CN2463800Y

CN2463800Y - IC card intelligent water meter

Info

Publication number: CN2463800Y
Application number: CN 00221490
Authority: CN
Inventors: 周放
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-22
Filing date: 2000-08-22
Publication date: 2001-12-05
Anticipated expiration: 2010-08-22

Abstract

The utility model relates to a meter integrating a base meter and a card electric controller, and the meter is designed according to the standard of the size for the installation on the basis of a GB/T778 wet-type water meter. The utility model is characterized in that in order to satisfy the requirements of the standard of the size for the installation and the metering accuracy for voltage loss of the wet-type water meter, a water way which is from a water inlet and a water outlet forms an omega shape; namely the water outlet end is additionally provided with a cavity body and a bent part with an angle of 90 DEG; an electric control valve is arranged in the cavity body, and moment for opening / closing the valve and the direction of water pressure are in orthogonal intersection.

Description

The IC-card intellectual water meter

The utility model relates to cold-water meter, and is particularly a kind of based on the IC-card intellectual water meter that designs on the traditional wet water meter structure basis, belongs to the measuring apparatus of daily water consumption.

Conventional water meter generally is mechanical, drives water meter machinery by the water yield of passing through and measures, and show on dial plate, is looked meter and charge from house to house by the personnel of tabling look-up.Be accompanied by the continuous expansion of city-building scale, water undertaking, urban construction and administration departments are also more and more higher to the requirement that improves the water supply management level.The IC-card water meter is a kind of novel measuring instrument, it is to be the metering base table with the cold-water meter, with the IC-card is medium, install a kind of discharge metering instrument that electronic controller and electrically-controlled valve are formed additional with pre paid functionality, because it has IC-card read-write capability and electrically-controlled valve control function, for the water measurement management provides new management mode, can be used for solving problems such as the existing difficulty of tabling look-up, difficult charge.More domestic enterprises have done many work in IC-card water meter field, more existing IC-card water meter products emerge, also there are some patent applicants also to propose some patented claims in addition in IC-card water meter field, but, no matter be patented claim that proposes or the product that has emerged, exist obvious defects: 1. the IC-card water meter design based on dry-type meter is not suitable for the national conditions that China adopts the wet-type meter metering mostly; 2. be the IC-card water meter of basic engineering with the wet-type meter, adopt split type structure to make troubles by dress, use, and security be relatively poor to the user.

The utility model is to be documents with ZL98233233.5, according to base table and the IC-card electric control gear incorporate instrument of GB/T778 wet-type meter by the design of dress dimensional standard.Owing to be subjected to restriction by the dress size, and the requirement of index such as relevant crushing in the GB, therefore on water route design, signals collecting and sensing element, electrically-controlled valve body structure, all done and existing different design.

The technical solution of the utility model comprises the prior mechanical water meter and is installed in magnet on the water meter and water yield sampling apparatus that flow sensor is formed, the water meter pedestal is provided with housing, the housing internal fixation has the IC-card circuit board, circuit board is provided with single-chip microcomputer, valve controling circuit, prompt alarm circuit and power supply etc., housing is provided with the IC-card socket, also be provided with motor and reducer casing in the housing, reduction gearbox output shaft connects with electrically-controlled valve, opening of electrically-controlled valve, close by determined by monolithic processor controlled motor and position-limit mechanism, it is characterized in that wet-type meter is by dress size and crushing and measuring accuracy requirement among the GB/T778 in order to satisfy, the water route design is from water inlet to water delivering orifice Shape has promptly been set up a cavity and 90 ° of bendings in the water side, electrically-controlled valve is arranged in the cavity, and close/open valve moment and hydraulic pressure direction quadrature.Electrically-controlled valve is a ceramic valve, contains, fixed valve plate the coaxial rotation that links of the output shaft of its moving valve plate and motor reduction gearbox, valve body is provided with known position-limit mechanism, open when position-limit mechanism makes valve, valve when location, motor produces overcurrent, the detection by single-chip microcomputer provides power-off signal makes the motor stall.Electrically-controlled valve is a ceramic valve, contain, fixed valve plate, the coaxial rotation that links of the output shaft of its moving valve plate and motor reduction gearbox, and also be associated with the dial of coaxial rotation on the motor reduction gearbox output shaft, dial one side is provided with limitation travel switch, the contact of travel switch contacts or disengaged position with dial, makes lead limit switch export corresponding electric signal opening or stop to the Single-chip Controlling motor.Dial is square, every half-twist, and its wedge angle touches limitation travel switch once, and motor is unidirectional electric rotating machine.Fixed valve plate and watchcase adopt the circular seal ring radial seal that is enclosed within on the fixed valve plate in the sealing at water delivering orifice place.Water yield sampling magnet is installed on the 0.01 or 0.1 calibration driving gear of wet type mechanical water meter, and flow sensor adopts tongue tube, and tongue tube is loaded in the triggering magnetic field range of magnet, and the field signal of magnet is converted into electric signal.

Drawings and Examples.

Fig. 1 is the one-piece construction synoptic diagram (main looking) of an embodiment of the utility model;

Fig. 2 is the section of overlooking of Fig. 1.

Referring to Fig. 1,2,1 is the wet type mechanical water meter shell that present family generally uses, 2 is the copper gland on the water meter, 3 are water meter measurement observation lid, 18 is the water meter transparent surface, 19 is the machinery core of water meter, 20 is the transmission gear in the watch core, 21 for being located at the magnet on 0.01 (or 0.1) transmission retaining gear, the magnetic induction signal that magnet sends after rotating with gear is converted to electric metering signal through tongue tube 22 and is stored in the single-chip microcomputer, 6 for being located at the control zone shell on the watermeter shell, and 4 is motor in the shell of control zone, and 5 is reducer casing, 8 is motor cabinet, 7 is motor reducer output shaft (shift fork), and its stirs on the one hand the moving valve plate 15 of ceramic cartridge by intermediate shaft 14, and produces displacement between the fixed valve plate 16 and conducting or close.On the other hand, also be associated with the square dial 9 with axle interlock on the motor shaft 7, be subjected to dial to touch the limitation travel switch 10 of action, 90 ° of dial revolutions trigger limitation travel switch once, and offering the single-chip microcomputer positioning signal, and drive motor stops or changes.(also having a kind of control mode is knownly single-chip microcomputer to be provided stop motor rotating order with over current of motor, and this mode is existing to be used, and no longer figures).12 is valve seat, and 11 is valve seat insert, and 13 is Simmer ring, and 17 is the sealing between valve seat and the water meter shell, and this kind sealing means seals (axial seal) by the normal pressure of valve seat substantially, and the normal pressure of valve seat is relevant with the hydraulic pressure size.A kind of improved sealing means is that O-ring seal is enclosed within on the valve seat of fixed valve plate, and by the pretightning force crush seal (radial seal) of valve body, irrelevant with the size variation of hydraulic pressure, sealing effectiveness is better.23 is the IC-card circuit board, and 24 is battery.Fig. 1 arrow is depicted as water (flow) direction, and water enters water meter and is to flowing out water meter as can be seen

Shape, the outlet current have turned one 90 ° bending, this design is that length is the requirement of 165mm/195mm between the GB/T778 wet-type meter import and export in order to adapt to, reduced the size of water inlet rectifier terminal in the design, having increased a cavity and 90 ° of bendings in the water side, is in order to guarantee that crushing satisfies GB.

Principle of work of the present utility model is identical with existing IC-card water meter, when purchasing water, the client imports the amount of money number that IC-card is purchased in advance by selling water management system, after the user inserts IC-card the water meter deck and obtains prompting and confirm, transfer to IC-card, after water meter measurement arrives forward purchasing amount of money setting alarming value, the prompting user with purchasing water, will close otherwise reach pass valve predetermined value late gate again.

The utility model has the advantages that:

1. close/open valve moment and hydraulic pressure direction quadrature have reduced the impact of hydraulic pressure to required moment, protect Demonstrate,proved the long-term low-power consumption work of circuit;

2. motor is when carrying out close/open valve, as adopts unidirectional rotation, then can avoid the circuit complexity that brings of common two-way rotation and to the influence of electrical machinery life;

3. operating part and water are isolated, and guarantee functional reliability;

4. satisfying domestic a large amount of at present wet-type meter that uses by adorning size, is that old table of transformation and new user installation are all very convenient, is to transform present water supply to reach the optimal product of prepaid.

Claims

1.IC card intellectual water meter, comprise the prior mechanical water meter and be installed in magnet on the water meter and water yield sampling apparatus that flow sensor is formed, the water meter pedestal is provided with housing, the housing internal fixation has the IC-card circuit board, circuit board is provided with single-chip microcomputer, valve controling circuit, prompt alarm circuit and power supply etc., and housing is provided with the IC-card socket, also is provided with motor and reducer casing in the housing, reduction gearbox output shaft connects with electrically-controlled valve, it is characterized in that the water route design is from water inlet to water delivering orifice Shape has promptly been set up a cavity and 90 bendings in the water side, electrically-controlled valve is arranged in the cavity, and close/open valve moment and hydraulic pressure direction quadrature.

2. IC-card intellectual water meter according to claim 1 is characterized in that said electrically-controlled valve is a ceramic valve, contains, fixed valve plate, and the coaxial rotation that links of the output shaft of its moving valve plate and motor reduction gearbox, valve body is provided with known position-limit mechanism.

3. IC-card intellectual water meter according to claim 1, it is characterized in that said electrically-controlled valve is a ceramic valve, contain, fixed valve plate, the coaxial rotation that links of the output shaft of its moving valve plate and motor reduction gearbox, and also be associated with the dial of coaxial rotation on the motor reduction gearbox output shaft, driver chuck one side is provided with limitation travel switch.

4. IC-card intellectual water meter according to claim 3 it is characterized in that said dial is square, and motor is unidirectional electric rotating machine.

5. according to claim 1 or 2 or 3 described IC-card intellectual water meters, it is characterized in that the sealing of fixed valve plate and watchcase, adopt the circular seal ring radial seal that is enclosed within fixed valve plate at the water delivering orifice place.

6. IC-card intellectual water meter according to claim 5, it is characterized in that said water yield sampling magnet be installed in the wet type mechanical water meter O.01 or on the 0.1 calibration driving gear, flow sensor adopts tongue tube, tongue tube is loaded in the triggering magnetic field range of magnet.