A device for quickly measuring chute angle of a chute without opening a maintenance hole

Abstract

The utility model provides a device of chute angle quick measurement of not opening chute manhole relates to blast furnace ironmaking technical field, including powerful magnet, thin iron sheet, buckle hand, soft steel wire, laser range finder, this device is adsorbed in chute back through powerful magnet, two 2 meters soft steel wire connects thin iron sheet and the iron box with laser range finder, and laser range finder is opposite chute back and measures perpendicular distance, and the chute angle is calculated in combination with trigonometric function. This device need not open manhole, greatly shortens the time of stopping blast, reduces yield loss and manpower cost, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace ironmaking technology, and more specifically, to a device for quickly measuring the angle of a chute without opening a chute inspection hole. Background Technology

[0002] Modern large blast furnaces employ bell-less charging systems. The tilting angle of the charging chute is a key parameter for controlling the uniformity of charging within the furnace, directly impacting blast furnace operation and production efficiency, and requires regular calibration. The traditional calibration process involves: after the blast furnace is shut down, the furnace top is ignited to treat the gas, then the chute inspection port is opened, and the angle is measured using a specialized infrared protractor. However, this method has significant drawbacks: opening the inspection port extends the shutdown time by approximately 4 hours, leading to reduced output and economic losses; simultaneously, opening the inspection port and installing the equipment requires additional manpower and increases spare parts wear and tear costs.

[0003] In response to this situation, there is an urgent need to develop a device for quickly measuring chute angles that does not require opening the chute inspection hole, shortens ventilation downtime, saves manpower, and reduces spare parts costs, in order to overcome the drawbacks of traditional methods. Utility Model Content

[0004] To address the aforementioned technical problem, a device for quickly measuring the angle of a chute without opening an inspection hole is provided. This invention uses a powerful magnet, a soft steel wire rope, and a laser rangefinder to measure the distance from the laser rangefinder to the back of the chute and calculate the chute angle.

[0005] To achieve the above objectives, this utility model provides a device for quickly measuring the angle of a chute without opening an inspection hole, comprising a strong magnet, a thin iron sheet, a handle, a soft steel wire rope, and a laser rangefinder. The powerful magnet is mounted on a thin iron sheet, and a handle is welded onto the thin iron sheet; The number of soft steel wire ropes is two, and their upper ends are respectively welded to the lower edge of the thin iron sheet. The length of the two steel wire ropes is 2 meters. The laser rangefinder is installed in an iron box, which is welded to the lower end of the soft steel wire rope; The laser rangefinder is positioned facing the back of the chute and is used to measure the vertical distance between the wire rope and the back of the chute.

[0006] Furthermore, the powerful magnet has a cuboid structure, and its adsorption surface is in contact with the curved surface of the back of the chute.

[0007] Furthermore, when the powerful magnet is attached to the back of the chute, the steel wire rope is taut, forming a triangular measuring structure with the point of attachment of the powerful magnet as the vertex, the soft steel wire rope as the base, and the back of the chute as the hypotenuse.

[0008] Furthermore, the laser rangefinder is a portable device that can connect to a mobile phone or computer, and has a Bluetooth communication module for wirelessly connecting to a mobile phone or computer and transmitting measurement data.

[0009] Furthermore, the device calculates the tilting angle of the chute by measuring the change in the vertical distance between the soft steel wire rope and the back of the chute when the chute tilts at different angles, combined with trigonometric function formulas.

[0010] Furthermore, the laser emitted by the laser rangefinder is perpendicular to the soft steel wire rope to ensure that the measured distance is the vertical distance between the soft steel wire rope and the back of the chute.

[0011] The present invention also provides an operating method for a device for quickly measuring the angle of a chute without opening an inspection hole, comprising the following steps: S1. After the blast furnace is shut down and ignited, rotate the back of the chute to the manhole and stop. S2. Attach the strong magnet to the back of the chute, and use one end of the long-handled clamp to hold the non-attachment surface of the strong magnet so that the strong magnet is attached to the back of the chute. S3. Tilt the chute to multiple different angles and record the actual tilting value corresponding to each angle. S4. Turn on the laser rangefinder via mobile phone or computer, point the laser rangefinder directly at the back of the chute, and record the vertical distance between the wire rope and the back of the chute at each chute angle. S5. Based on the trigonometric function formula, convert the vertical distance recorded in step S4 into the tilting angle of the chute, and compare and calibrate it with the actual tilting value recorded in step S3.

[0012] By adopting the above technical solution, this utility model has the following advantages compared with the prior art: 1. This utility model provides a device for quickly measuring the angle of a chute without opening the chute inspection hole. This eliminates the need to open the chute inspection hole, reduces blast furnace downtime, and avoids production and economic losses caused by blast furnace shutdown.

[0013] 2. This utility model provides a device for quickly measuring the angle of a chute without opening a chute inspection hole, which eliminates the process of opening and installing the chute inspection hole equipment and reduces the manpower input for on-site operations.

[0014] 3. The present invention provides a device for quickly measuring the angle of a chute without opening a chute inspection hole, which avoids repeated disassembly and wear of the inspection hole equipment and reduces the cost of spare parts replacement and maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the device for quickly measuring the angle of a chute without opening an inspection hole, as described in this utility model. Figure 2 This is an application diagram of the device for quickly measuring the angle of a chute without opening an inspection hole, as described in this utility model. Figure 3 This is a schematic diagram of a device for quickly measuring the angle of a chute without opening an inspection hole, as described in this utility model. Figure 4 This is a schematic diagram of an existing measurement method for a device for quickly measuring the angle of a chute without opening a chute inspection hole, as described in this utility model. Figure 5 This is a flowchart illustrating the operation method of the device for quickly measuring the angle of a chute without opening an inspection hole, as described in this invention.

[0017] In the picture: 1. Strong magnet; 2. Thin iron sheet; 3. Handle; 4. Soft steel wire rope; 5. Laser rangefinder; 6. Iron box; 7. Furnace top door; 8. Manhole; 9. Chute. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0025] like Figures 1 to 4 As shown, this utility model provides a device for quickly measuring the angle of a chute without opening an inspection hole, including a strong magnet 1, a thin iron sheet 2, a handle 3, a soft steel wire rope 4, and a laser rangefinder 5. A strong magnet 1 is mounted on a thin iron sheet 2. A handle 3 is welded onto the thin iron sheet 2. There are two soft steel wire ropes 4, the upper ends of which are welded to the lower edge of the thin iron sheet 2 respectively. The length of each steel wire rope is 2 meters. The laser rangefinder 5 is installed in the iron box 6, which is welded to the lower end of the soft steel wire rope 4. The laser rangefinder 5 is set facing the back of the chute 9 and is used to measure the vertical distance between the steel wire rope and the back of the chute 9. After the blast furnace is shut down and the furnace top is ignited, the back of the charging chute 9 is rotated to the manhole 8 and stopped. The handle 3 is clamped with a long-handled clamp and the device is pushed to the back of the chute 9. It is then fixed to the back of the chute 9 by the magnetic force of the strong magnet 1.

[0026] Furthermore, the powerful magnet 1 has a cuboid structure, and its adsorption surface is in contact with the curved surface of the back of the chute 9 to prevent the device from sliding due to tilting or vibration of the chute 9 during the measurement process, thus ensuring measurement stability.

[0027] Furthermore, when the strong magnet 1 is adsorbed onto the back of the chute 9, the steel wire rope is in a taut state to avoid measurement errors caused by the slack of the steel wire rope, forming a triangular measurement structure with the adsorption point of the strong magnet 1 as the vertex, the soft steel wire rope 4 as the base, and the back of the chute 9 as the hypotenuse.

[0028] Furthermore, the laser rangefinder 5 is a portable device that can connect to a mobile phone or computer, and has a Bluetooth communication module for wireless connection with the mobile phone or computer to transmit measurement data. Bluetooth wireless connection enables real-time data transmission, replacing the traditional manual recording method and improving data recording efficiency. The storage function of the mobile phone / computer facilitates data retrieval and comparison, reducing human error.

[0029] Furthermore, the device measures the change in the vertical distance between the soft steel wire rope 4 and the back of the chute 9 when the chute 9 tilts at different angles, and calculates the tilt angle of the chute 9 by combining the trigonometric function formula. By combining the distance change with the trigonometric function, non-contact angle measurement is achieved without opening the inspection hole of the chute 9.

[0030] In the table, L represents the vertical distance from the back of the chute 9 of the laser rangefinder 5.

[0031] Furthermore, the laser emitted by the laser rangefinder 5 is perpendicular to the soft steel wire rope 4 to ensure that the measured distance is the vertical distance between the soft steel wire rope 4 and the back of the chute 9. The laser direction is perpendicular to the soft steel wire rope 4 to ensure the accuracy of the measured vertical distance, improve the accuracy of angle calculation, and meet the accuracy requirements of the angle calibration of the blast furnace charging chute 9. This method is more convenient than the existing measurement method at the furnace top gate 7.

[0032] like Figure 5 As shown, the present invention also provides an operation method for a device for quickly measuring the angle of chute 9 without opening the inspection hole of chute 9, including the following steps: S1. After the blast furnace shutdown and ignition are completed, rotate the back of the chute 9 to the manhole 8 and stop. S2. Attach the strong magnet 1 to the back of the chute 9, and use one end of the long-handled clamp to clamp the non-attachment surface of the strong magnet 1 so that the strong magnet 1 is attached to the back of the chute 9. S3, tilting chute 9 at multiple different angles, record the actual tilting value corresponding to each angle; S4. Turn on the laser rangefinder 5 via mobile phone or computer, and position the laser rangefinder 5 directly opposite the back of the chute 9. Record the vertical distance between the wire rope and the back of the chute 9 at each angle of the chute 9. S5. Based on the trigonometric function formula, convert the vertical distance recorded in step S4 into the tilting angle of chute 9, and compare and calibrate it with the actual tilting value recorded in step S3.

[0033] The implementation process of this device is as follows: After the blast furnace is shut down and the furnace top is ignited, there is no need to open the inspection hole of the chute 9. First, rotate the material feeding chute 9 to the manhole 8 and stop. Use a long-handled clamp to hold the handle 3 welded to the thin iron plate 2. Push the thin iron plate 2 with the rectangular strong magnet 1 installed to the back of the chute 9 and fix it by the magnetic force of the strong magnet 1. At this time, the two 2-meter-long soft steel wire ropes 4 are in a taut state, forming a triangular measurement structure with the adsorption point of the strong magnet 1 as the vertex, the soft steel wire rope 4 as the waist, and the back of the chute 9 as the hypotenuse. Ensure that the laser rangefinder 5 emits a direction perpendicular to the soft steel wire rope 4 and is facing the back of the chute 9. Activate the Bluetooth communication module of the laser rangefinder 5 to wirelessly connect it to a mobile phone or computer. Operate the chute 9 to tilt to different angles and record the vertical distance between the soft steel wire rope 4 and the back of the chute 9 in real time at each angle. Based on the recorded vertical distance changes, combined with trigonometric function formulas, the actual tilting angle of chute 9 is calculated and compared with the set angle of chute 9 for verification, thus achieving the purpose of quickly measuring the angle of chute 9 without opening the inspection hole of chute 9.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for quickly measuring the angle of a chute without opening an inspection hole, characterized in that, include: Strong magnets, thin iron sheets, handles, soft steel wire ropes, laser rangefinders; The powerful magnet is mounted on a thin iron sheet, and a handle is welded onto the thin iron sheet; The number of soft steel wire ropes is two, and their upper ends are respectively welded to the lower edge of the thin iron sheet. The length of the two steel wire ropes is 2 meters. The laser rangefinder is installed in an iron box, which is welded to the lower end of the soft steel wire rope; The laser rangefinder is positioned facing the back of the chute and is used to measure the vertical distance between the wire rope and the back of the chute.

2. The device for quickly measuring the angle of a chute without opening an inspection hole, as described in claim 1, is characterized in that... The powerful magnet has a cuboid structure, and its adsorption surface is in contact with the curved surface on the back of the chute.

3. The device for quickly measuring the angle of a chute without opening an inspection hole, as described in claim 2, is characterized in that... When the powerful magnet is attached to the back of the chute, the steel wire rope is taut, forming a triangular measuring structure with the point of attachment of the powerful magnet as the vertex, the soft steel wire rope as the base, and the back of the chute as the hypotenuse.

4. The device for quickly measuring the angle of a chute without opening an inspection hole, as described in claim 1, is characterized in that... The laser rangefinder is a portable device that can connect to a mobile phone or computer. It has a Bluetooth communication module for wireless connection with the mobile phone or computer and for transmitting measurement data.

5. The device for quickly measuring the angle of a chute without opening an inspection hole according to claim 1, characterized in that, The device calculates the tilt angle of the chute by measuring the change in the vertical distance between the soft steel wire rope and the back of the chute when the chute tilts at different angles, and then using trigonometric function formulas.

6. The device for quickly measuring the angle of a chute without opening an inspection hole according to claim 1, characterized in that, The laser emitted by the laser rangefinder is perpendicular to the soft steel wire rope to ensure that the measured distance is the vertical distance between the soft steel wire rope and the back of the chute.

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