KR200364411Y1 - A pulse generating structure for gas meter - Google Patents

Abstract

The present invention relates to a pulse generating structure of a gas meter, which is installed in a gas distribution line to count the amount of use according to the flow of gas, and at the same time, it is possible to read remotely as a pulse signal by the interaction between the magnet and the reed switch.

The present invention is to install a diaphragm operating in accordance with the volume change according to the presence or absence of gas in the main body having the inlet and outlet, the gas meter configured to count the gas consumption and remotely detect the main body of the gas meter A concave groove is formed at the front of the upper case, and a relay gear with a magnet is installed, and a cover for closing the concave groove is provided with a reed switch at a position corresponding to the magnet to measure pulses. It is configured to be.

Description

A pulse generating structure for gas meter

The present invention relates to a gas meter, and more particularly, it is installed in a gas distribution line to count the amount of usage according to the gas flow, and at the same time, as a pulse signal (pulse signal) by interaction between a magnet and a reed switch, a remote meter reading This relates to a pulse generating structure of a gas meter that makes this possible.

As is well known, a general gas meter is installed in a gas distribution line such as LPG or city gas supplied to a house, various buildings, etc., so that gas usage can be read. Through the interlocking gears installed, the number plate of the counter can be rotated to measure or to measure the pulse signal by the magnet and the lease switch for remote reading.

As a related art in this regard, for example, the technology disclosed in Korean Unexamined Utility Model Publication No. 1998-0002971 discloses that a magnet is installed in an inner groove of a lower number difference among a series of number differences coaxially installed in a meter frame, By mounting the printed circuit board mounted so that the reed switch is located close to the outer circumferential surface of any one of these numerical differences, the reed switch operates according to the rotation of the numerical difference to generate one pulse per unit volume. It would be.

In addition, the Korean Utility Model Registration No. 20-0268280, the rotating plate for mounting the counter rotating plate with a magnet on the inside of the viewing window, and forming a recess in one side of the viewing window and attaching a case in which a sensor is embedded, the rotating plate The sensor is located coaxially so that the number of magnets can be measured when the rotor is operating in accordance with the gas flow.

However, in the prior art disclosed in the former, since the pulse signal is measured depending on the cross-sectional area of the magnet embedded on one side of the numerical difference that rotates in accordance with the gas flow and the reed switch arranged to face the magnet, mechanical Frequently, a pulse signal is missed due to an error, and this phenomenon accumulates, making gas measurement very unstable.

In addition, in the latter case, since the recessed part is formed in the see-through window installed in the front part of the counter case and the sensor case in which the sensor is embedded must be manufactured and mounted separately, the assembly process becomes complicated and the unit cost increases. .

The present invention has been made in view of the above problems, and an object of the present invention is to install a magnet on a rib of a relay gear that rotates according to a gas flow to operate a counter part, and at the same time, a reed switch on a cover of a corresponding position By providing a simple structure to provide a pulse generating structure of the gas meter can be measured more accurately the pulse signal.

1 is an exploded perspective view of main parts for explaining the pulse generating structure of the gas meter according to the present invention;

2 is a planar configuration diagram in a state where the upper case is removed;

3 is a front schematic view in a state where a cover mounted on a front portion of an upper case is removed;

4 is a plan configuration diagram in a state in which the cover is mounted;

5 is a partial cross-sectional view for explaining a main configuration of the present invention.

<Explanation of symbols for main parts of drawing>

10: gas meter 11: inlet

12: outlet portion 13A: upper case

13B: lower case 14: main body

15a, 15b: support shaft 16A: first link

16B: second link 17: rotating body

18: movable body 19: bracket

20: operating gear 21: recessed groove

22: drive gear 23: relay gear

24: interlocking gear 23a, 24a: shaft

25: counter part 26: frame

27: numeral plate 28a: first gear

28b: second gear 29a: rib

30: magnet 31: cover

32A: fixed plate 32B: viewing window

33: holder 34: reed switch

The present invention for achieving the object as described above, the diaphragm operating by the volume change in accordance with the presence or absence of gas in the main body having the inlet, outlet, configured to count the gas consumption and remotely detected at the same time In the gas meter, a recess groove is formed in the front portion of the upper case constituting the main body of the gas meter, and a relay gear with a magnet is installed, and a cover for closing the recess groove is positioned at a position corresponding to the magnet. Reed switch is installed is characterized in that configured to measure the pulse.

The relay gear is interposed between the drive gear rotating by the gas pressure supplied into the main body of the gas meter and the interlocking gear for operating the number plates of the counter part.

The relay gear may include first and second gears having different diameters, and a magnet may be mounted on one of the ribs formed on the flat plate, and the reed switch may have a bottom surface of a body constituting the cover. It is mounted in a holder disposed inside.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 are diagrams for explaining the pulse generating structure of the gas meter according to the present invention, first, as shown in FIG. 1, the gas meter 10 includes an inlet part 11 and an outlet part 12. The main body 14 is constituted by an upper case 13A and a lower case 13B attached to the lower end of the upper case 13A so as to maintain airtightness. Conventional diaphragms (not shown) are provided, which operate due to the resulting volume change.

As shown in FIG. 2, inside the upper case 13A, first and second links 16A and 16B are disposed to rotate about the support shafts 15a and 15b according to the operation of the diaphragm. By rotating the rotary body 17 and the movable body 18 by these first and second links 16A and 16B, the operating gear 20 installed in the center of the bracket 19 can be rotated. Will be.

In addition, a concave inlet groove 21 is formed in the front portion of the upper case 13A, and in the concave inlet groove 21, a driving gear 22 is rotated by the operating gear 20. 23 and the interlocking gear 24 are mounted on the respective shafts 23a and 24a and engaged with each other, and are sequentially arranged in the frame 26 constituting the counter section 25 by the interlocking gear 24. By rotating the number plate 27 is made to count according to the gas flow.

As shown in FIGS. 3 to 5, the relay gear 23 includes first and second gear portions 28a and 28b having different diameters interposed between the drive gear 22 and the interlocking gear 24. Ribs 29a are formed in the planar portion of the relay gear 23, and a magnet 30 is attached to one of them.

In addition, a cover 31 for accommodating the counter portion 25 and closing the inside of the concave indentation groove 21 is mounted.

Both sides of the body constituting the cover 31 are provided with fixing plates 32A and a viewing window 32B, respectively, and at the inside of the bottom of the body, the holder is located at a position opposite to the magnet 30 attached to the relay gear 23. (33) is attached, and it is comprised so that the reed switch 34 may be inserted and fixed in this holder 33. As shown in FIG.

The present invention configured as described above is a conventional diaphragm installed in the lower case 13B as gas is supplied through the inlet portion 11 of one side of the upper case 13A constituting the gas meter 10 (not shown). O) to operate while causing a volume change, so that the first and second links 16A and 16B in the upper case 13A rotate repeatedly about the respective support shafts 15a and 15b.

Accordingly, the interaction between the first and second links 16A and 16B makes it possible to rotate the rotary body 17 and the movable body 18 and simultaneously rotate the operating gear 20. The rotation force by 20 causes the drive gear 22 mounted in the recessed groove 21 in the front portion of the upper case 13A to rotate.

In addition, the relay gear 23 and the interlocking gear 24 meshed with the drive gear 22 can also be rotated about the respective axes 23a and 24a, and the counter gear 24 allows the counter to rotate. The number plates 27 in the frame 26 constituting the unit 25 may be sequentially operated to count the usage amount according to the gas flow.

At the same time, as the relay gear 23 rotates, the magnet 30 mounted on the surface of the rib 29a also rotates, so that the holder 33 of the bottom surface of the magnet 30 and the cover 31 is rotated. The pulse signal can be generated by interaction with the reed switch 34 located inside the, and the meter can be remotely read as the pulse signal.

That is, when the magnet 30 rotates once by the relay gear 23 and the magnetic force by the magnet 30 approaches the reed switch 34, one pulse is generated. For example, since it can be sent immediately to the central office, uniform meter reading can be performed at a remote location.

Although the above-described embodiment is described with respect to the most preferred example of the present invention, it is not limited to the above embodiment, it is apparent to those skilled in the art that various modifications are possible without departing from the technical spirit of the present invention.

As described above, according to the pulse generating structure of the gas meter according to the present invention, the magnet is attached to the relay gear that rotates in accordance with the gas flow to operate the counter unit and pulses are provided on the cover of the corresponding position. Since the signal can be detected, the pulse signal can be measured more accurately with a simple structure without the need for a separate component.

Claims (4)

In the gas meter which is installed in the main body having the inlet and outlet, the diaphragm which operates due to the volume change according to the presence or absence of gas is counted and the gas meter can be detected remotely. In the front portion of the upper case 13A constituting the main body 14 of the gas meter 10, a recess gear 21 is formed and a relay gear 23 with a magnet 30 is provided. The cover 31 which closes the mouth groove 21 is provided with a reed switch 34 at a position corresponding to the magnet 30 so as to measure pulses. 2. The relay gear (23) according to claim 1, wherein the relay gear (23) operates the drive gear (22) and the number plates (27) of the counter section (25) which rotate by the gas pressure supplied into the main body (14) of the gas meter (10). The gas meter structure, characterized in that interposed between the interlocking gear (24). 3. The relay gear (23) according to claim 1 or 2, wherein the relay gear (23) is provided with first and second gear portions (28a, 28b) having different diameters, and the ribs (29a) formed on the plate portion thereof. The pulse generating structure of the gas meter, characterized in that the magnet 30 is mounted on any one. 4. The pulse generating structure of a gas meter according to claim 3, wherein said reed switch (34) is mounted in a holder (33) disposed inside a bottom of a body constituting a cover (31).