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 PDF

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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
Authority
CN
China
Prior art keywords
temperature
liquid level
temperature sensor
protecting tube
tank body
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.)
Pending
Application number
CN201710317612.7A
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Chinese (zh)
Inventor
张庆徽
张湘玲
姚坤澎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Gongda Xingke Electronic Technology Co Ltd
Original Assignee
Harbin Gongda Xingke Electronic Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin Gongda Xingke Electronic Technology Co Ltd filed Critical Harbin Gongda Xingke Electronic Technology Co Ltd
Priority to CN201710317612.7A priority Critical patent/CN107091667A/en
Publication of CN107091667A publication Critical patent/CN107091667A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/80Arrangements for signal processing
    • G01F23/802Particular electronic circuits for digital processing equipment
    • G01F23/804Particular electronic circuits for digital processing equipment containing circuits handling parameters other than liquid level

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

The liquid level detection system that a kind of use temperature sensor is realized
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.
CN201710317612.7A 2017-05-08 2017-05-08 The liquid level detection system that a kind of use temperature sensor is realized Pending CN107091667A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
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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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
CN102928043A (en) * 2012-10-30 2013-02-13 东南大学 Material level detection method based on linear array temperature sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102928043A (en) * 2012-10-30 2013-02-13 东南大学 Material level detection method based on linear array temperature sensor

Cited By (9)

* Cited by examiner, † Cited by third party
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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