Finned tube root wind loss detection device

Abstract

The invention belongs to the technical field of economizer finned tube detection, and particularly relates to a finned tube root wind loss detection device, which comprises a detector, a circumferential guide mechanism and a transverse guide mechanism, and is characterized in that the detector is suspended above a finned tube and is used for detecting the distance from the detector to the surface of a finned tube body; the circumferential guide mechanism is used for controlling the detector to rotate around the central axis of the finned tube body; according to the invention, the detector moves circumferentially by taking the center of the pipe as the axis through the circumferential guide mechanism, multiple measurements along the length of the groove are realized, the detector can be ensured to be always vertical to the pipe wall during each measurement, and the detection error caused by inclination of the tool is avoided; the height positioning relative to the surface of the pipe wall is stable, so that the maximum depth value of the groove can be conveniently obtained; the cross section of the groove is measured for multiple times through the transverse guide mechanism, and the deepest position can be prevented from being missed by measuring the irregular groove bottom for multiple times.

Description

Technical Field

[0001] The present invention belongs to the technical field of economizer finned tube detection, and particularly relates to a wind loss detection device for the root of finned tubes. Background Art

[0002] In a thermal power plant, the economizer is arranged in the tail flue of the boiler, and the installation environment is a high-dust position. The economizer includes a plurality of finned tubes arranged vertically downward along the gas flow direction; the finned tubes include a tube body and fin plates perpendicular to the tube body, and the fin plates are densely designed at an interval of 20 mm.

[0003] Since the finned tubes are in a high-temperature and high-pressure gas flow and steam environment, and the finned tubes are blown by the gas flow for a long time, in order to prevent wind erosion, protection needs to be carried out on the tube surface. The existing protection is to cover a layer of stainless steel shingles on the tube wall surface. However, due to limited processing accuracy, there will be gaps between the shingles and the roots of the fins. The fins have the effect of blocking the gas flow on the windward side, and the gas flow will turn sharply downward, and the gas flow will pour into the gaps, causing more serious wind erosion at the roots of the fins. Wind erosion is the formation of grooves on the tube wall surface, resulting in the thinning of the tube wall, and finally causing a tube explosion accident under the action of high-temperature and high-pressure water or steam inside the tube. When a tube explosion occurs inside the boiler, it is necessary to stop the machine for maintenance, and the economic loss is huge. Therefore, power generation enterprises attach great importance to effectively reducing and avoiding boiler tube explosions.

[0004] Detecting the grooves generated by blow damage and evaluating the tube explosion risk are the current work that can be done. However, due to the small fin spacing, there is currently no tool for detecting the bottom grooves, so only a conventional vernier caliper can be used for detection. The vernier caliper is a manual tool. Although it can display relatively accurate values itself, due to unstable operation, it is easy to cause reading errors. Specifically, when operating the vernier caliper for measurement, first, the ruler body should be perpendicular to the tube wall. However, since most of the tube body is blocked by the fins, it is not easy for the operator to judge whether the ruler body is currently perpendicular to the tube wall, and there is a certain error in the measured value when it is tilted and standing at the bottom of the groove; second, due to the small fin spacing, it is impossible to clearly observe the groove situation. The vernier caliper blindly probes the groove, and it often happens that it probes outside the groove or the side wall of the groove. At the same time, due to the irregular wind erosion at the bottom of the groove, it is impossible to determine whether the measured position is the deepest part of the groove; third, manual operation is slow, and repeated measurement has low efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is the inconvenience and low accuracy in measuring the depth of the grooves generated by wind loss on the tube wall of finned tubes in the prior art.

[0006] The technical solution adopted by the present invention to solve the above problems is: A finned tube root wind loss detection device includes a detector, a circumferential guiding mechanism, and a lateral guiding mechanism. Among them, the detector is suspended above the finned tube and is used to detect the distance from itself to the surface of the finned tube body; the circumferential guiding mechanism is used to control the detector to rotate around the central axis of the finned tube body at a constant radius; the lateral guiding mechanism is used to control the detector to move parallel to the central axis of the finned tube body.

[0007] The present invention adopting the above structure, compared with the prior art, has the following beneficial effects: 1) The circumferential guiding mechanism enables the detector to move circumferentially with the pipe center as the axis, realizing multiple measurements along the length of the groove. Each time after moving, the detector can ensure that it is always perpendicular to the pipe wall during measurement, avoiding detection errors caused by tool tilt; 2) It has a stable height positioning relative to the pipe wall surface, making the data of multiple measurements have a unified reference, which is convenient for obtaining the maximum depth value of the groove; 3) Through the lateral guiding mechanism, multiple measurements are carried out on the cross-section of the groove. Multiple measurements for an irregular groove bottom can avoid missing the deepest position.

[0008] As a preference, a further technical solution of the above structure is: The circumferential guiding mechanism includes: a C-shaped clamping ring, whose arc length is greater than or equal to 180 degrees, and it clings to the outer wall surface of the finned tube body; a support column, vertically fixed to the top of the C-shaped clamping ring, and a handle is arranged at the top of the support column.

[0009] The beneficial effects obtained from the above features: The C-shaped clamping ring effectively and conveniently obtains the central axis of the finned tube body, realizes the rotation of the detector around the finned tube, and conducts depth measurements at multiple positions along the length direction of the groove; the height support of the support column enables the detector to have a stable reference value and avoids hurting hands by the fins during operation.

[0010] The lateral guiding mechanism includes: a lateral through hole, arranged on the surface of the support column, whose axis is parallel to the central axis of the finned tube body, one end is a spring sleeve hole adapted to a spiral spring, and the other end is a guiding hole adapted to a guide rod; the guide rod is slidably installed in the lateral through hole, the front end protrudes from the outer wall of the spring sleeve hole, the rear end protrudes from the outer wall of the guiding hole and a stop piece is fixedly installed at the rear end; a mounting frame, inside which the detector is installed, a window is arranged on the lower surface of the mounting frame, and the side wall of the mounting frame is fixedly connected to the front end of the guide rod; a spiral spring, sleeved on the guide rod, the front end abuts against the side wall of the mounting frame, and the rear end abuts against the rear side wall of the spring sleeve hole.

[0011] The beneficial effects obtained from the above features: The guide rod is used to drive the detector to move axially, and the spring is convenient for the detector to reset.

[0012] Optionally, the mounting frame includes a base plate fixedly connected to the guide rod, side support plates are fixedly connected to both sides of the base plate, a sliding groove is arranged on the inner wall of the side support plates, the height of the sliding groove matches that of the detector, a lock hole is arranged on any one of the side support plates, and a locking bolt is installed in the lock hole.

[0013] Optionally, the mounting bracket includes a base plate fixedly connected to the guide rod. U-groove support plates are fixedly connected to both sides of the base plate. The space between the lower ends of the U-groove support plates forms the window. A top clamp is installed at the upper end of the U-groove support plate. The top clamp consists of a C-shaped clamp and a pressure plate. The C-shaped clamp includes an L-shaped fixed part and an L-shaped movable part. The movable part is elastically connected to the fixed part. The top clamp is fixed to the top of the detector and is located below the upper end of the U-groove support plate. A screw is fixedly connected to the upper surface of the top clamp. The pressure plate is arranged above the upper end of the U-groove support plate. A through hole is provided on the pressure plate, and the through hole is sleeved on the screw. A threaded sleeve is installed at the upper end of the screw.

[0014] Beneficial effects obtained from the above features: The detectors in the above two embodiments can be movably installed in the mounting bracket, which can conveniently correct the position of the laser emission point.

[0015] The detector includes a battery, a switch, a laser ranging module, a control circuit, and a microprocessor. Among them, the control pin of the laser ranging module is connected to the output pin of the microprocessor, the input pin of the microprocessor is connected to the switch, and the laser ranging module continuously measures after the switch is turned on.

[0016] Beneficial effects obtained from the above features: By using laser for ranging, the reading accuracy is high and the speed is fast.

[0017] The switch of the detector is arranged on the surface of the baffle. A sleeve is also installed outside the guide hole. One end of the sleeve is fixedly connected to the support column, and the other end is installed with a cover, and the cover contacts the switch.

[0018] Beneficial effects obtained from the above features: This structure combines the control of the switch with the operation of adjusting the predetermined position of the detector, making it convenient to use.

[0019] The periphery of the baffle is in sealed cooperation with the inner wall of the sleeve, and air holes are provided on the cover.

[0020] Beneficial effects obtained from the above features: This structure can slow down the retraction speed of the detector. For grooves with a smaller width, the detector has sufficient time for data processing.

[0021] A magnet is arranged on the side of the support column, and the magnet attracts the fin plate, and the attraction force allows the magnet to slide on the surface of the fin plate.

[0022] Beneficial effects obtained from the above features: The magnetic attraction force inhibits the axial swing of the support column, but has less resistance to the circumferential movement of the support column, which can enhance the stability of the detector during circumferential movement and avoid the situation of misalignment caused by the inclination of the detection laser. Description of the Drawings

[0023] Figure 1 is the overall structure diagram of the detection device provided by the present invention; Figure 2 is the assembly structure diagram of the guide rod of the detection device provided by the present invention; Figure 3 This is Embodiment 1 of the mounting bracket of the present invention; Figure 4 This is Embodiment 2 of the mounting bracket of the present invention; Figure 5 This is the exploded view of the structure of Embodiment 2 of the mounting bracket of the present invention; Figure 6 This is the schematic structural diagram of the detector of the detection device provided by the present invention; Figure 7 This is the schematic diagram of the installation position of the detection device provided by the present invention in the use state; Figure 8 This is the schematic diagram of the circumferential guiding mechanism of the present invention driving the detector to perform multi-point measurement along the groove; Figure 9 This is the schematic diagram of the lateral guiding mechanism of the present invention driving the detector to perform multi-point measurement on the cross-section at the A position of the groove.

[0024] In the figure: 1. Circumferential guiding mechanism; 101. C-shaped clamping ring; 102. Support pillar; 103. Handle; 104. Magnet; 2. Lateral guiding mechanism; 201. Mounting bracket; 202. Helical spring; 203. Guide rod; 204. Flap; 3. Detector; 301. Laser ranging module; 302. Microprocessor; 303. Display module; 304. Battery; 4. Sleeve; 5. Switch; 6. Sealing cover; 7. Air hole; 8. Finned tube body; 9. Finned plate; 10. Groove; 2011. Base plate; 2012. Side support plate; 2013. Slide groove; 2014. Locking bolt; 2015. U-groove support plate; 2016. Fixed part; 2017. Pressure plate; 2018. Threaded sleeve; 2019. Movable part; 2020. Screw;

[0025] A, B, and C are the positions of different measurement cross-sections taken by the detector in the longitudinal direction of the groove; ① to ⑦ are different measurement points of the detector on one measurement cross-section. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0027] See Figures 1 to 2 , the finned tube root wind loss detection device provided by the present invention includes a detector 3, a circumferential guiding mechanism 1, and a lateral guiding mechanism 2; The detector 3 is suspended above the finned tube and is used to detect the distance from itself to the surface of the finned tube body 8; The circumferential guiding mechanism 1 is used to control the detector 3 to rotate around the central axis of the finned tube body 8 at a constant radius; The lateral guiding mechanism 2 is used to control the detector 3 to move parallel to the central axis of the finned tube body 8.

[0028] As an option, the circumferential guiding mechanism 1 includes: A C-shaped snap ring 101 with an arc length greater than or equal to 180 degrees, which is grasped on the outer wall surface of the finned tube body 8; A support column 102 is vertically fixed to the top of the C-shaped snap ring 101, and a handle 103 is provided at the top of the support column 102.

[0029] See Figure 8 , the C-shaped snap ring 101 effectively and conveniently obtains the center of the finned tube body 8, enables the detector 3 to rotate coaxially around the finned tube, and performs depth measurements at multiple positions along the long direction of the groove 10, such as Figure 8 the A position, B position, and C position shown. The height support of the support column 102 enables the detector 3 to have a stable rotation radius as a reference value and avoids hurting the hand by the fins during operation. When calculating the depth of the groove 10, the distance value L1 from the detector 3 to the bottom of the groove is subtracted by the distance value L2 from the detector 3 to the pipe wall surface. The stable reference value means that when the device measures at different positions of the groove 10, the value L2 from the detector 3 to the pipe wall surface is constant. Therefore, only the difference between L2 and the value greater than L2 needs to be calculated, reducing the calculation amount.

[0030] The support column 102 can adopt a telescopic structure.

[0031] As an option, the lateral guiding mechanism 2 includes: A lateral through hole is provided on the surface of the support column 102, its axis is parallel to the central axis of the finned tube body 8, one end is a spring sleeve hole adapted to the helical spring 202, and the other end is a guiding hole adapted to the guide rod 203; The guide rod 203 is slidably installed in the lateral through hole, the front end protrudes from the outer wall of the spring sleeve hole, and the rear end protrudes from the outer wall of the guiding hole and a stop piece 204 is fixedly installed at the rear end; The mounting bracket 201 internally mounts the detector 3, a window is provided on the lower surface of the mounting bracket 201, and the side wall of the mounting bracket 201 is fixedly connected to the front end of the guide rod 203; The helical spring 202 is sleeved on the guide rod 203, its front end abuts against the side wall of the mounting bracket 201, and its rear end abuts against the rear side wall of the spring sleeve hole.

[0032] See Figure 9 , the guide rod 203 is used to drive the detector 3 to move axially, and the helical spring 202 facilitates the detector 3 to translate and retract. In this solution, the detector 3 measures the depths of multiple points on the cross-section of the groove 10 during the retraction process using the helical spring 202, such as Figure 9Seven measurement points ① to ⑦, among which ① to ⑤ are all inside the groove. The No. ② measurement is the deepest point of the groove 10, showing the maximum distance value. After ⑥, the value has no fluctuation or very little fluctuation, indicating that the laser hits the pipe wall surface, and the measurement at this position ends.

[0033] See Figure 6 , the detector 3 includes a battery 304, a switch 5, a laser ranging module 301, a control circuit, and a microprocessor 302. The control pin of the laser ranging module 301 is connected to the output pin of the microprocessor 302. The input pin of the microprocessor 302 is connected to the switch 5. The laser ranging module 301 continuously measures after the switch 5 is turned on. Of course, the detector 3 is not limited to only including the above-mentioned electronic components, and a display module 303, a host computer, etc. can also be configured. The display module 303 intelligently displays the measurement results (referring to only displaying the highest value after a certain continuous measurement, or sequentially displaying all feedback values). By using laser for ranging, the reading accuracy is high, the speed is fast, and it can be combined with the microprocessor 302 or the host computer to achieve automatic comparison and directly give the deepest value.

[0034] The detector 3 of this solution is assembled and installed based on the laser ranging module 301. The laser ranging module 301 preferably selects an electronic module product with a smaller volume. The ranging range within 1 meter and the accuracy of 0.01 can meet the requirements, such as: Features FSTOF2002x0D, Microvoid Technology MT-01P, etc.

[0035] As an embodiment of this solution, since the detector 3 is designed to move along the long direction of the groove 10, multiple cross-sections on the groove 10 are selected, and then multiple measurements are made horizontally on each "cross-section" to comprehensively detect the damage degree of the pipe body. When the detector 3 rotates around the finned tube, the laser ranging module does not work. When multiple continuous detections are required on each cross-section of the groove 10, the laser is fired for measurement. For convenient operation, the microprocessor 302 and the control circuit can be used to control the operation of the laser ranging module 301. Those skilled in the art can select the corresponding microprocessor 302, circuit board module, etc. according to the type and function of the laser ranging module 301 without creative labor, so the structure of the detector 3 will not be described in detail.

[0036] See Figure 3 , Embodiment 1 of the mounting bracket 201. The mounting bracket 201 includes a base plate 2011 fixedly connected to the guide rod 203. Side support plates 2012 are fixedly connected to both sides of the base plate 2011. A chute 2013 is provided on the inner wall of the side support plate 2012. The height of the chute 2013 matches that of the detector 3. A lock hole is provided on either side support plate 2012, and a locking bolt 2014 is installed in the lock hole. The detector 3 moves along the chute 2013 to adjust its position, and the locking bolt 2014 is used to fix the detector 3.

[0037] SeeFigure 4 , Figure 5 , Embodiment Two of the mounting bracket 201. The mounting bracket 201 includes a base plate 2011 fixedly connected to the guide rod 203. U-groove brackets 2015 are fixedly connected to both sides of the base plate 2011. The intervals at the lower ends of the U-groove brackets 2015 form the said window. Top clamps are installed at the upper ends of the U-groove brackets 2015. The top clamps are composed of C-shaped clamps and pressing plates 2017. The C-shaped clamps include L-shaped fixing parts 2016 and L-shaped movable parts 2019. The movable parts 2019 are elastically connected to the fixing parts 2016. The top clamps are fixed at the top of the detector 3 and are located below the upper ends of the U-groove brackets 2015. A screw 2020 is fixedly connected to the upper surface of the top clamp. The pressing plate 2017 is arranged above the upper ends of the U-groove brackets 2015. Through holes are provided on the pressing plate 2017. The through holes are sleeved on the screw 2020. A threaded sleeve 2018 is installed at the upper end of the screw 2020.

[0038] Since the groove 10 caused by wind loss is located at the root of the windward surface of the fin plate 9, the laser ranging module 301 is fixedly designed. If there is an assembly error and it is easy to move beyond the limit during movement, it cannot be adjusted, resulting in the laser hitting the fin plate 9 and there will be many invalid results. In the above two embodiments, the detector 3 can be movably installed in the mounting bracket 201. Using the movable mounting structure, when the laser emission point moves closer to the fin plate 9, it can stop at a position close to the side surface of the fin plate 9, so as to effectively detect the range where the groove 10 is located. Especially in the above Embodiment Two, the top clamp is used to clamp the top of the detector 3. After loosening the threaded sleeve 2018, pull the threaded sleeve 2018, which drives the stud 2020 and also drives the detector 3 to move. After tightening the threaded sleeve 2018, the pressing plate 2017 and the top clamp are pressed tightly for position locking, which can more conveniently adjust the position of the detector 3 and has better stability after positioning. The window is used for the laser to pass through and directly emit to the surface of the pipe body.

[0039] In the detector 3, there are various choices for the type of the switch 5, and there are also various choices for the type of the laser ranging module 301. High-frequency sensors can be selected and cooperate with the microprocessor 302 and the control circuit to continuously collect data. The switch 5 is turned on and off by active operation, or can be automatically turned on and off according to the detection situation.

[0040] Optionally, the switch 5 of the detector 3 is arranged on the surface of the baffle 204. A sleeve 4 is also installed outside the guiding hole. One end of the sleeve 4 is fixedly connected to the support column 102, and the other end is installed with a cover 6. When the helical spring 202 is compressed, the cover 6 abuts against the switch 5.

[0041] See Figure 9 , a magnet 104 is arranged on the side surface of the support column 102. The magnet 104 is attracted to the fin plate 9, and the attraction force allows the magnet 104 to slide on the surface of the fin plate 9. The magnetic attraction force inhibits the axial swing of the support column 102, but has less resistance to the circumferential movement of the support column 102, which can enhance the stability of the detector 3 during circumferential movement and avoid the situation of misalignment caused by the inclination of the detection laser.

[0042] The width of the C-shaped snap ring 101 of the present invention is slightly smaller than the spacing between the two fin plates 9, so that it can reach the surface of the fin tube body 8; the struts 102 can have the same thickness, but the width should be slightly larger to facilitate the support of the guide rod 203 and the detector 3; the handle 103 is a cylinder and a sphere with a diameter of 4 cm - 5 cm and is held in the palm; the mounting bracket 201 should have a structure convenient for the thumb to hook and pull, such as the screw 2020 structure on the top of the pressing plate 2017.

[0043] See Figures 7 to 9 , the usage method of the present invention: First step, the operator holds the handle 103 with four fingers to operate the detection device, inserts the C-shaped snap ring 101 into the back side of the fin plate 9 where the groove 10 to be detected is located, and if there is a magnet 104, make it attract to the fin plate 9; Second step, the thumb pulls the mounting bracket 201 to move the detector 3 towards the surface of the strut 102, and hold it after pulling to the end; Third step, use the other hand to adjust the position of the detector 3 in the mounting bracket 201 to align the laser emission point with the root wall surface of the fin plate 9; Fourth step, release the mounting bracket 201, and the detector 3 retracts using the spring; Fourth step, when performing the retrieval, pull the device downward and rotate it to align the detector 3 with the range of the groove 10; Fifth step, then the thumb pulls the mounting bracket 201 to move inward. When the switch 5 contacts the cover 6, the power supply is turned on, and the laser ranging module 301 is kept powered on through the microprocessor 302. Immediately release the mounting bracket 201 after the switch 5 is turned on, and the spiral spring 202 pushes the detector 3 to move outward from the root of the fin plate. The laser ranging module 301 performs multiple measurements at a high frequency to obtain the values of multiple points at the bottom of the groove 10.

[0044] Considering that the width of the groove 10 is small due to wind loss, the detection frequency of the laser ranging module 301 is limited by factors such as the model, the processing speed of the microprocessor 302, and the response speed of the circuit. If the retraction speed is not restricted, the moving speed of the laser ranging module will be too fast to obtain enough data on the groove 10. Therefore, this solution also provides an embodiment that can slow down the moving speed of the detector 3, which is improved based on the above-mentioned sleeve 4 embodiment. Specifically: the periphery of the baffle 204 is hermetically fitted with the inner wall of the sleeve 4, and air holes 7 are provided on the wall of the sleeve 4 or on the cover 6. Under the action of a large finger pulling force, the baffle 204 moves towards the cover 6, and the air in the sleeve 4 is discharged through the air holes 7. Since the finger force is large and the air discharge speed is fast, the influence of the air holes 7 on the operation is small; after the baffle 204 fits with the cover 6, the inside of the sleeve 4 is in a vacuum. When the baffle 204 moves away from the cover 6 under the action of the spiral spring 202, the vacuum generates resistance to the baffle 204, and the presence of the air holes 7 enables air to slowly enter the sleeve 4, causing the baffle 204 to move only slowly. Since the air holes 7 are for reducing the air filling speed, setting one is sufficient to meet the requirements.

[0045] The present invention adopting the above structure has the following beneficial effects compared with the prior art: 1) The detector is centered on the axis of the pipeline through the circumferential guiding mechanism, enabling multiple measurements along the length of the groove. Each measurement after movement can ensure being always perpendicular to the pipe wall, avoiding detection errors caused by tool inclination; 2) It has a stable height positioning relative to the pipe wall surface, enabling the data of multiple measurements to have a unified reference, facilitating the obtaining of the maximum depth value of the groove; 3) The transverse guiding mechanism enables multiple measurements on the cross-section of the groove, and multiple measurements on the irregular groove bottom can avoid missing the deepest position.

[0046] The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present invention. Any equivalent changes made by using the content of the specification and drawings of the present invention are included within the scope of rights of the present invention.

Claims

1. A finned tube root wind loss detection device, characterized in that, Comprising: A detector (3), suspended above the finned tube, for detecting the distance from itself to the surface of the finned tube body (8); A circumferential guiding mechanism (1), for controlling the detector (3) to rotate around the central axis of the finned tube body (8) at a constant radius; A transverse guiding mechanism (2), for controlling the detector (3) to move parallel to the central axis of the finned tube body (8).

2. The finned tube root wind loss detection device according to claim 1, characterized in that, The circumferential guiding mechanism (1) includes: A C-shaped clamping ring (101), whose arc length is greater than or equal to 180 degrees, and which is clamped against the outer wall surface of the finned tube body (8); A pillar (102), vertically fixed to the top of the C-shaped clamping ring (101), and a handle (103) is provided at the top of the pillar (102).

3. The finned tube root wind loss detection device according to claim 1, characterized in that, The transverse guiding mechanism (2) includes: A transverse through hole, provided on the surface of the pillar (102), whose axis is parallel to the central axis of the finned tube body (8), one end of which is a spring sleeve hole adapted to a helical spring (202), and the other end is a guiding hole adapted to a guide rod (203); A guide rod (203), slidably installed in the transverse through hole, with the front end protruding from the outer wall of the spring sleeve hole, and the rear end protruding from the outer wall of the guiding hole and a stop piece (204) fixedly installed at the rear end; A mounting frame (201), with the detector (3) installed inside, a window is provided on the lower surface of the mounting frame (201), and the side wall of the mounting frame (201) is fixedly connected to the front end of the guide rod (203); A helical spring (202), sleeved on the guide rod (203), with the front end abutting against the side wall of the mounting frame (201), and the rear end abutting against the rear side wall of the spring sleeve hole.

4. The finned tube root wind loss detection device according to claim 3, characterized in that, The mounting frame (201) includes a base plate (2011) fixedly connected to the guide rod (203), side support plates (2012) are fixedly connected to both sides of the base plate (2011), a chute (2013) is provided on the inner wall of the side support plates (2012), the height of the chute (2013) matches that of the detector (3), and a locking hole is provided on either side support plate (2012), and a locking bolt (2014) is installed in the locking hole.

5. The finned tube root wind loss detection device according to claim 3, characterized in that, The mounting frame (201) includes a base plate (2011) fixedly connected to the guide rod (203), U-groove support plates (2015) are fixedly connected to both sides of the base plate (2011), the interval at the lower end of the U-groove support plates (2015) constitutes the window, a top clamp is installed at the upper end of the U-groove support plates (2015), the top clamp is composed of a C-shaped clamp and a pressing plate (2017), the C-shaped clamp includes an L-shaped fixing part (2016) and an L-shaped movable part (2019), and the movable part (2019) is elastically connected to the fixing part (2016); the top clamp is fixed at the top of the detector (3) and is located below the upper end of the U-groove support plates (2015), a screw (2020) is fixedly connected to the upper surface of the top clamp, the pressing plate (2017) is arranged above the upper end of the U-groove support plates (2015), a through hole is provided on the pressing plate (2017), the through hole is sleeved on the screw (2020), and a threaded sleeve (2018) is installed at the upper end of the screw (2020).

6. The finned tube root wind loss detection device according to claim 1, characterized in that: The detector (3) includes a laser ranging module (301), a switch (5), a battery (304), a control circuit, and a microprocessor (302), wherein the control pin of the laser ranging module (301) is connected to the output pin of the microprocessor (302), the input pin of the microprocessor (302) is connected to the switch (5), and the laser ranging module (301) continuously measures after the switch (5) is turned on.

7. The finned tube root wind loss detection device according to claim 3, characterized in that, The switch (5) of the detector (3) is arranged on the surface of the baffle (204), and a sleeve (4) is further installed outside the guiding hole. One end of the sleeve (4) is fixedly connected to the support column (102), and a cover (6) is installed at the other end. The cover (6) contacts the switch (5).

8. The finned tube root wind loss detection device according to claim 7, characterized in that, The periphery of the baffle (204) is in sealed cooperation with the inner wall of the sleeve (4), and air holes (7) are provided on the cover (6).

9. The finned tube root wind loss detection device according to claim 2, characterized in that, A magnet (104) is arranged on the side surface of the support column (102). The magnet (104) is attracted to the fin plate (9), and the attracting force allows the magnet (104) to slide on the surface of the fin plate (9).

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