Leakage detection device for air pre-heater

Abstract

The invention provides an air pre-heater leakage detection device. The air pre-heater leakage detection device comprises a moving structure, two mounting structures and two groups of detection structures, the moving structure is movably arranged on the supporting base surface; the two mounting structures are oppositely arranged on the moving structure; the two groups of detection structures are correspondingly arranged on the two mounting structures respectively, and each group of detection structures comprises a plurality of detection structures which are arranged at intervals; the installation structure comprises a ventilation pipeline connected with the air pressure sensor, each detection structure comprises an adaptation assembly used for adapting to a barrier at the pipe opening end face of the to-be-detected pipe fitting and an air pipe fitting arranged on the adaptation assembly, and the air pipe fitting is communicated with the ventilation pipeline so as to drive the air pipe fitting to stretch into a preset position in the to-be-detected pipe fitting through the adaptation assembly. The air pressure value in the to-be-detected pipe fitting is detected, so that the problem that a traditional air pre-heater leakage detection device in the prior art is not high in adaptability to environment factors such as welding seams and protruding pipe openings of the end face of an air pre-heater pipe is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air preheater leakage detection, and in particular to an air preheater leakage detection device. Background Art

[0002] The full name of air preheater is air preheater. Air preheater is a heat exchanger that uses the waste heat of flue gas at the tail of the boiler to heat the air required for combustion. At present, the air preheaters used in power station boilers are generally tubular air preheaters and rotary air preheaters. Tubular air preheaters are widely used in circulating fluidized bed boilers due to their simple structure and low theoretical air leakage rate. Tubular air preheaters also have the characteristics of poor corrosion resistance, easy low-temperature corrosion at the cold end, and increased air leakage. Therefore, it is necessary to conduct regular leakage inspections on tubular air preheaters, but currently it generally relies on manual inspections one by one, or the use of automated detection equipment. In automated equipment, the detection probe directly contacts the end face of the air preheater tube to measure the internal air pressure and determine whether there is a leak.

[0003] However, the detection probes in the prior art are not very adaptable to complex environmental factors on the end face of the tubular air preheater, such as welds, protruding pipe openings, etc. These environmental factors can cause inaccurate probe positioning and increased contact resistance, thereby affecting the accuracy and efficiency of the measurement. In addition, although the manual detection method can cope with complex environments, it is time-consuming and affected by human factors, and the detection accuracy is difficult to guarantee. Summary of the invention

[0004] The main purpose of the present invention is to provide an air preheater leakage detection device to solve the problem that the conventional air preheater leakage detection device in the prior art has poor adaptability to environmental factors such as welds and protruding pipe openings on the air preheater tube end faces.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air preheater leakage detection device, comprising: a movable structure, movably arranged on a supporting base; two mounting structures, relatively arranged on the movable structure; two groups of detection structures, respectively and correspondingly arranged on the two mounting structures, each group of detection structures comprising a plurality of detection structures arranged at intervals; the mounting structure comprises a ventilation duct connected to an air pressure sensor, each detection structure comprising an adaptation component for adapting to obstacles at the end face of the pipe mouth of a pipe fitting to be tested and an air pipe fitting arranged on the adaptation component, the air pipe fitting being connected to the ventilation duct so as to drive the air pipe fitting to extend into a preset position in the pipe fitting to be tested through the adaptation component so as to detect the air pressure value in the pipe fitting to be tested.

[0006] Furthermore, the adaptation component includes: a connecting frame, one end of which is rotatably connected to the mounting structure; an adaptation component, which is connected to the other end of the connecting frame, and one end of the air pipe piece away from the ventilation pipe passes through the adaptation component and the pipe opening of the air pipe piece is located at the bottom of the adaptation component.

[0007] Furthermore, the detection structure also includes: a guide component, at least a portion of which is rotatably connected to the adaptation component, so that when the air pipe component is extended into the pipe to be tested, at least a portion of the guide component contacts the pipe wall of the pipe to be tested and moves along the extension direction of the pipe to be tested, so as to drive the air pipe component to move to a preset position.

[0008] Furthermore, the guide assembly includes: a connecting shaft, which is rotatably inserted into the adaptable component; two guide wheels, which are respectively connected to the two ends of the connecting shaft and are located on opposite sides of the adaptable component, and limit members are respectively provided on the side of the connecting shaft where the two guide wheels are away from the adaptable component.

[0009] Furthermore, the guide assembly also includes two magnetic parts, which are respectively arranged on the connecting shaft and correspondingly located on the side of the two guide wheels away from the limiting member.

[0010] Furthermore, the adapting component has an inclined end surface at one end facing the pipe to be tested, and a buffer is provided on the inclined end surface for contacting the pipe wall of the pipe to be tested.

[0011] Furthermore, the connecting frame includes: a first connecting member and a second connecting member, which are arranged opposite to each other and one end of the first connecting member and the second connecting member are respectively connected to the opposite sides of the adapting member, and a fixing rod is connected between the other ends of the first connecting member and the second connecting member; an adjusting member, which is connected to a side of the first connecting member away from the fixing rod, and at least a part of the adjusting member and the second connecting member are respectively rotatably connected to at least a part of the mounting structure to adjust the direction of the detection structure toward the pipe to be tested.

[0012] Furthermore, the adjusting component includes a torsion spring and a fixing component, one end of the torsion spring is connected to the first connecting component, and the other end of the torsion spring is connected to the fixing component. A through hole is provided on the fixing component so that the connecting component can be sequentially passed through the through hole and at least part of the mounting structure.

[0013] Furthermore, the mounting structure includes: a mounting frame, which is arranged on the mobile structure; a plurality of connecting rods, which are arranged on the mounting frame, and the plurality of connecting rods are respectively connected to two adjacent detection structures, one end of the connecting rod is connected to a fixing member of one of the two adjacent detection structures, and the other end of the connecting rod is rotatably connected to a second connecting member of the other of the two adjacent detection structures.

[0014] Furthermore, the mobile structure includes: a mobile body, two mounting structures are respectively arranged on the mobile body; a plurality of mobile wheels, which are respectively rotatably connected to the bottom of the mobile body, and each mobile wheel is provided with a plurality of anti-slip protrusions at intervals along its circumferential direction for contacting the supporting base surface.

[0015] By applying the technical solution of the present invention, an air preheater leakage detection device is provided, comprising a movable structure, two mounting structures and two groups of detection structures; the movable structure is movably arranged on a supporting base; the two mounting structures are relatively arranged on the movable structure; the two groups of detection structures are respectively and correspondingly arranged on the two mounting structures, and each group of detection structures comprises a plurality of detection structures arranged at intervals; the mounting structure comprises a ventilation duct connected to an air pressure sensor, and each detection structure comprises an adaptation component for adapting to obstacles at the end face of the pipe mouth of a pipe fitting to be tested and an air pipe fitting arranged on the adaptation component, the air pipe fitting being connected to the ventilation duct so as to drive the air pipe fitting to extend into a preset position in the pipe fitting to be tested through the adaptation component so as to detect the air pressure value in the pipe fitting to be tested.

[0016] In this way, through the design of the adaptive component, the air pipe fitting can avoid obstacles at the end face of the pipe mouth of the pipe fitting to be tested, such as welds, protruding pipe mouths, etc., and extend into the preset position in the pipe fitting to be tested, thereby enhancing the adaptability of the detection device in the relatively complex air preheater pipe wall environment, avoiding the problems of inaccurate positioning and increased contact resistance, and realizing a high-precision leakage detection function, thereby solving the problem that the traditional air preheater leakage detection device in the prior art has a weak adaptability to environmental factors such as welds and protruding pipe mouths on the end face of the air preheater pipe. At the same time, the adaptive component drives the air pipe fitting to extend into the preset position in the pipe fitting to be tested for air pressure detection, which can ensure the accuracy of the position of each detection, avoid detection errors caused by environmental factors, reduce the time of manual positioning, and improve detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It shows a schematic diagram of the overall structure provided by an embodiment of an air preheater leakage detection device according to the present invention;

[0019] Figure 2 It shows a schematic structural diagram of the installation structure and the detection structure when they are assembled according to an embodiment of the air preheater leakage detection device of the present invention;

[0020] Figure 3 It shows a schematic structural diagram of a detection structure provided by an embodiment of an air preheater leakage detection device according to the present invention;

[0021] Figure 4 It shows a schematic structural diagram of the assembly of the adapting component and the guide assembly provided by the embodiment of the air preheater leakage detection device according to the present invention;

[0022] Figure 5A schematic structural diagram of a detection structure provided by an embodiment of an air preheater leakage detection device according to the present invention in a working state is shown.

[0023] The above drawings include the following reference numerals:

[0024] 1. Pipe fitting to be tested; 10. Moving structure; 11. Moving body; 12. Moving wheel; 120. Anti-slip protrusion;

[0025] 20. Mounting structure; 21. Ventilation duct; 22. Mounting frame; 23. Connecting rod;

[0026] 30. Detection structure; 31. Adaptation component; 310. Connecting frame; 3101. First connecting member; 3102. Second connecting member; 3103. Fixing rod; 311. Adaptation component; 3110. Buffer component; 312. Adjustment component; 3120. Torsion spring component; 3121. Fixing component; 3122. Through hole; 32. Air pipe component; 33. Guide component; 330. Connecting shaft; 331. Guide wheel; 332. Limiting component; 333. Magnetic component. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] In order to solve the problem that the conventional air preheater leakage detection device in the prior art has poor adaptability to environmental factors such as welds and protruding pipe openings on the air preheater tube end faces, the present invention provides an air preheater leakage detection device.

[0029] Please refer to Figures 1 to 5 As shown, the present invention provides an air preheater leakage detection device, including a mobile structure 10, two mounting structures 20 and two groups of detection structures 30; the mobile structure 10 is movably set on a supporting base; the two mounting structures 20 are relatively arranged on the mobile structure 10; the two groups of detection structures 30 are respectively and correspondingly arranged on the two mounting structures 20, and each group of detection structures 30 includes a plurality of detection structures 30 arranged at intervals; the mounting structure 20 includes a ventilation duct 21 connected to an air pressure sensor, and each detection structure 30 includes an adaptation component 31 for adapting to obstacles at the end face of the pipe mouth of the pipe fitting 1 to be tested and an air pipe component 32 arranged on the adaptation component 31, the air pipe component 32 is connected to the ventilation duct 21, so as to drive the air pipe component 32 to extend into a preset position in the pipe fitting 1 to be tested through the adaptation component 31, so as to detect the air pressure value in the pipe fitting 1 to be tested.

[0030] According to one aspect of the technical solution of the present invention, the air pipe fitting 32 can avoid obstacles at the end face of the pipe mouth of the pipe fitting 1 to be tested, such as welds, protruding pipe mouths, etc., and extend into the preset position in the pipe fitting 1 to be tested, thereby enhancing the adaptability of the detection device in a relatively complex air preheater pipe wall environment, avoiding the problems of inaccurate positioning and increased contact resistance, and realizing a high-precision leakage detection function, thereby solving the problem that the conventional air preheater leakage detection device in the prior art has a weak adaptability to environmental factors such as welds and protruding pipe mouths on the end face of the air preheater pipe. At the same time, the adaptation component 31 drives the air pipe fitting 32 to extend into the preset position in the pipe fitting 1 to be tested for air pressure detection, which can ensure the accuracy of the position of each detection, avoid detection errors caused by environmental factors, reduce the time of manual positioning, and improve detection efficiency.

[0031] Specifically, the adapting assembly 31 includes a connecting frame 310 and an adapting component 311; one end of the connecting frame 310 is rotatably connected to the mounting structure 20; the adapting component 311 is connected to the other end of the connecting frame 310, and the end of the air pipe 32 away from the ventilation pipe 21 passes through the adapting component 311 and the pipe opening of the air pipe 32 is located at the bottom of the adapting component 311. Through the above arrangement, the rotatable connection between the connecting frame 310 and the mounting structure 20 enables the air pipe 32 to flexibly adjust its direction when extending into the pipe 1 to be tested, and use the adapting component 311 to adapt to obstacles such as welds and protrusions at the end face of the pipe opening of the pipe 1 to be tested. This flexibility can ensure that the detection structure 30 still maintains good detection accuracy and efficiency when facing complex environments.

[0032] At the same time, the air pipe fitting 32 is inserted into the adapting component 311 to ensure that the pipe opening of the air pipe fitting 32 can be accurately aligned with the preset detection position in the pipe fitting 1 to be tested. Even if the internal structure of the pipeline is irregular, the adapting component 311 can drive the air pipe fitting 32 to reliably extend to the preset position for air pressure measurement, thereby improving the reliability of the detection. In addition, since the air pipe fitting 32 does not need to hard contact obstacles during the detection process, this reduces damage to the air pipe fitting 32 and the entire detection device, thereby extending the service life of the equipment and reducing maintenance costs.

[0033] like Figures 3 to 5As shown, the detection structure 30 also includes a guide component 33, at least part of which is rotatably connected to the adaption component 311, so that when the air pipe component 32 extends into the pipe component 1 to be tested, at least part of the guide component 33 contacts the pipe wall of the pipe component 1 to be tested and moves along the extension direction of the pipe component 1 to be tested, so as to drive the air pipe component 32 to move to a preset position. Through the above arrangement, the guide component 33 can ensure that the air pipe component 32 extends into the interior of the pipe component 1 to be tested along the correct path by contacting the pipe wall, and even if there is an obstacle on the end face of the pipe mouth, it can accurately reach the preset detection position, thereby improving the accuracy of the detection.

[0034] It should be noted that, in the present application, the diameter of the guide wheel 331 can be designed accordingly according to the distance requirement of the preset detection position of the air pipe component 32, so as to obtain the internal air pressure value of the air preheater pipe to be tested and accurately determine whether there is a leak.

[0035] Specifically, the guide assembly 33 includes a connecting shaft 330 and two guide wheels 331; the connecting shaft 330 is rotatably arranged on the adapting component 311; the two guide wheels 331 are respectively connected to the two ends of the connecting shaft 330 and are located on the opposite sides of the adapting component 311, and the connecting shaft 330 is provided with stoppers 332 on the side of the two guide wheels 331 away from the adapting component 311. In this way, when the detection structure 30 is extended into the pipe 1 to be tested, the two guide wheels 331 are respectively in contact with the pipe wall of the pipe 1 to be tested, and can move smoothly along the extension direction of the pipe wall, ensuring the stability and linearity of the air pipe 32 when it is extended into the pipe, avoiding the deviation or shaking of the air pipe 32 during the extension process, and improving the detection accuracy.

[0036] At the same time, the guide wheel 331 can quickly guide the air pipe fitting 32 to move to the preset detection position, reducing the positioning time and improving the detection efficiency, especially in the scenario where multiple pipe fittings need to be detected continuously, this advantage is more obvious. In addition, the two guide wheels 331 are respectively arranged on both sides of the mounting component, further reducing the direct contact between the air pipe fitting 32 and the obstacles at the end face of the pipe opening of the pipe fitting 1 to be tested, avoiding damage to the air pipe fitting 32, and improving the adaptability and accuracy of the detection device.

[0037] In this embodiment, the guide assembly 33 also includes two magnetic parts 333, which are respectively arranged on the connecting shaft 330 and correspondingly located on the side of the two guide wheels 331 away from the limiter 332. In this way, when the detection structure 30 extends into the air preheater tube, the magnetic circuit conduction of the two magnetic parts 333 enables the magnetic part 333 to generate magnetic adsorption with the tube wall of the air preheater tube (usually made of metal material), thereby providing additional stabilizing force during the detection process, ensuring the stability of the guide wheel 331 when it contacts the tube wall, and reducing the detection error caused by slight vibration or airflow. At the same time, the adsorption effect of the magnetic part 333 reduces the sliding friction of the guide wheel 331 on the tube wall, making the air pipe part 32 smoother when extending into and out of the pipe, reducing the energy consumption during the detection process, and reducing the wear on the guide wheel 331 and the tube wall. Furthermore, the adsorption force of the magnetic component 333 helps to automatically correct the position deviation of the trachea component 32 when it is inserted into the pipe. Even when the insertion angle of the trachea component 32 is not completely aligned, the magnetic component 333 can help the trachea component 32 to quickly align with the preset position, thereby improving the detection efficiency.

[0038] Specifically, the adapting component 311 has an inclined end face at one end facing the pipe 1 to be tested, and a buffer 3110 is provided on the inclined end face for contacting the pipe wall of the pipe 1 to be tested. Through the above arrangement, when the adapting component 311 contacts the pipe wall of the pipe 1 to be tested, the buffer 3110 can absorb the impact force during the contact process, preventing damage to the pipe wall or the adapting component 311 itself due to hard contact, thereby ensuring the long-term stability of the device and the safety of the pipe. The design of the inclined end face combined with the elastic characteristics of the buffer 3110 enables the adapting component 311 to better adapt to pipe walls of different shapes and inclinations, and even if there are slight irregularities in the pipe wall, it can ensure that the air pipe 32 is stably inserted into the pipe, thereby improving the adaptability and accuracy of the detection.

[0039] like Figure 3As shown, the connecting frame 310 includes a first connecting member 3101 and a second connecting member 3102 and an adjusting member 312 which are arranged opposite to each other; one end of the first connecting member 3101 and the second connecting member 3102 are respectively connected to the opposite sides of the adapting member 311, and a fixing rod 3103 is connected between the other ends of the first connecting member 3101 and the second connecting member 3102; the adjusting member 312 is connected to the side of the first connecting member 3101 away from the fixing rod 3103, and at least a part of the adjusting member 312 and the second connecting member 3102 are respectively rotatably connected to at least a part of the mounting structure 20 to adjust the direction of the detection structure 30 toward the pipe 1 to be detected. In this way, through the design of the adjusting member 312, the detection structure 30 can be flexibly adjusted toward different directions of the pipe 1 to be detected to adapt to the pipe 1 to be detected with different angles and position requirements, thereby improving the flexibility and application range of the detection. In addition, the detection structure 30 can be quickly adjusted to the optimal detection position, which greatly reduces the positioning and adjustment time before each detection and improves the detection efficiency.

[0040] Specifically, the adjustment component 312 includes a torsion spring 3120 and a fixing member 3121. One end of the torsion spring 3120 is connected to the first connecting member 3101, and the other end of the torsion spring 3120 is connected to the fixing member 3121. The fixing member 3121 is provided with a through hole 3122, so that the fixing member 3121 is sequentially penetrated through the through hole 3122 and at least a portion of the mounting structure 20 through the connecting component. Through the above arrangement, the torsion spring 3120 provides an elastic adjustment mechanism, so that the detection structure 30 can automatically adjust the angle according to the specific situation of the pipe 1 to be tested, and even if there are differences in the position, shape and inclination of the pipe, the detection structure 30 can maintain good contact with the pipe, thereby improving the detection accuracy and adaptability. Under the elastic force of the torsion spring 3120, the detection structure 30 can automatically align with the detection position, reducing the need for the operator to manually adjust the angle of the detection structure 30, simplifying the operation process, reducing human operation errors, and improving operation efficiency.

[0041] like Figure 2As shown, the mounting structure 20 includes a mounting frame 22 and a plurality of connecting rods 23; the mounting frame 22 is arranged on the mobile structure 10; a plurality of connecting rods 23 are arranged on the mounting frame 22, and the plurality of connecting rods 23 are respectively connected to two adjacent detection structures 30, one end of the connecting rod 23 is connected to a fixing member 3121 of one of the two adjacent detection structures 30, and the other end of the connecting rod 23 is rotatably connected to a second connecting member 3102 of the other of the two adjacent detection structures 30. In this way, the mounting frame 22, as a supporting platform, is fixedly connected to the mobile structure 10, providing a stable foundation and ensuring the mechanical stability of the detection structure 30 during operation. This helps to improve the accuracy of detection and reduce the measurement error caused by structural instability. A plurality of connecting rods 23 connect a plurality of detection structures 30 to form an array, that is, a group of detection structures 30, which can simultaneously detect a plurality of pipes 1 to be detected, greatly improving the detection efficiency. This advantage is particularly obvious when dealing with large-scale tubular air preheater detection tasks. Furthermore, the connecting rod 23 is rotatably connected to the second connecting member 3102 of the detection structure 30, so that each detection structure 30 can independently adjust the angle and position to meet the detection requirements of different pipes. This independent adjustment capability enhances the adaptability of the detection device to complex environments.

[0042] In this embodiment, the air pipe member 32 of each detection structure 30 is connected to the ventilation pipe 21 via a three-way joint.

[0043] Specifically, the mobile structure 10 includes a mobile body 11 and a plurality of mobile wheels 12; two mounting structures 20 are respectively arranged on the mobile body 11; the plurality of mobile wheels 12 are respectively rotatably connected to the bottom of the mobile body 11, and each mobile wheel 12 is provided with a plurality of anti-skid protrusions 120 at intervals along its circumferential direction for contacting with the supporting base surface. Through the above arrangement, the design of the plurality of mobile wheels 12 provides good mobility flexibility, so that the detection device can be easily moved in a small or complex space, and the convenience during detection is improved. At the same time, the presence of the anti-skid protrusions 120 increases the friction between the mobile wheel 12 and the supporting base surface, and improves the grip, especially under the condition of unstable detection environment, such as slopes or slippery ground, which can effectively prevent the detection device from sliding, and ensure the safety and stability of the detection process.

[0044] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0045] An air preheater leakage detection device comprises a mobile structure 10, two mounting structures 20 and two groups of detection structures 30; the mobile structure 10 is movably arranged on a supporting base; the two mounting structures 20 are relatively arranged on the mobile structure 10; the two groups of detection structures 30 are respectively and correspondingly arranged on the two mounting structures 20, and each group of detection structures 30 comprises a plurality of detection structures 30 arranged at intervals; the mounting structure 20 comprises a ventilation duct 21 connected to an air pressure sensor, and each detection structure 30 comprises an adaptation component 31 for adapting to obstacles at the end face of the pipe mouth of the pipe fitting 1 to be tested and an air pipe component 32 arranged on the adaptation component 31, the air pipe component 32 is connected to the ventilation duct 21, so as to drive the air pipe component 32 to extend into a preset position in the pipe fitting 1 to be tested through the adaptation component 31, so as to detect the air pressure value in the pipe fitting 1 to be tested. In this way, through the design of the adaptation component 31, the air pipe fitting 32 can avoid obstacles at the end face of the pipe mouth of the pipe fitting 1 to be tested, such as welds, protruding pipe mouths, etc., and extend into the preset position in the pipe fitting 1 to be tested, thereby enhancing the adaptability of the detection device in a relatively complex air preheater pipe wall environment, avoiding the problems of inaccurate positioning and increased contact resistance, and realizing a high-precision leakage detection function, thereby solving the problem that the conventional air preheater leakage detection device in the prior art has a weak adaptability to environmental factors such as welds and protruding pipe mouths on the end face of the air preheater pipe. At the same time, the adaptation component 31 drives the air pipe fitting 32 to extend into the preset position in the pipe fitting 1 to be tested for air pressure detection, which can ensure the accuracy of the position of each detection, avoid detection errors caused by environmental factors, reduce the time of manual positioning, and improve detection efficiency.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0048] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0050] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air preheater leakage detection device, characterized in that: include: A movable structure (10) is movably arranged on a supporting base surface; Two mounting structures (20) are arranged opposite to each other on the moving structure (10); Two groups of detection structures (30) are respectively arranged on the two mounting structures (20), and each group of the detection structures (30) includes a plurality of detection structures (30) arranged at intervals; The mounting structure (20) comprises a ventilation pipe (21) connected to the air pressure sensor, and each of the detection structures (30) comprises an adaption component (31) for adapting to obstacles at the end face of the pipe opening of the pipe fitting (1) to be tested, and an air pipe component (32) arranged on the adaption component (31), wherein the air pipe component (32) is connected to the ventilation pipe (21) so as to drive the air pipe component (32) to extend into a preset position in the pipe fitting (1) to be tested through the adaption component (31) so as to detect the air pressure value in the pipe fitting (1) to be tested.

2. The air preheater leakage detection device according to claim 1, characterized in that: The adaptation component (31) comprises: A connecting frame (310), one end of the connecting frame (310) being rotatably connected to the mounting structure (20); An adaptable component (311) is connected to the other end of the connecting frame (310), and one end of the air pipe component (32) away from the ventilation pipe (21) passes through the adaptable component (311), and the pipe opening of the air pipe component (32) is located at the bottom of the adaptable component (311).

3. The air preheater leakage detection device according to claim 2, characterized in that: The detection structure (30) further comprises: A guide assembly (33), at least a portion of which is rotatably connected to the adaptable component (311), so that when the air pipe component (32) extends into the pipe component (1) to be tested, at least a portion of the guide assembly (33) contacts the pipe wall of the pipe component (1) to be tested and moves along the extension direction of the pipe component (1) to be tested, so as to drive the air pipe component (32) to move to the preset position.

4. The air preheater leakage detection device according to claim 3, characterized in that: The guide assembly (33) comprises: A connecting shaft (330) rotatably penetrates the adaptable component (311); Two guide wheels (331) are respectively connected to the two ends of the connecting shaft (330) and are located on opposite sides of the adaptable component (311). Limiting members (332) are respectively provided on the connecting shaft (330) on the side of the two guide wheels (331) away from the adaptable component (311).

5. The air preheater leakage detection device according to claim 4, characterized in that: The guide assembly (33) further comprises two magnetic members (333), wherein the two magnetic members (333) are respectively arranged on the connecting shaft (330) and are correspondingly located on a side of the two guide wheels (331) away from the limiting member (332).

6. The air preheater leakage detection device according to claim 2, characterized in that: The adapting component (311) has an inclined end surface at one end facing the pipe (1) to be tested, and a buffer component (3110) is provided on the inclined end surface for contacting the pipe wall of the pipe (1) to be tested.

7. The air preheater leakage detection device according to claim 2, characterized in that: The connecting frame (310) comprises: A first connecting member (3101) and a second connecting member (3102) are arranged opposite to each other, and one end of the first connecting member (3101) and one end of the second connecting member (3102) are respectively connected to opposite sides of the adaptable component (311), and a fixing rod (3103) is connected between the other ends of the first connecting member (3101) and the second connecting member (3102); An adjusting component (312) is connected to a side of the first connecting member (3101) away from the fixing rod (3103), and at least a portion of the adjusting component (312) and the second connecting member (3102) are respectively rotatably connected to at least a portion of the mounting structure (20) to adjust the direction of the detection structure (30) toward the pipe (1) to be detected.

8. The air preheater leakage detection device according to claim 7, characterized in that: The adjusting component (312) comprises a torsion spring component (3120) and a fixing component (3121), one end of the torsion spring component (3120) is connected to the first connecting component (3101), and the other end of the torsion spring component (3120) is connected to the fixing component (3121), and a through hole (3122) is provided on the fixing component (3121) so as to be sequentially penetrated through the through hole (3122) and at least a portion of the mounting structure (20) through the connecting component.

9. The air preheater leakage detection device according to claim 8, characterized in that: The mounting structure (20) comprises: A mounting frame (22) is arranged on the mobile structure (10); A plurality of connecting rods (23) are arranged on the mounting frame (22), and the plurality of connecting rods (23) are respectively connected to two adjacent detection structures (30), one end of the connecting rod (23) is connected to the fixing member (3121) of one of the two adjacent detection structures (30), and the other end of the connecting rod (23) is rotatably connected to the second connecting member (3102) of the other of the two adjacent detection structures (30).

10. The air preheater leakage detection device according to claim 1, characterized in that: The mobile structure (10) comprises: A mobile body (11), wherein the two mounting structures (20) are respectively arranged on the mobile body (11); A plurality of moving wheels (12) are rotatably connected to the bottom of the moving body (11), and each of the moving wheels (12) is provided with a plurality of anti-slip protrusions (120) at intervals along its circumferential direction for contacting with a supporting base surface.

Images