Universal coke oven temperature measuring device capable of being adjusted on line
Through the spherical bearing structure and refractive optical path design, the online adjustment problem of the coke oven vertical fire channel temperature measurement device is solved, the temperature measurement accuracy and stability are improved, the maintenance process is simplified, and the fiber loss is reduced.
Patent Information
- Application Number
- CN202520998630.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2035-05-21
AI Technical Summary
The existing coke oven vertical fire channel temperature measurement device cannot be adjusted online, resulting in the temperature measurement accuracy being affected by the expansion deformation and vibration of the furnace body, the maintenance process is cumbersome and the fiber loss is serious.
The spherical bearing structure is used to achieve universal adjustment of the lens part. The infrared light path is transmitted in refraction form. The connection is threaded, and is equipped with air source to purge and cool down to avoid bending and cumbersome disassembly of the optical fiber.
The correction of the online temperature measurement device is realized, which improves the temperature measurement accuracy and stability, reduces fiber losses and simplifies the maintenance process.
Smart Images
Figure CN223064704U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of temperature measurement of vertical flues in a coke oven combustion chamber, and particularly relates to a universal on-line adjustable coke oven temperature measurement device. Background Art
[0002] The temperature of the vertical flue in a coke oven is an important parameter for coking production and process control; it is also an important index for quantifying the heating management of a coke oven, and is directly related to the quality and output of coke and the service life of the coke oven. Precise control of the vertical flue temperature requires precise temperature measurement equipment. With the wide application of infrared on-line thermometers in the vertical flues of coke ovens in recent years, optical lenses for vertical flue temperature measurement have also been widely used.
[0003] At present, the vertical flue temperature measurement lens device used in a coke oven has a fixed acquisition position after construction and installation. When realigning, the device needs to be disassembled, resulting in the inability of the temperature measurement system to work, and it does not have the function of on-line adjustment during the operation of the temperature measurement system. In this way, it is impossible to timely correct the offset of the lens acquisition position caused by factors such as furnace body expansion and deformation and vibration of the top carriage during operation, which seriously affects the temperature measurement accuracy. In addition, when calibrating and correcting the position, the parts installed on the sight hole cover need to be removed to use the lens aiming device to align the position and angle of the sight hole cover. After alignment, the sight hole cover needs to be re-welded and fixed, which greatly increases the maintenance time and cost. Moreover, the infrared light path is in a direct form, so when installing, the optical fiber laid horizontally needs to be bent at least 90° to connect to the lens installed vertically downward, increasing the optical fiber loss and affecting the measurement effect. The connection between components uses a large number of bolt and other connection standard parts, resulting in cumbersome disassembly and maintenance operations. Content of the Utility Model
[0004] In order to overcome the deficiencies of the prior art, the utility model provides a universal on-line adjustable coke oven temperature measurement device, which uses a spherical bearing structure to enable the lens part to adjust the angle through a universal adjustment seat, realizing on-line adjustment and calibration of the acquisition and aiming position; the acquisition and temperature measurement infrared light path adopts a refraction form and is then transmitted through an optical fiber to avoid optical fiber loss caused by bending the optical fiber and ensure accurate transmission; gas source purging and cooling are adopted to prevent damage to the device due to excessive temperature and attachment of furnace dust; the connection of the main components uses threaded connection instead of bolt and other standard part connections, making disassembly and maintenance more convenient.
[0005] In order to achieve the above object, the utility model is realized by adopting the following technical solutions:
[0006] A universal on-line adjustable coke oven temperature measuring device, comprising a lens part, a universal adjusting seat, a purging connecting pipe, a furnace cover part and a gland. The gland is arranged on the top of the universal adjusting seat. The lens part includes a lens barrel, a lens holder, a positioning lens, a first set screw, a lens, a refraction lens and an optical fiber connector. The lens part is arranged above the universal adjusting seat through the threaded connection of the lens barrel and the gland. The lens holder is arranged at the top inside the lens barrel, the positioning lens is arranged at the top of the lens holder, the refraction lens with an angle is arranged at the bottom of the lens holder, and a plurality of first set screws are arranged through the side wall of the lens barrel on the circumferential outer side of the lens holder; the lens is arranged at the lower part inside the lens barrel; the optical fiber connector is arranged on the side wall of the lens barrel in the refraction direction of the refraction lens. The universal adjusting seat is arranged above the purging connecting pipe. A spherical bearing is arranged inside the universal adjusting seat. The spherical bearing is composed of a spherical bearing inner ring and a spherical bearing outer ring. The spherical bearing inner ring is connected with the purging connecting pipe, and the spherical bearing outer ring is connected with the lens part through the gland. The purging connecting pipe is arranged above the furnace cover part, and a gas source pipe joint is arranged on the side of the purging connecting pipe.
[0007] Further, the lens part further includes a first protective lens and a protective cover. The first protective lens is arranged at the bottom inside the lens barrel; the protective cover is arranged at the top of the lens barrel.
[0008] Further, the universal adjusting seat further includes a base, a compression sleeve, a disc spring and a second set screw. The spherical bearing outer ring is sleeved with the compression sleeve and the base in sequence and is locked and fixed through the second set screw. The top of the base is fixedly connected with the gland through threads. A disc spring is arranged between the universal adjusting seat and the gland.
[0009] Further, the purging connecting pipe includes a buffer pipe, a connecting ring, a connecting sleeve and a connecting pipe. The connecting ring is a reverse circular ring connection structure. The outer wall of the top of the upper circular ring of the connecting ring is provided with threads and is threadedly connected with the spherical bearing inner ring of the universal adjusting seat; a connecting sleeve is arranged inside the reverse lower circular ring of the connecting ring. The connecting sleeve is respectively connected with the buffer pipe and the connecting pipe, so that the buffer pipe and the connecting pipe form a concentric sleeve structure; a gas source pipe joint is arranged on one side of the connecting pipe.
[0010] Further, the furnace cover part includes a transition seat, a sight hole cover and a lead-out pipe. The transition seat is threadedly connected with the purging connecting pipe. The transition seat is arranged inside the sight hole cover. The sight hole cover is arranged inside the sight hole of the coke oven vertical flue. The lead-out pipe is arranged inside the transition seat and extends into the coke oven vertical flue.
[0011] Further, the purging connecting pipe further includes a second protective lens. The second protective lens is arranged inside the upper part of the purging connecting pipe.
[0012] Compared with the prior art, the beneficial effects of the present utility model are:
[0013] 1) The universal adjusting base uses spherical bearings to adjust the angles between the lens part, the furnace cover part and the purging connecting pipe, enabling the temperature measuring device to be adjusted and calibrated online in any azimuth during operation to collect and aim at the position, and also to adjust the temperature at any position in the vertical flue online. The temperature measurement adjustment is flexible and reliable, with a wide radiation surface for measurement, improving the temperature measurement accuracy and stability.
[0014] 2) The lens of the temperature measuring device is used to collect and focus the infrared light signal of the coke oven temperature. The infrared light signal of the coke oven temperature is refracted by the refracting lens. The refracted infrared light signal is transmitted to the optical fiber at the optical fiber connector, and then transmitted to the temperature measuring instrument over a long distance through the optical fiber. The infrared light path adopts a refraction form, without bending the optical fiber, reducing the optical fiber loss and avoiding damage to the optical fiber caused by bending. The refracting lens is finely adjusted by the setscrew to ensure the accurate transmission of the infrared light signal, reducing the light loss and enabling the signal to be transmitted accurately and quickly.
[0015] 3) The connection positions of the temperature measuring device all adopt threaded connection methods, which are easy to install and disassemble. The lens part, the universal adjusting base and the purging connecting pipe are separately connected and can be independently overhauled. The operation is simple, easy to maintain, and convenient for repair and replacement.
[0016] 4) A gas source pipe joint is provided on the purging connecting pipe to cool down and purge the temperature measuring device, preventing damage to the device due to excessive temperature and preventing dust in the furnace from adhering to the protective lens and affecting signal collection, ensuring the transmission of the temperature measuring infrared light signal, improving the accuracy of signal transmission, and enhancing the temperature measurement accuracy.
[0017] 5) The lens part can rotate freely relative to the purging connecting pipe, facilitating the adjustment of the relative positions of the optical fiber connector and the gas source pipe joint according to the directions of the optical fiber and the gas source pipeline during on-site installation. The installation is convenient, the joint connection is accurate, avoiding problems such as winding and bending affecting the conveying pipeline, improving the installation accuracy, enhancing the transmission accuracy of the optical fiber signal, and improving the purging and cooling function of the purging gas. Description of the Drawings
[0018] Figure 1 is a schematic structural diagram of a universal on-line adjustable coke oven temperature measuring device described in the present utility model.
[0019] In the figure: 1, positioning lens; 2, protective cover; 3, first set screw; 4, lens holder; 5, refracting lens; 6, lens barrel; 7, gland; 8, lens; 9, second rubber ring; 10, second retaining ring; 11, first protective lens; 12, second set screw; 13, base; 14, third retaining ring; 15, third rubber ring; 16, gas source pipe joint; 17, connecting pipe; 18, lead-out pipe; 19, viewing hole cover; 20, transition seat; 21, buffer pipe; 22, connecting sleeve; 23, connecting ring; 24, second protective lens; 25, inner ring of spherical bearing; 26, outer ring of spherical bearing; 27, compression sleeve; 28, disc spring; 29, second sealing ring; 30, washer; 31, fiber optic connector; 32, screw; 33, gasket; 34, first sealing ring; 35, first rubber ring; 36, first retaining ring. Detailed implementation mode
[0020] The following further explains the detailed implementation mode of the present utility model in conjunction with the attached drawings:
[0021] As Figure 1 shown, the working principle of a universal online adjustable coke oven temperature measuring device: The temperature measuring device collects and converges infrared light signals through the lens 8. After being refracted by the refracting lens 5, the infrared light signals are transmitted to the optical fiber at the fiber optic connector 31. The refracting lens 5 fine-tunes the refraction angle of the converged infrared light signals relative to the fiber optic connector 31 by adjusting the tightness of the first set screw 3 to accurately align with the optical fiber. A spherical bearing is used in the universal adjustment seat to adjust and correct the acquisition position angle online. The universal adjustment seat is threadedly connected to the purge connecting pipe through the inner ring 25 of the spherical bearing and is arranged on the purge connecting pipe. The purge connecting pipe is fixedly connected to the furnace cover part; the outer ring 26 of the spherical bearing is fixedly connected to the lens part. The included angle between the lens part and the fixed furnace cover part can be finely adjusted in any direction through the spherical bearing, with a wide temperature measurement radiation surface, improving the temperature measurement accuracy and stability. A gas source pipe joint 16 is arranged on the purge connecting pipe to connect to the purge cooling gas source pipeline to cool down and purge the temperature measuring device, preventing damage to the device due to excessive temperature and preventing furnace dust from adhering to the second protective lens 24 and affecting signal acquisition.
[0022] As Figure 1 shown, a universal online adjustable coke oven temperature measuring device includes a lens part, a universal adjustment seat, a purge connecting pipe, a furnace cover part, and a gland 7. The gland 7 is arranged on the top of the universal adjustment seat. The lens part is threadedly connected to the gland 7 through the lens barrel 6 and is arranged above the universal adjustment seat. A second sealing ring 29 is arranged between the gland 7 and the lens barrel 6 for sealing to prevent dust and water. The universal adjustment seat is arranged above the purge connecting pipe, and the purge connecting pipe is arranged above the furnace cover part.
[0023] The lens unit includes a positioning lens 1, a protective cover 2, a first setscrew 3, a lens holder 4, a refractive lens 5, a lens barrel 6, a lens 8, a second rubber ring 9, a second retaining ring 10, a first protective lens 11, a washer 30, an optical fiber connector 31, a screw 32, a gasket 33, a first sealing ring 34, a first rubber ring 35, and a first retaining ring 36. At the top inside the lens barrel 6, there is a lens holder 4. On the top of the lens holder 4, the positioning lens 1 is tightly fixed by the first retaining ring 36. Between the positioning lens 1 and the lens holder 4, there is a first rubber ring 35. The positioning lens 1 is used for positioning and aiming, the first retaining ring 36 is used for installing and fixing the positioning lens 1, and the first rubber ring 35 is used for protecting the positioning lens 1. The bottom of the lens holder 4 is connected and fixed to the angled refractive lens 5 through the screw 32 and the gasket 33. The refractive lens 5 refracts the infrared light signal of the coke oven temperature. On the outer circumference of the lens holder 4, several first setscrews 3 pass through the lens barrel 6. By adjusting the tightness of the first setscrews 3 at different positions around the circumference, the angle of the refractive lens 5 is finely adjusted, so as to adjust the refractive angle of the infrared light signal converging on the refractive lens 5 relative to the optical fiber connector 31, making the infrared light signal accurately aligned with the optical fiber and reducing the optical signal loss. The lens 8 is fixed inside the lower part of the lens barrel 6 by the second retaining ring 10. The lens 8 collects and converges the infrared light signal of the coke oven temperature. At the bottom inside the lens barrel 6, there is a first protective lens 11. Between the lens 8 and the second retaining ring 10, there is a second rubber ring 9. The second retaining ring 10 and the second rubber ring 9 are used for installing the lens 8 and the first protective lens 11, and the second rubber ring 9 also plays a role in protecting the lens 8. On the side wall of the lens barrel 6 in the refraction direction of the refractive lens 5, there is an optical fiber connector 31. Between the optical fiber connector 31 and the lens barrel 6, there is a washer 30. The infrared light signal is refracted by the refractive lens 5 and then transmitted to the optical fiber at the optical fiber connector 31, and then transmitted over a long distance through the optical fiber to the temperature measuring instrument. The protective cover 2 is arranged on the top of the lens barrel 6. The protective cover 2 and the lens barrel 6 are sealed by the first sealing ring 34. The protective cover 2 and the first sealing ring 34 play a role in dust and water protection.
[0024] The universal adjusting seat includes a spherical bearing, a base 13, a compression sleeve 27, a disc spring 28 and a second setscrew 12. A spherical bearing is arranged inside the universal adjusting seat. The spherical bearing consists of a spherical bearing inner ring 25 and a spherical bearing outer ring 26. Threads are provided on the inner circumference of the spherical bearing inner ring 25 for threaded connection with the purging connecting pipe, and the universal adjusting seat is arranged above the purging connecting pipe. The spherical bearing outer ring 26 is sequentially sleeved with the compression sleeve 27 and the base 13 and is locked and fixed by the second setscrew 12. The top of the base 13 is fixedly connected with the gland 7 by threads. Since the spherical bearing inner ring 25 is fixedly connected with the purging connecting pipe, the purging connecting pipe is arranged above the furnace cover part, and the spherical bearing outer ring 26 is fixedly connected with the lens part through the gland 7 and the base 13. Therefore, the lens part can adjust the angle with the furnace cover part through the spherical bearing. During the operation of the temperature measuring device, when the lens part deviates due to the expansion and deformation of the furnace body or the vibration of the overhead crane on the furnace top, and it is necessary to adjust and correct the acquisition position angle online, loosen the second setscrew 12 and adjust the universal adjusting seat, then the included angle between the lens part and the fixed furnace cover part can be adjusted in any direction. Because the lens part is far from the infrared light signal acquisition point, a small angle change can bring about a flexible adjustment of the acquisition position. After adjustment, tighten the second setscrew 12 again, and the second setscrew 12 plays a role in anti-loosening and fixing. A disc spring 28 is arranged between the universal adjusting seat and the gland 7 for pressing and sealing. The base 13 is used for installing the spherical bearing, and the compression sleeve 27 transmits the pressing force generated by the elasticity of the disc spring 28. The elastic pressing force of the disc spring 28 presses the spherical bearing outer ring 26 and the spherical bearing inner ring 25 together, so as not to affect the adjustment accuracy due to loosening during fine adjustment of the position.
[0025] The purging connecting pipe includes a buffer pipe 21, a connecting ring 23, a connecting sleeve 22, a connecting pipe 17 and a gas source connector 16. The connecting ring 23 has a reverse circular ring connection structure. Threads are provided on the outer wall of the top of the upper circular ring of the connecting ring 23 for threaded connection with the spherical bearing inner ring 25 of the universal adjusting seat. A connecting sleeve 22 is arranged inside the reverse lower circular ring of the connecting ring 23. The connecting sleeve 22 connects the buffer pipe 21 and the connecting pipe 17 respectively, so that the buffer pipe 21 and the connecting pipe 17 form a concentric sleeve structure, with the buffer pipe 21 inside and the connecting pipe 17 outside. The buffer pipe 21 buffers the purging gas blown in and isolates impurities. The connecting pipe 17 is used to connect the lower furnace cover part. The connecting sleeve 22 is made of a non-metallic material and plays a role in sealing and heat insulation. A gas source connector 16 is arranged on one side of the connecting pipe 17. The gas source connector 16 is connected to the purging and cooling gas source pipeline to cool down and purge the temperature measuring device, preventing damage to the device due to excessive temperature and preventing furnace dust from adhering to the second protective lens 24 and affecting signal acquisition.
[0026] The furnace lid part includes a transition seat 20, a sight hole cover 19 and a lead-out pipe 18. The transition seat 20 is threadedly connected to the connecting pipe 17 of the purging connecting pipe to fix the purging connecting pipe above the furnace lid part. The transition seat 20 is arranged inside the sight hole cover 19, and the sight hole cover 19 is arranged in the sight hole of the coke oven vertical flue. The lead-out pipe 18 is arranged inside the transition seat 20, and the lead-out pipe 18 extends into the coke oven vertical flue. The lead-out pipe 18 is used for converging purging gas and blocking the laterally flowing soot.
[0027] The purging connecting pipe further includes a second protective lens 24, a third retaining ring 14 and a third rubber ring 15. The second protective lens 24 is arranged inside the upper pipe of the purging connecting pipe and fixed by the third retaining ring 14. A third rubber ring 15 is arranged between the second protective lens 24 and the purging connecting pipe. The third retaining ring 14 and the third rubber ring 15 are used for installing the second protective lens 24.
[0028] The above is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.
Claims
1. A universal online adjustable coke oven temperature measuring device, comprising a lens part, a universal adjusting seat, a purging connecting pipe, a furnace cover part and a gland, the gland is arranged at the top of the universal adjusting seat, and is characterized in that, The described lens part includes a lens barrel, a lens holder, a positioning lens, a first set screw, a lens element, a refractive lens, and an optical fiber connector. The lens part is arranged above the universal adjusting seat through the threaded connection of the lens barrel and the gland. At the top inside the lens barrel, a lens holder is provided. At the top of the lens holder, a positioning lens is provided. At the bottom of the lens holder, a refractive lens with an angle is provided. Several first set screws are arranged through the outer circumference of the lens holder and the lens barrel. Inside the lower part of the lens barrel, a lens element is provided. An optical fiber connector is provided on the side wall of the lens barrel in the refraction direction of the refractive lens. The universal adjusting seat is arranged above the purge connection pipe. A spherical bearing is arranged inside the universal adjusting seat. The spherical bearing consists of an inner ring of the spherical bearing and an outer ring of the spherical bearing. The inner ring of the spherical bearing is connected to the purge connection pipe, and the outer ring of the spherical bearing is connected to the lens part through the gland. The purge connection pipe is arranged above the furnace cover part, and a gas source connector is provided on the side of the purge connection pipe.
2. The universal online adjustable coke oven temperature measuring device according to claim 1, characterized in that The lens part further includes a first protective lens and a protective cover. The first protective lens is provided at the bottom inside the lens barrel. The protective cover is provided on the top of the lens barrel.
3. A universal online adjustable coke oven temperature measuring device according to claim 1, characterized in that The universal adjusting seat further includes a base, a compression sleeve, a disc spring, and a second set screw. The outer ring of the spherical bearing is sleeved with the compression sleeve and the base in sequence and is locked and fixed through the second set screw. The top of the base is fixedly connected to the gland through threads. A disc spring is arranged between the universal adjusting seat and the gland.
4. A universal online adjustable coke oven temperature measuring device according to claim 1, characterized in that, The purge connection pipe includes a buffer pipe, a connecting ring, a connecting sleeve, and a connecting pipe. The connecting ring is a reverse circular ring connection structure. Threads are provided on the outer wall of the top of the upper circular ring of the connecting ring for threaded connection with the inner ring of the spherical bearing of the universal adjusting seat. A connecting sleeve is arranged inside the reverse lower circular ring of the connecting ring. The connecting sleeve is connected to the buffer pipe and the connecting pipe respectively, so that the buffer pipe and the connecting pipe form a concentric sleeve structure. A gas source connector is provided on one side of the connecting pipe.
5. The universal online adjustable coke oven temperature measuring device according to claim 1, characterized in that The furnace cover part includes a transition seat, a sight hole cover, and an outlet pipe. The transition seat is threadedly connected to the purge connection pipe. The transition seat is arranged inside the sight hole cover. The sight hole cover is arranged inside the sight hole of the coke oven vertical flue. An outlet pipe is arranged inside the transition seat, and the outlet pipe extends into the coke oven vertical flue.
6. The universal online adjustable coke oven temperature measuring device according to claim 1, characterized in that The purge connection pipe further includes a second protective lens. The second protective lens is provided inside the upper part of the purge connection pipe.