CN216081763U - Converter audio frequency detecting system - Google Patents

Abstract

The utility model belongs to the field of converter detection, and particularly relates to a converter audio detection system which comprises a converter and an audio detection device, wherein the audio detection device comprises a controller and at least two groups of pickup assemblies, each group of pickup assembly comprises a pickup pipe, a pickup sensor and a sounding sensor, the pickup sensor and the sounding sensor are arranged at one end in the pickup pipe, the pickup sensor and the sounding sensor of each group of pickup assembly are electrically connected with the controller, one end of the pickup pipe, which is far away from the pickup sensor and the sounding sensor, is arranged at an opening of the converter, the utility model judges the state of converter slagging by setting the pickup assembly, the pickup sensor in the pickup assembly is used for picking up converting noise generated in the converter, in addition, the sound collection pipe is judged to be smooth or blocked by setting the sounding sensor, the self-detection of equipment is realized, the converter slagging state can be simultaneously detected by setting the two groups of pickup assemblies, and whether the sound collecting pipe is blocked or not can be mutually detected, so that the detection and self-checking accuracy is improved.

Description

Converter audio frequency detecting system

Technical Field

The utility model belongs to the field of converter detection, and particularly relates to a converter audio detection system.

Background

The converter is the main equipment in the steelmaking process, and converter smelting is an important link for production and cost control of high-quality variety steel. Therefore, the on-line, effective and real-time monitoring of the converter is crucial to safe and efficient operation, but the temperature in the converter can reach 1700 ℃ when the converter works, the flame can reach 15m high, and the flame is accompanied with a large amount of flue gas dust.

Slagging is one of key operations of converter steelmaking, and harmful elements such as sulfur, phosphorus and the like in molten steel are effectively removed through slagging, so that the quality of the molten steel is improved. The slag liquid level is too low in the slagging process, which indicates that the proportion of solid-phase substances in the slag is increased and the proportion of liquid phase is reduced, namely, the slag is in a drying state, and the noise in the furnace is large and the frequency is high during the drying process; the situation of over-high slag liquid level can also occur to cause a splashing state, and the noise in the furnace is small and the frequency is low during splashing. In the blowing slagging process of converter steelmaking, splashing and re-drying should be avoided as much as possible, and especially serious splashing can bring about losses of equipment, personnel and environmental protection. Therefore, the height of the oxygen lance needs to be adjusted in time according to the slagging state, and splashing and drying returning are prevented.

In general, on-line detection of slag is judged by a skilled kiln worker through blowing noise emitted from a converter, but the working state of a person is unstable and is verified by external influences such as external noise and the shape of the converter; the audio converter state monitoring system identifies and records the sound emitted by the converter by mounting a pickup sensor at the furnace mouth accessory so as to judge the state of the converter slagging. Because the sound pickup pipe is close to the converter mouth, the temperature at the converter mouth is higher, and slag and dust are more, the sound pickup pipe is easy to slowly block, the sound pickup efficiency of the sound pickup sensor is easy to slowly change, and the system measurement deviation is caused by the faults.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a converter audio detection system with a self-checking function.

The converter comprises a converter and an audio detection device, wherein the audio detection device comprises a controller and at least two groups of pickup assemblies, each group of pickup assembly comprises a pickup tube, a pickup sensor and a sounding sensor, the pickup sensor and the sounding sensor are arranged at one end inside the pickup tube, the pickup sensor and the sounding sensor of each group of pickup assembly are electrically connected with the controller, and one end, away from the pickup sensor and the sounding sensor, of the pickup tube is arranged at an opening of the converter.

Furthermore, each group of the sound pickup pipes is consistent with the distance between the sound pickup pipes and the opening end surface of the converter.

Further, each group of sound pickup tubes is spaced from each other by less than 50 m.

Furthermore, the audio detection device further comprises a box body, the controller is arranged in the box body, one side, away from the converter, of the sound pickup pipe is fixedly connected with the box body, and the sound pickup sensor and the sound production sensor penetrate through the box body to be electrically connected with the controller.

The utility model also comprises a smoke hood arranged at the opening of the converter, and the smoke hood is provided with an opening for installing the sound pickup pipe.

Still further, an exhaust gas outlet of the hood is disposed away from the sound pickup pipe.

The utility model also comprises an oxygen lance which is coaxially arranged with the converter.

The converter slagging state detection device has the advantages that the sound pickup assembly is arranged, the sound pickup sensor in the sound pickup assembly is used for picking up blowing noise emitted in the converter to judge the converter slagging state, in addition, sound of fixed decibels and frequency is generated by the sound generation sensor, sound signals received by the sound pickup sensor when the sound collection pipe is in order are recorded as a basis, actual data of the sound generation sensor received by the sound pickup sensor are compared with the basis, the sound collection pipe can be judged to be in order or blocked, equipment self-detection is realized, two groups of sound pickup assemblies are arranged, the converter slagging state can be simultaneously detected, whether the sound collection pipe is blocked can be mutually detected, and the converter slagging state and the equipment self-detection accuracy are greatly improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 shows a different mounting of the sound collection tube;

fig. 4 shows a different mounting of the sound collecting tube.

In the figure, 1-converter; 2-oxygen lance; 3-smoke hood; 4-converting air; 5-molten steel; 6-furnace gas; 7-an exhaust gas outlet; 8, a first sound collecting pipe; 9-a second sound collecting pipe; 10-pickup sensor one; 11-a first sounding sensor; 12-pickup sensor two; 13-sounding sensor two.

Detailed Description

As shown in fig. 1-2, the present invention includes a converter 1 and an audio detection device, the audio detection device includes a controller and at least two groups of pickup assemblies, each group of pickup assembly includes a sound collecting pipe, and a pickup sensor and a sound sensor disposed at one end inside the sound collecting pipe, the pickup sensor and the sound sensor of each group of pickup assembly are electrically connected to the controller, and one end of the sound collecting pipe departing from the pickup sensor and the sound sensor is disposed at an opening of the converter 1.

The utility model judges the state of the slag melting of the converter 1 by arranging the pickup assembly, the pickup sensor in the pickup assembly is used for picking up the blowing noise generated in the converter 1, in addition, because the temperature at the furnace mouth is higher, and more slag and dust are generated, the slow blockage of the sound collecting pipe and the slow change of the pickup efficiency of the pickup sensor are easily caused, and the system measurement deviation is caused, the utility model can judge whether the sound collecting pipe is smooth or blocked by arranging the sound generating sensor to generate the sound with fixed decibel and frequency, recording the sound signal received by the pickup sensor when the sound collecting pipe is smooth as the basis, comparing the actual data received by the pickup sensor with the basis, and realizing the self-inspection of the equipment, can realize that two groups simultaneously detect the state of the slag melting of the converter 1 by arranging the two groups of pickup assemblies, and can also mutually detect whether the sound collecting pipe is blocked, greatly improving the slagging state of the converter 1 and the self-checking accuracy of the equipment.

Take two groups of pickup assemblies as an example, one group comprises a first sound collecting pipe 8, a first pickup sensor 10 and a first sounding sensor 11, and the other group comprises a second sound collecting pipe 9, a second pickup sensor 12 and a second sounding sensor 13. When the slagging state of the converter 1 is detected, the first sound pickup sensor 10 and the second sound pickup sensor 12 can be both opened or only one of the first sound pickup sensor and the second sound pickup sensor is opened, preferably both the first sound pickup sensor 10 and the second sound pickup sensor 12 are opened, when the difference between the noise data received by the first sound pickup sensor 10 and the noise data received by the second sound pickup sensor 12 is large, whether a sound collecting pipe is blocked or not can be judged through self-checking, in the self-checking process, the sound generated by the first sound generation sensor 11 is received by the first sound pickup sensor 10, and the sound generated by the first sound generation sensor 11 can be received by the second sound pickup sensor 12; the sound of the second sounding sensor 13 is received through the second pickup sensor 12, or the sound of the second sounding sensor 13 is received through the first pickup sensor 10, so that multi-azimuth and multi-angle equipment self-checking is realized, and the controller controls the work of each sounding sensor and the pickup sensor and analyzes the data of the sounding sensors according to the requirement.

Specifically, the amplitude of an electric signal received by a pickup sensor in an initial (system completely normal) state is recorded; then, recording the amplitude of the electric signal received by the pickup sensor during self-checking; the deviation of the two is beyond the range, which proves that the system has problems;

and the fault position is roughly judged next, and because two sets of sound production sensors and sound pickup sensors are installed, the two sets of system self-checking are carried out through two same sound collecting pipes, namely, the paths are the same, and the difference or the ratio is calculated through a numbering formula, so that whether the sound collecting pipe is blocked or the sound pickup sensor or the sound emission sensor is in fault can be judged.

Under the condition that the sound collecting pipe, the sound production sensor and the pickup sensor are all normal, the controller sends an electric signal with preset amplitude and frequency to the first sound production sensor 11, then receives and analyzes the electric signal from the second pickup sensor 12, and records the ratio 1 of the amplitude of the transmitted electric signal to the amplitude of the received electric signal; the controller sends an electric signal with preset amplitude and frequency to the second sound sensor 13, then receives and analyzes the electric signal from the first sound sensor 10, and records the ratio 2 of the amplitude of the transmitted electric signal to the amplitude of the received electric signal.

When the equipment is self-checked, the controller sends an electric signal with preset amplitude and frequency to the first sound production sensor 11, then receives and analyzes the electric signal from the second pickup sensor 12, and records the amplitude ratio 3 of the emitted electric signal to the received electric signal. The controller sends an electric signal with preset amplitude and frequency to the second sound sensor 13, then receives and analyzes the electric signal from the first sound sensor 10, and records the amplitude ratio 4 of the transmitted electric signal to the received electric signal.

The ratio of 3 to 4/1 to 2 is less than the threshold value a, and the system works normally;

the ratio of 3 to 4/1 to 2 is more than or equal to the threshold b, and the system works abnormally;

when the system works abnormally, the ratio is 3-4, the threshold value b is less than, and the sound collecting pipe is blocked;

when the system works abnormally, the ratio 3-4 is larger than or equal to the threshold b, and the pickup sensor or the sound emitting device breaks down.

The general threshold value a is 1.5; the threshold b is 2.

The distance between each group of sound collecting pipes and the opening end face of the converter 1 is consistent, and the fact that actual noise data in the converter 1 detected by each group of pickup assemblies is consistent is guaranteed.

Every group collection sound pipe mutual interval is less than 50m, guarantees that pickup sensor can receive the sound that sounding sensor sent.

In addition, as shown in fig. 2-4, at least 2 sound collecting pipes can be installed in parallel, opposite emission, staggered manner, and the number of the sound collecting pipes is determined according to the collecting requirement.

The audio detection device further comprises a box body, the controller is arranged in the box body, one side, away from the converter 1, of the sound collection pipe is fixedly connected with the box body, the sound collection sensor and the sound production sensor penetrate through the box body to be electrically connected with the controller, the controller part is isolated from a severe environment in the arrangement mode, and the service life of the audio detection device is effectively prolonged.

The utility model also comprises a smoke hood 3 arranged at the opening of the converter 1, the smoke hood 3 is provided with an opening for installing a sound collecting pipe, and the smoke hood 3 is arranged, so that the influence of external noise is avoided as much as possible by the audio detection device while the waste gas of the converter 1 is effectively collected and discharged, the accuracy of noise detection in the converter 1 is improved, and the accuracy of judging the slagging state of the converter 1 is improved.

The waste gas outlet 7 of the smoke hood 3 deviates from the sound collecting pipe, so that the influence of the waste gas 6 on the audio detection device is effectively reduced.

The utility model also comprises an oxygen lance 2 which is coaxial with the converter 1, and the oxygen lance 2 sprays blowing gas to blow molten steel 5 in the converter 1.

Claims (7)

1. The utility model provides a converter audio frequency detecting system, characterized by, includes converter (1) and audio frequency detection device, audio frequency detection device includes controller and at least two sets of pickup subassemblies, and every group pickup subassembly all includes a collection sound pipe and sets up pickup sensor and the sound production sensor in the inside one end of collection sound pipe, and pickup sensor and the sound production sensor of every group pickup subassembly all are connected with the controller electricity, and the collection sound pipe deviates from pickup sensor and sound production sensor's one end setting at converter (1) opening part.

2. The converter audio detection system of claim 1, characterized in that each group of sound collecting pipes is at a distance from the open end face of the converter (1).

3. The converter audio detection system of claim 2 wherein each set of sound collection tubes are spaced less than 50m apart from each other.

4. The converter audio detection system of any one of claims 1 to 3, characterized in that the audio detection device further comprises a box, the controller is disposed in the box, one side of the sound collection tube facing away from the converter (1) is fixedly connected with the box, and the sound pickup sensor and the sound production sensor penetrate through the box and are electrically connected with the controller.

5. A converter audio detection system according to any one of claims 1 to 3, characterized by further comprising a smoke hood (3) arranged at an opening of the converter (1), wherein the smoke hood (3) is provided with an opening for installing a sound collecting pipe.

6. The converter audio detection system according to claim 5, characterized in that the exhaust gas outlet (7) of the hood (3) is arranged facing away from the sound collecting duct.

7. The converter audio detection system according to claim 1, further comprising an oxygen lance (2) disposed coaxially with the converter (1).

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