CN1157590C - Electronic water (gas) meter and its meter reading transcribing application system - Google Patents

Abstract

The present invention provides a design of a novel water (gas) meter and an application system, which keeps the basic working principle and the appearance structure of the available water (gas) meter. Under the condition of not needing outer power supply, the invention can separate meter reading from water (gas) use.

Description

A kind of electronics water or gas meter

The present invention relates to a kind of novel electron water or gas meter and the application system of checking meter.

Tap water and coal gas relate to the important component part of huge numbers of families' city infrastructure.The family of checking meter out is the certainty of era development.

The another kind of method that Chinese patent application such as CN1172946A propose is development and similar card water meter and the gas meter of clasp type electricity meter.In many Chinese invention patent applications such as CN1182205, CN1179562A, the electronics metered scheme of current has been proposed, this is that some depend on photoelectric counter or similar sensor and counting circuit, when the water in the water supply pipe was in flow state, photoelectric sensor just began action and sends height-low-signal levels.These designs all have problems at aspects such as long-time stability and reliabilities.

An important progress proposes in utility model patent CN2303272Y, thinking according to this design, in water meter with mechanical counter demonstration reading, with counter letter disk tangential direction read with brush with the counter number dish on digital corresponding resistance value, thereby realize power free measurement.

Need standing power supply owing to eliminated in the electronic water meter design, so this design is undoubtedly the impressive progress that water rate is copied and accepted in the water meter intellectuality.Certainly, also there are some problems in this design.

This design is to design on a kind of E type water meter basis commonly used at present.Have the difficulty that is difficult to overcome in implementation process, at first, resistance is installed in the tangential direction of digital disk, influences the demonstration of water meter numeral mechanical counter.Secondly, the running of each digital disk of the water meter of use mechanical counter is not linear with current, but only is the geneva motion state when carry.If taken into full account the measurement of digital disk stationary state, resistance value is difficult to measure during transition so.Thirdly, this design is difficult to sealing, so this design is difficult to consider to use on wet-type meter.

For the problems referred to above, it is that reading display mode, the continuous linear mechanical type water meter (being commonly referred to as C type water meter) that rotates are electronics water or the gas meter that the basis adds the plane potentiometer with pointer (rather than digital disk) that the present invention proposes a kind of, thereby eliminate digital dish-type (E type water meter) and intermittently rotate the uncertainty that the sensor electricity amount conversion that causes brings, simultaneously, the mechanical fractional part value demonstration of electric parameter measurement part with pointer separated, make electrometrics amount amount not influence original mechanical display mode.

Electronics water or gas meter mainly are made up of physical construction, flow-electrical signal conversion structure and extension line structure.

The physical construction of the physical construction of electronics water or gas meter and light water or gas or table is basic identical, can be compatible at aspect such as design standards, hot-water heating installation and traditional water or gas meter to guarantee electronic water meter and conventional water meter.

Consumption-electrical signal conversion in electronics water or the gas meter is emphasis of the present invention place, basic design of the present invention is to indicate the position linearity ground of reading to be transformed into resistance value in common water meter, thereby the survey read procedure of water or gas consumption is transformed into the electrical measurement process that can separate with water meter.

This structure is made up of parts such as brush carrier 1, disk resistive element 2, matrix 3, slip insulator 5, supporting structure 4 and 7, conductive bar 9, compound reed 10 and brushes 11.

One end of brush carrier 1 is a transmission shaft, and there is mechanical transmission mechanism (as gear) to link to each other with the mechanical transmission mechanism of water or gas meter at axle head, the other end is a plane of rotation, be provided with the brush hole in suitable partial center position, so that brush 11 to be installed, be provided with screw with clip 10 in other suitable partial center position, be provided with shallow slot, so that slip insulator 5 to be installed at its back side.

Disk resistive element 2 provides the resistive elements of a threshold value.Disk resistive element 2 is formed with lead-in wire 201 by measuring indicating section 203.Be provided with clearance for insulation 205 at the afterbody 204 of measuring indicating section 203 and lead-in wire 201.In order to carry out the gap compensation, 204 afterbodys are suitably widened, so that compensating brush is installed.For water meter, the disk resistive element except should having good abrasion resistance, unusual good moisture resistance energy also.Slip insulator 5 is a kind of rubber or flexible plastic part, contacts with disk resistive element 2 and matrix 3 under a suitable pressure, with the current paths of blocking-up disk resistive element 2 with water body around it.

Compound reed 10 is made up of pressure connection terminal 1001,1,003 three parts of brush end 1002 and fixed orifice.Pressure connection terminal 601 is introduced measuring-signal from conductive bar 9, provides a pressure that slip insulator 5 is contacted with disk resistive element 2 and matrix 3 simultaneously.Brush end 1002 provides a pressure for brush 11 contacts with disk resistive element 2.Fixed orifice is fixed on compound reed 10 on the brush carrier 1.

Except resistive element being designed to disc-shape, resistive element can also be designed to cylindrical shape.In addition, brush can also be fixed, simultaneously the planar resistive element of cylinder be linked to each other with water or gas meter rotating shaft, with metering aqueous vapor consumption.

In the measuring process, measuring-signal is drawn from the water meter metal shell 16 as ground wire, cause binding post 8 by lead, pass through conductive bar 9, compound reed 10, brush 11, disk resistive element 2 successively, thoroughly doing away with edge lead 12 from another draws, and, form and measure current return by the binding post 17 drawing-off water off-balancesheets that are surrounded by insulation course 18.Still design on the dial plate of electronics water or gas meter original point gear 19 is arranged.The physical construction 21,22 and 23 of water meter is similar to the standard machinery water meter.The less relevant mechanism of electronics metering of volume is installed in water meter inside.

When rotating shaft 1 water of said mechanism or the suitable rotating shaft in the gas meter physical construction link to each other, when the rotating shaft in the water meter physical construction is rotated, brush 11 rotates on disk resistive element 2 thereupon, like this, measures the metering reading that water meter just can be measured and calculate to the indicated resistance value of potentiometer.

For convenience's sake, in this manual this structure is abbreviated as round potentiometer A.

Because the relation of resolution aspect, complete electronics water or gas meter need several round potentiometers to indicate the reading of different class respectively sometimes.

The present invention does not change the basic measuring principle of water or gas meter substantially, does not change the contour structures of water or gas meter.This system not only can realize reading the ammeter directly, and can improve the speed of checking meter.In addition, the unit price is not expensive, is fit to the national conditions of China.

The flow of Fig. 1 electronics water or gas meter-resistance throw-over gear synoptic diagram;

Fig. 2 is a disk resistive element synoptic diagram;

Fig. 3 is compound reed synoptic diagram;

Fig. 4 is the electronic water meter synoptic diagram;

Under present technical background, can adopt glass glaze is that resistive element constitutes water or the gas meter of disk resistive element 2 for present widely used 10000 cubic metres of full scales, use 2 independently round potentiometer A, link to each other corresponding 10 cubic metres of round potentiometers and 1000 cubic metres of round potentiometers of being called respectively with 1000 cubic metres of rotating shafts with 10 cubic metres of axles of common water meter.Every electronic water meter also needs 2 single data to read lead-in wire except that ground wire like this.

Measure controller and be provided with 4 primary outlets.They are respectively ground wire 307, power lead, control line and slotted line.Respectively with the power lead 204 of meter reader 20, control line 205 and slotted line 206.

Claims (1)

1, a kind of tap water or gas flow electronic weighing instrument, as sensor, the resistive element that it is characterized in that employed potentiometer is a kind of circular ring type linear resistance body that opening is arranged that is arranged on a kind of matrix with potentiometer for it; At the opening part of circular ring type resistive element, the end formation extension line that stretches out; Resistive element inwardly has one section extension at the other end of opening part, so that compensating brush to be installed; Being provided with on resistive element can be with the slip insulator of brush carrier activity, to alleviate the influence of resistive element medium on every side to the resistive element electric property.

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