CN216050084U

CN216050084U - Ultrasonic measurement module and ultrasonic measurement meter

Info

Publication number: CN216050084U
Application number: CN202122094294.7U
Authority: CN
Inventors: 王志峰; 单加维; 陈红军
Original assignee: Beijing Redian Data Technology Co ltd
Current assignee: Beijing Shenglian Technology Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-03-15
Anticipated expiration: 2031-09-01

Abstract

The utility model discloses an ultrasonic measuring module and an ultrasonic measuring meter, wherein the ultrasonic measuring module comprises a pipe section, a mounting piece, an ultrasonic transducer and a sealing cover, wherein the side wall of the pipe section is provided with a mounting groove, the mounting piece is mounted on the pipe section and seals the mounting groove, the mounting piece is provided with a connecting channel communicated with the pipe section, the ultrasonic transducer is arranged on the mounting piece, ultrasonic waves emitted by the ultrasonic transducer can reach the pipe section through the connecting channel, and the sealing cover is buckled on the mounting piece. The ultrasonic measurement module has the function of better shielding electromagnetic interference, and ensures the measurement stability and accuracy.

Description

Ultrasonic measurement module and ultrasonic measurement meter

Technical Field

The utility model relates to the technical field of measuring instruments, in particular to an ultrasonic measuring module and an ultrasonic measuring instrument.

Background

As shown in fig. 1, the ultrasonic gas meter generally comprises a meter case 1 ', a measuring module, a valve assembly 3', and the like. The measuring module comprises a pipe section 21 ' and an ultrasonic transducer 22 ' arranged on the pipe section 21 '. The ultrasonic gas meter measures the propagation time of the ultrasonic signal between the two ultrasonic transducers 22' to indirectly measure the flow rate of the gas, and then converts the flow rate into the volume of the gas flowing through the measuring module. The quality of the received ultrasonic signal is the basis of the whole measurement, in the gas medium, the ultrasonic signal is significantly attenuated in the propagation process, and the electric signal received by the ultrasonic transducer 22' is very weak, only in mV level. The ultrasonic transducer 22 'and the parts for fixing the ultrasonic transducer in the prior art are not subjected to electromagnetic shielding treatment, and are directly exposed in the meter shell 1', so that the ultrasonic transducer is easily interfered by an external electromagnetic field, and the measurement stability and the accuracy of the ultrasonic gas meter are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The first objective of the present invention is to provide an ultrasonic measurement module, which has a function of shielding electromagnetic interference well, and ensures measurement stability and accuracy.

The second objective of the present invention is to provide an ultrasonic measuring meter, which has a function of shielding electromagnetic interference well, and ensures measurement stability and accuracy.

In order to achieve the technical effects, the technical scheme of the utility model is as follows:

the utility model discloses an ultrasonic measuring module, comprising: the side wall of the pipe section is provided with a mounting groove; the mounting piece is mounted on the pipe section and seals the mounting groove, and a connecting channel communicated with the pipe section is arranged on the mounting piece; the ultrasonic transducer is arranged on the mounting piece, and ultrasonic waves emitted by the ultrasonic transducer can reach the pipe section through the connecting channel; and the sealing cover is buckled on the mounting piece.

In some embodiments, the sealing cover is provided with an outlet hole, and the outlet hole is provided with an electromagnetic shielding sealing member for preventing external electromagnetic interference from entering the sealing cover through the outlet hole.

In some embodiments, the ultrasonic measurement module further comprises a mounting seat, the mounting seat is arranged in the sealing cover and is in press fit with the ultrasonic transducer, and a circuit board electrically connected with the ultrasonic transducer is further arranged on the mounting seat.

In some specific embodiments, a limiting protrusion is arranged on the mounting seat, and the limiting protrusion is in press fit with the ultrasonic transducer.

In some specific embodiments, a fixing column is arranged on the mounting seat, and the mounting seat is connected to the mounting piece through a first fixing piece penetrating through the fixing column.

In some embodiments, two opposite side walls of the mounting groove are provided with stopping steps, and the mounting member is provided with an insertion part inserted into the mounting groove and a stopping part stopping on the stopping steps.

In some embodiments, the outer side wall of the pipe section is provided with a mounting lug, and the pipe section is connected to the mounting piece through a second fixing piece penetrating into the mounting lug.

In some embodiments, the mounting member is provided with a fitting groove communicating with the connection channel, and the ultrasonic transducer is fitted in the fitting groove.

In some embodiments, the mounting member is provided with a protrusion portion protruding toward the sealing cover, and the sealing cover is provided with a groove portion engaged with the protrusion portion.

The utility model also discloses an ultrasonic measuring meter which comprises a shell and the ultrasonic measuring module, wherein the ultrasonic measuring module is arranged in the shell.

The ultrasonic measurement module has the beneficial effects that: the sealing cover and the mounting piece form an electromagnetic shielding structure, and the electromagnetic interference shielding function is achieved, so that adverse effects of external electromagnetic interference on the measurement accuracy and stability of the ultrasonic measurement module are avoided.

The ultrasonic measuring meter has the beneficial effects that: due to the ultrasonic measuring module, the ultrasonic measuring meter has the function of better shielding electromagnetic interference, and the measuring stability and accuracy are ensured

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic structural diagram of an ultrasonic gas meter of the prior art;

FIG. 2 is a schematic structural diagram of an ultrasonic measurement module according to an embodiment of the utility model;

FIG. 3 is a cross-sectional schematic view of an ultrasonic measurement module of an embodiment of the utility model;

FIG. 4 is a schematic structural view of a pipe section of an ultrasonic measurement module according to an embodiment of the utility model;

FIG. 5 is a schematic structural view of a mounting member of an ultrasonic measurement module of an embodiment of the utility model;

FIG. 6 is another schematic structural view of a mounting member of an ultrasonic measurement module according to an embodiment of the utility model;

fig. 7 is a schematic structural diagram of a mounting seat of an ultrasonic measurement module according to an embodiment of the present invention.

Reference numerals:

in fig. 1:

1', a watch case; 21', a pipe section; 22', an ultrasonic transducer; 3' valve assembly

In fig. 2-7:

1. a pipe section; 11. mounting grooves; 111. stopping the step; 12. mounting lugs;

2. a mounting member; 21. a connecting channel; 22. a mating groove; 23. a plug-in part; 24. a stopping part; 25. a boss portion;

3. an ultrasonic transducer;

4. a sealing cover; 41. a wire outlet hole; 42. a groove part;

5. a mounting seat; 51. a limiting bulge; 52. and (5) fixing the column.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific structure of the ultrasonic measuring module of the embodiment of the present invention is described below with reference to fig. 2 to 3.

The utility model discloses an ultrasonic measuring module, as shown in fig. 2-3, the ultrasonic measuring module of the embodiment comprises a pipe section 1, a mounting piece 2, an ultrasonic transducer 3 and a sealing cover 4, wherein the side wall of the pipe section 1 is provided with a mounting groove 11, the mounting piece 2 is mounted on the pipe section 1 and seals the mounting groove 11, the mounting piece 2 is provided with a connecting channel 21 communicated with the pipe section 1, the ultrasonic transducer 3 is arranged on the mounting piece 2, ultrasonic waves emitted by the ultrasonic transducer 3 can reach the pipe section 1 through the connecting channel 21, and the sealing cover 4 is buckled on the mounting piece 2.

It will be appreciated that during the actual measurement process, the ultrasonic waves emitted by the ultrasonic transducer 3 can reach the pipe section 1 through the connecting channel 21. The sealing cap 4 and the mounting member 2 seal the ultrasonic transducer 3 in a single space, and the ultrasonic transducer 3 is not exposed when the ultrasonic measuring module of the present embodiment is mounted inside the case of the ultrasonic measuring meter. That is to say, the sealing cover 4 and the mounting part 2 constitute an electromagnetic shielding structure, and the electromagnetic interference shielding function is achieved, so that adverse effects of external electromagnetic interference on the measurement accuracy and stability of the ultrasonic measurement module are avoided.

Optionally, the pipe section 1 is made of plastic, and is produced in an injection molding mode, so that the cost can be reduced.

Optionally, the mounting member 2 and the sealing cover 4 are made of materials having an anti-electromagnetic interference function, especially having a strong shielding function on low-frequency electromagnetism, and can be made of materials such as aluminum and aluminum alloy, copper and copper alloy, iron, stainless steel, ferrite, and the specific materials can be selected according to actual needs.

Optionally, the mounting member 2 and the sealing cover 4 may be manufactured by machining or metal die casting, which may reduce the usage of the electromagnetic shielding material and the cost.

In some embodiments, as shown in fig. 2, the sealing cap 4 is provided with an outlet hole 41, and the outlet hole 41 is provided with an electromagnetic shielding sealing member. The wire outlet hole 41 is used for leading out a module data connecting wire, and in the wiring process, the wire outlet hole 41 can be sealed by adopting an electromagnetic shielding sealing piece, so that an electromagnetic signal interfered outside is prevented from leaking into the wire outlet hole 41, the electromagnetic shielding effect of the ultrasonic measuring module of the embodiment is further improved, and the measuring accuracy and stability of the ultrasonic measuring module are ensured.

Optionally, the material of the electromagnetic shielding sealing element may be conductive material such as aluminum, copper, or nano silver paste, and may be specifically selected according to actual needs.

In some embodiments, as shown in fig. 3, the ultrasonic measurement module further includes a mounting seat 5, the mounting seat 5 is disposed in the sealing cover 4 and is pressed on the ultrasonic transducer 3, and a circuit board electrically connected to the ultrasonic transducer 3 is further disposed on the mounting seat 5. It can be understood that the mounting seat 5 is pressed on the ultrasonic transducer 3, so that the stability of the ultrasonic transducer 3 between the mounting part 2 and the sealing cover 4 can be ensured, and the measurement error caused by the shaking of the ultrasonic transducer 3 is avoided.

It should be noted that, if the circuit board is disposed outside the entire ultrasonic measurement module, the degree of integration of the ultrasonic measurement module is reduced, which is not favorable for assembly and use. And install the circuit board on mount pad 5 in this embodiment, can enough conveniently control ultrasonic transducer 3, can promote ultrasonic measurement module's the degree of integrating again, convenient equipment and use. In addition, the circuit board is placed inside the sealing cover 4, so that the adverse effect of an external electromagnetic signal on the circuit board can be avoided, and the use reliability of the ultrasonic measuring module is further ensured.

In some specific embodiments, as shown in fig. 7, the mounting base 5 is provided with a limiting protrusion 51, and the limiting protrusion 51 is pressed on the ultrasonic transducer 3. It can be understood that the additionally arranged limiting protrusion 51 can improve the pressing effect of the mounting base 5 on the ultrasonic transducer 3, and the stability of the ultrasonic transducer 3 is ensured to the maximum extent, so that the measurement error caused by the shaking of the ultrasonic transducer 3 is avoided.

It should be noted that, the main function of the limiting protrusions 51 is to press the ultrasonic transducer 3, so long as the function of pressing is achieved, the number, the cross-sectional shape and the distribution mode of the limiting protrusions 51 are not limited herein, and may be selected according to actual requirements in the actual design process.

In some specific embodiments, as shown in fig. 7, a fixing pillar 52 is disposed on the mounting base 5, and the mounting base 5 is connected to the mounting member 2 through a first fixing member penetrating the fixing pillar 52. It will be appreciated that if the mounting 5 is less stable within the sealing cap 4 and mounting member 2, the compression effect on the ultrasonic transducer 3 will be reduced. In this embodiment, connect on installed part 2 through the first mounting of wearing to establish in fixed column 52, ensured the connection stability of mount pad 5 on the one hand to indirect ultrasonic transducer 3's stability of having guaranteed, on the other hand adopts the connected mode of first mounting to simplify the structure of mount pad 5 and installed part 2, made things convenient for user group's dress and dismantlement.

It should be additionally noted that in the embodiment of the present invention, the first fixing member may be a screw, a pin, or other connecting members according to actual needs.

Advantageously, fixed post 52 is a plurality of spaced apart fixed posts, and each fixed post 52 has a first fastener engaged therein. Therefore, the mounting seat 5 is fixed by the aid of the first fixing pieces, and stability of the mounting seat 5 is improved to the maximum extent.

In some embodiments, as shown in fig. 4, two opposite side walls of the mounting groove 11 are provided with stop steps 111, and as shown in fig. 6, the mounting member 2 is provided with an insertion portion 23 inserted into the mounting groove 11 and a stop portion 24 stopping on the stop steps 111. It can be understood that, after the installation part 2 is installed on the pipe section 1, the insertion part 23 is inserted in the installation groove 11, the abutting part 24 abuts against the abutting step 111, and the installation part 2 abuts against the outer side wall of the pipe section 1, so that two steps are formed at the joint of the installation part 2 and the pipe section 1, the connection sealing performance of the installation part 2 and the pipe section 1 is greatly improved, and the phenomenon that gas escapes from the joint of the installation part 2 and the pipe section 1 in the measurement process is avoided.

Advantageously, the joint between the mounting member 2 and the pipe section 1 is provided with a sealing compound. Therefore, the connection sealing performance of the installation part 2 and the pipe section 1 is further improved, the phenomenon that gas escapes from the connection part of the installation part 2 and the pipe section 1 in the measuring process is avoided, and the measuring accuracy and stability are ensured.

In some embodiments, as shown in fig. 4, the outer side wall of the pipe segment 1 is provided with a mounting ear 12, and the pipe segment 1 is connected to the mounting member 2 by a second fixing member provided in the mounting ear 12. It can be understood that the second fixing piece is connected to the mounting piece 2 through the mounting lug 12, so that the connection stability and connection tightness of the pipe section 1 and the mounting piece 2 can be improved, the phenomenon that gas escapes from the connection part of the mounting piece 2 and the pipe section 1 in the measuring process is avoided, and the measuring accuracy and stability are ensured.

Preferably, the mounting ears 12 are plural, and the plural mounting ears 12 are provided on both sides of the pipe section 1 at intervals. Thereby, the connection stability and connection sealing performance of the pipe section 1 and the mounting member 2 are further improved.

In some embodiments, the mounting member 2 is provided with a fitting groove 22 communicating with the connection passage 21, and the ultrasonic transducer 3 is fitted in the fitting groove 22. It will be appreciated that the fitting of the ultrasonic transducer 3 in the fitting groove 22 ensures, on the one hand, the stability of the ultrasonic transducer 3 and, on the other hand, prevents the ingress of measurement gas into the sealing cap 4 from the assembly gap between the ultrasonic transducer 3 and the mounting part 2.

Preferably, the ultrasonic transducer 3 is interference-fitted with the fitting groove 22.

In some embodiments, the mounting member 2 is provided with a protrusion 25 protruding toward the sealing cover 4, and the sealing cover 4 is provided with a groove 42 engaged with the protrusion 25. It can be understood that the fitting manner of the protruding portion 25 and the groove portion 42 can improve the connection stability and connection sealing performance of the mounting member 2 and the sealing cover 4, thereby preventing external electromagnetic interference from entering the sealing cover 4 from the connection gap between the sealing cover 4 and the protruding portion 25. Meanwhile, the matching of the protruding portion 25 and the groove portion 42 can also be used as the pre-positioning matching of the sealing cover 4 and the mounting piece 2, and the subsequent connection of the two by adopting connecting pieces such as screws and pins is facilitated.

Example (b):

as shown in fig. 2 to 3, the ultrasonic measurement module of the present embodiment includes a pipe section 1, a mounting member 2, an ultrasonic transducer 3, a sealing cover 4, and a mounting seat 5, wherein a mounting groove 11 is disposed on a side wall of the pipe section 1, and two opposite side walls of the mounting groove 11 are provided with stop steps 111. Four mounting lugs 12 are arranged on the outer wall of the pipe section 1, wherein two mounting lugs 12 are positioned on the same side and are distributed at intervals. A second fixing member is arranged in each mounting ear 12 and connected with the mounting member 2. The mounting piece 2 is mounted on the pipe section 1 and seals the mounting groove 11, the mounting piece 2 is provided with an inserting part 23, a stopping part 24 and a protruding part 25, the inserting part 23 is inserted into the mounting groove 11, and the stopping part 24 stops against the stopping step 111. The mounting piece 2 is further provided with two matching grooves 22, the bottom walls of the matching grooves 22 are provided with connecting channels 21 communicated with the pipe section 1, and an included angle is formed between the bottom walls of the matching grooves 22 and the axis of the pipe section 1. The number of ultrasonic transducers 3 is two, and each ultrasonic transducer 3 is located in one of the fitting grooves 22. The mounting seat 5 is arranged in the sealing cover 4, two limiting protrusions 51 and four fixing columns 52 are arranged on the mounting seat 5, the two limiting protrusions 51 are respectively connected to the two ultrasonic transducers 3 in a pressing mode, and a first fixing piece is arranged in each fixing column 52 in a penetrating mode and connected with the mounting piece 2. The sealing cover 4 is provided with a wire outlet hole 41, and an electromagnetic shielding sealing piece is arranged in the wire outlet hole 41. The seal cover 4 is provided with a groove portion 42 engaged with the boss portion 25. The sealing cover 4 is connected to the mounting member 2 by a third fixing member. The first fixing piece, the second fixing piece and the third fixing piece are all screws.

The ultrasonic measurement module of the embodiment has the beneficial effects that:

firstly, the method comprises the following steps: the sealing cover 4 and the mounting piece 2 form an electromagnetic shielding structure, and the electromagnetic interference shielding function is achieved, so that the adverse effect of external electromagnetic interference on the measurement accuracy and stability of the ultrasonic measurement module is avoided;

secondly, the method comprises the following steps: the mounting seat 5 is provided with the limiting protrusion 51, and the limiting protrusion 51 is pressed on the ultrasonic transducer 3, so that the stability of the ultrasonic transducer 3 can be ensured, the measurement error caused by the shaking of the ultrasonic transducer 3 can be avoided, and the electromagnetic interference can be prevented from entering the sealing cover 4 from the mounting gap between the ultrasonic transducer 3 and the mounting seat 5;

thirdly, the method comprises the following steps: simple structure and convenient installation.

The utility model also discloses an ultrasonic measuring meter which comprises a shell and the ultrasonic measuring module, wherein the ultrasonic measuring module is arranged in the shell. Due to the ultrasonic measuring module, the ultrasonic measuring meter has the function of better shielding electromagnetic interference, and the measuring stability and accuracy are ensured.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. An ultrasonic measurement module, comprising:

the pipe comprises a pipe section (1), wherein a mounting groove (11) is formed in the side wall of the pipe section (1);

the mounting piece (2) is mounted on the pipe section (1) and seals the mounting groove (11), and a connecting channel (21) communicated with the pipe section (1) is arranged on the mounting piece (2);

the ultrasonic transducer (3) is arranged on the mounting piece (2), and ultrasonic waves emitted by the ultrasonic transducer (3) can reach the pipe section (1) through the connecting channel (21);

and the sealing cover (4) is buckled on the mounting piece (2).

2. The ultrasonic measurement module according to claim 1, wherein the sealing cover (4) is provided with an outlet hole (41), and an electromagnetic shielding sealing member is provided in the outlet hole (41), and the electromagnetic shielding sealing member is used for preventing external electromagnetic interference from entering the sealing cover (4) through the outlet hole (41).

3. The ultrasonic measurement module according to claim 1, further comprising a mounting seat (5), wherein the mounting seat (5) is arranged in the sealing cover (4) and is pressed on the ultrasonic transducer (3), and a circuit board electrically connected with the ultrasonic transducer (3) is arranged on the mounting seat (5).

4. An ultrasonic measuring module according to claim 3, characterized in that the mounting seat (5) is provided with a limiting protrusion (51), and the limiting protrusion (51) is pressed on the ultrasonic transducer (3).

5. The ultrasonic measurement module according to claim 3, wherein the mounting base (5) is provided with a fixing column (52), and the mounting base (5) is connected to the mounting member (2) through a first fixing member penetrating into the fixing column (52).

6. The ultrasonic measuring module according to claim 1, wherein two opposite side walls of the mounting groove (11) are provided with stop steps (111), and the mounting member (2) is provided with an insertion portion (23) inserted into the mounting groove (11) and a stop portion (24) stopped on the stop steps (111).

7. The ultrasonic measuring module according to claim 1, characterized in that the outer side wall of the pipe section (1) is provided with a mounting ear (12), and the pipe section (1) is connected to the mounting member (2) through a second fixing member inserted into the mounting ear (12).

8. The ultrasonic measurement module according to claim 1, wherein the mounting member (2) is provided with a fitting groove (22) communicating with the connection channel (21), the ultrasonic transducer (3) being fitted in the fitting groove (22).

9. The ultrasonic measurement module according to claim 1, wherein the mounting member (2) is provided with a protrusion (25) protruding towards the sealing cap (4), and the sealing cap (4) is provided with a groove portion (42) cooperating with the protrusion (25).

10. An ultrasonic measuring meter, comprising a housing and an ultrasonic measuring module according to any one of claims 1 to 9, which is arranged inside the housing.