CN103035070B - Small-diameter ultrasonic intelligent water meter - Google Patents

Abstract

The invention belongs to the technical field of water meters, and discloses a small-diameter ultrasonic intelligent water meter, which includes a base meter body, which is provided with a water inlet and a water outlet, and is provided with a first spherical expansion cavity and a second spherical expansion chamber on the base meter body cavity, the top of the first spherical expansion cavity and the second spherical expansion cavity are respectively provided with a first ultrasonic transducer, and the bottom is respectively provided with a first ultrasonic reflection column and a second ultrasonic reflection column, and the first ultrasonic transducer is provided with There is a first integrator, and the tops of the first ultrasonic reflection column and the second ultrasonic reflection column are respectively provided with a first reflection surface and a second reflection surface, and the first reflection surface and the second reflection surface face each other. It successfully applies ultrasonic technology to small-diameter water meters, and can detect whether the water meter itself is faulty.

Description

Small Caliber Ultrasonic Smart Water Meter

technical field

The invention belongs to the technical field of water meters and relates to an intelligent water meter, in particular to a small-diameter ultrasonic intelligent water meter. the

Background technique

At present, most water meters are mechanical water meters, and only a few large-diameter water meters use ultrasonic methods. Among them, the mechanical water meter technology is relatively mature, the cost is low, and the performance is also very reliable. The small-diameter water meter basically adopts this scheme. The working principle of the mechanical water meter is to measure the volume of the flowing water through the water flow to push the impeller to rotate. This scheme has a simple structure and is easy to assemble. However, in practical applications, the user's water meter is generally installed on a parallel pipeline. During use, water hammer will occur in the pipeline due to other users or pressurized equipment. The mechanical water meter is affected by the water hammer phenomenon. When the faucet is closed, the impeller will still be driven to rotate, causing the flow counter to jump, which will cause a certain measurement error. The water meter based on ultrasonic technology can solve the impact of the water hammer problem, and has been well applied in large-diameter water meters. However, in the field of small-caliber water meters, due to the small diameter of the base meter body and the large size of the ultrasonic transducer, the application is limited to a certain extent; Generally larger, these reasons limit the application of ultrasonic technology in the field of small-caliber water meters. Moreover, none of the existing water meters can effectively detect the faults of the water meter itself, whether there is water leakage and whether the flow calculation of the water meter is accurate, so that effective measures cannot be taken when the water meter initially leaks or the measurement is inaccurate. The occurrence of large water leakage accidents or large measurement deviations lead to undue losses for plumbing users or supply units.

Contents of the invention

In the prior art, the application of ultrasonic technology to small-diameter water meters will be subject to certain restrictions, and the data error of ultrasonic small-diameter water meters generally has relatively large defects when measuring extremely small flow rates. The present invention provides a small-diameter ultrasonic smart water meter , the smart water meter not only overcomes the above-mentioned technical defects, but also can detect whether the water meter itself fails. the

The present invention is achieved through the following technical solutions:

A small-diameter ultrasonic intelligent water meter, comprising a base meter body, the base meter body is provided with a water inlet and a water outlet, wherein: the base meter body is provided with a first spherical expansion chamber and a second spherical expansion chamber, the first spherical expansion chamber and the top of the second spherical expansion cavity are respectively provided with a first ultrasonic transducer, and the bottom is respectively provided with a first ultrasonic reflection column and a second ultrasonic reflection column, and the first ultrasonic transducer is provided with a first integrator, so The tops of the first ultrasonic reflection column and the second ultrasonic reflection column are respectively provided with a first reflection surface and a second reflection surface, and the first reflection surface and the second reflection surface face each other; A third spherical expansion cavity and a fourth spherical expansion cavity are provided, the top of the third spherical expansion cavity and the fourth spherical expansion cavity are respectively provided with a second ultrasonic transducer, and the bottom is respectively provided with a third ultrasonic reflection column and The fourth ultrasonic reflection column, the second ultrasonic transducer is provided with a second integrator, the top of the third ultrasonic reflection column and the fourth ultrasonic reflection column are respectively provided with a third reflection surface and a fourth reflection surface , the third reflective surface and the fourth reflective surface face each other; the first integrator and the second integrator respectively output the first flow value and the first flow value to the comparator through the first communication port and the second communication port The second flow value, the comparator compares the first flow value and the second flow value respectively from the first integrator and the second integrator to determine whether the water meter itself has Fault.

The comparator outputs a fault alarm signal when the first flow information and the second flow information are not equal. the

The fault alarm signal is used to drive an audible alarm and/or a set of LEDs. the

The diameters of the first spherical expansion cavity, the second spherical expansion cavity, the third spherical expansion cavity and the fourth spherical expansion cavity are 1.6 times the diameter of the base surface body. the

Compared with prior art, the beneficial effect of the present invention is:

A spherical expansion cavity is set at the position of the ultrasonic reflection column to reduce the influence of turbulent flow near the ultrasonic reflection column, reduce the generation of eddy currents, and improve the stability and accuracy of measurement, and the diameter of the spherical expansion cavity is the diameter of the base meter body When 1.6 times, the stability and accuracy of the measurement are the highest;

By setting the comparator to compare the flow values from different parts of the water meter, so as to judge whether the water meter has water leakage or inaccurate measurement;

Realize the on-off control action of water under metering and charging conditions by controlling the valve; realize the flow detection, communication and billing control functions through the flow sensor interface, communication interface, IC card interface and motor control interface on the integrator;

The present invention adopts the method of setting the ultrasonic reflection column in the spherical expansion cavity, which reduces the cost, has better stability, reliable performance and cancels the bracket, so that the fluid can pass through the base meter body smoothly, thereby reducing the pressure loss of the base meter body; The heating pipe can effectively reduce the system load; and setting a comparator can quickly determine whether the water meter has water leakage or inaccurate measurement, avoiding the loss caused by the failure to find the water meter failure in time. the

Description of drawings

Fig. 1 is a structural representation of the present invention;

In Fig. 1, 1. Water inlet; 2. Base meter body; 3. Water outlet; 4. The first spherical expansion chamber; 5. The first reflecting surface; 6. The first ultrasonic reflection column; 7. The second spherical expansion Cavity; 8. The second reflective surface; 9. The second ultrasonic reflection column; 10. Comparator; 11. The first ultrasonic transducer; 12. The first integrator; 13. The first communication port; 4', the third Spherical expansion cavity; 5', the fourth reflecting surface; 6', the third ultrasonic reflection column; 7', the fourth spherical expansion cavity; 8', the fourth reflecting surface; 9', the fourth ultrasonic reflection column; 11', A second ultrasonic transducer; 12', a second integrator; 13', a second communication port; the

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing:

A small-diameter ultrasonic smart water meter, comprising a base meter body (2), the base meter body (2) is provided with a water inlet (1) and a water outlet (3), and the base meter body (2) is provided with a first spherical expansion cavity (4) and the second spherical expansion cavity (7), the top of the first spherical expansion cavity (4) and the second spherical expansion cavity (7) are respectively equipped with a first ultrasonic transducer (11), and the bottom is respectively equipped with a second An ultrasonic reflection column (6) and a second ultrasonic reflection column (9), the first ultrasonic transducer (11) is provided with a first integrator (12), the first ultrasonic reflection column (6) and The top of the second ultrasonic reflection column (9) is respectively provided with a first reflection surface (5) and a second reflection surface (8), and the first reflection surface (5) and the second reflection surface (8) face each other ;

The base body (2) is also provided with a third spherical expansion chamber (4') and a fourth spherical expansion chamber (7'), the third spherical expansion chamber (4') and the fourth spherical expansion chamber ( 7') The top is provided with the second ultrasonic transducer (11'), the bottom is provided with the third ultrasonic reflection column (6') and the fourth ultrasonic reflection column (9'), the second ultrasonic transducer (11') is provided with a second integrator (12'), and the top of the third ultrasonic reflection column (6') and the fourth ultrasonic reflection column (9') are respectively provided with a third reflection surface (5' ) and a fourth reflective surface (8'), the third reflective surface (5') and the fourth reflective surface (8') face each other;

The first integrator (12) and the second integrator (12') respectively output the first flow value to the comparator (10) through the first communication port (13) and the second communication port (13') and the second flow value, the comparator (10) compares the first flow value and the second flow value respectively from the first integrator and the second integrator to judge the Whether the smart water meter fails;

The comparator (10) outputs a fault alarm signal when the first flow information and the second flow information are not equal, and the fault alarm signal is used to drive an audible alarm and/or a set of light emitting diodes;

The base body (2) is made of brass; the bottoms of the first ultrasonic reflection column - the fourth ultrasonic reflection column are all provided with vertical hob lines, and the first ultrasonic reflection column - the fourth ultrasonic reflection column are made of stainless steel . the

When the present invention is installed, the ambient temperature when the first ultrasonic reflection column-the fourth ultrasonic reflection column is assembled is below 5°C, and the included angle between the reflection surface and the axis of the ultrasonic reflection column is 45°; the first ultrasonic reflection column-the fourth The ultrasonic reflection column is respectively installed in the first spherical expansion cavity - the fourth spherical expansion cavity by extrusion; the height of the ultrasonic reflection column is determined according to the specifications of the base meter body (2), so that after the ultrasonic reflection column is installed in the spherical expansion cavity, The center of its reflective surface is on the central axis of the base watch body 2 . the

When the present invention is in use, the signal lines of the first ultrasonic transducer (11) on the first spherical expansion cavity (4) and the second spherical expansion cavity (7) on the base meter body (2) are connected to The first integrator (12), thereby transmitting the first flow sensing data to the first integrator (12), the first integrator (12) calculates the first flow value according to the first flow sensing data, and the first integral The external communication interface on the instrument (12) is connected to the external M-BUS communication line, the IC card interface on the first integrator (12) reads the amount of water purchased by the user, and the motor control interface is controlled according to the 3V or 5V voltage output by the motor. On-off of the water inlet valve located at the water inlet of the water meter; the second ultrasonic transducer (11') on the third spherical expansion chamber (4') and the fourth spherical expansion chamber (7') on the base meter body (2) The signal line is connected to the second integrator (12') through the flow sensor interface, so as to transmit the second flow sensing data to the second integrator (12'), and the second integrator (12') The second flow value is calculated from the data, the external communication interface on the second integrator (12') is connected to the external M-BUS communication line, and the IC card interface on the second integrator (12') reads the amount of water purchased by the user. The motor control interface controls the on-off of the water outlet valve located at the water outlet of the water meter according to the 3V or 5V voltage output by the motor.

When working, the ultrasonic transducer on the first spherical expansion cavity (4) emits ultrasonic waves, and the ultrasonic waves are reflected from the first reflective surface (5) on the first ultrasonic reflection column to the second reflective surface (8), and finally by the second reflective surface The ultrasonic transducer on the spherical expansion chamber (7) receives the speed, frequency and time signals of the ultrasonic waves. After the signal is received, the ultrasonic transducer on the second spherical expansion chamber (7) emits ultrasonic waves, which reciprocates in this way; Ultrasonic waves will accelerate propagation in the flow direction, while ultrasonic waves will delay propagation in the reverse flow direction. The flow velocity of the liquid can be converted by using the time difference between forward and reverse flow, and the flow rate of water can be calculated, so that the first integrator (12) can be obtained first flow value. In the same way, a second flow value can be obtained in the second integrator (12').

The first integrator (12) and the second integrator (12') send the first flow value and the second flow value to the comparator (10) through the first communication port (13) and the second communication port (13') respectively , the comparator (10) compares the first flow value with the second flow value: when the flow measurement of either the first integrator (12) or the second integrator (12') fails, it will cause the first flow There is a large deviation between the value and the second flow value. At this time, the comparator outputs a fault alarm signal to drive an audible alarm and/or a group of light-emitting diodes, thereby reminding the user to troubleshoot; when the water meter leaks, different positions in the water meter The water pressure and flow rate at the location are not the same, resulting in a large deviation between the first flow value and the second flow value. Reminds the user to troubleshoot.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. The many features and advantages of these embodiments are apparent from this detailed description, and thus the appended claims are intended to cover all such features and advantages of these embodiments that fall within their true spirit and scope. Moreover, since many modifications and changes will readily occur to those skilled in the art, it is not intended to limit the embodiments of the present invention to the precise structures and operations illustrated and described, but to cover all suitable modifications and equivalents falling within the scope thereof thing.

Specific embodiments of the invention are disclosed herein. Those of ordinary skill in the art will readily recognize that the present invention has other applications in other environments. In fact, many implementations and implementations exist. The appended claims are in no way intended to limit the scope of the invention to the specific embodiments described above. In addition, any reference to "means for" is intended to delineate elements and explain the means-plus-function of the claims, and any referenced elements that do not specifically use "means for" are not intended to be used A means-plus-function element is understood even if the claim includes the word "means".

While the invention has been shown and described with respect to a particular preferred embodiment or embodiments, it is obvious that equivalent modifications and alterations will occur to those skilled in the art upon the reading and understanding of the specification and drawings. In particular, with regard to the various functions performed by the aforementioned elements (parts, components, means, compositions, etc.), unless otherwise indicated, it is intended that terms used to describe these elements (including references to "means") correspond to specific Any element that is functional (ie, functionally equivalent), even if that element is structurally different from the disclosed structure that performs that function in the illustrated example embodiment or embodiments of the invention. Additionally, while specific features of the invention have been described above with respect to only one or more of several illustrated embodiments, such features may be incorporated as needed and considered advantageous to any given or particular application. Combined with one or more other features of other embodiments.

Claims (3)

1. a small-bore ultrasonic intelligent water meter, comprises base table body (2), and base table body (2) is provided with water inlet (1) and water delivering orifice (3), it is characterized in that:

Base table body (2) is provided with the first spherical expansion chamber (4) and the second spherical expansion chamber (7), the first spherical expansion chamber (4) and the second spherical expansion chamber (7) top are respectively equipped with the first ultrasonic transducer (11), bottom is respectively equipped with the first ultrasonic reflections column (6) and the second ultrasonic reflections column (9), described the first ultrasonic transducer (11) is provided with first integral instrument (12), described the first ultrasonic reflections column (6) and described the second ultrasonic reflections column (9) top are respectively equipped with the first reflecting surface (5) and the second reflecting surface (8), described the first reflecting surface (5) and described the second reflecting surface (8) are in opposite directions,

On base table body (2), be also provided with the 3rd spherical expansion chamber (4 ') and the 4th spherical expansion chamber (7 '), described the 3rd spherical expansion chamber (4 ') and described the 4th spherical expansion chamber (7 ') top are respectively equipped with the second ultrasonic transducer (11 '), bottom is respectively equipped with the 3rd ultrasonic reflections column (6 ') and the 4th ultrasonic reflections column (9 '), described the second ultrasonic transducer (11 ') is provided with second integral instrument (12 '), described the 3rd ultrasonic reflections column (6 ') and described the 4th ultrasonic reflections column (9 ') top are respectively equipped with the 3rd reflecting surface (5 ') and the 4th reflecting surface (8 '), described the 3rd reflecting surface (5 ') and described the 4th reflecting surface (8 ') are in opposite directions,

Described first integral instrument (12) and described second integral instrument (12 '), export first-class value and second value by the first communication port (13) and second communication port (13 ') to comparer (10) respectively, described comparer (10) compares described first-class value and the described second value from described first integral instrument (12) and described second integral instrument (12 ') respectively, to judge whether described intellectual water meter breaks down.

2. small-bore ultrasonic intelligent water meter according to claim 1, is characterized in that: described comparer (10) is exported failure alarm signal when unequal in described first flow information and described the second flow information.

3. small-bore ultrasonic intelligent water meter according to claim 1 and 2, is characterized in that: described failure alarm signal is used for driving audible alarm and/or one group of light emitting diode.