CN201508211U - Optical code liquid level meter - Google Patents
Optical code liquid level meter Download PDFInfo
- Publication number
- CN201508211U CN201508211U CN2009202036159U CN200920203615U CN201508211U CN 201508211 U CN201508211 U CN 201508211U CN 2009202036159 U CN2009202036159 U CN 2009202036159U CN 200920203615 U CN200920203615 U CN 200920203615U CN 201508211 U CN201508211 U CN 201508211U
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- China
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- float
- liquid level
- roller
- magnetic coupling
- coupling device
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- Expired - Fee Related
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- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to an optical code liquid level meter which comprises a spindle, a float, a measuring cable, a main rolling wheel, an auxiliary rolling wheel, a heavy hammer, a magnetic coupling device and an photoelectric encoder; the spindle 9 is provided with the main rolling wheel 10 and the auxiliary rolling wheel 7; the magnetic coupling device 5 is arranged between the spindle and an encoder shaft 4; the spindle rotates to drive the encoder 3 to rotate through the magnetic coupling device; one end of the cable 11 is wound on the main rolling wheel 10, and the other end thereof is connected with the float 12; the cable wound on the auxiliary rolling wheel 7 is connected with the heavy hammer 13; the float goes up and down as the liquid level so that the spindle rotates; the magnetic coupling device drives the photoelectric absolute value encoder to rotate, to output digital signals; when the float is at different positions, the digital signals output by the photoelectric absolute value encoder are different, so as to measure the absolute values of the liquid level. The optical code liquid level meter has the advantages of simple structure, wide scope of application, stable performance and the liquid measurement precision of +/-1mm, is particularly applicable in the measurement of light oil, crude oil, residual oil and other media and can be networked with computers, IPC, PCL, DCS and other industrial control systems to realize tank farm group test.
Description
Technical field
The utility model relates to a kind of monitoring indicating device of indicating liquid liquid level, particularly a kind of light sign indicating number liquid level instrument.
Background technology
Known liquid level gauge has mechanical type, condenser type, ultrasound wave, radar, pressure and measuring system such as servo, this class liquid level gauge majority exist not energy measurement interface, resolution low, trouble, price height, mission life be installed deficiencies such as lack.
With the utility model correlation technique device the patent No. 200320111359.3 photoconduction liquid level gauges are arranged, mainly be to constitute by assemblies such as code-disc, measuring wheel, disc spring bull wheels, code-disc passes through optoelectronic switch, and do and be synchronized with the movement, wire rope roll is on measuring wheel, and the other end links to each other with float by fabric wheel, flange, the total journey of sealing.Between disc spring bull wheel and the disc spring steamboat disc spring is arranged, be used for regulating the balance of whole code-disc, float system.Code-disc, float system export the set of number pulse signal from an equilibrium state to another equilibrium state by optoelectronic switch like this.This liquid level gauge structure is comparatively complicated, and encoder section and rotating mechanism are together, and be difficult in maintenance; And the rotation system resistance is big, is prone to the cassette tape phenomenon.
Summary of the invention
The utility model purpose provides a kind of simple in structure, applied widely, and level gauging is accurate and resolution is high, and is convenient for installation and maintenance, long working life, light sign indicating number liquid level instrument safe in utilization.
The utility model is according to force balance principle, form output digital signal and metering system by float, metering hawser, main roller, secondary roller, weight, magnetic coupling device, photoelectricity absolute value encoder, when the variation of liquid level destroys the system force balance, the photoelectricity absolute value encoder is just exported the set of number signal, and float is in different positions, photoelectricity absolute value encoder output digital signal is also different, realizes that thus the absolute value of liquid level is measured.The technical solution adopted in the utility model is for achieving the above object: a kind of light sign indicating number liquid level instrument, comprise main shaft (9), float (12), metering hawser (11), main roller (10), secondary roller (7), weight (13), magnetic coupling device (5) and photoelectric encoder (3), it is characterized in that: main roller (10) and secondary roller (7) are housed on the main shaft (9), between main shaft (9) and the scrambler axle (4) magnetic coupling device (5) is housed, main shaft rotates and by magnetic coupling device photoelectric encoder (3) is rotated thereupon; Metering hawser (11) one ends fixedly are wrapped on the main roller (10), and the other end connects float (12); The hawser that fixedly is wrapped on the secondary roller (7) connects weight (13), and the hawser on the float and weight hawser (14) are distributed in the main shaft both sides, makes the gravity of float and liquid difference and the weight gravity formation dynamic balance to its buoyancy.
-described main roller (10) circumference has V-shaped groove (16), and metering hawser (11) is wrapped in the V-shaped groove, is wound with pinch roller (8) at the rope of locating by main roller (10) (11).
-described secondary roller diameter can be provided with V-shaped groove (16) less than the main roller diameter on the secondary roller circumference.
The longitudinal profile profile of the float (12) of-described connection cable (11) is oval.
The utility model beneficial effect is: simple in structure, and applied range; Stable performance, the accurate resolution height of level gauging, level gauging precision ± 1mm; Convenient for installation and maintenance, long working life, safe and reliable, be particularly useful for the measurement of media such as lightweight oil, crude oil, wax oil, residual oil, and can network with industrial control systems such as computing machine, industrial computer, PCL, DCS, realize that the tank field group surveys.
Description of drawings
Now the utility model is described in further detail with embodiment in conjunction with the accompanying drawings.
Accompanying drawing is the utility model structural representation.
In the accompanying drawing: 1 photoelectricity absolute value encoder output signal cable, 2 connection terminals, 3 photoelectric encoders, 4 photoelectricity absolute value encoder axles, 5 magnetic coupling devices, 6 magnetic sheets, 7 secondary rollers, 8 pinch rollers, 9 main shafts, 10 main rollers, 11 metering hawsers, 12 floats, 13 weights, 14 weight hawsers, 15 fixed heads, 16V shape groove.
Embodiment
Referring to accompanying drawing, main shaft 9 is connected with photoelectric encoder 3 by the magnetic coupling device 5 that has magnetic sheet 6, output signal cable 1 is connected with connection terminal 2, connection terminal 2 is fixed on the fixed head 15 of main shaft one side with photoelectric encoder 3, between main shaft 9 and the photoelectricity absolute value encoder axle 4 is the magnetic coupling kind of drive, and main roller 10, secondary roller 7, photoelectricity absolute value encoder are done to rotate synchronously by magnetic coupling device 5.Main roller 10 and secondary roller 7 are housed on the main shaft 9, have V-shaped groove 16 at main roller 10 circumference, for preventing the hawser job-hopping, make metering hawser 11 uniform winding in the triangular thread groove of roller periphery, be wound with pinch roller 8 at metering hawser 11, hawser be pressed in main roller 10 V-shaped groove 16 on every side by pinch roller 8 and main roller 10 by main roller 10 places.Metering wire rope one end is fixed on the main roller 10, the other end is fixed on the float 12, hawser on the float and weight hawser 14 are distributed in main shaft 9 both sides, make the gravity of float and the gravity of weight form reciprocity law power, and the longitudinal profile profile of float is designed to ellipse; Also be provided with V-shaped groove 16 on the circumference of secondary roller 7 on the main shaft 9, be wound with weight hawser 14 in the triangular thread groove on the secondary roller 7, an end of rope 14 is fixed on the secondary roller 7, and the other end is connected with weight 13; The secondary roller diameter is less than the main roller diameter, to reduce the weight stroke.The gravity of float 12 and liquid form positive moment to its buoyancy difference on main shaft 9, the gravity of weight 13 forms counter torque, and two moments reach balance.Float 12 rotates main shaft with liquid surface lifting during work, by magnetic coupling device photoelectricity absolute value encoder axle is rotated thereupon, the output digital signal, float is in diverse location, the digital signal of photoelectricity absolute value encoder output is also different, finally realizes the measurement of liquid level absolute value.
Claims (4)
1. light sign indicating number liquid level instrument, comprise main shaft (9), float (12), metering hawser (11), main roller (10), secondary roller (7), weight (13), magnetic coupling device (5) and photoelectric encoder (3), it is characterized in that: main roller (10) and secondary roller (7) are housed on the main shaft (9), between main shaft (9) and the scrambler axle (4) magnetic coupling device (5) is housed, main shaft rotates and by magnetic coupling device photoelectric encoder (3) is rotated thereupon; Metering hawser (11) one ends fixedly are wrapped on the main roller (10), and the other end connects float (12); The hawser that fixedly is wrapped on the secondary roller (7) connects weight (13), and the hawser on the float and weight hawser (14) are distributed in the main shaft both sides, makes the gravity of float and liquid difference and the weight gravity formation dynamic balance to its buoyancy.
2. according to the described light sign indicating number of claim 1 liquid level instrument, it is characterized in that main roller (10) circumference has triangular thread groove (16), metering hawser (11) is wrapped in the V-shaped groove, is wound with pinch roller (8) at the rope of locating by main roller (10) (11).
3. according to claim 1 or 2 described light sign indicating number liquid level instrument, it is characterized in that the secondary roller diameter less than the main roller diameter, the secondary roller circumference is provided with triangular thread groove (16).
4. according to the described light sign indicating number of claim 1 liquid level instrument, the longitudinal profile profile that it is characterized in that described float (12) is for oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202036159U CN201508211U (en) | 2009-09-23 | 2009-09-23 | Optical code liquid level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202036159U CN201508211U (en) | 2009-09-23 | 2009-09-23 | Optical code liquid level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201508211U true CN201508211U (en) | 2010-06-16 |
Family
ID=42469338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202036159U Expired - Fee Related CN201508211U (en) | 2009-09-23 | 2009-09-23 | Optical code liquid level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201508211U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382968A (en) * | 2016-11-11 | 2017-02-08 | 中国矿业大学(北京) | Real-time tracking and measuring device for underground water level |
| WO2023272879A1 (en) * | 2021-06-28 | 2023-01-05 | 中冶赛迪工程技术股份有限公司 | Lightning-protection mechanical internal capacity indicator for storage tank |
-
2009
- 2009-09-23 CN CN2009202036159U patent/CN201508211U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382968A (en) * | 2016-11-11 | 2017-02-08 | 中国矿业大学(北京) | Real-time tracking and measuring device for underground water level |
| CN106382968B (en) * | 2016-11-11 | 2018-01-26 | 中国矿业大学(北京) | Level of ground water real-time follow-up device |
| WO2023272879A1 (en) * | 2021-06-28 | 2023-01-05 | 中冶赛迪工程技术股份有限公司 | Lightning-protection mechanical internal capacity indicator for storage tank |
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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: 20100616 Termination date: 20140923 |
|
| EXPY | Termination of patent right or utility model |