Special tool for checking creep expansion amount of boiler pressure pipeline
By designing a specialized tool that includes clamps, a rotating structure, and elastic components, the problem of slow inspection speed of boiler pressurized pipeline creep was solved, achieving fast, stable, and reliable measurement and ash removal functions, and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-31
AI Technical Summary
Existing methods for checking the creep of boiler pressurized pipes are slow and inefficient, making it impossible to complete the task quickly in confined spaces, and conventional measuring tools are difficult to operate.
A special tool was designed, comprising a first clamp, a second clamp, a rotating structure, an elastic element, and a measuring element. Through the cross arrangement of the clamps and the elastic action of the elastic element, the creep of pipes of different sizes can be quickly measured, and it also has a dust removal function.
It enables rapid, stable, and reliable measurement of creep in pressurized pipelines within confined spaces, improving maintenance efficiency and providing a dust removal function, thus saving costs.
Smart Images
Figure CN224066064U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of boiler anti-wear and explosion-proof inspection technology, specifically to a special tool for inspecting the creep of boiler pressurized pipes. Background Technology
[0002] As one of the three main units in a thermal power plant, the boiler is mainly composed of water-cooled walls, superheaters, reheaters, economizers, headers, steam-water connection pipes, and other equipment. According to incomplete statistics, boiler heating surface tube rupture incidents account for about 50% of unplanned unit shutdown incidents, and in some thermal power plants, the heating surface rupture incidents are as high as 65%.
[0003] Wear and explosion prevention inspections are a crucial part of the operation and maintenance of thermal power plants. Among them, the inspection and judgment of the creep of pressurized pipelines is a huge workload with limited time. Due to the high level of coal dust, narrow space, and ash and scale adhering to the pipeline walls, the inspection is difficult. When using conventional measuring tools, inspectors need to clean the dust and scale before taking measurements. The measuring tools are easily affected by coal dust. The inspection of the creep of pressurized pipelines is slow, time-consuming, and inefficient, making it impossible to complete the task during maintenance. Utility Model Content
[0004] This utility model provides a special tool for checking the creep of boiler pressurized pipes, which solves the problems of slow speed and low efficiency of existing pressurized pipe creep checking, inability to complete the task during maintenance, narrow spaces, difficult inspection areas, and the lack of practical operability of conventional measuring tools.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0006] A special tool for checking the creep of pressurized pipes in a boiler includes a first clamp, a second clamp, a rotating structure, an elastic element, and a measuring element. The middle parts of the first clamp and the second clamp are arranged crosswise and connected by a pin through the rotating structure. The tops of the first clamp and the second clamp are the detection ends, and the bottoms of the first clamp and the second clamp are the handles.
[0007] The beneficial effects of this invention are that, during measurement, the pressurized pipe is directly inserted between the first and second clamps, and the creepage amount of the pressurized pipe is measured according to the size of the opening. The creepage amount is read through the detection end. The elastic force of the elastic element on the end faces of the first and second clamps causes the opening between them to close, achieving a reset. The same tool can be used to measure the creepage amount of pressurized pipes of different sizes, allowing maintenance personnel to mark the measurements simultaneously, and enabling them to quickly complete maintenance even in confined spaces.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the surface of the grip is provided with a heat insulation layer.
[0010] The beneficial effect of adopting the above-mentioned further solution is that by setting a heat insulation layer on the surface of the handle, heat from the boiler pipes can be effectively prevented from being transferred to the maintenance personnel's hands through the detection ends of the first and second clamps, thus preventing burns. At the same time, it also provides an anti-slip function, preventing the maintenance personnel from slipping and dropping the tool.
[0011] Furthermore, the insulation layer is made of rubber.
[0012] The advantages of adopting the above-mentioned further solution are that the material of the heat insulation layer is rubber, which can not only play a role in anti-slip but also in heat insulation, thus saving costs and improving maintenance speed.
[0013] Furthermore, the rotating structure is a hinged rotation.
[0014] The beneficial effect of adopting the above-mentioned further solution is that the rotating structure is a hinged rotation, which allows the first and second locking parts to open or close in a cross manner with the rotating structure as the axis.
[0015] Furthermore, the elastic element is a spring, and its two ends are respectively connected to the first locking element and the second locking element. The elastic element can drive the openings of the first locking element and the second locking element to close.
[0016] The beneficial effect of adopting the above-mentioned further solution is that the elastic function of the spring retracts the opening ends of the first and second locking parts, so that when the device is not working, the openings of the first and second locking parts are in a closed state, thereby increasing the service life of the device.
[0017] Furthermore, the detection ends of the first and second card pieces have pointed tips and locking surfaces at their ends. The locking surfaces of the first and second card pieces cooperate with each other to form a locking part, and the intersection of the first and second card pieces has a relatively wide surface.
[0018] The beneficial effects of adopting the above-mentioned further solution are that the detection ends of the first and second clamping components have sharp points, allowing the device to remove the dust layer on the pipe using these sharp points. Then, the clamping surfaces of the first and second clamping components cooperate to form a clamping part that engages with the pipe for measurement, ensuring the clamping part is engaged with the outer surface of the pipe. Simultaneously, the opening size of the clamping part can be adjusted according to the pipe's diameter, allowing the device to measure pipes of different sizes simultaneously. While measuring the creep of the pressurized pipe, the sharp points of the first and second clamping components are used to clean the pipe. This allows maintenance personnel to perform cleaning and inspection simultaneously, ensuring stability, reliability, speed, and high efficiency.
[0019] Furthermore, the first and second clips are made of wear-resistant steel that has undergone heat treatment.
[0020] The beneficial effect of adopting the above-mentioned further solution is that the first and second clamps are made of wear-resistant steel that has undergone heat treatment, which can increase the service life of the device and save costs.
[0021] Furthermore, the surface of the measuring component has a measuring scale, the measuring component is disposed on the surface of the first card, and the surface of the measuring component with the scale faces upward. One end of the measuring component is concealed under the intersection end face of the second card and the first card, and the other end of the measuring component is displayed on the surface of the first card.
[0022] The beneficial effect of adopting the above-mentioned further solution is that when the locking parts of the first and second clamps are engaged with the pipe, the measuring element will display the pipe's dimensions as the opening of the locking part opens. This facilitates the inspection personnel to observe the pipe's outer diameter, thereby calculating the outer diameter of the pressurized pipe and the creep amount specified by the standard, and thus determining whether the pipe is intact.
[0023] Furthermore, the grip ends of the first and second locking components may also include handles, with an inner groove at one end of the handle, and the bottom ends of the first and second locking components are disposed in the inner grooves.
[0024] The beneficial effect of adopting the above-described further solution is that the intersection of the first and second locking components is positioned within the inner groove, with one side of the first locking component and one side of the second locking component respectively engaged on two opposite sidewalls of the inner groove. This fixes the first and second locking components within the inner groove, providing a certain degree of restriction when the detection ends of the first and second locking components open or close, thus ensuring the safety of the device and the accuracy of the detection.
[0025] Furthermore, the rotating structure is hinged and rotates sequentially through the handle and at the intersection of the first and second locking pieces.
[0026] The beneficial effect of adopting the above-mentioned further solution is that the rotating structure passes through the handle and the intersection of the first and second locking pieces in sequence and rotates, so that when the first and second locking pieces rotate about the rotating structure as the axis, the first and second locking pieces are hinged to the handle, making the connection between the first and second locking pieces more stable. Attached Figure Description
[0027] Figure 1 A schematic diagram of the structure of a special tool for checking the creep of a boiler pressurized pipeline when the detection end is open, as provided in this embodiment of the utility model.
[0028] Figure 2 A schematic diagram of the structure of the special tool for checking the creep of boiler pressurized pipes provided in this embodiment of the utility model when it is not in operation;
[0029] Figure 3 Another structural schematic diagram of the special tool for checking the creep of boiler pressurized pipes provided in this embodiment of the utility model when the detection end is open;
[0030] Figure 4 This is a partial cross-sectional view of the special tool for checking the creep of boiler pressurized pipes provided in this embodiment of the utility model when it is not in operation.
[0031] The components represented by each number in the attached diagram are listed below: 1. Handle; 11. Inner groove; 2. First locking element; 21. Tip; 22. Locking surface; 23. Locking part; 24. Grip; 241. Heat insulation layer; 3. Second locking element; 4. Rotating structure; 5. Elastic element; 6. Measuring element. Detailed Implementation
[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0033] Example 1
[0034] like Figure 1-2 As shown, a special tool for checking the creep of boiler pressurized pipes includes a first clamp 2, a second clamp 3, a rotating structure 4, an elastic element 5, and a measuring element 6. The middle part of the first clamp 2 and the middle part of the second clamp 3 are intersected and connected by the rotating structure 4. The top of the first clamp 2 and the top of the second clamp 3 are the detection ends, and the bottom of the first clamp 2 and the bottom of the second clamp 3 are the handles 24.
[0035] Specifically, the tips 21 of the first clamp 2 and the second clamp 3 are clamped onto the pipe. After the clamping parts 23 of the first clamp 2 and the second clamp 3 are clamped onto the pipe, the first clamp 2 and the second clamp 3 rotate about the rotating structure 4. At the same time, the measuring element 6 provided on the first clamp 2 displays the scale size on the measuring element 6 as the clamping parts 23 of the first clamp 2 and the second clamp 3 open, indicating the outer diameter of the pipe at the current position being measured. The creep of the pressurized pipe is then calculated based on the measured value.
[0036] like Figure 1-2 As shown, a heat insulation layer 241 is provided on the surface of the handle 24.
[0037] Specifically, a heat insulation layer 241 is provided on the surface of the handle 24, which can effectively prevent the heat from the boiler pipes from being transferred to the maintenance personnel's hands through the detection ends of the first clamp 2 and the second clamp 3, thus preventing burns. At the same time, it also provides anti-slip grip to prevent the maintenance personnel from slipping and dropping the device.
[0038] like Figure 1-2 As shown, the material of the heat insulation layer 241 is rubber.
[0039] Specifically, the insulation layer 241 is made of rubber, which can both prevent slipping and provide insulation, saving costs and improving maintenance speed.
[0040] like Figure 1-2 As shown, the rotating structure 4 is a hinged rotation.
[0041] Specifically, the rotating structure 4 is a hinged rotation, which allows the first and second locking components to open or close in a cross manner with the rotating structure 4 as the axis.
[0042] like Figure 1-2 As shown, the elastic element 5 is a spring, and its two ends are respectively connected to the first locking element 2 and the second locking element 3. The elastic element 5 can drive the openings of the first locking element 2 and the second locking element 3 to close.
[0043] Specifically, the elasticity of the spring retracts the open ends of the first locking member 2 and the second locking member 3, so that when the device is not in operation, the openings of the first locking member 2 and the second locking member 3 are in a closed state, thereby increasing the service life of the device. The spring can be a tension spring.
[0044] like Figure 1-2 As shown, the first card 2 and the second card 3 have a pointed tip 21 at the detection end and a locking surface 22 at the end. The locking surface 22 of the first card 2 and the locking surface 22 of the second card 3 cooperate with each other to form a locking part 23. The intersection of the first card 2 and the second card 3 has a wider surface.
[0045] Specifically, the dust layer on the pipe is removed by using the tips 21 of the first clamping member 2 and the second clamping member 3. Then, the clamping surface 22 of the first clamping member 2 and the clamping surface 22 of the second clamping member 3 cooperate to form a clamping part 23 to clamp and measure the pipe. At the same time, the clamping part 23 can be adjusted according to the diameter of the pipe, so that the device can measure pipes of different sizes at the same time.
[0046] like Figure 1-2 As shown, the first clip 2 and the second clip 3 are made of wear-resistant steel that has undergone heat treatment.
[0047] Specifically, the first clip 2 and the second clip 3 are made of wear-resistant steel that has undergone heat treatment, which can increase the service life of the device and save costs.
[0048] like Figure 1-2As shown, the surface of the measuring element 6 has a measuring scale. The measuring element 6 is disposed on the surface of the first card 2, and the surface of the measuring element 6 with the scale faces upward. One end of the measuring element 6 is concealed under the intersection of the second card 3 and the first card 2, and the other end of the measuring element 6 is displayed on the surface of the first card 2.
[0049] Specifically, when the locking portions 23 of the first locking member 2 and the second locking member 3 are engaged with the pipe, the measuring element 6 will display the pipe's dimensions as the opening of the locking portion 23 opens. This allows inspectors to observe the pipe's outer diameter, thereby calculating the outer diameter of the pressurized pipe and the standard-specified creep amount, and thus determining whether the pipe is intact. In this embodiment, the measuring element 6 can be a ruler or a dial; alternatively, the measuring element 6 can also be other retractable mechanisms with marked scale values. In this embodiment, when the locking portions 23 of the first locking member 2 and the second locking member 3 are engaged with the pipe, the measuring element 6 simultaneously displays the scale, with the scale value marked on the side of the second locking member 3 as the reference.
[0050] The beneficial effects of this embodiment are as follows: The elastic force of the elastic element 5 acts on the end faces of the first clamp 2 and the second clamp 3, causing them to rotate about the rotating structure 4 as an axis, thus opening or closing the opening between the first clamp 2 and the second clamp 3. The creep of the pressurized pipeline can be measured based on the size of the opening. The same tool can be used to measure the creep of pressurized pipelines of different sizes, allowing maintenance personnel to inspect and mark simultaneously. This enables maintenance personnel to quickly complete maintenance even in confined spaces, while simultaneously using the tips 21 of the first clamp 2 and the second clamp 3 to clean the pipeline. This allows maintenance personnel to perform cleaning and inspection simultaneously, ensuring stability, reliability, speed, and high efficiency.
[0051] The working process of this embodiment is as follows: The tips 21 of the first clamp 2 and the second clamp 3 are clamped onto the pipe. After the clamping parts 23 of the first clamp 2 and the second clamp 3 are clamped onto the pipe, the first clamp 2 and the second clamp 3 rotate and open about the rotating structure 4. At the same time, the measuring element 6 provided on the first clamp 2 displays the scale size on the measuring element 6 as the clamping parts 23 of the first clamp 2 and the second clamp 3 open, indicating the outer diameter of the pipe at the current position being measured. The creep of the pressurized pipe is calculated based on the magnitude of the measured value.
[0052] Example 2
[0053] Based on Example 1, the difference between this example and Example 1 is as follows:
[0054] like Figure 3-4 As shown, the handle 24 ends of the first card 2 and the second card 3 may also include a handle 1. One end of the handle 1 is provided with an inner groove 11, and the bottom ends of the first card 2 and the second card 3 are disposed in the inner groove 11.
[0055] Specifically, the intersection of the first and second locking components is positioned within the inner groove, with one side of the first locking component and one side of the second locking component respectively engaged on two opposite sidewalls of the inner groove. This fixes the first and second locking components within the inner groove, providing a certain degree of restriction when the detection ends of the first and second locking components are opened, thus ensuring the safety and accuracy of the device.
[0056] like Figure 3-4 As shown, the rotating structure 4 is hinged and rotates through the intersection of the handle 1, the first locking piece 2, and the second locking piece 3.
[0057] Specifically, the rotating structure 4 passes through the handle 1 and the intersection of the first locking piece 2 and the second locking piece 3 in sequence and is hinged to rotate, so that when the first locking piece 2 and the second locking piece 3 rotate about the rotating structure 4 as the axis, the first locking piece 2 and the second locking piece 3 are hinged to the handle 1, making the connection between the first locking piece 2 and the second locking piece 3 more stable.
[0058] The beneficial effects of this embodiment are as follows: The elastic force of the elastic element 5 acts on the end faces of the first clamp 2 and the second clamp 3, causing them to rotate about the rotating structure 4 as an axis, thus opening or closing the opening between the first clamp 2 and the second clamp 3. The creep of the pressurized pipeline can be measured based on the size of the opening. The same tool can be used to measure the creep of pressurized pipelines of different sizes, allowing maintenance personnel to inspect and mark simultaneously. This enables maintenance personnel to quickly complete maintenance even in confined spaces, while simultaneously using the tips 21 of the first clamp 2 and the second clamp 3 to clean the pipeline. This allows maintenance personnel to perform cleaning and inspection simultaneously, ensuring stability, reliability, speed, and high efficiency.
[0059] The working process of this embodiment is as follows: The tips 21 of the first clamp 2 and the second clamp 3 are clamped onto the pipe. After the clamping parts 23 of the first clamp 2 and the second clamp 3 are clamped onto the pipe, the first clamp 2 and the second clamp 3 rotate and open about the rotating structure 4. At the same time, the measuring element 6 provided on the first clamp 2 displays the scale size on the measuring element 6 as the clamping parts 23 of the first clamp 2 and the second clamp 3 open, indicating the outer diameter of the pipe at the current position being measured. The creep of the pressurized pipe is calculated based on the magnitude of the measured value.
[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A special tool for checking the amount of creep of a boiler pressure pipe, characterized in that, The utility model provides a kind of measuring device, including first clamping piece (2), second clamping piece (3), rotating structure (4), elastic member (5) and measuring piece (6), the middle part of the first clamping piece (2) is hinged with the middle part of the second clamping piece (3), the top end of the first clamping piece (2) and the top end of the second clamping piece (3) are detection end, the bottom end of the first clamping piece (2) and the bottom end of the second clamping piece (3) are handle (24).
2. A special tool for checking the amount of creep of a boiler pressure pipe according to claim 1, characterized in that, The surface of the handle (24) is provided with a thermal insulation layer (241).
3. A special tool for checking the amount of creep of a boiler pressure pipe according to claim 2, characterized in that, The material of the thermal insulation layer (241) is selected as rubber.
4. A special tool for checking the amount of creep of a boiler pressure pipe according to claim 1, characterized in that, The middle part of the first clamping piece (2) is hinged with the middle part of the second clamping piece (3) through the rotating structure (4).
5. A special tool for checking the amount of creep of a boiler pressure pipe according to claim 1, characterized in that, The elastic member (5) is a spring, and the two ends of the elastic member (5) are connected to the first clamping piece (2) and the second clamping piece (3) respectively.
6. A special tool for checking the amount of creep of a boiler pressure pipe according to claim 1, characterized in that, The first clamping piece (2) and the second clamping piece (3) have a sharp end (21) at the detection end, and have a clamping surface (22) at the end.
7. A tool for checking the amount of creep of a boiler pressure pipe according to claim 1, wherein The first clamping piece (2) and the second clamping piece (3) are made of wear-resistant steel after heat treatment.
8. A tool for checking the amount of creep of a boiler pressure pipe according to claim 1, wherein The surface of the measuring piece (6) has a measurement scale, the measuring piece (6) is arranged on the surface of the first clamping piece (2), and the surface of the measuring piece (6) with the scale is away from the surface of the first clamping piece (2).
9. A special tool for checking the amount of creep of a boiler pressure pipe according to claim 1, characterized in that, The handle (24) end of the first clamping piece (2) and the second clamping piece (3) includes a handle (1), one end of the handle (1) is provided with an inner groove (11), and the bottom end of the first clamping piece (2) and the bottom end of the second clamping piece (3) are arranged in the inner groove (11).
10. A tool for checking the amount of creep of a boiler pressure pipe according to claim 9, wherein The rotating structure (4) sequentially passes through the handle (1) and the intersection of the first clamping piece (2) and the second clamping piece (3).