Detection tool for coke oven heads

Abstract

The application provides a coke oven head detection tool, which comprises a detection head and an extension rod, and the detection head is detachably connected with the extension rod; the detection head has a cylindrical shell, and a fixed measuring rod is arranged at one end of the cylindrical shell in the axial direction; a telescopic measuring rod is arranged in the cylindrical shell, one end of the telescopic measuring rod extends out of the cylindrical shell and can extend and retract in the axial direction; an elastic component is arranged in the cylindrical shell and connected with the telescopic measuring rod, and is used for providing an elastic extension force; a wheel assembly comprises a dynamic wheel arranged on the telescopic measuring rod and a static wheel arranged on the fixed measuring rod, and is used for rolling contact with an oven wall; and the telescopic measuring rod is provided with an identification part used for indicating the size state of the oven head. The detection tool uses the extension rod to lift the detection head to a detection position, realizes safe operation outside the oven, and realizes quick and accurate judgment through elastic extension and the identification part, and has the beneficial effects of high safety, high detection efficiency and accurate measurement.

Description

Technical Field

[0001] This invention relates to the field of ironmaking technology, and more particularly to a detection tool for coke oven heads. Background Technology

[0002] The coke oven is the core thermal equipment in the coking process of the metallurgical industry. Its carbonization chamber and combustion chamber are arranged alternately. The combustion chamber converts chemical energy into thermal energy through the mixing of coal gas and air, providing heat for the dry distillation of coal in the carbonization chamber. During coke oven operation, the furnace head sections located on the machine side (coke pusher side) and coke side (coke quencher side), i.e., the masonry at both ends of the carbonization chamber, are the most vulnerable areas of the furnace body. The machine side furnace head is prone to wear, abrasion, and deformation due to potential positional deviations when the coke pusher rod enters and exits the carbonization chamber. The coke side furnace head experiences even more severe impact and wear on the furnace head bricks due to the frequent insertion of the coke guide chute into the coke oven during coke discharge. Therefore, regularly inspecting the dimensions of the coke oven machine and coke side furnace heads, and monitoring furnace wall deformation, is crucial for ensuring safe operation and extending the furnace body's lifespan.

[0003] Currently, furnace head size inspection mainly focuses on measuring the deformation of the furnace wall at the furnace head of the carbonization chamber. Traditional inspection procedures are extremely cumbersome: before inspection, the coke in the target carbonization chamber must be emptied, and the fire channels at the beginning or end of the two adjacent combustion chambers must be closed, leaving only a small fire in the middle for insulation; subsequently, a fire baffle frame must be constructed inside the furnace and aluminum silicate insulation boards laid. The fire baffle is then pushed into the carbonization chamber to a depth of approximately one meter for installation. Only after the furnace temperature has cooled to a workable range can personnel enter for measurement. During measurement, the lower area of ​​the carbonization chamber can be operated from the coke oven platform, but the entire carbonization chamber is approximately 6 meters high, and inspections in the upper and middle sections require scaffolding or the assistance of a coke pusher for high-altitude work.

[0004] It is evident that existing furnace head inspection technology is cumbersome and time-consuming to prepare for, requiring the furnace to be shut down for more than 16 hours each time, during which the furnace is in a state of shutdown, which has a significant impact on coke oven production capacity. Furthermore, during the operation, personnel need to enter the high-temperature furnace body or perform high-altitude work, facing multiple safety risks such as flame burns, dust infestation, gas leaks, and falls from heights. The environment is harsh and prone to causing personal safety accidents. Summary of the Invention

[0005] This invention provides a detection tool for coke oven heads to solve the problems of existing head detection operations requiring long shutdowns, cumbersome and time-consuming processes that severely affect coke oven production capacity, high safety risks due to personnel entering the high-temperature furnace or performing high-altitude operations, and the problems of existing sliding ruler tools being easily damaged, having ash accumulation and obstruction in the slots, and having worn and blurred rulers leading to poor measurement reliability and low detection efficiency.

[0006] This invention provides a detection tool for a coke oven head, comprising: The detection head has a cylindrical shell, and a fixed measuring rod is provided at one end of the cylindrical shell along the axial direction; A telescopic measuring rod is disposed inside the cylindrical housing, with one end of the telescopic measuring rod extending out of the cylindrical housing and capable of axially extending and retracting relative to the cylindrical housing; An elastic component is disposed inside the cylindrical housing and connected to the telescopic measuring rod. The elastic component is used to provide the telescopic measuring rod with an elastic force that extends out of the cylindrical housing. A roller assembly for rolling contact with the furnace wall, the roller assembly including a movable roller and a stationary roller, the movable roller being mounted on the telescopic measuring rod and the stationary roller being mounted on the fixed measuring rod; An indicator section is provided on the telescopic measuring rod to indicate the furnace head size status corresponding to the extension amount of the telescopic measuring rod; An extension rod, detachably connected to the detection head, is used to lift the detection head to the detection position.

[0007] In one embodiment of the present invention, the marking part includes a recessed abnormality indication area, a normal indication area, and a protruding abnormality indication area located on the telescopic rod and arranged sequentially along the axial direction of the telescopic measuring rod.

[0008] In one embodiment of the present invention, the dent abnormality indication area is a yellow marking area, corresponding to the dented state of the burner head; The normal indicator area is a green area, corresponding to the normal range of burner head size; The abnormal protrusion indication area is marked in red, corresponding to the protruding state of the burner head.

[0009] In one embodiment of the present invention, the marking part is made of three-color heat shrink tubing and is fitted onto the outer wall of the telescopic measuring rod.

[0010] In one embodiment of the present invention, a stop block is provided at one end of the telescopic measuring rod located inside the cylindrical housing. The stop block is connected to the elastic component and slides against the inner wall of the cylindrical housing.

[0011] In one embodiment of the present invention, the elastic component is a spring.

[0012] In one embodiment of the present invention, the length of the recessed abnormality indication area, the normal indication area, and the protruding abnormality indication area along the axial direction of the telescopic measuring rod is 20 mm.

[0013] In one embodiment of the present invention, the detection head is provided with a first internal thread interface, and the extension rod is provided with an external thread connection part, the external thread connection part being threadedly connected to the first internal thread interface.

[0014] In one embodiment of the present invention, the extension rod includes at least one rod body, and each rod body is provided with an external threaded connection part and a second internal threaded interface at both ends along the axial direction, the second internal threaded interface being used for threaded connection with the external threaded connection part of the rod body.

[0015] In one embodiment of the present invention, the extension rod comprises three rod sections connected by threads in sequence, each rod section having a length of 1.5m to 2m.

[0016] The beneficial effects of this invention: The coke oven head inspection tool proposed in this invention uses an elastic component to drive a telescopic measuring rod to extend out of the cylindrical shell and, in conjunction with a wheel assembly, maintain close rolling contact with the furnace wall. This allows the extension of the telescopic measuring rod to accurately reflect the amount of deformation of the furnace wall, and the marking section visually displays the size and status of the oven head. This enables rapid and accurate judgment of the oven head deformation. Simultaneously, the extension rod raises the inspection head to a high position, allowing operators to conduct continuous inspections of the entire height from top to bottom of the carbonization chamber from a safe area outside the furnace without the need for scaffolding or entering the furnace. This significantly reduces safety risks such as falls from heights, high-temperature burns, and gas inhalation, eliminates the hazards of personnel entering the furnace, and greatly simplifies the cumbersome preparation process of traditional furnace shutdown and cooling with firebreak construction. It reduces the shutdown time for a single inspection from over 16 hours to less than 40 minutes, effectively solving the technical problems of high safety risks, low inspection efficiency, long shutdown time, and measurement accuracy affected by tool damage and unclear readings in existing technologies. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] In the attached diagram: Fig. 1 This is a schematic diagram of the structure of the detection head in the detection tool for the coke oven head provided in an embodiment of this application; Fig. 2 A schematic diagram showing the usage status of a detection tool for a coke oven head provided in an embodiment of this application; Fig. 3 This is a schematic diagram of the extension rod in the detection tool for the coke oven head provided in one embodiment of this application.

[0019] The attached figures are labeled as follows: 1. Housing, 101. First internal thread interface, 2. Fixed measuring rod, 3. Telescopic measuring rod, 301. Indicator area for dents, 302. Indicator area for normal conditions, 303. Indicator area for bulges, 4. Elastic component, 5. Moving wheel, 6. Stationary wheel, 7. Extension rod, 701. External thread connection, 702. Second internal thread interface, 8. Stop. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0023] Please combine Figs. 1 to 3 As shown, the present invention provides a detection tool for coke oven heads.

[0024] In an exemplary embodiment of this application, the detection tool for the coke oven head includes: a detection head having a cylindrical shell 1, with a fixed measuring rod 2 at one end of the cylindrical shell 1 along the axial direction; a telescopic measuring rod 3 disposed inside the cylindrical shell 1, with one end of the telescopic measuring rod 3 extending out of the cylindrical shell 1 and capable of telescopically extending and retracting relative to the cylindrical shell 1 along the axial direction; an elastic member 4 disposed inside the cylindrical shell 1 and connected to the telescopic measuring rod 3, the elastic member 4 being used to provide an elastic force to the telescopic measuring rod 3 extending out of the cylindrical shell 1; a roller assembly for rolling contact with the furnace wall, the roller assembly including a movable roller 5 and a stationary roller 6, the movable roller 5 being disposed on the telescopic measuring rod 3 and the stationary roller 6 being disposed on the fixed measuring rod 2; an marking part disposed on the telescopic measuring rod 3 for indicating the furnace head size state corresponding to the extension amount of the telescopic measuring rod 3; and an extension rod 7 detachably connected to the detection head for lifting the detection head to the detection position.

[0025] In this embodiment, during testing, the operator holds the extension rod 7 and places the testing head inside the furnace head, ensuring the stationary support wheel 6 contacts one side of the furnace wall. Under the elastic force of the elastic component 4, the telescopic measuring rod 3 drives the moving support wheel 5 to remain firmly against the other side of the furnace wall. Slowly sliding upwards along the furnace wall, the telescopic measuring rod 3 extends and retracts with the unevenness of the furnace wall surface. The operator can visually determine the furnace head size by observing the color change of the markings on the telescopic measuring rod 3. If the height is insufficient, the extension rod 7 is connected to continue the upward testing until the entire carbonization chamber height is covered. Using this technique, the operator can complete the full-height testing in a safe area outside the furnace without entering the furnace body or erecting scaffolding, effectively reducing safety risks, simplifying the work process, and significantly shortening the testing time.

[0026] In an exemplary embodiment of this application, the marking section includes a recessed abnormality indication area 301, a normal indication area 302, and a protruding abnormality indication area 303, which are located on the telescopic rod and are arranged sequentially along the axial direction of the telescopic measuring rod 3.

[0027] In this embodiment, three indicator areas are arranged sequentially along the axial direction of the telescopic measuring rod 3. When the telescopic measuring rod 3 extends or retracts according to the state of the furnace wall surface, the indicator area corresponding to the entrance of the cylindrical shell 1 through which the telescopic measuring rod 3 passes is used as a reference. This indicates the current furnace head size status. For example, when the furnace wall surface is concave, the telescopic measuring rod 3 is pushed out by the elastic force of the elastic component 4, increasing its extension amount, corresponding to the concave abnormality indicator area 301; when the furnace wall surface is convex, the telescopic measuring rod 3 is pushed back inward, corresponding to the convex abnormality indicator area 303. By clearly dividing the furnace head status into three zones, operators can intuitively determine the test results without reading scale numbers, greatly improving the speed and accuracy of on-site test interpretation.

[0028] In an exemplary embodiment of this application, the dented abnormality indication area 301 is a yellow marking area, corresponding to the dented state of the burner head; the normal indication area 302 is a green marking area, corresponding to the normal range of burner head size; and the protrusion abnormality indication area 303 is a red marking area, corresponding to the protruding state of the burner head.

[0029] In this embodiment, when the inlet of the cylindrical shell 1 corresponds to the green marking area, it indicates that the furnace head size is within the allowable error range and is in a normal state; when it corresponds to the yellow marking area, it indicates that the furnace wall is concave inward, which is an abnormal concavity state; when it corresponds to the red marking area, it indicates that the furnace wall is bulging outward, which is an abnormal bulge state. Using red, green, and yellow to correspond to the bulge, normal, and concave states respectively provides a clear color contrast, conforming to the intuitive cognitive habits of on-site operators. Even in harsh environments with insufficient light or high dust levels, the differences can be clearly identified, further improving the convenience and reliability of the detection.

[0030] In one exemplary embodiment of this application, the marking part is made of three-color heat shrink tubing and is fitted onto the outer wall of the telescopic measuring rod 3.

[0031] In this embodiment, red, green, and yellow heat shrink tubing sections are selected and sequentially fitted onto the outer wall of the telescopic measuring rod 3 in the order of protruding abnormal indication area 303, normal indication area 302, and recessed abnormal indication area 301. After heat treatment, the heat shrink tubing adheres tightly to the surface of the telescopic measuring rod 3, forming a firm color ring marking. The three-color heat shrink tubing has a simple manufacturing process and low cost. Furthermore, the heat shrink tubing has excellent wear resistance and high-temperature resistance, enabling it to adapt to the harsh working conditions of coke ovens, such as high temperatures and dust. It is not prone to fading or peeling, ensuring the durability and clarity of the marking section for long-term use.

[0032] In an exemplary embodiment of this application, a stop block 8 is provided on one end of the telescopic measuring rod 3 located inside the cylindrical housing 1. The stop block 8 is connected to the elastic member 4, and the stop block 8 slides in cooperation with the inner wall of the cylindrical housing 1.

[0033] In this embodiment, the stop block 8 is fixedly disposed at one end of the telescopic measuring rod 3 that extends into the cylindrical housing 1. One end of the elastic component 4 abuts against the bottom or inner wall step of the cylindrical housing 1, and the other end abuts against the stop block 8. When the telescopic measuring rod 3 extends or retracts, the stop block 8 slides along the inner wall of the cylindrical housing 1, guiding and limiting the movement of the telescopic measuring rod 3. This ensures the straightness and stability of the axial movement of the telescopic measuring rod 3, preventing it from deviating or jamming. At the same time, the structural design of the stop block 8 allows the elastic force of the elastic component 4 to be evenly transmitted to the telescopic measuring rod 3, ensuring smooth measurement and accurate detection results.

[0034] In an exemplary embodiment of this application, the elastic component 4 is a spring.

[0035] In this embodiment, a compression spring is used, which is fitted onto the outside of the telescopic measuring rod 3 or disposed inside the cylindrical housing 1. One end of the spring abuts against the stepped surface of the inner wall of the cylindrical housing 1, and the other end abuts against the stop block 8 of the telescopic measuring rod 3. As a standard component, the spring has the advantages of low cost, easy installation, and stable elastic force, and can provide a continuous and constant elastic force for the telescopic measuring rod 3, ensuring that the movable wheel 5 always maintains close contact with the furnace wall, thereby truly reflecting the unevenness and undulation of the furnace wall surface.

[0036] In an exemplary embodiment of this application, the lengths of the dented abnormality indication area 301, the normal indication area 302, and the convex abnormality indication area 303 along the axial direction of the telescopic measuring rod 3 are 20 mm.

[0037] In this embodiment, the parallel dimensions of the furnace head on the machine side are 420mm and on the coke side are 480mm, with an error of ±10mm for both. Three indicator zones are each 20mm long, with the 20mm range of the normal indicator zone 302 corresponding to the allowable error range of ±10mm for the standard dimensions. When the base of the casing 1 is within the normal indicator zone 302, it indicates that the current measured dimension is within the allowable error range. The 20mm indicator zone length precisely matches the allowable error range of the furnace head dimensions, making the detection criteria intuitive and clear. Operators can directly determine whether the detection result is qualified without conversion, improving detection efficiency and interpretation accuracy.

[0038] In an exemplary embodiment of this application, the detection head is provided with a first internal thread interface 101, and the extension rod 7 is provided with an external thread connection part 701, which is threadedly connected to the first internal thread interface 101.

[0039] In this embodiment, the first internal thread interface 101 is located at the center of the cylindrical housing 1 along the axial direction. The external thread connection part 701 at the top of the extension rod 7 is screwed into the first internal thread interface 101 to achieve a fixed connection between the extension rod 7 and the detection head. The threaded connection structure is simple, reliable, and easy to assemble and disassemble, ensuring that the detection head will not come loose or wobble from the extension rod 7 during the measurement process, thus ensuring the stability of the detection head and the reliability of the measurement data when measuring at heights.

[0040] In an exemplary embodiment of this application, the extension rod 7 includes at least one rod body, and each rod body has an external threaded connection portion 701 and a second internal threaded interface 702 at both ends along the axial direction. The second internal threaded interface 702 is used to threadedly connect with the external threaded connection portion 701 of the rod body.

[0041] In this embodiment, when the length of the extension rod 7 needs to be increased, the external threaded connection 701 of another rod is screwed into the second internal threaded interface 702 of the previous rod. This process is repeated to extend the rod as needed according to the actual height. The rods are connected end-to-end by internal and external threads, allowing operators to flexibly increase or decrease the number of rods according to the actual height of the carbonization chamber. This satisfies the testing requirements of coke ovens of different heights and facilitates disassembly, storage, and transportation after use.

[0042] In an exemplary embodiment of this application, the extension rod 7 includes three rod sections connected by threads in sequence, each with a length of 1.5m to 2m.

[0043] In this embodiment, taking a 6-meter-high large coke oven as an example, three sections of poles, each 1.5m to 2m in length, are connected sequentially, resulting in a total length of 4.5m to 6m, sufficient to lift the detection head to the top of the carbonization chamber for inspection. The length specifications of the three pole sections have been verified through on-site testing, ensuring comprehensive coverage of the entire inspection range of the 6-meter coke oven from bottom to top. Furthermore, this length specification facilitates single-person operation and carrying, and the entire pole exhibits good rigidity when all three sections are connected, resisting bending and deformation, thus guaranteeing the stability and operational controllability of high-altitude inspections.

[0044] The working principle involves using an elastic component 4 to drive a telescopic measuring rod 3 to extend out of the cylindrical housing 1 and maintain close rolling contact with the furnace wall in conjunction with the wheel assembly. This ensures that the extension of the telescopic measuring rod 3 accurately reflects the deformation of the furnace wall, and the size and status of the furnace head are displayed visually by the marking section. This enables rapid and accurate judgment of the furnace head deformation. Simultaneously, the extension rod 7 raises the detection head to a high position, allowing operators to conduct continuous testing of the entire height from the top to the bottom of the carbonization chamber from a safe area outside the furnace without the need for scaffolding or entering the furnace. This significantly reduces safety risks such as falls from heights, high-temperature burns, and gas inhalation, eliminates the hazards of personnel entering the furnace, and greatly simplifies the cumbersome preparation process of traditional furnace shutdown and cooling with firebreak construction. It also reduces the shutdown time for a single test from over 16 hours to less than 40 minutes, effectively solving the technical problems of high safety risks, low detection efficiency, long shutdown time, and measurement accuracy affected by tool damage and unclear readings in existing technologies.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A testing tool for a coke oven head, characterized in that, include: The detection head has a cylindrical shell, and a fixed measuring rod is provided at one end of the cylindrical shell along the axial direction; A telescopic measuring rod is disposed inside the cylindrical housing, with one end of the telescopic measuring rod extending out of the cylindrical housing and capable of axially extending and retracting relative to the cylindrical housing; An elastic component is disposed inside the cylindrical housing and connected to the telescopic measuring rod. The elastic component is used to provide the telescopic measuring rod with an elastic force that extends out of the cylindrical housing. A roller assembly for rolling contact with the furnace wall, the roller assembly including a movable roller and a stationary roller, the movable roller being mounted on the telescopic measuring rod and the stationary roller being mounted on the fixed measuring rod; An indicator section is provided on the telescopic measuring rod to indicate the furnace head size status corresponding to the extension amount of the telescopic measuring rod; An extension rod, detachably connected to the detection head, is used to lift the detection head to the detection position.

2. The detection tool for the coke oven head according to claim 1, characterized in that: The marking section includes a recessed abnormality indication area, a normal indication area, and a protruding abnormality indication area, which are located on the telescopic rod and arranged sequentially along the axial direction of the telescopic measuring rod.

3. The detection tool for the coke oven head according to claim 2, characterized in that: The dented abnormality indication area is a yellow marked area, corresponding to the dented state of the stove head; The normal indicator area is a green area, corresponding to the normal range of burner head size; The abnormal protrusion indication area is marked in red, corresponding to the protruding state of the burner head.

4. The detection tool for the coke oven head according to claim 3, characterized in that: The marking section is made of three-color heat shrink tubing and is fitted onto the outer wall of the telescopic measuring rod.

5. The detection tool for the coke oven head according to claim 1, characterized in that: The telescopic measuring rod has a stop block at one end inside the cylindrical shell. The stop block is connected to the elastic component and slides against the inner wall of the cylindrical shell.

6. The detection tool for the coke oven head according to claim 1, characterized in that: The elastic component is a spring.

7. The detection tool for the coke oven head according to claim 2, characterized in that: The length of the concave abnormality indication area, the normal indication area, and the convex abnormality indication area along the axial direction of the telescopic measuring rod is 20mm.

8. The detection tool for the coke oven head according to claim 1, characterized in that: The detection head is provided with a first internal thread interface, and the extension rod is provided with an external thread connection part, which is threadedly connected to the first internal thread interface.

9. The detection tool for the coke oven head according to claim 8, characterized in that: The extension rod includes at least one rod body, and each rod body has an external threaded connection part and a second internal threaded interface at both ends along the axial direction. The second internal threaded interface is used to thread into the external threaded connection part of the rod body.

10. The detection tool for the coke oven head according to claim 9, characterized in that: The extension rod comprises three sections of rod body connected by threads in sequence, each section having a length of 1.5m to 2m.

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