CN218443998U - Ultrasonic runner and ultrasonic water meter - Google Patents
Ultrasonic runner and ultrasonic water meter Download PDFInfo
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- CN218443998U CN218443998U CN202222665150.7U CN202222665150U CN218443998U CN 218443998 U CN218443998 U CN 218443998U CN 202222665150 U CN202222665150 U CN 202222665150U CN 218443998 U CN218443998 U CN 218443998U
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Abstract
The utility model discloses an ultrasonic flow channel, which comprises a core pipe, wherein an ultrasonic propagation section for ultrasonic waves to pass through is arranged in the core pipe, the side wall of the ultrasonic propagation section is provided with a perforation for transmitting and receiving the ultrasonic waves by an ultrasonic transducer in pairs, and a reflector plate for reflecting and propagating the ultrasonic waves is fixedly arranged in the ultrasonic propagation section; the method is characterized in that: the inner side sections of the ultrasonic propagation sections of the core tube are rectangular, the reflecting sheets are fixedly embedded in the inner sides of the ultrasonic propagation sections, and the reflecting surfaces of the reflecting sheets are flush with the inner side surfaces of the ultrasonic propagation sections adjacent to each other. The utility model also discloses an ultrasonic water meter. The utility model has the advantages that: the flow is not blocked, the pressure loss is small, the flow field is stable, and the metering precision is higher.
Description
Technical Field
The utility model belongs to the ultrasonic water meter field, concretely relates to ultrasonic runner and ultrasonic water meter.
Background
Compared with the traditional mechanical metering water meter, the ultrasonic water meter is more accurate and reliable, and is convenient for realizing electronic and intelligent management. The ultrasonic water meter realizes flow measurement based on an ultrasonic time difference method and an ultrasonic transducer correlation installation mode, when emitted ultrasonic waves are transmitted between a forward flow converter and a reverse flow converter, the flow of fluid is obtained by measuring forward and reverse propagation time and time difference t of forward and reverse flow and combining with related parameters of the flow cross section area of a pipeline, and the calculation of the forward and reverse propagation time, the time difference, the linear average flow velocity and the flow value is shown in formulas (1.1) to (1.3).
Obtained by deformation treatment of formula (1.1)
All flow rate values
In the formula: t is t 1-2 -ultrasonic forward propagation time;
t 2-1 -ultrasonic reverse propagation time;
delta t is the difference between the forward propagation time and the backward propagation time of the ultrasonic wave;
v-mean flow rate of the fluid line;
q V -pipe volume flow;
c-the propagation velocity of the ultrasonic wave;
d, the diameter of the pipeline;
k is the correction factor.
From the above equation, the flow rate value q is obtained V Is equal to a constant multiplied by the average flow velocity v of the fluid line, which is proportional to Δ t and t 1-2 t 2-1 In inverse proportion. Because of t 1-2 t 2-1 The value of (typically, several tens of microseconds) is extremely small and is taken as the denominator, so t 1-2 t 2-1 Value of (d) to flow value q V The calculation accuracy of (2) has a slight influence. The precision of the time difference delta t (usually in picosecond magnitude) directly determines the metering precision of instantaneous flow, and the critical value time difference delta t is greatly influenced and disturbed 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 a flow channel flow field.
The existing ultrasonic water meter mainly adopts two ultrasonic transducer cloth-mounting structures of a direct-injection type and a reflection type, wherein the reflection type can improve the length of a sound path in a shorter pipe length, so that the measurement precision can be better improved, and the application is more extensive.
The patent of publication number CN217236892U in the prior art discloses an ultrasonic water meter tube core structure and a shell, and the technical scheme adopts a reflection type structure for propagating ultrasonic waves, and the technical scheme comprises a tube core body, wherein the tube core body is provided with: an entrance port; an exit port; a first reflection section provided corresponding to the incident port; a second reflection portion provided corresponding to the exit port; further comprising: a third reflection section; the ultrasonic signal enters from the entrance port, is reflected by the first reflection unit, the third reflection unit and the second reflection unit in sequence, and then is emitted from the exit port. Ultrasonic signal passes through first reflecting part, third reflecting part, the syllogic reflection of second reflecting part among this technical scheme, can prolong the sound path, improves measurement accuracy.
However, the tube core structure and the shell of the ultrasonic water meter still have the following defects:
for the first reflection part and the third reflection part, the first reflection part and the third reflection part are fixed by the support which is formed inwards in the tube core body all the time, and the support which is formed inwards in the tube core body can block water flow flowing through the tube core body, so that the stability of a flow field is influenced, and the measurement precision is also adversely influenced.
Based on this, the applicant considers to design an ultrasonic flow channel which does not block water flow and has a more stable flow field and an ultrasonic water meter thereof.
Disclosure of Invention
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide an ultrasonic flow channel which does not block water flow and has a more stable flow field and an ultrasonic water meter thereof.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the ultrasonic flow channel comprises a core pipe, wherein an ultrasonic propagation section for ultrasonic waves to pass through is arranged in the core pipe, the side walls of the ultrasonic propagation section are provided with ultrasonic transceiving perforations for ultrasonic transducers to transmit and receive the ultrasonic waves in pairs, and a reflecting sheet for reflecting the propagating ultrasonic waves is fixedly arranged in the ultrasonic propagation section; the method is characterized in that:
the inner side sections of the ultrasonic propagation sections of the core pipe are rectangular, the reflection sheet is embedded and fixed on the inner side of the ultrasonic propagation sections, and the reflection surface of the reflection sheet is flush with the inner side surface of the ultrasonic propagation sections adjacent to the periphery.
Compared with the prior art, the utility model discloses ultrasonic flow has an advantage to be:
1. no obstruction to water flow and less pressure loss
Because the reflector plate is embedded in the inner side of the ultrasonic wave propagation section, and the reflecting surface of the reflector plate is flush with the inner side surface of the ultrasonic wave propagation section adjacent to the periphery.
Therefore, the ultrasonic wave propagation section can not block water flow, so that the flow field in the core tube is smooth and stable, the water flow pressure loss is small, and the metering precision can be further improved.
2. The core tube structure is more simplified
Different from the prior art, the reflecting sheet is fixedly installed in the core tube by adopting a support structure. The technical scheme of this application directly utilizes the body of core pipe to supply the reflector plate embedding fixed for the inside structure of core pipe is more retrencied. Therefore, an injection molding process (and an injection mold) is easily adopted, the reflector plate is in a preset mounting position in advance before injection molding, and then the finally required core tube structure product can be quickly manufactured through injection molding, so that the processing efficiency is greatly improved.
The ultrasonic water meter comprises a core pipe and sleeves, wherein the core pipe is inserted and fixed in the sleeves, transducer mounting seats for fixedly mounting ultrasonic transducers are arranged on the sleeves in pairs, and the transducer mounting seats are opposite to the ultrasonic transceiving perforations on the core pipe one by one;
the method is characterized in that: the core pipe is the core pipe of the ultrasonic flow channel.
By adopting the core pipe of the ultrasonic flow channel in the technical scheme, the ultrasonic water meter can have the advantages of all core pipes.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of the core tube in the ultrasonic flow channel of the present invention.
Fig. 2 is an end view of the ultrasonic flow channel core tube of the present invention.
Fig. 3 is a cross-sectional view taken along the upper and lower lines of fig. 2.
Fig. 4 is a cross-sectional view of the sleeve in the ultrasonic water meter of the present invention.
Fig. 5 is a schematic structural diagram of the ultrasonic water meter before the core tube and the sleeve are inserted into the core tube.
Fig. 6 is a schematic structural diagram of the cartridge of the core tube and the sleeve in the ultrasonic water meter of the present invention.
Fig. 7 is a cross-sectional view of the core tube and the sleeve of the ultrasonic water meter of the present invention.
Labeled as:
10, a core tube: 101 circular tube section, 102 ultrasonic transmission section, 103 through holes for ultrasonic receiving and transmitting, 104 reflector plate, 105 long reinforcing ribs, 106 annular reinforcing ribs and 107 bulge for false installation prevention positioning
20, sleeving a sleeve: 201 transducer mounting seat, 202 false installation preventing positioning groove
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3:
an ultrasonic flow channel, which comprises a core tube 10, wherein an ultrasonic propagation section 102 for passing ultrasonic waves is arranged in the core tube 10, the side walls of the ultrasonic propagation section 102 are provided with a pair of ultrasonic transmitting and receiving through holes 103 for transmitting and receiving ultrasonic waves by an ultrasonic transducer, and a reflection sheet 104 for reflecting and propagating the ultrasonic waves is fixedly arranged in the ultrasonic propagation section 102;
the inside cross-sections of the ultrasonic propagation sections 102 of the core tube 10 are rectangular, the reflection sheet 104 is embedded inside the ultrasonic propagation sections 102, and the reflection surface of the reflection sheet 104 is flush with the inside surface of the ultrasonic propagation section 102 adjacent to the periphery.
The ultrasonic propagation section 102 of the core tube 10 has upper and lower inner surfaces distributed in the vertical direction and left and right inner surfaces distributed in the horizontal direction, in which the ultrasonic transmission/reception through-holes 103 and the reflection sheets 104 are alternately provided on the left and right inner surfaces distributed in the horizontal direction.
After the structure is adopted, namely when the water in the core pipe 10 is in a standing state, dirt in the water can sink to the lower side surface of the core pipe 10 under the action of gravity, namely, the dirt cannot be scaled on the ultrasonic transmitting and receiving through hole 103 and the reflecting sheet 104, so that the cleanliness and the reliability of an ultrasonic wave propagation path can be ensured for a long time, and the precision and the reliability of measurement can be ensured for a long time.
The ultrasonic flow channel further comprises a multistage ultrasonic reflection structure, and the multistage ultrasonic reflection structure comprises at least two reflection sheets 104 which are staggered in the length direction of the core tube 10 and are alternately arranged on the left inner side surface and the right inner side surface.
After the multi-stage ultrasonic wave reflection structure is adopted, two or more reflection sheets 104 can be utilized to form multi-stage reflection propagation ultrasonic waves, and the sound path of ultrasonic wave propagation is further prolonged, so that the time difference delta t and the flow value q are improved V The accuracy of the measurement.
Two ends of the core tube 10 in the length direction are provided with circular tube sections 101 with calibers larger than those of the ultrasonic propagation section 102, and the inner side surfaces of the circular tube sections 101 and the rectangular inner side surfaces of the ultrasonic propagation section 102 are connected through smooth transition surfaces.
Thus, the flow velocity v of the water flow can be increased by reducing the inner diameter of the ultrasonic propagation section 102, and the flow rate value q can be increased by the same method V The calculated interference immunity and accuracy.
Wherein, on the outside of the core tube 10: the outer side of the ultrasonic wave propagation section 102 in the middle of the core tube 10 in the length direction is narrowed, and the outer sides of the circular tube sections 101 at the two ends of the core tube 10 in the length direction are enlarged;
and a reinforcing rib structure is arranged in the outer annular space of the ultrasonic wave propagation section 102.
After the reinforcing rib structure is adopted, the structural strength of the ultrasonic wave propagation section 102 and the whole core pipe 10 can be improved, and the durability and reliability of the product can be better ensured.
Wherein, the reinforcing rib structure comprises a long reinforcing rib 105 and a ring-shaped reinforcing rib 106 which are convexly molded on the outer side surface of the ultrasonic propagation section 102;
the long reinforcing ribs 105 extend in the longitudinal direction of the ultrasonic propagation section 102, both ends of each long reinforcing rib are connected to the outer side surface of the circular pipe section 101, and a plurality of long reinforcing ribs 105 are arranged at intervals in the circumferential direction of the core pipe 10;
the annular reinforcing rib 106 is a circular ring structure surrounding the outer side surface of the ultrasonic propagation section 102, and a plurality of annular reinforcing ribs 106 are arranged at intervals in the length direction of the ultrasonic propagation section 102;
the respective outer radii of the elongated ribs 105 and the annular ribs 106 are identical to the outer radius of the circular pipe section 101.
The above long reinforcing rib 105 and the annular reinforcing rib 106 can be disposed by making full use of the outer circumferential annular space of the ultrasonic propagation section 102, and the structure in which the long reinforcing rib 105 and the annular reinforcing rib 106 are cross-connected to each other also greatly enhances the structural strength of the reinforcing rib structure itself and the core tube 10.
The reflection sheet 104 is a stainless steel metal block, and the core tube 10 is a plastic tube.
Therefore, an injection molding process (and an injection mold) is easily adopted, the reflector plate 104 is located at a preset installation position before injection molding, and then, the finally required core tube 10 structure product can be quickly manufactured through injection molding, so that the processing efficiency is greatly improved.
Wherein, be provided with on the core pipe 10 and prevent mistake dress location structure, prevent mistake dress location structure including preventing that the outer peripheral side evagination shaping of core pipe 10 length direction tip position prevents that dress location uses arch 107, prevent mistake dress location with arch 107 for following the rectangular shape of core pipe 10 axial extension.
The structure of the protrusion 107 for preventing incorrect assembly and positioning can be matched with the corresponding incorrect assembly preventing positioning groove on the sleeve 20 of the ultrasonic water meter to realize the incorrect assembly and the accurate positioning assembly of the core pipe 10 in the circumferential direction, the axial direction and the positive and negative directions.
As shown in fig. 4 to 7:
ultrasonic water meter, including sleeve pipe 20 and above-mentioned core pipe 10, core pipe 10 cartridge is fixed inside sleeve pipe 20, be provided with the transducer mount pad 201 that supplies ultrasonic transducer fixed mounting on the sleeve pipe 20 in pairs, transducer mount pad 201 with for the ultrasonic wave on the core pipe 10 receiving and dispatching perforation 103 just one-to-one.
The ultrasonic flow channel and the ultrasonic water meter have the advantages that:
1. no obstruction to water flow and less pressure loss
Because the reflection sheet 104 is embedded inside the ultrasonic propagation section 102, and the reflection surface of the reflection sheet 104 is flush with the inner surface of the ultrasonic propagation section 102 adjacent to the periphery.
Therefore, the ultrasonic wave propagation section 102 does not block water flow, so that the flow field in the core tube 10 is smooth and stable, the water flow pressure loss is small, and the metering precision can be further improved.
2. The core tube 10 has a more simplified structure
Unlike the prior art, the present invention employs a mounting structure for fixedly mounting the reflector sheet 104 within the core tube 10. According to the technical scheme, the reflecting sheet 104 is embedded and fixed by directly utilizing the tube body of the core tube 10, so that the structure inside the core tube 10 is more simplified. Therefore, an injection molding process (and an injection mold) is easily adopted, the reflector plate 104 is located at a preset installation position before the injection molding, and then, the finally required core tube 10 structure product can be quickly manufactured through injection molding, so that the processing efficiency is greatly improved.
In practice, the corresponding sleeve 20 is provided with a positioning recess 202 for preventing erroneous installation corresponding to the positioning projection 107 for preventing erroneous installation on the core tube 10.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the technical scope of the present invention, and the technical scope of the present invention is also considered to fall into the scope of the claims.
Claims (9)
1. The ultrasonic flow channel comprises a core pipe, wherein an ultrasonic propagation section for ultrasonic waves to pass through is arranged in the core pipe, the side walls of the ultrasonic propagation section are provided with ultrasonic transceiving perforations for ultrasonic transducers to send and receive the ultrasonic waves in pairs, and a reflecting sheet for reflecting the propagating ultrasonic waves is fixedly arranged in the ultrasonic propagation section; the method is characterized in that:
the inner side sections of the ultrasonic propagation sections of the core pipe are rectangular, the reflection sheet is embedded and fixed on the inner side of the ultrasonic propagation sections, and the reflection surface of the reflection sheet is flush with the inner side surface of the ultrasonic propagation sections adjacent to the periphery.
2. The ultrasonic flow channel of claim 1, wherein: the ultrasonic propagation section of the core tube is provided with an upper inner side surface, a lower inner side surface, a left inner side surface and a right inner side surface, wherein the upper inner side surface and the lower inner side surface are vertically distributed, the left inner side surface and the right inner side surface are horizontally distributed, and the through holes and the reflecting sheets for transmitting and receiving ultrasonic waves are alternately arranged on the left inner side surface and the right inner side surface which are horizontally distributed.
3. The ultrasonic flow channel of claim 2, wherein: the core tube is characterized by further comprising a multistage ultrasonic reflection structure, wherein the multistage ultrasonic reflection structure comprises at least two reflection sheets which are staggered in the length direction of the core tube and are alternately arranged on the left inner side face and the right inner side face.
4. The ultrasonic flow channel of claim 1, wherein: the two ends of the core pipe in the length direction are provided with circular pipe sections with the caliber larger than that of the ultrasonic propagation section, and the inner side surfaces of the circular pipe sections are connected with the rectangular inner side surface of the ultrasonic propagation section through smooth transition surfaces.
5. The ultrasonic flow channel of claim 4, wherein: on the outside of the core tube: the outer side of the ultrasonic wave propagation section positioned in the middle of the core pipe in the length direction is in a narrowing shape, and the outer sides of the circular pipe sections at two ends of the core pipe in the length direction are in an expanding shape;
and a reinforcing rib structure is arranged in the outer annular space of the ultrasonic propagation section.
6. The ultrasonic flow channel of claim 5, wherein: the reinforcing rib structure comprises a long reinforcing rib and an annular reinforcing rib which are convexly formed on the outer side surface of the ultrasonic propagation section;
the long reinforcing ribs extend along the length direction of the ultrasonic propagation section, two ends of each long reinforcing rib are connected with the outer side surface of the circular pipe section, and a plurality of long reinforcing ribs are arranged on the circumferential direction of the core pipe at intervals;
the annular reinforcing ribs are of annular structures surrounding the outer side face of the ultrasonic propagation section, and a plurality of annular reinforcing ribs are arranged at intervals in the length direction of the ultrasonic propagation section;
the respective outer radius of the long reinforcing ribs and the annular reinforcing ribs is consistent with the outer radius of the circular pipe section.
7. The ultrasonic flow channel of claim 1, wherein: the reflector plate is a stainless steel metal block, and the core tube is a plastic tube.
8. The ultrasonic flow channel of claim 1, wherein: the anti-misoperation positioning structure comprises an anti-misoperation positioning protrusion formed by protruding on the side face of the periphery of the end part of the core tube in the length direction, and the anti-misoperation positioning protrusion is a strip extending along the axial direction of the core tube.
9. The ultrasonic water meter comprises a core pipe and sleeves, wherein the core pipe is inserted and fixed in the sleeves, transducer mounting seats for fixedly mounting ultrasonic transducers are arranged on the sleeves in pairs, and the transducer mounting seats are opposite to the ultrasonic transceiving perforations on the core pipe one by one;
the method is characterized in that: the core tube is the core tube of the ultrasonic flow channel according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222665150.7U CN218443998U (en) | 2022-10-10 | 2022-10-10 | Ultrasonic runner and ultrasonic water meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222665150.7U CN218443998U (en) | 2022-10-10 | 2022-10-10 | Ultrasonic runner and ultrasonic water meter |
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| Publication Number | Publication Date |
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| CN218443998U true CN218443998U (en) | 2023-02-03 |
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| CN202222665150.7U Active CN218443998U (en) | 2022-10-10 | 2022-10-10 | Ultrasonic runner and ultrasonic water meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116499539A (en) * | 2023-03-15 | 2023-07-28 | 杭州山科智能科技股份有限公司 | Ultrasonic water meter and measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116499539A (en) * | 2023-03-15 | 2023-07-28 | 杭州山科智能科技股份有限公司 | Ultrasonic water meter and measuring method |
| CN116499539B (en) * | 2023-03-15 | 2024-01-19 | 杭州山科智能科技股份有限公司 | Ultrasonic water meter and measuring method |
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