Boiler expansion indication acquisition device and acquisition method

Abstract

The invention relates to a boiler expansion indication collecting device and method, the device comprises a collecting annular track seat and a collecting assembly, the collecting annular track seat is located outside a boiler to be detected, a boiler fixing ring is arranged in the collecting annular track seat, the whole boiler fixing ring is of a flexible structure, and the boiler fixing ring is installed on the outer wall of the boiler to be detected; a surrounding assembly is installed on the collecting annular rail base and can circularly move around the collecting annular rail base. A feeding adjusting assembly is arranged on the upper surface of the surrounding assembly, a reciprocating swing assembly is arranged on the left side of the feeding adjusting assembly and slidably connected with the surrounding assembly through a sliding rail assembly, a collecting assembly is arranged on the left side of the reciprocating swing assembly, and one end of the outer side of the collecting assembly makes contact with a to-be-detected boiler. The boiler expansion variable quantity is collected through a collecting assembly; the device has the advantages of reasonable structure, convenience in use, real-time swell capacity acquisition, flexibility and convenience in adjustment and high practicability.

Description

Technical Field

[0001] This invention belongs to the technical field of boiler expansion acquisition devices, specifically relating to a boiler expansion indication acquisition device and acquisition method. Background Technology

[0002] Boiler expansion indicators are used to monitor the expansion of thick-walled pressure vessels such as steam drums and headers during boiler ignition, start-up, and pressure rise, as well as during large-scale load changes during normal operation. This device can promptly detect deformation of evaporating equipment caused by improper ignition and pressure rise, or poor installation and maintenance, preventing cracks and leaks due to uneven expansion. It is generally installed at the steam drum, headers, and main steam header. Existing expansion indicator acquisition devices consist of two parts: a support and an indicator head. The support is typically welded to the steel frame at the fixed end of the boiler, which presents the following problems: First, when the boiler surface deforms due to temperature changes, changes in heating surface stress, foundation settlement, etc., the expansion indicator cannot be adjusted adaptively. Adjustment can only be achieved by removing the expansion indicator and re-welding it, which is time-consuming and labor-intensive. Second, most existing expansion indicators are mechanical, requiring frequent on-site observation by personnel. Furthermore, reading and recording changes does not allow for real-time observation of expansion changes. Manual reading can lead to delays in recording expansion indicators, errors in direction judgment, and inaccurate scale readings, affecting the accurate assessment of equipment expansion and potentially causing delayed detection of equipment hazards and damage. Thirdly, existing expansion indicators are generally fixed installations, unable to adjust their direction according to actual expansion indication needs, thus failing to meet the requirements for collecting expansion indications in different directions and lacking practicality. Therefore, it is essential to provide a boiler expansion indicator acquisition device and method that is structurally sound, easy to use, allows for real-time expansion measurement, offers flexible and convenient adjustment, and is highly practical. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a boiler expansion indicator and acquisition device and method that is structurally reasonable, easy to use, allows for real-time expansion measurement, is flexible and convenient to adjust, and is highly practical.

[0004] The objective of this invention is achieved as follows: a boiler expansion indication and acquisition device, comprising an acquisition annular track seat and an acquisition component. The acquisition annular track seat is located outside the boiler under test and has a boiler fixing ring inside. The boiler fixing ring is a flexible structure and is installed on the outer wall of the boiler under test. A circumferential component is installed on the acquisition annular track seat, and the circumferential component can move around the acquisition annular track seat. A feed adjustment component is provided on the upper surface of the circumferential component, and a reciprocating swing component is provided on the left side of the feed adjustment component. The reciprocating swing component is slidably connected to the circumferential component through a slide rail component. An acquisition component is provided on the left side of the reciprocating swing component, and one outer end of the acquisition component is in contact with the boiler under test. When the boiler expands, the acquisition component acquires the amount of boiler expansion change.

[0005] The boiler fixing ring includes a flexible bonded upper ring plate and a flexible bonded lower ring plate. Multiple positioning strips are provided on the outer periphery of both the flexible bonded upper ring plate and the flexible bonded lower ring plate. A flexible shrinkage joint is provided between the flexible bonded upper ring plate and the flexible bonded lower ring plate. The flexible shrinkage joint is connected to the flexible bonded upper ring plate and the flexible bonded lower ring plate respectively through a hoop.

[0006] In this invention, the boiler fixing ring is a flexible structure, so it can be bonded to the outside of the boiler and can also be applied to other devices to be tested in actual use. Moreover, in actual use, longitudinal level instruments and other devices can be installed on the positioning strip to ensure that the boiler fixing ring is installed in place. The flexible expansion joint not only avoids obstruction of boiler expansion, but also works with the acquisition components to realize the quantitative acquisition of boiler expansion data.

[0007] The collection ring track base includes a bottom ring plate, a toothed ring plate is arranged above the bottom ring plate, a track ring plate is arranged above the toothed ring plate, and concave ring tracks are arranged inside and outside the track ring plate.

[0008] The surrounding assembly includes a fan-shaped plate. A set of outer guide wheels is arranged on the bottom surface of the fan-shaped plate relative to the outer side of the track ring plate, and a set of inner guide wheels is arranged relative to the inner side of the track ring plate. The outer guide wheels and inner guide wheels are respectively rolledly connected to the corresponding concave ring track. A driver is arranged on the upper surface of the fan-shaped plate, and a surrounding gear that meshes with the gear ring plate is installed at the output end of the driver.

[0009] In this invention, the surrounding component can rotate around the collection ring track seat, thus moving along the circumference of the boiler to collect expansion data at different locations of the boiler according to actual needs, without the need to disassemble and reinstall the collection component, greatly improving flexibility and mobility.

[0010] The feed adjustment assembly includes a rectangular frame with a T-shaped plate in the middle. An input bevel gear is installed inside the frame, and a stabilizing bevel gear and an output bevel gear are installed on the left and right sides of the input bevel gear, respectively.

[0011] The output bevel gear shaft is connected to an output spur gear, which meshes with a driven gear. The driven gear is mounted on a T-plate and has a feed screw inside. One end of the feed screw is connected to a nut seat, and the other end is a smooth rod connected to the reciprocating swing assembly.

[0012] In this invention, the feed adjustment component can adjust the distance between the acquisition component and the boiler under test. When the boiler undergoes surface deformation due to temperature changes, stress changes on the heated surface, foundation settlement, etc., the feed adjustment component can adjust the relative position between the acquisition component and the boiler under test, so that the expansion indicator mechanism formed by the acquisition component and the boiler under test can be zeroed, without the need to disassemble and re-weld for adjustment, saving time and effort, and making the operation convenient and quick.

[0013] The reciprocating swing assembly includes a base plate, a turntable gear is provided on the upper surface of the base plate, the turntable gear is meshed with a drive gear, a set of positioning pins are symmetrically arranged on the outer periphery of the turntable gear, and a stopper that cooperates with the positioning pins is installed on the upper surface of the turntable gear.

[0014] A first mounting sleeve seat is provided on the upper surface of the turntable gear on one side of the stopper, and a second mounting sleeve seat is provided above the turntable gear. The first mounting sleeve seat and the second mounting sleeve seat are connected by multiple hinged connecting rod groups. The first mounting sleeve seat is connected to the acquisition component through a connecting rod.

[0015] In this invention, the reciprocating swing component can adjust the direction of the acquisition component, enabling the acquisition component to be adjusted to face left, right, and between left and right sides. This facilitates adjustment of the acquisition direction according to actual needs and meets the requirements of different acquisition knobs. As a result, the acquisition component can be used not only for boiler expansion acquisition but also for expansion acquisition of other related equipment, greatly improving the practicality of the device.

[0016] The acquisition component includes a U-shaped acquisition base, a sensor is arranged on the left side of the acquisition base, a detection steel needle is arranged on the left side of the sensor, an extension rod is arranged inside the acquisition base, and a main controller is arranged on the right side of the acquisition base.

[0017] In this invention, the sensor can be a wire displacement sensor, laser displacement sensor, magnetostrictive displacement sensor, or other sensors for automatic data acquisition and recording. The main controller acquires and processes the data and uploads it to the monitoring backend or host computer for easy viewing by operators. There is no need for staff to go to the site to observe and read the data, and the change in expansion amount can be observed at any time. When the sensor fails to automatically acquire data, the expansion amount data can be mechanically acquired and read by using a probe steel needle, extension rod, and main controller.

[0018] A method for collecting boiler expansion indications, the method comprising the following steps: Step 1: Install the boiler fixing ring on the outer wall of the boiler to be tested, install the data acquisition ring track seat on the outside of the boiler fixing ring, and then use the reciprocating swing component to adjust the direction of the data acquisition component so that the data acquisition component corresponds to the boiler fixing ring; Step 2: Then, adjust the distance between the acquisition component and the boiler fixing ring by using the feed adjustment component, so that the detection steel needle of the acquisition component contacts the flexible contraction joint of the boiler fixing ring. Step 3: After the boiler receives the start-up command, the operator starts the data acquisition component and sets the time interval to 10-60 minutes; Step 4: After the time is set, the data acquisition component will automatically start collecting and saving the first set of data. Subsequent data will be collected and saved at time intervals until the data acquisition is completed.

[0019] The beneficial effects of this invention are as follows: This invention provides a boiler expansion indicator acquisition device and method. In use, the acquisition component is adjusted via the surrounding assembly and the acquisition ring track seat, allowing for adjustment of the acquisition position between the acquisition component and the boiler fixing ring. Multiple positions can be detected, resulting in greater adaptability. The boiler fixing component is bonded to the outer wall of the boiler and secured in place using positioning strips. Furthermore, the flexible expansion joint effectively prevents boiler expansion from being obstructed, causing less damage to the boiler body compared to welding fixation, and assembly is more convenient and faster. The acquisition component is mounted on a reciprocating swing assembly, enabling quick changes in the detection direction. The distance between the acquisition component and the boiler can be adjusted via the feed adjustment assembly, enhancing practicality. The acquisition component can measure data using a probe or sensor, enabling timed automatic measurement and enhanced automation. Even if a sensor malfunctions, detection can still be performed using the probe without affecting normal detection. This invention has the advantages of reasonable structure, ease of use, real-time expansion acquisition, flexible and convenient adjustment, and strong practicality. Attached Figure Description

[0020] Figure 1 This is a top view of the present invention.

[0021] Figure 2 This is a perspective view of the circular track base for data acquisition according to the present invention. Figure 1 .

[0022] Figure 3 This is a perspective view of the circular track base for data acquisition according to the present invention. Figure 2 .

[0023] Figure 4 This is a schematic diagram of the boiler fixing ring of the present invention.

[0024] Figure 5 This is a schematic diagram of the feed adjustment component of the present invention.

[0025] Figure 6 This is a schematic diagram of the reciprocating swing assembly of the present invention.

[0026] Figure 7 This is a schematic diagram of the acquisition component of the present invention.

[0027] In the diagram: 1. Collection ring track seat; 11. Bottom ring plate; 12. Toothed ring plate; 13. Track ring plate; 14. Concave ring track; 2. Boiler fixing ring; 21. Flexible bonded upper ring plate; 22. Flexible bonded lower ring plate; 23. Positioning strip; 24. Flexible expansion joint (to prevent expansion obstruction). 25. Hoop ring 3. Encircling assembly 31. Sector plate 32. Outer guide wheel 33. Inner guide wheel 34. Driver 35. Encircling gear 4. Feed adjustment assembly 41. Frame 42. T-plate 43. Input bevel gear 44. Stabilizing bevel gear 45. Output bevel gear 46. Output spur gear 47. Driven gear 48. Feed screw 49. Nut seat 5. Reciprocating swing assembly 51. Base plate 52. Turntable gear 53. Drive gear 54. Positioning pin 55. Stopper 56. First mounting sleeve seat 57. Second mounting sleeve seat 58. Hinge connecting rod assembly 59. Connecting rod 6. Acquisition assembly 61. Acquisition seat 62. Sensor 63. Detection steel needle 64. Extension rod 65. Main controller. Detailed Implementation

[0028] The present invention will be further described below with reference to the embodiments and / or accompanying drawings. Example 1

[0029] like Figure 1-7As shown, a boiler expansion indicator and acquisition device includes an acquisition annular track seat 1 and acquisition component 6. The acquisition annular track seat 1 is located outside the boiler under test, and a boiler fixing ring 2 is provided inside it. The boiler fixing ring 2 is a flexible structure and is installed on the outer wall of the boiler under test. A surrounding component 3 is installed on the acquisition annular track seat 1, and the surrounding component 3 can move around the acquisition annular track seat 1 in a circle. A feed adjustment component 4 is provided on the upper surface of the surrounding component 3. A reciprocating swing component 5 is provided on the left side of the feed adjustment component 4. The reciprocating swing component 5 is slidably connected to the surrounding component 3 through a slide rail component. The acquisition component 6 is provided on the left side of the reciprocating swing component 5. One outer end of the acquisition component 6 is in contact with the boiler under test. When the boiler expands, the acquisition component 6 collects the amount of boiler expansion change.

[0030] The boiler fixing ring 2 includes a flexible bonded upper ring plate 21 and a flexible bonded lower ring plate 22. Multiple positioning strips 23 are provided on the outer periphery of both the flexible bonded upper ring plate 21 and the flexible bonded lower ring plate 22. A flexible contraction joint 24 is provided between the flexible bonded upper ring plate 21 and the flexible bonded lower ring plate 22. The flexible contraction joint 24 is connected to the flexible bonded upper ring plate 21 and the flexible bonded lower ring plate 22 respectively through a hoop 25.

[0031] In this embodiment, the boiler fasteners are detachably connected to the outer wall of the boiler by means of bonding, magnetic attraction, etc., which causes less damage to the boiler body compared to welding and is more convenient and quick to assemble.

[0032] The collection ring track seat 1 includes a bottom ring plate 11, a toothed ring plate 12 is arranged above the bottom ring plate 11, a track ring plate 13 is arranged above the toothed ring plate 12, and concave ring tracks 14 are arranged inside and outside the track ring plate 13.

[0033] The surrounding assembly 3 includes a fan-shaped plate 31. A set of outer guide wheels 32 are arranged on the bottom surface of the fan-shaped plate 31 relative to the outer side of the track ring plate 13, and a set of inner guide wheels 33 are arranged on the inner side of the track ring plate 13. The outer guide wheels 32 and the inner guide wheels 33 are respectively rolledly connected to the corresponding concave ring track 14. A driver 34 is arranged on the upper surface of the fan-shaped plate 31, and a surrounding gear 35 that meshes with the gear ring plate 12 is installed at the output end of the driver 34.

[0034] In this embodiment, the outer guide wheel and inner guide wheel of the surrounding component are connected to the track ring plate of the collecting annular track seat. Therefore, when the driver is started, the driver will drive the surrounding gear to rotate. Since the surrounding gear meshes with the gear ring plate, the surrounding gear will move along the gear ring plate. Under the stable guidance of the guide wheel and the track ring plate, the entire surrounding component moves around the circumference of the collecting annular track seat. This allows for adjustment of the collecting position of the collecting component relative to the boiler fixed ring, enabling the detection of multiple positions and providing greater adaptability. The use of two sets of guide wheels, inner and outer, in conjunction with the track ring plate makes the overall movement of the surrounding component more stable and reliable.

[0035] The feed adjustment component 4 includes a rectangular frame 41, a T-shaped plate 42 in the middle of the frame 41, an input bevel gear 43 inside the frame 41, and a stabilizing bevel gear 44 and an output bevel gear 45 on the left and right sides of the input bevel gear 43, respectively.

[0036] The output bevel gear 45 is shaft connected to the output spur gear 46, and the output spur gear 46 is meshed with the driven gear 47. The driven gear 47 is mounted on the T-shaped plate 42 and has a feed screw 48 inside. One end of the feed screw 48 is connected to the nut seat 49, and the other end is a smooth rod connected to the reciprocating swing assembly 5.

[0037] In this embodiment, a drive device drives the input bevel gear, which in turn drives the stable bevel gear and the output bevel gear to rotate. The output bevel gear then drives the output spur gear to rotate. Since the output spur gear meshes with the driven gear, it drives the driven gear to rotate. Because the feed screw is located inside the driven gear and engages with it, when the output spur gear drives the driven gear, it drives the feed screw to move. The length of the extended end of the feed screw is adjusted using the nut seat, thus enabling the reciprocating swing assembly to move on the sector plate. Furthermore, the reciprocating swing assembly is slidably connected to the upper surface of the sector plate via a guide rail assembly, ensuring reliable displacement. During the reciprocating swing assembly's displacement, the distance between the acquisition component and the flexible contraction joint of the boiler fixing ring is adjusted. This allows for zeroing of the acquisition component when surface deformation occurs in the boiler, and it is applicable to the expansion measurement of boilers of different specifications. It can also be adjusted according to actual measurement needs, making it highly practical and flexible.

[0038] The reciprocating swing assembly 5 includes a base plate 51, a turntable gear 52 is provided on the upper surface of the base plate 51, the turntable gear 52 is meshed with a drive gear 53, a set of positioning pins 54 are symmetrically arranged on the outer periphery of the turntable gear 52, and a stopper 55 that cooperates with the positioning pins 54 is installed on the upper surface of the turntable gear 52.

[0039] A first mounting sleeve seat 56 is provided on the upper surface of the turntable gear 52 on one side of the stopper 55, and a second mounting sleeve seat 57 is provided above the turntable gear 52. The first mounting sleeve seat 56 and the second mounting sleeve seat 57 are connected by multiple hinged connecting rod groups 58. The first mounting sleeve seat 56 is connected to the acquisition component 6 through a connecting rod 59.

[0040] In this embodiment, the first mounting sleeve seat and the second mounting sleeve seat are located on both sides of the stopper. The first mounting sleeve seat is mounted on the upper surface of the turntable gear, while the second mounting sleeve seat is mounted on the base plate above the turntable gear. When it is necessary to adjust the acquisition direction of the acquisition component, it is only necessary to use the drive device to power the drive gear, which will drive the turntable gear to rotate. Since the first mounting sleeve seat and the second mounting sleeve seat are connected by multiple hinged linkages, that is, multiple short rods are mounted on the end face of the first mounting sleeve seat, and multiple long rods are correspondingly mounted on the end face of the second mounting sleeve seat, the connection between the short rods and the long rods is located at the geometric center of the turntable gear, and the short rods and the long rods are movably connected by hinges. Therefore, when the turntable gear... When the wheel rotates, it drives the first mounting sleeve seat to rotate, changing the relative position of the first and second mounting sleeve seats. This results in three easily observable relative position changes: the first mounting sleeve seat can be positioned to the left, below, or to the right of the second mounting sleeve seat. This means the angle between the first and second mounting sleeve seats can vary between 90° and 270°. Simultaneously, a stopper and a set of positioning pins restrict the range of motion, allowing the acquisition direction of the acquisition components to be adjusted according to actual needs. This makes the acquisition device suitable not only for boiler expansion acquisition but also for acquiring other expansion quantities, greatly improving the overall practicality and versatility of the device.

[0041] The acquisition component 6 includes a U-shaped acquisition base 61, a sensor 62 is provided on the left side of the acquisition base 61, a detection steel needle 63 is provided on the left side of the sensor 62, an extension rod 64 is provided inside the acquisition base 61, and a main controller 65 is provided on the right side of the acquisition base 61.

[0042] This invention relates to a boiler expansion indicator acquisition device and method. In use, the acquisition component 6 is adjusted via the surrounding component 3 and the acquisition ring track seat 1, allowing for adjustment of the acquisition position of the acquisition component 6 and the boiler fixing ring 2. This enables the detection of multiple positions and enhances adaptability. The boiler fixing component 2 is bonded to the outer wall of the boiler and secured in place using the positioning strip 23. The flexible contraction joint 24 effectively prevents obstruction of boiler expansion, causing less damage to the boiler body compared to welding, and is more convenient and faster to assemble. The acquisition component 6 is mounted on the reciprocating swing component 5, allowing for quick changes in the detection direction. The distance between the acquisition component 6 and the boiler can be adjusted via the feed adjustment component 4, enhancing practicality. The acquisition component 6 can measure data via the probe needle 63 or the sensor 62, enabling timed automatic measurement and enhanced automation. Even if the sensor 62 malfunctions, detection can still be performed via the probe needle 63 without affecting normal detection. This invention has the advantages of reasonable structure, ease of use, real-time expansion acquisition, flexible and convenient adjustment, and strong practicality. Example 2

[0043] like Figure 1-7 As shown, a method for collecting boiler expansion indications includes the following steps: Step 1: Install the boiler fixing ring on the outer wall of the boiler to be tested, install the data acquisition ring track seat on the outside of the boiler fixing ring, and then use the reciprocating swing component to adjust the direction of the data acquisition component so that the data acquisition component corresponds to the boiler fixing ring; Step 2: Then, adjust the distance between the acquisition component and the boiler fixing ring by using the feed adjustment component, so that the detection steel needle of the acquisition component contacts the flexible contraction joint of the boiler fixing ring. Step 3: After the boiler receives the start-up command, the operator starts the data acquisition component and sets the time interval to 10-60 minutes; Step 4: After the time is set, the data acquisition component will automatically start collecting and saving the first set of data. Subsequent data will be collected and saved at time intervals until the data acquisition is completed.

[0044] This invention relates to a boiler expansion indicator acquisition device and method. In use, the acquisition component 6 is adjusted via the surrounding component 3 and the acquisition ring track seat 1, allowing for adjustment of the acquisition position of the acquisition component 6 and the boiler fixing ring 2. This enables the detection of multiple positions and enhances adaptability. The boiler fixing component 2 is bonded to the outer wall of the boiler and secured in place using the positioning strip 23. The flexible contraction joint 24 effectively prevents obstruction of boiler expansion, causing less damage to the boiler body compared to welding, and is more convenient and faster to assemble. The acquisition component 6 is mounted on the reciprocating swing component 5, allowing for quick changes in the detection direction. The distance between the acquisition component 6 and the boiler can be adjusted via the feed adjustment component 4, enhancing practicality. The acquisition component 6 can measure data via the probe needle 63 or the sensor 62, enabling timed automatic measurement and enhanced automation. Even if the sensor 62 malfunctions, detection can still be performed via the probe needle 63 without affecting normal detection. This invention has the advantages of reasonable structure, ease of use, real-time expansion acquisition, flexible and convenient adjustment, and strong practicality.

Claims

1. A boiler expansion indicator acquisition device, comprising an acquisition annular track seat and acquisition components, characterized in that: The acquisition annular track is located outside the boiler under test and has a boiler fixing ring inside. The boiler fixing ring is a flexible structure and is installed on the outer wall of the boiler under test. A circumferential assembly is installed on the acquisition annular track, which can move around the acquisition annular track. A feed adjustment assembly is provided on the upper surface of the circumferential assembly, and a reciprocating swing assembly is provided on the left side of the feed adjustment assembly. The reciprocating swing assembly is slidably connected to the circumferential assembly through a slide rail assembly. A acquisition assembly is provided on the left side of the reciprocating swing assembly, and one end of the acquisition assembly is in contact with the boiler under test. When the boiler expands, the acquisition assembly collects the amount of expansion change of the boiler.

2. The boiler expansion indicator acquisition device as described in claim 1, characterized in that: The boiler fixing ring includes a flexible bonded upper ring plate and a flexible bonded lower ring plate. Multiple positioning strips are provided on the outer periphery of both the flexible bonded upper ring plate and the flexible bonded lower ring plate. A flexible shrinkage joint is provided between the flexible bonded upper ring plate and the flexible bonded lower ring plate. The flexible shrinkage joint is connected to the flexible bonded upper ring plate and the flexible bonded lower ring plate respectively through a hoop.

3. The boiler expansion indicator acquisition device as described in claim 2, characterized in that: The collection ring track base includes a bottom ring plate, a toothed ring plate is arranged above the bottom ring plate, a track ring plate is arranged above the toothed ring plate, and concave ring tracks are arranged inside and outside the track ring plate.

4. The boiler expansion indicator acquisition device as described in claim 3, characterized in that: The surrounding assembly includes a fan-shaped plate. A set of outer guide wheels is arranged on the bottom surface of the fan-shaped plate relative to the outer side of the track ring plate, and a set of inner guide wheels is arranged relative to the inner side of the track ring plate. The outer guide wheels and inner guide wheels are respectively rolledly connected to the corresponding concave ring track. A driver is arranged on the upper surface of the fan-shaped plate, and a surrounding gear that meshes with the gear ring plate is installed at the output end of the driver.

5. The boiler expansion indicator acquisition device as described in claim 4, characterized in that: The feed adjustment assembly includes a rectangular frame with a T-shaped plate in the middle. An input bevel gear is installed inside the frame, and a stabilizing bevel gear and an output bevel gear are installed on the left and right sides of the input bevel gear, respectively.

6. The boiler expansion indication and acquisition device as described in claim 5, characterized in that: The output bevel gear shaft is connected to an output spur gear, which meshes with a driven gear. The driven gear is mounted on a T-plate and has a feed screw inside. One end of the feed screw is connected to a nut seat, and the other end is a smooth rod connected to the reciprocating swing assembly.

7. The boiler expansion indication and acquisition device as described in claim 6, characterized in that: The reciprocating swing assembly includes a base plate, a turntable gear is provided on the upper surface of the base plate, the turntable gear is meshed with a drive gear, a set of positioning pins are symmetrically arranged on the outer periphery of the turntable gear, and a stopper that cooperates with the positioning pins is installed on the upper surface of the turntable gear.

8. The boiler expansion indication and acquisition device as described in claim 7, characterized in that: A first mounting sleeve seat is provided on the upper surface of the turntable gear on one side of the stopper, and a second mounting sleeve seat is provided above the turntable gear. The first mounting sleeve seat and the second mounting sleeve seat are connected by multiple hinged connecting rod groups. The first mounting sleeve seat is connected to the acquisition component through a connecting rod.

9. A boiler expansion indication and acquisition device as described in claim 8, characterized in that: The acquisition component includes a U-shaped acquisition base, a sensor is arranged on the left side of the acquisition base, a detection steel needle is arranged on the left side of the sensor, an extension rod is arranged inside the acquisition base, and a main controller is arranged on the right side of the acquisition base.

10. A boiler expansion indication acquisition method as described in claim 1, characterized in that: The method includes the following steps: Step 1: Install the boiler fixing ring on the outer wall of the boiler to be tested, install the data acquisition ring track seat on the outside of the boiler fixing ring, and then use the reciprocating swing component to adjust the direction of the data acquisition component so that the data acquisition component corresponds to the boiler fixing ring; Step 2: Then, adjust the distance between the acquisition component and the boiler fixing ring by using the feed adjustment component, so that the detection steel needle of the acquisition component contacts the flexible contraction joint of the boiler fixing ring. Step 3: After the boiler receives the start-up command, the operator starts the data acquisition component and sets the time interval to 10-60 minutes; Step 4: After the time is set, the data acquisition component will automatically start collecting and saving the first set of data. Subsequent data will be collected and saved at time intervals until the data acquisition is completed.

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