Converter blowing pickup protection device and noise acquisition system thereof

Abstract

The converter blowing pickup protection device comprises an outer sleeve, the outer sleeve is used for penetrating through a fire barrier, and at least part of the outer wall of the outer sleeve is provided with a cold water jacket; the inner sleeve is fixedly connected to the center position of the inner side of the outer sleeve in the height direction, and an inner cavity of the inner sleeve is used for containing a pickup; a horn-shaped sound receiving plate is arranged at one end of the inner sleeve, and a plurality of air passing holes are formed in the sound receiving plate; wherein a purging channel is formed between the inner sleeve and the outer sleeve, a purging pipe is arranged in the purging channel, and the purging pipe is located on the side, away from the sound receiving plate, of the inner sleeve. The device can better improve the working environment of the sound pick-up and reduce the influence of slag on the sound pick-up.

Description

Technical Field

[0001] The present application relates to metallurgical equipment, and in particular to a converter blowing pickup protection device and a noise collection system thereof. Background Art

[0002] During converter blowing, the supersonic oxygen flow from the oxygen lance impacts the molten pool, producing a strong noise. This noise is loudest during open blowing, absorbed and weakened as it passes through the foamy slag, and quietest when the furnace is filled with foamy slag and overflows the furnace mouth. Audio slagging technology uses the volume of in-furnace noise during converter smelting to determine the slag level (i.e., the quality of slagging). A sound pickup generates an audio curve trend display, providing a reference and guidance for oxygen lance height control. The sound pickup operates in the converter mouth area, a high-temperature and dusty environment where electronic components are susceptible to aging and damage. Therefore, a device was needed to protect the sound pickup's proper operation.

[0003] For example, a Chinese patent document (publication number CN 103983347 A) provides a converter blowing noise collection and protection device. This device includes a directional sound collection tube mounting cavity mounted on the converter sidewall fire barrier. The cavity is surrounded by a circulating water cooling chamber. A sound collector is placed within the cavity and connected to a dust purge guide pipe. The dust purge guide pipe is connected to a nitrogen filter via a solenoid valve. A sealing cap is installed at the end of the directional sound collection tube mounting cavity. This device reduces the ambient temperature of the sound collector and blows away some of the slag near the sound collector, reducing the cleaning burden on workers.

[0004] However, the sound collector of the above device is installed at the end of a narrow channel. When the converter splashes slag, some larger slag particles are easily stuck in the narrow channel or directly near the sound collector. It is difficult for the purge device to clear out the slag, causing the slag to interfere with the subsequent noise collection work of the sound collector.

[0005] For the above problems, no effective solutions are provided in the related art. Utility Model Content

[0006] In order to solve the problems that may exist in the related art, some embodiments of the present application provide a converter refining pickup protection device, an outer sleeve, the outer sleeve is used to pass through the fire wall, at least part of the outer wall of the outer sleeve is provided with a cold water jacket; an inner sleeve, fixedly connected to the center position of the inner side of the outer sleeve along the height direction, the inner cavity of the inner sleeve is used to place the pickup; one end of the inner sleeve is provided with a trumpet-shaped sound receiving plate, and the sound receiving plate is provided with a plurality of air holes; wherein, a purge channel is formed between the inner sleeve and the outer sleeve, a purge pipe is provided in the purge channel, and the purge pipe is located on the side of the inner sleeve away from the sound receiving plate.

[0007] Furthermore, the inner sleeve is fixedly connected to the outer sleeve through a sound receiving plate.

[0008] Furthermore, the purge pipe is located at the lower part of the purge channel.

[0009] Furthermore, the cold water jacket circumferentially surrounds the inner sleeve.

[0010] Furthermore, one end of the outer sleeve away from the sound receiving plate is detachably connected to a cover plate, and the purge pipe passes through the cover plate.

[0011] Furthermore, the inner sleeve is fixedly connected to the outer sleeve via a sound receiving plate, and / or: the outer wall of the inner sleeve is connected to the inner wall of the outer sleeve via a plurality of support beams, and the support beams are arranged along the circumference of the inner sleeve.

[0012] Furthermore, the ratio of the inner diameter of the inner sleeve to the inner diameter of the outer sleeve is 2:5 to 3:5, and the wall thickness of the inner sleeve is 2.5 mm to 3 mm.

[0013] Furthermore, the diameter of the air holes is 3.5 mm to 5.5 mm.

[0014] Furthermore, the purge pipe is connected to a solenoid valve, and the gas in the purge pipe is regularly switched on and off by the solenoid valve.

[0015] To achieve the above-mentioned purpose, the present application also provides a converter blowing noise collection system, comprising a fire barrier, a microphone and a converter blowing microphone protection device according to any of the above-mentioned schemes; the inner side of the fire barrier is used to place the converter; the two ends of the outer sleeve pass through the fire barrier; the microphone is located in the inner cavity of the inner sleeve; and the microphone is located on the outside of the fire barrier.

[0016] Furthermore, the length of the outer sleeve extending from the inner side of the fire retaining wall is 30 cm to 50 cm.

[0017] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0018] The converter blowing pickup protection device in the present application makes the dust and slag mainly blocked by the sound receiving plate, and falls to the bottom of the inner pipe, staggered with the pickup. Subsequently, the purge pipe blows air to the sound receiving plate, and the wind blows away the dust and slag blocked by the sound receiving plate through the through holes and the purge channel, thereby ensuring the cleanliness of the working environment of the pickup. At the same time, when the pickup is working, the horn-shaped sound receiving plate can concentrate the noise generated in the furnace during converter smelting to the port of the inner pipe, which is more convenient for the detection of the pickup. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a converter blowing sound pickup protection device, a noise collection system, and a converter according to an embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the matching structure of the inner sleeve and the sound receiving plate according to an embodiment of the present application;

[0022] Description of labels:

[0023] 100, outer sleeve; 110, purge channel; 120, cover plate;

[0024] 200, inner casing; 210, sound receiving board; 211, air hole; 220, support beam;

[0025] 300, cold water jacket; 310, water inlet pipe; 320, water outlet pipe;

[0026] 400, purge pipe;

[0027] 500, pickup;

[0028] 600. Firewall. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0030] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, for the purposes of describing the embodiments of the present application herein.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to having a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientations or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0032] like Figure 1 As shown, the present application provides a converter blowing pickup protection device, which includes an outer sleeve 100 and an inner sleeve 200 .

[0033] like Figure 1 As shown, the outer casing 100 is used to pass through the fire retaining wall 600, and a converter is placed inside the fire retaining wall 600. A cold water jacket 300 is provided on at least part of the outer wall of the outer casing 100.

[0034] Specifically, one end of the outer sleeve 100 faces the converter and is located inside the fire barrier 600 , and the other end faces outside the fire barrier 600 .

[0035] Specifically, such as Figure 1 As shown, the cold water jacket 300 is connected to a water inlet pipe 310 and a water outlet pipe 320 for circulating water to the cooling water tank to quickly remove heat near the pickup 500. Optionally, the opening of the water inlet pipe 310 faces downward, and the opening of the water outlet pipe 320 faces upward.

[0036] like Figure 1 、 2 As shown, the inner sleeve 200 is fixedly connected to the center position of the inner side of the outer sleeve 100 along the height direction. It is worth noting that there can be a small error in the center position. The inner cavity of the inner sleeve 200 is used to place the microphone 500; a horn-shaped sound receiving plate 210 is provided at one end of the inner sleeve 200, and the sound receiving plate 210 is provided with a plurality of air holes 211.

[0037] Specifically, the above-mentioned “horn shape” is specifically manifested in that the outer shape of the sound receiving plate 210 is similar to an internally through rotating structure, with one end having a larger diameter and the other end having a smaller diameter.

[0038] Among them, such as Figure 1As shown, a purge channel 110 is formed between the inner sleeve 200 and the outer sleeve 100, and a purge pipe 400 is arranged in the purge channel 110. Moreover, the purge pipe 400 is located on the side of the inner sleeve 200 away from the sound receiving plate 210, and the purge pipe 400 can blow air toward the air hole 211 of the sound receiving plate 210.

[0039] In this way, dust and slag are mainly blocked by the sound receiving plate 210 and fall to the bottom of the inner pipe, staggered with the microphone 500. Subsequently, the purge pipe 400 blows air to the sound receiving plate 210, and the wind blows away the dust and slag blocked by the sound receiving plate 210 through the through holes and the purge channel 110, ensuring the cleanliness of the working environment of the microphone 500. At the same time, when the microphone 500 is working, the horn-shaped sound receiving plate 210 can concentrate the noise generated in the furnace during converter smelting to the port of the inner pipe, which is more convenient for the detection of the microphone 500.

[0040] Preferably, Figure 1 As shown, the purge pipe 400 is located at the lower portion of the purge channel 110 , so that the purge pipe 400 can quickly blow away dust and slag accumulated below the sound receiving plate 210 .

[0041] Optionally, the gas supply source of the purge pipe 400 is nitrogen or compressed air.

[0042] Preferably, the purge tube 400 is connected to a solenoid valve, and the gas in the purge tube is regularly turned on and off by the solenoid valve. In detail, the solenoid valve allows the purge tube 400 to blow air when the microphone 500 is not working, thereby preventing the noise generated by the air discharged from the purge tube 400 from affecting the accuracy of the work of the microphone 500.

[0043] Specifically, if Figure 1 As shown, the cooling water jacket 300 circumferentially surrounds the inner sleeve 200 to sufficiently cool the pickup 500 in the inner sleeve 200 .

[0044] As an optional solution, the inner sleeve 200 is fixedly connected to the outer sleeve 100 via a sound receiving plate 210. Specifically, the larger end of the sound receiving plate 210 is connected to the inner wall of the outer sleeve 100, with the larger end facing the converter to concentrate the sound to the pickup 500. The smaller end of the sound receiving plate 210 is connected to the port of the inner sleeve 200.

[0045] Optionally, the outer wall of the inner sleeve 200 is connected to the inner wall of the outer sleeve 100 through a plurality of support beams 220 , and the support beams 220 are arranged along the circumference of the inner sleeve 200 .

[0046] Specifically, the end of the outer sleeve 100 away from the sound receiving plate 210 is detachably connected to the cover plate 120, and the purge pipe 400 passes through the cover plate 120. The user can remove the cover plate 120 from the outer sleeve 100, making it easier for the user to clean and maintain the converter blowing pickup protection device.

[0047] The ratio of the inner diameter of the inner sleeve 200 to the inner diameter of the outer sleeve 100 is 2:5 to 3:5. For example, the inner diameter of the inner sleeve 200 is 60 mm, the inner diameter of the outer sleeve 100 is 150 mm, and the wall thickness of the inner sleeve 200 is 2.5 mm to 3.5 mm, such as 2.8 mm, 3 mm or 3.2 mm. This design allows the purge channel 110 to be controlled within a suitable range, facilitates ventilation, and is not prone to slag jamming.

[0048] Preferably, the diameter of the air hole 211 is 3.5 mm to 5 mm, such as 3.8 mm, 4 mm, 4.5 mm or 4.8 mm. The purge hole is within this range and can adapt to the size of the slag, so it can better intercept the slag and ensure the air volume.

[0049] As a further embodiment of the application, a converter blowing noise collection system is provided, which includes a microphone 500, a fire wall 600 and the above-mentioned converter blowing microphone protection device; the inner side of the fire wall 600 is used to place the converter, and the outer side of the fire wall 600 faces away from the inner side; both ends of the outer sleeve 100 pass through the fire wall 600; the microphone 500 is located in the inner cavity of the inner sleeve 200.

[0050] Specifically, the microphone 500 is located outside the fire wall 600 to further avoid the influence of high temperature brought by the converter.

[0051] Specifically, the fireproof wall 600 is provided with a mounting hole for the outer sleeve 100 to be inserted.

[0052] Optionally, the mounting hole is 50 cm to 100 cm higher than the vertical direction of the furnace mouth of the converter; with the inner side surface of the fire retaining wall (the surface facing the converter) as the horizontal projection plane, the center axis of the converter passes through the mounting hole in the orthographic projection of the horizontal projection plane. This design can improve the working efficiency of the pickup 500 and prevent excessive slag from splashing into the outer sleeve of the converter.

[0053] Furthermore, a mounting platform may be fixed in the mounting hole to achieve cooperation with the outer sleeve 100 .

[0054] Preferably, the length of the outer sleeve 100 extending from the inner side of the fire wall 600 is 30 cm to 50 cm, such as 35 cm, 40 cm or 43 mm. If it is too long, it will be too close to the converter and increase the ambient temperature of the pickup 500, while if it is too short, it will affect the sound reception effect of the pickup 500.

[0055] In actual use, the microphone 500 of this embodiment is placed in the inner sleeve 100 and, in conjunction with the sound receiving plate 210, prevents the accumulation of dust and slag, thereby facilitating the transmission and collection of sound. The purge pipe 400 is located at the bottom of the outer sleeve 100, making it easier and faster to blow away dust and slag, improving the working environment of the microphone 500 and extending its service life.

[0056] In this application, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0057] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A converter blowing pickup protection device, characterized by: an outer casing, the outer casing being used to pass through the fire retaining wall, and at least a portion of the outer wall of the outer casing being provided with a cold water jacket; An inner sleeve is fixedly connected to the center of the inner side of the outer sleeve along the height direction, and the inner cavity of the inner sleeve is used to place the pickup; a horn-shaped sound receiving plate is provided at one end of the inner sleeve, and the sound receiving plate is provided with a plurality of air holes; A purge channel is formed between the inner sleeve and the outer sleeve, a purge pipe is provided in the purge channel, and the purge pipe is located on a side of the inner sleeve away from the sound receiving plate.

2. The converter blowing pickup protection device according to claim 1, characterized in that: The purge pipe is located at the lower part of the purge channel.

3. The converter blowing pickup protection device according to claim 1, characterized in that: The cold water jacket circumferentially surrounds the inner sleeve.

4. The converter blowing pickup protection device according to claim 1, characterized in that: One end of the outer sleeve away from the sound receiving plate is detachably connected to a cover plate, and the purge pipe passes through the cover plate.

5. The converter blowing pickup protection device according to claim 1, characterized in that: The inner sleeve is fixedly connected to the outer sleeve via a sound receiving plate, and / or: The outer wall of the inner sleeve is connected to the inner wall of the outer sleeve through a plurality of support beams, and the support beams are arranged along the circumference of the inner sleeve.

6. The converter blowing pickup protection device according to claim 1, characterized in that: The ratio of the inner diameter of the inner sleeve to the inner diameter of the outer sleeve is 2:5 to 3:5, and the wall thickness of the inner sleeve is 2.5 mm to 3 mm.

7. The converter blowing pickup protection device according to claim 1, characterized in that: The diameter of the air hole is 3.5 mm to 5.5 mm.

8. The converter blowing pickup protection device according to claim 1, characterized in that: The purge pipe is connected to a solenoid valve, and the gas in the purge pipe is regularly switched on and off by the solenoid valve.

9. A converter blowing noise collection system, characterized by: The device comprises a fire baffle, a microphone, and a microphone protection device for a converter according to any one of claims 1 to 8; the inner side of the fire baffle is used to place the converter; both ends of the outer sleeve pass through the fire baffle; the microphone is located in the inner cavity of the inner sleeve; The microphone is located outside the fire-blocking wall.

10. The converter blowing noise collection system according to claim 9, characterized in that: The length of the outer sleeve extending out of the inner side of the fire retaining wall is 30 cm to 50 cm.

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