Counter for monitoring flow
阅读说明：本技术 一种监测流量的计数器 (Counter for monitoring flow ) 是由 李国国 符子建 董胜龙 籍慧琴 陈烊伊 于 2018-07-17 设计创作，主要内容包括：本发明公开了一种监测流量的计数器,该装置包括：计数器架、字轮组、微磁铁块、传动齿轮组和机电转换器；微磁铁块固定于传动齿轮组上,随之转动；传动齿轮组与字轮组啮合；计数器架上与微磁铁块对应的位置固定与该微磁铁块磁耦合的机电转换器。本发明在高速转动的传动齿轮上增加采样装置,保证即使计量装置在低速运转时,也会有高频次的流量采集信号输出,从而能够实现对流速信号的实时采集。(The invention discloses a counter for monitoring flow, comprising: the device comprises a counter frame, a word wheel set, a micro magnet block, a transmission gear set and an electromechanical converter; the micro magnet block is fixed on the transmission gear set and rotates along with the transmission gear set; the transmission gear set is meshed with the character wheel set; and the position of the counter rack corresponding to the micro magnet block is fixed with an electromechanical converter magnetically coupled with the micro magnet block. According to the invention, the sampling device is added on the transmission gear rotating at a high speed, so that the high-frequency flow acquisition signal is output even when the metering device runs at a low speed, and the real-time acquisition of the flow speed signal can be realized.)
1. A counter to monitor flow, comprising: counter frame and character wheel group, its characterized in that, the device includes: the micro-magnet block, the transmission gear set and the electromechanical converter; the micro magnet block is fixed on the transmission gear set; the transmission gear set is meshed with the character wheel set; and the position of the counter rack corresponding to the micro magnet block is fixed with an electromechanical converter magnetically coupled with the micro magnet block.
2. The flow monitoring counter of claim 1, wherein said drive gear set comprises a duplicate gear comprised of a duplicate first gear and a duplicate second gear; the micro-magnet block is fixed on the duplex first gear; the duplex second gear is meshed with the character wheel set.
3. The flow monitoring counter of claim 2, wherein the diameter of the duplex first gear is greater than the diameter of the duplex second gear; the number of teeth of the duplex first gear is larger than that of the duplex second gear.
4. The flow monitoring counter of claim 2, wherein the electromechanical transducer is disposed below the first dual gear half adjacent the word wheel set and parallel to the word wheel set.
5. The flow monitoring counter of claim 2, wherein the electromechanical converter is disposed below the duplicate first gear not adjacent to the half of the print wheel set and parallel to the print wheel set.
6. The flow monitoring counter of claim 2, wherein the electromechanical transducer is disposed directly below the duplicate first gear and parallel to the duplicate first gear.
7. The flow rate monitoring counter of claim 2, wherein a duplicate second gear is engaged with the first character wheel of the character wheel set for driving the first character wheel to rotate.
8. The flow monitoring counter of claim 7, further comprising a slave wheel set, the slave wheel set engaging a head wheel, a red wheel, and a black wheel of the word wheel set.
9. The flow meter according to claim 1, wherein the back of the counter holder is provided with a locking groove, and the electromechanical transducer is provided with a locking clip adapted to the locking groove of the counter holder.
10. A flow monitoring counter according to any one of claims 1 to 9 in which the electromechanical transducer is a reed switch or a hall device.
Technical Field
The invention relates to the technical field of electrical elements, in particular to a counter for monitoring flow.
Background
The metering device of the equal-volume metering principle of the diaphragm gas meter is driven to run by a metered substance such as gas, water and the like, and transmits the rotation to a mechanical character wheel counter. The metering of the material to be measured is achieved by calibration, i.e. rotating the mechanical counter by one unit for each unit of material to be measured that is moved through the metering device. After metering is completed, in order to realize the intellectualization of the metering device, electromechanical conversion is needed, mechanical metering information is converted into electronic information through modes such as pulse sampling, photoelectric direct reading and the like, and therefore the intellectualized management of the metering device is realized.
At present, there is a method or device that adds pulse sampling to the lowest bit of a mechanical counter, that is, each time the lowest bit of the mechanical counter makes one turn, a pulse signal is generated to realize electromechanical conversion and collection of flow rate.
However, the method of adding the pulse sample to the lowest position of the mechanical counter has a disadvantage of slow response speed, because the time required for the last position of the mechanical counter to make one turn is relatively long, and especially in the minimum range of the measuring range of the metering device, the time required for one turn can be hours or even days, and the flow rate acquisition becomes inaccurate or even meaningless. Therefore, the existing intelligent metering device adopting the volume type principle cannot output real-time flow rate information, so that the functions of the metering device, such as intelligence degree, safety degree and the like, are not perfect.
Disclosure of Invention
The embodiment of the invention provides a flow monitoring counter, wherein a sampling device is added on a transmission gear rotating at a high speed, so that high-frequency flow acquisition signals are output even when a metering device runs at a low speed, and real-time acquisition of flow speed signals can be realized.
The embodiment of the invention provides a counter for monitoring flow, which comprises: the device comprises a counter frame, a word wheel set, a micro magnet block, a transmission gear set and an electromechanical converter; the micro magnet block is fixed on the transmission gear set and rotates along with the transmission gear set; the transmission gear set is meshed with the character wheel set; and the position of the counter rack corresponding to the micro magnet block is fixed with an electromechanical converter magnetically coupled with the micro magnet block.
Preferably, the transmission gear set comprises a duplicate gear, and the duplicate gear consists of a duplicate first gear and a duplicate second gear; the micro-magnet block is fixed on the duplex first gear; the duplex second gear is meshed with the character wheel set.
Preferably, the diameter of the duplex first gear is larger than that of the duplex second gear; the number of teeth of the duplex first gear is larger than that of the duplex second gear.
Preferably, the electromechanical converter is arranged below the duplex first gear close to the half side of the character wheel set and parallel to the character wheel set.
Preferably, the electromechanical converter is disposed below the duplicate first gear not near the half side of the character wheel set and parallel to the character wheel set.
Preferably, the electromechanical converter is disposed directly below the duplex first gear and parallel to the duplex first gear.
Preferably, the duplex second gear is meshed with the first character wheel in the character wheel set and is used for driving the first character wheel to rotate.
Preferably, the counter further comprises a driven wheel set, and the driven wheel set is engaged with a head wheel, a red wheel and a black wheel in the word wheel set.
Preferably, the back of the counter frame is provided with a clamping groove, and the electromechanical converter is provided with a buckle matched with the clamping groove on the counter frame.
Preferably, the electromechanical converter is a reed switch or a hall device.
Compared with the prior art, the invention has at least the following beneficial effects:
the sampling device is added on the transmission gear rotating at a high speed, so that the high-frequency flow acquisition signal output is ensured even if the metering device operates at a low speed, the flow velocity signal can be acquired in real time, and the problems of poor real-time performance and inaccuracy of the flow velocity acquisition of the conventional counter are effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a counter for monitoring traffic according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the position relationship between a transmission gear with a micro-magnet block fixed thereon and an electromechanical transducer according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the position relationship between a transmission gear with a micro-magnet block fixed thereon and an electromechanical transducer according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a position relationship between a transmission gear with a micro-magnet block fixed thereon and an electromechanical converter according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
It is to be understood that the following detailed description of the embodiments of the present invention, provided in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Thus, the described embodiments are a subset of the inventions and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
As shown in fig. 1, fig. 2, fig. 3, and fig. 4, an embodiment of the present invention provides a counter for monitoring a flow rate, including: the counter comprises a counter frame 1, a character wheel group 2, a
In the embodiment, the
In one embodiment of the invention, the transmission gear set 4 comprises a duplicate gear, and the duplicate gear consists of a duplicate first gear 41 and a duplicate second gear 42; the
In the embodiment, two coaxial gears which are spaced at a certain distance in the duplicate gear are meshed with other gears to achieve the purpose of speed regulation.
In one embodiment of the present invention, the diameter of the duplex first gear 41 is larger than the diameter of the duplex second gear 42; the number of teeth of the duplex first gear 41 is larger than that of the duplex second gear 42.
In this embodiment, transmission gear group is for the speed reduction design, makes the count table noise less more steady when operation. When necessary, a reduction gear can be additionally arranged in the transmission gear set, so that various speed regulation schemes can be designed.
In one embodiment of the present invention, the
In the embodiment, the electromechanical converter performs signal acquisition once every time the transmission gear rotates for one circle, so that the signal acquisition frequency is greatly improved, and the problem that the acquisition of the flow speed is inaccurate due to the fact that the first character in the mechanical counter rotates for one circle is effectively solved. The electromechanical converter can be arranged at other positions as long as the transmission gear does not rotate for one circle and at least needs to be magnetically coupled with the electromechanical converter for one time.
In one embodiment of the present invention, the
In the embodiment, the electromechanical converter performs secondary signal acquisition every time the transmission gear rotates for one turn, so that the signal acquisition frequency is further improved, and the problem that the acquisition of the flow speed is inaccurate due to the fact that the time required for the first character in the mechanical counter to rotate for one turn is longer is solved more effectively, so that the real-time performance and the accuracy can be ensured.
In one embodiment of the present invention, the duplex second gear 42 is engaged with the first character wheel 21 in the character wheel set 2 for driving the first character wheel 21 to rotate. The counter also comprises a driven wheel group 6, and the driven wheel group 6 is engaged with the first character wheel 21, the red character wheel 22 and the black character wheel 23 in the character wheel group 2.
In this embodiment, the number of teeth of the word wheel set is 10, each tooth corresponds to one counting unit, that is, ten metering units are equidistantly arranged on each first word wheel, red word wheel and black word wheel, and are sequentially
In one embodiment of the invention, the back of the counter frame is provided with a clamping groove, and the electromechanical converter is provided with a buckle matched with the clamping groove on the counter frame.
In this embodiment, the electromechanical converter, and the necessary circuit board and wires, are combined into an electromechanical converter box having a snap fit that fits into a slot in the counter holder. The electromechanical converter is arranged on the counter frame in a mode of combining the buckle and the clamping groove instead of a mode of fixing screws, so that the mounting efficiency is improved, magnetic field interference of the screws on the electromechanical converter is effectively avoided, and data acquisition errors are reduced. In practical cases, the number of the card slots and the number of the buckles can be adjusted according to the requirements of practical cases, for example, the numbers of the buckles and the card slots can be 1, 2, 3, 4, and the like.
In one embodiment of the invention, the electromechanical converter is a reed switch or a hall device.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, but are only used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed connections, removable connections, or integrally connected; either mechanically or electrically: can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two elements. Specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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