CN-224231027-U - Ultrasonic measurement pipeline and ultrasonic water meter

Abstract

The utility model discloses an ultrasonic measuring pipeline and an ultrasonic water meter, wherein the measuring pipeline comprises a measuring pipeline, a first guide pipeline and a second guide pipeline, the first guide pipeline and the second guide pipeline are positioned on the side surface of the measuring pipeline and are respectively communicated with the measuring pipeline through a first perforation and a second perforation, the plane of the first guide pipeline is not coplanar with the plane of the measuring pipeline, the plane of the second guide pipeline is not coplanar with the plane of the measuring pipeline, a transmitting probe is used for transmitting ultrasonic waves, a receiving probe is used for receiving the ultrasonic waves, a reflecting piece comprises a first reflecting piece and a second reflecting piece, the first reflecting piece is arranged on the first guide pipeline and positioned below the transmitting probe, and the second reflecting piece is arranged on the second guide pipeline and positioned below the receiving probe.

Inventors

• WANG ZHIFENG
• WANG QINGLONG
• XU HAITAO

Assignees

• 北京声链科技有限公司

Dates

Publication Date

20260512

Application Date

20250515

Claims (20)

1. 1. An ultrasonic measurement pipeline connected in series with a flow channel for measuring the flow velocity of fluid flowing through the flow channel, the ultrasonic measurement pipeline comprising: The pipe body is connected in series with two ends of the flow channel to form a water inlet and a water outlet respectively, and comprises a measuring pipe, a first guiding pipe and a second guiding pipe, wherein the first guiding pipe and the second guiding pipe are positioned on the side surface of the measuring pipe and are communicated with the measuring pipe through a first perforation and a second perforation respectively, the plane of the first guiding pipe is not coplanar with the plane of the measuring pipe, and the plane of the second guiding pipe is not coplanar with the plane of the measuring pipe; The transmitting probe is configured on the first guide pipeline and used for transmitting ultrasonic waves; the receiving probe is configured on the second guide pipeline and used for receiving ultrasonic waves; The reflection piece comprises a first reflection piece and a second reflection piece, wherein the first reflection piece is arranged on the first guide pipeline and is positioned below the transmitting probe, and the second reflection piece is arranged on the second guide pipeline and is positioned below the receiving probe.
2. 2. An ultrasonic measurement line according to claim 1, wherein the plane of the first guide conduit is perpendicular to the plane of the measurement conduit and the plane of the second guide conduit is perpendicular to the plane of the measurement conduit.
3. 3. The ultrasonic measurement line of claim 1, wherein the body further comprises a liner tube nested within the measurement conduit.
4. 4. An ultrasonic measurement line according to claim 1, wherein the first and second guide conduits are located on the same side of the measurement conduit.
5. 5. The ultrasonic measurement line of claim 4, wherein the reflector further comprises a third reflector disposed in the measurement conduit.
6. 6. The ultrasonic measurement line of claim 4, wherein the reflector further comprises a third reflector, a fourth reflector, and a fifth reflector, the third reflector, the fourth reflector, and the fifth reflector being disposed on opposite sides of the measurement line.
7. 7. An ultrasonic measurement line according to claim 1, wherein the first and second guide conduits are located on either side of the measurement conduit.
8. 8. An ultrasonic measurement line according to claim 4 or claim 7 wherein the distance between the centre of the first reflector and the centre of the transmitting probe is different from the distance between the centre of the second reflector and the centre of the receiving probe.
9. 9. An ultrasonic measurement line according to claim 1, wherein the transmitting and receiving probes are cylindrical in shape.
10. 10. An ultrasonic measurement line according to claim 3 wherein the liner tube includes a reduced diameter portion between the inlet and the outlet for reducing the cross-sectional area of the liner tube, the ends of the liner tube being symmetrical.
11. 11. The ultrasonic measurement line according to claim 10, wherein the longitudinal section of the reduced diameter portion is square or rectangular, and four corners of the square or rectangular are circular arcs.
12. 12. An ultrasonic measurement line according to claim 5 or 11 wherein the third reflector is secured to a side of the reduced diameter portion of the liner tube.
13. 13. An ultrasonic measurement line according to claim 6 or claim 11 wherein the third and fifth reflectors are fixed to one side of the reduced diameter portion of the liner tube and the fourth reflector is fixed to the other side of the reduced diameter portion of the liner tube.
14. 14. An ultrasonic measurement line according to claim 3, wherein the gap between the liner and the measurement conduit is provided with a sealing ring between the first and second perforations.
15. 15. An ultrasonic measurement line according to claim 3 wherein the liner tube is provided with pressure relief holes.
16. 16. The ultrasonic measurement line of claim 1, wherein the first reflector reflecting surface is disposed at an acute angle to the front face of the transmitting probe and the second reflector reflecting surface is disposed at an acute angle to the front face of the receiving probe.
17. 17. The ultrasonic measurement pipeline according to claim 1, wherein the transmitting probe is located between the transmitting probe fixing member and the inner protrusion of the first guide pipeline, the transmitting probe fixing member is fixed to the top of the first guide pipeline by bolts, the receiving probe is located between the receiving probe fixing member and the inner protrusion of the second guide pipeline, and the receiving probe fixing member is fixed to the top of the second guide pipeline by bolts.
18. 18. The ultrasonic measurement pipeline according to claim 1, wherein the first reflecting member comprises a first fixed block and a first movable block, the first fixed block and the first guide pipeline are integrally cast, the first movable block and the first fixed block are jointly fixed through bolts and limiting columns, the second reflecting member comprises a second fixed block and a second movable block, the second fixed block and the second guide pipeline are integrally cast, and the second movable block and the second fixed block are jointly fixed through bolts and limiting columns.
19. 19. The ultrasonic measurement line of claim 1, 5 or 6, wherein the first, second, third, fourth and fifth reflectors are stainless steel and the reflective surface is a mirror surface.
20. 20. An ultrasonic measurement line according to claim 1, wherein the measurement conduit, the first guide conduit and the second guide conduit are integrally cast.

Description

Ultrasonic measurement pipeline and ultrasonic water meter Technical Field The utility model relates to the technical field of ultrasonic measurement, in particular to an ultrasonic measurement pipeline and an ultrasonic water meter. Background The time difference method is a typical ultrasonic flow measurement method, and the average flow velocity of fluid is calculated by respectively measuring the forward and backward propagation time of sound waves in a flowing medium through a circuit, and then the average flow velocity is multiplied by the sectional area of a flow channel to obtain the flow of the fluid. The ultrasonic water meter is a metering device for measuring water flow by using a time difference method, the sound speed in water is high and can reach 1500m/s, the time difference corresponding to the minimum working flow is usually small, only ns magnitude is needed, and the difficulty of realizing accurate measurement is high. This problem is more serious for small-caliber ultrasonic water meters, because the effective transmission distance is smaller due to the smaller size, the minimum time difference can be lower than 1ns, and the difficulty of measuring such a short time difference with 2% accuracy is greater, so the channel design of the small-caliber water meter tends to seek to increase the effective transmission distance. The conventional small-caliber ultrasonic water meter channel design is shown in fig. 1, and mainly comprises three designs of U shape, V shape and W shape. The U-shaped channel transducer is arranged above the flow channel, the effective transmission distance is equal to the distance between the transducers by utilizing the two reflecting sheets in the flow channel, the whole size is the most compact and is easier to process, but only the flow velocity on the axis of the flow channel can be tested, meanwhile, the reflecting sheets can form pressure loss and influence the flow field quality and measurement precision, the V-shaped channel can solve the problems of pressure loss and flow field quality by utilizing the reflecting sheets on the side surface of the flow channel to reflect ultrasonic waves, but the effective transmission distance is shortened, the transducers are obliquely arranged, the size is obviously increased, the installation is inconvenient, meanwhile, the difficulty and the cost of precisely processing two transducer installation holes are obviously increased, and the W-shaped channel can be formed into a W-shaped reflection configuration by utilizing the reflecting sheets arranged on the three side walls, so that the problem of the V-shaped channel can be improved to a certain extent, but the complexity and the processing cost are obviously increased, and the application is less. By combining the above, the ultrasonic water meter is designed to measure the maximum flow velocity information as far as possible to reflect the real flow state without influencing the flow field and causing additional pressure loss, and meets the requirements of small size and convenient processing. Disclosure of utility model A series of concepts in a simplified form are introduced in the summary of the utility model, which will be described in further detail in the detailed description. The summary of the utility model is not intended to limit the critical and essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter. The utility model provides an ultrasonic measuring pipeline which is connected in series with a runner to measure the flow rate of fluid flowing through the runner, wherein the ultrasonic measuring pipeline comprises a pipeline body, a first guide pipeline and a second guide pipeline, wherein the pipeline body is connected in series with two ends of the runner to form a water inlet and a water outlet respectively, the pipeline body comprises a measuring pipeline, the first guide pipeline and the second guide pipeline are positioned on the side surface of the measuring pipeline and are respectively communicated with the measuring pipeline through a first perforation and a second perforation, the plane of the first guide pipeline is not coplanar with the plane of the measuring pipeline, the plane of the second guide pipeline is not coplanar with the plane of the measuring pipeline, a transmitting probe is arranged on the first guide pipeline and is used for transmitting ultrasonic waves, a receiving probe is arranged on the second guide pipeline and is used for receiving the ultrasonic waves, the reflecting piece comprises a first reflecting piece and a second reflecting piece, the first reflecting piece is arranged below the transmitting probe, and the second reflecting piece is arranged below the receiving probe. Preferably, the plane of the first guiding pipeline is perpendicular to the plane of the measuring pipeline, and the plane of the second guiding pipeline is perpendicular to