Blast furnace body inspection system and inspection method

Abstract

The invention belongs to the technical field of blast furnace smelting, and discloses a blast furnace body inspection system and method, and the blast furnace body inspection system comprises a winding mechanism and a detection mechanism. The winding mechanism is arranged on a furnace top platform on the side part of the blast furnace body; the detection mechanism comprises a chain, a gravity ball and a detection assembly, the gravity ball is arranged at one end of the chain, the other end of the chain is connected to the winding mechanism, and the detection assembly is arranged on the chain and close to the gravity ball; the gravity ball can slide downwards along the outer wall surface of the blast furnace body under the action of self gravity, and drives the chain and the detection assembly to move downwards; the winding mechanism can wind the chain so as to pull the detection assembly and the gravity ball to reset. The blast furnace body inspection system can realize automation of blast furnace body inspection operation, reduces manual labor, and is wide in inspection coverage range and high in efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace smelting, and in particular to a blast furnace body inspection system and inspection method. Background Art

[0002] A blast furnace is a facility used by modern steel companies to produce molten iron. It is mainly used to reduce room temperature iron ore into 1500°C molten iron under high temperature and high pressure.

[0003] During the blast furnace production process, operators need to regularly inspect the blast furnace, which mainly includes temperature measurement, gas measurement, leakage measurement and other links that may affect the blast furnace production. If the blast furnace body has high temperature or gas leakage, etc., it is very easy to cause major safety accidents if it is not discovered in time.

[0004] At present, the inspection of the blast furnace body is mainly carried out manually. Mechanical equipment is used to measure the temperature of coal gas in very few platform areas. At present, the most widely used technology is the temperature measurement of the tuyere robot. Robot temperature measurement is mainly carried out through thermal imaging scanning technology. According to the set track, the robot is aimed at the scanning area for detection. However, robot detection can only detect the part directly opposite the platform and within the scanning range. Manual detection needs to be carried out in combination with human perception and experience. Therefore, both manual inspection and robot inspection will have large blind spots, resulting in many pipelines or platform blind spots that cannot be detected. At the same time, the inspection work is an aerial operation, and the labor and safety risks of manual inspection are very high, and the efficiency is low.

[0005] Therefore, there is an urgent need for a blast furnace body inspection system and inspection method to solve the above problems. Summary of the invention

[0006] An object of the present invention is to provide a blast furnace body inspection system, which can realize the automation of blast furnace body inspection operations, reduce manual labor, and has a wide inspection coverage and high efficiency.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] Blast furnace inspection system, including:

[0009] The winding mechanism is arranged on the furnace top platform at the side of the blast furnace body;

[0010] The detection mechanism comprises a chain, a gravity ball and a detection assembly, wherein the gravity ball is arranged at one end of the chain, the other end of the chain is connected to the winding mechanism, and the detection assembly is arranged on the chain and close to the gravity ball;

[0011] The gravity ball can slide downward along the outer wall surface of the blast furnace body under the action of its own gravity, and drive the chain and the detection component to move downward;

[0012] The winding mechanism can wind up the chain to pull the detection assembly and the gravity ball to reset.

[0013] Optionally, it also includes a limit ring, which is sleeved on the peripheral side of the blast furnace body. The limit ring is closer to the blast furnace body than the winding mechanism, and there is a gap between the inner wall of the limit ring and the blast furnace body. The height of the limit ring is lower than the height of the winding mechanism, and the chain can be slidably attached to the inner wall of the limit ring.

[0014] Optionally, it also includes a limit sleeve, which is arranged on the limit ring. The limit sleeve can rotate relative to the limit ring. Along the circumference of the limit ring, the relative position of the limit sleeve and the limit ring is fixed, and the chain can be slidably attached to the side of the limit sleeve facing the blast furnace body.

[0015] Optionally, along the circumference of the limiting ring, two limiting protrusions are spaced apart on the outer wall surface of the blast furnace body and / or the limiting ring, and the limiting sleeve is located between the two limiting protrusions.

[0016] Optionally, a plurality of the detection mechanisms are provided, and the plurality of the detection mechanisms are arranged at intervals along the circumference of the blast furnace body.

[0017] Optionally, the diameter of the gravity ball is larger than the diameter of the detection assembly, and the diameter of the gravity ball is smaller than the distance between any two cooling wall pipelines of the blast furnace body.

[0018] Optionally, the detection component includes at least one of a thermal imager, a gas concentration detector, a noise detector and a pressure detector.

[0019] Optionally, the winding mechanism includes a motorized roller and a pulley assembly, the fixed end of the motorized roller is arranged on the furnace top platform, the pulley assembly is arranged on the edge of the furnace top platform close to the blast furnace body, the chain passes around the pulley assembly and is wound around the roller of the motorized roller.

[0020] Another object of the present invention is to provide a blast furnace body inspection method, which uses the above-mentioned blast furnace body inspection system to perform blast furnace body inspection operations, including the following steps:

[0021] S100, loosening the winding mechanism, so that the gravity ball pulls the chain and the detection component to slide downward along the outer wall of the blast furnace body at a first preset speed under the action of its own gravity;

[0022] S200, calculating the descending position of the detection component according to the first preset speed, and recording descending detection data of the detection component;

[0023] S300. If the descent detection data reaches the set target value, the position parameter exceeds the standard and a warning signal is issued; otherwise, the gravity ball continues to move downward at the first preset speed and returns to step S200.

[0024] Optionally, after step S300, the method further includes:

[0025] S400, when the gravity ball moves to the bottom end of the blast furnace body, the winding mechanism opens and winds up the chain, pulling the gravity ball to move upward at a second preset speed;

[0026] S500, calculating the rising position of the detection component according to the second preset speed, and recording the rising detection data of the detection component, the rising position and the falling position corresponding to each other one by one;

[0027] S600, after the chain pulls the gravity ball to reset, the winding mechanism is closed, and the multiple ascending detection data are matched one by one with the multiple descending detection data.

[0028] Beneficial effects of the present invention:

[0029] In the blast furnace body inspection system provided by the present invention, a winding mechanism is arranged on the roof platform of the side of the blast furnace body, a gravity ball is arranged on one end of a chain, the other end of the chain is connected to the winding mechanism, and a detection component is arranged on a side of the chain close to the gravity ball. When the gravity ball slides downward along the outer wall surface of the blast furnace body under the action of its own gravity, the gravity ball can drive the chain and the detection component to move downward, and the detection component can perform a detection on the blast furnace body from top to bottom during the movement. At the same time, the winding mechanism can wind up the chain to pull the detection component and the gravity ball to reset, and in the process of the winding mechanism pulling the detection component and the gravity ball to move upward, the detection component can also perform a secondary detection on the blast furnace body from bottom to top. In other words, the two inspections of the detection component do not require manual participation, have a high degree of automation, effectively reduce manual labor, and have a wide coverage and high inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0031] Figure 1 It is a structural schematic diagram of a blast furnace main body inspection system provided in Embodiment 1 of the present invention;

[0032] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0033] In the figure:

[0034] 100. Blast furnace body; 200. Furnace top platform;

[0035] 1. Winding mechanism; 11. Motorized roller; 12. Pulley assembly;

[0036] 2. Detection mechanism; 21. Chain; 22. Gravity ball; 23. Detection component;

[0037] 3. Limiting ring. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] Embodiment 1

[0047] This embodiment provides a blast furnace inspection system. Figure 1 and Figure 2 As shown, the blast furnace main body inspection system includes a winding mechanism 1 and a detection mechanism 2.

[0048] Specifically, the winding mechanism 1 is arranged on the furnace roof platform 200 at the side of the blast furnace body 100. The detection mechanism 2 includes a chain 21, a gravity ball 22 and a detection assembly 23. The gravity ball 22 is arranged at one end of the chain 21, and the other end of the chain 21 is connected to the winding mechanism 1. The detection assembly 23 is arranged on the chain 21 and close to the gravity ball 22.

[0049] When the gravity ball 22 slides downward along the outer wall of the blast furnace body 100 under the action of its own gravity, the gravity ball 22 can drive the chain 21 and the detection component 23 to move downward, and the detection component 23 can perform a detection on the blast furnace body 100 from top to bottom during the movement. At the same time, the winding mechanism 1 can wind up the chain 21 to pull the detection component 23 and the gravity ball 22 to reset. In the process of the winding mechanism 1 pulling the detection component 23 and the gravity ball 22 to move upward, the detection component 23 can also perform a secondary detection on the blast furnace body 100 from bottom to top. In other words, the two inspections of the detection component 23 do not require manual participation, have a high degree of automation, effectively reduce manual labor, and have a wide coverage and high inspection efficiency.

[0050] Preferably, the detection mechanism 2 is provided with a plurality of detection mechanisms 2, and the plurality of detection mechanisms 2 are arranged at intervals along the circumference of the blast furnace body 100. The plurality of detection mechanisms 2 can cover the entire circumference of the blast furnace body 100, so as to further expand the inspection range and ensure that there are no blind spots in the inspection, thereby better ensuring the safety of the blast furnace.

[0051] Furthermore, the detection component 23 includes at least one of a thermal imager, a gas concentration detector, a noise detector, and a pressure detector. The specific type and quantity of the detection component 23 can be determined according to actual needs, and this embodiment does not limit it.

[0052] like Figure 2 As shown, the blast furnace body inspection system also includes a limit ring 3, which is sleeved on the peripheral side of the blast furnace body 100. The limit ring 3 is closer to the blast furnace body 100 than the winding mechanism 1, and there is a gap between the inner wall of the limit ring 3 and the blast furnace body 100. The height of the limit ring 3 is lower than the height of the winding mechanism 1, and the chain 21 can be slidably attached to the inner wall of the limit ring 3. The limit ring 3 can press the chain 21 toward the blast furnace body 100, avoiding the problem that the distance between the chain 21 and the blast furnace body 100 is too large, causing the chain 21 to shift or even multiple chains 21 to interfere with each other.

[0053] Optionally, the blast furnace body inspection system also includes a limit sleeve (not shown). The limit sleeve is arranged on the limit ring 3, and the limit sleeve can rotate relative to the limit ring 3. Along the circumference of the limit ring 3, the relative position of the limit sleeve and the limit ring 3 is fixed. In other words, the limit sleeve cannot move along the circumference of the limit ring 3, and can only rotate relative to the limit ring 3. The chain 21 can be slidably attached to the side of the limit sleeve facing the blast furnace body 100, and the limit sleeve can play a buffering role between the chain 21 and the limit ring 3 to avoid direct contact between the chain 21 and the limit ring 3. Since the chain 21 needs to slide relative to the limit ring 3 frequently, if the chain 21 is in direct contact with the limit ring 3, long-term friction will cause wear of the chain 21 and the limit ring 3. By adding a limit sleeve, the limit ring 3 can be protected. If the limit sleeve is worn, only the limit sleeve can be replaced, which saves costs. At the same time, there is rolling contact between the limiting sleeve and the chain 21 , and there is sliding contact between the limiting sleeve and the limiting ring 3 , so that the limiting sleeve can make the movement of the chain 21 relative to the limiting ring 3 smoother.

[0054] Specifically, along the circumference of the limiting ring 3, two limiting protrusions are arranged at intervals on the outer wall surface of the blast furnace body 100 and / or the limiting ring 3, and the limiting sleeve is located between the two limiting protrusions. By setting two limiting protrusions, the limiting sleeve is positioned to prevent the limiting sleeve from moving along the circumference of the limiting ring 3. Similarly, in this embodiment, a plurality of limiting sleeves are provided, each of which corresponds to a chain 21. In this way, the plurality of chains 21 can be separated to prevent the plurality of chains 21 from being entangled.

[0055] Optionally, the diameter of the gravity ball 22 is larger than the diameter of the detection assembly 23, so as to ensure that when the gravity ball 22 is close to the outer wall of the blast furnace body 100, the detection assembly 23 will not contact the outer wall of the blast furnace body 100, thereby preventing the detection assembly 23 from being damaged. At the same time, the diameter of the gravity ball 22 is smaller than the distance between any two cooling wall pipelines of the blast furnace body 100, so as to ensure that when the gravity ball 22 encounters obstacles such as the cooling water pipeline of the cooling wall during the downward process, it can pass through the gap between the two pipelines. In this embodiment, the diameter of the gravity ball 22 is 50-80 mm.

[0056] Alternatively, the gravity ball 22 may be, but is not limited to, a steel ball. The steel ball has a large deadweight and can drive the chain 21 and each detection assembly 23 on the chain 21 to move.

[0057] Continue to refer to Figure 2 The winding mechanism 1 includes a motorized roller 11 and a pulley assembly 12. The fixed end of the motorized roller 11 is arranged on the furnace top platform 200, the pulley assembly 12 is arranged on the edge of the furnace top platform 200 close to the blast furnace body 100, and the chain 21 passes around the pulley assembly 12 and is wound on the roller of the motorized roller 11.

[0058] Specifically, the tightness of the chain 21 on the electric roller 11 is controlled by the clamping gate. When inspection is not required, the clamping gate is closed, and the chain 21 is tightly wound around the roller of the electric roller 11. When the inspection begins, the chain 21 moves driven by the gravity ball 22. At this time, the clamping gate is partially opened to control the descending speed of the gravity ball 22 to prevent the gravity ball 22 from descending too fast and the detection component 23 from being able to stably detect the blast furnace body 100. When the gravity ball 22 reaches the bottom of the blast furnace body 100, the clamping gate is fully opened, the electric roller 11 is started, and the chain 21 and the gravity ball 22 are pulled upward. By controlling the rotation speed of the roller, the rising speed of the gravity ball 22 and the detection component 23 can be controlled.

[0059] In this embodiment, the blast furnace inspection system further includes a control system (not shown). The detection component 23 (at least one of a thermal imager, a gas concentration detector, a noise detector and a pressure detector), the electric roller 11 and the holding brake are all communicatively connected to the control system.

[0060] Specifically, the detection component 23 is equipped with a wireless sensor, which transmits the detection data (thermal imaging pictures and temperature, gas concentration, noise decibel or air pressure value) to the control system through a wireless network for recording and comparison. The control system can also control the opening of the clamping brake and the opening and closing of the electric roller 11. Exemplarily, the control system can be selected as a PLC in the prior art.

[0061] Embodiment 2

[0062] This embodiment provides a blast furnace body inspection method, which uses the blast furnace body inspection system provided in the first embodiment to perform inspection operations on the blast furnace body 100, including the following steps:

[0063] S100, loosen the winding mechanism 1, so that the gravity ball 22 pulls the chain 21 and the detection assembly 23 to slide downward along the outer wall surface of the blast furnace body 100 at a first preset speed under the action of its own gravity.

[0064] Specifically, in this step, the clamping brake signal of the motorized roller 11 is first released, and the clamping brake opening is adjusted according to the field test to ensure that the gravity ball 22 can slowly descend. In this embodiment, the first preset speed is 1-2 meters per minute.

[0065] S200 , calculating the descending position of the detection component 23 according to the first preset speed, and recording the descending detection data of the detection component 23 .

[0066] Specifically, under the gravity of the gravity ball 22, the gravity ball 22 pulls the chain 21 to move downward, driving the detection component 23 on the chain 21 to move downward along the outer wall of the blast furnace body 100. In this embodiment, the detection component 23 is a thermal imager and a gas concentration detector. During the downward process, the specific position of the detection point can be obtained according to the downward speed, and the temperature data and gas concentration data of the point can be recorded.

[0067] S300, if the descent detection data reaches the set target value, the position parameter exceeds the standard and a warning signal is issued; otherwise, the gravity ball 22 continues to move downward at the first preset speed and returns to step S200.

[0068] Optionally, after step S300, the method further includes:

[0069] S400, when the gravity ball 22 moves to the bottom end of the blast furnace body 100, the winding mechanism 1 opens and winds up the chain 21, pulling the gravity ball 22 to move upward at a second preset speed.

[0070] Specifically, according to the descending distance of the chain 21, when it is detected that the gravity ball 22 reaches the bottom end of the blast furnace body 100, the holding brake is fully opened, and the electric roller 11 is synchronously started to pull the chain 21 upward.

[0071] Furthermore, the second preset speed is less than the first preset speed. The second preset speed is 0.5-1.0 m / min.

[0072] S500, calculating the rising position of the detection component 23 according to the second preset speed, and recording the rising detection data of the detection component 23, the rising position and the falling position corresponding to each other one by one.

[0073] S600, after the chain 21 pulls the gravity ball 22 to reset, the winding mechanism 1 is closed, and the plurality of ascending detection data are matched one by one with the plurality of descending detection data.

[0074] During the upward process of the chain 21, the detection component 23 continues to detect the points during the downward and upward process. When the chain 21 runs to the upper limit position, the proximity head switch corresponding to the gravity ball 22 displays an in-position signal. By obtaining two sets of detection data, the inspection of all points in the blast furnace body 100 area can be accurately completed.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Blast furnace inspection system, characterized in that: include: A winding mechanism (1) is arranged on a furnace top platform (200) on the side of a blast furnace body (100); The detection mechanism (2) comprises a chain (21), a gravity ball (22) and a detection component (23), wherein the gravity ball (22) is arranged at one end of the chain (21), the other end of the chain (21) is connected to the winding mechanism (1), and the detection component (23) is arranged on a side of the chain (21) close to the gravity ball (22); The gravity ball (22) can slide downward along the outer wall surface of the blast furnace body (100) under the action of its own gravity, and drive the chain (21) and the detection component (23) to move downward; The winding mechanism (1) is capable of winding the chain (21) to pull the detection component (23) and the gravity ball (22) to reset.

2. The blast furnace inspection system according to claim 1, characterized in that: It also includes a limiting ring (3), which is sleeved on the peripheral side of the blast furnace body (100). The limiting ring (3) is closer to the blast furnace body (100) than the winding mechanism (1), and there is a gap between the inner wall of the limiting ring (3) and the blast furnace body (100). The height of the limiting ring (3) is lower than the height of the winding mechanism (1), and the chain (21) can be slidably abutted against the inner wall of the limiting ring (3).

3. The blast furnace inspection system according to claim 2, characterized in that: It also includes a limiting sleeve, which is arranged on the limiting ring (3). The limiting sleeve can rotate relative to the limiting ring (3). Along the circumference of the limiting ring (3), the relative position of the limiting sleeve and the limiting ring (3) is fixed, and the chain (21) can be slidably attached to the side of the limiting sleeve facing the blast furnace body (100).

4. The blast furnace inspection system according to claim 3, characterized in that: Along the circumference of the limiting ring (3), two limiting protrusions are arranged at intervals on the outer wall surface of the blast furnace body (100) and / or the limiting ring (3), and the limiting sleeve is located between the two limiting protrusions.

5. The blast furnace inspection system according to claim 1, characterized in that: A plurality of the detection mechanisms (2) are provided, and the plurality of detection mechanisms (2) are arranged at intervals along the circumference of the blast furnace body (100).

6. The blast furnace inspection system according to claim 1, characterized in that: The diameter of the gravity ball (22) is greater than the diameter of the detection component (23), and the diameter of the gravity ball (22) is smaller than the distance between any two cooling wall pipelines of the blast furnace body (100).

7. The blast furnace inspection system according to claim 1, characterized in that: The detection component (23) comprises at least one of a thermal imager, a gas concentration detector, a noise detector and a pressure detector.

8. The blast furnace inspection system according to claim 1, characterized in that: The winding mechanism (1) comprises a motorized roller (11) and a pulley assembly (12); the fixed end of the motorized roller (11) is arranged on the furnace top platform (200); the pulley assembly (12) is arranged on the edge of the furnace top platform (200) close to the blast furnace body (100); the chain (21) passes around the pulley assembly (12) and is wound around the roller of the motorized roller (11).

9. A blast furnace body inspection method, characterized in that: The blast furnace body inspection system according to any one of claims 1 to 8 is used to perform inspection of the blast furnace body (100), comprising the following steps: S100, loosening the winding mechanism (1), so that the gravity ball (22) pulls the chain (21) and the detection component (23) under the action of its own gravity to slide downward along the outer wall surface of the blast furnace body (100) at a first preset speed; S200, calculating the descending position of the detection component (23) according to the first preset speed, and recording descending detection data of the detection component (23); S300, if the descent detection data reaches the set target value, the parameter of the descent position exceeds the standard and a warning signal is issued; otherwise, the gravity ball (22) continues to move downward at the first preset speed and returns to step S200.

10. The blast furnace main body inspection method according to claim 9, characterized in that: After step S300, the method further includes: S400, when the gravity ball (22) moves to the bottom end of the blast furnace body (100), the winding mechanism (1) opens and winds up the chain (21), pulling the gravity ball (22) to move upward at a second preset speed; S500, calculating the rising position of the detection component (23) according to the second preset speed, and recording the rising detection data of the detection component (23), wherein the rising position corresponds to the falling position one by one; S600, after the chain (21) pulls the gravity ball (22) to reset, the winding mechanism (1) is closed, and the plurality of ascending detection data are matched one by one with the plurality of descending detection data.

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