A multifunctional ultrasonic water meter

Abstract

The present invention relates to the technical field of ultrasonic water meters, and specifically provides a multifunctional ultrasonic water meter, which includes a housing. An ultrasonic generator and an ultrasonic receiver are arranged on the housing, and inner and outer protective covers are rotatably arranged on the outer peripheries of the two. The inner and outer protective covers can effectively protect the ultrasonic generator and the ultrasonic receiver, avoiding the situation that the accuracy is reduced due to the impact of the water flow on the two. At the same time, a driving component is arranged to control the rotation of the ultrasonic generator and the ultrasonic receiver, so that the working surfaces are in different positions when the ultrasonic generator and the ultrasonic receiver are in different working states, thereby improving the service life of the ultrasonic generator and the ultrasonic receiver. And a cleaning roller is arranged on the housing, and the cleaning roller can clean the impurities in the liquid and reduce the influence of the impurities on the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic water meters, and particularly to a multifunctional ultrasonic water meter. Background Art

[0002] An ultrasonic water meter is a high-precision instrument that uses ultrasonic waves to measure the flow velocity and volume of water. Specifically, it analyzes the time difference generated when the ultrasonic beam propagates downstream and upstream in water due to the change in velocity, and further calculates the water flow rate by analyzing and processing the obtained water flow velocity.

[0003] For example, Chinese Patent CN109870204A discloses a single-hole insertion type ultrasonic water meter. This solution uses an ultrasonic sensor with two relatively arranged probes to alternately transmit and receive ultrasonic signals, which can measure the fluid flow rate with high measurement accuracy. In addition, by providing a diversion groove in the middle of the stainless steel housing, the fluid can pass through the sensor sensing area, enabling the sensor to obtain flow data and thus complete the flow detection.

[0004] However, the two ultrasonic sensors in the above solution are exposed to the pipeline fluid, so this part will be impacted by the fluid, causing the sensor to be subjected to certain mechanical stress. Long-term stress will lead to a decrease in the detection accuracy of the sensor. Moreover, when there are certain impurities in the fluid, suspended solids, minerals, algae, and other impurities in the water may deposit on the surface of the sensor, affecting the propagation of ultrasonic waves. Summary of the Invention

[0005] Based on this, in view of the problem that the ultrasonic sensor in the current water meter is exposed to the liquid for a long time, resulting in a decrease in the accuracy of the sensor, it is necessary to provide a multifunctional ultrasonic water meter.

[0006] The above object is achieved by the following technical solutions:

[0007] A multifunctional ultrasonic water meter, comprising:

[0008] A housing that can be connected to a pipeline. A sensor group is provided on the housing, and the sensor group includes an ultrasonic generator and an ultrasonic receiver. Part of the ultrasonic generator and the ultrasonic receiver is located inside the housing, and both parts located inside the housing have a working surface and a non-working surface;

[0009] A shield assembly, which includes an outer protective cover and an inner protective cover. The inner protective cover is rotatably arranged around the ultrasonic generator and the ultrasonic receiver. The inner protective cover is made of a hard material, and the outer protective cover is fixed on the outer periphery of the inner protective cover. The surface of the outer protective cover is rough and made of a flexible material;

[0010] A driving component, which is used to drive the ultrasonic generator and the ultrasonic receiver to rotate, and the driving component is configured as follows:

[0011] When the liquid in the pipeline flows, the driving component drives the working surfaces of the ultrasonic generator and the ultrasonic receiver to face the axis direction of the pipeline;

[0012] When the liquid inside stops flowing, the driving component drives the non-working surfaces of the ultrasonic generator and the ultrasonic receiver to face the axis direction of the pipeline.

[0013] Furthermore, the driving component includes a driving motor and a first transmission belt. The driving motor is fixedly arranged outside the housing. The first transmission belt is wound around the rotating shafts of the ultrasonic generator, the ultrasonic receiver and the driving motor. The driving motor drives the first transmission belt to rotate, and the first transmission belt pulls the ultrasonic generator and the ultrasonic receiver to rotate.

[0014] Furthermore, a power generation component is also arranged outside the housing, and the power generation component can supply electric energy to the driving motor.

[0015] Furthermore, the power generation component includes a generator and a storage battery. Both the generator and the storage battery are fixedly connected to the housing. The generator is electrically connected to the storage battery. A second transmission belt is wound around the rotating shaft of the generator. The second transmission belt is sleeved on the outer protective cover. The liquid flow in the pipeline drives the outer protective cover to rotate to drive the second transmission belt to rotate, and the second transmission belt pulls the generator to rotate.

[0016] Furthermore, there are two ultrasonic generators, which are symmetrically arranged. When one of the two ultrasonic generators works, the other is in a non-working state.

[0017] Furthermore, there are two ultrasonic generator-receivers, which are symmetrically arranged. When one of the two ultrasonic receivers works, the other is in a non-working state.

[0018] Furthermore, a cleaning roller is arranged on the housing, and the cleaning roller abuts against the outer protective cover, and the cleaning roller can scrape the surface of the outer protective cover.

[0019] Furthermore, a connecting component is arranged on the housing, and the connecting component is used for sealing and connecting the pipeline.

[0020] Furthermore, the connecting component includes two connecting flanges. One end of each of the two connecting flanges is fixedly arranged on the housing, and the other ends of the two connecting flanges are detachably arranged on the pipeline.

[0021] Furthermore, a display screen is provided on the housing. The display screen is electrically connected to the ultrasonic generator and the ultrasonic receiver, and the display screen can display the liquid data in the pipeline.

[0022] The beneficial effects of the present invention are as follows:

[0023] By providing a rotating inner protective cover and an outer protective cover, the present invention can effectively protect the ultrasonic generator and the ultrasonic receiver, avoiding the situation where the accuracy is reduced due to the impact of water flow on the two. At the same time, a driving component is provided to control the rotation of the ultrasonic generator and the ultrasonic receiver, so that when the ultrasonic generator and the ultrasonic receiver are in different working states, the working surfaces are in different positions, thereby improving the service life of the ultrasonic generator and the ultrasonic receiver.

[0024] By providing a cleaning roller on the housing, the cleaning roller is in contact with the surface of the outer protective cover. The cleaning roller can adsorb impurities in the pipeline, and the cleaning roller can scrape and clean the impurities attached to the outer protective cover, reducing the impurities in the liquid and avoiding affecting the propagation of sound waves.

[0025] By providing two ultrasonic generators and two ultrasonic receivers, when one of them fails, the other non-failed ultrasonic generator or ultrasonic receiver can be replaced in time, improving the replacement efficiency.

[0026] By providing a power generation component, the kinetic energy of the liquid flow is converted into electrical energy for storage, and the stored electrical energy is used for the driving motor, avoiding energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of a multifunctional ultrasonic water meter provided by an embodiment of the present invention;

[0028] Figure 2 is Figure 1 the internal structural schematic diagram of the multifunctional ultrasonic water meter provided by an embodiment of

[0029] Figure 3 is Figure 1 another perspective schematic diagram of the internal structure of the multifunctional ultrasonic water meter provided by an embodiment of

[0030] Figure 4 is Figure 2 the right view of the multifunctional ultrasonic water meter provided by an embodiment of

[0031] Figure 5 is Figure 4 the sectional view of the multifunctional ultrasonic water meter provided by an embodiment of along A-A;

[0032] Figure 6 As Figure 4 a cross-sectional view of the multifunctional ultrasonic water meter provided by one embodiment along B-B;

[0033] Figure 7 As Figure 6 a partially enlarged view of part X of the multifunctional ultrasonic water meter provided by one embodiment;

[0034] Figure 8 As Figure 2 the front view of the multifunctional ultrasonic water meter provided by one embodiment;

[0035] Figure 9 As Figure 8 a cross-sectional view of the multifunctional ultrasonic water meter provided by one embodiment along C-C;

[0036] Figure 10 As Figure 9 a partially enlarged view of part Y of the multifunctional ultrasonic water meter provided by one embodiment.

[0037] Wherein:

[0038] 100, housing; 110, protective shell; 120, installation groove; 130, connecting flange; 140, cleaning roller; 150, display screen;

[0039] 200, ultrasonic generator; 210, ultrasonic receiver; 220, transmission ring; 221, partition; 230, inner protective cover; 240, outer protective cover; 241, connecting shaft; 242, transmission wheel;

[0040] 300, drive motor; 310, first transmission belt; 320, generator; 330, second transmission belt; 340, storage battery. Detailed implementation manners

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" as used in this invention, unless otherwise specifically stated, both include direct and indirect connection (coupling). In the description of this invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this invention.

[0043] In this invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0044] The following refers to Figures 1 - 10 to describe a multifunctional ultrasonic water meter provided by this invention.

[0045] A multifunctional ultrasonic water meter, suitable for detecting the flow rate in a pipeline, includes a housing 100. The housing 100 can be connected to the pipeline, and the liquid in the pipeline flows through the housing 100. A sensor group is provided on the housing 100, and the sensor group is used to detect the flow rate of the liquid. The sensor group includes an ultrasonic generator 200 and an ultrasonic receiver 210. The ultrasonic generator 200 is used to emit sound waves, and the sound waves are received by the ultrasonic receiver 210 after passing through the liquid in the pipeline. Various data of the liquid are calculated through the time of sound wave propagation. To facilitate the connection of the ultrasonic generator 200 and the ultrasonic receiver 210 to the housing 100, an installation groove 120 that can cooperate with the ultrasonic generator 200 and the ultrasonic receiver 210 is provided on the housing 100. The side wall of the installation groove 120 communicates with the inside of the pipeline. The ultrasonic generator 200 and the ultrasonic receiver 210 are rotatably connected in the installation groove 120. Both the ultrasonic generator 200 and the ultrasonic receiver 210 have a working surface (the working surface refers to the surface of the ultrasonic generator 200 and the ultrasonic receiver 210 that can emit or receive sound waves) and a non - working surface (the non - working surface refers to the surface of the ultrasonic generator 200 and the ultrasonic receiver 210 that cannot emit or receive sound waves).

[0046] A shield assembly is provided on the housing 100. The shield assembly is used to protect the ultrasonic generator 200 and the ultrasonic receiver 210. The shield assembly includes an inner shield 230 and an outer shield 240. The inner shield 230 is rotatably connected to the outer periphery of the ultrasonic generator 200 and the ultrasonic receiver 210, and the inner shield 230 is made of a hard material (the hard material can be hard plastic), so as to prevent the water flow in the pipeline from impacting the ultrasonic generator 200 and the ultrasonic receiver 210. The outer shield 240 is fixed on the inner shield 230. The outer peripheral surface of the outer shield 240 is rough and made of a flexible material (the flexible material can be rubber or absorbent cotton). When the liquid in the pipeline impacts on the outer shield 240, the impact force can be relieved by the flexible material, reducing the impact force on the inner shield 230. At the same time, the rough surface can make the liquid drive the outer shield 240 to rotate, and when the outer shield 240 rotates, the impact force of the liquid on the inner shield 230 is further reduced. At the same time, since the inner shield 230 is made of a hard material, it can support the outer shield 240 and prevent the outer shield 240 from deforming excessively.

[0047] A driving assembly is provided on the housing 100. The driving assembly can drive the ultrasonic generator 200 and the ultrasonic receiver 210 to rotate. The driving assembly is configured as follows:

[0048] When the liquid in the pipeline flows, the driving assembly rotates the working surfaces of the ultrasonic generator 200 and the ultrasonic receiver 210 towards the direction of the pipeline axis, that is, the working surfaces face the flowing liquid, so that the ultrasonic generator 200 and the ultrasonic receiver 210 can work normally;

[0049] When the liquid in the pipeline stops flowing, that is, when the ultrasonic generator 200 and the ultrasonic receiver 210 do not need to work, the driving assembly drives the non-working surfaces of the ultrasonic generator 200 and the ultrasonic receiver 210 to rotate towards the direction of the pipeline axis. At this time, the working surfaces are away from the liquid, so as to effectively protect the working surfaces and avoid the working surfaces being affected by other factors, and further improve the service life of the ultrasonic generator 200 and the ultrasonic receiver 210.

[0050] It should be noted that a protective shell 110 is provided on the outer side of the housing 100. The protective shell 110 covers the driving assembly and the sensor group, thus playing a protective role.

[0051] By setting the rotating inner protective cover 230 and outer protective cover 240, the ultrasonic generator 200 and ultrasonic receiver 210 can be effectively protected, avoiding the situation where the accuracy is reduced due to the impact of water flow on the two. At the same time, a driving component is set to control the rotation of the ultrasonic generator 200 and ultrasonic receiver 210, so that when the ultrasonic generator 200 and ultrasonic receiver 210 are in different working states, the working surfaces are in different positions, thereby increasing the service life of the ultrasonic generator 200 and ultrasonic receiver 210.

[0052] Specifically, the driving component in the present invention includes a driving motor 300 and a first transmission belt 310. The driving motor 300 is fixedly arranged on the housing 100, and the first transmission belt 310 is sleeved on the rotating shafts of the ultrasonic generator 200, ultrasonic receiver 210, and driving motor 300. To facilitate the connection of the first transmission belt 310 to the ultrasonic generator 200 and ultrasonic receiver 210, a transmission ring 220 is connected to the outer periphery of the end of the ultrasonic generator 200 and ultrasonic receiver 210 that extends out of the installation groove 120, and the first transmission belt 310 is wound around the transmission ring 220. When the driving motor 300 drives the first transmission belt 310 to rotate, the first transmission belt 310 drives the ultrasonic generator 200 and ultrasonic receiver 210 to rotate, thereby changing the positions of the working surfaces and non-working surfaces on the ultrasonic generator 200 and ultrasonic receiver 210.

[0053] It should be noted that the driving component is not limited to the above structure. The first transmission belt 310 can also be replaced with a gear, and a toothed ring is fixedly arranged on the outer periphery of the transmission ring 220. The function of driving the ultrasonic generator 200 and ultrasonic receiver 210 to rotate can also be achieved through the meshing of the gear and the toothed ring. Of course, it can also be other structures, which are not specifically limited here.

[0054] In a further embodiment, a power generation component is also arranged on the housing 100. The power generation component can generate electricity for the driving motor 300 of the above driving component, thereby reducing energy consumption and achieving self-sufficiency.

[0055] Specifically, the power generation assembly includes a generator 320 and a storage battery 340. Both the storage battery 340 and the generator 320 are fixedly arranged outside the housing 100. The electric energy generated by the generator 320 is transmitted and stored in the storage battery 340. The generator 320 and the storage battery 340 are connected by a wire. It also includes a rectifier, a charge controller, etc. For example, the charge controller can prevent the overcharging of the storage battery 340. When the storage battery 340 reaches the set charging upper limit, the charge controller will automatically cut off the charging current. A second transmission belt 330 is wound around the rotating shaft of the generator 320. The second transmission belt 330 is also wound around the outer protective cover 240, specifically around the connecting shaft 241 at the lower end of the outer protective cover 240. The connecting shaft 241 is rotatably and sealedly arranged at the bottom of the housing 100, and one end of the connecting shaft 241 extends out of the housing 100. A transmission wheel 242 is coaxially and fixedly connected to the extended end. The second transmission belt 330 is wound around the transmission wheel 242. When the liquid flow in the pipeline drives the outer protective cover 240 to rotate, the outer protective cover 240 drives the transmission wheel 242 to rotate. The transmission wheel 242 drives the second transmission belt 330, so that the second transmission belt 330 pulls the rotating shaft of the generator 320 to rotate. The electric energy generated by the generator 320 is stored in the storage battery 340, and the electric energy stored in the storage battery 340 is used to supply the driving motor 300.

[0056] By setting the generator 320 to convert the kinetic energy of the liquid flow into electric energy, using the storage battery 340 to store the electric energy, and then supplying power to the driving motor 300 through the storage battery 340, the energy utilization rate can be greatly improved, and the demand for external energy can be reduced.

[0057] In a further embodiment, there are two ultrasonic generators 200, and the two ultrasonic generators 200 are symmetrically arranged in the installation groove 120. When one of the two ultrasonic generators 200 is working, the other is in a non-working state. That is to say, when the working surface of one ultrasonic generator 200 faces the axis of the pipeline, the working surface of the other ultrasonic generator 200 is away from the axis of the pipeline. It can be set that the two ultrasonic generators 200 are used alternately, or only one of them is used all the time. When one of the ultrasonic generators 200 fails, the driving motor 300 rotates the two ultrasonic generators 200 so that the working surface of the other ultrasonic generator 200 faces the axis of the pipeline. At this time, the faulty ultrasonic generator 200 can be replaced with a new one. If there is only one ultrasonic generator 200, when the ultrasonic generator 200 needs to be replaced due to a failure, it will cause the inability to detect the liquid flow in the pipeline during the replacement of the new ultrasonic generator 200. By arranging two ultrasonic generators 200 in one installation groove 120, the above situation can be avoided.

[0058] It should be noted that the two ultrasonic generators 200 of the present invention can axially move in the installation groove 120, and are convenient to take out and install. At the same time, the transmission ring 220 is sleeved on the two ultrasonic generators 200. The transmission ring 220 can only axially move relative to the ultrasonic generator 200 and cannot rotate circumferentially. A partition 221 is provided in the installation groove 120. The partition 221 separates the two ultrasonic transmitters. The partition 221 is fixedly connected to the inner circumference of the transmission ring 220. When the drive motor 300 drives the transmission ring 220 to rotate, the partition 221 is driven to rotate, and the two ultrasonic generators 200 on both sides of the partition 221 rotate synchronously. When one of them fails, it can be replaced at any time, which is convenient and fast.

[0059] Similarly, there are also two ultrasonic receivers 210 of the present invention. The two ultrasonic receivers 210 are symmetrically arranged in the installation groove 120 and are also separated by the partition 221. The transmission ring 220 is simultaneously driven by the drive motor 300. The two ultrasonic receivers 210 and the two ultrasonic generators 200 rotate simultaneously, so as to realize the sound wave transmission and reception between the ultrasonic receiver 210 and the ultrasonic generator 200. When one of the ultrasonic receivers 210 fails, the drive motor 300 drives the transmission ring 220 to rotate, and the transmission ring 220 drives the two ultrasonic receivers 210 to exchange positions. At the same time, the two ultrasonic generators 200 also exchange positions to switch the other ultrasonic generator 200 to dock with the non-faulty ultrasonic receiver 210.

[0060] In a further embodiment, there are two groups of sensor groups of the present invention. The ultrasonic generators 200 and ultrasonic receivers 210 in each group of sensor groups are arranged alternately, that is, the connection lines of the ultrasonic generators 200 and ultrasonic receivers 210 in one group are cross-crossed with the connection lines of the ultrasonic generators 200 and ultrasonic receivers 210 in the other group. By setting two groups of sensor groups, the accuracy of detecting the liquid flow in the pipeline can be improved, and after one of the groups fails, the other group can still play a detection role.

[0061] In a further embodiment, a cleaning roller 140 is also provided on the housing 100. The cleaning roller 140 can clean the surface of the outer protective cover 240. Specifically, the cleaning roller 140 is arranged on the side wall of the installation groove 120, and the outer circumference of the cleaning roller 140 abuts against the surface of the outer protective cover 240. Since the outer protective cover 240 is made of a flexible material and the surface is rough, it can adsorb impurities in the pipeline liquid. Through the rotation of the outer protective cover 240, the impurities on the surface of the outer protective cover 240 are scraped off by the cleaning roller 140, preventing too many impurities from being adsorbed on the outer protective cover 240 and affecting the sound wave propagation.

[0062] It should be noted that a new cleaning roller 140 can be replaced regularly to maintain a good cleaning effect.

[0063] Specifically, a connection component is further provided on the housing 100 in the embodiments of the present invention. The connection component is used to connect the housing 100 to a pipeline, so as to detect the liquid flow rate in the pipeline.

[0064] The connection component includes two connection flanges 130. One ends of the two connection flanges 130 are respectively fixed on both sides of the housing 100. A plurality of connection holes are provided at the other ends of the two connection flanges 130. Bolts can be installed in the connection holes. Through the bolts, the connection flanges 130 on the housing 100 and the connection flanges 130 on the pipeline can be detachably connected. And a gasket needs to be provided between the connection flanges 130 on the housing 100 and the connection flanges 130 on the pipeline to prevent liquid leakage.

[0065] More specifically, a display screen 150 is provided on the housing 100. The display screen 150 is electrically connected to the ultrasonic generator 200 and the ultrasonic receiver 210. The display screen 150 is used to display the liquid data inside the pipeline detected by the ultrasonic generator 200 and the ultrasonic receiver 210.

[0066] The specific working process of a multifunctional ultrasonic water meter provided by the present invention will be described in combination with the above embodiments:

[0067] Installation:

[0068] The connection flanges 130 on both sides of the housing 100 are connected to the pipeline, and a gasket is installed at the connection to prevent leakage. Then turn on the display screen 150.

[0069] Operation:

[0070] The storage battery 340 supplies power to the drive motor 300. The drive motor 300 drives the first transmission belt 310 to rotate. The first transmission belt 310 drives the two ultrasonic generators 200 and the two ultrasonic receivers 210 to rotate synchronously. When the working surfaces of the two ultrasonic generators 200 and the two ultrasonic receivers 210 are in one-to-one correspondence, the rotation stops. When the ultrasonic generators 200 and the ultrasonic receivers 210 work, they emit and receive acoustic signals. The acoustic signals propagate in the pipeline liquid. Since the ultrasonic signal is superimposed on the water flow signal, the propagation speeds of the acoustic waves in the downstream and upstream directions are different. Therefore, the running times of the acoustic signals of different ultrasonic generators 200 in water are different. By measuring the difference in this time, the flow velocity of the fluid can be calculated, and then converted into flow rate, so as to achieve the measurement of the flow rate.

[0071] Since the outer peripheries of two ultrasonic generators 200 and two ultrasonic receivers 210 are rotatably connected with an inner protective cover 230 made of a rigid material and an outer protective cover 240 made of a flexible material, the liquid flowing in the pipeline can drive the outer protective cover 240 to rotate. The connecting shaft 241 at the lower end of the outer protective cover 240 drives the second transmission belt 330 to rotate, and the second transmission belt 330 pulls the rotating shaft of the generator 320 to rotate. The electric energy generated by the generator 320 is stored in the storage battery 340, and the storage battery 340 supplies power to the drive motor 300 again, realizing the recycling of energy and reducing energy waste.

[0072] Non - working:

[0073] When the liquid in the pipeline stops flowing, the detection needs to be stopped. At this time, the drive motor 300 drives the first transmission belt 310 to rotate, and the first transmission belt 310 drives two ultrasonic generators 200 and two ultrasonic receivers 210 to rotate, so that the non - working surfaces of the two ultrasonic generators 200 and the two ultrasonic receivers 210 face the axis direction of the pipeline, thereby effectively protecting the working surfaces of the two ultrasonic generators 200 and the two ultrasonic receivers 210 and avoiding the influence of other factors on the working surfaces, and then improving the service life of the ultrasonic generators 200 and the ultrasonic receivers 210.

[0074] Cleaning:

[0075] Since the outer protective cover 240 is driven by the liquid to rotate and the surface of the outer protective cover 240 is rough, it can adsorb impurities in the liquid. At the same time, a cleaning roller 140 is arranged on the side wall of the installation groove 120, and the outer periphery of the cleaning roller 140 abuts against the outer periphery of the outer protective cover 240. Therefore, when the outer protective cover 240 rotates, it can be scraped by the cleaning roller 140. The cleaning roller 140 collects the impurities to prevent excessive impurities from adhering to the surface of the outer protective cover 240 and affecting the detection accuracy. Regularly replace the new cleaning roller 140 to maintain a good cleaning effect.

[0076] Failure:

[0077] If one of the two ultrasonic generators 200 or one of the two ultrasonic receivers 210 fails, the drive motor 300 drives the first transmission belt 310 to rotate, and the first transmission belt 310 pulls the transmission ring 220 to rotate. The transmission ring 220 drives the two ultrasonic generators 200 and the two ultrasonic receivers 210 to rotate, so that the working surface of the faulty ultrasonic generator 200 or ultrasonic receiver 210 is far away from the pipeline axis, while the working surfaces of the non - faulty ultrasonic generators 200 and ultrasonic receivers 210 face the pipeline axis direction to continue the detection. At this time, the faulty ultrasonic generator 200 or ultrasonic receiver 210 can be replaced with a new one for standby.

[0078] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0079] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A multifunctional ultrasonic water meter, characterized in that, Comprising: A housing which can be connected to a pipeline. A sensor group is provided on the housing. The sensor group includes an ultrasonic generator and an ultrasonic receiver. The ultrasonic generator and the ultrasonic receiver are partially located inside the housing, and both the parts located inside the housing have a working surface and a non-working surface; A shield assembly which includes an outer protective cover and an inner protective cover. The inner protective cover is rotatably arranged around the outer circumference of the ultrasonic generator and the ultrasonic receiver. The inner protective cover is made of a hard material. The outer protective cover is fixed on the outer circumference of the inner protective cover. The surface of the outer protective cover is rough and made of a flexible material; A driving assembly which is used to drive the ultrasonic generator and the ultrasonic receiver to rotate. The driving assembly is configured as: When the liquid in the pipeline flows, the driving assembly drives the working surfaces of the ultrasonic generator and the ultrasonic receiver to face the pipeline axis direction; When the liquid inside stops flowing, the driving assembly drives the non-working surfaces of the ultrasonic generator and the ultrasonic receiver to face the pipeline axis direction; The driving assembly includes a driving motor and a first transmission belt. The driving motor is fixedly arranged outside the housing. The first transmission belt is wound around the rotating shafts of the ultrasonic generator, the ultrasonic receiver and the driving motor. The driving motor drives the first transmission belt to rotate, and the first transmission belt pulls the ultrasonic generator and the ultrasonic receiver to rotate; A power generation assembly is also provided outside the housing. The power generation assembly can supply electric energy to the driving motor; The power generation assembly includes a generator and a storage battery. Both the generator and the storage battery are fixedly connected to the housing. The generator is electrically connected to the storage battery. A second transmission belt is wound around the rotating shaft of the generator. The second transmission belt is sleeved on the outer protective cover. The liquid flow in the pipeline drives the outer protective cover to rotate to drive the second transmission belt to rotate, and the second transmission belt pulls the generator to rotate.

2. The multifunctional ultrasonic water meter according to claim 1, wherein There are two ultrasonic generators which are symmetrically arranged. When one of the two ultrasonic generators is working, the other is in a non-working state.

3. The multifunctional ultrasonic water meter according to claim 1, wherein, There are two ultrasonic transceivers which are symmetrically arranged. When one of the two ultrasonic transceivers is working, the other is in a non-working state.

4. The multifunctional ultrasonic water meter according to claim 1, characterized in that, A cleaning roller is provided on the housing. The cleaning roller abuts against the outer protective cover, and the cleaning roller can scrape the surface of the outer protective cover.

5. The multifunctional ultrasonic water meter according to claim 1, characterized in that, A connection assembly is provided on the housing. The connection assembly is used to seal and connect the pipeline.

6. The multifunctional ultrasonic water meter according to claim 5, characterized in that, The connection assembly includes two connection flanges. One end of each of the two connection flanges is fixedly arranged on the housing, and the other ends of the two connection flanges are detachably arranged on the pipeline.

7. The multifunctional ultrasonic water meter according to claim 1, characterized in that, A display screen is also provided on the housing. The display screen is electrically connected to the ultrasonic generator and the ultrasonic receiver, and the display screen can display the liquid data in the pipeline.

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