Air pressure detection device

Abstract

The invention provides an air pressure detection device which comprises a walking mechanism used for walking on a tube plate of a tubular air preheater; the air pressure detection mechanism comprises an air pressure detection part and an air inlet part which are connected with each other, the air pressure detection part is arranged on the walking mechanism, the air pressure detection part is provided with an air inlet, the air inlet part is provided with an air inlet end and an air outlet end which are oppositely arranged, the air outlet end is communicated with the air inlet, and the air inlet end is provided with an air inlet and extends in the first direction; the air inlet end is movably arranged on the walking mechanism in the first direction, and the air inlet end is used for being embedded into or separated from an opening of a metal pipe of the air preheater; wherein the first direction is perpendicular to the walking direction of the walking mechanism. According to the scheme, the problems that in the prior art, the efficiency and accuracy are low due to the fact that the pressure at the end opening of the metal pipe of the tubular air preheater is detected manually can be solved.

Description

Technical Field

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

[0002] During long-term operation, the tubular air preheater of a circulating fluidized bed boiler may suffer from wear, corrosion or leakage at the end opening of the pipe fittings, which directly affects the operating efficiency and safety of the boiler. Accurately testing the pressure at the end opening of the pipe fittings is a key step in evaluating the health of the air preheater, which helps to find and deal with leaks early, reduce energy waste, and improve the stability of equipment operation.

[0003] The tubular air preheater usually includes two tube sheets and a series of parallel metal tubes. The tube sheets are provided with a plurality of mounting holes, which are arranged one by one with the metal tubes. The two ends of the series of metal tubes arranged opposite to each other on the two tube sheets are respectively passed through and mounted in the corresponding mounting holes on the two tube sheets.

[0004] At present, the air pressure detection at the end opening of the metal tube of the tubular air preheater mainly relies on manual work, using traditional methods such as listening for leaks and visual inspection. This method is not only inefficient, but also greatly affected by human factors, with a high missed detection rate, making it difficult to ensure the accuracy and comprehensiveness of the detection. Summary of the invention

[0005] The invention provides an air pressure detection device to solve the problem of low efficiency and accuracy in the prior art of manually detecting the pressure at the end opening of a metal tube of a tubular air preheater.

[0006] The present invention provides an air pressure detection device, which comprises: a walking mechanism, which is used to walk on the tube plate of a tubular air preheater; the air pressure detection mechanism, which comprises an air pressure detection part and an air intake part which are connected to each other, the air pressure detection part is arranged on the walking mechanism, the air pressure detection part has a gas inlet, the air intake part has an air inlet end and an air outlet end which are arranged relatively, the air outlet end is connected to the gas inlet, the air inlet end has an air inlet port, the air inlet end extends along a first direction, the air inlet end is movably arranged on the walking mechanism along the first direction, and the air inlet end is used to be embedded in or out of the opening of the metal tube of the air preheater; wherein the first direction is perpendicular to the walking direction of the walking mechanism and perpendicular to the walking wall surface.

[0007] Furthermore, the end face of the air inlet end of the air inlet section is arc-shaped, and the air pressure detection device also includes: an elastic member, one end of the elastic member is connected to the walking mechanism, and the other end is connected to the air inlet end, and the elastic member is used to apply a force to the air inlet end to embed it into the opening of the metal tube. Specifically, when the walking mechanism moves to the end opening position of the target metal tube, the air inlet end of the air inlet section can be smoothly embedded in the opening of the metal tube under the push of the elastic member. When the detection is completed, the walking mechanism continues to move forward, and under the action of the rebound force of the elastic member, the air inlet end with the arc-shaped end face can be disengaged from the opening of the metal tube, ready to detect the next metal tube. The above arrangement makes it unnecessary for the present device to set an additional drive member to drive the air inlet end to embed into or disengage from the opening of the metal tube, which simplifies the design of the present device.

[0008] Furthermore, the air inlet is arranged on the end face of the air inlet end, and the air pressure detection device also includes: a ball, which is rotatably arranged on the end face of the air inlet end, and a plurality of balls are arranged, and the plurality of balls are distributed at intervals along the circumference of the air inlet. When the air inlet end is located outside the opening of the metal tube and has not yet been embedded, the air inlet end contacts the tube sheet through the balls under the action of the elastic member, and the rolling characteristics of the balls significantly reduce the friction resistance of the running mechanism during movement, so that the movement of the device on the tube sheet is smoother and more efficient, and energy consumption and wear are reduced. The plurality of balls are distributed at intervals along the circumference of the air inlet, and they are embedded in the metal tube opening with minimal resistance during the process of the air inlet end being embedded in the metal tube opening, which can reduce the direct friction of the air inlet end on the inner wall of the metal tube, avoid damage to the metal tube, and extend the service life of the metal tube.

[0009] Furthermore, the air intake portion includes: a first connecting pipe and a second connecting pipe connected to each other, the end of the first connecting pipe away from the second connecting pipe is connected to the gas inlet, the second connecting pipe extends along the first direction, the second connecting pipe is movably arranged on the running mechanism along the first direction, the first connecting pipe is made of a flexible material, and the second connecting pipe is made of a rigid material; a gas nozzle is arranged at the end of the second connecting pipe away from the first connecting pipe, the gas nozzle is connected to the second connecting pipe, and the air intake is arranged on the gas nozzle. The flexible characteristics of the first connecting pipe enable its gas nozzle to better adapt to slight changes in the position and direction of the metal pipe opening, improve the adaptability of the detection device to metal pipes of different sizes and arrangements, and make the detection process more flexible and efficient. The second connecting pipe made of rigid material is movably arranged on the running mechanism along the first direction, ensuring the stability of the gas nozzle when it contacts the metal pipe opening, and avoiding jamming or damage caused by slight deviations in the position of the pipe.

[0010] Furthermore, the air pressure detection device further includes: a guide portion, which is arranged on the walking mechanism, and the guide portion cooperates with the second connecting pipe to guide the second connecting pipe so that the second connecting pipe moves along the first direction. This enables the air nozzle to be more smoothly inserted into or removed from the opening of the metal pipe, reduces the risk of friction and damage, and improves the working efficiency and detection accuracy of the air pressure detection device as a whole.

[0011] Furthermore, the walking mechanism includes an active walking part, a vertical telescopic part and a driven walking part, the active walking part walks in the horizontal direction, the top of the vertical telescopic part is connected to the active walking part, the bottom of the vertical telescopic part is connected to the driven walking part, the vertical telescopic part telescopes in the vertical direction to adjust the vertical distance of the driven walking part relative to the active walking part, and the air pressure detection part is arranged on the driven walking part. The array distribution characteristics of the metal tube ends of the tubular air preheater on the tube sheet, the above arrangement can enable the device of this scheme to efficiently traverse and detect the metal tube orifices of different heights in each column.

[0012] Furthermore, the active walking part includes a first chassis, a first walking wheel component, a first magnetic attraction part and a driving part. The first walking wheel component, the driving part and the first magnetic attraction part are all arranged on the first chassis. The first magnetic attraction part is used to magnetically cooperate with the tubular air preheater. The driving part is drivingly connected to the first walking wheel component so that the active walking part walks in a horizontal direction. Such an arrangement has a simple structure and can improve the stability of the device when walking on a vertical walking wall.

[0013] Furthermore, the air pressure detection device further comprises: a guide roller rotatably arranged on the first chassis, the axial direction of the guide roller is the same as the thickness direction of the first chassis, the peripheral surface of the guide roller is used to abut against the first plane, and the first plane is perpendicular to the walking surface for the active walking part to walk. Such arrangement enables the guide roller to abut against the side of the driven walking part to walk, thereby reducing the wear of the guide roller and the side edge of the tube plate.

[0014] Furthermore, the driven walking part includes a second chassis, a second walking wheel component and a second magnetic attraction part, the second walking wheel component and the second magnetic attraction part are both arranged on the second chassis, the air pressure detection part is arranged on the second chassis, and the driven walking part walks in a vertical direction. Such an arrangement has a simple structure and can improve the stability of the driven walking part walking on a vertical walking wall.

[0015] Furthermore, the vertical telescopic part includes: a rotating shaft, which is rotatably arranged on the driven walking part, and the rotating shaft extends in the horizontal direction; a traction rope, which is passed through the active walking part, one end of which is fixedly arranged on the driven walking part, and the other end of which is fixedly arranged on the rotating shaft, and the driven walking part is hung on the active walking part through the traction rope; a driving member, which is arranged on the driven walking part and is connected to the rotating shaft driving, so that the traction rope can be reeled in or unwound; a traction rope guide, which is arranged on the driven walking part and is located above the rotating shaft, and the traction rope is wound around the rotating shaft through the traction rope guide to guide the traction rope. With such an arrangement, the structure is simple, and it is easy to adjust the vertical distance between the driven walking part and the active walking part.

[0016] By applying the technical solution of the present invention, the pressure at the opening of the end of the pipe of the tubular air preheater can be detected. Specifically, when the air pressure detection device is working, the walking mechanism moves on the tube sheet of the tubular air preheater. When the air pressure detection device moves to the opening position of the target metal tube, the air inlet end of the air pressure detection mechanism is opposite to the end opening of the metal tube and embedded in the opening. The gas enters the air pressure detection part through the air inlet, and the air pressure detection part records the gas pressure value. After the detection is completed, the air inlet end is out of the end opening of the metal tube, and the walking mechanism continues to move. The setting of this solution replaces manual operation, avoids missed detection and false detection caused by human factors, improves the comprehensiveness and reliability of detection, can detect the leakage point of the metal tube early, can be repaired in time, avoids energy waste caused by leakage, and improves the working efficiency and economic benefits of the circulating fluidized bed boiler. 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 A schematic diagram showing the working state of the air pressure detection device provided by an embodiment of the present invention on a wall surface is shown;

[0019] Figure 2 A schematic diagram of the structure of the cooperation between the driven walking part, the air pressure detection mechanism and the vertical telescopic part provided in an embodiment of the present invention is shown;

[0020] Figure 3 A cross-sectional view of an air intake portion provided by an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram of the structure of an active walking unit provided by an embodiment of the present invention is shown;

[0022] Figure 5 A partial structural schematic diagram of a vertical telescopic portion provided in an embodiment of the present invention is shown.

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

[0024] 1. Walking mechanism;

[0025] 11. Active walking part; 111. First chassis; 112. First walking wheel component; 113. First magnetic attraction part; 114. Driving part; 115. Traction rope suspension part;

[0026] 12. vertical telescopic part; 121. rotating shaft; 122. traction rope; 123. driving member; 124. traction rope guide member;

[0027] 13. driven walking part; 131. second chassis; 132. second walking wheel component; 133. second magnetic attraction part;

[0028] 2. Air pressure detection mechanism;

[0029] 21. Air pressure detection unit; 2101. Gas inlet;

[0030] 22. air inlet; 2201. air inlet end; 2202. air outlet end;

[0031] 221, first connecting pipe; 222, second connecting pipe; 223, air nozzle;

[0032] 3. Elastic parts;

[0033] 4. Ball bearing;

[0034] 5. Guide part;

[0035] 6. Guide roller. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0037] like Figures 1 to 3 As shown, an embodiment of the present invention provides an air pressure detection device, which includes a walking mechanism 1 and an air pressure detection mechanism 2. The walking mechanism 1 is used to walk on the tube sheet of the tubular air preheater; the air pressure detection mechanism 2 includes an air pressure detection part 21 and an air intake part 22 connected to each other, the air pressure detection part 21 is arranged on the walking mechanism 1, the air pressure detection part 21 has a gas inlet 2101, the air intake part 22 has an air intake end 2201 and an air outlet end 2202 arranged oppositely, the air outlet end 2202 is connected to the gas inlet 2101, the air intake end 2201 has an air inlet, the air intake end 2201 extends along a first direction, the air intake end 2201 is movably arranged on the walking mechanism 1 along the first direction, and the air intake end 2201 is used to be embedded in or out of the opening of the metal tube of the air preheater; wherein the first direction is perpendicular to the walking direction of the walking mechanism 1 and perpendicular to the walking wall surface.

[0038] By applying the technical solution of the present invention, the pressure at the opening of the end of the pipe of the tubular air preheater can be detected. Specifically, when the air pressure detection device is working, the walking mechanism 1 walks on the tube plate of the tubular air preheater. When the air pressure detection device walks to the opening position of the target metal tube, the air inlet end 2201 of the air pressure detection mechanism 2 is opposite to the end opening of the metal tube and embedded in the opening. The gas enters the air pressure detection unit 21 through the air inlet, and the air pressure detection unit 21 records the gas pressure value. After the detection is completed, the air inlet end 2201 is removed from the end opening of the metal tube, and the walking mechanism 1 continues to move. The setting of this solution replaces manual operation, avoids missed detection and false detection caused by human factors, improves the comprehensiveness and reliability of detection, can detect the leakage point of the metal tube early, can be repaired in time, avoids energy waste caused by leakage, and improves the working efficiency and economic benefits of the circulating fluidized bed boiler.

[0039] In the embodiment of the present scheme, the end face of the air inlet end 2201 of the air inlet portion 22 is arc-shaped, and the air pressure detection device further includes an elastic member 3, one end of the elastic member 3 is connected to the running mechanism 1, and the other end is connected to the air inlet end 2201, and the elastic member 3 is used to apply a force to the air inlet end 2201 to embed it into the opening of the metal tube. Specifically, when the running mechanism 1 moves to the end opening position of the target metal tube, the air inlet end 2201 of the air inlet portion 22 can be smoothly embedded in the opening of the metal tube under the push of the elastic member 3. When the detection is completed, the running mechanism 1 continues to move forward, and under the action of the rebound force of the elastic member 3, the air inlet end 2201 with the arc-shaped end face can be disengaged from the opening of the metal tube, ready to detect the next metal tube. The above-mentioned arrangement makes it unnecessary for the present device to set an additional driving member to drive the air inlet end 2201 to embed or disengage from the opening of the metal tube, which simplifies the design of the present device.

[0040] Furthermore, the air inlet is arranged on the end face of the air inlet end 2201, and the air pressure detection device also includes a ball 4, which is rotatably arranged on the end face of the air inlet end 2201, and a plurality of balls 4 are arranged, and the plurality of balls 4 are distributed at intervals along the circumference of the air inlet. When the air inlet end 2201 is located outside the opening of the metal tube and has not yet been embedded, the air inlet end 2201 contacts the tube sheet through the ball 4 under the action of the elastic member 3, and the rolling characteristics of the ball 4 significantly reduce the friction resistance of the walking mechanism 1 during movement, so that the movement of the device on the tube sheet is smoother and more efficient, and energy consumption and wear are reduced. The plurality of balls 4 are distributed at intervals along the circumference of the air inlet, and they are embedded in the metal tube opening with the minimum resistance during the process of the air inlet end 2201 being embedded in the metal tube opening, which can reduce the direct friction of the air inlet end 2201 on the inner wall of the metal tube, avoid damage to the metal tube, and extend the service life of the metal tube.

[0041] In the embodiment of the present scheme, the air inlet 22 includes a first connecting pipe 221, a second connecting pipe 222 and a gas nozzle 223 connected in sequence, the end of the first connecting pipe 221 away from the second connecting pipe 222 is connected to the gas inlet 2101, the second connecting pipe 222 extends along the first direction, the second connecting pipe 222 is movably arranged on the walking mechanism 1 along the first direction, the first connecting pipe 221 is made of a flexible material, and the second connecting pipe 222 is made of a rigid material; the gas nozzle 223 is arranged at the end of the second connecting pipe 222 away from the first connecting pipe 221, the gas nozzle 223 is connected to the second connecting pipe 222, and the air inlet is arranged on the gas nozzle 223. The first connecting pipe 221 made of a flexible material provides a certain buffering effect when the gas nozzle 223 contacts the opening of the metal pipe, reduces hard collision, reduces the risk of damage to the opening of the metal pipe, and also protects the end face of the gas nozzle 223, thereby extending the service life of the detection device. The flexibility of the first connecting pipe 221 enables its air nozzle 223 to better adapt to slight changes in the position and direction of the metal pipe opening, improving the adaptability of the detection device to metal pipes of different sizes and arrangements, making the detection process more flexible and efficient. The second connecting pipe 222 made of a rigid material is movably arranged on the walking mechanism 1 along the first direction, ensuring the stability of the air nozzle 223 when in contact with the metal pipe opening, and avoiding jamming or damage caused by slight deviations in the position of the pipe.

[0042] Furthermore, the air pressure detection device also includes a guide portion 5, which is arranged on the walking mechanism 1, and the guide portion 5 cooperates with the second connecting pipe 222 to guide the second connecting pipe 222 to move along the first direction. The guiding cooperation design of the guide portion 5 and the second connecting pipe 222 can ensure that the second connecting pipe 222 moves smoothly along the preset first direction (perpendicular to the walking direction) during the movement, avoiding jamming or increased resistance caused by deviation from the preset path. This allows the air nozzle 223 to be more smoothly inserted into or removed from the opening of the metal pipe, reducing the risk of friction and damage, and overall improving the working efficiency and detection accuracy of the air pressure detection device.

[0043] Specifically, in the embodiment of the present solution, one end of the elastic member 3 is connected to the walking mechanism 1 through the guide portion 5 , and the other end is connected to the air nozzle 223 , and the elastic member 3 is sleeved on the second connecting pipe 222 .

[0044] Specifically, the walking mechanism 1 includes an active walking part 11, a vertical telescopic part 12 and a driven walking part 13. The active walking part 11 walks in the horizontal direction, the top of the vertical telescopic part 12 is connected to the active walking part 11, the bottom of the vertical telescopic part 12 is connected to the driven walking part 13, the vertical telescopic part 12 is telescoped in the vertical direction to adjust the vertical spacing of the driven walking part 13 relative to the active walking part 11, and the air pressure detection part 21 is arranged on the driven walking part 13. In the embodiment of the present scheme, the guide part 5 is also arranged on the driven walking part 13. The array distribution characteristics of the metal tube ends of the tubular air preheater on the tube sheet require that the air pressure detection device can efficiently traverse and detect the metal tube mouths of different heights in each column. The design of the walking mechanism 1 of the present device, especially the configuration of the active walking part 11, the vertical telescopic part 12 and the driven walking part 13, can meet this requirement.

[0045] Specifically, the active walking part 11 is located above the driven walking part 13. When the detection device moves, the active walking part 11 first moves in the horizontal direction, and the driven walking part 13 follows it to move in the horizontal direction; when detecting metal pipes of different heights in the same column, after the active walking part 11 stops moving, under the action of the vertical telescopic part 12, the driven walking part 13 drives the air pressure detection part 21 to move in the vertical direction. This arrangement allows the driven walking part 13 to be aligned with the active walking part 11 in the height direction, and combined with the precise adjustment of the vertical telescopic part 12, it can effectively reduce the situation of missed detection.

[0046] like Figure 4 As shown, in the embodiment of the present scheme, the active walking part 11 includes a first chassis 111, a first walking wheel component 112, a first magnetic attraction part 113 and a driving part 114. The first walking wheel component 112, the driving part 114 and the first magnetic attraction part 113 are all arranged on the first chassis 111. The first magnetic attraction part 113 is used to cooperate with the tubular air preheater by magnetic attraction. The driving part 114 is connected to the first walking wheel component 112 by driving so that the active walking part 11 can walk in the horizontal direction. The first magnetic attraction part 113 is adsorbed on the tube sheet of the tubular air preheater by magnetic force, providing a stable support for the entire device. The driving connection design of the driving part 114 and the first walking wheel component 112 enables the active walking part 11 to accurately control the direction and speed of travel. The above-mentioned arrangement enables the device to move in the horizontal direction and traverse each column of metal tubes, thereby improving the detection efficiency.

[0047] Furthermore, the air pressure detection device further includes a guide roller 6, which is rotatably arranged on the first chassis 111, the axial direction of the guide roller 6 is the same as the thickness direction of the first chassis 111, and the peripheral surface of the guide roller 6 is used to abut against the first plane, and the first plane is perpendicular to the walking surface for the active walking part 11 to walk. When the active walking part 11 walks on the top of the tubular air preheater, and the driven walking part 13 walks on the side of the tubular air preheater, the top is located above the side, and the top is perpendicular to the side, the guide roller 6 can abut against the side where the driven walking part 13 walks, reducing the wear of the guide roller 6 and the side of the tube sheet.

[0048] Specifically, along the width direction of the first chassis 111 , the circumference of the guide roller 6 away from the center of the first chassis 111 protrudes outwardly from the side surface of the first running wheel component 112 away from the center direction of the first chassis 111 .

[0049] like Figure 2 and Figure 3 As shown, in the embodiment of the present solution, the driven walking part 13 includes a second chassis 131, a second walking wheel component 132 and a second magnetic attraction part 133, the second walking wheel component 132 and the second magnetic attraction part 133 are both arranged on the second chassis 131, the air pressure detection part 21 is arranged on the second chassis 131, and the driven walking part 13 walks in a vertical direction. The arrangement of the second walking wheel component 132 and the second magnetic attraction part 133 ensures the stability and adhesion of the driven walking part 13 when it moves in the vertical direction.

[0050] Specifically, the air nozzle 223 and the end of the second connecting pipe 222 away from the first connecting pipe 221 are both located at the bottom of the second chassis 131, and the second connecting pipe 222 is movably arranged on the second chassis 131 in a direction perpendicular to the second chassis 131. The guide part 5 includes a guide cylinder, which is arranged on the second chassis 131. The second connecting pipe 222 is movably inserted into the guide cylinder and cooperates with the guide of the guide cylinder.

[0051] like Figure 2 , Figure 4 and Figure 5As shown, in the embodiment of the present scheme, the vertical telescopic part 12 includes a rotating shaft 121, a traction rope 122, a driving member 123 and a traction rope guide 124. The rotating shaft 121 is rotatably arranged on the driven walking part 13, and the rotating shaft 121 extends in the horizontal direction; the traction rope 122 is passed through the active walking part 11, one end of the traction rope 122 is fixedly arranged on the driven walking part 13, and the other end of the traction rope 122 is fixedly arranged on the rotating shaft 121, and the driven walking part 13 is hung on the active walking part 11 through the traction rope 122; the driving member 123 is arranged on the driven walking part 13 and is drivingly connected with the rotating shaft 121, so that the traction rope 122 can be reeled or unwound; the traction rope guide 124 is arranged on the driven walking part 13, located above the rotating shaft 121, and the traction rope 122 is wound around the rotating shaft 121 through the traction rope guide 124, so as to guide the traction rope 122.

[0052] The setting of the rotating shaft 121 allows the traction rope 122 to be wound and unwound thereon, and the vertical distance between the driven walking part 13 and the active walking part 11 can be accurately adjusted through the control of the driving member 123.

[0053] Furthermore, a traction rope suspension member 115 is respectively provided at the two ends of the first chassis 111 in the walking direction, two groups of vertical telescopic parts 12 are provided, the rotating shafts 121 of the two vertical telescopic parts 12 are respectively provided at the two sides of the walking direction of the second chassis 131, and the driving members 123 of the two vertical telescopic parts 12 are respectively provided at the two sides of the walking direction of the second chassis 131. The two traction ropes 122 are respectively connected to the first chassis 111 through the two traction rope suspension members 115. Such a configuration can further improve the stability of the driven walking part 13 in the vertical direction.

[0054] 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.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, 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 actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only 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, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0056] 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.

[0057] 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.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0059] 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 pressure detection device, characterized in that: The air pressure detection device comprises: A walking mechanism (1), used for walking on a tube sheet of a tubular air preheater; An air pressure detection mechanism (2) comprises an air pressure detection portion (21) and an air intake portion (22) connected to each other, the air pressure detection portion (21) being arranged on the walking mechanism (1), the air pressure detection portion (21) having a gas inlet (2101), the air intake portion (22) having an air intake end (2201) and an air outlet end (2202) arranged opposite to each other, the air outlet end (2202) being connected to the gas inlet (2101), the air intake end (2201) having an air inlet, the air intake end (2201) extending along a first direction, the air intake end (2201) being movably arranged on the walking mechanism (1) along the first direction, and the air intake end (2201) being used to be inserted into or removed from the opening of the metal tube of the air preheater; The first direction is perpendicular to the walking direction of the walking mechanism (1) and perpendicular to the walking wall surface.

2. The air pressure detection device according to claim 1, characterized in that: The end surface of the air inlet end (2201) of the air inlet portion (22) is arc-shaped, and the air pressure detection device further comprises: An elastic member (3), one end of the elastic member (3) being connected to the walking mechanism (1), and the other end being connected to the air inlet end (2201), the elastic member (3) being used to apply a force to the air inlet end (2201) so as to be embedded in the opening of the metal tube.

3. The air pressure detection device according to claim 2, characterized in that: The air inlet is arranged on the end surface of the air inlet end (2201), and the air pressure detection device further comprises: A ball (4) is rotatably arranged on the end surface of the air inlet end (2201), and a plurality of the ball (4) are arranged, and the plurality of the ball (4) are distributed at intervals along the circumference of the air inlet.

4. The air pressure detection device according to claim 2, characterized in that: The air intake portion (22) comprises: A first connecting pipe (221) and a second connecting pipe (222) are connected to each other, one end of the first connecting pipe (221) away from the second connecting pipe (222) is in communication with the gas inlet (2101), the second connecting pipe (222) extends along the first direction, the second connecting pipe (222) is movably arranged on the walking mechanism (1) along the first direction, the first connecting pipe (221) is made of a flexible material, and the second connecting pipe (222) is made of a rigid material; An air nozzle (223) is arranged at an end of the second connecting pipe (222) away from the first connecting pipe (221); the air nozzle (223) is in communication with the second connecting pipe (222); and the air inlet is arranged on the air nozzle (223).

5. The air pressure detection device according to claim 4, characterized in that: The air pressure detection device also includes: A guide portion (5) is arranged on the walking mechanism (1), and the guide portion (5) cooperates with the second connecting pipe (222) in a guiding manner so that the second connecting pipe (222) moves along the first direction.

6. The air pressure detection device according to claim 1, characterized in that: The walking mechanism (1) comprises an active walking part (11), a vertical telescopic part (12) and a driven walking part (13); the active walking part (11) walks in a horizontal direction; the top end of the vertical telescopic part (12) is connected to the active walking part (11); the bottom end of the vertical telescopic part (12) is connected to the driven walking part (13); the vertical telescopic part (12) telescopes in a vertical direction to adjust the vertical spacing of the driven walking part (13) relative to the active walking part (11); and the air pressure detection part (21) is arranged on the driven walking part (13).

7. The air pressure detection device according to claim 6, characterized in that: The active walking part (11) comprises a first chassis (111), a first walking wheel component (112), a first magnetic attraction part (113) and a driving part (114); the first walking wheel component (112), the driving part (114) and the first magnetic attraction part (113) are all arranged on the first chassis (111); the first magnetic attraction part (113) is used for magnetically cooperating with the tubular air preheater; the driving part (114) is drivingly connected to the first walking wheel component (112) so that the active walking part (11) moves in a horizontal direction.

8. The air pressure detection device according to claim 7, characterized in that: The air pressure detection device also includes: A guide roller (6) is rotatably arranged on the first chassis (111); the axial direction of the guide roller (6) is the same as the thickness direction of the first chassis (111); the peripheral surface of the guide roller (6) is used to abut against a first plane; the first plane is perpendicular to a walking surface for the active walking part (11) to walk.

9. The air pressure detection device according to claim 6, characterized in that: The driven walking part (13) comprises a second chassis (131), a second walking wheel component (132) and a second magnetic attraction part (133); the second walking wheel component (132) and the second magnetic attraction part (133) are both arranged on the second chassis (131); the air pressure detection part (21) is arranged on the second chassis (131); and the driven walking part (13) walks in a vertical direction.

10. The air pressure detection device according to claim 6, characterized in that: The vertical telescopic portion (12) comprises: A rotating shaft (121) is rotatably arranged on the driven walking part (13), and the rotating shaft (121) extends in a horizontal direction; A traction rope (122), wherein the traction rope (122) is passed through the active walking part (11), one end of the traction rope (122) is fixedly arranged on the driven walking part (13), the other end of the traction rope (122) is fixedly arranged on the rotating shaft (121), and the driven walking part (13) is hung on the active walking part (11) through the traction rope (122); A driving member (123) is arranged on the driven walking part (13) and is drivingly connected to the rotating shaft (121) so as to reel in or unwind the traction rope (122).

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