Multifunctional externally-attached ultrasonic flowmeter

Abstract

The utility model discloses a multifunctional externally-attached ultrasonic flowmeter, which relates to the technical field of ultrasonic flowmeters and comprises two pipe clamping mechanisms, position adjusting mechanisms are arranged at the top end and the top end between the pipe clamping mechanisms, abutting mechanisms are connected to the position adjusting mechanisms, and the two ends of the pipe clamping mechanisms are connected with the abutting mechanisms. Sensors are arranged at the ends, close to each other, of the abutting mechanisms, the ends, away from the abutting mechanisms, of the sensors are coated with coupling agents, the position adjusting mechanism is fixed to the outer wall of the pipeline through the pipe clamping mechanism, the position adjusting mechanism can adjust the angles of the abutting mechanisms on the pipe clamping mechanism, and the abutting mechanisms can conduct transverse position adjustment on the position adjusting mechanism. The abutting mechanism can enable the sensor to be stably attached to the pipe clamping mechanism, the sensor and the pipe clamping mechanism can be firmly and stably attached, meanwhile, different attaching angles and positions can be adjusted, and the multifunctional limiting effect is achieved for detection of the flow meter.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic flowmeters, in particular to a multifunctional external ultrasonic flowmeter. Background Art

[0002] The external ultrasonic flowmeter is a flow measurement instrument based on microprocessor technology. In terms of installation, the external ultrasonic flowmeter is remarkably simple. Its sensor only needs to be attached to the outer wall of the pipe to measure the fluid flow rate. There is no need to cut the pipe for installation, and there is no specific pipe diameter requirement. This allows it to be quickly and conveniently deployed in various application scenarios. In terms of performance, the external ultrasonic flowmeter exhibits the characteristics of high precision, high reliability and high performance. Its working principle is to transmit and receive ultrasonic pulses through the probe, and use the difference in sound wave propagation speed in the downstream and upstream directions, as well as the difference in propagation time at the same propagation distance to obtain the flow velocity and then the flow rate. This non-contact measurement method enables it to cope with various complex fluid environments, including highly corrosive, non-conductive, radioactive, flammable and explosive media, etc., and is almost not affected by various parameters of the measured medium.

[0003] In the process of implementing the solution, the inventors found that the following problems in the prior art have not been well solved: the external ultrasonic flow meter includes a detection sensor, a wire and a conversion table. When the sensor is attached to the outer wall of the medium pipe, it will adopt an N / V / arc / straight line arrangement according to the detection needs, and then be limited to the outer wall of the pipe by a screw clamp. However, since the inner wall surface of the clamp and the pipe surface are easily displaced due to smoothness, the positioning is unstable. When the sensor is positioned, it cannot be accurately parallel to the position, resulting in inaccuracy in the sensor detection data. Utility Model Content

[0004] The main purpose of the utility model is to provide a multifunctional external ultrasonic flow meter, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A multifunctional external ultrasonic flowmeter, comprising a tube clamping mechanism, wherein the number of the tube clamping mechanisms is two, the top ends between the tube clamping mechanisms are provided with a positioning mechanism, the positioning mechanisms are connected with a tightening mechanism, the ends of the tightening mechanisms close to each other are provided with a sensor, and the ends of the sensors away from the tightening mechanisms are coated with a coupling agent;

[0007] The pipe clamping mechanism comprises two arc-shaped hoops, each of which has an arc-shaped groove on its side wall, and bolt assemblies are provided at both ends of the two arc-shaped hoops, and the two arc-shaped hoops are detachably connected by the bolt assemblies.

[0008] The positioning mechanism comprises two short screws, the outer walls of the short screws are both threadedly connected with two nuts 1, the ends of the short screws close to each other are both fixed with U-shaped frames, the top ends between the two U-shaped frames are both provided with long screws, the two ends of the long screws are respectively fixed to the top ends of the U-shaped frames, and the outer walls of the long screws are both threadedly connected with two nuts 2;

[0009] The clamping mechanism comprises a fixing plate, both ends of the top of the fixing plate are fixed with slide cylinders, the fixing plate is threadedly connected with an adjusting screw at a position between the slide cylinders, and one end of the adjusting screw passing through the fixing plate is rotatably connected with a pressure plate.

[0010] Preferably, the short screw rods are respectively connected to the arc-shaped grooves of the arc-shaped hoop, and the nuts are respectively located on both sides of the arc-shaped hoop.

[0011] Preferably, the slide cylinders are respectively sleeved on the outer walls of the long screw rods, and the two nuts are respectively in contact with the sides of the slide cylinders that are close to the long screw rods.

[0012] Preferably, the inner diameter of the slide barrel matches the outer diameter of the long screw.

[0013] Preferably, a protective pad is bonded to the inner wall of the arc-shaped hoop.

[0014] Preferably, one end of the pressing plate away from the slide cylinder is in contact with a side of the sensor away from the coupling agent.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The positioning mechanism is fixed on the outer wall of the pipe through the tube clamping mechanism. The positioning mechanism can adjust the angle of the clamping mechanism on the tube clamping mechanism. The clamping mechanism can adjust the lateral position on the positioning mechanism. The clamping mechanism can stably fit the sensor on the tube clamping mechanism, which not only makes the sensor and the tube clamping mechanism fit firmly and stably, but also can adjust different fitting angles and positions, so that the flow meter detection has a multi-functional limit effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a multifunctional external ultrasonic flowmeter of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a multifunctional external ultrasonic flowmeter of the utility model when the adjustment mechanism is at different positions on the pipe clamping mechanism;

[0019] Figure 3 This is a schematic diagram of the structure of a pipe clamping mechanism of a multifunctional external ultrasonic flowmeter of the utility model;

[0020] Figure 4 The utility model is a structural schematic diagram of a positioning mechanism, a pressing mechanism and a sensor of a multifunctional external ultrasonic flowmeter.

[0021] In the figure: 1. pipe clamping mechanism; 11. arc hoop; 12. bolt assembly; 13. arc groove; 14. protective pad; 2. adjustment mechanism; 21. short screw; 22. long screw; 23. U-shaped frame; 24. nut one; 25. nut two; 3. tightening mechanism; 31. fixing plate; 32. adjusting screw; 33. slide cylinder; 34. pressure plate; 4. sensor; 5. coupling agent. DETAILED DESCRIPTION

[0022] 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 described below in conjunction with specific implementation methods.

[0023] like Figure 1-4 As shown, a multifunctional external ultrasonic flowmeter includes a tube clamping mechanism 1, the number of the tube clamping mechanisms 1 is two, the top ends between the tube clamping mechanisms 1 are provided with a positioning mechanism 2, the positioning mechanism 2 is connected with a tightening mechanism 3, the ends of the tightening mechanisms 3 close to each other are provided with a sensor 4, and the ends of the sensors 4 away from the tightening mechanisms 3 are coated with a coupling agent 5;

[0024] The pipe clamping mechanism 1 comprises two arc-shaped hoops 11, each of which has an arc-shaped groove 13 on its side wall, and bolt assemblies 12 are provided at both ends of the two arc-shaped hoops 11, and the two arc-shaped hoops 11 are detachably connected by the bolt assemblies 12;

[0025] The positioning mechanism 2 includes two short screws 21, and two nuts 24 are threadedly connected on the outer walls of the short screws 21. A U-shaped frame 23 is fixed to the ends of the short screws 21 close to each other. A long screw 22 is provided at both ends of the top between the two U-shaped frames 23. The two ends of the long screw 22 are respectively fixed to the top end of the U-shaped frame 23, and two nuts 25 are threadedly connected on the outer walls of the long screw 22.

[0026] The clamping mechanism 3 includes a fixed plate 31 , with slides 33 fixed to both ends of the top of the fixed plate 31 , an adjusting screw 32 is threadedly connected to the position of the fixed plate 31 between the slides 33 , and one end of the adjusting screw 32 passing through the fixed plate 31 is rotatably connected to a pressure plate 34 .

[0027] Specifically, the short screw rod 21 is respectively connected to the arc groove 13 of the arc hoop 11 , and the nut 24 is respectively located on both sides of the arc hoop 11 to ensure the angle limitation of the adjustment mechanism 2 on the tube clamping mechanism 1 .

[0028] Specifically, the slide cylinders 33 are respectively sleeved on the outer wall of the long screw rod 22 , and the second nut 25 is respectively in contact with the side close to the slide cylinder 33 to ensure that the tightening mechanism 3 is limited and fixed after the lateral position adjustment on the adjustment mechanism 2 is completed.

[0029] Specifically, the inner diameter of the slide cylinder 33 matches the outer diameter of the long screw 22 to avoid shaking due to size difference.

[0030] Specifically, a protective pad 14 is bonded to the inner wall of the arc-shaped hoop 11 to ensure the stability of the pipe clamping mechanism 1 when installed on the outer wall of the pipeline.

[0031] Specifically, one end of the pressing plate 34 away from the slide cylinder 33 is in contact with one side of the sensor 4 away from the coupling agent 5 to ensure stability during pressing.

[0032] Working principle: The arc hoops 11 of the clamping mechanism 1 are respectively sleeved on the outer walls of the top and bottom ends of the pipe, and the two arc hoops 11 are connected by the bolt assembly 12, so that the protective pad 14 contacts the outer wall of the pipe, and the short screw 21 slides in the arc groove 13, so that the angle of the clamping mechanism 3 can be rotated. The angle of the pressure plate 34 in the clamping mechanism 3 is the angle of the sensor 4 on the outer wall of the pipe. The angle can also be greatly adjusted by the position of the clamping mechanism 1 on the outer wall of the pipe. The short screw 21 passes through the arc groove 13. After the groove 13, the nut 24 rotates and clamps on both sides of the arc hoop 11 to limit the adjusted positioning mechanism 2. The sliding of the slide 33 on the outer wall of the long screw 22 can adjust the lateral position of the sensor 4 on the outer wall of the pipeline, and the nut 25 rotates and clamps on both ends of the slide 33 to achieve the positioning effect of the horizontal position of the clamping mechanism 3. Then, the rotation of the adjusting screw 32 drives the pressing plate 34 to descend, and the sensor 4 attached to the outer wall of the pipeline is pressed and limited to ensure stability during detection;

[0033] When the user detects the straight line, the two sensors 4 need to maintain a horizontally parallel state on the same side. It is only necessary to add two clamping mechanisms 3 to the positioning mechanism 2. In the description of this application, only one clamping mechanism 3 is described on the positioning mechanism 2. In fact, according to the needs of the user, two clamping mechanisms 3 can be provided on the positioning mechanism 2 when the application is manufactured to achieve more functional positioning.

[0034] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multifunctional external ultrasonic flowmeter, comprising a tube clamping mechanism (1), characterized in that: The number of the tube clamping mechanisms (1) is two, and the top ends of the tube clamping mechanisms (1) are each provided with a positioning mechanism (2), and each of the positioning mechanisms (2) is connected with a tightening mechanism (3), and each of the ends of the tightening mechanisms (3) close to each other is provided with a sensor (4), and each of the ends of the sensors (4) away from the tightening mechanisms (3) is coated with a coupling agent (5); The pipe clamping mechanism (1) comprises two arc-shaped hoops (11), each of the side walls of the arc-shaped hoops (11) is provided with an arc-shaped groove (13), both ends of the two arc-shaped hoops (11) are provided with bolt assemblies (12), and the two arc-shaped hoops (11) are detachably connected via the bolt assemblies (12); The positioning mechanism (2) comprises two short screws (21), the outer walls of the short screws (21) are both threadedly connected with two nuts (24), the ends of the short screws (21) close to each other are both fixed with a U-shaped frame (23), the top ends between the two U-shaped frames (23) are both provided with a long screw (22), the two ends of the long screw (22) are respectively fixed to the top end of the U-shaped frame (23), and the outer walls of the long screw (22) are both threadedly connected with two nuts (25); The tightening mechanism (3) comprises a fixing plate (31), slide cylinders (33) are fixed to both ends of the top of the fixing plate (31), an adjusting screw (32) is threadedly connected to the fixing plate (31) between the slide cylinders (33), and one end of the adjusting screw (32) passing through the fixing plate (31) is rotatably connected to a pressure plate (34).

2. A multifunctional external ultrasonic flowmeter according to claim 1, characterized in that: The short screw rod (21) is respectively connected to the arc-shaped groove (13) of the arc-shaped hoop (11), and the nut 1 (24) is respectively located on both sides of the arc-shaped hoop (11).

3. The multifunctional external ultrasonic flowmeter according to claim 1, characterized in that: The slide cylinders (33) are respectively sleeved on the outer walls of the long screw rods (22), and the second nuts (25) are respectively in contact with the sides of the slide cylinders (33) that are close to each other.

4. The multifunctional external ultrasonic flowmeter according to claim 1, characterized in that: The inner diameter of the slide cylinder (33) matches the outer diameter of the long screw (22).

5. The multifunctional external ultrasonic flowmeter according to claim 1, characterized in that: A protective pad (14) is bonded to the inner wall of the arc-shaped hoop (11).

6. The multifunctional external ultrasonic flowmeter according to claim 1, characterized in that: One end of the pressure plate (34) away from the slide cylinder (33) is in contact with a side of the sensor (4) away from the coupling agent (5).

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