CN118067209B - Ultra-large-diameter straight-through type multichannel ultrasonic fluid measuring device - Google Patents
Ultra-large-diameter straight-through type multichannel ultrasonic fluid measuring device Download PDFInfo
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- CN118067209B CN118067209B CN202410337581.1A CN202410337581A CN118067209B CN 118067209 B CN118067209 B CN 118067209B CN 202410337581 A CN202410337581 A CN 202410337581A CN 118067209 B CN118067209 B CN 118067209B
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- 239000012530 fluid Substances 0.000 title claims abstract description 50
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 210000001503 joint Anatomy 0.000 claims description 57
- 238000007789 sealing Methods 0.000 claims description 55
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 238000007790 scraping Methods 0.000 claims description 6
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 11
- 238000003032 molecular docking Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
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- Measuring Volume Flow (AREA)
Abstract
The application relates to an ultra-large caliber straight-through type multichannel ultrasonic fluid measurement device, which relates to the technical field of fluid flow measurement; the ultrasonic transducer comprises a measuring tube body, wherein a plurality of transducer groups are arranged on the measuring tube body, each transducer group comprises two ultrasonic transducers which are oppositely arranged, the ultrasonic transducers are arranged at the end part of the measuring tube body, and two ultrasonic transducers in the same transducer group are positioned at different ends of the measuring tube body; and all the ultrasonic transducers are distributed along the circumferential direction of the measuring pipe body under the end view angle of the measuring pipe body; the application has the effect of improving the measurement accuracy of the fluid flow in the ultra-large caliber pipe body.
Description
Technical Field
The application relates to the technical field of fluid flow metering, in particular to an ultra-large caliber straight-through type multichannel ultrasonic fluid measuring device.
Background
The ultrasonic fluid measurement device may specifically be an ultrasonic flowmeter, which uses ultrasonic transducers arranged in pairs to transmit and receive ultrasonic waves alternately (or simultaneously) in opposite directions (i.e. form a measurement channel), indirectly measures the flow velocity of fluid by observing the time difference of the ultrasonic waves propagating in the fluid medium under the condition of forward flow or backward flow, and calculates the flow through the flow velocity.
Specifically, the ultrasonic fluid measuring device generally comprises a measuring tube body and transducers, wherein the measuring tube body is installed on a water pipe through a flange and other fixing components, the side walls of the measuring tube body are penetrated and provided with mounting holes, the transducers are arranged in pairs, the transducers are fixedly inserted into the mounting holes, and the detection ends of the two transducers arranged in pairs are oppositely arranged so as to be convenient for receiving and transmitting ultrasonic waves.
However, for the ultra-large caliber (usually referred to as DN200 or more) straight-through type ultrasonic fluid metering device, the flow state in the tube is extremely easy to be disturbed (such as the influence of a bent tube, the influence of a valve, unstable flow and the like) due to the large caliber, so that the flow velocity of different areas in the tube is unstable, while the measuring sound channel of the traditional ultrasonic fluid measuring device (such as the existing ultra-large caliber measuring device for D400 and X type single-layer surface sampling) is single, so that the problems of large measuring error and poor precision are extremely easy to be influenced by the front and back bent tube, the valve and the like.
Disclosure of Invention
In order to improve the measurement accuracy of the fluid flow in the ultra-large caliber pipe body, the application provides an ultra-large caliber straight-through type multichannel ultrasonic fluid measurement device.
The application provides an ultra-large-aperture straight-through type multichannel ultrasonic fluid measuring device, which comprises a measuring tube body, wherein a plurality of transducer groups are arranged on the measuring tube body, each transducer group comprises two ultrasonic transducers which are oppositely arranged, the ultrasonic transducers are arranged at the end part of the measuring tube body, and two ultrasonic transducers in the same transducer group are positioned at different ends of the measuring tube body; and all the ultrasonic transducers are distributed along the circumferential direction of the measuring pipe body under the end view angle of the measuring pipe body.
By adopting the technical scheme, firstly, a plurality of transducer groups are arranged, each transducer group comprises a pair of mutually opposite ultrasonic transducers, and in addition, when the ultrasonic transducers are seen from the end part of the measuring pipe body, all the ultrasonic transducers are distributed on the measuring pipe body, so that the measurement of different layers of fluid flowing in the measuring pipe body is realized, and the measurement accuracy of the fluid flow in the ultra-large-caliber pipe body is optimized; and secondly, all ultrasonic transducers are positioned at the end part of the measuring tube body, so that the measuring sound path of ultrasonic waves is increased, and the measuring dynamic range of the meter is improved.
Preferably, each of the ultrasonic transducers is configured to transmit and receive ultrasonic waves, and one end face of each of the ultrasonic transducers is obliquely arranged, and the oblique end faces of the two ultrasonic transducers belonging to the same transducer group are oppositely arranged.
By adopting the technical scheme, the end face inclined arrangement further increases the measuring sound path of ultrasonic waves, further improves the measuring dynamic range of the meter, and optimizes the measuring accuracy of ultrasonic fluid.
Preferably, the side wall of the measuring tube body, which is close to each ultrasonic transducer, is provided with a mounting hole, the surface of the ultrasonic transducer is provided with a positioning protrusion, the inner wall of the mounting hole is provided with a positioning groove for inserting the positioning protrusion, and the measuring tube body is also provided with a locking component for fixedly inserting the positioning protrusion into the positioning groove.
Through adopting above-mentioned technical scheme, the setting of location arch and constant head tank is used for when ultrasonic transducer inserts in the mounting hole, and the position of inserting of inject the ultrasonic transducer and insert and establish the angle to when the location arch inserts in the constant head tank, two ultrasonic transducer that belongs to a transducer group can set up in opposite directions, thereby ensures the stable transceiver of ultrasonic wave.
Preferably, the locking assembly comprises an elastic locking strip, a locking hole is formed in the side wall of the positioning protrusion, the elastic locking strip is connected to the inner wall of the positioning groove in a sliding mode, and the locking hole is located on the sliding path of the elastic locking strip.
By adopting the technical scheme, after the positioning bulge is inserted into the positioning hole, the elastic locking strip slides and one end of the elastic locking strip is inserted into the locking hole, so that the positioning bulge can be fixed in the positioning hole.
Preferably, the locking assembly further comprises a plurality of butt joint protrusions, the butt joint protrusions and the positioning protrusions are circumferentially distributed along the ultrasonic transducer, and butt joint grooves for inserting the butt joint protrusions are formed in the inner wall of the mounting hole; and an elastic locking strip is respectively corresponding to the space between any two adjacent butt joint grooves and the space between the positioning groove and the adjacent butt joint groove; each elastic locking strip comprises two edge pieces and a butt joint elastic piece located between the edge pieces, the locking holes are formed in the side walls of the positioning protrusions and the butt joint protrusions, the edge pieces are used for being inserted, when the edge pieces and the butt joint elastic pieces are not deformed, one ends, away from the corresponding butt joint elastic pieces, of the edge pieces are inserted into the butt joint grooves or the positioning grooves, and when the edge pieces are inserted into the locking holes, the edge pieces and the butt joint elastic pieces are in elastic deformation states.
Through adopting above-mentioned technical scheme, this scheme realizes the fixed connection to location arch and locating hole through the coaction of two modes, and mode one is: the edge piece is inserted into the locking hole to realize limit, and the second mode is as follows: the elastic force of the butt joint elastic piece and the edge piece during elastic deformation is utilized to enable the edge piece to be stably inserted into the locking hole, and then the positioning protrusion is stably inserted into the positioning hole, so that convenient and stable locking is realized.
Preferably, a flexible sealing gasket is further arranged in the mounting hole, the flexible sealing gasket is positioned between the ultrasonic transducer and the inner wall of the mounting hole, and a through hole for the ultrasonic transducer to penetrate is formed in the surface of the flexible sealing gasket; the lower end of the abutting elastic piece extends to the periphery of the flexible sealing gasket along the length direction of the abutting elastic piece, when the abutting elastic piece is not deformed, the abutting elastic piece is attached to the peripheral wall of the flexible sealing gasket, and when the edge piece is inserted into the locking hole, the abutting elastic piece is bent and deformed towards the direction close to the flexible sealing gasket and is abutted against the flexible sealing gasket.
By adopting the technical scheme, when the edge piece and the elastic butt joint piece are not deformed, one end of the edge piece, which is far away from the elastic butt joint piece, is inserted into the butt joint groove or the positioning groove, and when the butt joint protrusion is inserted into the butt joint groove and the positioning protrusion is inserted into the positioning groove, the butt joint protrusion is bound to squeeze the edge piece, at the moment, the two edge pieces which belong to the same elastic locking strip are bound to squeeze the butt joint elastic piece together, so that the butt joint elastic piece bends and deforms towards the direction close to the flexible sealing gasket, and the flexible sealing gasket is propped against the side wall of the ultrasonic transducer, and then the flexible sealing gasket can be tightly propped against the side wall of the ultrasonic transducer.
Preferably, the flexible sealing gasket is further integrally formed on the lower surface of the flexible sealing gasket, which is close to each butt joint elastic piece, and a sealing groove for inserting the butt joint sealing gasket is formed in the inner wall of the mounting hole.
Through adopting above-mentioned technical scheme, the setting of butt joint sealing pad and seal groove has increased the area of contact between flexible sealing pad and the mounting hole inner wall, improves the leakproofness of flexible sealing pad to mounting hole and ultrasonic transducer seam crossing, and this butt joint sealing pad and seal groove can cooperate the elastic force of butt joint elastic piece, further improves the leakproofness, and specifically, when the flexible sealing pad of butt joint elastic piece extrusion, the butt joint sealing pad will receive the extrusion and butt in the seal groove inner wall, through improving the leakproofness of butt joint sealing pad and seal groove, further improves the leakproofness of mounting hole and ultrasonic transducer seam crossing.
Preferably, the ultrasonic transducer is slidingly connected in the mounting hole along the depth direction of the mounting hole, and a driving piece for fixing the sliding position of the ultrasonic transducer is arranged on the measuring tube body.
Through adopting above-mentioned technical scheme, remove two ultrasonic transducer that belong to same transducer simultaneously, and keep both to be in correlation state all the time (if one of them moves towards the direction that is close to the measuring tube body inside, and another moves towards the direction that is far away from the measuring tube body), this position of sliding is fixed through the driving piece after every time sliding a certain distance, can further increase the measuring level to the fluidic through this, reduces ultrasonic fluid measuring error, optimizes the measurement accuracy.
Preferably, the inner wall of the measuring tube body, which is close to each mounting hole, is provided with a scraping blade, and the scraping blade is positioned at the periphery of the ultrasonic transducer and is attached to the peripheral wall of the ultrasonic transducer.
Through adopting above-mentioned technical scheme, the fluid that flows through in the survey buret body most probable can be contacted with the ultrasonic transducer surface, to the fluid that contains the area impurity, wherein impurity is easy to be detained and is attached to the ultrasonic transducer surface, and then to the flow of follow-up fluid cause resistance, influence its velocity of flow, influence ultrasonic transceiver even, consequently through setting up the sliding of doctor-bar cooperation ultrasonic transducer, with realization doctor-bar and ultrasonic ring can ware relative movement, and because the doctor-bar laminating is in the ultrasonic transducer surface, therefore the doctor-bar can be at the in-process of doctor-bar and ultrasonic ring can ware relative movement, scratch the ultrasonic transducer surface through the doctor-bar, realize the cleanness to the ultrasonic transducer surface.
In summary, the present application includes at least one of the following beneficial technical effects:
the application adopts a plurality of pairs of ultrasonic transducers which are mutually opposite and uniformly distributed on the side section of the measuring tube body, thereby realizing the measurement of different layers of the measured fluid; the ultrasonic transducer is specially designed, the surface of the ultrasonic transducer is provided with an inclined angle, so that the ultrasonic transducer can be inserted into the mounting hole in a direction perpendicular to the pipe diameter of the test pipe body to realize correlation, and the ultrasonic transducer is limited to be mounted at the end part of the test pipe body, thereby increasing the measuring sound path of ultrasonic waves and improving the measuring dynamic range of the meter; in addition, the wiring harness of all the ultrasonic transducers positioned at the same end of the measuring tube body shares one wiring tube, so that the arrangement structure of the ultrasonic transducers is simplified as a whole.
Drawings
Fig. 1 is a schematic structural view of an ultra-large-aperture straight-through type multi-channel ultrasonic fluid measurement device disclosed in embodiment 1 of the present application.
Fig. 2 is a cross-sectional view taken along A-A in fig. 1.
Fig. 3 is a simplified diagram of the arrangement position of the ultrasonic transducer relative to the measuring tube body when the ultrasonic transducer path forms a "meter" shape under the end view of the measuring tube body according to embodiment 1 of the present application.
Fig. 4 is a simplified diagram of an arrangement position of an ultrasonic transducer relative to a measuring tube body when the ultrasonic transducer path forms a figure ' under a view angle of an end portion of the measuring tube body according to another embodiment of the present application.
Fig. 5 is a simplified diagram of the arrangement position of the ultrasonic transducer relative to the measuring tube body when the ultrasonic transducer path forms a "well" shape under the end view of the measuring tube body according to another embodiment of the present application.
Fig. 6 is a schematic diagram showing the positional relationship between an ultrasonic transducer and a mounting hole as disclosed in embodiment 2 of the present application.
Fig. 7 is a schematic view for embodying the structure of the fixed ring block in embodiment 2 of the present application.
Fig. 8 is a cross-sectional view for embodying the direct positional relationship of the abutment projection, the positioning projection and the fixing ring block in embodiment 2 of the present application.
Fig. 9 is a cross-sectional view for embodying the positional relationship between the butted elastic strip and the flexible gasket in embodiment 2 of the present application.
Fig. 10 is a sectional view for embodying the positional relationship between an ultrasonic transducer and a mounting hole disclosed in embodiment 3 of the present application.
Reference numerals illustrate: 1. a measuring tube body; 11. a mounting hole; 111. sealing grooves; 112. a wiper blade; 12. a threaded hole; 13. a positioning groove; 14. a rubber ring pad; 15. a cover plate; 16. a flexible gasket; 17. a butt joint sealing gasket; 18. a fixed ring block; 181. a butt joint groove; 182. a cavity; 183. a relief hole; 184. a disassembly port; 191. an elastic locking bar; 1911. edge pieces; 1912. abutting the elastic sheet; 192. butt joint bulges; 2. a transducer group; 21. an ultrasonic transducer; 211. a thermal insulation layer; 22. positioning the bulge; 221. a locking hole; 3. a driving member.
Detailed Description
The embodiment of the application discloses an ultra-large-caliber straight-through type multichannel ultrasonic fluid measurement device which is applicable to measuring fluid in a large-caliber pipeline, in particular to an ultrasonic water meter with the caliber of more than or equal to DN100 as the name implies. The ultra-large-aperture straight-through type multichannel ultrasonic fluid measuring device can provide multi-layer measurement for the fluid to be measured, and the measuring mode is suitable for the condition that the fluid state of the fluid to be measured is extremely easy to interfere; the method has the effects of reducing measurement errors, improving meter accuracy and optimizing measurement accuracy.
Example 1
Referring to fig. 1,2 and 3, the ultra-large-aperture straight-through type multi-channel ultrasonic fluid measuring device comprises a measuring tube body 1, and a plurality of groups of transducer groups 2 arranged on the measuring tube body 1. In embodiment 1 of the present application, the number of transducer groups 2 is 4, and it should be noted that the number of transducer groups 2 may be increased or decreased according to the actual test requirement. Specifically, each transducer group 2 includes two ultrasonic transducers 21 disposed in opposite directions, and the two ultrasonic transducers 21 of the same transducer group 2 are used for mutually receiving and transmitting ultrasonic waves, and the dashed lines in fig. 2 and 3 are as follows: the ultrasonic wave propagation paths formed between the two ultrasonic transducers 21 belonging to the same transducer group 2 are formed in a shape of a Chinese character 'mi' in the end view of the measuring tube body 1 (i.e. when the inner wall of the measuring tube body is observed along the axis direction of the measuring tube body from the end of the measuring tube body 1), and the ultrasonic wave propagation paths generated by all the transducer groups 2 in the embodiment 1 of the present application are formed in a shape of a Chinese character 'mi'. The ultrasonic wave propagation paths can be increased by increasing the number of the transducer groups 2, so that multi-layer measurement of fluid is realized, and the measurement accuracy is improved.
The form of the ultrasonic propagation path is not limited to the "m" shape, and the position of the mounting hole 11 and the inclination angle of the mounting hole 11 with respect to the radial direction of the measuring tube body 1 may be designed in advance by a person when the mounting hole 11 is first opened, so that two ultrasonic transducers of the same transducer group 2 are ensured to be disposed in opposition. If the mounting hole 11 is formed, the forming direction of the mounting hole 11 relative to the measuring tube 1 is adjusted, and then the positions of the two ultrasonic transducers of the same transducer group 2 are determined, and the two ultrasonic transducers of the same transducer group 2 are always ensured to be arranged in opposite directions. Accordingly, in other embodiments, the ultrasonic propagation path at the end view of the measuring pipe body 1 can also be designed in a " " shape as shown in fig. 4 or in a "well" shape as shown in fig. 5.
Referring to fig. 1 and 2, the end of the measuring tube body 1 is provided with a threaded hole 12 for connecting with a flange, so that the connecting between the measuring tube body 1 and other pipelines is realized through the flange, so that the fluid (such as water) in other pipelines flows through the measuring tube body 1, and the flow detection of the fluid is realized through the transducer group 2, and the flow detection technology of the ultrasonic transducer 21 is the prior art and will not be repeated here.
Referring to fig. 1 and 3, all the ultrasonic transducers 21 are uniformly distributed at the end of the measuring tube body 1, two ultrasonic transducers 21 of the same transducer group 2 are respectively arranged at different ends of the measuring tube body 1, and all the ultrasonic probes at the same end of the measuring tube body 1 share one threading tube, so that the whole structure of the ultrasonic fluid testing device is simpler and more reliable; in other embodiments, conventional threading may be used, i.e., one threading tube for each ultrasonic transducer 21. At the end view of the measuring tube body 1, all the ultrasonic transducers 21 are uniformly distributed along the circumferential direction of the measuring tube body 1. The above-mentioned position limiting scheme related to the ultrasonic transducer 21 not only can increase the sound path of the ultrasonic signal and improve the dynamic range of meter measurement, but also can make the measured fluid measured at different layers to obviously improve the measurement progress and measurement stability under the condition that the measured fluid is disturbed.
Referring to fig. 2, the side wall of the measuring tube body 1 near the end portion is penetrated and provided with a mounting hole 11 for inserting the ultrasonic transducer 21, and the hole depth direction of the mounting hole 11 is not intersected with the hole depth direction of any threaded hole 12 on the measuring tube body 1 nearest to the mounting hole, i.e. the mounting position of the ultrasonic transducer 21 avoids the hole depth direction of the threaded hole 12, so that the ultrasonic transducer 21 is prevented from obstructing the mounting of bolts into the threaded hole 12.
Referring to fig. 2 and 3, the mounting holes 11 are arranged in a one-to-one correspondence with the ultrasonic transducers 21, the detection ends of the ultrasonic transducers 21 penetrate through the mounting holes 11 and are positioned in the measuring tube body 1, the end faces of the detection ends of the ultrasonic transducers 21 are obliquely arranged, and in order to enable the detection ends of the two ultrasonic transducers 21 belonging to the same transducer group 2 to be oppositely arranged, further smooth receiving and transmitting of ultrasonic signals are ensured, the other ends of the ultrasonic transducers 21 are provided with positioning protrusions 22, and correspondingly, the inner wall of the mounting hole 11 is provided with positioning grooves 13 for inserting the positioning protrusions 22; when the ultrasonic transducers 21 are mounted in the corresponding mounting holes 11 and the positioning protrusions 22 are inserted into the positioning grooves 13, the detection ends of the two ultrasonic transducers 21 of the same transducer group 2 are opposite.
Referring to fig. 2, a rubber ring pad 14 is inserted into the inner wall of the mounting hole 11, the detection end of the ultrasonic transducer 21 may penetrate through the rubber ring pad 14, when the ultrasonic transducer 21 is inserted into the mounting hole 11, the rubber pad is located between the mounting hole 11 and the ultrasonic transducer 21, and the rubber ring pad 14 is simultaneously attached to the inner wall of the mounting hole 11 and the peripheral wall of the ultrasonic transducer 21, so as to seal the joint between the mounting hole 11 and the ultrasonic transducer 21. In addition, the inner wall of the opening of each mounting hole 11 is connected with a cover plate 15 in a threaded manner, and the cover plate 15 can be driven to be screwed by a tool, so that the cover plate 15 is covered at the opening of the mounting hole 11 and is pressed against the end part of the ultrasonic transducer 21 by the cover plate 15, and thus the positioning protrusion 22 on the ultrasonic transducer 21 is fixedly inserted into the positioning groove 13, and the fixed mounting of the ultrasonic transducer 21 is realized.
The embodiment 1 of the application relates to an ultra-large-aperture straight-through type multichannel ultrasonic fluid measuring device, which has the implementation principle that: the ultrasonic transducers 21 are installed in the corresponding installation holes 11, and the positioning protrusions 22 are inserted into the positioning grooves 13, so that the detection ends of the two ultrasonic transducers 21 belonging to the same transducer group 2 can be arranged in opposite directions; the measuring pipe body 1 is connected to a pipeline through a flange, and then, when fluid in the pipeline flows through the measuring pipe body 1, an external controller (such as a PLC) controls each transducer group 2 to sequentially start and realize ultrasonic wave receiving and transmitting according to a preset sequence so as to realize detection on different layers of the fluid to be measured; and then, the controller can calculate the flow speed and the flow of the fluid to be measured according to the ultrasonic receiving and transmitting the calculation result to the intelligent terminal of the tester, so that the tester can know the calculation result.
Example 2
The difference between the embodiment 2 and the embodiment 1 of the present application is only that the ultrasonic transducer 21 and the corresponding mounting hole 11 are mounted, specifically, referring to fig. 4 and 5, a flexible sealing pad 16 is inserted into the inner wall of the mounting hole 11, the flexible sealing pad 16 may be made of rubber, and a through hole through which the detection end of the ultrasonic transducer 21 can pass is formed in the middle of the flexible sealing pad 16.
Referring to fig. 6,7 and 8, a fixing ring block 18 is further inserted into the mounting hole 11, the fixing ring block 18 is detachably connected to the inner wall of the mounting hole 11, and the fixing ring block 18 is located at the periphery of the flexible sealing gasket 16 and is attached to the peripheral wall of the flexible sealing gasket 16. The positioning groove 13 for inserting the positioning protrusion 22 is formed on the upper surface of the fixed ring block 18. A locking component is arranged at the position of the measuring tube body 1 close to each mounting hole 11, and the locking component is used for fixedly inserting the positioning protrusion 22 into 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 disposed on the peripheral wall of the ultrasonic transducer 21, and the positioning protrusions 22 and all the docking protrusions 192 are uniformly distributed along the peripheral direction of the ultrasonic transducer 21. Correspondingly, the upper surface of the fixed ring block 18 is also provided with a plurality of docking slots 181, the docking slots 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 slots 181.
Referring to fig. 6 and 7, a cavity 182 is formed in the fixed ring block 18, and the cavity 182 is communicated with the sealing groove 111 and the positioning groove 13; the elastic locking strips 191 are positioned in the cavity 182, and one elastic locking strip 191 is respectively corresponding between any two adjacent butt joint grooves 181 and between the positioning groove 13 and the adjacent butt joint groove 181. Each elastic locking strip 191 comprises two elastic edge pieces 1911 and a butt elastic piece 1912 positioned between the two edge pieces 1911; the edge piece 1911 and the abutting elastic piece 1912 in the embodiment are arc-shaped, and the abutting elastic piece 1912 is convexly arranged towards the position close to the center of the fixed ring block 18; the side walls of the abutting joint protrusion 192 and the positioning protrusion 22 are provided with locking holes 221 for inserting the edge pieces 1911.
When the abutting 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, one end of the edge piece 1911 away from the abutting elastic piece 1912 is inserted into the abutting groove 181 or the positioning groove 13, when the abutting protrusion 192 is inserted into the abutting groove 181 and the positioning protrusion 22 is inserted into the positioning groove 13, the edge piece 1911 is pressed by the abutting protrusion 192 or the positioning protrusion 22 to retract into the cavity 182 and deform to squeeze the abutting elastic piece 1912, when the abutting protrusion 192 is completely inserted into the abutting groove 181 and the positioning protrusion 22 is completely inserted into the positioning groove 13, the end of the edge piece 1911 is reinserted into the abutting groove 181 or the positioning groove 13 under the elastic action and is inserted into the corresponding locking hole 221, and when the end of the edge piece 1911 is inserted into the locking hole 221, the edge piece 1911 and the abutting elastic piece 1912 are still in an elastically deformed state, that is, the end wall of the edge piece 1911 abuts against the inner wall of the locking hole 221, so as to mutually cooperate by the insertion mode and the elastic action to realize the fixed connection of the positioning protrusion 22 and the inner wall of the positioning groove 13.
In addition, in order to facilitate the ultrasonic transducer 21 to be detached from the mounting hole 11, a detachment opening 184 is formed in the upper surface of the fixing ring block 18 near each elastic locking strip 191 in the embodiment, a turning plate for opening and closing the detachment opening 184 is rotatably connected to the inner wall of the detachment opening 184, and the detachment opening 184 is communicated with the cavity 182; when the positioning protrusion 22 is required to be separated from the positioning groove 13, the disassembly opening 184 can be opened by rotating the turning plate in a direction away from the disassembly opening 184, a human hand or an external tool is used to extend into the cavity 182, and then the elastic locking strip 191 is pressed, so that the elastic locking strip 191 is completely retracted into the cavity 182, the edge piece 1911 is separated from the locking hole 221, the positioning protrusion 22 is finally separated from the positioning groove 13, and the docking protrusion 192 is separated from the docking groove 181.
Referring to fig. 7 and 9, the lower end of each abutting elastic piece 1912 penetrates through the cavity 182 and extends downwards to the periphery of the flexible sealing gasket 16, and a yielding hole 183 is formed in the inner wall of the fixing ring block 18, which is close to each abutting elastic piece 1912, in a penetrating manner; when the butt-joint elastic sheet 1912 is not deformed, the lower end of the butt-joint elastic sheet 1912 passes through the yielding hole 183 and is attached to the peripheral wall of the flexible sealing gasket 16, and when the butt-joint elastic sheet 1912 is deformed by being pressed by the edge sheet 1911, the butt-joint elastic sheet 1912 is bent and deformed in a direction close to the flexible sealing gasket 16 and presses the flexible sealing gasket 16, so that the flexible sealing gasket 16 is abutted to the peripheral wall of the ultrasonic transducer 21, and the sealing effect is optimized.
In addition, the bottom of the flexible sealing gasket 16 is integrally formed with a butt sealing gasket 17, and the bottom wall of the mounting hole 11 is provided with a sealing groove 111 into which the butt sealing gasket 17 can be inserted. And the present application is defined: the seal groove 111 and the hole 183 that gives way set up in one-to-one correspondence, and seal groove 111 just is located the mounting hole 11 and is close to the position of corresponding hole 183 department of giving way, and seal groove 111 groove depth direction perpendicular to butt joint elastic piece 1912 to the extrusion direction of flexible sealing gasket 16, when butt joint elastic piece 1912 extrudeed flexible sealing gasket 16, butt joint sealing gasket 17 will be extruded and support and press in the seal groove 111 inner wall to improve the connection compactness of flexible sealing gasket 16 and mounting hole 11 inner wall, optimize the leakproofness of flexible sealing gasket 16 to mounting hole 11 and ultrasonic transducer 21 seam crossing.
Example 3
Example 3 of the present application differs from example 1 in that: referring to fig. 10, the ultrasonic transducer 21 slides and connects in the mounting hole 11 along the hole depth direction corresponding to the mounting hole 11, the measuring tube body 1 is provided with the driving piece 3 for driving the ultrasonic transducer 21 to slide and fix the sliding position, specifically, the driving piece 3 can be a combined structure of a motor and a mini screw rod, the mini screw rod is in threaded connection with the peripheral wall of the ultrasonic transducer 21 through fixedly connecting the driving end of the motor with the end of the mini screw rod, and the length direction of the mini screw rod is ensured to be parallel to the hole depth direction of the mounting hole 11, so that the mini screw rod drives the ultrasonic transducer 21 to slide along the hole depth direction when rotating. The motor can be controlled by a preset controller, the two ultrasonic transducers 21 of the same transducer group 2 are controlled by the controller to move for a specified distance and then stop, and it is to be noted that the moving stroke of the two ultrasonic transducers 21 of the same transducer group 2 is the same, and when one ultrasonic transducer 21 moves towards the middle part close to the measuring tube body 1, the other ultrasonic transducer 21 moves towards the direction far away from the middle part of the measuring tube body 1, so as to ensure smooth transceiving of ultrasonic signals between the two ultrasonic transducers 21 of the same transducer group 2, and the installation position of the ultrasonic transducer 21 can be adjusted by controlling the movement of the ultrasonic transducer 21, so that the measuring level of the fluid is further increased, and the measuring comprehensiveness is improved.
The surface of the ultrasonic transducer 21 is also provided with a heat insulating layer 211, and the heat insulating layer 211 is made of a heat insulating material, such as a heat insulating metal material; the inner wall of the measuring tube body 1 near each mounting hole 11 is also provided with a scraping blade 112, when the ultrasonic transducer 21 is inserted into the corresponding mounting hole 11, the scraping blade 112 is sleeved on the periphery of the ultrasonic transducer 21 and is attached to the peripheral wall of the ultrasonic transducer 21, so that when the ultrasonic transducer 21 slides in the depth direction relative to the mounting holes 11, the peripheral wall of the ultrasonic transducer 21 is scraped, and dirt retention on the surface of the ultrasonic transducer 21 is reduced.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (7)
1. An ultra-large-aperture straight-through type multichannel ultrasonic fluid measuring device comprises a measuring tube body (1), and is characterized in that: a plurality of transducer groups (2) are arranged on the measuring tube body (1), each transducer group (2) comprises two ultrasonic transducers (21) which are oppositely arranged, the ultrasonic transducers (21) are arranged at the end part of the measuring tube body (1), and the two ultrasonic transducers (21) in the same transducer group (2) are positioned at different ends of the measuring tube body (1); and all the ultrasonic transducers (21) are distributed along the circumferential direction of the measuring tube body (1) under the end view angle of the measuring tube body (1); the side wall of the measuring tube body (1) close to each ultrasonic transducer (21) is provided with a mounting hole (11), the surface of each ultrasonic transducer (21) is provided with a positioning protrusion (22), the inner wall of each 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 assembly for fixedly inserting the positioning protrusion (22) into the positioning groove (13); the locking assembly comprises an elastic locking strip (191), a locking hole (221) is formed in the side wall of the positioning protrusion (22), the elastic locking strip (191) is connected to the inner wall of the positioning groove (13) in a sliding mode, and the locking hole (221) is located on the sliding path of the elastic locking strip (191).
2. The ultra-large caliber straight-through type multi-channel ultrasonic fluid measurement device according to claim 1, wherein: each ultrasonic transducer (21) is used for receiving and transmitting ultrasonic waves, one end face of each ultrasonic transducer is obliquely arranged, and the oblique end faces of the two ultrasonic transducers (21) belonging to the same transducer group (2) are oppositely arranged.
3. The ultra-large caliber straight-through type multi-channel ultrasonic fluid measurement device according to claim 1, wherein: the locking assembly further comprises a plurality of butt joint protrusions (192), the butt joint protrusions (192) and the positioning protrusions (22) are circumferentially distributed along the ultrasonic transducer (21), and butt joint grooves (181) for inserting the butt joint protrusions (192) are formed in the inner wall of the mounting hole (11); an elastic locking strip (191) is respectively corresponding between any two adjacent butt joint grooves (181) and between the positioning groove (13) and the adjacent butt joint groove (181); each elastic locking strip (191) comprises two edge pieces (1911) and a butt joint elastic piece (1912) located between the edge pieces (1911), the locking holes (221) are formed in the side walls of the positioning protrusions (22) and the butt joint protrusions (192) and used for being inserted by the edge pieces (1911), when the edge pieces (1911) and the butt joint elastic pieces (1912) are not deformed, one end, away from the corresponding butt joint elastic pieces (1912), of the edge pieces (1911) is inserted into the butt joint groove (181) or the positioning groove (13), and when the edge pieces (1911) are inserted into the locking holes (221), the edge pieces (1911) and the butt joint elastic pieces (1912) are in elastic deformation states.
4. The ultra-large caliber straight-through type multi-channel ultrasonic fluid measurement device according to claim 3, wherein: a flexible sealing gasket (16) is further arranged in the mounting hole (11), the flexible sealing gasket (16) is positioned between the ultrasonic transducer (21) and the inner wall of the mounting hole (11), and a through hole for the ultrasonic transducer (21) to penetrate is formed in the surface of the flexible sealing gasket (16); the lower end of the butt joint elastic piece (1912) extends to the periphery of the flexible sealing gasket (16) along the length direction of the butt joint elastic piece, when the butt joint elastic piece (1912) is not deformed, the butt joint elastic piece (1912) is attached to the peripheral wall of the flexible sealing gasket (16), and when the edge piece (1911) is inserted into the locking hole (221), the butt joint elastic piece (1912) is bent and deformed towards the direction close to the flexible sealing gasket (16) and abuts against the flexible sealing gasket (16).
5. The ultra-large caliber straight-through type multi-channel ultrasonic fluid measurement device according to claim 4, wherein: the lower surface of the flexible sealing gasket (16) close to each butt joint elastic piece (1912) is further integrally formed with a butt joint sealing gasket (17), and a sealing groove (111) for inserting the butt joint sealing gasket (17) is formed in the inner wall of the mounting hole (11).
6. The ultra-large caliber straight-through type multi-channel ultrasonic fluid measurement device according to claim 1, wherein: the ultrasonic transducer (21) is connected in the mounting hole (11) in a sliding manner along the depth direction of the mounting hole (11), and a driving piece (3) for fixing the sliding position of the ultrasonic transducer (21) is arranged on the measuring tube body (1).
7. The ultra-large caliber straight-through type multi-channel ultrasonic fluid measurement device according to claim 6, wherein: the inner wall of the measuring tube body (1) close to each mounting hole (11) is provided with a scraping blade (112), and the scraping blade (112) is positioned at the periphery of the ultrasonic transducer (21) and is attached to the peripheral wall of the ultrasonic transducer (21).
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| CN106441471A (en) * | 2016-10-14 | 2017-02-22 | 青岛海威茨仪表有限公司 | Heavy caliber ultrasonic flowmeter |
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| US8181534B2 (en) * | 2010-01-06 | 2012-05-22 | Daniel Measurement And Control, Inc. | Ultrasonic flow meter with transducer assembly, and method of manufacturing the same while maintaining the radial position of the piezoelectric element |
| EP2423648B9 (en) * | 2010-08-31 | 2016-01-13 | Kamstrup A/S | Ultrasonic flow meter with insert fixed by locking finger |
| US9711709B2 (en) * | 2013-08-08 | 2017-07-18 | General Electric Company | Transducer systems |
| CN206281534U (en) * | 2016-12-13 | 2017-06-27 | 杭州思筑智能设备有限公司 | A kind of oblique angle reflectance ultrasound low |
| CN208492235U (en) * | 2017-10-13 | 2019-02-15 | 苏州优脉瑞医疗科技有限公司 | A kind of ultrasound knife of energy converter easy to disassemble |
| CN111272240B (en) * | 2020-03-31 | 2024-07-23 | 杭州思筑智能设备有限公司 | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter |
| CN114993395A (en) * | 2022-06-29 | 2022-09-02 | 中国计量大学 | A detachable ultrasonic flowmeter pipeline and transducer installation structure |
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