CN108344474A - A kind of liquid level gauge automatic calibrator - Google Patents
A kind of liquid level gauge automatic calibrator Download PDFInfo
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- CN108344474A CN108344474A CN201810285649.0A CN201810285649A CN108344474A CN 108344474 A CN108344474 A CN 108344474A CN 201810285649 A CN201810285649 A CN 201810285649A CN 108344474 A CN108344474 A CN 108344474A
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- liquid level
- water tank
- level gauge
- water
- upper cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention discloses a kind of liquid level gauge automatic calibrators, include the upper cover being fixedly connected by several columns and pedestal, it is slided in the space that several columns surround and is equipped with a water tank moved up and down, the outside of column is provided with glass tube by being fixed on the base pedestal, and the bottom end of glass tube is connected to by delivery hose with water tank bottom；The water tank is provided with the discharge mouth of a river, and the discharge mouth of a river is additionally provided with liquid level sensor by waiting for that the water supply hose of water pump is connected to water source in water tank；The lower face of the upper cover is equipped with laser range finder, and the side of upper cover is equipped with interface, control cabinet is provided on the top end face of upper cover；The signal input part of the control cabinet is separately connected the output end of liquid level sensor and laser range finder, the controlled end of the signal output end connection water pump of control cabinet.The present invention can realize automatic calibration process, improve work efficiency, and overcome influence of the water-level fluctuation to testing result in detection process, improve the accuracy of calibrating.
Description
Technical field
The present invention relates to instrument and meter Calibration Technology field, especially a kind of devices for examining and determine liquid level gauge.
Background technology
In the various rows such as petroleum-based energy, the observation of the rivers hydrology and monitoring, medical chemical industry, metallurgical manufacture, water process and supply
Industry, especially petroleum chemical industry and carrier, in the storage and transportation and trade for carrying out oil and product oil, liquid chemical product etc.
The measurement work of liquid level can be all related to when handing-over, the measurement work of liquid level is carried out using liquid level gauge mostly.Using liquid level gauge
Carry out level gauging when, according to whether needed in measurement process with measurement medium be in contact, measurement method is divided into contact type measurement
Method and contactless measurement also differ the measuring principle and structure of the corresponding liquid level gauge of different measurement methods.But
Either which kind of liquid level gauge, the measurement instrument as compulsory verification, it is necessary to could be used to measure after assay approval.
Initial liquid level gauge detection method is the hand-dipping method of non-automated, and hand-dipping method is that liquid level earlier occur
Measurement method, by artificially being measured to liquid level using the metric system steel tape of weight or with graduated scale, then with liquid
Position meter reading directly relatively, to liquid level gauge carries out calibrating, the evaluation of metering performance.But this artificial calibrating mode, due to
The presence of human error will necessarily influence the accuracy of verification result.
With the development of industry, automated control technology is more and more ripe, the existing apparatus body for examining and determine liquid level gauge
The strong feature of objectivity is revealed, namely by changing measurement liquid level automatically, while using standard set-up and liquid level gauge to be examined and determine
The result of measurement is compared, to judge the performance of liquid level gauge to be examined and determine.Such liquid level meter detecting device and method mostly use
Liquid level gauge remains stationary as, manually into drain change liquid level number and reading, measures the actual liquid level of standard set-up, tested liquid level gauge
The mode that value is compared is examined and determine, such as a kind of water tank type multifunctional solution disclosed in Chinese patent CN20141018641.1
Position meter automatic calibrator；Although overcoming caused by human error, accurately deviation, the liquid level in water tank are occurring
During change, the time needed for water inlet, draining and liquid level stabilizing is longer, and the reproduction of liquid level standard value is less reproducible, operation
Complexity, calibrating efficiency are low, it is difficult to meet the requirement of liquid level gauge calibrating；Especially when liquid level is more than 2m, the simulation of use
The method that liquid level replaces true liquid level does not consider true liquid level and simulates influence of the liquid level to liquid level gauge measurement performance, increases
The uncertainty of liquid level gauge level gauging and verification result is added.
Invention content
The technical problem to be solved in the invention is to provide a kind of liquid level gauge automatic gauge calibrating installation, for realizing liquid level
The automatic Verification of meter, the metering performance index to treat calibrating liquid level gauge make more preferable evaluation, it is whether qualified to liquid level gauge into
Row effectively confirms.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of liquid level gauge automatic calibrator, including be arranged in parallel up and down and the upper cover that is fixedly connected by several columns and
Pedestal slides in the space that a plurality of uprights surround and is equipped with a water tank moved up and down, and the outside of column is by being fixed on bottom
Seat upper pedestal is provided with glass tube straight up, and the bottom end of glass tube is connected to by delivery hose with water tank bottom；The water
Case is provided with the discharge mouth of a river, and the discharge mouth of a river is additionally provided in water tank for surveying by waiting for that the water supply hose of water pump is connected to water source
The liquid level sensor of water level in water-masuring box；The lower face of the upper cover is equipped with the laser of measure water bottom face height value
The side of rangefinder, upper cover is equipped with and the interface of liquid level gauge to be examined and determine connection, and coordination water tank is provided on the top end face of upper cover
It moves up and down, water tank plumbing and judge the whether qualified control cabinet of liquid level gauge to be examined and determine；The signal of the control cabinet inputs
End is separately connected the output end of liquid level sensor and laser range finder, the controlled end of the signal output end connection water pump of control cabinet.
A kind of above-mentioned liquid level gauge automatic calibrator, the water tank are real by the elevating mechanism being arranged in upper cover and pedestal
Now move up and down；The elevating mechanism includes the leading screw for being parallel to glass tube setting, it is equipped with threads of lead screw to be arranged on water tank
Feed screw nut and driving leading screw action servo motor；The lower end rotation of the leading screw is mounted on the base, leading screw
Upper end pass through after upper cover with the servo motor axis connection that is installed on the upper cover；The controlled end connection control cabinet of the servo motor
Signal output end.
A kind of above-mentioned liquid level gauge automatic calibrator is provided with several glass being mutually parallel on the pedestal of the column periphery
The pedestal of glass pipe, installation glass tube bottom end is provided with the inner cavity being connected to glass tube, and equipped water outlet is offered on the side wall of pedestal
The through-hole of hose bottom end.
A kind of above-mentioned liquid level gauge automatic calibrator, the bottom end of the column are also equipped with bump joint, bump joint
One end is connected to by delivery hose with water tank, and the other end is connected to by crossover sub with liquid level gauge to be examined and determine.
A kind of above-mentioned liquid level gauge automatic calibrator is additionally provided with the first temperature for detecting water temperature in the water tank and passes
Sensor, is equipped with the second temperature sensor for detecting room temperature on column, the output end of two temperatures sensor respectively with control
The signal input part of case connects.
A kind of above-mentioned liquid level gauge automatic calibrator is additionally provided with the display for showing verification result on the control cabinet
Screen.
As a result of above technical scheme, the invention technological progress is as follows.
The present invention without testing person for when examining and determine liquid level gauge, in addition to installing liquid level gauge to be examined and determine, excessively doing
It is pre- to can be completely achieved automatic calibration process, it improves work efficiency；It can be made with the glass tube of water level with water tank by setting
Liquid level smooth change in glass tube overcomes influence of the water-level fluctuation to testing result in detection process, improves detection
Accuracy, the metering performance index to treat calibrating liquid level gauge make more preferable evaluation, whether qualification progress is effectively true to liquid level gauge
Recognize and provides reliable guarantee.
The present invention, which can change the liquid level of forward and reverse stroke by laser range finder, to be accurately controlled, and control accuracy reaches
1mm, and speed is fast；By the setting of liquid level sensor and control cabinet in water pump, water tank, it can be achieved that the automatic feeding water of water tank
And draining, water consumption is very small, and Ke Xunhuanliyong, has the characteristics that energy conservation and environmental protection；Two be arranged in water tank and on column
A temperature sensor can carry out the detection of room temperature and water temperature automatically, and accuracy is not less than 0.1 DEG C, for calibrating band temperature monitoring work(
The liquid level gauge of energy provides very big convenience；Column bottom end setting bump joint, can by install crossover sub come realize with respectively
The docking of kind specification liquid level gauge, improves the versatility of the present invention；The universal wheel and support leg installed on pedestal, facilitate equipment
The adjusting of whole movement and height.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Wherein：1. pedestal, 2. universal wheels, 3. support legs, 4. pedestals, 5. glass tubes, 6. delivery hoses, 7. columns, 8. water
Case, 9. upper covers, 10. leading screws, 11. servo motors, 12. laser range finders, 13. control cabinets, 14. interfaces, 15. water supply hoses, 16.
Water pump, 17. liquid level sensors, 18. bump joints, 19. first temperature sensors, 20. second temperature sensors.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention will be described in further detail.
A kind of liquid level gauge automatic calibrator, structure is as shown in Figure 1, including pedestal 1, upper cover 9, water tank 8, laser ranging
Instrument 12, control cabinet 13, glass tube 5 and several columns 7.Wherein, pedestal 1 is arranged in parallel with about 9 upper cover, 7 sum number of several columns
Root glass tube 5 is mounted between pedestal 1 and upper cover 9, and the bottom end of column is fixedly connected with pedestal, and top and the upper cover of column are fixed
Connection, to support upper cover and water tank；The bottom end of glass tube 5 is mounted on by pedestal 4 on pedestal 1, and is connected with pedestal 4, glass
Glass pipe is arranged perpendicular to ground；Water tank 8 is slidably arranged in the space that several columns 7 surround, and is driven by elevating mechanism, real
It is now vertically moved up or down, is connected to by several delivery hoses 6 between water tank 8 and pedestal 4, to realize the total liquid level of glass tube and water tank
Setting.
The discharge mouth of a river is provided on water tank 8, the discharge mouth of a river is connected to by water supply hose 15 with water source, is set on water supply hose 15
It is equipped with water pump 16, power is provided for flow.Liquid level sensor 17 is installed, for measuring the water level in water tank in water tank 8；Work as water
When position changes the bound water level for reaching system setting as water tank 8 moves up and down, liquid level sensor 17 is sent out to control cabinet 13
Go out signal, control cabinet starts water pump according to the data that liquid level sensor transmits and carries out water supply or drain operation to water tank.
Laser range finder 12 is mounted on the lower face of upper cover 9, for measuring between water tank bottom surface and laser range finder 12
Distance, and be transferred to control cabinet, the height of water level calculates in the water tank that liquid level sensor measures in control cabinet combination water tank
Actual accurate water level.
The side of upper cover 9 is equipped with interface 14, and one end of interface is connect with the data line of liquid level gauge to be examined and determine, interface it is another
One end connects the signal input part of control cabinet by data line, and the level value for measuring liquid level gauge to be examined and determine is transferred to control
Case.
In the present invention, elevating mechanism setting is in upper cover and pedestal, for driving water tank or more under the instruction of control cabinet
It is mobile.The structure of elevating mechanism is as shown in Figure 1, include leading screw 10, feed screw nut and servo motor 11.Wherein, feed screw nut
Center at the middle part of 8 lateral wall of water tank or water tank roof and bottom plate is set；Servo motor is mounted on the top end face of upper cover
On；The lower end rotation of leading screw 10 is mounted on pedestal 1, the upper end of leading screw 10 pass through after upper cover 9 with 11 axis connection of servo motor,
The signal output end of the controlled end connection control cabinet of servo motor.
More glass tubes can be set in the present invention, on pedestal, be mutually parallel between each glass tube, and be each perpendicular to ground, it is more
The setting of root glass tube may be implemented to examine and determine while multiple liquid level gauges to be examined and determine.When more glass tubes share a pedestal,
Multiple mounting holes can be set on pedestal, and setting one in vivo of being present is connected to the inner cavity of multiple mounting holes, opens up and matches on the side wall of pedestal
The through-hole for filling delivery hose, to realize the connection of liquid level between each glass tube.
To improve the versatility of the present invention, one bump joint 18 is set in the bottom end of column, one end of bump joint 18 is logical
It crosses delivery hose to be connected to water tank 8, the other end is connected to by crossover sub with liquid level gauge to be examined and determine, for realizing classes such as magnetic turning plates
The calibrating of type liquid level gauge.The present invention is also mounted with to measure the first temperature sensor 19 of water temperature in water tank, be installed on column 7
It is useful for the second temperature sensor 20 of detection room temperature, for realizing the calibrating with temperature-monitoring function liquid level gauge, above-mentioned temperature
The output end of degree sensor is connect with the input terminal of control cabinet respectively.
For the labor intensity for mitigating in calibrating installation detection process, it is mounted with that universal wheel 2 and support device are whole on pedestal 1
The support leg 3 of body；In mobile device, adjusting support leg makes universal wheel land, and pushing meanss walking is moved easily；When
When being moved to position calibrating position, adjusting support leg keeps support leg support device whole, and keeps the verticality of glass tube, improves
Examine and determine accuracy.For the verification result of intuitive display control case, display screen is provided on control cabinet.
When the present invention is used to examine and determine the types liquid level gauge such as ultrasonic wave, liquid level gauge to be examined and determine is installed on to the top of glass tube 5,
In the data line access interface 14 of liquid level gauge to be examined and determine, control cabinet starts servo motor, and driving water tank is in the space between column
It moves up and down；When water tank 8 moves up and down under the drive of driving mechanism, in the glass tube 5 that is connected to 8 delivery hose 6 of water tank
Liquid level can also change therewith, liquid level gauge to be examined and determine is by the numeric feedback detected to control cabinet 13；Control cabinet is according to red simultaneously
Outside line rangefinder 12 measures the water level value meter in the water tank that liquid level sensor 17 measures in water tank floor height value and water tank
Actual accurate level value is calculated, is compared with the value of feedback of liquid level gauge to be examined and determine, to judge whether liquid level gauge is qualified；And it will
Measurement result is shown by display screen.
When the present invention is used to examine and determine the liquid level gauge of the types such as magnetic turning plate, the bottom end of delivery hose 6 is switched to bump joint
18 one end；The other end of bump joint 18 is connected to by crossover sub with liquid level gauge to be examined and determine, and bump joint and water outlet are passed through
Hose will liquid level gauge be examined and determine and water tank unicom, in the data line access interface 14 of liquid level gauge to be examined and determine；When water tank moves up and down
When, liquid level changes therewith in liquid level gauge to be examined and determine in communication, and will detection signal value of feedback control cabinet 13；Control cabinet will be anti-
Feedback value is compared with exact value, and whether judgement liquid level gauge is qualified.
Above-described embodiment is highly preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention in any way.This field
Technical staff should be understood that without departing from the spirit and scope of the invention can to the details of technical solution of the present invention and
Form is modified or is replaced, but these modifications and replacement are each fallen in protection scope of the present invention.
Claims (6)
1. a kind of liquid level gauge automatic calibrator, which is characterized in that connect including being arranged in parallel and being fixed by several columns up and down
The upper cover connect（9）And pedestal（1）, in a plurality of uprights（7）It is slided in the space surrounded and is equipped with a water tank moved up and down（8）,
The outside of column is by being fixed on pedestal（1）Upper pedestal（4）It is provided with glass tube straight up（5）, glass tube（5）Bottom end
Pass through delivery hose（6）It is connected to water tank bottom；The water tank（8）It is provided with the discharge mouth of a river, the discharge mouth of a river is by waiting for water pump
（16）Water supply hose（15）It is connected to water source, water tank（8）Inside it is additionally provided with the liquid level sensor for measuring water level in water tank
（17）；The upper cover（9）Lower face the laser range finder of measure water bottom face height value is installed（12）, upper cover
（9）Side be equipped with and liquid level gauge to be examined and determine connection interface（14）, upper cover（9）Top end face on be provided with coordinate water tank on
Lower movement, water tank plumbing and judge the whether qualified control cabinet of liquid level gauge to be examined and determine（13）；The signal of the control cabinet is defeated
Enter the output end that end is separately connected liquid level sensor and laser range finder, the signal output end of control cabinet connects the controlled of water pump
End.
2. a kind of liquid level gauge automatic calibrator according to claim 1, which is characterized in that the water tank is existed by setting
Upper cover is moved up and down with the elevating mechanism realization on pedestal；The elevating mechanism includes the leading screw for being parallel to glass tube setting
（10）, be arranged on water tank with threads of lead screw be equipped with feed screw nut and driving leading screw action servo motor（11）；It is described
Leading screw（10）Lower end rotation be mounted on pedestal（1）On, leading screw（10）Upper end pass through upper cover（9）Afterwards be installed on the upper cover
Servo motor（11）Axis connection；The signal output end of the controlled end connection control cabinet of the servo motor.
3. a kind of liquid level gauge automatic calibrator according to claim 1, which is characterized in that the pedestal of the column periphery
On be provided with several glass tubes being mutually parallel, the pedestal of installation glass tube bottom end is provided with the inner cavity being connected to glass tube, seat
The through-hole of equipped delivery hose bottom end is offered on the side wall of body.
4. a kind of liquid level gauge automatic calibrator according to claim 1, which is characterized in that also pacify the bottom end of the column
Equipped with bump joint（18）, one end of bump joint passes through delivery hose（6）Be connected to water tank, the other end by crossover sub with
Liquid level gauge connection to be examined and determine.
5. a kind of liquid level gauge automatic calibrator according to claim 1, which is characterized in that be additionally provided in the water tank
The first temperature sensor for detecting water temperature（19）, column（7）On second temperature sensor for detecting room temperature is installed
（20）, the output end of two temperatures sensor connect with the signal input part of control cabinet respectively.
6. a kind of liquid level gauge automatic calibrator according to any one of claims 1 to 5, which is characterized in that the control
The display screen for showing verification result is additionally provided on case.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820172017 | 2018-01-31 | ||
| CN2018201720179 | 2018-01-31 |
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| Publication Number | Publication Date |
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| CN108344474A true CN108344474A (en) | 2018-07-31 |
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| CN201820455988.4U Active CN208847298U (en) | 2018-01-31 | 2018-04-03 | A kind of liquidometer automatic calibrator |
| CN201810285649.0A Pending CN108344474A (en) | 2018-01-31 | 2018-04-03 | A kind of liquid level gauge automatic calibrator |
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| CN201820455988.4U Active CN208847298U (en) | 2018-01-31 | 2018-04-03 | A kind of liquidometer automatic calibrator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017885A (en) * | 2019-04-24 | 2019-07-16 | 中国长江电力股份有限公司 | A kind of roof-mounted magnetic double level gauge automatic check device and method |
| CN110763311A (en) * | 2019-12-03 | 2020-02-07 | 中环天仪（天津）气象仪器有限公司 | Automatic detection equipment and detection method for ultrasonic evaporation sensor |
| CN113758542A (en) * | 2020-06-03 | 2021-12-07 | 中国石油天然气股份有限公司 | Method for comparing and calculating crude oil stabilizing tower and outdoor liquid level meter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455372B (en) * | 2019-08-12 | 2024-08-06 | 深圳市宏电技术股份有限公司 | Bubble type liquid level meter detection device, system and method |
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| CN113758542A (en) * | 2020-06-03 | 2021-12-07 | 中国石油天然气股份有限公司 | Method for comparing and calculating crude oil stabilizing tower and outdoor liquid level meter |
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| CN208847298U (en) | 2019-05-10 |
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Inventor after: Feng Jingyi Inventor after: Wu Qiang Inventor after: Ji Zhe Inventor after: Ding Hongsheng Inventor after: Qiu Dongyue Inventor after: Wang Bijun Inventor after: Yu Yanlong Inventor after: Li Haiyan Inventor after: Su Yajing Inventor after: Sun Xinya Inventor before: Qiu Dongyue Inventor before: Wu Qiang Inventor before: Ji Zhe Inventor before: Ding Hongsheng Inventor before: Wang Bijun Inventor before: Feng Jingyi Inventor before: Yu Yanlong Inventor before: Li Haiyan Inventor before: Su Yajing Inventor before: Sun Xinya |
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