JPH035530B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an excess count meter.

Traditionally, when gas consumption exceeds the set flow rate during rate transactions with general gas consumers,
As a method to record the frequency of excess flow rate, a ventilator tube is installed in the middle of the piping, and when gas flows at a flow rate higher than the set flow rate, the diaphragm is activated by the differential pressure between the gas pressure in the ventilator tube section and the gas pressure in other parts. There is a device that detects the number of activations and measures the frequency of exceedance. In this conventional excess number meter, since the gas to be measured is passed through the device, piping work of gas pipes is required during measurement, which is troublesome.

In view of the above, an object of the present invention is to propose an excess frequency counter that can easily measure the excess frequency without requiring piping work. They are movably arranged facing each other so that the rotation of one magnet 5 causes the other magnet 10 to follow the rotation, and one magnet 5 is connected to the drive section, and the other magnet 10 is arranged such that it also rotates in the opposite direction. The present invention is characterized in that it is equipped with an over-excess counter 16 which is connected to the speed regulating mechanism 14 through the ratchet mechanisms 11 and 12 so as to be able to move forward, and is stepped only when the other magnet 10 reverses.
In the invention, these devices are incorporated in a case provided separately from a flowmeter such as a gas meter, and furthermore, the drive section of the one magnet 5 rotates in proportion to the flow velocity provided in the flowmeter such as a gas meter. A transmission magnet 3 that rotates to follow the rotation of the meter side magnet 1, facing the meter side magnet 1.
It is characterized by being composed of.

Next, embodiments of the present invention shown in the drawings will be described.

Reference numeral 1 denotes a meter-side magnet installed in a counter portion of a flowmeter such as a gas meter, which rotates in proportion to the flow rate of gas or the like. Reference numeral 2 denotes a case of an excess number meter formed separately from the gas meter, and is made of a non-magnetic material such as synthetic resin. 3
is a transmission magnet installed in the case 2, which is rotatably provided on the substrates 4a and 4b and is also provided so as to face the meter side magnet 1. Due to the magnetic force of both magnets 1 and 3, The transmission magnet 3 rotates following the rotation of the meter side magnet 1. A cylindrical outer magnet 5 is provided integrally with a magnet holder 6 rotatably provided on the substrate 4a. A gear 6a is carved on the outer periphery of the magnet holder 6, and the rotation of the transmission magnet 3 is transmitted to this via a train gear mechanism 7. Reference numerals 8 and 9 denote rotary shafts connected together, one end of which is connected to the magnet holder 6.
is rotatably supported at the center of the board 4, and the other end is connected to the board 4.
It is rotatably supported by b and 4c. Reference numeral 10 denotes an inner slip magnet fixed to the outer periphery of the rotating shaft 8, and is rotatably housed in the cylinder of the outer slip magnet 5. The outer slip magnet 5 is rotated by the magnetic force of both slip magnets 5 and 10. It is designed to rotate according to the A ratchet pawl 11 is fixed to the rotating shaft 9, and a ratchet wheel 12 is loosely fitted in a rotatable manner. As shown in FIGS. 3 and 4, the ratchet pawl 11 has leaf spring-like pawls 1 on both sides of a disc 11a.
1b, and the ratchet wheel 12 is formed by bending the cylindrical portion 1b, as shown in FIGS. 5 and 6.
A plurality of engagement teeth 12b are carved at appropriate intervals on the inner circumferential surface of the ratchet 2a, and the ratchet pawl 11 is connected to the cylindrical portion 1 of the ratchet wheel 12 by the pawl 11b.
2a, and set the ratchet claw 1
1, the pawl 11b engages with the engagement groove 12.
b to rotate the ratchet wheel 12 in the forward direction, and when rotating in the reverse direction, the pawl 11b does not engage with the engagement groove 12b and the ratchet wheel 12 rotates in the forward direction.
is designed not to rotate. Note that this forward rotation is the direction of rotation of the outer slip magnet 5. The ratchet wheel 12 is connected to a speed regulating mechanism 1 consisting of an escapement via a train gear mechanism 13.
4 is provided. The rotating shaft 9 is adapted to rotate a gear 18 loosely fitted onto a shaft 17 of an excess excess counter 16 via a train gear mechanism 15 . A ratchet pawl 19 as shown in FIGS. 7 and 8 is fixed on the side surface of the gear 18. Claw portion 19a, 1 having
9a. Reference numeral 20 denotes a ratchet wheel provided on the first digit display wheel of the excessive excess counter 16, and as shown in FIGS. It is formed. When the rotary shaft 9 rotates in the forward direction, the pawl 19a of the ratchet pawl 19 rotates in the direction of the arrow in FIG. 9 rotates in the opposite direction, the pawl 19a rotates in the opposite direction of the arrow and engages with the tooth 20a, and the ratchet wheel 20 is engaged with the ratchet pawl 19 so as to rotate integrally in the same direction.

Next, the operation will be explained.

First, remove the transmitter for the remote meter that is separably attached to the gas meter, and place the case 2 of the excess number meter of the present invention against the side of the gas meter case so that the transmission magnet 3 faces the meter-side magnet 1. attached to. When the gas to be measured is passed through in this state, the meter-side magnet 1 is rotated in the forward direction by the measuring mechanism within the gas meter, and the transmission magnet 3 is also rotated in accordance with the magnetic force. Due to this rotation, the outer slip magnet 5 rotates in the forward direction via the wheel train gear mechanism 7 and the magnet holder 6, and the inner slip magnet 10 also rotates in the forward direction following the outer slip magnet 5 due to the magnetic force. do. At this time, if the flow velocity of the gas to be measured is below the set maximum flow rate, the inner slip magnet 1
Since the rotational speed at 0 is within the allowable rotational speed range by the regulating mechanism 14, the inner slip magnet 10 follows the outer slip magnet 5 and rotates at the same speed, and there is a gap between the two slip magnets 10 and 5. No deviation occurs. When the flow velocity of the gas to be measured exceeds the set maximum flow rate, the outer slip magnet 5 rotates at a rotational speed exceeding the permissible rotational speed range of the inner slip magnet 10 by the regulating mechanism 14, and the outer slip magnet 5 rotates at a rotational speed exceeding the allowable rotational speed range of the inner slip magnet 10 by the regulating mechanism 14. Etto wheel 1
2 prevents excessive rotation in the forward direction, a shift occurs in the positions of the opposing magnetic poles of the inner and outer slip magnets 10 and 5, and this shift gradually increases.
When this deviation reaches approximately 180 degrees, the inner slip magnet 10 is moved due to the attraction action of the other magnetic poles.
180° reverse rotation, rotating shafts 8, 9, train gear mechanism 1
5. Rotate the ratchet pawl 19 in the opposite direction via the gear 18. By the reverse rotation of this ratchet pawl 19,
The pawl 19a rotates in the direction opposite to the arrow in FIG.
0a, and the first digit display wheel of the excessive excess counter 16 is incremented by one scale. Due to the above,
The amount of gas to be measured is the inner and outer slip magnet 10,5
Each time the flow rate exceeds the set flow rate by a phase of 180°, one scale can be integrated, and the excess flow rate can be calculated using this scale.

As described above, according to the present invention, the frequency of excess can be measured by associating one of the pair of magnets with a member rotated by the fluid to be measured, thereby eliminating the need for fluid piping work as in the past. First, the measurement work is convenient. Moreover, if the remote measuring meter has a transmitter equipped with a magnet that rotates in proportion to the fluid flow velocity on the meter side and a transmission magnet that rotates in accordance with the magnet on the meter side, this transmitter must be removed. Therefore, the frequency of excess can be measured simply by installing the excess excess counter of the present invention on a meter with its transmission magnet facing the meter-side magnet, so it has the advantage that it can be easily measured even with an existing meter.

In addition, although the case where it is applied to a gas meter has been described above, the excess number meter of the present invention can be applied to other totalizers such as a water meter.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an external view with the case shown as a chain line, Fig. 2 is an exploded sectional view, and Figs. 3 to 5 show a ratchet mechanism related to the speed regulating mechanism. Fig. 3 is a front view of the ratchet pawl, Fig. 4 is a side view of the same, Fig. 5 is a front view of the ratchet wheel, Fig. 6 is a sectional view of the same side, and Figs. 7 to 10. The figures show parts of the ratchet mechanism related to the over-excess counter. Figure 7 is a front view of the ratchet pawl, Figure 8 is a side view of the same, Figure 9 is a front view of the ratchet wheel, and Figure 10 is a front view of the ratchet pawl. FIG. 9 is a sectional view taken along line A-A in FIG. 9; 1...Meter side magnet, 2...Case, 3
...Transmission magnet, 5...Outer slip magnet, 6... Magnet holder, 7... Wheel train gear mechanism, 8, 9... Rotating shaft, 10... Inner slip magnet, 11... Ratchet pawl, 12... Ratchet wheel, 13... Wheel train gear mechanism, 14
...Governing mechanism, 15... Wheel train gear mechanism, 16...
Excessive counter, 17...axis, 18...gear, 1
9...Ratchet claw, 20...Ratchet wheel.

Claims (1)

[Scope of Claims] 1 A pair of magnets 5 and 10 are disposed facing each other so as to be slidable so that rotation of one magnet 5 causes the other magnet 10 to follow the rotation, and one magnet 5 is connected to the drive section. The other magnet 10 is connected to the speed regulating mechanism 14 via ratchet mechanisms 11 and 12 so that it can rotate in the opposite direction.
An excess excess counter 16 is provided with an excess excess counter 16 which is incremented only when the rotation is reversed. 2 A pair of magnets 5 and 10 are disposed facing each other so as to be slidable so that the rotation of one magnet 5 causes the other magnet 10 to follow the rotation, and one magnet 5 is connected to the drive section and the other magnet 10 is connected to the speed regulating mechanism 14 via ratchet mechanisms 11 and 12 so that it can rotate in the opposite direction, and the other magnet 10
The device is equipped with an over-excess counter 16 that is stepped only when the magnet is reversed, and these devices are built into a case that is separate from a flow meter such as a gas meter. A flowmeter comprising a transmission magnet 3 that rotates in accordance with the rotation of the meter-side magnet 1, which is opposed to a meter-side magnet 1 that rotates in proportion to the flow velocity provided in the flowmeter. Frequency meter.