CN208937143U - Tank and its non-contact liquid level measuring device - Google Patents
Tank and its non-contact liquid level measuring device Download PDFInfo
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- CN208937143U CN208937143U CN201821996601.2U CN201821996601U CN208937143U CN 208937143 U CN208937143 U CN 208937143U CN 201821996601 U CN201821996601 U CN 201821996601U CN 208937143 U CN208937143 U CN 208937143U
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Abstract
本实用新型提供了一种罐体及其非接触式的液位测量装置，涉及罐式集装箱技术领域。该液位测量装置包括安装于罐体外部的控制表头以及超声波探头。超声波探头用于在控制表头的控制下发射超声波，并将被液体反射回来的超声波回波的信号也反馈给控制表头。控制表头包括控制器以及连接控制器的输入单元，其中，输入单元用于输入能够确定超声波在液体内的声速所需的参数。如此，控制器可根据参数和温度传感器感测的温度确定超声波在液体中的声速。最后，控制器确定从发射超声波至收到超声波回波的时间差，并根据声速和时间差确定液体液位。该测量装置有效地解决传统测量装置安装繁琐的技术难题，简化了安装步骤，提高了测量精度。
The utility model provides a tank body and a non-contact liquid level measuring device thereof, which relates to the technical field of tank containers. The liquid level measuring device includes a control meter and an ultrasonic probe installed outside the tank body. The ultrasonic probe is used to transmit ultrasonic waves under the control of the control meter, and also feed back the ultrasonic echo signal reflected by the liquid to the control meter. The control head includes a controller and an input unit connected to the controller, wherein the input unit is used for inputting parameters required for determining the sound speed of the ultrasonic wave in the liquid. In this way, the controller can determine the speed of sound of the ultrasonic waves in the liquid based on the parameters and the temperature sensed by the temperature sensor. Finally, the controller determines the time difference from transmitting ultrasonic waves to receiving ultrasonic echoes, and determines the liquid level according to the speed of sound and the time difference. The measuring device effectively solves the technical problem of complicated installation of the traditional measuring device, simplifies the installation steps, and improves the measurement accuracy.
Description
Technical field
The utility model relates to pot-type container technology field, in particular to a kind of contactless liquid applied to tank body
Level measuring arrangement.
Background technique
With the development of modern industry, tank container carries out the loading of article and transport has been common transportation resources,
In order to further enhance the intelligent level of tank container, the correct monitoring that liquid level and temperature are carried out to it is just extremely important.
Meanwhile the installation of most of traditional liquid level meter, it requires in container external apertures, not only mounting condition harshness is high and difficulty
Height, but also will affect the intrinsic safety and reliability of tank container.
There are Impulse Radar Level Transmitter and ultrasonic level gage by the way of non-contact measurement liquid level at present, but all exists
Serious technological deficiency below:
1, for pulsed radar level, meter blind area is big: most of common radar operating frequency range is 2~30GHz
Between, thus bring blind area is probably at 0.5~1 meter or so, and for tens meters of height of storage tank, this part blind area is basic
On be negligible.But for medium-sized closed container of the section diameter between 1.5-2.5 meters, blind area meeting big in this way
It accounts between the 25%~40% of range, seriously affects normal use.Simultaneously as Impulse Radar Level Transmitter is by one
The antenna of horn shape emits and receives electromagnetic wave signal, and when the medium in tank case has volatilization, the vapor of volatilization exists
When condensing into droplet on horn mouth, will lead to electromagnetic wave can not launch and can not be received back the electromagnetic wave signal come, thus
Cause the seemingly-dead phenomenon of liquidometer.
2, for traditional ultrasonic level gage, because of the temperature change of measured medium, phase can also occur for Media density
It should change, and it is well known that sound wave is different in the speed of the Propagation of different densities, to directly affect measurement knot
Fruit causes significant errors.
Utility model content
First of the utility model is designed to provide a kind of contactless liquid level emasuring device applied to tank body,
It influences it by the external world, keeps high stability and high-precision measurement effect, to solve pulse traditional in the prior art
The problems such as measurement blind area caused by radar level gauge and ultrasonic level gage is big, measured deviation is big.
Second of the utility model is designed to provide a kind of tank body, and tank body body exterior is equipped with above-mentioned liquid level
Measuring device.
In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of contactless level gauging
Device is applied to the measurement intracorporal liquid level of tank, comprising: the control gauge outfit that is installed on outside tank body and with the control
The ultrasonic probe of gauge outfit electrical connection；The ultrasonic probe includes ultrasonic transducer and temperature sensor；The control
Gauge outfit includes controller and input unit connected to the controller, and the controller connects ultrasonic transducer and temperature sensing
Device；The input unit can determine ultrasonic wave parameter needed for the velocity of sound in tank body liquid, the parameter and liquid for inputting
Body type is corresponding；Controller controls ultrasonic transducer and emits ultrasonic wave to object to be tested, and receives and surpassed by what reflection liquid returned
Sound echo, and return to controller；Controller determines that the time of control ultrasonic transducer transmitting ultrasonic wave and controller connect
The time difference for receiving the time of ultrasonic echo, according to the temperature of the parameter of input unit input and temperature sensor sensing
It determines the velocity of sound of ultrasonic wave in a liquid, liquid level is determined according to the ultrasonic wave velocity of sound in a liquid and the time difference.
One embodiment according to the present utility model further includes transmitting unit and receiving unit in the control gauge outfit；
The transmitting unit is separately connected the ultrasonic transducer and the controller, is used for the control signal for issuing controller
It is transferred to ultrasonic transducer and is converted to ultrasonic wave；The receiving unit is separately connected the ultrasonic transducer and the control
Device, is used to receive the ultrasonic echo of ultrasonic transducer and converts it into echo-signal and be transferred to controller.
One embodiment according to the present utility model, the transmitting unit include sequentially connected first amplifying circuit and rise
Volt circuit；First amplifying circuit connects the controller, and the booster circuit connects the ultrasonic transducer；The control
Amplification and boosting of the signal processed by the two are transmitted to the ultrasonic transducer.
One embodiment according to the present utility model, the receiving unit include sequentially connected second amplifying circuit, filter
Wave circuit and shaping circuit；Second amplifying circuit connects the ultrasonic transducer, and the shaping circuit is connected to institute
State controller；The echo-signal passes through amplification, the shaping, filter transmission to the controller of three.
One embodiment according to the present utility model, the control gauge outfit further includes display unit；The display unit connects
The controller is connect, the liquid level data measured for receiving and showing controller.
One embodiment according to the present utility model, the display unit are shown respectively under the control of the controller
The parameter, the temperature and the time difference.
One embodiment according to the present utility model, the control gauge outfit further include being connected to the digital-to-analogue turn of the controller
Change unit；The liquid level data that the D/A conversion unit can measure the controller is converted to used in corresponding industrialization
Analog signal.
One embodiment according to the present utility model, the liquid level emasuring device further include alarm unit；The alarm is single
Member connects the controller, and opens or closes alarm condition under the control of the controller.
One embodiment according to the present utility model, the ultrasonic probe are set on the bottom wall of tank body；The ultrasonic wave
The direction of the launch of energy converter is perpendicular to liquid surface.
The embodiments of the present invention also provide a kind of tank body, including tank body main body, to be contained in the tank body master intracorporal
Liquid and the liquid level emasuring device on tank body body outer wall.
As shown from the above technical solution, a kind of measuring device for measuring tank level provided by the utility model is at least
It has the following advantages that and good effect:
1, it installs simple and convenient.Using contactless mounting means, do not need to carry out any destructive procedure to tank body,
It need to only be installed outside tank body, operation is extremely easy, safe.
2, measurement accuracy is high.Due to using acoustic velocity measutement and parameter and temperature correction technology, so that measurement accuracy is compared with it
He is greatly improved using the product of fixed velocity of sound technology.
3, blind area is small.It is more much bigger than the aerial velocity of sound since the velocity of sound of ultrasonic wave in a liquid is than very fast, so
Blind area is accordingly also much smaller.
4, temperature humidity adaptability is good, antiacid alkali, good corrosion resistance.Since measuring device is mounted on outside tank body,
Temperature inside tank case, humidity etc. do not constitute product substantially and negatively affect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the liquid level emasuring device being set on tank body in the utility model embodiment.
Fig. 2 is the block diagram of liquid level emasuring device in the utility model embodiment.
Fig. 3 is the circuit diagram of transmitting unit and receiving unit in the utility model embodiment.
The reference numerals are as follows: 1000- tank body；200- tank body main body；100- liquid level emasuring device；1- controls gauge outfit；
11- controller；12- input unit；13- transmitting unit；The first amplifying circuit of 131-；132- booster circuit；14- receiving unit；
The second amplifying circuit of 141-；142- filter circuit；143- shaping circuit；15- display unit；16- alarm unit；17- digital-to-analogue turns
Change unit；2- ultrasonic probe；21- ultrasonic transducer；22- temperature sensor.
Specific embodiment
The exemplary embodiment for embodying the utility model features and advantages will describe in detail in the following description.It should be understood that
Be that the utility model can have various variations in different embodiments, all do not depart from the model of the utility model
It encloses, and the descriptions and illustrations are essentially for illustration purposes, rather than to limit the utility model.
The utility model provides a kind of tank body and the liquid level emasuring device applied to liquid in measurement tank body.In this reality
It applies in example, which is generally the tank container for being used to store liquid；Certainly, which can also be not limited to other storage appearances
Device.
In order to solve the difficult to install at present and big technical problem of measurement error, this liquid level emasuring device is on mounting means
Using contactless design, simplifies, is efficient, safety, avoiding the destructive procedure for tank body of conventional mounting mode.
Further, which uses the collimation technique of velocity of sound relevant parameter and temperature, excludes many disturbing factors, error
It is smaller, it ensure that measurement accuracy.
Below in conjunction with the attached drawing of this specification, the liquid level emasuring device of the present embodiment is installed on outside tank body and such as
What realizes that the technical solution of measurement is further described in detail.
Fig. 1 is please referred to, tank body 1000 includes tank body main body 200, the liquid to be detected being contained in inside tank body main body 200
Body.The liquid level emasuring device 100 is installed in tank body main body 200 in a manner of the installation of outside.That includes be respectively arranged in tank
Control gauge outfit 1 and ultrasonic probe 2 on 200 outer wall of phosphor bodies.
In the present embodiment, control gauge outfit 1 be installed on 200 side wall of tank body main body, with facilitate staff check with
Maintenance.And the installation site of ultrasonic probe 2 is on the bottom wall of 200 underface of tank body main body, this is conducive to ultrasonic wave spy
The direction of the launch of first 2 ultrasonic waves issued is perpendicular to liquid surface, to reach accurate measurement effect.
The measurement procedure of liquid level emasuring device 100 is substantially are as follows: firstly, control gauge outfit 1 issues control signal, it is super for controlling
Sonic probe 2 emit ultrasonic wave, and obtain ultrasonic wave transmitting and reflected transmission time T.
It eventually passes through and the velocity of sound V of ultrasonic wave and transmission time T is substituted into formulaAnd obtain liquid level data D.
Referring to figure 2., ultrasonic transducer 21 and temperature sensor 22 are equipped in ultrasonic probe 2.
Wherein, ultrasonic transducer 21 is connected to controller 11, connects suspension control signal and converts it into ultrasonic wave and emit
Ultrasonic wave out.Temperature sensor 22 connects controller 11, and the fluid temperature signal that will acquire is transferred to controller 11.Temperature
The precision of sensor 22 is high, can perceive in real time and obtain the wall temperature of tank base, and this wall temperature and tank interior
The temperature of liquid is more consistent, therefore the accuracy for measuring fluid temperature is also higher.
Referring once again to Fig. 2, controlling gauge outfit 1 includes controller 11 and the input unit 12 connecting with controller 11, hair
Penetrate unit 13, receiving unit 14, display unit 15, alarm unit 16 and D/A conversion unit 17.
Since ultrasonic wave is different in different temperatures and the spread speed under medium, to directly influence measurement essence
Degree.In order to obtain more accurate ultrasonic velocity V, input unit 12 can determine the reality of ultrasonic wave in a liquid for inputting
Parameter needed for the velocity of sound of border.
The parameter refers in particular to medium parameter corresponding with tank body kind of liquid.The storage inside data module of controller 11 is deposited
Contain largely about medium at different temperatures with the correspondence table of the velocity of sound.The table is by a large amount of empirical data
It is obtained with experimental data, and is that there is confidence level by verifying.In this way, having got liquid temperature in controller 11
Under the premise of degree and medium parameter, accurate ultrasonic velocity V just can be obtained.
Next referring in particular to transmitting unit 13 shown in Fig. 3 and receiving unit 14.Both it is connected to control
Device 11 and ultrasonic transducer 21.
Specifically, transmitting unit 13 includes sequentially connected first amplifying circuit 131 and booster circuit 132.First amplification
Circuit 131 connects controller 11, and booster circuit 132 connects ultrasonic transducer 21.Its role is to, will control signal by the
One amplifying circuit 131, the amplification of booster circuit 132 and boosting are smoothly transmitted to ultrasonic transducer 21.Receiving unit 14 includes
Sequentially connected second amplifying circuit 141, filter circuit 142 and shaping circuit 143.Second amplifying circuit 141 connects ultrasound
Wave transducer 21, shaping circuit 143 are connected to controller 11.Echo-signal is by above-mentioned amplification, filtering, shaping circuit 143
Amplification, shaping, filter transmission to controller 11.
Its control principle is as follows: controller 11 issues control signal, and control signal passes after the boosting of transmitting unit 13
It is defeated by ultrasonic transducer 21 and is converted to ultrasonic wave.At this point, the launch time of ultrasonic wave is T1.Ultrasonic wave is in the table for encountering liquid
Face is reflected back, and the ultrasonic wave being reflected back is received by ultrasonic transducer 21 and is converted into ultrasonic echo.At this point, connecing
Time by ultrasonic echo is T2.The ultrasonic echo passes through receiving unit 14, and be amplified, shaping, after filtering processing,
Its echo-signal is transferred to controller 11.In this signals transmission, controller 11 can obtain transmission time T, i.e. time
Poor T=T2-T1。
Final controller 11 passes through formulaLiquid level has been determined.
It is worth noting that the launch time T of ultrasonic wave1I.e. controller 11 issues the time for controlling signal, is reflected back toward
The time T that the ultrasonic echo come is received by ultrasonic transducer 212That is the time that receives echo-signal of controller 11.It is intermediate
Ultrasonic transducer 21 carry out the times such as amplification, the shaping of conversion time and signal between acoustic signals and electric signal
It is extremely short, it can ignore.
In this example it is shown that unit 15 is for receiving and showing the liquid level data that controller 11 measures.Certainly, it shows
Show that unit 15 can also show medium parameter, temperature, transmission time and other data that can be measured, to facilitate work people
Member's checks and operates.
D/A conversion unit 17 is used to the non-electrical physical quantity such as above-mentioned temperature, parameter being converted to analog quantity, the analog quantity
Controller 11 or display unit 15 can be just transferred to.The liquid level data that D/A conversion unit 17 can also measure controller 11 turns
Chemical conversion is corresponding to industrialize analog signal used, for example 4-20mA standard analog signal.Industrial Simulation signal and entire measurement
During the work time, analog exports in a variety of industrial control processes and detects signal needed for observing and controlling device.It the advantage is that
Guarantee the precision of measurement, while low energy consumption can also be maintained.
Alarm unit 16 opens or closes alarm condition under the control of controller 11.Specifically, when controller 11 detects
When excessively high or too low to liquid level, alarm unit 16 can be controlled and open alarm condition to remind staff.After liquid level is normal,
Alarm unit 16 is controlled and closes alarm condition.
The specific workflow of the liquid level emasuring device 100 for the present embodiment is described in detail below.
Step S01: 11 emissioning controling signal of controller, control signal are transferred to ultrasound after the boosting of transmitting unit 13
Wave transducer 21 is converted to ultrasonic wave.The launch time of ultrasonic wave is T1。
Step S02: ultrasonic wave encounters liquid surface and is reflected back and is converted into ultrasonic wave time by ultrasonic transducer 21
Wave.The time that controller 11 receives ultrasonic echo is T2。
Step S03: input unit 12 inputs liquid medium parameter.Meanwhile temperature sensing senses and takes fluid temperature signal.Control
Device 11 processed receives two signals of liquid medium parameter and fluid temperature, and determine the medium at a temperature of ultrasonic wave
Real velocity of sound V.
Step S04: controller 11 is according to formulaCalculate real-time level value D.
Certainly, S03 can also be placed on before S01 and S02, i.e., controller 11 obtains liquid medium parameter and fluid temperature
Step can be before 11 emissioning controling signal of controller.
Although describing the utility model with reference to several exemplary embodiments, it is to be understood that, term used is to say
Term bright and exemplary, and not restrictive.Since the utility model can be embodied in a variety of forms without departing from practical
Novel spirit or essence, it should therefore be appreciated that above embodiment is not limited to any of the foregoing details, and should be in accompanying right
Widely explained in spirit and scope defined by it is required that, thus fall into whole variations in claim or its equivalent scope and
Remodeling all should be appended claims and be covered.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821996601.2U CN208937143U (en) | 2018-11-29 | 2018-11-29 | Tank and its non-contact liquid level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821996601.2U CN208937143U (en) | 2018-11-29 | 2018-11-29 | Tank and its non-contact liquid level measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN208937143U true CN208937143U (en) | 2019-06-04 |
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ID=66728206
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821996601.2U Active CN208937143U (en) | 2018-11-29 | 2018-11-29 | Tank and its non-contact liquid level measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238603A (en) * | 2018-11-29 | 2020-06-05 | 南通中集罐式储运设备制造有限公司 | Tank body and non-contact liquid level measuring device thereof |
| CN113639828A (en) * | 2020-04-24 | 2021-11-12 | 西安定华电子股份有限公司 | Industrial parameter measurement system |
-
2018
- 2018-11-29 CN CN201821996601.2U patent/CN208937143U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238603A (en) * | 2018-11-29 | 2020-06-05 | 南通中集罐式储运设备制造有限公司 | Tank body and non-contact liquid level measuring device thereof |
| CN113639828A (en) * | 2020-04-24 | 2021-11-12 | 西安定华电子股份有限公司 | Industrial parameter measurement system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No. 159, Chenggang Road, Nantong City, Jiangsu Province, 226000 Patentee after: Zhongji an Ruihuan Technology Co.,Ltd. Patentee after: XI'AN DUOPUDUO INFORMATION TECHNOLOGY Co.,Ltd. Patentee after: China International Marine Containers (Group) Co.,Ltd. Patentee after: CIMC ENRIC INVESTMENT HOLDINGS (SHENZHEN) Co.,Ltd. Address before: No. 159, Chenggang Road, Nantong City, Jiangsu Province, 226002 Patentee before: NANTONG CIMC TANK EQUIPMENT Co.,Ltd. Patentee before: XI'AN DUOPUDUO INFORMATION TECHNOLOGY Co.,Ltd. Patentee before: China International Marine Containers (Group) Co.,Ltd. Patentee before: CIMC ENRIC INVESTMENT HOLDINGS (SHENZHEN) Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210430 Address after: No. 159, Chenggang Road, Nantong City, Jiangsu Province, 226002 Patentee after: Zhongji an Ruihuan Technology Co.,Ltd. Patentee after: XI'AN DUOPUDUO INFORMATION TECHNOLOGY Co.,Ltd. Address before: No. 159, Chenggang Road, Nantong City, Jiangsu Province, 226000 Patentee before: Zhongji an Ruihuan Technology Co.,Ltd. Patentee before: XI'AN DUOPUDUO INFORMATION TECHNOLOGY Co.,Ltd. Patentee before: China International Marine Containers (Group) Co.,Ltd. Patentee before: CIMC ENRIC INVESTMENT HOLDINGS (SHENZHEN) Co.,Ltd. |