Gas drainer overflow port endoscope convenient to maintain

Abstract

The invention belongs to the technical field of gas drainage equipment, and particularly relates to a gas drainer overflow port endoscope convenient to maintain. A main body of the overflow port endoscope is a transparent cylindrical lens barrel, wherein a barrel body of the lens barrel is symmetrically divided into an observation side and a back side along a meridian plane; the joint of the upper port of the lens cone and the overflow port is coated with anti-corrosion sealing cloth and is fixed through a hoop; the joint of the lower port of the lens cone and the overflow pipe is coated with anti-corrosion sealing cloth and is fixed through a hoop; a condensate water drainage groove is formed in the inner wall, close to the overflow port, of the observation side of the lens cone, and the condensate water drainage groove is composed of a horizontal arc section and arc sections which are connected to the two ends of the horizontal arc section through transition arc sections and incline downwards; the angle theta of the central angle corresponding to the horizontal arc section is larger than or equal to 120 degrees and smaller than or equal to 180 degrees. The downwardly inclined arc section extends to the inner wall of the back side of the lens barrel. The endoscope can avoid the pollution problem of the observation window, and has a quick mounting and dismounting function.

Description

Technical Field

[0001] This invention belongs to the technical field of gas drainage equipment, specifically relating to an endoscope for the overflow port of a gas drainer that is easy to maintain. Background Technology

[0002] In industrial production, the stable operation of gas systems is crucial, and gas drainers, as an indispensable component of gas pipeline systems, directly affect the safety and reliability of the entire gas transportation process. Gas drainers play a vital role in removing condensate from gas pipelines, with the overflow port serving a key function. By observing the drainage from the overflow port, operators can accurately determine whether the water level in the gas pipeline is normal and whether there are any blockages or other malfunctions.

[0003] However, both blast furnace gas and coke oven gas contain various chemical components in their condensate. These components, upon volatilization, can cause serious air pollution, especially substances like tar and naphthalene in coke oven gas, which not only threaten the atmospheric environment but also pose significant health risks. Therefore, sealing the overflow outlet of gas drainers is crucial and urgent.

[0004] Currently, flange-type connections are commonly used in the application of endoscopes at the overflow ports of gas drainers. However, this traditional connection method has many drawbacks that cannot be ignored. Specifically, the following series of problems urgently need to be solved: 1. The endoscope body and flange are connected as a single unit. This structure increases the difficulty of the manufacturing process and requires strict material specifications, resulting in a significant increase in production costs. If a part of the endoscope is partially damaged, the entire endoscope must be replaced because the damaged part cannot be replaced individually, further increasing the operating and maintenance costs of the equipment.

[0005] 2. During installation, to accommodate the flange-connected endoscope, the overflow port must be modified by welding a flange onto it. This not only increases the difficulty and complexity of the installation work, resulting in a large workload, but may also damage the original gas drain device structure, affecting its overall performance and service life.

[0006] 3. The flange connection uses a multi-screw fastening method. There are many screws, and during installation and disassembly, operators need to tighten or loosen each screw one by one. The operation process is extremely cumbersome, which consumes a lot of manpower and time costs, and the installation and disassembly work efficiency is extremely low.

[0007] 4. During use, the observation port is highly susceptible to contamination from rust, dust, condensate, and other impurities carried by the gas pipeline, resulting in a blurred field of vision. Existing endoscopes are expensive, and addressing contamination of the observation port requires disassembly and cleaning, necessitating frequent cleaning and maintenance. This not only increases the workload and burden on staff but also consumes a significant amount of time, reducing work efficiency.

[0008] Therefore, from a cost perspective, flange-connected endoscopes have a complex manufacturing process, requiring high material and processing costs, resulting in a high overall production cost. During installation and disassembly, the use of multiple screws for fastening makes the operation cumbersome, consuming significant manpower and time, and making installation and disassembly extremely difficult. Furthermore, installation often requires additional modifications to the overflow port, further increasing the complexity and cost. Even more problematic is that during use, various impurities and condensate from the gas pipeline easily adhere to the observation port surface, causing rapid blurring and significantly affecting the observation results, thus drastically shortening the cleaning cycle.

[0009] In summary, the five issues mentioned above have had a severely negative impact on the company's operating costs, the labor intensity of its employees, and their work efficiency. Therefore, to effectively address these problems, there is an urgent need to design an easy-to-maintain endoscope for the overflow port of a drain device that is low in manufacturing cost, easy to install and disassemble, and has low usage and maintenance costs. Summary of the Invention

[0010] The purpose of this invention is to address the problems of complex installation procedures, high maintenance difficulty and cost, and easy contamination of the endoscope observation window by condensate containing impurities such as rust, in current gas drain overflow port endoscopes. This invention provides an easy-to-maintain gas drain overflow port endoscope that avoids contamination of the observation window and has quick installation and disassembly functions.

[0011] During the research, it was discovered that water in the overflow pipe and drain evaporates. When the external temperature is low, the water vapor produced by evaporation cools and condenses on the pipe wall above the overflow port, forming condensate. This condensate contains a large amount of impurities such as rust. When this rust-containing wastewater flows to the observation side of the endoscope, it causes severe contamination, thus affecting the viewing line of sight. Therefore, the overflow port endoscope described in this invention, while ensuring the maximum drainage capacity of the overflow port, also cleverly incorporates a condensate drainage channel structure on the endoscope to effectively change the flow direction of the condensate from the overflow port, thereby significantly reducing the degree of contamination on the observation side.

[0012] The specific technical solution is as follows: An easy-to-maintain endoscope for the overflow port of a gas drainer has a main body of a transparent cylindrical tube, which is symmetrically divided into an observation side and a back side along the meridional plane. The drainage situation of the overflow port can be clearly observed through the observation side of the tube.

[0013] (Inner diameter of the lens barrel - outer diameter of the overflow port) ≥ 2 mm.

[0014] The connection between the upper endoscope tube and the overflow port is covered with anti-corrosion sealing cloth and secured with clamps; the connection between the lower endoscope tube and the overflow pipe is also covered with anti-corrosion sealing cloth and secured with clamps. This endoscope abandons the traditional bolted hard connection method and adopts a clamp-type quick-release connection method. Furthermore, based on the fact that the connection between the upper endoscope tube and the overflow port is under slight negative pressure during actual production, combined with the soft connection method using anti-corrosion sealing cloth, it can effectively achieve the dual functions of overflow port sealing and pollution prevention, and quick installation and disassembly. This replaces the traditional flange and screw connection, significantly reducing the intensity of disassembly and installation work, greatly improving work efficiency, and providing efficient, convenient, and reliable technical support for observing the water volume of gas drainers.

[0015] A condensate drainage channel is provided on the inner wall of the endoscope tube near the overflow port on the observation side. This channel consists of a horizontal arc segment and downward-sloping arc segments connected to both ends of the horizontal arc segment by transition arc segments. The central angle of the horizontal arc segment is 120°≤θ≤180°. The downward-sloping arc segments extend to the inner wall of the back side of the endoscope tube. After being received by the horizontal segment, the condensate is guided to the back side of the endoscope tube along the downward-sloping arc segments of the condensate drainage channel. This prevents the condensate and any impurities it carries from contaminating the observation side of the endoscope tube. The condensate then flows into the overflow pipe along the observation side of the endoscope tube, ensuring that the field of view remains clear at all times. This greatly improves the observation effect and the performance of the endoscope, effectively extending the endoscope's service life.

[0016] Furthermore, the angle between the tangent of the downwardly inclined arc segment and the vertical plane is 30-45°.

[0017] Furthermore, the angle between the tangent of the downwardly sloping arc segment and the vertical plane is 45°.

[0018] Furthermore, the horizontal arc segment located on the observation side of the microscope tube is symmetrically distributed along a meridional plane perpendicular to the observation side of the microscope tube.

[0019] Furthermore, the depth of the condensate drainage channel is 4-6 mm. This depth range not only meets the requirements for condensate drainage, but more importantly, ensures the design requirement of maximum drainage capacity of the overflow outlet.

[0020] Furthermore, the depth of the condensate drainage channel is 5mm.

[0021] Furthermore, the effective width of the condensate drainage channel is 5-6 mm. This channel width range not only meets the requirements for condensate drainage, but more importantly, it ensures the design requirement of maximum drainage capacity of the overflow outlet.

[0022] Furthermore, the effective width of the condensate drainage channel is 6mm.

[0023] Furthermore, the anti-corrosion sealing cloth is any one of polytetrafluoroethylene cloth, polyvinyl chloride coated cloth, or ethylene-tetrafluoroethylene copolymer cloth.

[0024] Furthermore, the clamps are stainless steel hose clamps; there are two clamps at the connection between the upper end of the endoscope barrel and the overflow port; there are two clamps at the connection between the lower end of the endoscope barrel and the overflow pipe. One clamp is on the endoscope barrel, and the other clamp is on the overflow port / overflow pipe to ensure a tight seal.

[0025] The beneficial effects of this invention are as follows: Compared with the traditional gas drain overflow endoscope, the gas drain overflow endoscope of this invention, which is easy to maintain, has the following advantages: 1. Simple structure and low cost: The overflow port endoscope of this invention features a compact structure. Considering actual site conditions, it abandons the complex structure of traditional endoscopes, adopting a simple and efficient design. Through the optimized split design and flexible connection method, the production cost and manufacturing process of the endoscope are effectively reduced. Furthermore, no adaptation modifications to the original equipment are required, further saving installation costs. Through the split design, material optimization, and precise adaptation to the original overflow port, manufacturing and installation costs are reduced from multiple dimensions. The expected total cost of this device is only about 1 / 3 of the original equipment, significantly reducing the initial equipment investment for enterprises.

[0026] 2. Convenient Maintenance: The modular design allows for easy replacement of the entire endoscope when some components are damaged, eliminating the need for complete replacement. Only the damaged parts need to be replaced, significantly reducing maintenance costs and complexity. This greatly enhances convenience, making the equipment easy to install, disassemble, and maintain, greatly reducing operational difficulty and effectively minimizing manpower requirements.

[0027] 3. Highly Efficient Installation and Disassembly: Utilizing a flexible connection method with sealing cloth and clamps, compared to the traditional rigid connection of flanges and screws, installation and disassembly are much more convenient and faster. Operators do not need to use complicated tools; simple operations are sufficient to complete the installation and disassembly work, significantly improving work efficiency and reducing the labor intensity of on-site employees.

[0028] 4. Significant anti-contamination effect: The design of the condensate drainage channel at the upper part of the observation side fundamentally solves the problem of easy contamination on the observation side of the endoscope tube. By guiding the flow of condensate, condensate mixed with impurities such as rust is discharged to the rear of the observation side of the endoscope tube, effectively improving the cleanliness of the observation side, significantly extending the maintenance cycle of the endoscope, and reducing the cleaning and maintenance workload of on-site staff.

[0029] 5. Comprehensive performance optimization: In terms of service life, the cleaning service life is expected to be extended by 3-5 times; in terms of cleaning and maintenance efficiency, the cleaning and maintenance time of a single unit is shortened from the original 1 hour to less than 20 minutes, significantly improving work efficiency and reducing labor intensity. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the installation of the endoscope at the overflow port of the gas drainer according to the present invention.

[0031] Figure 2 This is a schematic diagram of the structure of the endoscope at the overflow port of the gas drainer described in this invention.

[0032] Figure 3 This is a front view of the endoscope tube structure of the overflow port endoscope of the gas drainer according to the present invention.

[0033] Figure 4 This is a right view of the endoscope tube structure of the overflow port endoscope of the gas drainer according to the present invention.

[0034] Among them, 1 is the gas pipeline, 2 is the downpipe, 3 is the drain, 4 is the overflow port, 5 is the cylinder body, 6 is the overflow pipe, 7 is the wastewater collection tank, 8 is the stainless steel hose clamp, 9 is the back side of the microscope tube, 10 is the observation side of the microscope tube, 11 is the horizontal arc segment, 12 is the downward sloping arc segment, and 13 is the polytetrafluoroethylene cloth. Detailed Implementation

[0035] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] Example 1 The gas drain overflow endoscope, which is easy to maintain, has a transparent cylindrical tube as its main body. The tube body 5 is symmetrically divided into an observation side and a back side along the meridional plane.

[0037] (Inner diameter of the lens barrel - outer diameter of the overflow port) = 2mm.

[0038] The connection between the upper end of the endoscope tube and the overflow port 4 is covered with polytetrafluoroethylene cloth 13 and fixed by two stainless steel hose clamps 8; the connection between the lower end of the endoscope tube and the overflow pipe 4 is covered with polytetrafluoroethylene cloth 13 and fixed by two stainless steel hose clamps 8.

[0039] A condensate drainage channel is provided on the inner wall of the observation side 10 of the microscope tube near the overflow port 4. The condensate drainage channel can be embedded and fixed to the inner wall of the observation side 10 of the microscope tube by welding. The condensate drainage channel is composed of a horizontal arc segment 11 and downwardly sloping arc segments 12 connected to both ends of the horizontal arc segment 11 by transition arc segments; wherein, the angle θ of the central angle corresponding to the horizontal arc segment 11 is 150°; the downwardly sloping arc segment 12 extends to the inner wall of the back side 9 of the microscope tube.

[0040] The angle α between the tangent of the downwardly inclined arc segment 12 and the vertical plane is 45°.

[0041] The horizontal arc segment 11 located on the observation side 10 of the microscope tube is symmetrically distributed along the meridional plane perpendicular to the observation side 10 of the microscope tube.

[0042] The depth of the condensate drainage channel is 5mm; the effective channel width is 6mm.

[0043] In the actual installation process, first insert the overflow port 4 into the upper port of the endoscope tube, wrap the connection with polytetrafluoroethylene cloth 13 for sealing, and tighten the two stainless steel hose clamps 8; then insert the lower port of the endoscope tube into the overflow pipe 6, wrap the connection with polytetrafluoroethylene cloth 13 for sealing, and tighten the two stainless steel hose clamps 8 to complete the installation of the endoscope quickly and firmly.

[0044] During the operation of the gas drainage system, the condensate from the gas pipeline 1 enters the drain 3 via the downpipe 2. The wastewater sequentially passes through the overflow port 4, the endoscope barrel 5, and the overflow pipe 6, finally reaching the wastewater collection tank 7. During this process, the normal flow rate is smoothly discharged through the back side 9 of the endoscope barrel. Simultaneously, a small amount of water vapor cools at the overflow port 4, producing a small amount of condensate. This condensate typically contains impurities such as rust. Guided by the condensate drainage channel, this impure condensate smoothly enters the back side 9 of the endoscope barrel, effectively preventing contamination of the observation side and maintaining a clear field of view, thus providing reliable assurance for operators to accurately observe the drainage situation.

[0045] The easy-to-maintain gas drain overflow endoscope described in this embodiment was used in the blast furnace gas drain overflow port of a coking workshop in an ironmaking plant under winter temperature conditions of -10℃ to 10℃. After 90 days of actual application, the observation side of the endoscope tube was free of rust and water stains and still had a clear field of view.

[0046] Comparative Example 1 The difference from Example 1 is that the angle between the tangent of the downwardly inclined arc segment of the condensate drainage groove of the gas drain overflow endoscope described in this comparative example and the vertical plane is 15°.

[0047] The endoscope at the overflow port of the gas drainer described in the comparative example, which is easy to maintain, has poor drainage effect. After 30 days of actual use, some of the observation side of the endoscope tube has developed rust-containing sewage stains, which obstruct the clarity of the observation field.

Claims

1. An endoscope for the overflow port of a gas drain device that is easy to maintain, characterized in that, The main body is a transparent cylindrical tube, with the tube body symmetrically divided into an observation side and a back side along the meridian. (Inner diameter of the microscope tube - outer diameter of the overflow outlet) ≥ 2 mm; The connection between the upper end of the microscope tube and the overflow port is covered with anti-corrosion sealing cloth and fixed with clamps; The connection between the lower end of the endoscope tube and the overflow pipe is covered with anti-corrosion sealing cloth and fixed with clamps; A condensate drainage channel is provided on the inner wall near the overflow port on the observation side of the microscope tube. The condensate drainage channel is composed of a horizontal arc segment and downward sloping arc segments connected to both ends of the horizontal arc segment by transition arc segments. Among them, the horizontal arc segment corresponds to a central angle of 120°≤θ≤180°; the downward sloping arc segment extends to the inner wall of the back side of the lens tube.

2. The easy-to-maintain gas drain overflow port endoscope according to claim 1, characterized in that, The angle between the tangent of the downward-sloping arc segment and the vertical plane is 30-45°.

3. The gas drain overflow port endoscope as described in claim 2, characterized in that, The angle between the tangent of the downward-sloping arc segment and the vertical plane is 45°.

4. The easy-to-maintain gas drain overflow port endoscope according to claim 1, characterized in that, The horizontal arc segment located on the observation side of the microscope tube is symmetrically distributed along the meridional plane perpendicular to the observation side of the microscope tube.

5. The easy-to-maintain gas drain overflow port endoscope according to claim 1, characterized in that, The depth of the condensate drainage channel is 4-6 mm.

6. The easy-to-maintain gas drain overflow port endoscope according to claim 5, characterized in that, The depth of the condensate drainage channel is 5mm.

7. The easy-to-maintain gas drain overflow port endoscope according to claim 1, characterized in that, The effective width of the condensate drainage channel is 5-6 mm.

8. The easy-to-maintain gas drain overflow port endoscope according to claim 7, characterized in that, The effective width of the condensate drainage channel is 6mm.

9. The easy-to-maintain gas drain overflow port endoscope according to claim 1, characterized in that, The corrosion-resistant sealing cloth is any one of polytetrafluoroethylene cloth, polyvinyl chloride coated cloth, or ethylene-tetrafluoroethylene copolymer cloth.

10. The easy-to-maintain gas drain overflow port endoscope according to claim 1, characterized in that, The clamps are stainless steel hose clamps; there are two clamps at the connection between the upper end of the endoscope tube and the overflow port; there are two clamps at the connection between the lower end of the endoscope tube and the overflow pipe.

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