen input valve and a nitrogen pressure detector which are arranged on a nitrogen input pipeline; the automatic control system is respectively in signal connection with the hydrogen input valve, the hydrogen flowmeter, the oxygen content detector, the nitrogen input valve, the nitrogen pressure detector and the alarm device; the operation display system is electrically connected with the automatic control system.
In one embodiment of the utility model, the alarm device is an audible and visual alarm device.
In one embodiment of the utility model, the hydrogen input valve and the nitrogen input valve are solenoid valves.
In one embodiment of the present invention, the hydrogen input valve is a normally closed type solenoid valve, and the nitrogen input valve is a normally open type solenoid valve.
Referring to fig. 2, a method for performing safety control using a safety system for a hydrogen-reducing steel strip furnace according to the present invention includes:
(1) setting parameters: before the steel strip furnace starts to work, safety parameters are input into an automatic control system through an operation display system, wherein the safety parameters comprise: a first hydrogen flow set value, a second hydrogen flow set value, a first oxygen content set value, a second oxygen content set value and a first nitrogen pressure set value;
(2) monitoring hydrogen flow: in the process of the steel strip furnace, when the hydrogen flow meter detects that the hydrogen flow is lower than a first hydrogen flow set value, the hydrogen flow meter transmits flow information to an automatic control system, and the automatic control system controls an alarm device to send out a first alarm signal to remind an operator to perform adjustment processing; when the hydrogen flow is continuously reduced and is lower than a second hydrogen flow set value, the hydrogen flow meter transmits flow information to the automatic control system, the automatic control system controls the hydrogen input valve to be automatically closed and controls the nitrogen input valve to be automatically opened at the same time, so that the hearth is filled with a large amount of nitrogen, and the inside of the hearth enters a nitrogen filling replacement state;
(3) monitoring the oxygen content in the furnace tail hearth: in the process of the operation overtravel of the steel strip furnace, when the oxygen content detector detects that the oxygen content is higher than a first oxygen content set value, the oxygen content detector transmits oxygen content information to the automatic control system, and the automatic control system controls the alarm device to send out a second alarm signal to remind an operator to carry out adjustment treatment; when the oxygen content continuously rises and is higher than a second oxygen content set value, the oxygen content detector transmits oxygen content information to the automatic control system, the automatic control system controls the hydrogen input valve to be automatically closed, and simultaneously controls the nitrogen input valve to be automatically opened, so that a large amount of nitrogen is filled into the hearth, and the hearth enters a nitrogen filling replacement state;
(4) monitoring the nitrogen pressure: in the process of the operation of the steel strip furnace, when the nitrogen pressure detector detects that the nitrogen pressure is lower than a first nitrogen pressure set value, the nitrogen pressure detector transmits a nitrogen pressure signal to the automatic control system, and the automatic control system controls the alarm device to send a third alarm signal to remind an operator to perform adjustment processing; if the nitrogen pressure is continuously low, the normal state cannot be recovered temporarily, and workshop operators can open the emergency nitrogen storage tank to perform nitrogen supplement and furnace extinguishing operation, so that equipment maintenance work is performed after the safety of the equipment is ensured;
(5) emergency treatment: in the over-stroke of the steel strip furnace, the hydrogen input valve can be automatically closed when the power is suddenly cut off; the nitrogen input valve can be automatically opened, and nitrogen is introduced into the furnace for replacement, so that the safety of equipment is ensured.
In one embodiment of the present invention, the first hydrogen flow rate set point is 50m3H, the second hydrogen flow rate set value is 30m3/h。
In one embodiment of the utility model, the first oxygen content set point is 0.8% and the second oxygen content set point is 2%.
In one embodiment of the utility model, the first nitrogen pressure set point is 0.3 MPa.
In one embodiment of the utility model, the alarm devices are all acousto-optic alarm devices.
In one embodiment of the present invention, the hydrogen input valve is a normally closed electromagnetic valve, and the valve is opened when the electromagnetic valve is powered on and closed when the electromagnetic valve is powered off; the nitrogen input valve is a normally open type electromagnetic valve, and the valve is closed when the normally open type electromagnetic valve is electrified and closed when the nitrogen input valve is powered off.
In the description of the present application, it is to be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "disposed of" and "in communication with" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The safety control system of the hydrogen reduction steel strip furnace is characterized by comprising a hydrogen flow monitoring system, a furnace tail hearth oxygen content monitoring system, a nitrogen pressure monitoring system, an alarm device, an automatic control system and an operation display system, wherein the hydrogen flow monitoring system comprises a hydrogen input valve and a hydrogen flowmeter which are arranged on a hydrogen input pipeline; the furnace tail hearth oxygen content monitoring system comprises an oxygen content detector arranged in a furnace tail hearth; the nitrogen pressure detection system comprises a nitrogen input valve and a nitrogen pressure detector which are arranged on a nitrogen input pipeline; the automatic control system is respectively in signal connection with the hydrogen input valve, the hydrogen flowmeter, the oxygen content detector, the nitrogen input valve, the nitrogen pressure detector and the alarm device; the operation display system is electrically connected with the automatic control system.
2. The safety control system for a hydrogen-reducing steel strip furnace as claimed in claim 1, wherein the alarm device is an audible and visual alarm device.
3. The safety control system for a hydrogen-reducing steel strip furnace according to any one of claims 1 to 2, wherein the hydrogen input valve and the nitrogen input valve are solenoid valves.
4. The safety control system for a hydrogen-reducing steel strip furnace according to claim 3, wherein the hydrogen input valve is a normally closed solenoid valve, and the nitrogen input valve is a normally open solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122475457.6U CN216052712U (en) | 2021-10-14 | 2021-10-14 | Safety control system of hydrogen reduction steel belt furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122475457.6U CN216052712U (en) | 2021-10-14 | 2021-10-14 | Safety control system of hydrogen reduction steel belt furnace |
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| Publication Number | Publication Date |
|---|---|
| CN216052712U true CN216052712U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122475457.6U Active CN216052712U (en) | 2021-10-14 | 2021-10-14 | Safety control system of hydrogen reduction steel belt furnace |
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| CN (1) | CN216052712U (en) |
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2021
- 2021-10-14 CN CN202122475457.6U patent/CN216052712U/en active Active
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