CN107091667A - The liquid level detection system that a kind of use temperature sensor is realized - Google Patents
The liquid level detection system that a kind of use temperature sensor is realized Download PDFInfo
- Publication number
- CN107091667A CN107091667A CN201710317612.7A CN201710317612A CN107091667A CN 107091667 A CN107091667 A CN 107091667A CN 201710317612 A CN201710317612 A CN 201710317612A CN 107091667 A CN107091667 A CN 107091667A
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- Prior art keywords
- temperature
- liquid level
- temperature sensor
- protecting tube
- tank body
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/80—Arrangements for signal processing
- G01F23/802—Particular electronic circuits for digital processing equipment
- G01F23/804—Particular electronic circuits for digital processing equipment containing circuits handling parameters other than liquid level
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The liquid level detection system that a kind of use temperature sensor is realized, belongs to level gauging field.Solve existing level detection mode is influenceed by external factors such as detection environment, causes the problem of detection accuracy is low.The present invention includes protecting tube, temperature detecting unit, digital collection transducing unit and industrial computer；Protecting tube sealed bottom, temperature detecting unit is fixed in protecting tube, for detecting the environment temperature in tank body to be measured under different depth；Environment temperature in the tank body to be measured that digital collection transducing unit detects temperature detecting unit under different depth is carried out after signal conversion and amplification, and industrial computer is sent to by signal wire；Industrial computer obtains between gas and liquid the temperature difference between the temperature difference, liquid and deposit, so that it is determined that the liquid level in tank body to be measured according to the environment temperature under the different depth of reception；The length of protecting tube is more than the depth of tank body to be measured.Present invention is mainly used for liquid level is detected.
Description
Technical field
The invention belongs to level gauging field.
Background technology
At present it is known that common level gauging mode is divided into four types, i.e., the liquid level measured by buoyancy mode
Meter type, measured by pressure mode liquid level gauge type, measured by reflection mode liquid level gauge type, pass through
The liquid level gauge type that electrically conducting manner is measured.But with the liquid level of tank measurement measurement place mode of production, occupation mode and inspection
Determine mode different, it is also not possible to competent all measuring environments.Buoyancy mode measures liquid level presence can not remote tracing；Pressure
There is sensor scaling and impurity attachment influence in mode measurement, make accuracy of measurement low；It is gentle to there is steam in reflection mode measurement
, when reflecting liquid level, there is deviation in the influence such as bubble；There is liquid level cost impact in electrically conducting manner measurement.Therefore, need badly it is a kind of not by
External factor influences, so as to improve the tester of detection accuracy.
The content of the invention
The present invention is to be influenceed to solve existing level detection mode by external factors such as detection environment, causes detection accuracy
Low the problem of, the invention provides the liquid level detection system that a kind of use temperature sensor is realized.
The liquid level detection system that a kind of use temperature sensor is realized, it includes protecting tube, temperature detecting unit, numeral and adopted
Collect transducing unit and industrial computer；
Protecting tube sealed bottom, temperature detecting unit is fixed in protecting tube, for detecting different depth in tank body to be measured
Under environment temperature；
Environment temperature in the tank body to be measured that digital collection transducing unit detects temperature detecting unit under different depth
Carry out after signal conversion and amplification, industrial computer is sent to by signal wire；
Industrial computer obtains the temperature difference, liquid and deposition between gas and liquid according to the environment temperature under the different depth of reception
The temperature difference between thing, so that it is determined that the liquid level in tank body to be measured；
The length of protecting tube is more than the depth of tank body to be measured.
Described temperature detecting unit includes N number of temperature sensor and flexible fixed shell, and N is whole more than or equal to 10
Number；
The databases of industrial computer contain the positional information corresponding to each temperature sensor,
Along on the length direction of flexible fixed shell, N number of temperature sensor is equidistantly sequentially fixed at soft from low to high
Property fixed shell inwall on, form section temperature chain, and the data signal output of N number of temperature sensor passes through bus and number
The data signal input connection of word collection transducing unit,
The sealed bottom of flexible fixed shell, and the flexible fixed shell is in protecting tube.
The equal length of the length of described section temperature chain and flexible fixed shell.
The described length of flexible fixed shell levels off to equal with the length of protecting tube.
The bottom of described flexible fixed shell is provided with sharp portion.
Described protecting tube is made up of dismountable multistage sleeve pipe.
The tank body to be measured 5 is to be used to storing or handling crude oil, sewage and other liquid containers, and bottom can sink in operation
Deposit in a small amount of pipe of drop, middle part is pot liquid part, and top is tank body liquid level overhead high part, i.e. air and a small amount of steaming
Vapour, referring specifically to Fig. 1.So section temperature chain can obtain longitudinal ladder layering (2-4 centimetres) mean temperature section signal, then
The software processing installed by industrial computer, and gas, the fluid temperature temperature difference；Liquid level, the solid temperature difference, measurable acquisition tank to be measured
The liquid level of liquid portion in body 5, the solid high (thickness) of deposit is spent in tank.
The beneficial effects of the invention are as follows：The liquid level detection system that a kind of use temperature sensor provided by the present invention is realized,
Measured by data signal, be easy to manage, detect, can arbitrarily can adjust using tank body detection height requirement.In detection process
Do not influenceed by measuring environment, detection accuracy improves more than 30%.It is particularly significant that ladder digital temperature letter can be utilized
Number measurement liquid level and solid deposited height, and obtain liquid portion section Temperature Distribution, to viscous crude, thin oil, sewage, drug class intelligence
Dynamic tracking creates condition, breaches more than 110 DEG C liquid detecting technology (Nai Wen≤130 DEG C), it is to avoid sensor knot
Steam and aeration on dirt and attachment influence, liquid side, according to solid, liquid, the temperature feature of gas, realize tank storage
Dynamic digital intelligent remote is managed, it is to avoid tank body heat tracing (heating) temperature is too high to cause tank boil-overs accident, to avoid temperature too low
Oil water mixture or other liquid sedimentation effects are influenceed, it also avoid steam and bubble interference on liquid level and cause liquid level unreal etc. asking
Topic.
Brief description of the drawings
The principle schematic for the liquid level detection system that Fig. 1 realizes for a kind of use temperature sensor of the present invention；It is attached
Icon note 5 represents tank body to be measured, and reference 6 represents liquid portion in tank body to be measured, and reference 7 represents to sink in tank body to be measured
Product thing；
Fig. 2 is the structural representation of flexible fixed shell；
Fig. 3 is the cut-away view of temperature detecting unit；
Fig. 4 is the structural representation of protecting tube；Reference 8 represents flange；
Fig. 5 is Fig. 4 main sectional view.
Embodiment
Embodiment one：Illustrate present embodiment referring to Fig. 1, one kind described in present embodiment uses TEMP
The liquid level detection system that device is realized, it includes protecting tube 1, temperature detecting unit 2, digital collection transducing unit 3, industrial computer 4；
The sealed bottom of protecting tube 1, temperature detecting unit 2 is fixed in protecting tube 1, different in tank body 5 to be measured for detecting
Environment temperature under depth；
Environment temperature in the tank body to be measured 5 that digital collection transducing unit 3 detects temperature detecting unit 2 under different depth
Degree is carried out after signal conversion and amplification, and industrial computer 4 is sent to by signal wire；
Industrial computer 4 obtains the temperature difference, liquid and deposition between gas and liquid according to the environment temperature under the different depth of reception
The temperature difference between thing, so that it is determined that the liquid level in tank body to be measured 5；
The length of protecting tube 1 is more than the depth of tank body 5 to be measured.
Present embodiment, it is specifically used during, protecting tube 1 is vertically goed deep into tank body 5 to be measured, and the bottom of protecting tube 1 with
Tank body 5 to be measured leaves space, prevents that protecting tube 1 is contacted with the bottom of tank body 5 to be measured caused by expanding with heat and contract with cold, and produces protecting tube 1
Deformation, is damaged temperature detecting unit 2, influences detection accuracy, and ensure temperature detecting unit 2 and the fluid level scale of tank body 5 to be measured
Position is synchronous, and protecting tube 1 is fixedly connected by flange with the top of tank body 5 to be measured.
There is the temperature difference between gas, liquid；There is the temperature difference between liquid level, solid, tank to be measured is detected by temperature detecting unit 2
Environment temperature in body 5 under different depth, obtains ladder digital temperature signal, there is Temperature jump between gas, liquid, liquid level,
There is Temperature jump between solid, the temperature difference is judged by the analysis of industrial computer 4, so as to carry out gas, liquid and deposition to tank body 5 to be measured
Thing carries out subregion, the critical-temperature between gas and liquid is determined, so that it is determined that the liquid level in tank body to be measured 5.Can also basis
Liquid portion section Temperature Distribution, to measure liquid depth and solid deposited height.
Protecting tube 1 is preferred to use 1Cr18Ni9Ti materials.
Embodiment two：Illustrate present embodiment, present embodiment and embodiment one referring to Fig. 1 to Fig. 5
The difference for the liquid level detection system that a kind of described use temperature sensor is realized is that described temperature detecting unit 2 includes N
Individual temperature sensor 2-1 is the integer more than or equal to 10 with flexible fixed shell 2-2, N；
The databases of industrial computer 4 contain the positional information corresponding to each temperature sensor 2-1,
Along on flexible fixed shell 2-2 length direction, N number of temperature sensor 2-1 is equidistantly solid successively from low to high
On the inwall for being scheduled on flexible fixed shell 2-2, section temperature chain, and N number of temperature sensor 2-1 data signal output are formed
It is connected by bus with the data signal input of digital collection transducing unit 3,
Flexible fixed shell 2-2 sealed bottom, and the flexible fixed shell 2-2 is in protecting tube 1.
In present embodiment, N number of temperature sensor 2-1 is equidistantly sequentially fixed at flexible fixed shell 2-2 from low to high
Inwall on, form section temperature chain, liquid portion section Temperature Distribution obtained by the section temperature chain, measurable acquisition treats
Survey the liquid level of liquid portion in tank body 5, in tank deposit the high thickness of solid.
The flexible flexible windings of fixed shell 2-2, are easy to flexible fixed shell 2-2 carrying and installation, and each temperature is passed
Sensor 2-1 is fixed on flexible fixed shell 2-2 relevant position, and each temperature sensor 2-1 one elevation information of correspondence.
Embodiment three：Illustrate present embodiment, present embodiment and embodiment two referring to Fig. 1 to Fig. 5
The difference for the liquid level detection system that a kind of described use temperature sensor is realized is, the length of described section temperature chain with
Flexible fixed shell 2-2 equal length.
In present embodiment, the length of section temperature chain is arranged to equal with flexible fixed shell 2-2 length, is easy to
Temperature sensor 2-1 positioning and the setting of scale label.
Embodiment four：Illustrate present embodiment, present embodiment and embodiment two referring to Fig. 1 to Fig. 5
The difference for the liquid level detection system that a kind of described use temperature sensor is realized is, described flexible fixed shell 2-2's
Length levels off to equal with the length of protecting tube 1.
Present embodiment, the length and the length of protecting tube 1 for making flexible fixed shell 2-2 level off to it is equal, to meet
The measurement of various liquid levels.
Embodiment five：Illustrate present embodiment, present embodiment and embodiment two referring to Fig. 1 to Fig. 5
The difference for the liquid level detection system that a kind of described use temperature sensor is realized is, described flexible fixed shell 2-2's
Bottom is provided with sharp portion.
Present embodiment, the presence of sharp portion is easy in flexible fixed shell 2-2 insertions protecting tube 1, saves the set-up time.
Embodiment six：Illustrate present embodiment, present embodiment and embodiment two referring to Fig. 1 to Fig. 5
The difference for the liquid level detection system that a kind of described use temperature sensor is realized is that described protecting tube 1 is by dismountable
Multistage sleeve pipe is constituted.
Present embodiment, described protecting tube 1 is made up of dismountable multistage sleeve pipe, this kind of set-up mode, is easy to dismounting,
Save the set-up time.
Claims (6)
1. the liquid level detection system that a kind of use temperature sensor is realized, it is characterised in that it includes protecting tube (1), temperature and examined
Survey unit (2), digital collection transducing unit (3) and industrial computer (4)；
Protecting tube (1) sealed bottom, temperature detecting unit (2) is fixed in protecting tube (1), for detecting in tank body to be measured (5)
Environment temperature under different depth；
Environment under tank body to be measured (5) interior different depth that digital collection transducing unit (3) detects temperature detecting unit (2)
Temperature is carried out after signal conversion and amplification, and industrial computer (4) is sent to by signal wire；
Industrial computer (4) obtains the temperature difference, liquid and deposit between gas and liquid according to the environment temperature under the different depth of reception
Between the temperature difference, so that it is determined that the liquid level in tank body to be measured (5)；
The length of protecting tube (1) is more than the depth of tank body to be measured (5).
2. the liquid level detection system that a kind of use temperature sensor according to claim 1 is realized, it is characterised in that described
Temperature detecting unit (2) include N number of temperature sensor (2-1) and flexible fixed shell (2-2), N is more than or equal to 10
Integer；
The databases of industrial computer (4) contain the positional information corresponding to each temperature sensor (2-1),
Along on flexible fixed shell (2-2) length direction, N number of temperature sensor (2-1) is equidistantly solid successively from low to high
On the inwall for being scheduled on flexible fixed shell (2-2), section temperature chain is formed, and the data-signal of N number of temperature sensor (2-1) is defeated
Go out end to be connected with the data signal input of digital collection transducing unit (3) by bus,
The sealed bottom of flexible fixed shell (2-2), and the flexible fixed shell (2-2) is in protecting tube (1).
3. the liquid level detection system that a kind of use temperature sensor according to claim 2 is realized, it is characterised in that described
Section temperature chain length and the equal length of flexible fixed shell (2-2).
4. the liquid level detection system that a kind of use temperature sensor according to claim 2 is realized, it is characterised in that described
Flexible fixed shell (2-2) length leveled off to the length of protecting tube (1) it is equal.
5. the liquid level detection system that a kind of use temperature sensor according to claim 2 is realized, it is characterised in that described
Flexible fixed shell (2-2) bottom be provided with sharp portion.
6. the liquid level detection system that a kind of use temperature sensor according to claim 2 is realized, it is characterised in that described
Protecting tube (1) be made up of dismountable multistage sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317612.7A CN107091667A (en) | 2017-05-08 | 2017-05-08 | The liquid level detection system that a kind of use temperature sensor is realized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317612.7A CN107091667A (en) | 2017-05-08 | 2017-05-08 | The liquid level detection system that a kind of use temperature sensor is realized |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091667A true CN107091667A (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710317612.7A Pending CN107091667A (en) | 2017-05-08 | 2017-05-08 | The liquid level detection system that a kind of use temperature sensor is realized |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007527A (en) * | 2017-11-23 | 2018-05-08 | 重庆多邦科技股份有限公司 | A kind of differential pressure water level measurement system |
| CN108332818A (en) * | 2018-01-29 | 2018-07-27 | 华孚油气工程技术成都有限公司 | A kind of crude oil stands drain sump emulsion layer fluid level measuring device and measurement method |
| CN108344465A (en) * | 2018-02-13 | 2018-07-31 | 广东吉米有品智能科技有限公司 | Method and device for measuring liquid level based on liquid temperature |
| CN109084834A (en) * | 2018-07-05 | 2018-12-25 | 东北大学 | It is a kind of suitable for titanium sponge reduction reaction liquid level and temperature measuring device |
| CN112384775A (en) * | 2018-07-05 | 2021-02-19 | 恩德莱斯+豪瑟尔韦泽尔有限商业两合公司 | Thermometer with diagnostic function |
| CN113841534A (en) * | 2021-09-15 | 2021-12-28 | 永春永发沉香农业专业合作社 | Agilawood seedling cultivation system capable of monitoring root system temperature and monitoring method |
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| CN102706404A (en) * | 2012-05-25 | 2012-10-03 | 中国石油化工股份有限公司 | Oil-water interface detection device and method for crude oil setting tank of oil field multi-purpose station |
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| CN202221329U (en) * | 2011-09-20 | 2012-05-16 | 成都盛杰低温设备有限公司 | Low temperature liquid level sensor component |
| CN102706404A (en) * | 2012-05-25 | 2012-10-03 | 中国石油化工股份有限公司 | Oil-water interface detection device and method for crude oil setting tank of oil field multi-purpose station |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007527A (en) * | 2017-11-23 | 2018-05-08 | 重庆多邦科技股份有限公司 | A kind of differential pressure water level measurement system |
| CN108332818A (en) * | 2018-01-29 | 2018-07-27 | 华孚油气工程技术成都有限公司 | A kind of crude oil stands drain sump emulsion layer fluid level measuring device and measurement method |
| CN108344465A (en) * | 2018-02-13 | 2018-07-31 | 广东吉米有品智能科技有限公司 | Method and device for measuring liquid level based on liquid temperature |
| CN109084834A (en) * | 2018-07-05 | 2018-12-25 | 东北大学 | It is a kind of suitable for titanium sponge reduction reaction liquid level and temperature measuring device |
| CN109084834B (en) * | 2018-07-05 | 2020-08-07 | 东北大学 | Liquid level and temperature measuring device suitable for titanium sponge reduction reaction |
| CN112384775A (en) * | 2018-07-05 | 2021-02-19 | 恩德莱斯+豪瑟尔韦泽尔有限商业两合公司 | Thermometer with diagnostic function |
| US11662255B2 (en) | 2018-07-05 | 2023-05-30 | Endress+Hauser Wetzer Gmbh+Co. Kg | Thermometer having a diagnostic function |
| CN113841534A (en) * | 2021-09-15 | 2021-12-28 | 永春永发沉香农业专业合作社 | Agilawood seedling cultivation system capable of monitoring root system temperature and monitoring method |
| CN113841534B (en) * | 2021-09-15 | 2022-08-12 | 永春永发沉香农业专业合作社 | Agilawood seedling cultivation system capable of monitoring root system temperature and monitoring method |
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Application publication date: 20170825 |
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