CN216246570U - Flow channel core body for ultrasonic metering, flow channel structure and ultrasonic water meter - Google Patents
Flow channel core body for ultrasonic metering, flow channel structure and ultrasonic water meter Download PDFInfo
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- CN216246570U CN216246570U CN202122480957.9U CN202122480957U CN216246570U CN 216246570 U CN216246570 U CN 216246570U CN 202122480957 U CN202122480957 U CN 202122480957U CN 216246570 U CN216246570 U CN 216246570U
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Abstract
The utility model discloses a flow channel core body for ultrasonic measurement, which is characterized in that: the flow channel tube comprises a tube core, wherein the tube core is used for being inserted and fixed in a flow channel tube body; the two ends of the tube core are an inlet end and an outlet end, and the end surfaces of the inlet end and the outlet end are both of circular hole structures; the part of the tube core between the inlet end and the outlet end is a metering section; the cross section area of the flow passage of the metering section is smaller than that of the inlet end or the outlet end; the side wall of the metering section is provided with a pair of opposite-jet perforations for ultrasonic penetration; after the tube core is inserted and fixed in the flow passage tube body, the correlation through hole can be aligned and communicated with a correlation transducer mounting seat on the flow passage tube body. The utility model also discloses a flow channel structure adopting the flow channel core body for ultrasonic metering and an ultrasonic water meter. This technical scheme can make ultrasonic water meter measurement more accurate reliable, and the resistance to pressure is better.
Description
Technical Field
The utility model belongs to the field of ultrasonic metering instruments, and particularly relates to a flow channel core body for ultrasonic metering, a flow channel structure and an ultrasonic water meter.
Background
Ultrasonic wave strapping table is more accurate reliable than traditional mechanical strapping table, is convenient for realize electronization, intelligent management moreover, and it is the trend that ultrasonic wave strapping table replaces traditional mechanical strapping table.
The ultrasonic measurement pipeline realizes flow measurement based on an ultrasonic time difference method and an ultrasonic transducer opposite-emitting installation mode, the working principle of the ultrasonic measurement pipeline is shown in figure 1, when emitted ultrasonic waves are transmitted between a forward flow converter and a reverse flow converter, the flow of fluid, forward and reverse propagation time, time difference and line average cross-sectional area of the pipeline are obtained by measuring forward and reverse propagation time and time difference t and combining related parameters of the pipeline overflow cross-sectional area
The flow velocity and flow rate values are calculated by the following equations (1.1) to (1.3).
Obtained by deformation treatment of formula (1.1)
All flow rate values
In the formula: t is t1-2-ultrasonic forward propagation time;
t2-1-ultrasonic reverse propagation time;
Δ t-difference between forward and backward propagation times of ultrasonic wave;
v-mean flow rate of the fluid line;
qV-pipe volume flow;
c-the propagation velocity of the ultrasonic wave;
d, the diameter of the pipeline;
k-correction factor.
From the above equation, the flow rate value q is obtainedVIs equal to a constant multiplied by the average flow velocity v of the fluid line, which is proportional to Δ t and t1-2t2-1In inverse proportion. Because of t1-2t2-1The value of (d) is extremely small (typically several tens of microseconds) and is used as the denominator, so t1-2t2-1Value of (d) to flow value qVThe calculation accuracy of (2) has a slight influence. The precision of the time difference Δ t (usually in picosecond order) directly determines the metering precision of the instantaneous flow, and the critical value of the time difference Δ t is greatly influenced and interfered by the distance (sound path) between the two transducers, the included angle between the two transducers and the flow velocity direction and the state of the flow channel flow field.
The existing ultrasonic metering instrument usually adopts a special-shaped flow channel structure (such as the publication number: CN103383275B, the published 'square wave type flow channel ultrasonic water meter') or adopts a layout structure of a reflection type ultrasonic transducer (such as the publication number: CN204788525U, the published 'anti-pollution flow channel structure of an ultrasonic flow meter'). However, the special-shaped runner structure has the defect of large pressure loss; the two prior art ultrasonic metering runners are easy to have the situation of large instantaneous flow rate fluctuation of water flow, so that the fluctuation of a key value time difference delta t is caused, the anti-interference performance is poor, and the calculation error value is large. Therefore, the prior art still has the defects of ensuring the anti-interference performance and the improvement of the key value time difference delta t and ensuring the metering precision.
Based on this, the applicant considers to design a flow channel core body for ultrasonic measurement, a flow channel structure and an ultrasonic water meter, which can better ensure and improve the measurement precision and the measurement reliability and stability (anti-interference performance) of the ultrasonic measurement instrument.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the utility model are as follows: how to provide a runner core, runner structure and ultrasonic water meter for ultrasonic measurement that can better guarantee and promote the measurement precision and the reliable stability (interference immunity) of measurement of ultrasonic measurement instrument.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the flow channel core body for ultrasonic measurement is characterized in that: the flow channel tube comprises a tube core, wherein the tube core is used for being inserted and fixed in a flow channel tube body;
the two ends of the tube core are an inlet end and an outlet end, and the end surfaces of the inlet end and the outlet end are both of circular hole structures; the part of the tube core between the inlet end and the outlet end is a metering section; the cross section area of the flow passage of the metering section is smaller than that of the inlet end or the outlet end;
the side wall of the metering section is provided with a pair of opposite-jet perforations for ultrasonic penetration; after the tube core is inserted and fixed in the flow passage tube body, the correlation through hole can be aligned and communicated with a correlation transducer mounting seat on the flow passage tube body.
Compared with the prior art, the flow channel core for ultrasonic measurement in the technical scheme has the advantages that:
1. better anti-interference performance, higher metering precision and reliability
The sectional area of the metering section in the pipe core is smaller than that of the two ends of the pipe core, so that the design has the advantages that the water flow speed in the metering section can be improved (the flow speed of the metering section is about twice of that of the inlet end (or the outlet end)), and the interference influence of the instantaneous flow change of inlet water of a pipeline positioned outside the pipe core on the water flow speed in the metering section can be better reduced or eliminated by improving the internal flow speed of the metering section (the ratio of the sectional area of the metering section to the sectional area of the inlet end is smaller, and the interference resistance is better); meanwhile, the internal flow field of the water flow in the metering section has uniformity, the flow velocity change of each region (each region in the cross section and the length direction) is reduced, and the measurement accuracy is improved.
2. Avoid eddy current and improve the transmission stability of ultrasonic signals
The inlet end of the tube core adopts a gradually-changed streamline design from small to large and the outlet end adopts from large to small, so that the speed distribution uniformity is improved, eddy current caused by steps generated inside the flow channel is avoided, and stable transmission of ultrasonic signals is facilitated.
3. Increase the compressive strength
The tube core is integrally arranged in the tube body of the ultrasonic metering flow channel, and the effect of the inner side pressure-bearing protective sleeve is achieved, so that the integral pressure-resisting capacity of the ultrasonic metering flow channel can be improved, and the reliability of the flow channel is ensured to be more durable.
The flow channel structure comprises a flow channel pipe body, wherein a pair of transducer mounting seats which are integrally convex and can oppositely shoot along the axial direction of the flow channel pipe body are arranged on the outer side of the flow channel pipe body, and a transducer mounting hole communicated with the inside of the flow channel pipe body is formed in the bottom of each transducer mounting seat;
the method is characterized in that: the flow channel core body for ultrasonic measurement is characterized by further comprising the flow channel core body for ultrasonic measurement, wherein a tube core of the flow channel core body for ultrasonic measurement is inserted and fixed in the flow channel tube body, and a pair of correlation through holes in the tube core is aligned with a pair of transducer mounting seats;
the outer side of the flow channel pipe body is provided with an outer convex ear seat for installation, and the ear seat is provided with a connecting hole which vertically penetrates through.
The flow channel structure can enable the ultrasonic transducer to be horizontally opposite, so that the transverse spaces on two sides of the flow channel pipe body can be fully utilized; meanwhile, the structure of the connecting support lug can not only play a role in reinforcing the connecting rib block, enhance the structure and the connection strength between the transducer mounting seat and the fluid pipe body, but also can be fixedly mounted on the shell of the ultrasonic water meter through the connecting hole formed in the connecting support lug.
The ultrasonic water meter comprises a flow channel pipe body, a shell and a pair of ultrasonic transducers; each ultrasonic transducer is hermetically fixed on the transducer mounting seat of the runner pipe body; the shell is fixedly arranged on the runner pipe body, and a battery, a circuit board and a wireless communication module are arranged on the shell; the battery and the measurement output module are electrically connected with the circuit board;
the flow channel structure is characterized in that the flow channel pipe body is a flow channel pipe body in the flow channel structure;
the shell is provided with a bottom cover and an electronic box, and the bottom cover and the electronic box are fixedly assembled on the flow channel pipe body through connecting screws screwed in connecting holes in the lug seats; the circuit board and the wireless communication module are mounted on the electronic box;
the battery comprises a communication battery and a metering battery; the communication battery is used for supplying power to the wireless communication module and is arranged in a battery position arranged on the inner side of the bottom cover; the metering battery is used for supplying power to the circuit board, and the metering battery is installed in a battery position arranged in the electronic box.
The ultrasonic water meter of the technical scheme has the advantages that: when the battery for communication needs to be replaced, the battery for communication can be conveniently taken out by detaching the bottom cover.
Drawings
Fig. 1 is a schematic diagram of ultrasonic time-difference flow measurement.
Fig. 2 is a schematic structural diagram of a flow channel core for ultrasonic metrology in accordance with the present invention.
FIG. 3 is an inlet end view of a flow channel core for ultrasonic metering of the present invention.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a schematic structural diagram of the flow channel structure of the present invention.
Fig. 6 is an exploded view of an ultrasonic water meter of the present invention.
Fig. 7 is a schematic structural diagram of an ultrasonic water meter according to the present invention.
Labeled as:
10 tube core: 101 inlet end (1011 positioning projection), 102 metering section, 103 correlation perforation, 104 long strip reinforcing rib, 105 circular arc reinforcing rib, 106 smooth transition connecting surface, 107 horizontal plane
20, flow passage pipe body: 201 transducer mounting seat, 202 connecting support lug and 203 mounting support lug
30 bottom cover: 301 communication battery
40, an electronic box: 401 cell for measurement
50 circuit board
60 transparent cover
70 watch cover
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: as shown in fig. 2 to 4: the flow channel core body for ultrasonic measurement comprises a tube core, wherein the tube core is used for being inserted and fixed in a flow channel tube body;
the two ends of the tube core are an inlet end and an outlet end, and the end surfaces of the inlet end and the outlet end are both of circular hole structures; the part of the tube core between the inlet end and the outlet end is a metering section; the cross section area of the flow passage of the metering section is smaller than that of the inlet end or the outlet end;
the side wall of the metering section is provided with a pair of opposite-jet perforations for ultrasonic penetration; after the tube core is inserted and fixed in the flow passage tube body, the correlation through hole can be aligned and communicated with a correlation transducer mounting seat on the flow passage tube body.
Wherein, the axial lead of the correlation perforation and the axial lead of the metering section of the tube core are converged, and the included angle between the axial lead of the correlation perforation and the axial lead of the metering section of the tube core is any value of 20-45 degrees.
In practice, the included angle (θ in fig. 1) between the axis of the correlation through hole and the axis of the metering section of the tube core is preferably 30 degrees.
After the 30-degree included angle is adopted, the sound path of ultrasonic waves can be increased, the numerical value of delta t is increased, the disturbance amplitude of instantaneous fluctuation of water flow to delta t is reduced, the anti-interference performance is higher, and the metering accuracy is better ensured. In addition, theta is 30 degrees, still can make the perforation's of correlation pore wall lasting not scale deposit, maintains the cleanliness of good ultrasonic sound path for a long time, also does benefit to and ensures that the lasting reliable and stable detection measurement of supersound send-receiver signal.
Wherein, the tube core is made of engineering plastic materials.
Preferably, the engineering plastic is an engineering plastic with a heat distortion temperature higher than 80 ℃ and a linear expansion coefficient less than 7, such as any one of PC, PET reinforced by glass fiber or PA 66.
Therefore, the tube core is easier to process and manufacture through an injection molding process, the processing efficiency is high, the processing cost is lower, the tube core is used for a long time without scaling, the smooth and uniform stability of the flow in the metering section is better ensured, and after the smooth and uniform stability of the fluid in the flow channel is ensured for a long time, the metering precision can be ensured to be accurate and reliable for a long time.
Wherein, at least one convex positioning bulge is arranged on the outer side surface of the end part of the inlet end of the tube core; the positioning bulge is used for being matched and connected with a positioning slot arranged on the inner side of the inlet end of the flow channel tube body to realize limiting connection in the axial direction and the circumferential direction.
In practice, the positioning projection is preferably a bar extending along the length of the tube core. The number of the positioning protrusions is two, which are arranged at equal intervals in the circumferential direction.
The assembly limiting structure for the matched connection between the protrusion for positioning on the tube core and the flow channel tube body is simple in structure, easy to assemble and capable of obtaining reliable positioning effects in the axial direction and the circumferential direction.
Meanwhile, the positioning bulge of the tube core inlet end can also play a role of a reinforcing rib, so that the structural strength and the pressure resistance of the tube core inlet end are improved.
The outer side of the metering section of the tube core is provided with two concave spaces which are in mirror symmetry, and the inner concave surfaces of the two concave spaces enable the inner side of the metering section of the tube core to be formed with a pair of parallel inner side surfaces.
Therefore, the uniformity of the flow field in the flow channel between the pair of parallel inner side surfaces is reduced, the flow velocity change and the inconsistency of each area of the cross section are reduced, the water flow in the metering section is uniform and stable, and the metering precision is effectively ensured.
As shown in fig. 3, a pair of parallel inner sides such that the metering section of the die is approximately "rectangular" perforated as viewed from the end face of the die.
And each concave space is internally provided with a strip-shaped reinforcing rib and a circular arc-shaped reinforcing rib which are fixed on the outer side surface of the metering section, the strip-shaped reinforcing rib extends along the axial direction of the tube core, and the circular arc-shaped reinforcing rib is of a circular arc-shaped structure along the circumferential direction of the tube core.
The structures of the strip-shaped reinforcing ribs and the arc-shaped reinforcing ribs can play roles in reducing weight, reducing materials and enhancing structural strength.
In practice, the outer diameters of the elongated reinforcing ribs and the circular arc-shaped reinforcing ribs are preferably consistent with the outer diameters of the inlet end and the outlet end of the tube core. Therefore, the outer sides of the strip-shaped reinforcing ribs and the circular arc-shaped reinforcing ribs can be attached and connected with the inner side wall of the runner pipe body to form a supporting function, so that the outer side of the pipe core can be attached and connected with the inner side of the runner pipe body, and pressure resistance and reliability are ensured.
And a smooth transition connecting surface is arranged between the inner side edge of each circular hole of the inlet end and the outlet end and the edge of the adjacent pair of parallel inner side surfaces.
The two ports and the inner side surface of the metering section are in a gradually-changed streamline design from small to large and from large to small, so that the speed distribution uniformity is improved, eddy current caused by steps generated inside the flow channel is avoided, and stable transmission of ultrasonic signals is facilitated.
Wherein, a pair of parallel inner side surfaces are formed on the inner side of the metering section of the tube core and are horizontal surfaces;
the correlation perforation is arranged on two opposite arc-shaped side surfaces which are connected between two side edges of the pair of parallel inner side surfaces.
The correlation holes arranged on the two arc-shaped side surfaces do not influence the structural pressure resistance strength of the tube core; and the two arc-shaped side surfaces are more attached to the inner wall of the adjacent fluid pipeline, the ultrasonic sound path can not be shortened, and the metering precision can be effectively ensured.
As shown in fig. 5 and 6: the flow channel structure comprises a flow channel pipe body, wherein a pair of transducer mounting seats which are integrally convex and can oppositely shoot along the axial direction of the flow channel pipe body are arranged on the outer side of the flow channel pipe body, and a transducer mounting hole communicated with the inside of the flow channel pipe body is formed in the bottom of each transducer mounting seat;
the flow channel core body for ultrasonic measurement is characterized by further comprising the flow channel core body for ultrasonic measurement, wherein a tube core of the flow channel core body for ultrasonic measurement is inserted and fixed in the flow channel tube body, and a pair of correlation through holes in the tube core is aligned with a pair of transducer mounting seats;
the outer side of the flow channel pipe body is provided with an outer convex ear seat for installation, and the ear seat is provided with a connecting hole which vertically penetrates through.
In practice, the ear mount includes one connection lug disposed each to the outside of the transducer mount.
The flow channel structure can enable the ultrasonic transducer to be horizontally opposite, so that the transverse spaces on two sides of the flow channel pipe body can be fully utilized; meanwhile, the structure of the connecting support lug can not only play a role in reinforcing the connecting rib block, enhance the structure and the connection strength between the transducer mounting seat and the fluid pipe body, but also can be fixedly mounted on the shell of the ultrasonic water meter through the connecting hole formed in the connecting support lug.
When the fluid pipeline is implemented, the lug seat further comprises mounting lugs arranged on the outer side face of the fluid pipeline and arranged at intervals in the length direction of the fluid pipeline with the connecting lugs. The space between the installation support lug and the connection support lug on the same side can be used for inserting a battery structure.
The pair of connecting support lugs and the mounting support lugs enable the outer side of the flow channel pipe body to form four lug seats (and screw connecting holes) for fastening and mounting the shell of the ultrasonic water meter, and the connection stabilizing effect of the electronic meter head can be effectively ensured.
In practice, the housing of the ultrasonic water meter includes a bottom cover and an electronic box, wherein the bottom cover and the electronic box respectively use two of the four lug seats (and screw connection holes), and preferably, the two lug seats are two mounting lugs or two connecting lugs located at two sides of the pipe body. Therefore, the distance between the two fixed connection point positions on the fluid pipeline of the bottom cover and the electronic box is longer, the connection force is distributed more uniformly, and the fixing effect is better.
As shown in fig. 6 and 7: the ultrasonic water meter comprises a flow channel pipe body, a shell and a pair of ultrasonic transducers; each ultrasonic transducer is hermetically fixed on the transducer mounting seat of the runner pipe body; the shell is fixedly arranged on the runner pipe body, and a battery, a circuit board and a wireless communication module are arranged on the shell; the battery and the measurement output module are electrically connected with the circuit board;
the flow channel pipe body is a flow channel pipe body in the flow channel structure;
the shell is provided with a bottom cover and an electronic box, and the bottom cover and the electronic box are fixedly assembled on the flow channel pipe body through connecting screws screwed in connecting holes in the lug seats; the circuit board and the wireless communication module are mounted on the electronic box;
the battery comprises a communication battery and a metering battery; the communication battery is used for supplying power to the wireless communication module and is arranged in a battery position arranged on the inner side of the bottom cover; the metering battery is used for supplying power to the circuit board, and the metering battery is installed in a battery position arranged in the electronic box.
When this technical scheme's ultrasonic water meter installs and uses and its advantage:
the communication battery is placed in the groove of the bottom cover, the purpose of fixing is achieved through the fixed connection of the bottom cover, the electronic box and the runner pipe body, a lead of the communication battery penetrates through the electronic box to be welded with the circuit board, and sealant needs to be poured to seal a perforated part;
the bottom cover and the runner pipe body assembly are fixed through two cross pan head screws, and the transducer wire harness penetrates into the electronic box through the wire harness through hole and is required to be filled with sealant; if the communication battery needs to be replaced, the communication battery can be conveniently taken out by detaching the bottom cover;
the electronic box is connected with the pipe section assembly through two cross pan head screws and is required to be filled with sealant;
the metering battery is fixed in the electronic box through a pressure plate by a self-tapping screw;
the meter cover seat and the electronic box are fixed through a buckle and two cross pan head screws and are covered with plastic package;
the circuit board assembly is connected with the electronic box through three self-tapping screws;
two self-tapping screws of the transparent cover are connected with the electronic box and need to be filled with sealant
The watch cover can be turned over, and the maximum height after turning over is not more than 140 mm.
To sum up, be different from current reflection-type ultrasonic water meter, the ultrasonic water meter among this technical scheme has the advantage to be:
1. the correlation has no signal attenuation, the receiving and sending of ultrasonic metering signals are more reliable, and the metering is more accurate and reliable;
2. the inside of the whole tube core (covering both ends and the metering section) is smooth and has no obstacle for the flow of the fluid, so that the generation of flocculation flow or turbulence and the interference of the flocculation flow or the turbulence to ultrasonic metering signals are avoided, the flow of the fluid in the tube core is uniform, rapid and stable, and the realization of durable, accurate and reliable metering is facilitated.
The above is only a preferred embodiment of the present invention, and it should be noted that several modifications and improvements made by those skilled in the art without departing from the technical solution should also be considered as falling within the scope of the claims.
Claims (10)
1. The flow channel core body for ultrasonic measurement is characterized in that: the flow channel tube comprises a tube core, wherein the tube core is used for being inserted and fixed in a flow channel tube body;
the two ends of the tube core are an inlet end and an outlet end, and the end surfaces of the inlet end and the outlet end are both of circular hole structures; the part of the tube core between the inlet end and the outlet end is a metering section; the cross section area of the flow passage of the metering section is smaller than that of the inlet end or the outlet end;
the side wall of the metering section is provided with a pair of opposite-jet perforations for ultrasonic penetration; after the tube core is inserted and fixed in the flow passage tube body, the correlation through hole can be aligned and communicated with a correlation transducer mounting seat on the flow passage tube body.
2. The flow channel core for ultrasonic metering according to claim 1, wherein: the axial lead of the correlation perforation is intersected with the axial lead of the metering section of the tube core, and the included angle between the axial lead of the correlation perforation and the axial lead of the metering section of the tube core is any value from 20 degrees to 45 degrees.
3. The flow channel core for ultrasonic metering according to claim 1, wherein: the tube core is made of engineering plastic materials.
4. The flow channel core for ultrasonic metering according to claim 1, wherein: at least one convex positioning bulge is arranged on the outer side surface of the end part of the inlet end of the tube core; the positioning bulge is used for being matched and connected with a positioning slot arranged on the inner side of the inlet end of the flow channel tube body to realize limiting connection in the axial direction and the circumferential direction.
5. The flow channel core for ultrasonic metering according to any one of claims 1 to 4, wherein: the outer side of the metering section of the tube core is provided with two concave spaces which are in mirror symmetry, and the inner sides of the metering section of the tube core are provided with a pair of parallel inner side surfaces due to the inner concave surfaces of the two concave spaces.
6. The flow channel core for ultrasonic metering according to claim 5, wherein: and a strip-shaped reinforcing rib and a circular arc-shaped reinforcing rib which are fixed on the outer side surface of the metering section are arranged in each inwards concave space, the strip-shaped reinforcing rib extends along the axial direction of the tube core, and the circular arc-shaped reinforcing rib is of a circular arc-shaped structure along the circumferential direction of the tube core.
7. The flow channel core for ultrasonic metering according to claim 5, wherein: and a smooth transition connecting surface is arranged between the inner side edge of each circular hole of the inlet end and the outlet end and the edge of the adjacent pair of parallel inner side surfaces.
8. The flow channel core for ultrasonic metering according to claim 5, wherein: a pair of parallel inner side surfaces which are horizontal planes are formed on the inner side of the metering section of the tube core;
the correlation perforation is arranged on two opposite arc-shaped side surfaces which are connected between two side edges of the pair of parallel inner side surfaces.
9. The flow channel structure comprises a flow channel pipe body, wherein a pair of transducer mounting seats which are integrally convex and can oppositely shoot along the axial direction of the flow channel pipe body are arranged on the outer side of the flow channel pipe body, and a transducer mounting hole communicated with the inside of the flow channel pipe body is formed in the bottom of each transducer mounting seat;
the method is characterized in that: the flow channel core for ultrasonic metering of claim 8, wherein a tube core of the flow channel core for ultrasonic metering is inserted and fixed in the flow channel tube body, and a pair of the correlation through holes on the tube core is aligned with a pair of the transducer mounting seats;
the outer side of the flow channel pipe body is provided with an outer convex ear seat for installation, and the ear seat is provided with a connecting hole which vertically penetrates through.
10. The ultrasonic water meter comprises a flow channel pipe body, a shell and a pair of ultrasonic transducers; each ultrasonic transducer is hermetically fixed on the transducer mounting seat of the runner pipe body; the shell is fixedly arranged on the runner pipe body, and a battery, a circuit board and a wireless communication module are arranged on the shell; the battery and the measurement output module are electrically connected with the circuit board;
the flow channel pipe body is the flow channel pipe body in the flow channel structure in claim 9;
the shell is provided with a bottom cover and an electronic box, and the bottom cover and the electronic box are fixedly assembled on the flow channel pipe body through connecting screws screwed in connecting holes in the lug seats; the circuit board and the wireless communication module are mounted on the electronic box;
the battery comprises a communication battery and a metering battery; the communication battery is used for supplying power to the wireless communication module and is arranged in a battery position arranged on the inner side of the bottom cover; the metering battery is used for supplying power to the circuit board, and the metering battery is installed in a battery position arranged in the electronic box.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865660A (en) * | 2021-10-12 | 2021-12-31 | 重庆智慧水务有限公司 | Flow passage core body, flow passage structure and ultrasonic water meter |
| WO2023197457A1 (en) * | 2022-04-14 | 2023-10-19 | 重庆市伟岸测器制造股份有限公司 | Small-flow ultrasonic water meter |
| CN117288282A (en) * | 2023-10-31 | 2023-12-26 | 青岛乾程科技股份有限公司 | Ultrasonic gas meter module and ultrasonic flowmeter |
-
2021
- 2021-10-12 CN CN202122480957.9U patent/CN216246570U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865660A (en) * | 2021-10-12 | 2021-12-31 | 重庆智慧水务有限公司 | Flow passage core body, flow passage structure and ultrasonic water meter |
| WO2023197457A1 (en) * | 2022-04-14 | 2023-10-19 | 重庆市伟岸测器制造股份有限公司 | Small-flow ultrasonic water meter |
| CN117288282A (en) * | 2023-10-31 | 2023-12-26 | 青岛乾程科技股份有限公司 | Ultrasonic gas meter module and ultrasonic flowmeter |
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