Ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device

Abstract

The present application relates to the technical field of fluid flow metering, and relates to an ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device. The large-caliber straight-through multi-channel ultrasonic fluid measuring device comprises a measuring pipe body; a plurality of transducer groups are provided on the measuring pipe body, each transducer group comprises two oppositely arranged ultrasonic transducers, and the ultrasonic transducers are arranged at the end of the measuring pipe body; the two ultrasonic transducers in a same transducer group are located at different ends of the measuring pipe body; and all the ultrasonic transducers are distributed in the circumferential direction of the measuring pipe body at the viewing angle of the end of the measuring pipe body. The present application has the effect of improving the measurement accuracy of a fluid flow in an ultra-large-caliber pipe body.

Description

An ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device Technical Field

[0001] The present application relates to the technical field of fluid flow measurement, and in particular to an ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device. Background Art

[0002] The ultrasonic fluid measuring device can specifically be an ultrasonic flowmeter, which uses paired ultrasonic transducers to alternately (or simultaneously) transmit and receive ultrasonic waves in opposite directions (i.e., form a measurement sound channel). The flow velocity of the fluid is indirectly measured by observing the time difference of the ultrasonic wave propagating in the fluid medium in the forward or reverse flow state, and the flow rate is then calculated based on the flow velocity.

[0003] Specifically, an ultrasonic fluid measuring device generally includes a measuring tube body and a transducer. The measuring tube body is installed on the water pipe through a flange and other fixing components. A mounting hole is opened through the side wall of the measuring tube body. The transducers are arranged in pairs and fixedly inserted into the mounting hole. The detection ends of the two paired transducers are arranged facing each other to facilitate the transmission and reception of ultrasonic waves.

[0004] However, for ultra-large diameter (usually DN200 and above) straight-through ultrasonic fluid metering devices, due to their large diameter, the flow pattern of the fluid in the pipe is extremely susceptible to interference (such as the influence of bends, valves, unstable flow, etc.), resulting in unstable flow rates in different areas of the pipe. The above-mentioned traditional ultrasonic fluid measurement devices (such as the existing D400 and X-type single-plane sampling ultra-large diameter measurement devices) have a single measurement channel and are therefore extremely susceptible to the influence of front and rear bends, valves, etc., resulting in large measurement errors and poor accuracy. Summary of the Invention

[0005] In order to improve the measurement accuracy of fluid flow in an ultra-large diameter pipe, the present application provides an ultra-large diameter straight-through multi-channel ultrasonic fluid measuring device.

[0006] The present application provides an ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device, which includes a measuring tube body, on which are arranged several transducer groups, each of which includes two ultrasonic transducers arranged opposite to each other, and the ultrasonic transducers are arranged at the end of the measuring tube body. The two ultrasonic transducers in the same transducer group are located at different ends of the measuring tube body; and from the perspective of the end of the measuring tube body, all the ultrasonic transducers are distributed along the circumference of the measuring tube body.

[0007] By adopting the above technical solution, first, the present application sets up multiple transducer groups, and each transducer group includes a pair of ultrasonic transducers that radiate each other. In addition, when the ultrasonic transducers are viewed from the end of the measuring tube body, all the ultrasonic transducers of the present application are distributed on the measuring tube body, thereby realizing the measurement of different levels of the fluid flowing through the measuring tube body, thereby optimizing the measurement accuracy of the fluid flow in the ultra-large diameter tube body; secondly, all ultrasonic transducers are located at the end of the measuring tube body, thereby increasing the measurement sound range of the ultrasonic wave and improving the measurement dynamic range of the meter.

[0008] Preferably, the end face of one end of each ultrasonic transducer for transmitting and receiving ultrasonic waves is arranged tilted, and the tilted end faces of two ultrasonic transducers belonging to the same transducer group are arranged facing each other.

[0009] By adopting the above technical solution, the end face tilt setting further increases the ultrasonic measurement sound range, further improves the meter measurement dynamic range, and optimizes the ultrasonic fluid measurement accuracy.

[0010] Preferably, the side walls of the measuring tube body near each ultrasonic transducer are provided with mounting holes, the surface of the ultrasonic transducer is provided with positioning protrusions, the inner wall of the mounting hole is provided with positioning grooves for inserting the positioning protrusions, and the measuring tube body is also provided with a locking assembly for fixing the positioning protrusions in the positioning grooves.

[0011] By adopting the above technical solution, the positioning protrusion and the positioning groove are used to limit the insertion position and insertion angle of the ultrasonic transducer when the ultrasonic transducer is inserted into the mounting hole, so that when the positioning protrusion is inserted into the positioning groove, the two ultrasonic transducers of the corresponding transducer group can be arranged facing each other, thereby ensuring stable transmission and reception of ultrasonic waves.

[0012] Preferably, the locking assembly includes an elastic locking strip, a locking hole is provided on the side wall of the positioning protrusion, and the elastic locking strip is slidably connected to the inner wall of the positioning groove, and the locking hole is located on the sliding path of the elastic locking strip.

[0013] By adopting the above technical solution, after the positioning protrusion is inserted into the positioning hole, the elastic locking strip is slid and one end of the elastic locking strip is inserted into the locking hole, so that the positioning protrusion can be fixed in the positioning hole.

[0014] Preferably, the locking assembly also includes a plurality of docking protrusions, the docking protrusions and the positioning protrusions are arranged circumferentially along the ultrasonic transducer, and the inner wall of the mounting hole is provided with a docking groove for the docking protrusion to be inserted; and there is an elastic locking strip corresponding to any two adjacent docking grooves and between the positioning groove and its adjacent docking groove; each of the elastic locking strips includes two side pieces and a docking elastic piece located between the side pieces, and a locking hole is provided on the side walls of the positioning protrusion and the docking protrusion for the side piece to be inserted, and when the side piece and the docking elastic piece are not deformed, the end of the side piece away from the corresponding docking elastic piece is inserted into the docking groove or the positioning groove, and when the side piece is inserted into the locking hole, the side piece and the docking elastic piece are both in an elastic deformation state.

[0015] By adopting the above-mentioned technical solution, the solution realizes the fixed connection between the positioning protrusion and the positioning hole through the combined action of two methods. The first method is: inserting the side piece into the locking hole to realize limiting. The second method is: utilizing the elastic force of the docking elastic piece and the side piece during elastic deformation to make the side piece stably inserted in the locking hole, and then making the positioning protrusion stably inserted in the positioning hole, realizing convenient and stable locking.

[0016] Preferably, a flexible sealing gasket is further provided in the mounting hole, and the flexible sealing gasket is located between the ultrasonic transducer and the inner wall of the mounting hole, and a through hole is provided on the surface of the flexible sealing gasket for the ultrasonic transducer to pass through; the lower end of the docking elastic sheet extends to the periphery of the flexible sealing gasket along its length direction, and when the docking elastic sheet is not deformed, the docking elastic sheet fits the peripheral wall of the flexible sealing gasket, and when the edge sheet is inserted into the locking hole, the docking elastic sheet bends and deforms in the direction close to the flexible sealing gasket, and presses against the flexible sealing gasket.

[0017] By adopting the above technical solution, when the side piece and the elastic docking piece are not deformed, the end of the side piece away from the elastic docking piece will be inserted into the docking groove or the positioning groove, and when the docking protrusion is inserted into the docking groove and the positioning protrusion is inserted into the positioning groove, the docking protrusion will inevitably squeeze the side piece. At this time, the two side pieces belonging to the same elastic locking strip will squeeze the docking elastic piece together, so that the docking elastic piece bends and deforms in the direction close to the flexible sealing gasket, thereby pressing the flexible sealing gasket, and then making the flexible sealing gasket able to tightly abut the side wall of the ultrasonic transducer, and the present application stipulates that "when the side piece is inserted into the locking hole, the docking elastic piece and the side piece are still in an elastic deformation state", so even after the docking protrusion and the positioning protrusion are installed, the docking elastic piece is always in a state of pressing the flexible sealing gasket, that is, the flexible sealing gasket is always tightly pressed against the surface of the ultrasonic transducer, ultimately improving the sealing effect between the ultrasonic transducer and the mounting hole.

[0018] Preferably, a docking sealing pad is integrally formed on the lower surface of the flexible sealing pad near each docking elastic piece, and a sealing groove for inserting the docking sealing pad is formed on the inner wall of the mounting hole.

[0019] By adopting the above technical solution, the arrangement of the butt sealing gasket and the sealing groove increases the contact area between the flexible sealing gasket and the inner wall of the mounting hole, thereby improving the sealing performance of the flexible sealing gasket at the joint between the mounting hole and the ultrasonic transducer, and the butt sealing gasket and the sealing groove can cooperate with the elastic force of the butt elastic sheet to further improve the sealing performance. Specifically, when the butt elastic sheet squeezes the flexible sealing gasket, the butt sealing gasket will be squeezed and abut against the inner wall of the sealing groove, thereby further improving the sealing performance at the joint between the mounting hole and the ultrasonic transducer by improving the sealing performance of the butt sealing gasket and the sealing groove.

[0020] Preferably, the ultrasonic transducer is connected in the mounting hole by sliding along the depth direction of the mounting hole, and the measuring tube body is provided with a driving member for fixing the sliding position of the ultrasonic transducer.

[0021] By adopting the above technical solution, the two ultrasonic transducers belonging to the same transducer are moved simultaneously, and the two are always kept in a facing state (for example, one moves toward the inside of the measuring tube body, and the other moves away from the measuring tube body). After each sliding distance, the sliding position is fixed by the driving member, which can further increase the measurement level of the fluid, reduce the ultrasonic fluid measurement error, and optimize the measurement accuracy.

[0022] Preferably, a scraper is provided on the inner wall of the measuring tube body near each mounting hole. The scraper is located outside the ultrasonic transducer and fits against the peripheral wall of the ultrasonic transducer.

[0023] By adopting the above technical solution, the fluid flowing through the measuring tube body is likely to come into contact with the surface of the ultrasonic transducer. For fluids containing impurities, the impurities are easily retained and attached to the surface of the ultrasonic transducer, thereby causing resistance to the subsequent flow of the fluid, affecting its flow rate, and even affecting the transmission and reception of ultrasonic waves. Therefore, a scraper is provided to cooperate with the sliding of the ultrasonic transducer to achieve relative movement between the scraper and the ultrasonic circulator, and since the scraper is attached to the surface of the ultrasonic transducer, the scraper can scrape the surface of the ultrasonic transducer during the relative movement of the scraper and the ultrasonic circulator, thereby achieving cleaning of the surface of the ultrasonic transducer.

[0024] Preferably, different numbers of transducer groups generate different ultrasonic wave propagation paths, different numbers of transducer groups can produce different test levels, and the ultrasonic transducers in the transducer groups at different test levels have end faces with different tilt angles.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] The present application uses multiple pairs of ultrasonic transducers that are arranged opposite to each other and evenly distributed on the side cross-section of the measuring pipe body, so as to achieve the measurement of different levels of the measured fluid; and the present application uses a specially designed ultrasonic transducer with an inclined angle on its surface, which can be inserted into the mounting hole through a direction perpendicular to the diameter of the test pipe body and then achieve opposite shooting, and the ultrasonic transducer is defined to be installed at the end of the measuring pipe body, so as to increase the measurement sound path of the ultrasonic wave and improve the measurement dynamic range of the meter; in addition, the wire harnesses of all the ultrasonic transducers located at the same end of the measuring pipe body share a single wire conduit, thus simplifying the layout structure of the ultrasonic transducers as a whole. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of a large-diameter through-type multi-channel ultrasonic fluid measuring device disclosed in Embodiment 1 of the present application.

[0028] Figure 2 is a cross-sectional view taken along the line A-A in Figure 1.

[0029] Figure 3 is a simplified diagram of the arrangement position of the ultrasonic transducers relative to the measuring pipe body when the ultrasonic transducer paths form a "rice" character from the perspective of the end of the measuring pipe body disclosed in Embodiment 1 of the present application.

[0030] Figure 4 is a simplified diagram of the arrangement position of the ultrasonic transducers relative to the measuring pipe body when the ultrasonic transducer paths form a "si" character from the perspective of the end of the measuring pipe body disclosed in other embodiments of the present application.

[0031] Figure 5 is a simplified diagram of the arrangement position of the ultrasonic transducers relative to the measuring pipe body when the ultrasonic transducer paths form a "well" character from the perspective of the end of the measuring pipe body disclosed in other embodiments of the present application.

[0032] Figure 6 is a schematic diagram for showing the positional relationship between the ultrasonic transducer and the mounting hole disclosed in Embodiment 2 of the present application.

[0033] Figure 7 is a schematic diagram for showing the structure of the fixing ring block in Embodiment 2 of the present application.

[0034] Figure 8 is a cross-sectional view for showing the direct positional relationship between the docking protrusion, the positioning protrusion, and the fixing ring block in Embodiment 2 of the present application.

[0035] Figure 9 is a cross-sectional view for showing the positional relationship between the docking elastic strip and the flexible sealing gasket in Embodiment 2 of the present application.

[0036] Figure 10 is a cross-sectional view for showing the positional relationship between the ultrasonic transducer and the mounting hole disclosed in Embodiment 3 of the present application.

[0037] Explanation of the accompanying reference numerals: 1. Measuring tube body; 11. Mounting hole; 111. Sealing groove; 112. Scraper; 12. Threaded hole; 13. Positioning groove; 14. Rubber ring gasket; 15. Cover plate; 16. Flexible sealing gasket; 17. Docking sealing gasket; 18. Fixed ring block; 181. Docking groove; 182. Cavity; 183. Makeway hole; 184. Disassembly port; 191. Elastic locking strip; 1911. Edge piece; 1912. Docking elastic piece; 192. Docking protrusion; 2. Transducer group; 21. Ultrasonic transducer; 211. Insulation layer; 22. Positioning protrusion; 221. Locking hole; 3. Driving part. Implementation Method

[0038] The present application discloses an ultra-large-diameter, straight-through, multi-channel ultrasonic fluid measuring device. As the name suggests, it is suitable for measuring fluids in large-diameter pipes, particularly for ultrasonic water meters with a diameter of DN100 or greater. The ultra-large-diameter, straight-through, multi-channel ultrasonic fluid measuring device described in this application can provide multi-faceted measurements of the measured fluid, and this measurement method is suitable for situations where the measured fluid's flow pattern is extremely susceptible to interference. It reduces measurement errors, improves meter precision, and optimizes measurement accuracy.

[0039] Example 1

[0040] Referring to Figures 1, 2, and 3, an ultra-large-caliber, straight-through, multi-channel ultrasonic fluid measurement device includes a measuring tube 1 and several transducer groups 2 disposed on the measuring tube 1. In Example 1 of the present application, the number of transducer groups 2 is four, and it should be noted that the number of transducer groups 2 can be increased or decreased based on actual testing needs. Specifically, each transducer group 2 includes two ultrasonic transducers 21 disposed opposite each other. The two ultrasonic transducers 21 in the same transducer group 2 are used to transmit and receive ultrasonic waves to each other. The dotted lines in Figures 2 and 3 indicate the ultrasonic propagation path formed between the two ultrasonic transducers 21 in the same transducer group 2. From the perspective of the end of the measuring tube 1 (i.e., when observing the inner wall of the measuring tube from the end of the measuring tube 1 along the measuring tube's axis), the ultrasonic propagation paths generated by all transducer groups 2 in Example 1 of the present application form a "M" shape. By increasing the number of transducer groups 2, the ultrasonic propagation paths can be increased, enabling multi-dimensional measurement of the fluid and improving measurement accuracy.

[0041] The shape formed by the ultrasonic propagation path is not limited to the "rice" shape. When initially opening the installation holes 11, the position of the installation holes 11 and the inclination angle of the installation holes 11 relative to the radial direction of the measuring pipe body 1 can be designed artificially to ensure that the two ultrasonic transducers of the same transducer group 2 are arranged facing each other. For example, when opening the installation holes 11, adjust the opening direction of the installation holes 11 relative to the measuring pipe body 1, and then determine the positions of the two ultrasonic transducers of the same transducer group 2, and always ensure that the two ultrasonic transducers of the same transducer group 2 are arranged facing each other. Correspondingly, in other embodiments, the ultrasonic propagation path from the perspective of the end of the measuring pipe body 1 can also be designed into the "si" shape shown in FIG. 4 or the "well" shape shown in FIG. 5.

[0042] Referring to FIGS. 1 and 2, threaded holes 12 for connecting flange plates are provided at the end of the measuring pipe body 1 for connecting the measuring pipe body 1 to other pipes through flanges, so that the fluid (such as water) in other pipes flows through the measuring pipe body 1, and the flow rate of the fluid is detected by the transducer group 2. The flow rate detection technology of the ultrasonic transducer 21 is a prior art and will not be elaborated here.

[0043] Referring to FIGS. 1 and 3, all ultrasonic transducers 21 are evenly distributed at the end of the measuring pipe body 1. The two ultrasonic transducers 21 belonging to the same transducer group 2 are arranged at different ends of the measuring pipe body 1, and all the ultrasonic probes at the same end of the measuring pipe body 1 share a threading pipe, making the overall structure of the ultrasonic fluid testing device simpler and more reliable; in other embodiments, a traditional threading method can also be adopted, that is, each ultrasonic transducer 21 corresponds to a threading pipe. From the perspective of the end of the measuring pipe body 1, all ultrasonic transducers 21 are evenly distributed along the circumferential direction of the measuring pipe body 1. The above position limiting scheme for the ultrasonic transducers 21 can not only increase the acoustic path of the ultrasonic signal and improve the dynamic range of the meter measurement, but also enable the speed of the measured fluid to be measured at different levels even when the measured fluid is disturbed, thus significantly improving the measurement accuracy and measurement stability.

[0044] Referring to FIG. 2, an installation hole 11 for inserting the ultrasonic transducer 21 is penetrated through the side wall of the measuring pipe body 1 near the end, and the depth direction of the installation hole 11 has no intersection with the depth direction of any threaded hole 12 on the measuring pipe body 1 closest to it, that is, the installation position of the ultrasonic transducer 21 avoids the depth direction of the threaded hole 12 to prevent the ultrasonic transducer 21 from hindering the installation of the bolt in the threaded hole 12.

[0045] 2 and 3 , the mounting holes 11 and the ultrasonic transducers 21 are arranged in a one-to-one correspondence. The detection end of the ultrasonic transducer 21 passes through the mounting hole 11 and is located inside the measuring tube body 1 . The end face of the detection end of the ultrasonic transducer 21 is arranged at an angle. In order to enable the detection ends of the two ultrasonic transducers 21 belonging to the same transducer group 2 to be arranged facing each other, thereby ensuring the smooth transmission and reception of ultrasonic signals, a positioning protrusion 22 is provided at the other end of the ultrasonic transducer 21 . Correspondingly, a positioning groove 13 is provided on the inner wall of the mounting hole 11 for inserting the positioning protrusion 22 . When the ultrasonic transducer 21 is installed in the corresponding mounting hole 11 and the positioning protrusion 22 is inserted in the positioning groove 13 , the detection ends of the two ultrasonic transducers 21 belonging to the same transducer group 2 are arranged facing each other.

[0046] 2 , a rubber ring gasket 14 is inserted into the inner wall of the mounting hole 11. The detection end of the ultrasonic transducer 21 can pass through the rubber ring gasket 14. When the ultrasonic transducer 21 is inserted into the mounting hole 11, the rubber ring gasket 14 is located between the mounting hole 11 and the ultrasonic transducer 21. The rubber ring gasket 14 is also attached to the inner wall of the mounting hole 11 and the surrounding wall of the ultrasonic transducer 21 to achieve a seal at the joint between the mounting hole 11 and the ultrasonic transducer 21. In addition, a cover plate 15 is threadedly connected to the inner wall of the opening of each mounting hole 11. The cover plate 15 can be screwed with an external tool to cover the opening of the mounting hole 11. The cover plate 15 is pressed against the end of the ultrasonic transducer 21 through the cover plate 15, so that the positioning protrusion 22 on the ultrasonic transducer 21 is fixedly inserted into the positioning groove 13, thereby achieving fixed installation of the ultrasonic transducer 21.

[0047] The implementation principle of an ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device in Example 1 of the present application is as follows: an ultrasonic transducer 21 is installed in a corresponding mounting hole 11, and a positioning protrusion 22 is inserted into a positioning groove 13, so as to ensure that the detection ends of the two ultrasonic transducers 21 belonging to the same transducer group 2 can be arranged facing each other; then the measuring tube body 1 is connected to the pipeline through a flange. Thereafter, when the fluid in the pipeline flows through the measuring tube body 1, an external controller (such as a PLC controller) controls each transducer group 2 to start and realize ultrasonic transmission and reception in sequence according to a preset order, so as to realize detection of different levels of the fluid to be measured; thereafter, the controller can calculate the flow velocity and flow rate of the fluid to be measured based on the ultrasonic transmission and reception, and send the calculation results to the tester's smart terminal so that the tester can know the calculation results.

[0048] Example 2

[0049] The only difference between Example 2 of the present application and Example 1 is the installation method of the ultrasonic transducer 21 and the corresponding mounting hole 11. Specifically, referring to Figures 4 and 5, a flexible sealing gasket 16 is inserted into the inner wall of the mounting hole 11. The flexible sealing gasket 16 can be made of rubber. A through hole is opened in the middle of the flexible sealing gasket 16 for the detection end of the ultrasonic transducer 21 to pass through.

[0050] Referring to Figures 6, 7, and 8, a fixing ring block 18 is also inserted into the mounting hole 11. The fixing ring block 18 is detachably connected to the inner wall of the mounting hole 11 and is located outside the flexible sealing gasket 16 and fits against the peripheral wall of the flexible sealing gasket 16. A positioning groove 13 for inserting the positioning protrusion 22 is provided on the upper surface of the fixing ring block 18. The measuring tube body 1 is provided with a locking assembly near each mounting hole 11. The locking assembly is used to fix the positioning protrusion 22 in the positioning groove 13. Specifically, the locking assembly includes an elastic locking strip 191 and a plurality of docking protrusions 192. The docking protrusions 192 are provided on the peripheral wall of the ultrasonic transducer 21, and the positioning protrusion 22 and all docking protrusions 192 are evenly arranged along the circumference of the ultrasonic transducer 21. Correspondingly, a plurality of docking grooves 181 are further provided on the upper surface of the fixing ring block 18 . The docking grooves 181 are arranged in one-to-one correspondence with the docking protrusions 192 , and the docking protrusions 192 can be inserted into the corresponding docking grooves 181 .

[0051] Referring to Figures 6 and 7, a cavity 182 is defined within the fixing ring block 18, which communicates with the sealing groove 111 and the positioning groove 13. An elastic locking strip 191 is located within the cavity 182, and one elastic locking strip 191 corresponds to each of two adjacent docking grooves 181, and between a positioning groove 13 and its adjacent docking groove 181. Each elastic locking strip 191 includes two elastic side pieces 1911 and a docking elastic piece 1912 located between the two side pieces 1911. In this embodiment, both the side pieces 1911 and the docking elastic piece 1912 are arc-shaped, and the docking elastic piece 1912 protrudes toward the center of the fixing ring block 18. The side walls of the docking protrusion 192 and the positioning protrusion 22 are defined with locking holes 221 for inserting the side pieces 1911.

[0052] When the docking protrusion 192 and / or the positioning protrusion 22 are not inserted into the corresponding mounting hole 11, the elastic locking strip 191 is in an undeformed state. At this time, the end of the side piece 1911 away from the docking elastic piece 1912 is inserted into the docking groove 181 or the positioning groove 13. When the docking protrusion 192 is inserted into the docking groove 181 and the positioning protrusion 22 is inserted into the positioning groove 13, the side piece 1911 is pressed by the docking protrusion 192 or the positioning protrusion 22 and retracts into the cavity 182, and deforms and squeezes the docking elastic piece 1912. When the docking protrusion 192 is completely inserted into the docking groove 181, the side piece 1911 is pressed by the docking protrusion 192 or the positioning protrusion 22 and retracts into the cavity 182, and deforms and squeezes the docking elastic piece 1912. When the docking groove 181 is inserted and the positioning protrusion 22 is fully inserted into the positioning groove 13, the end of the side piece 1911 is reinserted into the docking groove 181 or the positioning groove 13 under the action of elasticity, and inserted into the corresponding locking hole 221. When the end of the side piece 1911 is inserted into the locking hole 221, the side piece 1911 and the docking elastic piece 1912 are still in an elastic deformation state, that is, the end wall of the side piece 1911 abuts against the inner wall of the locking hole 221, so as to achieve a fixed connection between the positioning protrusion 22 and the inner wall of the positioning groove 13 through the mutual cooperation of plug-in and elastic force.

[0053] In addition, in order to facilitate the removal of the ultrasonic transducer 21 from the mounting hole 11, the fixing ring block 18 in this embodiment is provided with a disassembly opening 184 on the upper surface near each elastic locking strip 191, and the inner wall of the disassembly opening 184 is rotatably connected to a flap for opening and closing the disassembly opening 184, and the disassembly opening 184 is connected to the cavity 182; when it is necessary to disengage the positioning protrusion 22 from the positioning groove 13, the disassembly opening 184 can be opened by rotating the flap in the direction away from the disassembly opening 184, and the hand or external tool can be used to reach into the cavity 182, and then the elastic locking strip 191 can be squeezed to make the elastic locking strip 191 completely retract into the cavity 182, so that the side piece 1911 is disengaged from the locking hole 221, and finally the positioning protrusion 22 is disengaged from the positioning groove 13, and the docking protrusion 192 is disengaged from the docking groove 181.

[0054] 7 and 9 , the lower end of the docking elastic sheet 1912 passes through the cavity 182 and extends downward to the periphery of the flexible sealing pad 16, and a clearance hole 183 is opened through the inner wall of the fixing ring block 18 near each docking elastic sheet 1912; when the docking elastic sheet 1912 is not deformed, the lower end of the docking elastic sheet 1912 passes through the clearance hole 183 and fits against the peripheral wall of the flexible sealing pad 16; when the docking elastic sheet 1912 is squeezed and deformed by the side sheet 1911, the docking elastic sheet 1912 bends and deforms in the direction close to the flexible sealing pad 16, and squeezes the flexible sealing pad 16, so that the flexible sealing pad 16 abuts against the peripheral wall of the ultrasonic transducer 21, thereby optimizing the sealing effect.

[0055] In addition, a docking seal 17 is integrally formed at the bottom of the flexible sealing gasket 16, and a sealing groove 111 is provided on the bottom wall of the mounting hole 11 for inserting the docking seal 17. Furthermore, the present application stipulates that the sealing grooves 111 are arranged in a one-to-one correspondence with the clearance holes 183, and the sealing grooves 111 are located exactly at a position of the mounting hole 11 close to the corresponding clearance hole 183, and the depth direction of the sealing grooves 111 is perpendicular to the direction in which the docking elastic sheet 1912 squeezes the flexible sealing gasket 16. When the docking elastic sheet 1912 squeezes the flexible sealing gasket 16, the docking seal 17 will be squeezed and pressed against the inner wall of the sealing groove 111, thereby improving the tightness of the connection between the flexible sealing gasket 16 and the inner wall of the mounting hole 11, and optimizing the sealing performance of the flexible sealing gasket 16 at the joint between the mounting hole 11 and the ultrasonic transducer 21.

[0056] Example 3

[0057] The difference between Example 3 of the present application and Example 1 is that: referring to Figure 10, the ultrasonic transducer 21 is connected to the mounting hole 11 by sliding along the depth direction of the corresponding mounting hole 11, and a driving member 3 is provided on the measuring tube body 1 to drive the ultrasonic transducer 21 to slide and fix the sliding position. Specifically, the driving member 3 can be a combination structure of a motor and a mini screw. By fixing the motor driving end to the end of the mini screw, the mini screw is threadedly connected to the peripheral wall of the ultrasonic transducer 21, and ensuring that the length direction of the mini screw is parallel to the depth direction of the mounting hole 11, so that when the mini screw rotates, it drives the ultrasonic transducer 21 to slide along the depth direction of the hole. The motor can be controlled by a preset controller, and the controller controls the two ultrasonic transducers 21 of the same transducer group 2 to move a specified distance and then stop. It should be noted that the moving strokes of the two ultrasonic transducers 21 of the same transducer group 2 are the same, and when one of the ultrasonic transducers 21 moves toward the middle of the measuring tube body 1, the other ultrasonic transducer 21 will move away from the middle of the measuring tube body 1 to ensure the smooth transmission and reception of ultrasonic signals between the two ultrasonic transducers 21 of the same transducer group 2. By controlling the movement of the ultrasonic transducer 21, the installation position of the ultrasonic transducer 21 can be adjusted, thereby further increasing the measurement level of the fluid and improving the comprehensiveness of the measurement.

[0058] The surface of the ultrasonic transducer 21 is also provided with an insulation layer 211, which is made of an insulation material, such as an insulation metal material; a scraper 112 is also installed on the inner wall of the measuring tube body 1 near each mounting hole 11. When the ultrasonic transducer 21 is inserted into the corresponding mounting hole 11, the scraper 112 is sleeved on the outer periphery of the ultrasonic transducer 21 and fits with the surrounding wall of the ultrasonic transducer 21. It is used to scrape the surrounding wall of the ultrasonic transducer 21 when the ultrasonic transducer 21 slides relative to the depth direction of the mounting hole 11, thereby reducing the accumulation of dirt on the surface of the ultrasonic transducer 21.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device, comprising a measuring tube (1), characterized in that: The measuring tube body (1) is provided with a plurality of transducer groups (2), each of the transducer groups (2) includes two ultrasonic transducers (21) arranged opposite to each other, and the ultrasonic transducers (21) are arranged at the end of the measuring tube body (1), and the two ultrasonic transducers (21) in the same transducer group (2) are located at different ends of the measuring tube body (1); and from the perspective of the end of the measuring tube body (1), all the ultrasonic transducers (21) are distributed along the circumference of the measuring tube body (1); The measuring tube body (1) is provided with a mounting hole (11) on a side wall near each ultrasonic transducer (21), the mounting hole (11) is provided along the radial direction of the measuring tube body (1), the ultrasonic transducer (21) is inserted into the mounting hole (11) along the hole depth direction of the mounting hole (11), the surface of the ultrasonic transducer (21) is provided with a positioning protrusion (22), the inner wall of the mounting hole (11) is provided with a positioning groove (13) for inserting the positioning protrusion (22), and the measuring tube body (1) is also provided with a locking component for fixing the positioning protrusion (22) into the positioning groove (13); The locking assembly includes an elastic locking strip (191), a locking hole (221) is provided on the side wall of the positioning protrusion (22), and the elastic locking strip (191) is slidably connected to the inner wall of the positioning groove (13), and the locking hole (221) is located on the sliding path of the elastic locking strip (191).

2. The ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device according to claim 1, characterized in that: The end face of one end of each ultrasonic transducer (21) for transmitting and receiving ultrasonic waves is arranged tilted, and the tilted end faces of two ultrasonic transducers (21) belonging to the same transducer group (2) are arranged facing each other.

3. The ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device according to claim 1, characterized in that: The locking assembly further comprises a plurality of docking protrusions (192), the docking protrusions (192) and the positioning protrusions (22) are arranged along the circumference of the ultrasonic transducer (21), and the inner wall of the mounting hole (11) is provided with a docking groove (181) for the docking protrusions (192) to be inserted; and an elastic locking strip (191) corresponds to each of any two adjacent docking grooves (181) and between the positioning groove (13) and its adjacent docking groove (181); each of the elastic locking strips (191) comprises two side pieces (1911) and a side piece (1911) located between the side pieces (1911). The side piece (1911) is provided with a docking elastic piece (1912) between the positioning protrusion (22) and the docking protrusion (192), and a locking hole (221) is provided on the side wall of the positioning protrusion (22) and the docking protrusion (192) for inserting the side piece (1911). When the side piece (1911) and the docking elastic piece (1912) are not deformed, one end of the side piece (1911) away from the corresponding docking elastic piece (1912) is inserted into the docking groove (181) or the positioning groove (13). When the side piece (1911) is inserted into the locking hole (221), the side piece (1911) and the docking elastic piece (1912) are both in an elastically deformed state.

4. The ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device according to claim 3, characterized in that: A flexible sealing gasket (16) is also provided in the mounting hole (11), and the flexible sealing gasket (16) is located between the ultrasonic transducer (21) and the inner wall of the mounting hole (11), and a through hole is provided on the surface of the flexible sealing gasket (16) for the ultrasonic transducer (21) to pass through; the lower end of the docking elastic sheet (1912) extends to the periphery of the flexible sealing gasket (16) along its length direction, and when the docking elastic sheet (1912) is not deformed, the docking elastic sheet (1912) fits the peripheral wall of the flexible sealing gasket (16); when the edge sheet (1911) is inserted into the locking hole (221), the docking elastic sheet (1912) bends and deforms in a direction close to the flexible sealing gasket (16), and presses against the flexible sealing gasket (16).

5. The ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device according to claim 4, characterized in that: The lower surface of the flexible sealing pad (16) near each docking elastic piece (1912) is also integrally formed with a docking sealing pad (17), and the inner wall of the mounting hole (11) is provided with a sealing groove (111) for inserting the docking sealing pad (17).

6. The ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device according to claim 1, characterized in that: The ultrasonic transducer (21) is connected to the mounting hole (11) by sliding along the depth direction of the mounting hole (11), and a driving member (3) for fixing the sliding position of the ultrasonic transducer (21) is provided on the measuring tube body (1).

7. The ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device according to claim 6, characterized in that: A scraper (112) is provided on the inner wall of the measuring tube body (1) near each mounting hole (11); the scraper (112) is located outside the ultrasonic transducer (21) and fits the peripheral wall of the ultrasonic transducer (21).

8. The ultra-large-caliber straight-through multi-channel ultrasonic fluid measuring device according to claim 2, characterized in that: Different numbers of transducer groups (2) generate different ultrasonic propagation paths, and different numbers of transducer groups (2) can generate different test levels. The ultrasonic transducers (21) in the transducer groups (2) at different test levels have end faces with different tilt angles.

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