CN203287394U - A pointer flow velocity measuring instrument - Google Patents
A pointer flow velocity measuring instrument Download PDFInfo
- Publication number
- CN203287394U CN203287394U CN2013203363915U CN201320336391U CN203287394U CN 203287394 U CN203287394 U CN 203287394U CN 2013203363915 U CN2013203363915 U CN 2013203363915U CN 201320336391 U CN201320336391 U CN 201320336391U CN 203287394 U CN203287394 U CN 203287394U
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- flow velocity
- pointer
- metal bar
- support
- sliding metal
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Abstract
Provided is a pointer flow velocity measuring instrument which is used for disposed on an open channel in order to measure flow velocity of the water in the open channel. The pointer flow velocity measuring instrument comprises a support, a pendulum pointer, an arc resistor, a slide metallic rod, a pivotal connection portion, a sensitive ammeter, a flow velocity display apparatus, and a DC power supply. A series circuit is formed by the arc resistor, the slide metallic rod, the sensitive ammeter, and the DC power supply. The pivotal connection portion and the arc resistor are fixed on the support. The pivotal connection portion, one end of the pendulum pointer, and one end of the slide metallic rod are fixedly connected in order that the pendulum pointer is relatively fixed on the slide metallic rod. The slide metallic rod also contacts an arc surface of the arc resistor and is capable of sliding along the arc surface in order to change the resistance value of the series circuit. Flow velocity scale values are disposed on the flow velocity display apparatus. The sensitive ammeter is disposed in the flow velocity display apparatus. The rotating path of the pointer of the sensitive ammeter corresponds to an area formed by the flow velocity scale values.
Description
Technical field
The utility model relates to field of measuring technique, particularly a kind of pointer current knotmeter.
Background technology
China is a large agricultural country, and agricultural concerns the people's livelihood.The prosperity of agricultural is that water is whether sufficient and whether water is irrigated.For example, reasonably arrange the irrigation scheme of this area according to the water yield in a certain area, the water yield of as seen understanding an area is the important prerequisite of agriculture Rational Irrigation, and is general, and the water yield is to determine by the flow velocity of apparatus measures water and flow.
Yet the instrument due to the flow velocity of measuring irrigation water and flow is more expensive at present,, if the instrument of above-mentioned velocity measurement is installed at open channel, can increase cost.Be in cost consideration, generally can the instrument of described velocity measurement be installed in open channel in reality, so cause monitoring the water yield in open channel, and then can not reasonably arrange the irrigation scheme of this area.
Summary of the invention
In view of this, be necessary to provide a kind of low cost of manufacture and wieldy pointer current knotmeter.
a kind of pointer velocity measurement instrument, this pointer-type current knotmeter is used for being arranged on open channel, to measure the flow velocity of water in open channel, this pointer velocity measurement instrument comprises support, balancing point, arc resistance, the sliding metal bar, the pivotable connecting portion, sensitive ammeter, flow velocity display device and direct supply, arc resistance, the sliding metal bar, sensitive ammeter and direct supply form series circuit, wherein, pivotable connecting portion and arc resistance are fixed on support, one end of pivotable connecting portion and balancing point, one end of sliding metal bar is fixedly connected with so that balancing point is relative with the sliding metal bar fixing, the sliding metal bar also contacts with the arcwall face of arc resistance, and the sliding metal bar can slide to change resistance in series circuit along arcwall face, be provided with the flow velocity scale value on the flow velocity display device, sensitive ammeter is arranged in the flow velocity display device, and the rotation path of the pointer of sensitive ammeter and flow velocity scale value form regional corresponding.
Preferably, this pointer-type current knotmeter also comprises actuating switch, and actuating switch is connected on arc resistance, sliding metal bar, sensitive ammeter and direct supply and forms in series circuit.
Preferably, support comprises the first herringbone support, the second herringbone support, the pivotable connecting portion is rotating shaft, the first herringbone support, the second herringbone support be arranged in parallel, corresponding relative fixing with the first herringbone support, the second herringbone support in the two ends of rotating shaft, and rotating shaft and the first herringbone support, the second herringbone support can relatively rotate, and an end of balancing point and rotating shaft be vertical to be fixedly connected with, an end of sliding metal bar is fixedly connected with rotating shaft is vertical, and arc resistance is fixed on the first herringbone support.
above-mentioned pointer velocity measurement instrument, utilize arc resistance, sliding metal bar, sensitive ammeter and direct supply to form series circuit, and pivotable connecting portion and arc resistance are fixed on support, the pivotable connecting portion is fixedly connected with so that balancing point is relative with the sliding metal bar fixing with an end of balancing point, an end of sliding metal bar, the sliding metal bar also contacts with the arcwall face of arc resistance, and the sliding metal bar can slide to change resistance in series circuit along arcwall face, be provided with the flow velocity scale value on the flow velocity display device, sensitive ammeter is arranged in the flow velocity display device, and the rotation path of the pointer of sensitive ammeter is regional corresponding with flow velocity scale value formation, so the impulsive force of current swings balancing point, balancing point drives the sliding metal bar and slide to change the size of the electric current in series circuit on arc resistance, flow velocity scale value on the flow velocity display device is to test and draw by the flow velocity relation of electric current and water, so by the water in system of Himdu logic canal, make the rear current value that obtains of electric current change in series circuit come corresponding with the flow velocity scale value on the flow velocity display device, determine the flow velocity of the water in open channel with this, and then calculate the water yield in open channel, as seen above-mentioned pointer velocity measurement instrument low cost of manufacture and be easy to use.
Description of drawings
Fig. 1 is the structural representation of the pointer velocity measurement instrument of a preferred embodiments.
Fig. 2 is the circuit diagram of Fig. 1 pointer velocity measurement instrument.
Fig. 3 is the structural representation of another angle of Fig. 1 pointer velocity measurement instrument.
In figure: pointer velocity measurement instrument 10, support 11, the first herringbone support 111, the second herringbone support 112, balancing point 12, arc resistance 13, sliding metal bar 14, pivotable connecting portion 15, sensitive ammeter 16, flow velocity display device 17, direct supply 18, actuating switch 19, open channel 20.
Embodiment
The pointer current knotmeter that the utility model provides is to have the principle of impulsive force and the electrical principle design of series circuit forms by current, also soon can embody the impulsive force of water of flow velocity of current and the resistance value in series circuit and current value and set up mapping relations, reflect the flow velocity of current by current value.
This pointer-type current knotmeter 10 is used for being arranged on open channel 20, to measure the flow velocity of water in open channel 20.please refer to Fig. 1 to Fig. 3, pointer velocity measurement instrument 10 comprises support 11, balancing point 12, arc resistance 13, sliding metal bar 14, pivotable connecting portion 15, sensitive ammeter 16, flow velocity display device 17 and direct supply 18, arc resistance 13, sliding metal bar 14, sensitive ammeter 16 and direct supply 18 form series circuit, wherein, pivotable connecting portion 15 and arc resistance 13 are fixed on support 11, one end of pivotable connecting portion 15 and balancing point 12, one end of sliding metal bar 14 is fixedly connected with so that balancing point 12 is relative with sliding metal bar 14 fixing, sliding metal bar 14 also contacts with the arcwall face of arc resistance 13, and sliding metal bar 14 can slide to change resistance in series circuit along arcwall face, be provided with the flow velocity scale value on flow velocity display device 17, sensitive ammeter 16 is arranged in flow velocity display device 17, and the rotation path of the pointer of sensitive ammeter 16 and flow velocity scale value form regional corresponding.Wherein, the flow velocity scale value on flow velocity display device 17 is to test and draw by the flow velocity relation of electric current and water.Wherein, the density of the material of making balancing point 12 is corresponding with the density of water, guarantees that so balancing point 12 can play certain angle at the effect bottom of water velocity, but can not swim in fully on the water surface; Slide rheostat of arc resistance 13 and sliding metal bar 14 actual formations.
In the present embodiment, this pointer-type current knotmeter 10 also comprises actuating switch 19, actuating switch 19 is connected on arc resistance 13, sliding metal bar 14, sensitive ammeter 16 and direct supply 18 and forms in series circuit, is used for controlling conducting and the disconnection of described series circuit.
Further, support 11 comprises the first herringbone support 111, the second herringbone support 112, pivotable connecting portion 15 is rotating shaft, the first herringbone support 111, the second herringbone support 112 be arranged in parallel, corresponding relative fixing with the first herringbone support 111, the second herringbone support 112 in the two ends of rotating shaft, and rotating shaft and the first herringbone support 111, the second herringbone support 112 can relatively rotate, one end of balancing point 12 and rotating shaft be vertical to be fixedly connected with, an end of sliding metal bar 14 is fixedly connected with rotating shaft is vertical, and arc resistance 13 is fixed on the first herringbone support 111.
above-mentioned pointer velocity measurement instrument 10, utilize conventional arc resistance 13, sliding metal bar 14, sensitive ammeter 16 and direct supply 18 to form series circuit, and pivotable connecting portion 15 and arc resistance 13 are fixed on support 11, pivotable connecting portion 15 is fixedly connected with so that balancing point 12 is relative with sliding metal bar 14 fixing with an end of balancing point 12, an end of sliding metal bar 14, sliding metal bar 14 also contacts with the arcwall face of arc resistance 13, and sliding metal bar 14 can slide to change resistance in series circuit along arcwall face, be provided with the flow velocity scale value on flow velocity display device 17, sensitive ammeter is arranged in flow velocity display device 17, and the rotation path of the pointer of sensitive ammeter 16 is regional corresponding with flow velocity scale value formation, so the impulsive force of current swings balancing point 12, balancing point 12 drives sliding metal bar 14 and slide to change the size of the electric current in series circuit on arc resistance 13, the current value that electric current in series circuit is changed determine by the water in open channel 20 and the flow velocity scale value on the flow velocity display device, determine the flow velocity of the water in open channel 20, and then calculate the water yield in open channel 20, as seen above-mentioned pointer velocity measurement instrument 10 low cost of manufactures and be easy to use.
Claims (3)
1. pointer current knotmeter, this pointer-type current knotmeter is used for being arranged on open channel, to measure the flow velocity of water in open channel, it is characterized in that: this pointer-type current knotmeter comprises support, balancing point, arc resistance, the sliding metal bar, the pivotable connecting portion, sensitive ammeter, flow velocity display device and direct supply, arc resistance, the sliding metal bar, sensitive ammeter and direct supply form series circuit, wherein, pivotable connecting portion and arc resistance are fixed on support, one end of pivotable connecting portion and balancing point, one end of sliding metal bar is fixedly connected with so that balancing point is relative with the sliding metal bar fixing, the sliding metal bar also contacts with the arcwall face of arc resistance, and the sliding metal bar can slide to change resistance in series circuit along arcwall face, be provided with the flow velocity scale value on the flow velocity display device, sensitive ammeter is arranged in the flow velocity display device, and the rotation path of the pointer of sensitive ammeter and flow velocity scale value form regional corresponding.
2. pointer current knotmeter according to claim 1, it is characterized in that: this pointer-type current knotmeter also comprises actuating switch, actuating switch is connected on arc resistance, sliding metal bar, sensitive ammeter and direct supply and forms in series circuit.
3. pointer current knotmeter according to claim 1, it is characterized in that: support comprises the first herringbone support, the second herringbone support, the pivotable connecting portion is rotating shaft, the first herringbone support, the second herringbone support be arranged in parallel, corresponding relative fixing with the first herringbone support, the second herringbone support in the two ends of rotating shaft, and rotating shaft and the first herringbone support, the second herringbone support can relatively rotate, one end of balancing point and rotating shaft be vertical to be fixedly connected with, an end of sliding metal bar is fixedly connected with rotating shaft is vertical, and arc resistance is fixed on the first herringbone support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203363915U CN203287394U (en) | 2013-06-13 | 2013-06-13 | A pointer flow velocity measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203363915U CN203287394U (en) | 2013-06-13 | 2013-06-13 | A pointer flow velocity measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203287394U true CN203287394U (en) | 2013-11-13 |
Family
ID=49543750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203363915U Expired - Fee Related CN203287394U (en) | 2013-06-13 | 2013-06-13 | A pointer flow velocity measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203287394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730281A (en) * | 2013-12-20 | 2015-06-24 | 王世华 | Water flow speed measuring instrument |
-
2013
- 2013-06-13 CN CN2013203363915U patent/CN203287394U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730281A (en) * | 2013-12-20 | 2015-06-24 | 王世华 | Water flow speed measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20150613 |
|
| EXPY | Termination of patent right or utility model |