An ultrasonic flowmeter for flow detection

Abstract

The present invention provides an ultrasonic flowmeter for flow detection, which relates to the field of flow detection. It includes a detection pipeline and a detection host. Detection probes are arranged on both sides of the detection host. There are two arc-shaped scrapers arranged on the surface of the detection pipeline. A wiping cloth and two winding shafts are arranged between the two arc-shaped scrapers. The wiping cloth is wound around the surfaces of the two wiping cloths, and a guide plate is provided. On one side of the detection probe, there is a second adjustment box. Inside the second adjustment box, there are a pressing block and several coupling agent syringes. Through the guiding action of a second guiding groove opened on the surface of the second adjustment box, several corresponding nozzles are arranged below the coupling agent syringe. The present invention improves and extends the maintenance time of the equipment and reduces the maintenance frequency of the staff through the automatic cleaning of the ultrasonic probe and the automatic addition of the coupling agent, thereby being beneficial to improving the safety factor of the staff in the dangerous operation area.

Description

Technical Field

[0001] The present invention relates to the technical field of flow detection, and particularly to an ultrasonic flowmeter for flow detection. Background Art

[0002] An ultrasonic flowmeter is a device that uses ultrasonic waves to measure the flow rate of a fluid. It is a non-contact measuring instrument that can achieve flow measurement without damaging the pipeline structure, and thus is widely used in the flow monitoring of fluids such as liquids, gases, and steam.

[0003] Related clamp-on ultrasonic flowmeters usually require regular replacement and maintenance of the probes, such as cleaning the residual coupling agent on the probes and replacing with new coupling agent, etc. When applied to high-altitude pipelines, underground pipelines, pipeline wells or pipelines inside large industrial equipment and other areas where it is difficult for workers to reach or dangerous working areas, the long maintenance time is not conducive to increasing the safety factor of workers. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an ultrasonic flowmeter for flow detection, which improves and extends the maintenance time of the equipment and reduces the maintenance frequency of workers through the automatic cleaning of the ultrasonic probe and the automatic addition of the coupling agent, thereby being conducive to increasing the safety factor of workers in dangerous working areas.

[0005] To solve the above technical problem, the technical solution of the present invention is as follows:

[0006] An ultrasonic flowmeter for flow detection, comprising a detection pipeline and a detection host. Detection probes are arranged on both sides of the detection host, including:

[0007] Two arc-shaped scrapers are arranged on the surface of the detection pipeline. A wiping cloth and two winding shafts are arranged between the two arc-shaped scrapers. The wiping cloth is wound around the surfaces of the two wiping cloths. When replacing the coupling agent of the detection probe, by moving the detection probe away from the detection pipeline along the radial direction of the detection pipeline, the arc-shaped scrapers move towards the direction close to the detection probe and initially scrape the coupling agent on the bottom surface of the detection probe. Then, the detection probe falls along the radial direction of the detection pipeline and presses on the upper surface of the wiping cloth. The rotation of the winding shaft drives the wiping cloth to wipe the surface of the detection pipeline and the bottom of the detection probe;

[0008] A guide plate for controlling the movement trajectory of the detection probe through a first guide groove opened on the surface of the guide plate;

[0009] On one side of the detection probe, a second adjustment box is provided. Inside the second adjustment box, a pressing block and several coupling agent syringes are arranged. Through the guiding action of a second guiding groove formed on the surface of the second adjustment box, after the pressing block presses one of the coupling agent syringes, it moves above the adjacent coupling agent syringe;

[0010] Below the coupling agent syringe, several corresponding spray heads are provided. The spray heads are used to evenly apply the coupling agent on the surface of the detection pipeline.

[0011] Furthermore, an adjustment rectangular rod is fixedly connected to the surface of the detection pipeline through a hoop. Two adjustment sliders are arranged in a first sliding groove formed on the surface of the adjustment rectangular rod. The adjustment sliders are slidably connected to the adjustment rectangular rod. The bottom surface of the adjustment slider is fixedly connected to an upper shell and a lower shell through a hoop. The detection probe is arranged on the surface of the upper shell. U-shaped rods are symmetrically and fixedly connected to the surface of the upper shell. The guiding plates are respectively slidably connected to the corresponding U-shaped rods.

[0012] Furthermore, a fixing frame is arranged between the two guiding plates. The detection probe is fixedly connected inside the fixing frame. First adjustment boxes are symmetrically arranged on both sides of the fixing frame. First connecting rods are symmetrically and fixedly connected to the surfaces of the first adjustment boxes. First restraint rods are slidably connected in first circular grooves formed on the surfaces of the first connecting rods. The first restraint rods are fixedly connected to the upper shell. First guiding blocks are fixedly connected to the surfaces of the first adjustment boxes. The two first guiding blocks are respectively located in corresponding first guiding grooves. Two check plates are arranged in the first guiding grooves. The check plates are rotatably connected to corresponding receiving grooves formed inside the first guiding grooves through two third bearings. A torsion spring is arranged on the surface of the check plate. Two ends of the torsion spring are respectively fixedly connected to the check plate and the guiding plate.

[0013] Furthermore, an L-shaped slider is slidably connected inside the first adjustment box. The L-shaped slider is fixedly connected to the fixing frame. Several compression springs are evenly arranged inside the first adjustment box. Two ends of the compression springs are respectively fixedly connected to the first adjustment box and the L-shaped slider.

[0014] Furthermore, a first connection block is fixedly connected between the two guide plates. A second lead screw is threadedly connected to a first threaded hole formed on the surface of the first connection block. The second lead screw is rotatably connected to the upper housing through two bearing seats. The arc-shaped scraping plate is arranged inside the upper housing. A second connection block is fixedly connected to the surface of the arc-shaped scraping plate away from the adjusting rectangular rod. The second connection block is slidably connected to the upper housing through a second chute formed on the surface of the upper housing. The second connection block is fixedly connected to the first connection block. Six-sided prism rods are symmetrically arranged inside the upper housing. The six-sided prism rods are rotatably connected to corresponding first through grooves formed on the surface of the upper housing through two first bearings. The winding shaft is rotatably connected to corresponding second through grooves formed on the surfaces of the two arc-shaped scraping plates through two second bearings. The winding shaft is slidably connected to the corresponding six-sided prism rod through a corresponding third chute formed on its surface. Flow guiding strips are symmetrically fixedly connected to the surface of the arc-shaped scraping plate close to the adjusting rectangular rod.

[0015] Furthermore, the second adjusting box is fixedly connected to a first installation groove formed on the surface of the upper housing. Second rectangular blocks are symmetrically arranged inside the second adjusting box. Second restraint rods are slidably connected to a number of third through grooves formed on the surfaces of the second rectangular blocks. The second restraint rods are fixedly connected to the second adjusting box. A number of third restraint rods are fixedly connected between the second rectangular blocks. The third restraint rods are respectively slidably connected to the pressing blocks through corresponding fourth through grooves formed on the surfaces of the pressing blocks. The pressing blocks are inserted into corresponding two second guide grooves. A first motor is installed on the surface of the second adjusting box. The output shaft of the first motor extends into the second adjusting box through a fifth through groove formed on the surface of the second adjusting box. A third lead screw is fixedly connected to the end of the output shaft of the first motor. The third lead screw is rotatably connected to a sixth through groove formed on the surface of the corresponding second rectangular block through a fourth bearing. A spring rope is fixedly connected to the surface of the pressing block. One end of the spring rope away from the pressing block is fixedly connected to one of the second rectangular blocks.

[0016] Furthermore, the coupling agent syringes are arranged at equal intervals below the pressing blocks. The coupling agent syringes are fixedly connected to the inner wall of the second adjusting box through brackets. An electric push rod is installed on the inner wall of the upper housing. The nozzle is arranged at the end of the output shaft of the electric push rod. The output shaft of the electric push rod is fixedly connected to the adjacent coupling agent syringe. Adjacent two coupling agent syringes are fixedly connected. The bottom surface of the coupling agent syringe abuts against the surface of the detection pipeline. The nozzle is connected to the inside of the corresponding coupling agent syringe through a hose. A rectifying plate is fixedly connected to the inside of the nozzle.

[0017] Further, a biaxial motor is mounted on the surface of the adjusting rectangular rod. Gear boxes are symmetrically arranged on both sides of the biaxial motor. The gear boxes are fixedly connected to the adjusting rectangular rod. A first incomplete gear is rotatably connected to the inside of the gear box through a fifth bearing. Output shafts of the biaxial motor are respectively fixedly connected to the corresponding first incomplete gears. A second incomplete gear is rotatably connected to the surface of the first incomplete gear through a first one-way bearing. The surface of the second incomplete gear abuts against the inner wall of the gear box. A first gear is meshed with the surface of the first incomplete gear. A rotating shaft of the first gear is rotatably connected in a corresponding seventh through groove formed on the surface of the gear box through a sixth bearing. A second gear is meshed with the surface of the first incomplete gear. A rotating shaft of the second gear is rotatably connected in a corresponding eighth through groove formed on the surface of the gear box through a seventh bearing.

[0018] Further, one end of each rotating shaft of the first gears is fixedly connected with a first flexible shaft. The end of the first flexible shaft far away from the first gear is fixedly connected with the corresponding second lead screw. One end of each rotating shaft of the second gears is fixedly connected with a second flexible shaft. The end of the second flexible shaft far away from the second gear is fixedly connected with one of the corresponding hexagonal prism rods.

[0019] Further, extrusion wedges are symmetrically and slidably connected in a fourth chute formed inside the adjusting slider. Spring rods are fixedly connected to the surfaces of the extrusion wedges. The ends of the spring rods far away from the extrusion wedges are fixedly connected to the inner wall of the adjusting slider. A second extrusion block is arranged between the two extrusion wedges. The second extrusion block is slidably connected with the adjusting slider. An adjusting threaded rod is threadedly connected in a second threaded hole formed on the surface of the second extrusion block. The adjusting threaded rod is rotatably connected to the adjusting slider through an eighth bearing at a position near the bottom end of the surface of the adjusting threaded rod.

[0020] The above scheme of the present invention has at least the following beneficial effects:

[0021] With the cooperation of components such as the arc-shaped scraper, the winding shaft and the wiping cloth in the above scheme of the present invention, the coupling agent at the bottom of the detection probe and on the surface of the detection pipeline is easily cleaned, reducing the influence of the residual coupling agent on the detection probe;

[0022] With the cooperation of components such as the guide plate, the U-shaped rod, the first guide block, the check plate and the torsion spring, the detection probe moves slightly, facilitating the cleaning and coating of the coupling agent;

[0023] With the cooperation of components such as the second adjustment box, the pressing block, the coupling agent injector and the nozzle in the above scheme, the device can perform the uniform coating action of the coupling agent multiple times, which is beneficial to reducing the frequency of manual operation;

[0024] By adjusting the cooperation of components such as the rectangular rod, adjustment slider, extrusion wedge block, spring rod, second extrusion block, adjustment screw rod, upper housing, and lower housing, the detection host and the detection probe are convenient to disassemble and assemble, so as to further improve the efficiency of manual maintenance, reduce the time of manual maintenance, and be beneficial to further improving the safety factor of the staff in the dangerous area. Brief Description of the Drawings

[0025] Figure 1 is the overall structural schematic diagram provided by the present invention.

[0026] Figure 2 is the schematic diagram of the second extrusion block in the present invention.

[0027] Figure 3 is the schematic diagram of the adjustment slider in the present invention.

[0028] Figure 4 is the schematic diagram of the fixed frame in the present invention.

[0029] Figure 5 is the schematic diagram of the first connecting block in the present invention.

[0030] Figure 6 is the schematic diagram of the second lead screw in the present invention.

[0031] Figure 7 is the schematic diagram of the hexagonal prism rod in the present invention.

[0032] Figure 8 is the schematic diagram of the wiping cloth in the present invention.

[0033] Figure 9 is the schematic diagram of the pressing block in the present invention.

[0034] Figure 10 is the schematic diagram of the rectifying plate in the present invention.

[0035] Figure 11 is in the present invention Figure 4 The enlarged view of A in.

[0036] Figure 12 is in the present invention Figure 6 The enlarged view of B in.

[0037] Figure 13 is the schematic diagram of the fixing path of the first guiding block in the first guiding groove in the present invention.

[0038] Figure 14 is the schematic diagram of the first incomplete gear and the second incomplete gear in the present invention.

[0039] In the figure: 101, detection host; 102, detection probe;

[0040] 201. Adjusting rectangular rod; 202. Adjusting slider; 204. Extrusion wedge block; 205. Spring rod; 206. Second extrusion block; 207. Adjusting threaded rod;

[0041] 301. Upper housing; 302. Lower housing; 304. Fixed frame; 305. First adjustment box; 306. L-shaped slider; 307. Compression spring; 308. First restraint rod; 309. First connecting rod; 310. First guide block; 311. U-shaped rod; 312. Guide plate; 313. First connecting block; 314. Second lead screw; 315. Check valve plate; 316. Torsion spring; 317. Second connecting block; 318. Arc-shaped scraper; 319. Hexagonal prism rod; 320. Winding shaft; 321. Wiping cloth; 322. Flow guiding strip;

[0042] 401. Second adjustment box; 402. Pressing block; 403. Second rectangular block; 404. Second restraint rod; 405. Third restraint rod; 406. Third lead screw; 407. First motor; 408. Spring rope; 409. Coupling agent syringe; 410. Electric push rod; 411. Sprayer; 412. Rectifying plate;

[0043] 501. Biaxial motor; 502. Gear box; 503. First incomplete gear; 504. First gear; 505. Second incomplete gear; 506. Second gear; 507. First flexible shaft; 508. Second flexible shaft;

[0044] 601. First guide groove; 602. Second guide groove. Detailed implementation manner

[0045] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0046] As Figures 1 to 14 shown, an embodiment of the present invention provides an ultrasonic flowmeter for flow detection, including a detection pipeline and a detection host 101. Detection probes 102 are arranged on both sides of the detection host 101, including:

[0047] Two arc-shaped scraping plates 318 are arranged on the surface of the detection pipeline. A wiping cloth 321 and two winding shafts 320 are arranged between the two arc-shaped scraping plates 318. The wiping cloth 321 is wound around the surfaces of the two wiping cloths 321. When replacing the coupling agent of the detection probe 102, by moving the detection probe 102 away from the detection pipeline along the radial direction of the detection pipeline, the arc-shaped scraping plates 318 move towards the direction close to the detection probe 102 and initially scrape the coupling agent on the bottom surface of the detection probe 102. Then, the detection probe 102 is lowered along the radial direction of the detection pipeline and pressed on the upper surface of the wiping cloth 321. The rotation of the winding shaft 320 drives the wiping cloth 321 to wipe the surface of the detection pipeline and the bottom of the detection probe 102;

[0048] The guide plate 312 is used to control the movement track of the detection probe 102 through the first guide groove 601 opened on the surface of the guide plate 312;

[0049] A second adjustment box 401 is arranged on one side of the detection probe 102. A pressing block 402 and a number of coupling agent syringes 409 are arranged inside the second adjustment box 401. Through the guiding action of the second guide groove opened on the surface of the second adjustment box 401, the pressing block 402 presses one of the coupling agent syringes 409 and then moves above the adjacent coupling agent syringe 409;

[0050] A number of corresponding nozzles 411 are arranged below the coupling agent syringe 409. The nozzles 411 are used to evenly apply the coupling agent on the surface of the detection pipeline.

[0051] The surface of the detection pipeline is fixedly connected with an adjusting rectangular rod 201 through a hoop. Two adjusting sliders 202 are arranged in the first sliding groove opened on the surface of the adjusting rectangular rod 201. The adjusting sliders 202 are slidably connected with the adjusting rectangular rod 201. The bottom surfaces of the adjusting sliders 202 are fixedly connected with an upper shell 301 and a lower shell 302 through hoops. The detection probe 102 is arranged on the surface of the upper shell 301. U-shaped rods 311 are symmetrically and fixedly connected to the surface of the upper shell 301. The guide plates 312 are respectively slidably connected with the corresponding U-shaped rods 311.

[0052] Extrusion wedges 204 are symmetrically and slidably connected in the fourth sliding groove opened inside the adjusting slider 202. Spring rods 205 are fixedly connected to the surfaces of the extrusion wedges 204. One ends of the spring rods 205 far away from the extrusion wedges 204 are fixedly connected to the inner walls of the adjusting sliders 202. A second extrusion block 206 is arranged between the two extrusion wedges 204. The second extrusion block 206 is slidably connected with the adjusting slider 202. An adjusting threaded rod 207 is threadedly connected in the second threaded hole opened on the surface of the second extrusion block 206. The adjusting threaded rod 207 is rotatably connected with the adjusting slider 202 through an eighth bearing near the bottom end of the surface.

[0053] In an embodiment of the present invention, during the installation process of the detection host 101 and the detection probe 102, the detection host 101 is fixedly installed on the adjustable rectangular rod 201, and the adjustable rectangular rod 201 is fixedly connected to the detection pipeline through a hoop. By adjusting the positions of the two adjustable sliders 202 inside the adjustable rectangular rod 201, the detection probes 102 are placed at appropriate positions. Select a suitable installation method to fix the hoop under the adjustable slider 202 on the detection pipeline. The hoop under the adjustable slider 202 is provided with threaded screw threads on the surfaces of both the upper hoop and the lower hoop. The upper housing 301 is fixedly connected to the upper hoop, and the lower housing 302 is fixedly connected to the lower hoop. When installing the detection probe 102 using the Z method, one of the detection probes 102 can be positioned below the other by fixing the lower hoop to the adjustable slider 202;

[0054] By sliding the adjustable slider 202 inside the adjustable rectangular rod 201, the two detection probes 102 on the surface of the upper housing 301 can be quickly matched to an accurate opposed angle. By rotating the adjustable threaded rod 207, the second pressing block 206 moves downward inside the adjustable slider 202, so that the second pressing block 206 simultaneously presses the inclined surfaces of the two pressing wedges 204, causing the two pressing wedges 204 to move respectively in the direction of stretching the corresponding spring rods 205 until the pressing wedges 204 abut against the inner wall of the adjustable rectangular rod 201;

[0055] Due to the large static friction between the pressing wedge 204 and the adjustable rectangular rod 201, when the hoop under the adjustable slider 202 is not yet fixed to the detection pipeline, the two upper housings 301 fixedly connected to the adjustable slider 202 through the upper hoop remain relatively fixed to the detection pipeline, that is, the two detection probes 102 are in a relatively fixed state, thereby improving the installation efficiency of the detection host 101 and the detection probe 102;

[0056] When it is necessary to replace the coupling agent, the corresponding detection probe 102 is moved radially away from the detection pipeline along the pipeline. By moving the arc-shaped scraper 318, the arc-shaped scraper 318 first preliminarily scrapes the coupling agent at the bottom of the detection probe 102 to reduce the cleaning burden of the wiping cloth 321. Then the detection probe 102 is reset so that the detection probe 102 presses on the surface of the wiping cloth 321. By rotating the winding shaft 320 in the same direction, the wiping cloth 321 wipes the bottom of the detection probe 102 and the area of the detection pipeline coated with the coupling agent to reduce the influence of the residual coupling agent on the detection probe 102;

[0057] By selectively pressing the coupling agent syringe 409, the coupling agent stored inside the coupling agent syringe 409 is evenly coated on the corresponding pressing area of the detection probe 102 through the nozzle 411, so that the detection probe 102 has a small error from the original position after the coupling agent is replaced, so that the shooting angle between the two detection probes 102 is within the error range, thereby ensuring the signal strength of the ultrasonic wave. The multiple coupling agent syringes 409 provided enable the device to automatically replace the coupling agent multiple times, so as to reduce manual maintenance.

[0058] A fixing frame 304 is arranged between the two guide plates 312. The detection probe 102 is fixedly connected inside the fixing frame 304. First adjustment boxes 305 are symmetrically arranged on both sides of the fixing frame 304. First connecting rods 309 are symmetrically and fixedly connected to the surfaces of the first adjustment boxes 305. A first restraint rod 308 is slidably connected in a first circular groove formed on the surface of the first connecting rod 309. The first restraint rods 308 are fixedly connected to the upper housing 301. First guide blocks 310 are fixedly connected to the surfaces of the first adjustment boxes 305. The two first guide blocks 310 are respectively located in corresponding first guide grooves 601. Two check plates 315 are arranged in the first guide grooves 601. The check plates 315 are rotatably connected in corresponding receiving grooves formed inside the first guide grooves 601 through two third bearings. A torsion spring 316 is arranged on the surface of the check plate 315. The two ends of the torsion spring 316 are respectively fixedly connected to the check plate 315 and the guide plate 312.

[0059] An L-shaped slider 306 is slidably connected inside the first adjustment box 305. The L-shaped slider 306 is fixedly connected to the fixing frame 304. A number of compression springs 307 are evenly arranged inside the first adjustment box 305. The two ends of the compression springs 307 are respectively fixedly connected to the first adjustment box 305 and the L-shaped slider 306.

[0060] In the embodiment of the present invention, the detection probe 102 fixed inside the fixing frame 304 is restricted by the first connecting rod 309 and the first restraint rod 308 so that the detection probe 102 can only move along the radial direction of the pipeline, so as to reduce the position deviation of the detection probe 102 during the process of replacing the coupling agent;

[0061] When the first adjustment box 305 slides along the surface of the first restraint rod 308 towards the detection pipeline through the first connecting rod 309 until the bottom of the detection probe 102 abuts against the detection pipeline, if the first adjustment box 305 continues to move, the compression spring 307 will be compressed, that is, the abutting force of the detection probe 102 against the detection pipeline is positively correlated with the elastic potential energy of the L-shaped slider 306, so as to reduce the damage caused by the excessive abutting force between the detection probe 102 and the detection pipeline;

[0062] The check plate 315 and the torsion spring 316 are arranged such that the first guide block 310 can only move along the fixed path inside the first guide groove 601. That is, when the first guide block 310 moves along the fixed path, after contacting the check plate 315 and continuing to move, it will cause the check plate 315 to overcome the elastic potential energy of the torsion spring 316, causing the check plate 315 to rotate, avoiding the check plate 315 from hindering the movement of the first guide block 310. When the guide plate 312 moves for resetting, when the first guide block 310 has a tendency to deviate from the fixed path in the first guide groove 601, the check plate 315 abuts against the inner wall of the receiving groove, causing the check plate 315 to obstruct the first guide block 310, thereby enabling the first guide block 310 to maintain its movement along the fixed path.

[0063] A first connecting block 313 is fixedly connected between the two guide plates 312. A second lead screw 314 is threadedly connected to the first threaded hole formed on the surface of the first connecting block 313. The second lead screw 314 is rotatably connected to the upper housing 301 through two bearing seats. An arc-shaped scraper 318 is arranged inside the upper housing 301. A second connecting block 317 is fixedly connected to the surface of the arc-shaped scraper 318 far from the adjusting rectangular rod 201. The second connecting block 317 is slidably connected to the upper housing 301 through a second chute formed on the surface of the upper housing 301. The second connecting block 317 is fixedly connected to the first connecting block 313. Six-sided prism rods 319 are symmetrically arranged inside the upper housing 301. The six-sided prism rods 319 are rotatably connected to the corresponding first through grooves formed on the surface of the upper housing 301 through two first bearings. A winding shaft 320 is rotatably connected to the corresponding second through grooves formed on the surfaces of the two arc-shaped scrapers 318 through two second bearings. The winding shaft 320 is slidably connected to the corresponding six-sided prism rod 319 through a corresponding third chute formed on its surface. Flow guiding strips 322 are symmetrically fixedly connected to the surface of the arc-shaped scraper 318 close to the adjusting rectangular rod 201.

[0064] In the embodiment of the present invention, during the process of the first adjusting box 305 moving along the surface of the first restraint rod 308 through the first connecting rod 309, the guide plate 312, through the cooperation of the first guide groove 601 and the first guide block 310, restricts the movement of the first adjusting box 305 by the first guide groove 601, thereby controlling the movement of the detection probe 102.

[0065] When the second lead screw 314 rotates, it will drive the first connecting block 313 to move along the axial direction of the detection pipeline on the surface of the second lead screw 314. The movement of the first connecting block 313 will simultaneously drive the two guide plates 312 to move on the surface of the corresponding U-shaped rod 311, thereby causing the first guide block 310 to move under the restraint of the first guide groove 601.

[0066] The movement of the first connecting block 313 drives the arc-shaped scraping plate 318 to move axially along the detection pipeline inside the upper housing 301 through the second connecting block 317, so that the arc-shaped scraping plate 318 close to the bottom of the detection probe 102 initially scrapes the old coupling agent at the bottom of the detection probe 102. As the arc-shaped scraping plate 318 continues to move towards the adjusting rectangular rod 201, the wiping cloth 321 moves under the corresponding detection probe 102, and the detection probe 102 drops and presses on the upper surface of the wiping cloth 321. By rotating the two rolling shafts 320 in the same direction, the wiping cloth 321 wipes the surface of the detection pipeline and the bottom of the detection probe 102 at the same time to further clean the old coupling agent. The function of the guide strip 322 is that the old coupling agent scraped by the arc-shaped scraping plate 318 moves downward along the detection pipeline under the constraint of the guide strip 322, reducing the area where the old coupling agent adheres to the surface of the detection pipeline, so as to reduce the cleaning burden on the old coupling agent accumulated during the process of repeatedly replacing the coupling agent by the wiping cloth 321;

[0067] When the detection probe 102 is located above the detection pipeline, when the guide strip 322 follows the arc-shaped scraping plate 318 to scrape the bottom of the corresponding detection probe 102, the old coupling agent will slide towards the rolling shaft 320 along the surface of the guide strip 322. When the detection probe 102 is located below the detection pipeline, when the guide strip 322 follows the arc-shaped scraping plate 318 to scrape the bottom of the corresponding detection probe 102, the old coupling agent falls on the inner wall of the upper housing 301 under the guidance of the surface of the guide strip 322 parallel to the radial direction of the detection pipeline under the influence of gravity, or flows out of the inside of the upper housing 301 between the two semi-circular housings of the upper housing 301;

[0068] After the wiping action of the wiping cloth 321 ends, the guide plate 312 is reset. Under the constraint of the first guide groove 601, the corresponding detection probe 102 moves radially away from the wiping cloth 321 along the detection pipeline, so that the arc-shaped scraping plate 318 moves following the reset movement of the guide plate 312.

[0069] The second adjustment box 401 is fixedly connected in the first installation groove formed on the surface of the upper housing 301. Inside the second adjustment box 401, second rectangular blocks 403 are symmetrically arranged. Second restraint rods 404 are slidably connected in a number of third through grooves formed on the surfaces of the second rectangular blocks 403. The second restraint rods 404 are fixedly connected to the second adjustment box 401. A number of third restraint rods 405 are fixedly connected between the second rectangular blocks 403. The third restraint rods 405 are respectively slidably connected to the pressing block 402 through corresponding fourth through grooves formed on the surface of the pressing block 402. The pressing block 402 is inserted into the corresponding two second guiding grooves 602. A first motor 407 is installed on the surface of the second adjustment box 401. The output shaft of the first motor 407 extends into the second adjustment box 401 through a fifth through groove formed on the surface of the second adjustment box 401. The end of the output shaft of the first motor 407 is fixedly connected to a third lead screw 406. The third lead screw 406 is rotatably connected in a sixth through groove formed on the surface of the corresponding second rectangular block 403 through a fourth bearing. A spring cord 408 is fixedly connected to the surface of the pressing block 402. One end of the spring cord 408 away from the pressing block 402 is fixedly connected to one of the second rectangular blocks 403.

[0070] Coupling agent syringes 409 are equidistantly arranged below the pressing block 402. The coupling agent syringes 409 are fixedly connected to the inner wall of the second adjustment box 401 through brackets. An electric push rod 410 is installed on the inner wall of the upper housing 301. A spray head 411 is arranged at the end of the output shaft of the electric push rod 410. The output shaft of the electric push rod 410 is fixedly connected to the adjacent coupling agent syringe 409. Adjacent coupling agent syringes 409 are fixedly connected. The bottom surface of the coupling agent syringe 409 abuts against the surface of the detection pipeline. The spray head 411 is connected to the inside of the corresponding coupling agent syringe 409 through a hose. A rectifying plate 412 is fixedly connected inside the spray head 411.

[0071] In the embodiment of the present invention, when the old coupling agent at the bottom of the detection probe 102 and the old coupling agent in the corresponding area on the surface of the detection pipeline are cleaned to an appropriate degree, by controlling the coupling agent syringe 409 to extend towards the corresponding detection probe 102, so that one of the spray heads 411 moves along the surface of the detection pipeline to a set position, and then by moving the pressing block 402 towards the corresponding coupling agent syringe 409 until the pressing block 402 drives the piston rod of the coupling agent syringe 409 to move in the direction of squeezing the coupling agent inside the coupling agent syringe 409, so that the coupling agent inside the coupling agent syringe 409 is evenly squeezed onto the corresponding area on the surface of the detection pipeline through the spray head 411, and then making the detection probe 102 move along the radial direction of the detection pipeline towards the direction close to the detection pipeline until the detection probe 102 presses against the area on the detection pipeline coated with the new coupling agent. During this process, the change amount of the position of the detection probe 102 compared with the position before replacing the coupling agent is within the error range;

[0072] During the process of replacing the coupling agent multiple times, the pressing block 402 is located above the coupling agent syringe 409 closest to the detection probe 102 inside the second adjustment box 401. The spring cord 408 on the surface of the pressing block 402 is fixed to the second rectangular block 403 that is farthest from the corresponding detection probe 102. The third lead screw 406 is rotated by the first motor 407, so that the second rectangular block 403 moves on the surface of the second constraint rod 404 towards the direction close to the detection pipeline. Furthermore, the two second rectangular blocks 403 drive the pressing block 402 to move towards the direction of squeezing the coupling agent syringe 409 through the third constraint rod 405. When the pressing block 402 moves to the point closest to the detection pipeline, under the action of the elastic potential energy of the spring cord 408, the pressing block 402 moves on the surface of the third constraint rod 405 towards the adjacent coupling agent syringe 409 under the constraint of the second guide groove 602 until it moves above the adjacent coupling agent syringe 409, thus facilitating the next coupling agent coating operation;

[0073] The coupling agent inside the coupling agent syringe 409 is pressed by the pressing block 402, enters the hose from the bottom nozzle of the coupling agent syringe 409, enters the corresponding nozzle 411 from the hose, and is evenly coated on the corresponding area of the surface of the detection pipeline under the combing of the rectifying plate 412;

[0074] During the process of the coupling agent being coated on the surface of the detection pipeline from the bottom through slot of the nozzle 411, the electric push rod 410 is evenly contracted to facilitate the coupling agent flowing out from the bottom of the nozzle 411 to be evenly coated on the corresponding area of the surface of the detection pipeline.

[0075] A dual-axis motor 501 is installed on the surface of the adjusting rectangular rod 201. Gear boxes 502 are symmetrically arranged on both sides of the dual-axis motor 501. The gear boxes 502 are fixedly connected to the adjusting rectangular rod 201. A first incomplete gear 503 is rotatably connected to the inside of the gear box 502 through a fifth bearing. The output shafts of the dual-axis motor 501 are respectively fixedly connected to the corresponding first incomplete gears 503. A second incomplete gear 505 is rotatably connected to the surface of the first incomplete gear 503 through a first one-way bearing. The surface of the second incomplete gear 505 abuts against the inner wall of the gear box 502. A first gear 504 is meshed with the surface of the first incomplete gear 503. The rotating shaft of the first gear 504 is rotatably connected in the corresponding seventh through slot opened on the surface of the gear box 502 through a sixth bearing. A second gear 506 is meshed with the surface of the first incomplete gear 503. The rotating shaft of the second gear 506 is rotatably connected in the corresponding eighth through slot opened on the surface of the gear box 502 through a seventh bearing.

[0076] One end of the rotating shaft of the first gear 504 is fixedly connected to a first flexible shaft 507. One end of the first flexible shaft 507 away from the first gear 504 is fixedly connected to the corresponding second lead screw 314. One end of the rotating shaft of the second gear 506 is fixedly connected to a second flexible shaft 508. One end of the second flexible shaft 508 away from the second gear 506 is fixedly connected to one of the corresponding hexagonal prism rods 319.

[0077] In the embodiment of the present invention, during the process of replacing the coupling agent, the dual-axis motor 501 operates to make the first incomplete gears 503 inside the two gear boxes 502 rotate synchronously. The first incomplete gear 503 drives the first gear 504 to rotate through two tooth segments distributed on the surface. When the longer tooth segment drives the first gear 504 to rotate, the first gear 504 drives the second lead screw 314 to rotate through the first flexible shaft 507, so that the first connecting block 313 drives the guide plate 312 to move towards the direction close to the corresponding detection probe 102, making the corresponding detection probe 102 first move away from the detection pipeline, and the arc-shaped scraper 318 initially scrapes the coupling agent at the bottom of the detection probe 102. Then, the detection probe 102 is pressed against the surface of the wiping cloth 321. After the detection probe 102 is pressed against the surface of the wiping cloth 321, the longer tooth segment on the surface of the first incomplete gear 503 separates from the first gear 504. At this time, the second lead screw 314 stops rotating, so that the detection probe 102 is stably pressed against the surface of the wiping cloth 321 for a certain period of time. When the shorter tooth segment on the surface of the first incomplete gear 503 meshes with the first gear 504 for transmission, the detection probe 102 moves away from the detection pipeline, and at this time, the cleaning action of the coupling agent is completed;

[0078] After the longer tooth segment on the surface of the first incomplete gear 503 separates from the first gear 504, the teeth on the surface of the second incomplete gear 505 mesh with the second gear 506 for transmission. The rotation of the second gear 506 drives one of the hexagonal prism rods 319 to rotate through the second flexible shaft 508. The rotation of the hexagonal prism rod 319 makes the winding shaft 320 wind the wiping cloth 321 in one direction. During the winding process of the wiping cloth 321, the wiping cloth 321 drives the other winding shaft 320 to rotate synchronously, so as to complete the action of the wiping cloth 321 cleaning the old coupling agent on the detection probe 102 and the detection pipeline;

[0079] When the first incomplete gear 503 rotates in the reverse direction, the first incomplete gear 503 drives the guide plate 312 to reset through the transmission of the first gear 504 and the first flexible shaft 507. The detection probe 102 remains in the position away from the detection pipeline to avoid interfering with the reset action of the arc-shaped scraper 318. When the guide plate 312 resets to a position close to the initial position, under the constraint of the inclined section of the first guide groove 601, the detection probe 102 moves towards the direction close to the detection pipeline until the detection probe 102 abuts against the same position on the surface of the detection pipeline;

[0080] Under the combined action of the frictional force generated when the second incomplete gear 505 abuts against the inner wall of the gear box 502 and the first one-way bearing, the reverse rotation of the first incomplete gear 503 no longer drives the second incomplete gear 505 to rotate. The second incomplete gear 505 remains relatively stationary with respect to the gear box 502, that is, the hexagonal prism rod 319 and the winding shaft 320 no longer rotate, and the wiping cloth 321 no longer performs the wiping action;

[0081] During the reset process of the arc-shaped scraper 318, when the arc-shaped scraper 318 near the adjusting rectangular rod 201 leaves the area where the detection pipeline is coated with the coupling agent, the electric push rod 410 drives the nozzle 411 to move to the corresponding coating area to start coating the coupling agent. The process of coating the coupling agent is carried out while the guide plate 312 is reset and the detection probe 102 moves in the direction close to the detection pipeline under the constraint of the inclined section of the first guide groove 601.

[0082] One end of the rotating shaft of the first gear 504 is fixedly connected with a first flexible shaft 507, and the end of the first flexible shaft 507 far from the first gear 504 is fixedly connected with the corresponding second lead screw 314. One end of the rotating shaft of the second gear 506 is fixedly connected with a second flexible shaft 508, and the end of the second flexible shaft 508 far from the second gear 506 is fixedly connected with one of the corresponding hexagonal prism rods 319.

[0083] It should be noted that: the detection host 101 and the detection probe 102 are electrically connected through a cable (not shown in the figure). The working principles and usage procedures of the detection host 101 and the detection probe 102 are well known in the prior art and will not be elaborated here;

[0084] In this application, it is fixed by bolts, specifically by screwing the bolts into the preset corresponding threaded grooves. This is well known in the prior art and will not be described in detail here;

[0085] In this application, it is connected through a hose, specifically by fixing the two ends of the pipeline in the preset through openings. This is well known in the prior art and will not be described in detail here;

[0086] The upper shell 301 is composed of two non-touching semi-circular shells, and the two semi-circular shells are fixedly connected by two U-shaped rods 311;

[0087] The cross-sectional shape of the first sliding groove formed on the surface of the adjusting rectangular rod 201 is cross-shaped, so that the corresponding adjusting slider 202 can only move along the axial direction of the adjusting rectangular rod 201;

[0088] A sealing film is blocked at the bottom nozzle and the top nozzle of the couplant syringe 409, so as to extend the storage time of the couplant inside the couplant syringe 409. When the piston rod of the couplant syringe 409 squeezes the couplant inside the couplant syringe 409, the sealing film at the top nozzle is torn by the movement of the piston rod, and the transparent film at the bottom nozzle is broken by the relatively large positive pressure inside the couplant syringe 409, so that the couplant inside the couplant syringe 409 enters the nozzle 411.

[0089] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An ultrasonic flowmeter for flow detection, comprising a detection pipeline and a detection host, wherein detection probes are arranged on both sides of the detection host, and it is characterized in that, Including: There are two arc-shaped scraping plates arranged on the surface of the detection pipeline. Between the two arc-shaped scraping plates, there is a wiping cloth and two winding shafts. The wiping cloth is wound around the surfaces of the two winding shafts. When replacing the coupling agent of the detection probe, by moving the detection probe away from the detection pipeline along the radial direction of the detection pipeline, the arc-shaped scraping plates move towards the direction close to the detection probe and initially scrape the coupling agent on the bottom surface of the detection probe. Then, the detection probe drops along the radial direction of the detection pipeline and presses on the upper surface of the wiping cloth. The rotation of the winding shaft drives the wiping cloth to wipe the surface of the detection pipeline and the bottom of the detection probe. A guide plate is used to control the movement track of the detection probe through the first guide groove opened on the surface of the guide plate. On one side of the detection probe, there is a second adjustment box. Inside the second adjustment box, there is a pressing block and several coupling agent syringes. Through the guiding action of the second guide groove opened on the surface of the second adjustment box, the pressing block presses one of the coupling agent syringes and then moves above the adjacent coupling agent syringe. Below the coupling agent syringe, there are several corresponding nozzles, and the nozzles are used to evenly apply the coupling agent on the surface of the detection pipeline.

2. The ultrasonic flowmeter for flow detection according to claim 1, wherein The surface of the detection pipeline is fixedly connected with an adjusting rectangular rod through a hoop. Two adjusting sliders are arranged in the first sliding groove opened on the surface of the adjusting rectangular rod. The adjusting sliders are slidably connected with the adjusting rectangular rod. The bottom surface of the adjusting slider is fixedly connected with an upper shell and a lower shell through a hoop. The detection probe is arranged on the surface of the upper shell. U-shaped rods are symmetrically and fixedly connected to the surface of the upper shell, and the guide plates are respectively slidably connected with the corresponding U-shaped rods.

3. The ultrasonic flowmeter for flow detection according to claim 2, wherein A fixing frame is arranged between the two guide plates. The detection probe is fixedly connected inside the fixing frame. First adjustment boxes are symmetrically arranged on both sides of the fixing frame. First connecting rods are symmetrically and fixedly connected to the surfaces of the first adjustment boxes. First constraint rods are slidably connected in the first circular grooves opened on the surfaces of the first connecting rods, and the first constraint rods are fixedly connected with the upper shell. First guide blocks are fixedly connected to the surfaces of the first adjustment boxes. The two first guide blocks are respectively located in the corresponding first guide grooves. Two check plates are arranged in the first guide grooves. The check plates are rotatably connected in the corresponding accommodation grooves opened inside the first guide grooves through two third bearings. A torsion spring is arranged on the surface of the check plate, and the two ends of the torsion spring are respectively fixedly connected with the check plate and the guide plate.

4. The ultrasonic flowmeter for flow rate detection according to claim 3, characterized in that, An L-shaped slider is slidably connected inside the first adjustment box. The L-shaped slider is fixedly connected with the fixing frame. Several compression springs are evenly arranged inside the first adjustment box. The two ends of the compression spring are respectively fixedly connected with the first adjustment box and the L-shaped slider.

5. The ultrasonic flowmeter for flow detection according to claim 4, characterized in that, A first connecting block is fixedly connected between the two guide plates. A second lead screw is threadedly connected to a first threaded hole formed on the surface of the first connecting block. The second lead screw is rotatably connected to the upper housing through two bearing seats. The arc-shaped scraping plate is arranged inside the upper housing. A second connecting block is fixedly connected to the surface of the arc-shaped scraping plate away from the adjusting rectangular rod. The second connecting block is slidably connected to the upper housing through a second chute formed on the surface of the upper housing. The second connecting block is fixedly connected to the first connecting block. Six-sided prism rods are symmetrically arranged inside the upper housing. The six-sided prism rods are rotatably connected to corresponding first through grooves formed on the surface of the upper housing through two first bearings. The winding shaft is rotatably connected to corresponding second through grooves formed on the surfaces of the two arc-shaped scraping plates through two second bearings. The winding shaft is slidably connected to the corresponding six-sided prism rod through a corresponding third chute formed on the surface. Guide strips are symmetrically fixedly connected to the surface of the arc-shaped scraping plate close to the adjusting rectangular rod.

6. The ultrasonic flowmeter for flow detection according to claim 5, characterized in that, The second adjusting box is fixedly connected to a first installation groove formed on the surface of the upper housing. Second rectangular blocks are symmetrically arranged inside the second adjusting box. A plurality of second restraint rods are slidably connected to a plurality of third through grooves formed on the surfaces of the second rectangular blocks. The second restraint rods are fixedly connected to the second adjusting box. A plurality of third restraint rods are fixedly connected between the second rectangular blocks. The third restraint rods are respectively slidably connected to the pressing block through corresponding fourth through grooves formed on the surface of the pressing block. The pressing block is inserted into corresponding two second guide grooves. A first motor is installed on the surface of the second adjusting box. The output shaft of the first motor extends into the second adjusting box through a fifth through groove formed on the surface of the second adjusting box. A third lead screw is fixedly connected to the end of the output shaft of the first motor. The third lead screw is rotatably connected to a sixth through groove formed on the surface of the corresponding second rectangular block through a fourth bearing. A spring cord is fixedly connected to the surface of the pressing block. One end of the spring cord away from the pressing block is fixedly connected to one of the second rectangular blocks.

7. The ultrasonic flowmeter for flow detection according to claim 6, wherein, The coupling agent syringes are equidistantly arranged below the pressing block. The coupling agent syringes are fixedly connected to the inner wall of the second adjusting box through brackets. An electric push rod is installed on the inner wall of the upper housing. The nozzle is arranged at the end of the output shaft of the electric push rod. The output shaft of the electric push rod is fixedly connected to the adjacent coupling agent syringe. Adjacent two coupling agent syringes are fixedly connected. The bottom surface of the coupling agent syringe abuts against the surface of the detection pipeline. The nozzle is connected to the inside of the corresponding coupling agent syringe through a hose. A rectifying plate is fixedly connected to the inside of the nozzle.

8. The ultrasonic flowmeter for flow detection according to claim 7, wherein A biaxial motor is mounted on the surface of the adjusting rectangular rod. Gear boxes are symmetrically arranged on both sides of the biaxial motor. The gear boxes are fixedly connected to the adjusting rectangular rod. A first incomplete gear is rotatably connected to the inside of the gear box through a fifth bearing. Output shafts of the biaxial motor are respectively fixedly connected to the corresponding first incomplete gears. A second incomplete gear is rotatably connected to the surface of the first incomplete gear through a first one-way bearing. The surface of the second incomplete gear abuts against the inner wall of the gear box. A first gear is meshed with the surface of the first incomplete gear. A rotating shaft of the first gear is rotatably connected in a corresponding seventh through groove formed on the surface of the gear box through a sixth bearing. A second gear is meshed with the surface of the second incomplete gear. A rotating shaft of the second gear is rotatably connected in a corresponding eighth through groove formed on the surface of the gear box through a seventh bearing.

9. The ultrasonic flowmeter for flow detection according to claim 8, wherein, One end of the rotating shaft of the first gear is fixedly connected with a first flexible shaft. The end of the first flexible shaft away from the first gear is fixedly connected to the corresponding second lead screw. One end of the rotating shaft of the second gear is fixedly connected with a second flexible shaft. The end of the second flexible shaft away from the second gear is fixedly connected to one of the corresponding hexagonal prism rods.

10. The ultrasonic flowmeter for flow detection according to claim 2, wherein, Extrusion wedges are symmetrically and slidably connected in a fourth chute formed inside the adjusting slider. Spring rods are fixedly connected to the surfaces of the extrusion wedges. The ends of the spring rods away from the extrusion wedges are fixedly connected to the inner wall of the adjusting slider. A second extrusion block is arranged between the two extrusion wedges. The second extrusion block is slidably connected to the adjusting slider. An adjusting threaded rod is threadedly connected in a second threaded hole formed on the surface of the second extrusion block. The adjusting threaded rod is rotatably connected to the adjusting slider through an eighth bearing at a position near the bottom end of the surface of the adjusting threaded rod.

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