An ultrasonic flow meter

Abstract

The application discloses an ultrasonic flowmeter, relates to the technical field of fluid measurement, and comprises an outer clamp type flowmeter and a fitting mechanism, the fitting mechanism is arranged on the lower surface of the outer clamp type flowmeter, the fitting mechanism comprises a silicone rubber capsule fixedly connected with the lower surface of the outer clamp type flowmeter, the front end of the outer clamp type flowmeter is fixedly connected with a reserve capsule, the reserve capsule and the silicone rubber capsule are connected in communication through a conveying pipe, the inside of the reserve capsule and the inside of the silicone rubber capsule are filled with a coupling agent, the front end of the outer clamp type flowmeter is fixedly connected with a first support, a screw rod is threadedly inserted into the middle part of the first support, one end of the screw rod close to the reserve capsule is rotationally connected with a pressurizing plate, and the short arm ends of the first support are respectively inserted into the two sides of the pressurizing plate, so that the problem that the change of the contact surface density can cause unstable sound wave transmission of the ultrasonic flowmeter in the running state and thus affect the measurement precision is solved.

Description

Technical Field

[0001] This invention relates to the field of fluid measurement technology, and more specifically, to an ultrasonic flow meter. Background Technology

[0002] An ultrasonic flow meter is a flow measurement device. Among them, the clamp-on ultrasonic flow meter is a non-invasive flow measurement device. By clamping the sensor to the outside of the pipe, it uses the frequency difference of ultrasonic waves propagating in the fluid with and against the flow to calculate the flow rate in real time. It does not require cutting or modifying the pipe and is suitable for various media such as liquids and gases.

[0003] Because the pipe surface is curved, the contact surface between the ultrasonic flow meter and the pipe is made of silicone rubber to ensure a closer fit. Furthermore, to clamp the ultrasonic flow meter to the outside of the pipe, clamping straps are used during installation to apply clamping force and ensure a tight fit. However, during this process, the silicone rubber pad at the interface between the ultrasonic flow meter and the pipe is subjected to pressure, and this pressure varies each time. This leads to an increase in density in the pressure-affected area, and the degree of density increase is highly uncertain. This variation in contact surface density causes instability in the sound wave transmission of the ultrasonic flow meter during operation, thus affecting measurement accuracy. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention aims to provide an ultrasonic flow meter that solves the problem that changes in contact surface density can cause instability in the sound wave transmission of the ultrasonic flow meter during operation, thereby affecting the measurement accuracy.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] An ultrasonic flow meter includes a clamp-on flow meter and a bonding mechanism. The bonding mechanism is disposed on the lower surface of the clamp-on flow meter and includes a silicone rubber bladder fixedly connected to the lower surface of the clamp-on flow meter. A reservoir bladder is fixedly connected to the front end of the clamp-on flow meter. The reservoir bladder and the silicone rubber bladder are connected through a delivery pipe. Both the reservoir bladder and the silicone rubber bladder are filled with a coupling agent. A first bracket is fixedly connected to the front end of the clamp-on flow meter. A screw is threaded into the middle of the first bracket. A pressure plate is rotatably connected to the end of the screw near the reservoir bladder. The short arm ends of the first bracket are respectively inserted into both sides of the pressure plate. A knob is fixedly connected to the end of the screw away from the pressure plate.

[0007] Furthermore, waterproof tape is fixedly connected around the lower surface of the silicone rubber bladder.

[0008] Furthermore, a water-blocking mechanism is provided on the side of the clamp-on flow meter. The water-blocking mechanism includes a movable track fixedly connected to the outer surface of the clamp-on flow meter. A movable column is provided inside the movable track. A chassis is fixedly connected to the bottom end of the movable column. The chassis and the movable column are both slidably connected to the inside of the movable track. A movable block is fixedly sleeved on the surface of the movable column. A connecting rod is fixedly connected to the surface of the movable block. A water-blocking plate is fixedly connected to the end of the connecting rod away from the movable block.

[0009] Furthermore, a rubber sheet is fixedly connected to the lower surface of the water baffle.

[0010] Furthermore, the surface of the movable block has a circular hole and a square hole, which are connected. A positioning pin is inserted into the circular hole and is adapted to the square hole. The surface of the movable track has three insertion holes, which are located in the middle of the three sections of the movable track. Each bend of the movable track has a rounded corner.

[0011] Furthermore, a rotating ring is rotatably connected to the top of the positioning pin, a second bracket is fixedly connected to the top of the moving block, and a first spring is fixedly connected between the second bracket and the rotating ring.

[0012] Furthermore, a pull rod is fixedly connected to the top of the positioning pin, and the pull rod is inserted into the middle of the second bracket.

[0013] Furthermore, a position adjustment mechanism is provided, which is disposed on the top of the clamp-on flow meter. The position adjustment mechanism includes a rotating rod that is rotatably inserted into the top of the clamp-on flow meter. A rotating column is fixedly connected to one end of the rotating rod inside the clamp-on flow meter. Multiple reverse claw strips are fixedly connected to the outer arc surface of the rotating column.

[0014] Furthermore, side plates are fixedly connected to both ends of the rotating column.

[0015] Furthermore, a handle is fixedly connected to the end of the rotating rod away from the rotating column, two third supports are fixedly connected to the outer surface of the external clamp-on flow meter, an annular frame is fixedly connected between the two third supports, multiple sliding grooves are formed on the surface of the annular frame, a slider is slidably connected inside the sliding groove, a rotating shaft is rotatably connected inside the slider, a rotation limiting shaft is fixedly connected to the rear end of the rotating shaft, multiple grooves that cooperate with the rotation limiting shaft are formed on the arc surface of the rotating rod away from the rotating column, a second spring is provided inside the sliding groove, and the two ends of the second spring are fixedly connected to the slider and the sliding groove respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) This solution, by extruding the coupling agent into the silicone rubber bladder, allows the silicone rubber bladder to adhere to the outer wall of the pipe, enabling sound waves to be transmitted to the pipe via the coupling agent and the silicone rubber bladder during the operation of the clamp-on flow meter. This effectively avoids the unstable sound wave transmission caused by uneven density of the transmission medium during operation of the ultrasonic flow meter, thus improving the accuracy of flow measurement.

[0017] (2) Before installing the clamp-on flow meter, the silicone rubber bladder and the clamp-on flow meter are firmly fixed to the pipe surface with waterproof tape to ensure the stability of the installation process. Moreover, the sealing performance of the waterproof tape effectively reduces the risk of external moisture seeping into the contact interface, which can significantly reduce the possibility of measurement accuracy decline due to contact surface corrosion, and further improve the accuracy of flow measurement.

[0018] (3) After the clamp-on flow meter is installed, the liquid can be guided to flow along both sides of the clamp-on flow meter by the baffle plate, which can effectively prevent the liquid from flowing directly to the bottom of the clamp-on flow meter, reduce the long-term immersion of the liquid in the installation part of the flow meter, and prevent the liquid from penetrating to the contact interface and causing corrosion of the contact surface, thus ensuring the accuracy of flow measurement.

[0019] (4) This solution allows for fine and precise displacement adjustment of the clamp-on flow meter by rotating the rotating column, thereby optimizing the installation position of the flow meter. At the same time, the V-shaped reverse claw bar structure provides enhanced gripping force and stability when the rotating column rotates in any direction, effectively reducing the possible slippage during rotation and ensuring smooth and accurate adjustment. This not only provides a more convenient and efficient adjustment method, but also significantly improves the installation accuracy and ease of operation of the clamp-on flow meter. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the front end of the clamp-on flow meter of the present invention; Figure 3 This is a schematic diagram of the structure of the storage bladder and pressure plate of the present invention; Figure 4 This is a schematic diagram of the structure of the storage bladder and the silicone rubber bladder of the present invention; Figure 5 This is a schematic diagram of the structure of the waterproof tape of the present invention; Figure 6 This is a schematic diagram of the internal structure of the moving block of the present invention; Figure 7 This is a schematic diagram of the rotating rod portion of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle; Figure 9 This is a schematic diagram of the reverse claw bar portion of the present invention; Figure 10 This is a schematic diagram of the rotating rod and the rotation limiting shaft of the present invention.

[0021] Explanation of the labels in the diagram: 1. Clamp-on flow meter; 201. Silicone rubber bladder; 202. Reserve bladder; 203. Pressure plate; 204. First support; 205. Delivery pipe; 206. Knob; 207. Screw; 208. Waterproof tape; 301. Moving track; 302. Water baffle; 303. Rubber sheet; 304. Connecting rod; 305. Moving block; 306. Moving column; 307. Chassis; 308. Second bracket; 309. Pull rod; 310. First spring; 311. Positioning pin; 312. Square hole; 313. Circular hole; 314. Rotating ring; 401. Reverse claw bar; 402. Rotating rod; 403. Rotating handle; 404. Side plate; 405. Third bracket; 406. Rotation limiting shaft; 407. Second spring; 408. Rotating shaft; 409. Slider; 410. Ring frame; 411. Rotating column. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-5An ultrasonic flow meter includes a clamp-on flow meter 1 and a bonding mechanism disposed on the lower surface of the clamp-on flow meter 1. The bonding mechanism includes a silicone rubber bladder 201 fixedly connected to the lower surface of the clamp-on flow meter 1. A reservoir bladder 202 is fixedly connected to the front end of the clamp-on flow meter 1. The reservoir bladder 202 and the silicone rubber bladder 201 are connected by a delivery pipe 205. Both the reservoir bladder 202 and the silicone rubber bladder 201 are filled with a coupling agent. By squeezing the coupling agent into the silicone rubber bladder 201, the silicone rubber bladder 201 can be bonded to the surface of the pipe. This ensures that the ultrasonic waves are not disturbed during the operation of the clamp-on flow meter 1. The unstable acoustic wave transmission during the operation of the flow meter improves the measurement accuracy. The front end of the clamp-on flow meter 1 is fixedly connected to a first bracket 204. A screw 207 is threaded into the middle of the first bracket 204. A pressure plate 203 is rotatably connected to the end of the screw 207 near the reservoir 202. Pressure can be applied to the reservoir 202 through the pressure plate 203 to squeeze the coupling agent in the reservoir 202 into the silicone rubber bladder 201. The short arm end of the first bracket 204 is inserted into both sides of the pressure plate 203. A knob 206 is fixedly connected to the end of the screw 207 away from the pressure plate 203.

[0024] The silicone rubber bladder 201 is fixedly connected to the lower surface of the bladder 201 with waterproof tape 208 around its perimeter. The waterproof tape 208 can be used to pre-fix the silicone rubber bladder 201 and its external clamp flow meter 1 to the pipeline, and the waterproof tape 208 can reduce the probability of external water entering the contact surface.

[0025] When installing the clamp-on flow meter 1 using the above technical solution, firstly, use tools to clean the rust from the area on the pipe where the clamp-on flow meter 1 will be installed. Then, attach the clamp-on flow meter 1 to the installation location and secure it to the pipe using straps. Next, turn the knob 206 to rotate the screw 207, which in turn pushes the pressure plate 203 towards the clamp-on flow meter 1. This pressure is applied to the reservoir bladder 202 by the pressure plate 203, squeezing the coupling agent from the reservoir bladder 202 into the silicone rubber bladder 201. This ensures that the silicone rubber bladder 201 is completely adhered to the surface of the pipe. During the operation of the clamp-on flow meter 1, the sound waves are stably transmitted to the pipe through the coupling agent and the silicone rubber bladder 201, preventing instability in the sound wave transmission of the ultrasonic flow meter during operation and thus improving measurement accuracy. Before installing the clamp-on flow meter 1, the silicone rubber bladder 201 and the clamp-on flow meter 1 can be pre-fixed to the pipeline using waterproof tape 208. The waterproof tape 208 can also reduce the chance of external water entering the contact surface, thereby reducing the probability of corrosion on the contact surface affecting the measurement accuracy.

[0026] like Figure 2 and Figure 6 As shown, a water-blocking mechanism is disposed on the side of the clamp-on flow meter 1. The water-blocking mechanism includes a movable track 301 fixedly connected to the outer surface of the clamp-on flow meter 1, allowing the water-blocking plate 302 to move along the track 301. The direction of the water-blocking plate 302 relative to the clamp-on flow meter 1 can be adjusted. A movable column 306 is disposed inside the movable track 301. A base 307 is fixedly connected to the bottom end of the movable column 306. Both the base 307 and the movable column 306 are slidably connected to the inside of the movable track 301. A movable block 305 is fixedly sleeved on the surface of the 6. A connecting rod 304 is fixedly connected to the surface of the movable block 305. A baffle plate 302 is fixedly connected to the end of the connecting rod 304 away from the movable block 305. The baffle plate 302 can make the liquid flow to both sides of the clamp-on flowmeter 1, preventing the liquid from flowing from top to bottom to the contact surface. A rubber sheet 303 is fixedly connected to the lower surface of the baffle plate 302. The rubber sheet 303 can better fit the surface of the pipe, thereby preventing water from flowing down the baffle plate 302 and affecting the performance of the baffle plate 302.

[0027] The movable block 305 has a circular hole 313 and a square hole 312 on its surface. The circular hole 313 and the square hole 312 are connected. Through the cooperation of the circular hole 313 and the square hole 312, the positioning pin 311 can pass through the square hole 312 while aligning with the square hole 312 without affecting the rotation of the positioning pin 311. The positioning pin 311 is inserted into the circular hole 313. The positioning pin 311 is adapted to the square hole 312. The movable track 301 has three insertion holes on its surface. The positioning pin 311 passes through the square hole 312 and enters the corresponding insertion hole to fix the position of the baffle plate 302. The three insertion holes are located in the middle of the three sections of the movable track 301. Each bend of the movable track 301 has rounded corners, so that the baffle plate 302 can move along the path of the movable track 301 without affecting the movement of the baffle plate 302 when turning.

[0028] The top end of the positioning pin 311 is rotatably connected to a rotating ring 314, and the top end of the moving block 305 is fixedly connected to a second bracket 308. A first spring 310 is fixedly connected between the second bracket 308 and the rotating ring 314. When the positioning pin 311 is aligned with the square hole 312, the first spring 310, which is in a compressed state, can push the pin through the square hole 312 and into the corresponding insertion hole. The top end of the positioning pin 311 is fixedly connected to a pull rod 309, and the pull rod 309 is inserted into the middle of the second bracket 308.

[0029] By adopting the above technical solution, when the clamp-on flow meter 1 is installed on the pipeline, since the pipeline is used to transport liquid, the environment may cause liquid to flow on the outer surface of the pipeline. When this liquid flows to the bottom of the clamp-on flow meter 1, with the long-term immersion of the liquid, the liquid will seep into the contact surface and cause corrosion of the contact surface. Therefore, after the clamp-on flow meter 1 is installed, the baffle plate 302 can make the liquid flow to both sides of the clamp-on flow meter 1 to prevent the liquid from flowing from top to bottom to the contact surface.

[0030] As the installation posture of the clamp-on flow meter 1 changes, the baffle plate 302 can be moved along the trajectory of the moving track 301 to adjust its direction relative to the clamp-on flow meter 1, ensuring that the baffle plate 302 is always above the clamp-on flow meter 1 for better applicability. After adjusting the position of the baffle plate 302, rotating the pull rod 309 aligns the positioning pin 311 with the square hole 312. The first spring 310, in a compressed state, then pushes the positioning pin 311 through the square hole 312 into the corresponding insertion hole, thus fixing the position of the baffle plate 302 and preventing it from swinging, thereby achieving a better water blocking effect.

[0031] like Figures 7-10 As shown, a position adjustment mechanism is located on the top of the clamp-on flow meter 1. The position adjustment mechanism includes a rotating rod 402 rotatably inserted into the top of the clamp-on flow meter 1. One end of the rotating rod 402 inside the clamp-on flow meter 1 is fixedly connected to a rotating column 411. The rotating column 411 can be used to move the strap, allowing the clamp-on flow meter 1 to move slowly with the strap as a reference to adjust the position of the flow meter. Multiple reverse claw strips 401 are fixedly connected to the outer arc surface of the rotating column 411. The V-shaped reverse claw strips 401 provide a better gripping effect when the rotating column 411 rotates in any direction. Side plates 404 are fixedly connected to both ends of the rotating column 411. A handle 403 is fixedly connected to the end of the rotating rod 402 away from the rotating column 411. Rotating the handle 403 can rotate the rotating rod 402, thereby driving the rotating column 411 to rotate.

[0032] The external clamp-on flow meter 1 has two third supports 405 fixedly connected to its outer surface. A ring frame 410 is fixedly connected between the two third supports 405. The surface of the ring frame 410 has multiple sliding grooves. A slider 409 is slidably connected inside the sliding groove. A rotating shaft 408 is rotatably connected inside the slider 409. A rotation limiting shaft 406 is fixedly connected to the rear end of the rotating shaft 408. A section of the arc surface of the rotating rod 402 away from the rotating column 411 has multiple grooves that cooperate with the rotation limiting shaft 406. The cooperation between the grooves and the rotation limiting shaft 406 can limit the rotation of the rotating column 411 without manual rotation, preventing the external clamp-on flow meter 1 from sliding. A second spring 407 is provided inside the sliding groove. The thrust provided by the second spring 407 can better fit the rotation limiting shaft 406 into the groove. This ensures that the rotation of the rotating column 411 is not affected during manual operation, while the rotation limiting shaft 406 will not disengage from the groove when stationary. The two ends of the second spring 407 are fixedly connected to the slider 409 and the sliding groove, respectively.

[0033] By adopting the above technical solution, after the external clamp flow meter 1 is tied to the pipeline with the strap, if the fixed position needs to be adjusted, the strap needs to be removed before adjustment, which causes inconvenience. Therefore, by rotating the handle 403, the rotating rod 402 is rotated, which in turn drives the rotating column 411 to rotate. Since the main pressure of the rotating column 411 is borne by the rotating column 411 when the strap is tied to the external clamp flow meter 1, the strap can be moved by rotating the column 411, so that the external clamp flow meter 1 can be moved slowly with the strap as a reference, thereby adjusting the position of the flow meter. In addition, the V-shaped reverse claw bar 401 can provide a better gripping effect when the rotating column 411 rotates in any direction, reducing the phenomenon of slippage and inability to adjust when the rotating column 411 rotates.

[0034] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. An ultrasonic flow meter, comprising an external clamp-on flow meter (1), characterized in that: A bonding mechanism is provided on the lower surface of the clamp-on flow meter (1). The bonding mechanism includes a silicone rubber bladder (201) fixedly connected to the lower surface of the clamp-on flow meter (1). A reservoir bladder (202) is fixedly connected to the front end of the clamp-on flow meter (1). The reservoir bladder (202) and the silicone rubber bladder (201) are connected by a delivery pipe (205). Both the reservoir bladder (202) and the silicone rubber bladder (201) are filled with coupling agent. The front end of the clamp-on flow meter (1) is fixedly connected to a first bracket (204). A screw (207) is threaded into the middle of the first bracket (204). A pressure plate (203) is rotatably connected to one end of the screw (207) near the reservoir (202). The short arm end of the first bracket (204) is inserted into both sides of the pressure plate (203). A knob (206) is fixedly connected to one end of the screw (207) away from the pressure plate (203). A water-blocking mechanism is provided on the side of the clamp-on flow meter (1). The water-blocking mechanism includes a moving track (301) fixedly connected to the outer surface of the clamp-on flow meter (1). A moving column (306) is provided inside the moving track (301). A chassis (307) is fixedly connected to the bottom end of the moving column (306). The chassis (307) and the moving column (306) are both slidably connected to the inside of the moving track (301). A moving block (305) is fixedly sleeved on the surface of the moving column (306). A connecting rod (304) is fixedly connected to the surface of the moving block (305). A water-blocking plate (302) is fixedly connected to the end of the connecting rod (304) away from the moving block (305). The surface of the movable block (305) is provided with a circular hole (313) and a square hole (312), which are connected. A positioning pin (311) is inserted into the circular hole (313), which is compatible with the square hole (312). The surface of the movable track (301) is provided with three insertion holes, which are located in the middle of the three sections of the movable track (301). Each bend of the movable track (301) is rounded. The position adjustment mechanism is located on the top of the clamp-on flow meter (1). The position adjustment mechanism includes a rotating rod (402) that is rotatably inserted into the top of the clamp-on flow meter (1). A rotating column (411) is fixedly connected to one end of the rotating rod (402) inside the clamp-on flow meter (1). Multiple reverse claw strips (401) are fixedly connected to the outer arc surface of the rotating column (411). A handle (403) is fixedly connected to one end of the rotating rod (402) away from the rotating column (411). Two third supports (405) are fixedly connected to the outer surface of the external clamp flow meter (1). An annular frame (410) is fixedly connected between the two third supports (405). Multiple sliding grooves are provided on the surface of the annular frame (410). A slider (409) is slidably connected inside the sliding groove. A rotating shaft (408) is rotatably connected inside the slider (409). A rotation limiting shaft (406) is fixedly connected to the rear end of the rotating shaft (408). Multiple grooves that cooperate with the rotation limiting shaft (406) are provided on a section of the arc surface of the rotating rod (402) away from the rotating column (411). A second spring (407) is provided inside the sliding groove. The two ends of the second spring (407) are fixedly connected to the slider (409) and the sliding groove, respectively.

2. The ultrasonic flow meter according to claim 1, characterized in that: Waterproof tape (208) is fixedly connected around the lower surface of the silicone rubber bladder (201).

3. An ultrasonic flow meter according to claim 1, characterized in that: A rubber sheet (303) is fixedly connected to the lower surface of the water baffle (302).

4. An ultrasonic flow meter according to claim 1, characterized in that: The top end of the positioning pin (311) is rotatably connected to a rotating ring (314), and the top end of the moving block (305) is fixedly connected to a second bracket (308). A first spring (310) is fixedly connected between the second bracket (308) and the rotating ring (314).

5. An ultrasonic flow meter according to claim 1, characterized in that: The top end of the positioning pin (311) is fixedly connected to a pull rod (309), and the pull rod (309) is inserted into the middle of the second bracket (308).

6. An ultrasonic flow meter according to claim 1, characterized in that: Both ends of the rotating column (411) are fixedly connected to side plates (404).

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