CN106706069A - Ammonia mother liquid barrel liquid level measuring system - Google Patents
Ammonia mother liquid barrel liquid level measuring system Download PDFInfo
- Publication number
- CN106706069A CN106706069A CN201510794867.3A CN201510794867A CN106706069A CN 106706069 A CN106706069 A CN 106706069A CN 201510794867 A CN201510794867 A CN 201510794867A CN 106706069 A CN106706069 A CN 106706069A
- Authority
- CN
- China
- Prior art keywords
- liquid level
- ammonia mother
- measuring system
- heating tube
- level measuring
- 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
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000007788 liquid Substances 0.000 title claims abstract description 61
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims description 19
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000012452 mother liquor Substances 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- 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
- G01F23/14—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 by measurement of pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
An ammonia mother liquid barrel liquid level measuring system comprises a single-flange liquid level transmitter and is characterized by further comprising a DCS control system and a heating device. An output end of the DCS control system is connected with the heating device, an input end of the DCS control system is connected with a thermal resistor, and the thermal resistor is arranged on the outer side of a connection pipe connected with the single-flange liquid level transmitter. By the heating device for heating the connection pipe, a non-frozen state of ammonia mother liquid is guaranteed, frosting of the ammonia mother liquid at a diaphragm of the single-flange liquid level transmitter at a low temperature is avoided, effectiveness of the single-flange liquid level transmitter in liquid level measurement of the ammonia mother liquid is guaranteed, mother liquid leakage is avoided, and accordingly harms to personnel and equipment are avoided. Starting and stopping of the heating device are controlled by the DCS control system, automatic control in heating of the connection pipe is realized, and equipment can be maintained by workers conveniently.
Description
Technical field
The present invention relates to liquid level emasuring device in a kind of soda manufacture, more particularly to a kind of ammonia mother vat liquid level is surveyed
Amount protection system.
Background technology
Fluid level transmitter is a kind of in-situ transducer being directly installed on pipeline or container.Due to isolation diaphragm
Directly it is in contact with liquid medium, is drawn with connecting pipe without by positive pressure side, therefore high temperature, height can be measured
Viscosity, easily crystallization, the easily liquid level of precipitation and the medium such as deep-etching, pressure and density, it is then converted into 4~
20mA.DC signal outputs.
During soda manufacture, the mother liquor in ammonia mother vat once leaks, and will cause the damage of personnel and equipment.
The current measurement to liquid level commonly uses single flange liquid level transmission device and measures.Single flange liquid level transmission device is
According to pressure sensitive principle, the height of current liquid is calculated by the change of the densitometer pressure of liquid,
But when running in winter, due to mother liquor, usually frosting at transducer diaphragm, causes the liquid level cannot to this kind of transmitter
Measurement, can carry out great hidden danger to the continuous operation of production and safety belt.
In order to solve this problem, when designing a kind of low temperature can normal work liquid level emasuring device, it is ensured that it is raw
The normal operation and equipment, personal safety produced.
The content of the invention
The present invention provides a kind of ammonia mother vat liquid level measuring system, it is therefore an objective to solve prior art problem, there is provided
It is a kind of will not frosting causes what liquid level cannot be measured at the diaphragm of fluid level transmitter due to mother liquor when temperature is low
Liquid level measuring system, the system solves problem of the prior art well.
The technical scheme that solve problem of the present invention is used is：
Ammonia mother vat liquid level measuring system, comprising single flange liquid level transmission device, also including DCS control systems and plus
Thermal.The DCS control systems output end connects heater, input connection thermal resistor, thermal resistance
It is arranged on the adapter outside being connected with single flange liquid level transmission device.
The heater is heater strip, and heater strip is arranged on adapter outside or is taken over around being located at.
The heater is heating tube, and steam electromagnetic valve is arranged on the admission end of heating tube, heating tube
Exhaust steam end is provided with condensate drain valve, and wherein steam electromagnetic valve is connected with DCS control system output ends, and steam electricity
Heating tube portion between magnet valve and condensate drain valve is arranged on the adapter outside being connected with single flange liquid level transmission device
Or in adapter.
Two branch roads of the heating tube of parallel connection, two friendships of branch road are provided between steam electromagnetic valve and condensate drain valve
Connect position and be provided with threeway or triple valve, at least one branch road is arranged in adapter outside or adapter.
One of branch road around be located at adapter on.
The heating tube is carbon steel pipe.
Beneficial effects of the present invention：
1. firing equipment is provided with (as passed through heating tube or electrical heating using high steam in adapter in the present invention
Silk) butt tube heated, it is ensured that and ammonia mother liquor is in non-frozen state, it is to avoid ammonia mother liquor exists when temperature is low
Frosting at the diaphragm of single flange liquid level transmission device, it is ensured that it is female that single flange liquid level transmission device can effectively measure ammonia
The liquid level of liquid, it is to avoid mother liquor leaks, and then avoids causing the damage of personnel and equipment.
2. the unlatching of firing equipment controlled by DCS control systems in the present invention, closed, realize butt tube
The Automated condtrol of heating, while facilitating staff to repair equipment.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is structural representation of the invention two.
In figure：100. ammonia mother vats, 1. single flange liquid level transmission device, 2.DCS control systems, 3. heater strip,
5. thermal resistance, 6. adapter；30. steam electromagnetic valves, 40. heating tubes, 41. heating tube branch roads, 50. condensate drain valves,
60. threeways, 70. triple valves.
Specific embodiment
The present invention is described in further details below in conjunction with the drawings and specific embodiments.
Embodiment 1
Ammonia mother vat liquid level measuring system as shown in Figure 1, comprising single flange liquid level transmission device 1, DCS
Control system 2 and heater, the heater used in the present embodiment are heater strip 3, are a kind of electrical heating
Device.The output end of DCS control systems 2 connects heater strip 3, input connection thermal resistor 5.Due to this
The purpose of measuring system is to ensure that the low temperature condition flange liquid level transmission device 1 that places an order can also work, i.e., to ensure
Ammonia mother liquor is in non-frozen state, and single flange liquid level transmission device 1 is by adapter 6 and ammonia mother liquor when using
Bucket 100 is connected with each other, therefore thermal resistance 5 is arranged on the outside of adapter 6, is used to detect ammonia mother liquor peripheral environment
Temperature, it is ensured that ammonia mother liquor does not freeze.
The effect of above-mentioned heater in order to be heated to ammonia mother liquor, to avoid ammonia mother liquor from freezing, Ke Yishe
Put in the outside of adapter 6, it is also possible to be set directly in adapter 6, how to set depending on using which kind of heating
Device.Electric heater unit is except the heater strip in the present embodiment, it is also possible to according to circumstances using any applicable
Electric heater unit.It is heater that heating wire 3 is used in the present embodiment, one be it is with low cost, two be can
It is wrapped in adapter 6 with by heater strip, effectively ammonia mother liquor is heated.
Specific work process is as described below：Thermal resistance 5 detects the environment temperature of adapter 6, and temperature data is transmitted
To in DCS control systems, what a temperature value is previously set in DCS control systems, when less than setting
During temperature value, i.e., when ammonia mother liquor will freeze, DCS control systems control heater strip 3 is heated, ammonia mother liquor
Liquid body is maintained at, single flange liquid level transmission device 1 being capable of normal work.When the temperature value higher than setting,
When there is accident to avoid ammonia mother liquor temperature too high, DCS control systems control heater strip 3 stops heating.It is whole
Individual system is automatically controlled by DCS control systems, not only effectively solves single flange liquid level transmission device in the winter
The problem of cisco unity malfunction, also achieves automated production under the low temperature conditions such as season.
Embodiment 2
Ammonia mother vat liquid level measuring system as shown in Figure 2, in addition to heater difference, miscellaneous part is equal
Identical, the heater in the present embodiment is heating tube, concrete structure：Comprising single flange liquid level transmission device 1,
DCS control systems 2, the one end of DCS control systems 2 connection steam electromagnetic valve 30, other end connection thermal resistor 5.
The steam electromagnetic valve 30 is arranged on the admission end of heating tube 40, and the exhaust steam end of heating tube 40 is provided with condensate drain
Valve 50, being arranged on for heating tube portion between steam electromagnetic valve 30 and condensate drain valve 50 becomes with single flange liquid level
Send on the outside of adapter 6 or adapter 6 that device 1 is connected, thermal resistance 5 is arranged on the outside of adapter 6.
In order to preferably be heated to ammonia mother liquor, in steam electromagnetic valve 30 and condensate drain valve 50 in the present embodiment
Between be provided with two branch roads of the heating tube of parallel connection 41, one of branch road 41 is another around being located in adapter 6
Individual branch road 41 is arranged on the outside of adapter 6, and threeway 60 is provided with two delivery positions of heating tube branch road 41 one,
Another place is provided with triple valve 70.
Due to being heated to ammonia mother liquor using high-temperature steam in the present embodiment, and in order to preferably by heating tube
Around being located in adapter 6, heating tube uses carbon steel pipe.
Thermal resistance 5 and the composition thermostat unit of steam electromagnetic valve 30, high-temperature steam pass through thermostat unit
It is connected with DCS control systems 2 by communication line, through the good humidity control system of DCS set-up of control system
After open or close steam electromagnetic valve 30, heat tracing is carried out to flange liquid level transmission device 1 and adapter 6, it is ensured that ammonia
Mother liquor is in non-frozen state, flange liquid level transmission device 1 is measured liquid level.
During initial launch, the condensate liquid in the discharge line of condensate drain valve 50 is opened, be then shut off condensate drain valve 50.Heat
The temperature that resistance 5 is detected is less than the setting value of DCS control systems 2, is controlled automatically by DCS control systems 2
Steam electromagnetic valve 30 is opened in system output, and high-temperature steam is conveyed in the pipeline to heating tube 40, and flange liquid level is become
Device 1, ammonia mother liquor, adapter 6 is sent to be heated, after thermal resistance 5 detects temperature reaches setting value, by
DCS control systems 2 automatically control steam off magnetic valve 30, are carried out by the high-temperature steam retained in heating tube
Heat tracing.When below temperature drop to setting value, DCS control systems controlled output opens steam electromagnetic valve 30
Setting value is heated to heating tube conveying steam, is carried out with this rule later.
The advantage of this scheme is to be capable of achieving the automatic heating to pipeline, it is ensured that transmitter can accurately be determined
Level value；Personnel can be maintained easily to safeguard faulty meter (transmitter).When needing to safeguard, only
Need to by operating DCS control system steam off magnetic valves, after just operable after temperature drop, it is to avoid length
Pipeline of the phase after steam is heated easily scalds attendant in the condition of high temperature.Meanwhile, it is automatic right to be capable of achieving
The heat tracing of pipeline and instrument, thermal resistance is detected after temperature is less than setting value and just can set by DCS control systems
Put and automatically open up steam electromagnetic valve heating, heating is just stopped after reaching setting value, treat temperature drop to setting value
After be again started up steam heating.
Claims (6)
1. ammonia mother vat liquid level measuring system, comprising single flange liquid level transmission device, it is characterised in that：Also include DCS
Control system and heater；The DCS control systems output end connects heater, input connection heat
Resistance, thermal resistance is arranged on the adapter outside being connected with single flange liquid level transmission device.
2. ammonia mother vat liquid level measuring system as described in claim 1, it is characterised in that：The heater
It is heater strip, heater strip is arranged on adapter outside or is taken over around being located at.
3. ammonia mother vat liquid level measuring system as described in claim 1, it is characterised in that：The heater
It is heating tube, steam electromagnetic valve is arranged on the admission end of heating tube, the exhaust steam end of heating tube is provided with condensate drain valve,
Wherein steam electromagnetic valve is connected with DCS control system output ends, and between steam electromagnetic valve and condensate drain valve
Heating tube portion be arranged on be connected with single flange liquid level transmission device adapter outside or take on.
4. ammonia mother vat liquid level measuring system as described in claim 3, it is characterised in that：In steam electromagnetic valve
Be provided with two branch roads of the heating tube of parallel connection and condensate drain valve between, the delivery position of two branch roads be provided with threeway or
Triple valve, at least one branch road is arranged in adapter outside or adapter.
5. ammonia mother vat liquid level measuring system as described in claim 4, it is characterised in that：One of branch road
Taken over around being located at.
6. ammonia mother vat liquid level measuring system as described in claim 3, it is characterised in that：The heating tube is
Carbon steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510794867.3A CN106706069A (en) | 2015-11-18 | 2015-11-18 | Ammonia mother liquid barrel liquid level measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510794867.3A CN106706069A (en) | 2015-11-18 | 2015-11-18 | Ammonia mother liquid barrel liquid level measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106706069A true CN106706069A (en) | 2017-05-24 |
Family
ID=58932280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510794867.3A Pending CN106706069A (en) | 2015-11-18 | 2015-11-18 | Ammonia mother liquid barrel liquid level measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106706069A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253775A (en) * | 2018-11-22 | 2019-01-22 | 佛山高富中石油燃料沥青有限责任公司 | A kind of transition apparatus of high-viscosity high-elasticity chemical liquor and easy coking level gauging |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441485A (en) * | 2007-11-19 | 2009-05-27 | 中国石化扬子石油化工有限公司 | Temperature control method of mother liquor pipeline conveying of slurry method HDPE apparatus |
| DE102008031645A1 (en) * | 2008-07-04 | 2010-01-14 | Continental Automotive Gmbh | Liquid level sensor for sensing liquid level sensor of tank, has withdrawal pipe for withdrawing fluid from tank, and has controlling and evaluating device |
| CN201574089U (en) * | 2009-11-20 | 2010-09-08 | 重庆泰丰泰兴化工有限责任公司 | Ammonia recovery reboiler |
| CN102564514A (en) * | 2012-02-10 | 2012-07-11 | 北京中油联自动化技术开发有限公司 | Electronic fusion measurement liquid level transmitter and measurement method thereof |
| CN203061028U (en) * | 2012-07-23 | 2013-07-17 | 江苏晋煤恒盛化工股份有限公司 | Liquid level measurement device for decarburization tower |
| CN203090744U (en) * | 2013-03-28 | 2013-07-31 | 成都锐思环保技术有限责任公司 | Steam direct-heating liquid ammonia evaporation process control system for flue gas denitration |
| CN203346361U (en) * | 2013-05-21 | 2013-12-18 | 河北钢铁股份有限公司唐山分公司 | Device for extracting desulfuration foam with coking wet method |
| CN103979575A (en) * | 2014-05-16 | 2014-08-13 | 北京博智伟德环保科技有限公司 | System and control method for producing ammonia gas by hydrolyzing urea solution |
| CN203811232U (en) * | 2014-02-25 | 2014-09-03 | 重庆华彩化工有限责任公司 | Ammonia water level measuring device |
| CN205176695U (en) * | 2015-11-18 | 2016-04-20 | 浙江大学自贡创新中心 | Ammonia mother vat liquid level measurement system |
-
2015
- 2015-11-18 CN CN201510794867.3A patent/CN106706069A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441485A (en) * | 2007-11-19 | 2009-05-27 | 中国石化扬子石油化工有限公司 | Temperature control method of mother liquor pipeline conveying of slurry method HDPE apparatus |
| DE102008031645A1 (en) * | 2008-07-04 | 2010-01-14 | Continental Automotive Gmbh | Liquid level sensor for sensing liquid level sensor of tank, has withdrawal pipe for withdrawing fluid from tank, and has controlling and evaluating device |
| CN201574089U (en) * | 2009-11-20 | 2010-09-08 | 重庆泰丰泰兴化工有限责任公司 | Ammonia recovery reboiler |
| CN102564514A (en) * | 2012-02-10 | 2012-07-11 | 北京中油联自动化技术开发有限公司 | Electronic fusion measurement liquid level transmitter and measurement method thereof |
| CN203061028U (en) * | 2012-07-23 | 2013-07-17 | 江苏晋煤恒盛化工股份有限公司 | Liquid level measurement device for decarburization tower |
| CN203090744U (en) * | 2013-03-28 | 2013-07-31 | 成都锐思环保技术有限责任公司 | Steam direct-heating liquid ammonia evaporation process control system for flue gas denitration |
| CN203346361U (en) * | 2013-05-21 | 2013-12-18 | 河北钢铁股份有限公司唐山分公司 | Device for extracting desulfuration foam with coking wet method |
| CN203811232U (en) * | 2014-02-25 | 2014-09-03 | 重庆华彩化工有限责任公司 | Ammonia water level measuring device |
| CN103979575A (en) * | 2014-05-16 | 2014-08-13 | 北京博智伟德环保科技有限公司 | System and control method for producing ammonia gas by hydrolyzing urea solution |
| CN205176695U (en) * | 2015-11-18 | 2016-04-20 | 浙江大学自贡创新中心 | Ammonia mother vat liquid level measurement system |
Non-Patent Citations (1)
| Title |
|---|
| 吴洪波;陈顺;孟宪锋;: "外测液位仪在液氨球罐上的应用" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253775A (en) * | 2018-11-22 | 2019-01-22 | 佛山高富中石油燃料沥青有限责任公司 | A kind of transition apparatus of high-viscosity high-elasticity chemical liquor and easy coking level gauging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103808377B (en) | Differential pressure type flow measuring system | |
| CN205639956U (en) | Prevent leaking chemical industry gas pipeline flange | |
| CN110595558A (en) | Natural gas flow measurement system self-adaptive to ambient temperature | |
| WO1987004520A1 (en) | Central heating system and water system and method for controlling the tightness thereof | |
| CN103557992A (en) | Method for detecting inner leakage of steam hydrophobic valve based on valve front pipe wall temperature detection | |
| CN104197146A (en) | Pipeline anti-freezing and defreezing device making use of hot air recirculation | |
| CN108072100B (en) | Floor heating pipeline leakage detection device and detection method | |
| CN205176695U (en) | Ammonia mother vat liquid level measurement system | |
| CN203490026U (en) | Source constant temperature preventer of steam pressure transmitter | |
| CN103926069B (en) | Based on the high temperature valve detection experiment device of fuse salt system | |
| CN106706069A (en) | Ammonia mother liquid barrel liquid level measuring system | |
| CN202614004U (en) | Cooling water leakage and blockage detecting device of heating furnace | |
| CN203083727U (en) | Wall temperature detection device for inner leakage of steam drain pipeline | |
| CN207750645U (en) | Intelligent numerical control pipeline oil heater | |
| CN208310858U (en) | Turbine medium-low pressure communication pipe heating system | |
| CN206235430U (en) | A kind of anti-freezing structure of steam pipework device for pressure measurement | |
| CN105807000A (en) | Online chemical instrument standard calibration device and method | |
| CN210464580U (en) | Natural gas flow measurement system self-adaptive to ambient temperature | |
| CN203881524U (en) | High-temperature valve detector based on molten salt system | |
| CN103048201A (en) | Hydrostatic bursting test machine for pipes | |
| CN209165050U (en) | A kind of prefabricated direct-buried thermal insulation pipe leak detecting and alarming device | |
| CN202643308U (en) | Intelligent oil discharging vehicle | |
| CN207472331U (en) | A kind of throttle differential flowmeter | |
| CN205859477U (en) | Defroster for impulse piping system | |
| CN209894496U (en) | Thermal performance detection device for electric heating stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |