Ultrasonic transducer mounting structure for intelligent water meter

Abstract

The utility model relates to the technical field of ultrasonic water meter manufacturing, in particular to an ultrasonic transducer mounting structure for an intelligent water meter, which comprises a meter body and a water flow metering module. The water flow metering module is mainly composed of an upstream ultrasonic assembly and a downstream ultrasonic assembly. The upstream ultrasonic assembly comprises an upstream mounting base and an upstream ultrasonic transducer. The upstream mounting seat and the meter body are assembled into a whole in an embedded manner, so that the assembly clearance is controlled within a reasonable value range; in addition, after the upstream mounting seat is embedded, the neck part and the root part of the upstream mounting seat are circumferentially held by the meter body. In specific application, even if the ultrasonic transducer is subjected to water impact force, the relative position of the upstream mounting seat is always kept unchanged, and the root of the upstream mounting seat does not deflect back and forth, so that the mounting position precision of the upstream ultrasonic transducer is ensured, and the ultrasonic water meter can obtain excellent measurement precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic water meter manufacturing technical field especially a kind of ultrasonic transducer mounting structure for intelligent water meter. BACKGROUND

[0002] Ultrasonic water meter is a new type of water meter by detecting the time difference generated when ultrasonic beam propagates in water downstream and upstream due to speed change, analysis and processing to obtain the flow velocity of water, to further calculate the flow of water.

[0003] Ultrasonic water meter is mainly composed of several parts such as meter body, water flow measurement module, power module and communication module. The water flow measurement module includes two ultrasonic transducers, and occupies the upstream and downstream of water flow respectively. The time difference occurs when the ultrasonic beams emitted by the two ultrasonic transducers propagate in water downstream and upstream, which reflects the water flow rate. Generally, the ultrasonic transducer is assembled with the meter body by the mounting seat. Specifically, first, a plurality of ultrasonic transducers are assembled in the cavity of the mounting seat, and then the mounting seat is inserted into the meter body as a whole, and is locked and fixed by the fastening screw. The tail end of the mounting seat is freely suspended and is not constrained, so that the stability of the mounting position depends on the fastening screw. However, in actual application, the mounting seat is subjected to the impact force of flowing water. Over a long period of time, the fastening screw is prone to loosen, which will inevitably cause the ultrasonic transducer to perform high-frequency micro-distance reciprocating swing motion with the mounting seat. As a result, on the one hand, the installation position accuracy of the ultrasonic transducer cannot be guaranteed, and the emission angle of each ultrasonic beam is seriously deviated from the expected value, which will inevitably affect the measurement accuracy of water flow. On the other hand, the fastening screw is easily detached from the meter body due to long-term impact, which will inevitably affect the fixing reliability of the mounting seat, and ultimately affect the service life and durability of the ultrasonic water meter. Therefore, it is urgent for technical personnel to solve the above problems. SUMMARY

[0004] Therefore, in view of the above problems and defects, the subject research and development group collects relevant data, evaluates and considers from multiple aspects, and finally leads to the emergence of the ultrasonic transducer mounting structure for intelligent water meter through continuous experiments and modifications by the subject research and development group.

[0005] To solve the above technical problems, the utility model relates to a kind of ultrasonic transducer mounting structure for intelligent water meter, including meter body and water flow measurement module.Water flow measurement module is based on Doppler effect to measure the flow of water, it includes upstream ultrasonic assembly and downstream ultrasonic assembly.Upstream ultrasonic assembly and downstream ultrasonic assembly are with meter body as assembly basis, and two respectively occupy in the upstream, downstream of water flow.Upstream ultrasonic assembly and downstream ultrasonic assembly have same configuration.Upstream ultrasonic assembly includes upstream mounting seat and multiple upstream ultrasonic transducers.Upstream mounting seat is embedded with meter body Assembled into one, and there are multiple installation holes for upstream ultrasonic transducer along its circumferential sidewall linear array When upstream mounting seat is embedded, its neck and root are held by meter body circumferentially.

[0006] As further improvement of the disclosed technical scheme of the utility model, along the direction from top to bottom, upstream mounting seat is sequentially connected by large diameter head section, main body section and reduced diameter tail section.In the meter body, upstream plug-in cavity for installing upstream mounting seat is formed.Along the direction from top to bottom, upstream plug-in cavity is sequentially combined by upper avoiding hole, middle reduced diameter holding hole, lower avoiding hole and lower reduced diameter holding hole.The inner diameter values of upper avoiding hole, middle reduced diameter holding hole, lower avoiding hole and lower reduced diameter holding hole are D1, D2, D3 and D4 respectively, and the outer diameter values of main body section and reduced diameter tail section are D5 and D6 respectively, then D4 < D2, D2 < D1, D2 < D3, 0.03mm ≤ D2-D5 ≤ 0.05mm, 0.03mm ≤ D4-D6 ≤ 0.05mm.When upstream mounting seat is assembled relative to meter body, main body section and reduced diameter tail section are respectively held by middle reduced diameter holding hole and lower reduced diameter holding hole, and large diameter head section is in contact with the bottom of upper avoiding hole.

[0007] As further improvement of the disclosed technical scheme of the utility model, upstream ultrasonic assembly further includes screw assembly.Upstream mounting seat is fixed to meter body by screw assembly.Screw assembly is combined by multiple screws.Hole is formed on large diameter head section for screw to pass through.The number of holes is multiple, and arranged in circular array with the center axis of upstream mounting seat as reference circle.Internal thread hole is formed on the bottom of upper avoiding hole for screw to screw in.

[0008] As further improvement of the disclosed technical scheme of the utility model, upstream ultrasonic assembly further includes cover.Cover is used to cover upper avoiding hole, and upstream mounting seat is hidden.

[0009] As further improvement of the disclosed technical scheme of the utility model, upstream ultrasonic assembly further includes rubber ring.Rubber ring is sleeved on reduced diameter tail section, and it is elastically deformed due to the common extrusion force from reduced diameter tail section and lower reduced diameter holding hole.

[0010] As further improvement of the technical scheme disclosed by the utility model, the upstream ultrasonic assembly further comprises a sealing gasket. The sealing gasket is penetrated by the main body section, and is elastically deformed due to the combined extrusion force from the large-diameter head section and the bottom of the upper avoiding hole.

[0011] In practical application, the intelligent water meter ultrasonic transducer mounting structure disclosed by the utility model achieves the following beneficial technical effects, specifically:

[0012] 1) The upstream mounting seat is preferably assembled into the body in an embedded manner to control the assembly gap within a reasonable range; in addition, when the upstream mounting seat is embedded, the neck and the root are both held by the body in a circumferential direction, so that the rotational freedom in a specific direction is limited to zero; thus, in specific application, even if the upstream mounting seat is subjected to water impact force, the relative position of the upstream mounting seat remains fixed, and the root will not reciprocatingly swing, so that the installation position accuracy of the upstream ultrasonic transducer assembled therein is ensured, the emission angle of each ultrasonic beam meets the expected design, and excellent measurement accuracy of the ultrasonic water meter is achieved.

[0013] 2) Due to the control of the assembly gap and the swing freedom of the upstream mounting seat, even if subjected to excitation force, the mounting seat can be reliably fixed for a long time, so that the service life and durability of the ultrasonic water meter meet the expected design requirements. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a three-dimensional schematic view of the first embodiment of the intelligent water meter ultrasonic transducer mounting structure in the utility model.

[0016] Figure 2 It is a three-dimensional schematic view (hidden line visible state) of the first embodiment of the intelligent water meter ultrasonic transducer mounting structure in the utility model.

[0017] Figure 3 It is a three-dimensional schematic view (parts explosion dispersion state) of the first embodiment of the intelligent water meter ultrasonic transducer mounting structure in the utility model.

[0018] Figure 4is the perspective view of the meter body in the first embodiment of the ultrasonic transducer mounting structure for the intelligent water meter.

[0019] Figure 5 is Figure 4 the top view.

[0020] Figure 6 is Figure 5 the A-A sectional view.

[0021] Figure 7 is the exploded view of the upstream ultrasonic assembly in the first embodiment of the ultrasonic transducer mounting structure for the intelligent water meter.

[0022] Figure 8 is the perspective view of the upstream mounting seat in the first embodiment of the ultrasonic transducer mounting structure for the intelligent water meter.

[0023] Figure 9 is Figure 8 the front view.

[0024] Figure 10 is Figure 1 the top view.

[0025] Figure 11 is Figure 10 the B-B sectional view.

[0026] Figure 12 is the structural schematic view of the second embodiment of the ultrasonic transducer mounting structure for the intelligent water meter.

[0027] Figure 13 is the perspective view of the pressing ring in the second embodiment of the ultrasonic transducer mounting structure for the intelligent water meter.

[0028] 1-meter body; 11-upstream plug-in cavity; 111-upset avoiding hole; 1111-inner threaded hole; 112-middle diameter holding hole; 113-downset avoiding hole; 114-downset diameter holding hole; 12-downstream plug-in cavity; 2-water flow metering module; 21-upstream ultrasonic assembly; 211-upstream mounting seat; 2111-large diameter head section; 21111-through hole; 2112-main body section; 21121-mounting hole; 2113-diameter tail section; 21131-annular groove; 212-upstream ultrasonic transducer; 213-screw assembly; 2131-screw; 214-rubber ring; 215-sealing gasket; 216-closure; 217-pressing ring; 2171-outer thread; 2172-pressing groove; 22-downstream ultrasonic assembly. DETAILED DESCRIPTION

[0029] In the description of the utility model, it is understood that the terms "left", "right", "front", "back", "up", "down" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0030] The content of the utility model will be further described in detail below in combination with specific embodiments, Figure 1 、 Figure 2 、 Figure 3 The utility model discloses an ultrasonic transducer mounting structure for intelligent water meter, which is shown in the stereographic diagram in different states of the first embodiment, and can be known that it is mainly composed of a meter body 1 and a water flow metering module 2. The water flow metering module 2 is built-in the meter body 1, which measures the flow of water based on the Doppler effect, and includes an upstream ultrasonic assembly 21 and a downstream ultrasonic assembly 22. The upstream ultrasonic assembly 21 and the downstream ultrasonic assembly 22 are assembled with the meter body 1 as the assembling basis, and occupy the upstream and downstream of the water flow respectively.

[0031] As shown in Figure 3 , the upstream ultrasonic assembly 21 and the downstream ultrasonic assembly 22 have the same structure. As shown in Figure 7 , the upstream ultrasonic assembly 21 includes an upstream mounting seat 211 and a plurality of upstream ultrasonic transducers 212. The upstream mounting seat 211 is assembled with the meter body 1 in the embedded manner, and is used as the mounting basis by the plurality of upstream ultrasonic transducers 212.

[0032] As shown in Figure 8 、 9 , along the direction from top to bottom, the upstream mounting seat 211 is sequentially connected by a large-diameter head section 2111, a main body section 2112 and a reduced-diameter tail section 2113. As shown in Figure 4 、 5 , 6, the upstream mounting cavity 11 and the downstream mounting cavity 12 are simultaneously formed in the meter body 1. The upstream mounting cavity 11 is used to install the upstream mounting seat 211. Along the direction from top to bottom, the upstream mounting cavity 11 is sequentially combined by an upper avoiding hole 111, a middle reduced-diameter holding hole 112, a lower avoiding hole 113 and a lower reduced-diameter holding hole 114. When the upstream mounting seat 211 is assembled with the meter body 1, the main body section 2112 and the reduced-diameter tail section 2113 are respectively and one-to-one correspondingly held by the middle reduced-diameter holding hole 112 and the lower reduced-diameter holding hole 114, and the large-diameter head section 2111 is in contact with the bottom of the upper avoiding hole 111 (as shown in Figure 10 、 11 ).

[0033] Benefited from the assembly clearance and the swing freedom of the upstream mounting seat 211 being controlled, in actual application, even if it is subjected to water impact force, the relative position of the upstream mounting seat 211 always remains fixed and unchanged, and the root thereof also cannot reciprocatingly swing, so that the installation position accuracy of the upstream ultrasonic transducer 212 is ensured, and it is ensured that the emission angles of the ultrasonic beams all meet the expected design, which is beneficial to the ultrasonic water meter to obtain excellent measurement accuracy.

[0034] It also needs to be explained that even if subjected to the exciting force, the fixing reliability of the mounting seat 211 can also be long-term maintained, so that the service life and the durability of the ultrasonic water meter both meet the expected design requirements.

[0035] It is known that according to the design common sense, the specific structure size of the upstream plug-in cavity 11 has a crucial influence on whether the upstream mounting seat 211 can smoothly complete plug-in and the subsequent plug-in stability and reliability. In view of this, as a further optimization of the above technical solution, as shown in Figure 4 、 5 , 6, 9, 10, 11, the inner diameter values of the upper avoidance hole 111, the middle diameter-reduced holding hole 112, the lower avoidance hole 113, and the lower diameter-reduced holding hole 114 are D1, D2, D3, and D4 respectively, and the outer diameter values of the main body section 2112 and the diameter-reduced tail section 2113 are D5 and D6 respectively, then D4 < D2, D2 < D1, D2 < D3, 0.03mm ≤ D2-D5 ≤ 0.05mm, and 0.03mm ≤ D4-D6 ≤ 0.05mm. In this way, on the one hand, it effectively ensures that the upstream mounting seat 211 can be smoothly inserted into the upstream plug-in cavity 11 without the need for on-site adaptive grinding; on the other hand, when the upstream mounting seat 211 is completely plugged in, its assembly clearance and swing freedom are controlled within a reasonable value range, which is helpful to improve the measurement accuracy of the ultrasonic water meter.

[0036] As shown in Figure 3 、 7 , it can also be clearly seen that the upstream mounting seat 211 is detachably fixed to the meter body 1 by means of the screw assembly 213. The screw assembly 213 is composed of a plurality of screws 2131. As shown in Figure 8 , the large-diameter head section 2111 is formed with a plurality of through holes 21111 for the screws 2131 to pass through. The number of the through holes 21111 is multiple, and they are circularly arrayed with the center axis of the upstream mounting seat 211 as the reference. As shown in Figure 6As shown in , the bottom of the upper avoidance hole 111 is formed with an internal threaded hole 1111 for screwing in the screw 2131. During the assembly stage of the smart water meter, first, the multiple upstream ultrasonic transducers 212 are assembled in sequence in the cavity of the upstream mounting seat 211, and then inserted into the upstream insertion cavity 11 as a whole. Finally, the screws 2131 are tightened in sequence, and the upstream ultrasonic component 21 is assembled in place. In this way, on the one hand, it ensures that the upstream ultrasonic component 21 has excellent assembly relationship reliability and stability, and avoids the occurrence of loosening due to the action of the excitation force; on the other hand, after a period of use, when the upstream ultrasonic component 21 needs to be repaired or reworked, the operator only needs to loosen the screws 2131 to easily and quickly remove the upstream ultrasonic component 21 from the meter body 1.

[0037] like Figure 7 、 10 As shown in Figures 11 and 12, the upstream ultrasonic assembly 21 is further equipped with a rubber ring 214. An annular groove 21131 is formed on the reduced diameter tail section 2113, into which the rubber ring 214 fits. After assembly, the rubber ring 214 elastically deforms due to the combined extrusion force from the reduced diameter tail section 2113 and the underlying reduced diameter holding hole 114. This fills the assembly gap between the reduced diameter tail section 2113 and the underlying reduced diameter holding hole 114, ensuring that the reciprocating deflection amplitude of the upstream mounting base 211 remains within a reasonable range when subjected to the impact force of the water flow.

[0038] Likewise Figure 7 、 10 As shown in Figures 11 and 12, the upstream ultrasonic assembly 21 is further provided with a sealing gasket 215. The main body section 2112 passes through the sealing gasket 215, and the sealing gasket 215 is elastically deformed due to the combined extrusion force from the large-diameter head section 2111 and the bottom of the upper avoidance hole 111, thereby effectively preventing water from overflowing through the assembly gap formed between the upstream mounting seat 211 and the meter body 1.

[0039] Depend on Figure 3 、 7 As shown in , 10 and 11, it can be clearly seen that by means of the cover 216 to cover the upper avoidance hole 111, the upstream mounting seat 211 can be hidden, and external dust can be effectively isolated, thereby avoiding the upstream ultrasonic transducer 212 being contaminated by external dust and affecting the measurement accuracy of the ultrasonic water meter.

[0040] Figure 12The structure schematic diagram of the second embodiment of the ultrasonic transducer mounting structure for the intelligent water meter is shown, and it can be known that the difference from the first embodiment is that the screw assembly 213 is abandoned, and the pressure ring 217 is used to limit the axial displacement freedom of the upstream mounting seat 211. Figure 13 As shown in the figure, the circumferential side wall of the pressure ring 217 is formed with external threads 2171, and the external threads 2171 extend downward from the top wall to form a screwing groove 2172. The inner side wall of the upper avoiding hole 111 is formed with internal threads matched with the external threads 2171. In this way, during the assembly of the intelligent water meter, first, the plurality of upstream ultrasonic transducers 212 are assembled in the cavities of the upstream mounting seat 211 in sequence, and then, as a whole, the upstream ultrasonic transducer assembly 21 is inserted into the upstream insertion cavity 11, and then, the pressure ring 217 is aligned with the upper avoiding hole 111, and the screwing groove 2172 is used to apply a rotating torque to the pressure ring 217, so that the pressure ring 217 is close to and tightly presses the upstream mounting seat 211 under the action of the thread force, and the upstream ultrasonic transducer assembly 21 is assembled in place.

[0041] Finally, it should be noted that, in order to avoid the top wall of the upstream mounting seat 211 being damaged due to the action of the rigid extrusion force, as a further optimization of the above technical solution, the pressure ring 217 is preferably made of pure copper or alloy copper material with soft material.

[0042] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultrasonic transducer mounting structure for a smart water meter, comprising a meter body and a water flow measurement module; the water flow measurement module measures the flow of water based on the Doppler effect, comprising an upstream ultrasonic assembly and a downstream ultrasonic assembly; the upstream ultrasonic assembly and the downstream ultrasonic assembly are both assembled with the meter body, and both occupy the upstream and downstream of the water flow, respectively, characterized in that, The upstream ultrasonic assembly and the downstream ultrasonic assembly have the same configuration; the upstream ultrasonic assembly comprises an upstream mounting seat and a plurality of upstream ultrasonic transducers; the upstream mounting seat is embedded to be integrated with the surface body, and has a plurality of mounting holes for the upstream ultrasonic transducers along the linear array of the circumferential side wall; when the upstream mounting seat is embedded, the neck and the root are held by the surface body.

2. The ultrasonic transducer mounting structure for a smart water meter according to claim 1, characterized by, Along the direction from top to bottom, the upstream mounting seat is sequentially connected by a large-diameter head section, a main body section and a reduced-diameter tail section; an upstream insertion cavity for the upstream mounting seat is formed in the surface body; along the direction from top to bottom, the upstream insertion cavity is combined by an upper avoiding hole, a middle reduced-diameter holding hole, a lower avoiding hole and a lower reduced-diameter holding hole; the inner diameters of the upper avoiding hole, the middle reduced-diameter holding hole, the lower avoiding hole and the lower reduced-diameter holding hole are D1, D2, D3 and D4 respectively, and the outer diameters of the main body section and the reduced-diameter tail section are D5 and D6 respectively, so that D4 < D2, D2 < D1, D2 < D3, 0.03mm ≤ D2-D5 ≤ 0.05mm, and 0.03mm ≤ D4-D6 ≤ 0.05mm; when the upstream mounting seat is assembled relative to the surface body, the main body section and the reduced-diameter tail section are held by the middle reduced-diameter holding hole and the lower reduced-diameter holding hole respectively, and the large-diameter head section is in contact with the bottom of the upper avoiding hole.

3. The ultrasonic transducer mounting structure for a smart water meter according to claim 2, characterized by, The upstream ultrasonic assembly further comprises a screw assembly; the upstream mounting seat is detachably fixed to the surface body by the screw assembly; the screw assembly is combined by a plurality of screws; a through hole is formed on the large-diameter head section for the screws to pass through; the number of the through holes is multiple, and they are circularly arrayed based on the central axis of the upstream mounting seat; the bottom of the upper avoiding hole is formed with an internal thread hole for the screws to screw into.

4. The ultrasonic transducer mounting structure for a smart water meter according to claim 2, characterized by, The upstream ultrasonic assembly further comprises a cover; the cover is used to cover the upper avoiding hole, so that the upstream mounting seat is hidden.

5. The ultrasonic transducer mounting structure for a smart water meter according to any one of claims 2 to 4, characterized by, The upstream ultrasonic assembly further comprises a rubber ring; the rubber ring is sleeved on the reduced-diameter tail section, and it is elastically deformed due to the common extrusion force from the reduced-diameter tail section and the lower reduced-diameter holding hole.

6. The ultrasonic transducer mounting structure for a smart water meter according to claim 5, wherein The upstream ultrasonic assembly further comprises a sealing gasket; the sealing gasket is passed through by the main body section, and it is elastically deformed due to the common extrusion force from the large-diameter head section and the bottom of the upper avoiding hole.

Images