CN203546065U

CN203546065U - Audio type converter splashing prediction system

Info

Publication number: CN203546065U
Application number: CN201320742026.4U
Authority: CN
Inventors: 田陆; 何涛焘; 文华北; 冯正金
Original assignee: Hunan Ramon Science and Technology Co Ltd
Current assignee: Hunan Ramon Science and Technology Co Ltd
Priority date: 2013-11-22
Filing date: 2013-11-22
Publication date: 2014-04-16
Anticipated expiration: 2023-11-22

Abstract

The utility model belongs to the field of a converter steelmaking anti-splashing prediction system, and particularly discloses an audio type converter splashing prediction system. The audio type converter splashing prediction system comprises a sound sensor, an audio test module, an industrial personal computer, and a system data storage module which are sequentially connected. The sound sensor is an array sound collecting unit formed by a plurality of electret microphones, and the sensitivity of sound collecting is improved. The audio test module comprises a sound collecting module, a sound amplification conditioning module, an analog quantity acquisition and processing module, and a master control module which are sequentially connected. The master control module is also connected with a display module, a communication module, and a system power module. The audio type converter splashing prediction system is sensitive in sound collecting and wide in audio signal coverage, effectively reduces on-site smoke and ash by the adoption of an annular intelligent blowing structure, improves the accuracy of collected sound, reduces equipment maintenance work, and allows users to select the installation ways flexibly according to the operating environment.

Description

A kind of audio frequency formula converter splash forecast system

Technical field

The utility model belongs to converter steelmaking antispray forecast system field, specifically discloses a kind of audio frequency formula converter splash forecast system.

Background technology

The advantages such as production efficiency is high because having, starting material adaptability is good in converter steelmaking, it is little to invest, instant effect, are widely used in China's smelting iron and steel industry.Converter smelting is mainly that molten iron and steel scrap are packed in stove, then adds slag making auxiliary material, then by oxygen rifle to the smelting that is blown into oxygen in stove and completes molten steel.Due to the singularity of converter structure, during production, in relative sealed state and convertor steelmaking process, be a complicated polynary heterogeneous high-temperature reaction process, operator are when actual oxygen blast, oxygen blast low strength can cause this stove molten iron to be fully oxidized, and the higher meeting of oxygen blast intensity causes peroxidation and splash.During oxygen blast, there is ANOMALOUS VARIATIONS, operator are difficult to make accurate judgement in the very first time, often cause liquid steel slag splash phenomenon, cannot guarantee on the one hand the quality of this stove molten steel, cause on the other hand the interior metal of stove along with slag splashes outside stove, reduce tap, caused converter splash accident.Splash slag out also can cause serious threat to flushing and casting personnel's personnel safety and steelmaking equipment.

At present, domestic splash forecast system is generally to adopt to obtain converter smelting noise signal and carry out splash forecast, and noise mainly comprises: the noise 1. producing when the gasdynamics noise of high speed oxygen air-flow thigh and shocked iron liquid thereof, slag liquid and solid phase particles; 2. carbon monoxide gas follicular rupture and the pneumatic noise while overflowing; 3. the frictional noise in smelting process, wherein high speed oxygen air-flow thigh is the main source of blowing noise.This noise intensity when not having liquid slag to cover reaches maximum, blows and seriously return while doing as opened.After foamy slag forms, cover on oxygen lance blow head, can absorption of noise.Slag blanket is thicker, the foamy slag height of sound absorption is larger, just lower from the noise intensity spreading out of in stove.Get rid of the interference of neighbourhood noise, by the noise intensity that blows in detection stove, just can indirectly reflect the thickness (changing slag situation) of the inner foam slag of coming out of the stove, and then help site operation personnel to judge accordingly, operate.

Patent CN2852131Y and CN102559990 adopt in this way to forecast, but along with the variation of furnace life, lining thickness etc., sound characteristic frequency range there will be skew, cause equipment in use for some time, forecast accuracy reduces, debugging work also can be very complicated, and this is the key factor that affects this technology maturation application.In addition, smelt on-the-spot a large amount of flue dust noise signal collection accuracy is brought to disadvantageous effect.

In sum, provide a kind of noise signal collection accurately and reliably, validity is high, characteristic spectra broad covered area, the audio frequency formula converter splash forecast system that can adapt to on-the-spot environment for use becomes those skilled in the art needs the problem of solution badly.

Summary of the invention

For solving above-mentioned one or more technical problem, technical scheme of the present invention is that a kind of audio frequency formula converter splash forecast system, comprises the sound transducer, audio detection module, industrial computer, the data memory module that connect successively; Described audio detection module comprises that the sound collection module, the sound that connect successively amplify conditioning module, analog acquisition processing module, main control module, and described main control module is also connected with display module, communication module, also comprises system power supply module.

Preferably, described sound transducer is to adopt the array of multiple electret microphone compositions to adopt sound unit.

Preferably, described array is equilateral triangle array or a middle surrounding circulating type array.

Preferably, described sound transducer is installed in the flue of petticoat pipe top or in firebreak open holes.

Preferably, described sound transducer outside is provided with protection sleeve, between described sleeve and described sound transducer, is evenly equipped with scavenging pipeline, and described scavenging pipeline is connected with described audio detection module.

beneficial effect

Compared with prior art, the application has adopted multiband audio detection module, can detect the sound signal of multiple wave bands (20Hz-20kHz) simultaneously, covers converter comprehensively and with furnace life, furnace lining, changes the sound frequency range variation producing; Sound transducer adopts multiple electret microphone composition array to adopt sound unit, has greatly improved collection sensitivity; At sound transducer outer setting protection sleeve, in conjunction with water cooling plant, guarantee that sound transducer is operated in suitable temperature; By the annular blow device of audio detection module controls, can effectively reduce on-the-spot cigarette ash to gathering the impact of accuracy, reduce maintenance of the equipment workload.

Accompanying drawing explanation

Accompanying drawing 1 is the utility model structural representation;

Accompanying drawing 2 is the utility model audio detection modular structure schematic diagram;

Accompanying drawing 3 is adopted sound modular construction schematic diagram for the utility model array;

Accompanying drawing 4 is that the utility model annular purges schematic diagram;

Accompanying drawing 5 is the utility model mounting means schematic diagram.

Wherein: 1 water outlet, 2 scavenging ducts, 3 water inlet pipes, 4 protection sleeves, 5 strainers, 6 magnetic valves, 7 cooling water tanks, 8 firebreaks, 9 sound transducers, 10 petticoat pipes, 11 converters.

Specific embodiment

Below in conjunction with specific embodiment, structure of the present utility model and principle are described further, a kind of audio frequency formula converter splash forecast system as described in Figure 1, comprises the sound transducer, audio detection module, industrial computer, the data memory module that connect successively.As described in accompanying drawing 2, wherein said audio detection module comprises that the sound collection module, the sound that connect successively amplify conditioning module, analog acquisition processing module, main control module, described main control module is also connected with display module, communication module, and being also included as each module provides the system power supply module of working power.Wherein, sound collection module, for receiving the sound signal of sound transducer, and transfers to follow-up sound amplification conditioning module; Sound amplifies conditioning module, for the signal of sound transducer is amplified and nursed one's health, so that long-distance transmissions; Analog acquisition processing module, realizes multiband filtering, amplification, the AC-DC conversion function of voice signal; Main control module, the each module work of drive system, the conversion, calculating, storage, the exchange that realize between analog quantity and digital quantity detect information, complete the communication of upper and lower computer; Communication module comprises, for the RS485 communication unit of upper machine communication with for driving magnetic valve 6 to realize the status unit that intelligence purges; Display control module, for showing current multi-frequency range measurement value, and the sensitivity of regulation system.As shown in Figure 3, array is adopted sound unit and is adopted equilateral triangle array or a middle surrounding circulating type array, according to the height of revolving furnace fume hood 10, sound transducer 9, selects with the distance of fire door 11, can improve the sensitivity of sound collection.As shown in Figure 4, by the water cooling plant of protection sleeve 4 and bottom in and top out, guarantee that sound transducer 9 is in suitable working temperature, between protection sleeve 4 and sound transducer 9, be provided with scavenging pipeline 2, described scavenging pipeline 2 is through filter 5, after magnetic valve 6 flexible pipe transition connect, one is divided into four or three, evenly be circular layout, accept the steering order of described audio detection module, after finishing, every stove smelting according to the time of setting, system is purged, (the former purges noise and easily system is produced and disturbed to avoid in prior art the uninterrupted deficiency purging continuously or regularly manually purge, the latter has strengthened the maintenance of system), can reduce greatly on-the-spot cigarette ash to gathering the impact of accuracy, reduce maintenance of the equipment intensity and cycle.As shown in Figure 5, if cover falls in steelworks, produce, sound transducer 9, water-cooled protection structure are installed in the flue of petticoat pipe 10 tops; If steelworks does not adopt, fall cover production, on firebreak 8, boring is installed.Two kinds of mounting means are selected flexibly, adapt to site environment demand.

Claims

1. an audio frequency formula converter splash forecast system, is characterized in that: comprise the sound transducer, audio detection module, industrial computer, the data memory module that connect successively; Described audio detection module comprises that the sound collection module, the sound that connect successively amplify conditioning module, analog acquisition processing module, main control module, and described main control module is also connected with display module, communication module, also comprises system power supply module.

2. a kind of audio frequency formula converter splash forecast system according to claim 1, is characterized in that: described sound transducer is to adopt the array of multiple electret microphones compositions to adopt sound unit.

3. a kind of audio frequency formula converter splash forecast system according to claim 2, is characterized in that: described array is equilateral triangle array or a middle surrounding circulating type array.

4. according to a kind of audio frequency formula converter splash forecast system described in claim 1 or 2, it is characterized in that: described sound transducer is installed in the flue above petticoat pipe or in firebreak open holes.

5. a kind of audio frequency formula converter splash forecast system according to claim 4; it is characterized in that: described sound transducer outside is provided with protection sleeve; between described sleeve and described sound transducer, be evenly equipped with scavenging pipeline, described scavenging pipeline is connected with described audio detection module.