A steam line purging target plate structure

Abstract

The application discloses a steam pipeline blowing target plate structure, which comprises a steam pipeline body, a connecting pipe, a cover body and a target plate, the connecting pipe is vertically connected to the upper side of the steam pipeline body, the cover body is detachably connected to the pipe opening of the connecting pipe, a support rod assembly is arranged at the bottom of the cover body, the target plate is arranged on the windward surface of the support rod assembly, a limiting piece is arranged on the inner bottom wall of the steam pipeline body and abuts against the leeward surface of the support rod assembly, and the application also relates to the connecting mode of the cover body and the connecting pipe, the position of the target plate, the composition of the support rod assembly, the setting of a limiting sleeve ring and a bracelet, and the connecting and adjusting modes of the support rod assembly and the cover body. The application has the technical effects that the target plate is convenient to install and detach, can be adapted to steam pipeline bodies with different diameters, can ensure stable placement of the target plate and can effectively detect the blowing effect of the steam pipeline.

Description

Technical Field

[0001] This application relates to the field of pipeline purging, and in particular to a steam pipeline purging target plate structure. Background Technology

[0002] In the field of thermal power boiler system installation, the purging effect of steam pipelines plays a crucial role in the long-term safe operation of steam turbines. With the continuous development of the power industry, the application of high-temperature, high-pressure steam pipelines is becoming increasingly widespread, highlighting the growing importance of purging impurities before commissioning. Effective steam pipeline purging ensures the normal operation of steam turbine generator units, reduces equipment failures and maintenance costs, improves power generation efficiency, and is of great significance to the stable operation of the entire power system.

[0003] In traditional steam pipeline purging, a target plate is typically installed inside the steam pipeline to detect impurities. Specifically, a connecting pipe is vertically connected to the upper side of the steam pipeline for installing and removing the target plate. Traditionally, the target plate is directly fixed to the connecting pipe with bolts, allowing it to extend into the steam pipeline. While this method can detect impurities in the steam pipeline to some extent, it also faces several challenges in practical operation.

[0004] However, traditional target plate installation methods have significant drawbacks. Firstly, directly fixing the target plate with bolts makes disassembly and replacement difficult, requiring operators to spend considerable time and effort. This not only reduces work efficiency but also increases the risk of operators coming into contact with high-temperature steam. Secondly, this installation method results in poor target plate stability. Under the impact of high-speed flowing steam, the target plate is prone to displacement or tipping, making it impossible to accurately detect impurities in the steam pipeline and affecting the evaluation of the steam pipeline purging effect. Summary of the Invention

[0005] To facilitate target plate replacement and improve target plate stability during purging, this application provides a steam pipeline purging target plate structure.

[0006] The steam pipeline purging target plate structure provided in this application adopts the following technical solution: A steam pipeline purging target plate structure includes a steam pipeline body, a connecting pipe, a cover, and a target plate. The connecting pipe is vertically connected to the upper side of the steam pipeline body. The cover is detachably connected to the opening of the connecting pipe and seals it. The cover and the connecting pipe are detachably connected. A support rod assembly is provided at the bottom of the cover, and the lower end of the support rod assembly extends to the inner bottom wall of the connecting pipe. The target plate is located on the windward side of the support rod assembly. A limiting member is provided on the inner bottom wall of the steam pipeline body. When the support rod assembly is in place inside the steam pipeline body, the limiting member abuts against the leeward side of the support rod assembly.

[0007] By adopting the above technical solution, the detachable connection between the cover and the connecting pipe simplifies the installation and disassembly process of the target plate. The support rod assembly extends to the inner bottom wall of the steam pipe and cooperates with the limiting component, significantly enhancing the stability of the target plate under high-speed steam impact and preventing displacement or tipping due to vibration or airflow impact. This structure reduces the risk of operators directly contacting high-temperature steam, while the rigid design of the support rod assembly reduces the possibility of deformation, ensuring the reliability of continuous purging. In addition, the windward side of the target plate directly faces the steam flow direction, ensuring effective adhesion of impurities and providing an accurate basis for evaluating the purging effect.

[0008] Preferably, the cover is connected to the opening of the connecting pipe via a flange.

[0009] By adopting the above technical solutions, flange connections provide reliable sealing and pressure resistance, preventing high-temperature steam leakage. Their standardized interface design facilitates quick installation and disassembly, reducing the complexity of on-site construction. Flange connections also allow the use of sealing elements such as spiral wound gaskets, further enhancing system safety and preventing burns or energy loss due to leaks.

[0010] Preferably, the lower end of the target plate abuts against the inner bottom wall of the main body of the steam pipe, and the upper end of the target plate extends into the connecting pipe.

[0011] By adopting the above technical solution, the upper and lower ends of the target plate extend to the inner bottom wall of the connecting pipe and the steam pipe, respectively, covering the entire radial cross-section of the pipe and eliminating the detection blind zone. This design ensures that impurities do not bypass the target plate, improving the accuracy of purging effect evaluation. At the same time, the close contact between the target plate and the inner wall of the pipe reduces the interference of steam turbulence on the target plate, making the stain distribution more uniform and meeting the industry standard requirements for target plate length and coverage.

[0012] Preferably, the support rod assembly includes a first support rod and a second support rod. The upper end of the first support rod is connected to the bottom of the cover, and the target plate is attached to the windward side of the second support rod. The lower end of the first support rod, the upper end of the second support rod, and the upper end of the target plate are overlapped, and the overlapping parts are fixed by connecting bolts.

[0013] By adopting the above technical solution, the segmented structure of the first and second support rods is fixed by connecting bolts, allowing the target plate to expand freely in a high-temperature environment and avoiding deformation or cracking due to thermal stress. The bolted connection at the overlapping part provides flexible adjustability, making it easy to adapt to different pipe sizes, while the split design reduces manufacturing and replacement costs. In addition, this structure disperses the steam impact force and improves overall rigidity.

[0014] Preferably, a limiting collar is fitted between the lower end of the second support rod and the lower end of the target plate.

[0015] By adopting the above technical solution, the limiting collar forms a radial constraint on the second support rod and the lower end of the target plate, further enhancing the vibration resistance and preventing bottom swaying. The gap design between the collar and the support rod allows for thermal expansion while avoiding metal fatigue, thus extending the service life of the device.

[0016] Preferably, a wristband is provided on the outer surface of the cover.

[0017] By adopting the above technical solution, the wristband provides operators with a safe grip point, and combined with the anti-scalding pad design, it reduces the risk of burns from high temperatures when changing target plates. The heat dissipation holes on the wristband promote heat dissipation, improve operating conditions, and make the replacement process more efficient and safer.

[0018] Preferably, the upper end of the support rod assembly is welded and fixed to the bottom of the cover.

[0019] By adopting the above technical solution, the welding and fixing of the support rod assembly to the cover ensures the strength and rigidity of the overall structure, reduces the risk of loosening at the connection points, and is particularly suitable for high-pressure steam environments. The welding method is inexpensive and highly reliable, avoiding the stripping or corrosion problems that can occur with threaded connections.

[0020] Preferably, the support rod assembly is provided with a threaded post at the top and the cover is provided with a threaded sleeve at the bottom. The support rod assembly and the cover are detachable through the threaded engagement of the threaded post and the threaded sleeve. The length of the support rod assembly entering the steam pipe body can be adjusted by adjusting the threaded connection depth of the threaded post in the threaded sleeve to accommodate steam pipe bodies of different diameters.

[0021] By adopting the above technical solution, the fit between the threaded column and the threaded sleeve allows for flexible adjustment of the insertion length of the support rod assembly, enabling the device to quickly adapt to steam pipes of different diameters and improving its versatility. The threaded connection also facilitates disassembly and maintenance, while the adjustment function allows for precise control of the target plate's position within the pipe.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The support rod assembly extends to the bottom wall of the steam pipe and cooperates with the limiting component, which enhances the stability of the target plate under high-speed steam impact and avoids displacement or tipping due to vibration or airflow impact; the target plate is set on the windward side of the support rod assembly to ensure effective adhesion of impurities and stains, providing an accurate basis for evaluating the purging effect; 2. The cover and connecting pipe are connected by flanges, providing reliable sealing and pressure resistance to prevent high-temperature steam leakage. Its standardized interface design facilitates quick installation and disassembly, reducing the complexity of on-site construction. 3. The lower end of the target plate abuts against the bottom wall of the main body of the steam pipe, and the upper end extends into the connecting pipe, covering the entire radial section of the pipe, eliminating the detection blind zone, ensuring that impurities do not bypass the target plate, improving the accuracy of the purging effect assessment, and reducing the interference of steam turbulence on the target plate, making the blemish distribution more uniform. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the steam pipeline purging target plate structure in Embodiment 1 of this application.

[0024] Figure 2 This is a schematic diagram showing the positional relationship between the cover and the support rod assembly in the steam pipeline purging target plate structure of Embodiment 1 of this application.

[0025] Figure 3 This is a schematic diagram of the internal structure of the steam pipeline purging target plate structure in Embodiment 1 of this application.

[0026] Figure 4 This is a schematic diagram of the internal structure of the steam pipeline purging target plate structure in Embodiment 2 of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Steam pipe body; 2. Connecting pipe; 3. Cover; 31. Hand ring; 32. Threaded sleeve; 4. Support rod assembly; 41. First support rod; 42. Second support rod; 43. Threaded column; 5. Target plate; 6. Limiting collar; 7. Limiting component; 8. Flange; 9. Connecting bolt. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] Example 1 The steam pipeline purging target plate 5 structure provided in this application embodiment refers to... Figures 1 to 3The system includes a steam pipe body 1, a connecting pipe 2, a cover 3, a target plate 5, a support rod assembly 4, and a limiting component 7. The connecting pipe 2 is vertically connected to the upper side of the steam pipe body 1. The cover 3 is detachably connected to the opening of the connecting pipe 2 to seal it. The lower end of the support rod assembly 4, located at the bottom of the cover 3, extends to the inner bottom wall of the connecting pipe 2. The target plate 5 is positioned on the windward side of the support rod assembly 4. The limiting component 7 on the inner bottom wall of the steam pipe body 1 abuts against the leeward side of the support rod assembly 4 when it is in place, facilitating the replacement of the target plate 5 and improving its stability during purging. Because the cover 3 is detachably connected to the connecting pipe 2, the installation and removal process of the target plate 5 is simplified. Furthermore, the support rod assembly 4, in conjunction with the limiting component 7, enhances the stability of the target plate 5 under high-speed steam impact, preventing it from shifting or tipping over.

[0030] Specifically, the support rod assembly 4 includes a first support rod 41 and a second support rod 42. The first support rod 41 is generally made of metal, such as stainless steel, which has good strength and corrosion resistance and can adapt to the high temperature and high pressure environment inside the steam pipe. The first support rod 41 is usually square in shape, and its upper end can be fixed to the bottom of the cover 3 by welding. The welded connection can ensure the strength and rigidity of the overall structure and reduce the risk of loosening at the connection, making it particularly suitable for high-pressure steam environments.

[0031] The second support rod 42 can also be made of stainless steel or other metals, and is often square in shape. The target plate 5 is attached to the windward side of the second support rod 42, and the lower end of the second support rod 42 abuts against the inner bottom wall of the steam pipe body 1. The limiting component 7 uses a stop block, and the leeward side of the second support rod 42 abuts against the stop block. The target plate 5 is generally made of a relatively soft metal, such as aluminum, so that impurities can leave obvious marks when impacting the target plate 5. The lower end of the first support rod 41, the upper end of the second support rod 42, and the upper end of the target plate 5 are overlapped, and the overlapping parts are fixed by connecting bolts 9. High-strength alloy steel bolts can be used for connecting bolts 9 to ensure the reliability of the connection. This segmented structure allows the target plate 5 to expand freely in a high-temperature environment, avoiding deformation or cracking due to thermal stress. The bolt connection at the overlapping part also provides flexible adjustability, making it easy to adapt to different pipe sizes. The split design also reduces manufacturing and replacement costs. In addition, this structure can also disperse the steam impact force and improve the overall rigidity.

[0032] A limiting collar 6 is fitted between the lower end of the second support rod 42 and the lower end of the target plate 5. The limiting collar 6 is typically made of metal, such as carbon steel, and it provides radial constraint to the lower ends of the second support rod 42 and the target plate 5, further enhancing vibration resistance and preventing bottom swaying. A certain gap is reserved between the collar and the support rod; this gap design allows for thermal expansion while avoiding metal fatigue, thus extending the service life of the device.

[0033] The cover 3 is connected to the pipe opening of the connecting pipe 2 via a flange 8. The flange 8 is typically made of carbon steel, offering good strength and pressure resistance. The flange 8 connection provides reliable sealing and pressure resistance, preventing high-temperature steam leakage. Its standardized interface design facilitates quick installation and disassembly, reducing the complexity of on-site construction. In the flange 8 connection, sealing elements such as spiral wound gaskets can also be used to further enhance system safety and prevent burns or energy loss due to leakage.

[0034] The lower end of the target plate 5 abuts against the inner bottom wall of the steam pipe body 1, and the upper end extends into the connecting pipe 2. This arrangement allows the target plate 5 to cover the entire radial cross-section of the pipe, eliminating blind spots and ensuring that impurities do not bypass the target plate 5, thus improving the accuracy of purging effect assessment. At the same time, the close contact between the target plate 5 and the inner wall of the pipe reduces the interference of steam turbulence on the target plate 5, resulting in a more uniform distribution of stains, meeting the industry standard requirements for the length and coverage of the target plate 5.

[0035] A wristband 31 is provided on the outer surface of the cover 3. The wristband 31 can be made of heat-insulating plastic material, providing a safe grip point for the operator. Combined with the anti-scalding pad design, it reduces the risk of high-temperature burns when changing the target plate 5. The wristband 31 can also be equipped with heat dissipation holes to promote heat dissipation, improve operating conditions, and make the replacement process more efficient and safe.

[0036] The implementation principle of this embodiment is as follows: The steam pipeline purging target plate 5 structure is detachably connected to the connecting pipe 2 via the cover 3, facilitating the replacement of the target plate 5 and reducing the risk of operators directly contacting high-temperature steam. The cooperation between the support rod assembly 4 and the limiting component 7 enhances the stability of the target plate 5 under high-speed steam impact, reducing the possibility of the target plate 5 shifting or tipping due to vibration or airflow impact. Simultaneously, the reasonable arrangement of the target plate 5 ensures effective adhesion of impurities and stains, providing an accurate basis for evaluating the steam pipeline purging effect. Furthermore, the material selection and connection design of each component improve the reliability and durability of the entire structure, reduce maintenance costs, and represent a significant improvement over existing technologies.

[0037] Example 2 The difference between this embodiment and the above embodiments lies in the connection method between the cover 3 and the support rod assembly 4, as shown in the following figure. Figure 4 In this embodiment, a threaded post 43 is provided at the top of the first support rod 41, and a threaded sleeve 32 is provided at the bottom of the cover 3. The threaded connection between the threaded post 43 and the threaded sleeve 32 is used to achieve a detachable connection. This method is convenient for disassembly and maintenance. At the same time, the length of the support rod assembly 4 entering the steam pipe body 1 can be adjusted by adjusting the thread connection depth of the threaded post 43 in the threaded sleeve 32 to adapt to steam pipe bodies 1 of different diameters.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steam pipeline purging target plate structure, characterized in that: The steam pipe body includes a main body (1), a connecting pipe (2), a cover (3), and a target plate (5). The connecting pipe (2) is vertically connected to the upper side of the main body (1). The cover (3) is detachably connected to the opening of the connecting pipe (2) and is sealed by the cover (3). The cover (3) and the connecting pipe (2) are detachably connected. A support rod assembly (4) is provided at the bottom of the cover (3). The lower end of the support rod assembly (4) extends to the inner bottom wall of the connecting pipe (2). The target plate (5) is provided on the windward side of the support rod assembly (4). A limiting member (7) is provided on the inner bottom wall of the main body (1). When the support rod assembly (4) is in place in the main body (1), the limiting member (7) abuts against the leeward side of the support rod assembly (4).

2. The steam pipeline purging target plate structure according to claim 1, characterized in that: The cover (3) is connected to the opening of the connecting pipe (2) by a flange (8).

3. The steam pipeline purging target plate structure according to claim 1, characterized in that: The lower end of the target plate (5) abuts against the inner bottom wall of the steam pipe body (1), and the upper end of the target plate (5) extends into the connecting pipe (2).

4. The steam pipeline purging target plate structure according to claim 1, characterized in that: The support rod assembly (4) includes a first support rod (41) and a second support rod (42). The upper end of the first support rod (41) is connected to the bottom of the cover (3), and the target plate (5) is attached to the windward side of the second support rod (42). The lower end of the first support rod (41), the upper end of the second support rod (42), and the upper end of the target plate (5) are overlapped, and the overlapping parts are fixed by connecting bolts (9).

5. The steam pipeline purging target plate structure according to claim 4, characterized in that: A limiting collar (6) is fitted between the lower end of the second support rod (42) and the lower end of the target plate (5).

6. The steam pipeline purging target plate structure according to claim 1, characterized in that: A wristband (31) is provided on the outer surface of the cover (3).

7. A steam pipeline purging target plate structure according to any one of claims 1 to 6, characterized in that: The upper end of the support rod assembly (4) is welded and fixed to the bottom of the cover (3).

8. A steam pipeline purging target plate structure according to any one of claims 1 to 6, characterized in that: The support rod assembly (4) is provided with a threaded post (43) at the top and a threaded sleeve (32) at the bottom of the cover (3). The support rod assembly (4) and the cover (3) are detachable through the threaded engagement of the threaded post (43) and the threaded sleeve (32). The length of the support rod assembly (4) entering the steam pipe body (1) can be adjusted by adjusting the threaded connection depth of the threaded post (43) in the threaded sleeve (32) to accommodate steam pipe bodies (1) of different diameters.

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