CN201060034Y - Standard flow quantity generators - Google Patents
Standard flow quantity generators Download PDFInfo
- Publication number
- CN201060034Y CN201060034Y CNU2007200132896U CN200720013289U CN201060034Y CN 201060034 Y CN201060034 Y CN 201060034Y CN U2007200132896 U CNU2007200132896 U CN U2007200132896U CN 200720013289 U CN200720013289 U CN 200720013289U CN 201060034 Y CN201060034 Y CN 201060034Y
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- CN
- China
- Prior art keywords
- piston
- flow generator
- normal flow
- motor
- cylindrical shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a flow detection device, in particular to a standard flow generator, which is characterized in that the bottom of a cylinder is provided with a discharging pipe connecting port, a piston is arranged inside the cylinder, the piston is connected with a drive link, and the drive link is connected with a driving device. The utility model has simple and compact structure, low cost and simple operation; a detected flow-meter is connected to the discharging pipe, when the motor rotates, the piston moves downward in a constant speed and uniformly discharges the liquid inside the cylinder; with different motor rotating speeds, the piston can produce different moving speeds, thereby producing different standard flows; the motor is powered on to give the standard flow, comparing the display value of the detected flow-meter with the standard flow value, the precision of the detected flow-meter can be detected. The utility model has high mechanical processing precision and high motor driving rotating speed control precision; however, the prior art can be realized, thereby having high measuring precision.
Description
Technical field:
The utility model relates to flow detector.
Background technology:
Current flux table calibration detection system is doted on greatly, and complex structure adopts water pump, stable-pressure device and standard scale to detect, the standard scale accuracy requirement is high especially, involves great expense, and also needs regularly to carry out the calibration of higher level again, not only cost height, and operation of equipment complexity, inefficiency.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned not enough problem, and a kind of normal flow generator is provided, the structure general regulations, and cost is low, and is easy to operate, the precision height.
The technical scheme that the utility model is adopted for achieving the above object is: the normal flow generator, and the cylindrical shell bottom has the drain pipe interface, and a piston is arranged in the cylindrical shell, and piston connects drive link, and drive link connects drive unit.
Described drive unit is for adopting motor and reducer casing, and motor connects the rotating speed control gear, motor output shaft assembling reducer casing, and reducer casing is connected with drive link.
Described piston is equipped with seal on the edge.
Described cylinder lumen is the fixed volume inner chamber, and the piston stop means is housed on the cylindrical shell, and stop means is the spacing or position transducer formula electronic limit device of mechanical type.
Described cylindrical shell bottom liquid outlet also is an inlet simultaneously.
Described cylindrical shell bottom is provided with liquid outlet and inlet.
The utility model is simple and compact for structure, cost is low, simple to operate, flowmeter to be detected is connected on the drain pipe, motor make when rotating piston at the uniform velocity move downward and discharge uniformly liquid in the cylindrical shell, just can calculate the flow value of drain pipe interface by the movement velocity of calculating piston, and the movement velocity of piston depends on rotating speed of motor.Can make the different movement velocity of piston generation produce different normal flows thereby set different motor speeds, starter motor provides normal flow, compares flowmeter displayed value to be detected and normal stream value, can detect the precision of flowmeter to be measured.The utility model machine work precision height, motor-driven rotating speed control accuracy height, but state-of-the art all can realize, so the measuring accuracy height.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model structural representation (the liquid in-out pipe separately).
Embodiment:
Normal flow generator as shown in Figure 1, cylindrical shell 4 bottoms have drain pipe interface 6, the drain pipe interface is also used as the feed tube interface simultaneously, a piston 2 is arranged in the cylindrical shell, piston tip fixedly is equipped with drive link 1, drive link connects the reducer casing 7 in the drive unit, reducer casing and the assembling of motor 8 output shafts, and motor connects the rotating speed control gear.Piston stop means 10 is housed on the cylindrical shell, stop means is the spacing or position transducer formula electronic limit device of mechanical type, mechanical limiting location device is positive stop block or fixture block and so on, guarantee that cylinder lumen 9 is an accurate fixed volume inner chamber, seal 3 is housed on the piston, guarantee when piston motion and the cylinder inboard wall face seal tight.
Normal flow generator as shown in Figure 2, basic identical with Fig. 1, just be provided with drain pipe interface 6 and feed tube interface 5 in the cylindrical shell bottom.
Can make the different movement velocity of piston generation produce different normal flows thereby set different motor speeds, starter motor provides normal flow, compares flowmeter displayed value to be detected and normal stream value, can detect the precision of flowmeter to be measured.
Claims (7)
1. the normal flow generator is characterized in that: have drain pipe interface (6) bottom the cylindrical shell (4), a piston (2) is arranged in the cylindrical shell, piston connection drive link (1), drive link connection drive unit.
2. normal flow generator according to claim 1 is characterized in that: drive unit is for adopting motor and reducer casing, and motor (8) connects the rotating speed control gear, motor output shaft assembling reducer casing (7), and reducer casing is connected with drive link (1).
3. normal flow generator according to claim 1 is characterized in that: seal (3) is housed on the piston (2).
4. normal flow generator according to claim 1 is characterized in that: cylinder lumen (9) is the fixed volume inner chamber, and piston stop means (10) is housed on the cylindrical shell.
5. normal flow generator according to claim 4 is characterized in that: stop means is mechanical limiting location device or position transducer formula electronic limit device.
6. normal flow generator according to claim 1 is characterized in that: cylindrical shell bottom drain pipe interface (6) also is the feed tube interface simultaneously.
7. normal flow generator according to claim 1 is characterized in that: the cylindrical shell bottom is provided with drain pipe interface (6) and feed tube interface (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200132896U CN201060034Y (en) | 2007-07-12 | 2007-07-12 | Standard flow quantity generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200132896U CN201060034Y (en) | 2007-07-12 | 2007-07-12 | Standard flow quantity generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060034Y true CN201060034Y (en) | 2008-05-14 |
Family
ID=39408512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200132896U Expired - Fee Related CN201060034Y (en) | 2007-07-12 | 2007-07-12 | Standard flow quantity generators |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060034Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914349A (en) * | 2012-11-08 | 2013-02-06 | 宁波东海仪表水道有限公司 | Water meter verification device and method |
-
2007
- 2007-07-12 CN CNU2007200132896U patent/CN201060034Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914349A (en) * | 2012-11-08 | 2013-02-06 | 宁波东海仪表水道有限公司 | Water meter verification device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 |