Search

CN-121994323-A - Tube core, ultrasonic water meter and tube core manufacturing process

CN121994323ACN 121994323 ACN121994323 ACN 121994323ACN-121994323-A

Abstract

The invention discloses a tube core, an ultrasonic water meter and a tube core manufacturing process, which comprises a left tube core and a right tube core which are integrally connected by adopting a welding process, wherein the left tube core and the right tube core are of semicircular strip structures, a measuring channel penetrating along the length direction of the tube core is formed inside the tube core after the left tube core and the right tube core are integrally connected, two groups of convex parts protruding upwards are arranged at the lower end of the inside of the measuring channel, mounting holes which are opposite to the two groups of convex parts one by one are formed at the upper end of the measuring channel, a lower reflecting plate is embedded at one side of the two groups of convex parts opposite to each other, an upper reflecting plate is embedded at the upper part between the two corresponding groups of convex parts of the measuring channel, the upper reflecting plates are horizontally arranged along the length direction of the tube core, the two lower reflecting plates are axially and obliquely and symmetrically arranged relative to the tube core, and a positioning hole is formed at the top of the tube core. The ultrasonic water meter has the beneficial effects that the reflector plate assembly can be more conveniently and stably installed by embedding the reflector plate in the spliced tube core and placing the tube core in the detection section of the ultrasonic water meter.

Inventors

  • ZHAO JING
  • HE BINGWEI
  • XU SHANGTONG
  • TANG GUOQIANG

Assignees

  • 重庆市伟岸测器制造股份有限公司

Dates

Publication Date
20260508
Application Date
20260209

Claims (10)

  1. 1. The tube core is characterized by comprising a left core body (1) and a right core body (2) which are integrally connected by adopting a welding process, wherein the left core body (1) and the right core body (2) are of semicircular strip structures, a measuring channel penetrating along the length direction of the tube core is formed inside the tube core after the left core body and the right core body are integrally connected, two groups of convex parts (3) protruding upwards are arranged at the lower end of the inside of the measuring channel, and mounting holes (4) which are opposite to the two groups of convex parts (3) one by one are formed at the upper end of the measuring channel; One side, opposite to each other, of each of the two groups of protruding parts (3) is embedded with a lower reflecting sheet (5), an upper reflecting sheet (6) is embedded at the upper part of the measuring channel between the two corresponding groups of protruding parts (3), the upper reflecting sheet (6) is horizontally arranged along the length direction of the tube core, and the two lower reflecting sheets (5) are obliquely and symmetrically arranged relative to the axial direction of the tube core; And a positioning hole (7) is formed in the top of the tube core.
  2. 2. The die of claim 1, wherein the lower end of the left core body (1) close to one side surface of the right core body (2) is provided with two groups of first triangular bulge structures (1 a), the position of the right core body (2) corresponding to the first triangular bulge structures (1 a) is provided with a second triangular bulge structure (2 a), and the first triangular bulge structures (1 a) and the second triangular bulge structures (2 a) are spliced to form the bulge (3).
  3. 3. The die of claim 2, wherein a first mounting groove (1 b) opposite to the first triangular protruding structure (1 a) is formed in the upper end of the left core body (1), a second mounting groove (2 b) opposite to the second triangular protruding structure (2 a) is formed in the upper end of the right core body (2), and the mounting hole (4) is formed by surrounding the first mounting groove (1 b) and the second mounting groove (2 b).
  4. 4. The tube core of claim 1, wherein a left semicircular hole (1 c) is formed in the upper end of the middle of the left core body (1), a right semicircular hole (2 c) corresponding to the left semicircular hole is formed in the upper end of the middle of the right core body (2), and the left semicircular hole (1 c) and the right semicircular hole (2 c) are surrounded to form the positioning hole (7).
  5. 5. The die of claim 1, wherein the left core (1) has a left contact portion (1 d) contacting the right core (2), the right core (2) has a right contact portion (2 d) contacting the left core (1), the right contact portion (2 d) is provided with a mounting protrusion (2 e) extending toward a side of the left core (1), and the left contact portion (1 d) is provided with a mounting groove (1 e) corresponding to the mounting protrusion (2 e).
  6. 6. The tube core according to claim 2, wherein the inner inclined surfaces of the two first triangular bulge structures (1 a) are respectively provided with a first lower mounting groove (1 f), the lower reflecting sheet (5) is embedded in the first lower mounting grooves (1 f), the inner inclined surfaces of the two second triangular bulge structures (2 a) are respectively provided with a second lower mounting groove (2 f), and after the left core body (1) and the right core body (2) are connected into a whole, two ends of the lower reflecting sheet (5) are supported between the first lower mounting grooves (1 f) and the second lower mounting grooves (2 f); The upper portion between two protruding structures of first triangle (1 a) is equipped with first mounting groove (1 g), go up reflector plate (6) and inlay and be in the first mounting groove (1 g), two the upper portion between protruding structure of second triangle (2 a) is equipped with mounting groove (2 g) on the second, after left core (1) and right core (2) are connected as an organic wholely, go up reflector plate (6) both ends and support between mounting groove (1 g) and the second on mounting groove (2 g).
  7. 7. The tube core of claim 1, wherein the outer sides of the two convex parts (3) corresponding to the measuring channel are respectively provided with a water inlet section (a) and a water outlet section (b), the area between the two convex parts (3) corresponding to the measuring channel is a detection section (c), and the aperture of the detection section (c) is gradually reduced from front to back.
  8. 8. The tube core according to claim 7, wherein the water inlet section (a) is provided with a separation sheet (8) extending in the length direction of the tube core.
  9. 9. An ultrasonic water meter comprises a water meter main body (9) and a measuring pipeline (10) fixedly arranged at the lower end of the water meter main body (9), wherein two ultrasonic transducers (11) are arranged at the lower end of the water meter main body (9), two transmission holes (10 a) are formed in the measuring pipeline (10) corresponding to the ultrasonic transducers (11), and the ultrasonic water meter is characterized in that a tube core according to any one of claims 1 to 8 is fixedly arranged in the measuring pipeline (10), after the tube core is arranged in the measuring pipeline (10), the mounting hole (4) is opposite to the transmission holes (10 a), a connecting hole (10 b) is formed in a position, between the two transmission holes (10 a), of the measuring pipeline (10), and the connecting hole (10 b) is opposite to the positioning hole (7).
  10. 10. A manufacturing method for manufacturing the die of any of claims 1 to 8, comprising the steps of: respectively placing a lower reflecting sheet (5) and an upper reflecting sheet (6) in corresponding positions of an injection mold of the left core body (1); step two, fixedly embedding a lower reflecting sheet (5) and an upper reflecting sheet (6) in the left core body (1) through an injection molding process; Thirdly, forming a right core body (2) through injection molding by an injection molding process; and fourthly, splicing the left core body (1) and the right core body (2) into a whole, and welding the left core body and the right core body into a whole through an ultrasonic welding process to form a tube core.

Description

Tube core, ultrasonic water meter and tube core manufacturing process Technical Field The invention relates to the technical field of ultrasonic water meters, in particular to a tube core, an ultrasonic water meter and a tube core manufacturing process. Background Currently, ultrasonic water meters are widely used in the field of flow measurement, which calculate flow velocity and flow rate by detecting the difference in propagation time of an ultrasonic signal in a fluid. In conventional ultrasonic meter designs, a reflective sheet is typically mounted directly within the meter tube of the meter for reflecting the ultrasonic signal to achieve multiple reflections of the signal and enhance the detection accuracy. However, this design has the following technical problems: 1. The installation is complex, the requirement on positioning accuracy is high, the reflecting sheet needs to be independently installed in the detection tube, the accuracy of the angle and the position of the reflecting sheet needs to be ensured in the installation process, otherwise, the reflecting path of ultrasonic waves can be influenced, and the measurement error is caused. This not only increases the difficulty of assembly but also increases the cost of production. 2. The structure stability is insufficient, the reflecting sheet is directly exposed in the flow channel and is impacted by water flow for a long time, displacement or deformation is easy to occur, the measurement reliability is affected, and even the water meter is likely to be broken due to loosening and falling. Disclosure of Invention Therefore, one of the purposes of the present invention is to provide a die, which can make the reflective sheet assembly more convenient and stable to install, and ensure the stable measurement of the ultrasonic water meter. In order to achieve the above purpose, the technical scheme of the invention is as follows: A tube core is characterized by comprising a left core body and a right core body which are integrally connected by adopting a welding process, wherein the left core body and the right core body are of semicircular strip structures, a measuring channel penetrating along the length direction of the tube core is formed inside the left core body and the right core body after the left core body and the right core body are integrally connected, two groups of protruding parts protruding upwards are arranged at the lower end of the inside of the measuring channel, mounting holes which are opposite to the two groups of protruding parts one by one are formed in the upper end of the measuring channel, a lower reflecting plate is embedded in one side, opposite to each other, of the two groups of protruding parts, an upper reflecting plate is embedded in the upper part of the measuring channel between the two corresponding groups of protruding parts, the upper reflecting plate is horizontally arranged along the length direction of the tube core, the two lower reflecting plates are obliquely and symmetrically arranged relative to the axial direction of the tube core, and positioning holes are formed in the top of the tube core. The structure is adopted, the tube core is formed by splicing the two tube cores, the manufacturing process difficulty of the tube core is greatly reduced, the reflecting sheet is arranged in the tube core in an embedded mode, the reflecting sheet can be installed more stably, the installing precision of the reflecting sheet is higher, the tube core is installed in the measuring pipeline again through the reflecting sheet, the integral installation is simpler, the follow-up overhaul is more convenient, and the arranged locating holes can facilitate the quick locating installation of the tube core. Preferably, the lower end of the left core body, which is close to one side surface of the right core body, is provided with two groups of first triangular bulge structures, the position of the right core body, which corresponds to the first triangular bulge structures, is provided with a second triangular bulge structure, and the first triangular bulge structure and the second triangular bulge structure are spliced to form the bulge. By adopting the structure, the design of the triangular bulge structure can facilitate forming the bulge, and then the installation of the lower reflecting sheet is facilitated. Preferably, the upper end of the left core body is provided with a first mounting groove which is opposite to the first triangular bulge structure, the upper end of the right core body is provided with a second mounting groove which is opposite to the second triangular bulge structure, and the first mounting groove and the second mounting groove are surrounded to form the mounting hole. By adopting the structure, the ultrasonic transducer can conveniently transmit and receive ultrasonic waves from the mounting hole. Preferably, the upper end of the middle part of the left core body is provided with a left semicircula