Pipeline flow monitoring device for preventing icing

Abstract

The invention belongs to the technical field of building water supply, and particularly relates to an anti-icing pipeline flow monitoring device which comprises a mounting lantern ring, an inserting ring is rotatably mounted in the mounting lantern ring, the mounting lantern ring is arranged on a water supply network in a sleeving mode, one end of the inserting ring is rotated into the mounting lantern ring, and mounting is completed. A monitoring assembly is arranged below the mounting lantern ring and used for measuring whether freezing occurs in the water supply pipe network or not through vibration of the water supply pipe network, an arc-shaped guide groove is formed in the top end of the mounting lantern ring, a guide rod is arranged at the top end of the inserting ring, one end of the guide rod extends into the arc-shaped guide groove, and a reset spring is arranged in the arc-shaped guide groove. And a locking assembly is arranged on the mounting lantern ring and used for locking the inserting ring entering the mounting lantern ring, and through cooperative use of the structures, the problem that monitoring is inconvenient due to the fact that pipelines are externally arranged in the old school district is effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of building water supply monitoring, in particular to a pipeline flow monitoring device for preventing freezing. Background Art

[0002] Many old communities in southern cities still use external pipes for water supply. However, with the continuous changes in the climate environment in recent years, low temperatures often occur in winter, and external water supply pipes face the risk of freezing and cracking.

[0003] However, in order to solve the problem of freezing of water supply pipes, we only need to pay attention to those external pipes with old insulation layers. Especially with the frequent cold weather in recent times, this problem is particularly prominent in the winter months with lower temperatures, so special monitoring is required. Other time periods do not require continuous monitoring throughout the year. Based on this demand, we proposed an emergency freezing monitoring device specifically for community water supply pipes. The main function of this device is to solve the monitoring and early warning of pipe freezing in winter and ensure the safe and stable operation of the water supply system. Through this device, we can promptly detect potential freezing risks and take corresponding preventive measures to avoid water supply interruptions or other related problems caused by pipe freezing.

[0004] To this end, the present invention provides a pipeline flow monitoring device for preventing icing. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the pipeline flow monitoring device for preventing freezing of the present invention comprises a mounting collar arranged on a water supply network, a plug-in ring is rotatably installed inside the mounting collar, the mounting collar is sleeved on the water supply network, one end of the plug-in ring is rotated to the inside of the mounting collar, and the installation is completed;

[0007] A monitoring component is provided below the mounting collar, which is used to measure whether ice is formed in the water supply network through the vibration of the water supply network;

[0008] An arc-shaped guide groove is provided at the top of the mounting ring, a guide rod is provided at the top of the plug-in ring, one end of the guide rod extends to the inside of the arc-shaped guide groove, and a return spring is provided inside the arc-shaped guide groove;

[0009] A locking assembly is provided on the installation collar for locking the plug-in ring entering the installation collar.

[0010] The monitoring assembly includes a monitoring box, a laser source, a vibration probe, a reflective layer, a reflective platform and a CMOS sensor. The monitoring box is fixedly installed at the bottom of the mounting ring, the reflective platform is fixedly installed inside the monitoring box, one end of the vibration probe extends out of the monitoring box, and the other end is fixedly connected to the reflective platform, the reflective layer is fixedly installed at one end of the monitoring box away from the vibration probe, and the CMOS sensor is arranged inside the monitoring box.

[0011] The locking assembly comprises a ratchet and a ratchet rod, wherein the ratchet is fixedly mounted on the outer wall of the plug-in ring, and the ratchet rod is elastically mounted inside the mounting collar to prevent the ratchet from rotating.

[0012] A rotating rod is fixedly installed on the top of the ratchet rod, one end of the rotating rod extends out of the top of the mounting collar, a torsion spring is fixedly connected to the outer wall of the rotating rod, and the other end of the torsion spring is fixedly connected to the inside of the mounting collar.

[0013] A push rod is elastically installed inside the plug ring, a sliding groove is opened inside the plug ring, and an arc-shaped push block for pushing the push rod is slidably installed in the sliding groove. Multiple push rods and arc-shaped push blocks are provided.

[0014] A control ring is fixedly installed on the top of multiple arc-shaped top blocks, a tooth block is fixedly installed on the inner wall of the control ring, one end of the guide rod extends to the inside of the plug-in ring and is rotatably connected to the plug-in ring, and a transmission gear is fixedly installed on the outer wall of the guide rod, which meshes with the tooth block.

[0015] A placement block is slidably installed on the top of the installation ring, one end of the guide rod extends to the inside of the placement block and is fixedly installed with a worm wheel, a worm engaged with the worm wheel is rotatably installed inside the placement block, and one end of the worm extends out of the outer wall of the placement block.

[0016] A first fixed tube is fixedly installed on the inner wall of the monitoring box, one end of the laser source extends into the interior of the first fixed tube and is fixedly installed with a first ball joint;

[0017] A second fixed cylinder is fixedly installed on the outer wall of the monitoring box, a second ball joint is rotatably installed inside the second fixed cylinder, and an operating rod is fixedly installed on the other end of the second ball joint;

[0018] The outer wall of the laser source is connected to the operating rod through a plurality of operating ropes, an operating ring is arranged inside the monitoring box, and the plurality of operating ropes all penetrate the operating ring.

[0019] The second fixing tube is composed of four elastic arc plates, the outer walls of the four elastic arc plates are all provided with thread grooves, and the outer wall of the second fixing tube is connected with a fastening ring through threads.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention discloses a pipeline flow monitoring device for preventing icing, which releases the obstruction of the ratchet rod to the ratchet teeth by rotating the rotating rod, and then the reset spring releases the elastic potential energy, driving the guide rod to slide to the rightmost side in the arc guide groove. At this time, the plug-in ring is installed with the installation ring, and the guide rod is controlled to rotate, so that the transmission gear drives the tooth block to rotate, and the control ring rotates counterclockwise, driving multiple arc-shaped top blocks to push multiple top rods, so that the multiple top rods press and clamp the water supply network. At this time, the vibration probe on the monitoring box penetrates the insulation layer and contacts the water supply network to complete the icing monitoring, which effectively solves the problem that the external pipelines in the old campus are inconvenient to monitor.

[0022] 2. The pipeline flow monitoring device for preventing icing described in the present invention penetrates the insulation layer and contacts the water supply network through a vibration probe, and then adjusts the position of the laser source to irradiate the light source on the reflective layer. Then, with the help of a reflective platform, the light source is refracted onto the CMOS sensor to measure the vibration amplitude curve of the water supply network throughout the day, thereby monitoring whether there is ice in the water supply network. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a stereogram in the present invention;

[0025] Figure 2 It is a schematic diagram of the installation of the plug-in ring in the present invention;

[0026] Figure 3 It is a structural schematic diagram of the ejector rod in the present invention;

[0027] Figure 4 is a cross-sectional view of the monitoring box of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the first fixed cylinder in the present invention.

[0029] In the figure: 1. water supply network; 2. insulation layer; 3. installation ring; 4. plug-in ring; 5. monitoring box; 6. vibration probe; 7. ratchet; 8. placement block; 9. worm; 10. worm wheel; 11. rotating rod; 12. arc guide groove; 13. reset spring; 14. guide rod; 15. transmission gear; 16. gear block; 17. control ring; 18. arc top block; 19. sliding groove; 20. top rod; 21. reflective layer; 22. reflective platform; 23. CMOS sensor; 24. laser source; 25. first ball joint; 26. first fixed cylinder; 27. operating ring; 28. operating rod; 29. ​​second ball joint; 30. fastening ring; 31. operating rope; 32. second fixed cylinder; 33. ratchet rod. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 5 As shown, a pipeline flow monitoring device for preventing freezing described in an embodiment of the present invention includes a mounting ring 3 arranged on a water supply network 1; an insulation layer 2 can be arranged on the surface of the water supply network 1, and the insulation layer 2 can be tied with a common cable tie. Protective wings can be arranged on the insulation layer 2 to prevent the insulation layer 2 from being broken when the cable tie is used to tie the insulation layer 2.

[0032] The plug ring 4 is rotatably installed inside the installation ring 3, the installation ring 3 is sleeved on the water supply network 1, and one end of the plug ring 4 is rotated to the inside of the installation ring 3 to complete the installation;

[0033] The plug-in ring 4 can be rotated to the inside of the installation ring 3 for storage. When it needs to be installed on the water supply network 1, the plug-in ring 4 only needs to be rotated out from the inside of the installation ring 3 and one end of the plug-in ring 4 can be rotated into the other end of the installation ring 3 to complete the installation.

[0034] A monitoring component is provided below the mounting collar 3, which is used to measure whether ice is formed in the water supply network 1 through the vibration of the water supply network 1;

[0035] Since the water body exerts great impact and shear force on the inner wall of the water supply network 1 in a turbulent state, the water supply network 1 may vibrate, especially when there are elbows, valves or other obstacles in the water supply network 1, the turbulent flow may produce additional fluid dynamic effects.

[0036] The Reynolds number (Re) is a dimensionless number defined as the ratio of the fluid inertia force to the viscous force, and is calculated as:

[0037] Re = ρ·v·D / μ;

[0038] in:

[0039] ρ is the density of the fluid (unit: kilograms per cubic meter, kg / m 3 );

[0040] v is the characteristic velocity of the fluid (meters per second, m / s);

[0041] D is the characteristic length, which is usually a geometric dimension related to the flow direction, such as the pipe diameter (unit: meter, m);

[0042] μ is the dynamic viscosity of the fluid (unit: Pa·s);

[0043] In turbulent flow, the fluid will produce periodic vortex shedding at certain parts of the pipeline. The frequency of these vortex shedding (also known as the Strouhal number, St), the Strouhal number usually remains constant within a certain range, and its relationship can be expressed as:

[0044] St=f·D / v

[0045] in:

[0046] f is the frequency of vortex shedding (unit: Hertz, Hz);

[0047] D is the characteristic length such as the pipe diameter (unit: meter, m);

[0048] v is the average flow velocity of the fluid (unit: meters per second, m / s);

[0049] In non-freezing conditions:

[0050] Knowing the pipe diameter and the current flow rate in the pipe (obtained from the water meter), Re and St can be quantitatively calculated.

[0051] In non-freezing conditions:

[0052] Re=ρ·v·D / μ

[0053] St=f·D / v

[0054] Based on the fact that the Re and St of the pipe network remain unchanged under a specific flow state, further, through the conversion relationship, the above equations can be combined to obtain:

[0055] D=(Re·St·μ / (f·ρ·v)) 0.5

[0056] v=(Re·μ·f / (St·ρ)) 0.5

[0057] Therefore, there is a certain correlation between the vibration intensity f and the average flow velocity v of the fluid and the pipe diameter D. When the pipe cross-section is reduced after freezing, it is possible to infer whether the pipe is frozen by monitoring the change in vibration intensity.

[0058] It is deployed before ice forms and the vibration amplitude curve for the whole day is measured. If ice forms later, the pipeline amplitude will increase compared with the amplitude in the same previous time period (hourly), and an alarm will be sounded during the rising stage.

[0059] By setting up a monitoring component, when the water supply network 1 is draining, it is possible to determine whether there is ice in the water supply network 1 by monitoring the vibration caused by the water body colliding with the inner wall of the water supply network 1, and cooperate with the information transmission device while personnel carry out emergency treatment.

[0060] An arc-shaped guide groove 12 is provided at the top of the mounting ring 3, a guide rod 14 is provided at the top of the plug-in ring 4, one end of the guide rod 14 extends to the inside of the arc-shaped guide groove 12, and a return spring 13 is provided inside the arc-shaped guide groove 12;

[0061] When the plug-in ring 4 is completely located inside the mounting collar 3, the guide rod 14 will be located at the leftmost side of the arc guide groove 12, and press the return spring 13 to shrink and store elastic potential energy. When the guide rod 14 slides to the rightmost side, the plug-in ring 4 will be installed with the mounting collar 3.

[0062] The mounting collar 3 is provided with a locking assembly for locking the plug-in ring 4 entering the mounting collar 3 .

[0063] When the plug-in ring 4 and the installation sleeve ring 3 are installed, the plug-in ring 4 can be locked by the provided locking assembly to ensure the stability of the installation.

[0064] As a preferred embodiment of the present invention, the monitoring component includes a monitoring box 5, a laser source 24, a vibration probe 6, a reflective layer 21, a reflective platform 22 and a CMOS sensor 23. The monitoring box 5 is fixedly mounted on the bottom end of the mounting ring 3, the reflective platform 22 is fixedly mounted inside the monitoring box 5, one end of the vibration probe 6 extends out of the monitoring box 5, and the other end is fixedly connected to the reflective platform 22, the reflective layer 21 is fixedly mounted on one end of the monitoring box 5 away from the vibration probe 6, and the CMOS sensor 23 is arranged inside the monitoring box 5.

[0065] When the mounting ring 3 is installed on the water supply network 1, the vibration probe 6 is passed through the insulation layer 2 to contact the water supply network 1, and then the position of the laser source 24 is adjusted to irradiate the light source on the reflective layer 21, and then cooperate with the reflective platform 22 to refract the light source onto the CMOS sensor 23 to monitor the vibration of the water supply network 1. Therefore, it is possible to monitor whether there is ice in the water supply network 1.

[0066] As a preferred embodiment of the present invention, the locking assembly includes a ratchet 7 and a ratchet rod 33 . The ratchet 7 is fixedly mounted on the outer wall of the plug-in ring 4 , and the ratchet rod 33 is elastically mounted inside the mounting collar 3 to prevent the ratchet 7 from rotating.

[0067] The ratchet rod 33 can be used to block the counterclockwise rotation of the ratchet 7. When the ratchet 7 is installed and plugged into the mounting collar 3, the ratchet rod 33 blocks the ratchet 7, thereby effectively blocking the rotation of the plug-in ring 4.

[0068] As a preferred embodiment of the present invention, a rotating rod 11 is fixedly installed on the top of the ratchet rod 33, one end of the rotating rod 11 extends out of the top of the mounting ring 3, the outer wall of the rotating rod 11 is fixedly connected with a torsion spring, and the other end of the torsion spring is fixedly connected to the inside of the mounting ring 3.

[0069] As a preferred embodiment of the present invention, a push rod 20 is elastically installed inside the plug-in ring 4, a sliding groove 19 is opened inside the plug-in ring 4, and an arc-shaped push block 18 is slidably installed in the sliding groove 19 for pushing the push rod 20. Both the push rod 20 and the arc-shaped push block 18 are provided in plurality.

[0070] When the mounting ring 3 is installed on the water supply network 1, the multiple arc-shaped top blocks 18 can be controlled to slide toward the top rod 20, and the top rod 20 can be pressed toward the water supply network 1, so that water supply networks 1 with different pipe diameters can be installed.

[0071] As a preferred embodiment of the present invention, a control ring 17 is fixedly installed on the top of the multiple arc-shaped top blocks 18, a tooth block 16 is fixedly installed on the inner wall of the control ring 17, one end of the guide rod 14 extends to the interior of the plug-in ring 4 and is rotatably connected to the plug-in ring 4, and a transmission gear 15 is fixedly installed on the outer wall of the guide rod 14, and the transmission gear 15 is meshed with the tooth block 16.

[0072] By controlling the guide rod 14 to rotate, the control ring 17 can be driven to rotate with the cooperation of the tooth block 16 and the transmission gear 15. When the control ring 17 rotates counterclockwise, it will drive the multiple arc-shaped top blocks 18 to push the multiple top rods 20, so that the multiple top rods 20 press and clamp the water supply network 1. When the control ring 17 rotates clockwise, the multiple arc-shaped top blocks 18 will release the pressure on the multiple top rods 20. At this time, the multiple top rods 20 will be reset under the action of the reset spring 13, and the pressure on the water supply network 1 will be released.

[0073] As a preferred embodiment of the present invention, a mounting block 8 is slidably installed on the top of the mounting ring 3, one end of the guide rod 14 extends to the interior of the mounting block 8 and is fixedly installed with a worm gear 10, and a worm 9 meshing with the worm gear 10 is rotatably installed inside the mounting block 8, and one end of the worm 9 extends out of the outer wall of the mounting block 8.

[0074] By rotating the worm 9 to drive the worm wheel 10 to rotate, the worm wheel 10 will drive the guide rod 14 to rotate. Therefore, by rotating the worm 9, the push of the arc-shaped top block 18 on the top rod 20 can be controlled. Moreover, through the one-way locking characteristics of the worm wheel 10 and the worm 9, the top pressure effect of the top rod 20 on the water supply network 1 can be further guaranteed.

[0075] As a preferred embodiment of the present invention, a first fixed cylinder 26 is fixedly installed on the inner wall of the monitoring box 5, one end of the laser source 24 extends to the interior of the first fixed cylinder 26 and is fixedly installed with a first ball joint 25, a second fixed cylinder 32 is fixedly installed on the outer wall of the monitoring box 5, a second ball joint 29 is rotatably installed inside the second fixed cylinder 32, an operating rod 28 is fixedly installed on the other end of the second ball joint 29, the outer wall of the laser source 24 is connected to the operating rod 28 through a plurality of operating ropes 31, an operating ring 27 is arranged inside the monitoring box 5, and a plurality of operating ropes 31 all pass through the operating ring 27.

[0076] When the laser source 24 rotates, it drives the first ball joint 25 to rotate in the first fixing tube 26. Through the arrangement of the first ball joint 25, the laser source 24 can increase the rotation adjustment angle.

[0077] When the operating rod 28 rotates, the second ball joint 29 is driven to rotate inside the second fixed tube 32. Through the cooperation of multiple operating ropes 31, when the operating rod 28 swings upward, the laser source 24 can be controlled to swing downward.

[0078] As a preferred embodiment of the present invention, the second fixing tube 32 is composed of four elastic arc plates, the outer walls of the four elastic arc plates are all provided with thread grooves, and the outer wall of the second fixing tube 32 is connected to the fastening ring 30 through threads.

[0079] After adjusting the angle of the laser source 24 by the operating rod 28 , the four elastic arc plates can be fastened by rotating the fastening ring 30 under the action of the threaded groove, and the second ball joint 29 can be locked at the same time, so as to adjust the angle of the laser source 24 .

[0080] Working principle: By rotating the rotating rod 11, the obstruction of the ratchet rod 33 to the ratchet tooth 7 is released, and then the reset spring 13 releases the elastic potential energy, driving the guide rod 14 to slide to the rightmost side in the arc guide groove 12. At this time, the plug-in ring 4 will be installed with the installation ring 3, and the guide rod 14 is controlled to rotate, so that the transmission gear 15 drives the tooth block 16 to rotate, and the control ring 17 rotates counterclockwise, driving multiple arc-shaped top blocks 18 to push multiple top rods 20, so that multiple top rods 20 press and clamp the water supply network 1. At this time, the vibration probe 6 on the monitoring box 5 penetrates the insulation layer 2 and contacts the water supply network 1, and the installation of the monitoring box 5 is completed.

[0081] When the mounting ring 3 is installed on the water supply network 1, the vibration probe 6 is passed through the insulation layer 2 to contact the water supply network 1, and then the position of the laser source 24 is adjusted to irradiate the light source on the reflective layer 21. Then, in conjunction with the reflective platform 22, the light source is refracted onto the CMOS sensor 23 to measure the vibration amplitude curve of the water supply network 1 throughout the day, thereby monitoring whether ice is formed in the water supply network 1.

[0082] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0084] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pipeline flow monitoring device for preventing icing, characterized in that: It comprises a mounting collar (3) arranged on a water supply pipe network (1), a plug-in ring (4) being rotatably mounted inside the mounting collar (3), the mounting collar (3) being sleeved on the water supply pipe network (1), and one end of the plug-in ring (4) being rotated into the interior of the mounting collar (3), thereby completing the installation; A monitoring component is arranged below the mounting collar (3) and is used to measure whether ice is formed in the water supply network (1) through the vibration of the water supply network (1); The top of the mounting ring (3) is provided with an arc-shaped guide groove (12), the top of the plug-in ring (4) is provided with a guide rod (14), one end of the guide rod (14) extends to the inside of the arc-shaped guide groove (12), and a return spring (13) is provided inside the arc-shaped guide groove (12); The installation collar (3) is provided with a locking assembly for locking the plug-in ring (4) entering the installation collar (3).

2. A pipeline flow monitoring device for preventing icing according to claim 1, characterized in that: The monitoring assembly comprises a monitoring box (5), a laser source (24), a vibration probe (6), a reflective layer (21), a reflective platform (22) and a CMOS sensor (23); the monitoring box (5) is fixedly mounted on the bottom end of the mounting collar (3); the reflective platform (22) is fixedly mounted inside the monitoring box (5); one end of the vibration probe (6) extends out of the monitoring box (5) and the other end is fixedly connected to the reflective platform (22); the reflective layer (21) is fixedly mounted on one end of the monitoring box (5) away from the vibration probe (6); and the CMOS sensor (23) is arranged inside the monitoring box (5).

3. A pipeline flow monitoring device for preventing icing according to claim 2, characterized in that: The locking assembly comprises a ratchet (7) and a ratchet rod (33), wherein the ratchet (7) is fixedly mounted on the outer wall of the plug-in ring (4), and the ratchet rod (33) is elastically mounted inside the mounting collar (3) to prevent the ratchet (7) from rotating.

4. The pipeline flow monitoring device for preventing icing according to claim 3 is characterized in that: A rotating rod (11) is fixedly mounted on the top of the ratchet rod (33), one end of the rotating rod (11) extends out of the top of the mounting collar (3), a torsion spring is fixedly connected to the outer wall of the rotating rod (11), and the other end of the torsion spring is fixedly connected to the inside of the mounting collar (3).

5. The pipeline flow monitoring device for preventing icing according to claim 4, characterized in that: A push rod (20) is elastically installed inside the plug-in ring (4), a sliding groove (19) is opened inside the plug-in ring (4), and an arc-shaped push block (18) for pushing the push rod (20) is slidably installed in the sliding groove (19), and a plurality of the push rod (20) and the arc-shaped push block (18) are provided.

6. The pipeline flow monitoring device for preventing icing according to claim 5, characterized in that: A control ring (17) is fixedly mounted on the top of the plurality of arc-shaped top blocks (18); a tooth block (16) is fixedly mounted on the inner wall of the control ring (17); one end of the guide rod (14) extends to the interior of the plug-in ring (4) and is rotatably connected to the plug-in ring (4); a transmission gear (15) is fixedly mounted on the outer wall of the guide rod (14); and the transmission gear (15) is meshed with the tooth block (16).

7. The pipeline flow monitoring device for preventing icing according to claim 6, characterized in that: A placement block (8) is slidably mounted on the top of the mounting collar (3); one end of the guide rod (14) extends into the interior of the placement block (8) and is fixedly mounted with a worm wheel (10); a worm (9) meshing with the worm wheel (10) is rotatably mounted inside the placement block (8); one end of the worm (9) extends out of the outer wall of the placement block (8).

8. The pipeline flow monitoring device for preventing icing according to claim 7, characterized in that: A first fixed tube (26) is fixedly mounted on the inner wall of the monitoring box (5); one end of the laser source (24) extends into the interior of the first fixed tube (26) and is fixedly mounted with a first ball joint (25); A second fixed cylinder (32) is fixedly mounted on the outer wall of the monitoring box (5), a second ball joint (29) is rotatably mounted inside the second fixed cylinder (32), and an operating rod (28) is fixedly mounted on the other end of the second ball joint (29); The outer wall of the laser source (24) is connected to an operating rod (28) via a plurality of operating ropes (31); an operating ring (27) is provided inside the monitoring box (5); and the plurality of operating ropes (31) all penetrate the operating ring (27).

9. The pipeline flow monitoring device for preventing icing according to claim 8, characterized in that: The second fixing tube (32) is composed of four elastic arc-shaped plates, the outer walls of the four elastic arc-shaped plates are all provided with thread grooves, and the outer wall of the second fixing tube (32) is connected to a fastening ring (30) via threads.

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