CN2468019Y

CN2468019Y - Non-power remote transmitting gasometer

Info

Publication number: CN2468019Y
Application number: CN 00261707
Authority: CN
Inventors: 曹卫东
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-28
Filing date: 2000-11-28
Publication date: 2001-12-26
Anticipated expiration: 2010-11-28

Abstract

The utility model discloses a remote transmitting gas meter without a power supply. On the basis of a gas meter with the original mode, a carrying counting is carried out at the counting part needing to be read by utilizing the intermittent carrying counting mode of an electric reading type mechanical counter, the mechanical position is converted into an electrical signal to carry out the remote transmission by utilizing a photoelectric sensor and a coding disc, and the purpose of the counting by the remote reading can be realized. The utility model has the advantages that the function of the memory for digits can be realized without the maintenance of a power supply.

Description

The non-transformer remote transmitting gas meter

The utility model is a kind of gas meter, flow meter of copy reading out of doors, is specially adapted to the centralized management of residential houses gas meter, flow meter.

The prior art gas meter, flow meter partly is made up of magnetic coupling, gear and mechanical count at present.When gas process gas meter, air-flow rotates wing wheel, wing wheel drives a pair of magnetic coupling and rotates, the rotation of magnetic coupling is after multi-speed exchanged mechanism slows down, be transformed to the metering initial position (* 0.0001) of gas quantity, and be to carry out the successive carry counting at 10: 1 with ratio of gear, produce * 0.001, * 0.01, * 0.1 metering position, pointer is indicated 0-9 continuously.This kind gas meter, flow meter is installed on the indoor air inlet pipeline, and personnel bring great inconvenience to the copy reading table.

The purpose of this utility model provides a kind of energy will make things convenient for the concentrated copy reading of gas meter, flow meter with the gas meter, flow meter of gas reading teletransmission to outdoor demonstration.

The utility model is realized with following technical scheme: on the basis of existing gas meter, flow meter, convert the counting that needs copy reading to the electric signal teletransmission.Concrete scheme speed gear right * connect the mechanical counter that counting can be converted to the electric signal teletransmission on 0.1 connecting shaft, this counter has counter wheel, thumb wheel, code-wheel, infrared photoelectric sensor to constitute, * 1, * 10, * 100, * counter wheel, four code-wheels and four infrared photoelectric sensors respectively are housed on the counting wheel shaft of 1000 metering positions, the thumb wheel of device and the interlock that is meshed with two counter wheels between two counter wheels, realize the position with between connect.The counter wheel at one's own department or unit is last one by rounding wheel, it is again the rounding wheel of next bit, code-wheel is weaved into coding with printing opacity and shading, corresponding on circumferential position with each number of pointer indication 0-9, the coding of infrared photoelectric sensor capturing and coding dish also converts electric signal to for teletransmission, realizes the long-range copy reading of combustion gas index.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a contour structures synoptic diagram of the present utility model;

Fig. 2 is a speed change counting structure stretch-out view;

Fig. 3 is coding circuit figure;

Fig. 4 is the counter wheel structural perspective;

Fig. 5 is the thumb wheel structural perspective;

With reference to Fig. 2 and Fig. 3, * 1, * 10, * 100, * (3) four code-wheels of a counter wheel (5) and four infrared photoelectric sensors (6) respectively are housed on the counting wheel shaft of 1000 metering positions, one thumb wheel (4) is arranged between two counter wheels, and be meshed with counter wheel, with reference to Fig. 4, even five equilibrium has 20 counting teeth (7) on the circumference of counter wheel one end face, and each number of 0-9 respectively accounts for two counting teeth, there are two moving teeth (8) other end, and tooth pitch equates with the counting tooth pitch.With reference to Fig. 5, thumb wheel is a pinion wheel, five equilibrium is provided with three long teeth (9), interval three short teeth (10), tooth pitch equals to count space width, thumb wheel has the end face of short tooth to have an end of two moving teeth to be meshed with a last counter wheel (rounding wheel) during installation, does not have the end face of short tooth and the end face engagement that next bit counter wheel (promptly by rounding wheel) has 20 counting teeth.When not needing carry, two long teeth of thumb wheel ride on the rounding wheel, and thumb wheel is positioned.When rounding wheel from 0 to 9 needed carry, two moving tooth was stirred the short tooth and the long tooth of thumb wheel respectively fast, and thumb wheel is stirred simultaneously by two countings of rounding wheel between cog, and promptly a number has been finished intermittently carry.After the carry, two long teeth of thumb wheel ride over again on the rounding wheel, and thumb wheel is positioned, and wait for location next time.So, carry out having a rest property carry counting system by turn.A pointer is respectively installed on top at each counting wheel shaft, rotates synchronously with counter wheel, indicates a number among the 0-9 as one digit number respectively, can read at the scene.Code-wheel is weaved into coding with printing opacity and shading, adopts cyclic binary code.

(0～9) coding schedule (scale-of-two ring sign indicating number)

Numeral	?1	?2	?3	?4	?5	?6	?7	?8	?9	Explanation
Numeral	?1	?2	?3	?4	?5	?6	?7	?8	?9	Explanation	First code-wheel	0	?0	?0	?0	?0	?1	?1	?1	?1	?1	On behalf of code-disc printing opacity " 1 ", " 0 " represent the code-disc shading
Second code-wheel	?1	?1	?1	?1	?1	?1	?1	?1	?0		First code-wheel	0	?0	?0	?0	?0	?1	?1	?1	?1	?1
Second code-wheel	?1	?1	?1	?1	?1	?1	?1	?1	?0	The 3rd code-wheel	1	?1	?1	?0	?0	?0	?0	?1	?1	?1
The 4th code-wheel	?0	?1	?1	?0	0	?1	1	?0	?0	The 3rd code-wheel	1	?1	?1	?0	?0	?0	?0	?1	?1	?1

Four infrared photoelectric sensors convert this coded signal to electric signal, and corresponding on circumferential position with each number of pointer indication 0-9, have realized the conversion and the teletransmission of digital signal like this.With reference to Fig. 3, resistance R ₁Be current-limiting resistance, R ₂Be sample resistance, during the code-wheel printing opacity, D ₁, D ₂, D ₃, D ₄Being low level " 0 " output, is high level " 1 " output during the code-wheel shading.Power supply E is external supply when checking meter, and cuts off after the reading of checking meter finishes.

The advantage of this gas meter, flow meter is: coding is synchronous with the number of pointer indication at mechanical location, has the code signal memory function, need not power supply and keeps counting. Adopt the binary system loop coding to combine with the batch (-type) carry counting system, the signal conversion is reliable, accurate.

Claims

1, a kind of non-transformer remote transmitting gas meter, by gear, magnetic coupling (1), gear mesh (2), pointer is formed, it is characterized in that former speed gear right * connect the mechanical counter that counting can be converted to the electric signal teletransmission on 0.1 connecting shaft, this counter has counter wheel (3), thumb wheel (4), code-wheel (5), infrared photoelectric sensor (6) constitutes, * 1, * 10, * 100, on the counting wheel shaft of * 1000 metering positions a counter wheel is housed respectively, four code-wheels and four infrared photoelectric sensors, the thumb wheel of device and the interlock that is meshed with two counter wheels between two counter wheels, realize the position with between connect, the counter wheel at one's own department or unit is last one by rounding wheel, it is again the rounding wheel of next bit, code-wheel is weaved into coding with printing opacity and shading, corresponding on circumferential position with each number of pointer indication 0-9, the coding of infrared light transducer[sensor capturing and coding dish also converts electric signal to for teletransmission.

2, gas meter, flow meter according to claim 1 is characterized in that code-wheel adopts the cyclic binary code coding.

3, gas meter, flow meter according to claim 1 is characterized in that even five equilibrium has 20 counting teeth (7) on an end face circumference of counter wheel, and the other end has two moving teeth (8).

4, gas meter, flow meter according to claim 1 is characterized in that the space width of two moving teeth equates with the counting space width.

5, gas meter, flow meter according to claim 1 is characterized in that thumb wheel has six teeth, three long teeth (9), three short teeth (10) at interval.

6, according to claim 1,3 or 4 described gas meter, flow meters, it is characterized in that thumb wheel has an end of short tooth and the engagement of a end that a last counter wheel has two teeth, an end that does not have short tooth has ends of 20 counting teeth to mesh with the next bit counter wheel.