CN218600618U

CN218600618U - Built-in transducer and ultrasonic water meter

Info

Publication number: CN218600618U
Application number: CN202222130319.9U
Authority: CN
Inventors: 李建民; 罗明; 彭君; 陈坤
Original assignee: Sanchuan Wisdom Technology Co Ltd
Current assignee: Sanchuan Wisdom Technology Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-03-10
Anticipated expiration: 2032-08-12

Abstract

The utility model provides an internal transducer, which comprises an outer shell, wherein the outer shell is provided with a limiting block, the middle part of one side of the limiting block is provided with a connecting block, the middle part of the other side of the limiting block is provided with an installation cavity, the outer wall of the installation cavity forms a signal excitation surface, and the periphery of the signal excitation surface is provided with an annular isolation groove; the utility model discloses still pass through an internal type ultrasonic water meter, which comprises a housing, install two at least foretell transducers on the watchcase, and the signal excitation face on two relative transducers is parallel to each other. The outer wall of the installation cavity of the transducer forms a signal excitation surface, and the outer periphery of the signal excitation surface is provided with an annular isolation groove, so that the signal excitation surface and the transducer shell are relatively independent, the acoustic wave signals are greatly consumed due to the fact that the wall thickness of the shell is inconsistent everywhere, and the structural consistency of the signal excitation surface is ensured, and the acoustic wave intensity is greatly improved; the limiting block is provided with an outward-expanding abdicating groove on the front surface of the signal excitation surface to prevent blocking the transmission of sound waves.

Description

Built-in transducer and ultrasonic water meter

Technical Field

The utility model belongs to the technical field of ultrasonic water meter and specifically relates to indicate an interior built-in transducer and ultrasonic water meter.

Background

The ultrasonic water meter is a full electronic meter, and the flow is calculated by detecting the time difference generated by the forward and backward flow flight time of ultrasonic beams in water due to the speed difference, wherein an ultrasonic transducer is a key for directly influencing the metering precision of the ultrasonic water meter. At present, most of transducers of the ultrasonic water meter are installed from outside to inside, so that the transducers are usually concave on the inner wall of a water meter shell, and a cavity is formed. This cavity will cause turbulence in the water flow and cause impurities to accumulate, which affects the accuracy of the measurement.

In contrast, in the ultrasonic water meter disclosed in CN215177950U, the transducer is mounted from the inside of the meter case, and the number of transducer mounting bases is reduced, so that the meter case can be more easily processed. However, the transducer of the structure protrudes more from the inner wall of the shell, so that the pressure loss and the turbulence are increased.

Therefore, it is an urgent need to design a built-in transducer and an ultrasonic water meter.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to provide an interior mounted transducer and ultrasonic water meter avoids piling up of the impurity of turbulent production, and has the characteristics that ultrasonic signal intensity is high. In order to achieve the above purpose, the utility model adopts the following technical scheme:

(II) technical scheme

The utility model provides an interior mounted transducer, includes the shell, the shell is equipped with the stopper, stopper one side middle part is equipped with the connecting block, opposite side middle part is equipped with the installation cavity, the outer wall of installation cavity forms the signal and stimulates the face, signal stimulates face periphery and is equipped with annular isolation tank.

Furthermore, the signal arouses the personally submitting slope form and part invaginate in the surface of stopper, the stopper is in the front of signal arouse the face is opened there is the groove of stepping down.

Furthermore, the abdicating groove is in an outward expansion shape.

Furthermore, the outer surface of the limiting block is provided with a flow guide block on the back of the signal excitation surface.

Further, the end of the connecting block is open and communicated with the mounting cavity.

Furthermore, the limiting block is provided with a sealing groove at the periphery of the bottom of the connecting block.

Furthermore, one side of the limiting block, which is close to the connecting block, is provided with a positioning groove.

Further, the limiting block is saddle-shaped.

The built-in ultrasonic water meter comprises a meter shell, wherein at least two transducers are arranged on the meter shell, and signal excitation surfaces on the two opposite transducers are parallel to each other.

Furthermore, the top of the connecting block of the transducer is provided with threads, and the connecting block penetrates through the watch case and is in threaded connection with the nut.

(III) advantageous effects

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly:

1. the installation cavity outer wall of transducer forms the signal face of arousing, and the signal arouses the face periphery and is equipped with annular isolation tank, makes the signal face of arousing and transducer shell relatively independent, avoids shell wall thickness nonconformity everywhere and makes the sound wave signal by a large amount of consumptions, ensures the structure uniformity of signal face of arousing to the sound wave intensity has been improved greatly.

2. The signal excitation surface is inclined, so that the installation distance between the two transducers is increased, and the measurement accuracy is improved; the signal excitation surface part is sunk to the outer surface of the limiting block, so that the protruding degree of the transducer in the water meter shell is reduced, the pressure loss is reduced, and the generation of turbulent flow is reduced; furthermore, the limiting block is provided with a yielding groove in the front of the signal excitation surface, the yielding groove is in an outward expansion shape, the transmission of sound waves is prevented from being blocked, and meanwhile, when the water flow of the water meter is fast, the sound waves can generate certain radian, and the sound waves can be better received through outward expansion.

3. The limiting block is provided with a sealing groove at the periphery of the bottom of the connecting block, and a sealing ring is arranged in the sealing groove; when the energy converter is arranged on the water meter, the sealing ring can effectively ensure the sealing property between the energy converter and the meter shell, and because the built-in type is adopted, when the water pressure in the water meter is higher, the pressure generated on the limiting block is higher, the sealing ring is more tightly attached to the inner wall of the meter shell, and the sealing property is better; the limiting block is saddle-shaped, so that the limiting block can be more attached to the inner wall of the watch case, and the mounting stability and the sealing property are improved; the shape of seal groove should also follow the stopper this moment, guarantees the uniformity of seal groove degree of depth to guarantee the leakproofness.

4. The top of the connecting block of the transducer is provided with threads, the bottom of the connecting block is connected with the limiting block, and the transducer can be fixed on the shell of the water meter when the nut is connected to the top of the connecting block in a threaded manner, so that the installation is finished, and the whole process is convenient and rapid; the watchcase is equipped with the lag outward, and this lag circumference parcel watchcase and hold into with the nut, make nut and external isolation, play rust-resistant effect promptly, avoid lawless persons again to carry out the emergence dismantled to the transducer from the outside.

Drawings

The invention will be further described with reference to the following examples and drawings.

FIG. 1 is a schematic view of the top structure of the housing;

FIG. 2 is a schematic view of the bottom structure of the housing;

FIG. 3 is a side view of the housing;

FIG. 4 is a schematic cross-sectional view of a transducer;

FIG. 5 is an enlarged partial view at I of FIG. 4;

figure 6 is a cross-sectional schematic view of the case with the transducer mounted.

The reference numbers illustrate:

1. a housing;	101. a limiting block;
		102. connecting blocks;	103. a mounting cavity;
104. a signal excitation surface;	105. an isolation trench;
		106. a flow guide block;	107. a sealing groove;
108. positioning a groove;	109. a yielding groove;
		110. a ceramic plate;	111. a lead wire;
112. sealing;	2. a watch case;
		3. a nut;	4. and (6) protecting the jacket.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 5, an internal transducer includes a housing 1, the housing 1 has a limiting block 101, a connecting block 102 is disposed in a middle portion of one side of the limiting block 101, and a mounting cavity 103 is disposed in a middle portion of the other side of the limiting block 101, wherein the connecting block 102 is used for fixing the transducer from outside, the limiting block 101 is used for fixing the transducer in a case 2, and related parts for exciting ultrasonic signals are mounted in the mounting cavity 103; the outer wall of installation cavity 103 forms signal excitation face 104, signal excitation face 104 periphery is equipped with annular isolating groove 105, makes signal excitation face 104 relatively independent with shell 1, avoids shell 1 each department wall thickness inconsistent and makes the sound wave signal by a large amount of consumptions, ensures signal excitation face 104's structural uniformity to the sound wave intensity has been improved greatly.

It is worth mentioning that the signal excitation surface 104 is inclined, so that the installation distance between the two transducers is increased, and the measurement accuracy is improved; the signal excitation surface 104 is partially sunken in the outer surface of the limiting block 101, so that the protruding degree of the transducer in the water meter shell is reduced, the pressure loss is reduced, and the generation of turbulence is reduced;

furthermore, as shown in fig. 1 and 4, the front surface of the signal excitation surface 104 of the limiting block 101 is provided with a yielding groove 109, and the yielding groove 109 is in an outward-expanding shape to prevent blocking of transmission of sound waves; meanwhile, when the water flow of the water meter is fast, the sound waves can generate a certain radian, and the sound waves can be better received by outward expansion.

In the above scheme, since the signal excitation surface 104 is inclined, in order to prevent the water flow behind the signal excitation surface from generating turbulence and a cavity, the guide block 106 is arranged on the back surface of the signal excitation surface 104 on the outer surface of the limiting block 101; on the other hand, since the signal excitation surface 104 is installed against the water flow, the flow guide block 106 can also function as a reinforcing rib, thereby improving the strength of the transducer housing 1.

It should be noted that the outer periphery of the bottom of the connecting block 102 of the limiting block 101 is provided with a sealing groove 107, and a sealing ring is installed in the sealing groove 107; when the transducer was installed on the water gauge, the leakproofness between transducer and the watchcase can effectively be ensured to the sealing washer, and owing to adopt built-in formula, when water pressure in the water gauge is big more, also big more to the pressure that stopper 101 produced, just also make the sealing washer laminate at the watchcase inner wall more closely, and the leakproofness is also just better.

Preferably, the limiting block 101 is saddle-shaped, so that the limiting block can be more attached to the inner wall of the watch case, and the mounting stability and the sealing performance are improved; of course, the shape of the sealing groove 107 should follow the limiting block 101 at this time, so as to ensure the depth consistency of the sealing groove 107, and thus ensure the sealing performance.

It can be understood that a positioning groove 108 is formed on one side of the limiting block 101 close to the connecting block 102, so that the transducer can be conveniently installed and positioned, and therefore, the two signal excitation surfaces 104 can be ensured to be parallel to each other.

The transducer needs to be installed in the water meter for use, therefore the utility model also provides an internal ultrasonic water meter, as shown in fig. 6, including watchcase 2, install two at least above-mentioned transducers on watchcase 2, and the signal excitation face 104 on two relative transducers is parallel to each other to realize signal exchange. Specifically, as shown in fig. 4, an opening is formed in an end of the connecting block 102 and is communicated with the mounting cavity 103, the ceramic chip 110 is placed into the mounting cavity 103 through the opening of the connecting block 102 and is attached to the signal excitation surface 104, the other side of the ceramic chip 110 is connected with the lead 111, and the mounting cavity 103 is filled with sealing glue to ensure the sealing performance of the transducer; during installation, the positioning groove 108 is aligned to the positioning block on the inner wall of the watch case 2, the connecting block 102 penetrates through the watch case 2, and the top of the connecting block 102 of the transducer is provided with threads, and the bottom of the connecting block is connected with the limiting block 101, so that the transducer can be fixed on the watch case 2 when the nut 3 is in threaded connection with the top of the connecting block 102, installation is completed, and the whole process is convenient and fast.

For preventing steam from corroding nut 3, watchcase 2 is equipped with lag 4 outward, and this lag 4 circumference parcel watchcase 2 and hold nut 3 into in, make nut 3 keep apart with the external world, play rust-resistant effect promptly, avoid lawless persons again to carry out the emergence dismantled from the outside to the transducer.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A built-in transducer comprising a housing (1), characterized in that: the shell (1) is equipped with stopper (101), stopper (101) one side middle part is equipped with connecting block (102), opposite side middle part is equipped with installation cavity (103), the outer wall of installation cavity (103) forms signal excitation face (104), signal excitation face (104) periphery is equipped with annular isolating groove (105).

2. The built-in transducer according to claim 1, wherein: the signal arouses face (104) to be the slope form and partly invaginate in the surface of stopper (101), stopper (101) are in the front of signal arouse face (104) is opened has abdicating groove (109).

3. The built-in transducer according to claim 2, wherein: the abdicating groove (109) is in an outward expanding shape.

4. The built-in transducer according to claim 2, wherein: the outer surface of the limiting block (101) is provided with a flow guide block (106) on the back of the signal excitation surface (104).

5. The built-in transducer according to claim 1, wherein: the end of the connecting block (102) is open and is communicated with the mounting cavity (103).

6. The built-in transducer according to claim 1, wherein: the limiting block (101) is provided with a sealing groove (107) at the periphery of the bottom of the connecting block (102).

7. The built-in transducer according to claim 1, wherein: one side of the limiting block (101) close to the connecting block (102) is provided with a positioning groove (108).

8. The built-in transducer according to claim 1, wherein: the limiting block (101) is saddle-shaped.

9. An internal ultrasonic water meter, which is characterized in that: comprising a case (2) on which at least two transducers according to any of claims 1-8 are mounted, the signal excitation surfaces (104) of two opposite transducers being parallel to each other.

10. The built-in ultrasonic water meter as set forth in claim 9, wherein: the top of a connecting block (102) of the transducer is provided with threads, and the connecting block (102) penetrates through the watch case (2) and is in threaded connection with a nut (3).