CN206496810U - A kind of liquid ammonia storage tank level monitoring device - Google Patents
A kind of liquid ammonia storage tank level monitoring device Download PDFInfo
- Publication number
- CN206496810U CN206496810U CN201720204168.3U CN201720204168U CN206496810U CN 206496810 U CN206496810 U CN 206496810U CN 201720204168 U CN201720204168 U CN 201720204168U CN 206496810 U CN206496810 U CN 206496810U
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- China
- Prior art keywords
- storage tank
- liquid ammonia
- ammonia storage
- detection module
- guiding pipe
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 197
- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 71
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 229910021529 ammonia Inorganic materials 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 6
- 230000001960 triggered effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a kind of liquid ammonia storage tank level monitoring device, including liquid ammonia storage tank, detection means and control device, the bottom of the liquid ammonia storage tank is provided with lower pressure guiding pipe, pressure guiding pipe is provided with the top of the liquid ammonia storage tank, the first valve is provided with the lower pressure guiding pipe, the second valve is provided with the upper pressure guiding pipe, the detection means includes temperature detecting unit, gas density detection module and fluid density detection module, and differential pressure transmitter, the control device includes controller and parameter input unit, the output of the controller is terminated with display table.The utility model is simple in construction, it is reasonable in design, detection is quick, accurately and reliably, differential pressure transmitter is compensated by gas density detection module and fluid density detection module, it is ensured that liquid ammonia storage tank level gauging is accurate, by setting temperature detecting module, avoid liquid ammonia storage tank overheat from the increase of liquid ammonia storage tank internal pressure is triggered blast, improve liquid ammonia storage tank security.
Description
Technical field
The utility model belongs to liquid ammonia storage tank level monitoring technical field, and in particular to a kind of liquid ammonia storage tank level monitoring dress
Put.
Background technology
Liquid ammonia storage tank level gauging widely used differential pressure transmitter is measured.The malleation side flange and liquefied ammonia of differential pressure transmitter
Tank bottom (liquefied ammonia) sampling flange is connected, negative pressure side flange and liquid ammonia storage tank top (ammonia) sampling method of differential pressure transmitter
Orchid is connected, and differential pressure is with liquid ammonia storage tank liquid level direct proportionality between differential pressure transmitter positive/negative-pressure, and liquid level measuring system is by surveying
Amount upper and lower part samples the differential pressure between flange to measure the size of liquid ammonia storage tank liquid level.Current liquid ammonia storage tank measuring system one
As only measured by barrier film differential pressure transmitter, barrier film differential pressure transmitter output current signal is converted into liquid level signal and completes liquid
Ammonia liquid level measurement, but the density and liquid ammonia storage tank top ammonia of the liquid level of liquid ammonia storage tank and liquid ammonia storage tank bottom liquefied ammonia
Density is relevant, and the density of liquid ammonia storage tank bottom liquefied ammonia and the density of liquid ammonia storage tank top ammonia are affected by temperature greatly, work as liquefied ammonia
When tank temperature changes, liquid ammonia storage tank level gauging produces measurement error, and vary with temperature it is larger, liquefied ammonia and ammonia
Larger change can occur for density, so that the error of liquid level is also larger.Therefore, nowadays lack a kind of simple in construction, cost it is low,
Liquid ammonia storage tank level monitoring device reasonable in design, is become by gas density detection module and fluid density detection module to differential pressure
Device is sent to compensate, it is ensured that liquid ammonia storage tank level gauging is accurate, by setting temperature detecting module, it is to avoid liquid ammonia storage tank overheat makes
The increase of liquid ammonia storage tank internal pressure triggers blast, improves the security of liquid ammonia storage tank storage.
Utility model content
Technical problem to be solved in the utility model is that there is provided a kind of liquefied ammonia for above-mentioned deficiency of the prior art
Tank level monitor device, its is simple in construction, reasonable in design, and detection is quick, accurately and reliably, by gas density detection module and
Fluid density detection module is compensated to differential pressure transmitter, it is ensured that liquid ammonia storage tank level gauging is accurate, by setting temperature to examine
Survey module, it is to avoid liquid ammonia storage tank overheat makes the increase of liquid ammonia storage tank internal pressure trigger blast, improve liquid ammonia storage tank security, it is practical
Property it is strong, be easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of liquid ammonia storage tank level monitoring dress
Put, it is characterised in that：Detection means including liquid ammonia storage tank, on liquid ammonia storage tank and the control being connected with the detection means
Device processed, the bottom of the liquid ammonia storage tank, which is provided with the top of lower pressure guiding pipe, the liquid ammonia storage tank, is provided with pressure guiding pipe, described
It is provided with lower pressure guiding pipe on the first valve, the upper pressure guiding pipe and is provided with the second valve, the detection means includes being arranged on
Temperature detecting unit at the top of liquid ammonia storage tank, the gas density detection module installed in liquid ammonia storage tank inside upper part and installed in liquid
The fluid density detection module of ammonia tank inside bottom, and the differential pressure being connected between the lower pressure guiding pipe and the upper pressure guiding pipe
Transmitter, the control device includes controller and the parameter input unit being connected with controller, the output end of the controller
Display table is connected to, first valve and the second valve are controlled by controller, the temperature detecting unit, gas density inspection
Module, fluid density detection module and differential pressure transmitter is surveyed to be connected with controller.
A kind of above-mentioned liquid ammonia storage tank level monitoring device, it is characterised in that：The detection means also includes liquefied ammonia and revealed
Detection sensor, the liquefied ammonia leak detection sensor is arranged on the outside of liquid ammonia storage tank, the liquefied ammonia leak detection sensor with
Controller is connected.
A kind of above-mentioned liquid ammonia storage tank level monitoring device, it is characterised in that：The control device also includes RS485 and communicated
Interface module, the gas density detection module is connected by RS485 communication interface modules with controller.
A kind of above-mentioned liquid ammonia storage tank level monitoring device, it is characterised in that：The gas density detection module is SDM gas
Volume density sensor；The fluid density detection module is condenser type liquid density sensor.
A kind of above-mentioned liquid ammonia storage tank level monitoring device, it is characterised in that：The temperature detecting unit includes PT100 temperature
Degree sensor and the A/D modular converters being connected with the PT100 temperature sensors output end.
A kind of above-mentioned liquid ammonia storage tank level monitoring device, it is characterised in that：The negative pressure chamber side of the differential pressure transmitter with
The lower pressure guiding pipe connection, the plemum side of the differential pressure transmitter is connected with the upper pressure guiding pipe.
The utility model has advantages below compared with prior art：
1st, the utility model, simple in construction, reasonable in design and input cost is relatively low, detection is convenient and accuracy is high.
2nd, the utility model is used detection means and control device, detect and accurately and reliably, are become by differential pressure in real time
Send device to detect malleation chamber pressure and negative pressure chamber pressure in differential pressure transmitter and obtain pressure difference, by fluid density detection module to liquid
The liquefied ammonia density of ammonia tank inside bottom detected in real time, ammonia of the gas density detection module to liquid ammonia storage tank inside upper part
Density is detected in real time, and the pressure difference collected, liquefied ammonia density and ammonia density are sent into the controller into control device,
Controller so as to obtain the liquid level of liquid ammonia storage tank, considers pressure difference, liquefied ammonia density and ammonia density comprehensive analysis processing
The relation of the ammonia density of the liquefied ammonia density and liquid ammonia storage tank top of liquid ammonia storage tank liquid level and liquid ammonia storage tank bottom, makes liquid ammonia storage tank
Level gauging result is more accurate.
3rd, the utility model is by setting temperature detecting unit to detect the temperature of liquid ammonia storage tank in real time, when temperature is super
When crossing maximum temperature setting value, controller control display table is shown to staff's prompting, it is to avoid liquid ammonia storage tank overheat makes liquefied ammonia
Tank internal pressure increase triggers blast, improves the security of liquid ammonia storage tank storage.
In summary, the utility model is simple in construction, reasonable in design, and detection is quick, accurately and reliably, is examined by gas density
Survey module and fluid density detection module is compensated to differential pressure transmitter, it is ensured that liquid ammonia storage tank level gauging is accurate, by setting
Put temperature detecting module, it is to avoid liquid ammonia storage tank overheat makes the increase of liquid ammonia storage tank internal pressure trigger blast, improve liquid ammonia storage tank peace
Quan Xing, it is practical, it is easy to promote the use of.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Description of reference numerals:
1-liquid ammonia storage tank；2-differential pressure transmitter；3-the first valve；
4-the second valve；5-temperature detecting unit；6-RS485 communication interface modules；
7-gas density detection module；8-fluid density detection module；
9-liquefied ammonia leak detection sensor；10-controller；11-display table；
12-parameter input unit.
Embodiment
As depicted in figs. 1 and 2, the utility model include liquid ammonia storage tank 1, the detection means on liquid ammonia storage tank 1 and
The control device being connected with the detection means, the bottom of the liquid ammonia storage tank 1 is provided with lower pressure guiding pipe, the liquid ammonia storage tank 1
Top be provided with pressure guiding pipe, the lower pressure guiding pipe and be provided with the first valve 3, be provided with the second valve on the upper pressure guiding pipe
Door 4, the detection means is including being arranged on the temperature detecting unit 5 at the top of liquid ammonia storage tank 1, on the inner side of liquid ammonia storage tank 1
The gas density detection module 7 in portion and the fluid density detection module 8 installed in the inside bottom of liquid ammonia storage tank 1, and be connected to
Differential pressure transmitter 2 between the lower pressure guiding pipe and the upper pressure guiding pipe, the control device includes controller 10 and and controller
The parameter input unit 12 of 10 connections, the output of the controller 10 is terminated with display table 11, the valve of the first valve 3 and second
Door 4 is controlled by controller 10, the temperature detecting unit 5, gas density detection module 7, the and of fluid density detection module 8
Differential pressure transmitter 2 is connected with controller 10.
In the present embodiment, by setting the first valve 3 and the second valve 4, when needing to detect the liquid level of liquid ammonia storage tank 1,
Controller 10 controls the first valve 3 and the second valve 4 to open, and is carried out when the liquid level that should not detect liquid ammonia storage tank or to liquid ammonia storage tank
During maintenance, controller 10 controls the first valve 3 and the second valve 4 to close, and is easy to detection and maintenance.
In the present embodiment, the detection means also includes liquefied ammonia leak detection sensor 9, the liquefied ammonia leak detection sensing
Device 9 is arranged on the outside of liquid ammonia storage tank 1, and the liquefied ammonia leak detection sensor 9 is connected with controller 10.
In the present embodiment, by setting liquefied ammonia leak detection sensor 9 to detect whether the liquefied ammonia in liquid ammonia storage tank 1 is let out in real time
Dew, when the liquefied ammonia leakage in liquid ammonia storage tank 1, liquefied ammonia leak detection sensor 9 detects liquefied ammonia signal and sends out liquefied ammonia signal
Controller 1 is delivered to, the control of controller 1 shows that table 11 shows liquefied ammonia leakage, reminded to staff, it is to avoid ammonia leakage causes people
Member's accident.
In the present embodiment, the control device also includes RS485 communication interface modules 6, the gas density detection module 7
It is connected by RS485 communication interface modules 6 with controller 10.
In the present embodiment, the gas density detection module 7 is SDM Gas Density Sensors；The fluid density detection
Module 8 is condenser type liquid density sensor.
In the present embodiment, the temperature detecting unit 5 include PT100 temperature sensors and with the PT100 TEMPs
The A/D modular converters of device output end connection.
In the present embodiment, further preferably, the A/D modular converters are ADAM4018+ modules, the PT100 temperature
Sensor connects with the ADAM4018+ modules, and the ADAM4018+ modules are the analog input moulds of 16 8 passages
Block, the temperature signal analog quantity that the PT100 temperature sensors are detected is converted to temperature signal digital quantity and is sent to control
Device 10, controller 10 receives temperature signal digital quantity record and preservation, efficiency high automatically.
In the present embodiment, the negative pressure chamber side of the differential pressure transmitter 2 is connected with the lower pressure guiding pipe, the differential pressure transmitter
2 plemum side is connected with the upper pressure guiding pipe.
The utility model by parameter input unit 12 in use, preset maximum temperature setting value, when detection liquefied ammonia
During the liquid level of storage tank 1, controller 10 controls the first valve 3 and the second valve 4 to open, and differential pressure is detected by differential pressure transmitter 2
Malleation chamber pressure and negative pressure chamber pressure obtain pressure difference in transmitter 2, and the pressure difference collected is sent to controller 10, pass through liquid
Volume density detection module 8 detected in real time to the liquefied ammonia density of the inside bottom of liquid ammonia storage tank 1, and by the liquefied ammonia density collected
Send to controller 10, gas density detection module 7 is detected in real time to the ammonia density of the inside upper part of liquid ammonia storage tank 1, and
The ammonia density collected is sent to controller 10, controller 10 is comprehensive by the pressure difference received, liquefied ammonia density and ammonia density
Analyzing and processing is closed, so as to obtain the liquid level of liquid ammonia storage tank 1, liquid level and the bottom of liquid ammonia storage tank 1 of liquid ammonia storage tank 1 has been considered
The relation of liquefied ammonia density and the ammonia density on the top of liquid ammonia storage tank 1, makes the level gauging result of liquid ammonia storage tank 1 more accurate；Temperature
Detection unit 5 is detected in real time to the temperature of liquid ammonia storage tank 1, and the temperature collected is sent to controller 10, controller
10 are compared the temperature received with maximum temperature setting value, when the temperature that temperature detecting unit 5 is detected exceedes maximum
During desired temperature, the control display of controller 10 table 11 is shown to staff and reminds the reduction liquid ammonia storage tank 1 that takes measures in advance
Temperature, it is to avoid the overheat of liquid ammonia storage tank 1 makes the increase of the internal pressure of liquid ammonia storage tank 1 trigger blast, improves the safety of liquid ammonia storage tank storage
Property.The monitoring device is simple in construction, reasonable in design, and detection is quick, accurately and reliably, it is ensured that liquid ammonia storage tank level gauging is accurate, and
The security of liquid ammonia storage tank storage is improved, it is practical.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (6)
1. a kind of liquid ammonia storage tank level monitoring device, it is characterised in that：Including liquid ammonia storage tank (1), on liquid ammonia storage tank (1)
Detection means and the control device that is connected with the detection means, the bottom of the liquid ammonia storage tank (1) is provided with lower pressure guiding pipe,
Be provided with the top of the liquid ammonia storage tank (1) on pressure guiding pipe, the lower pressure guiding pipe and be provided with the first valve (3), it is described on draw
The second valve (4) is provided with pressure pipe, the detection means includes being arranged on the temperature detecting unit at the top of liquid ammonia storage tank (1)
(5), installed in the gas density detection module (7) of liquid ammonia storage tank (1) inside upper part and installed in liquid ammonia storage tank (1) inside bottom
Fluid density detection module (8), and the differential pressure transmitter (2) being connected between the lower pressure guiding pipe and the upper pressure guiding pipe,
The control device includes controller (10) and the parameter input unit (12) being connected with controller (10), the controller (10)
Output be terminated with display table (11), first valve (3) and the second valve (4) are controlled by controller (10), described
Temperature detecting unit (5), gas density detection module (7), fluid density detection module (8) and differential pressure transmitter (2) with control
Device (10) connection processed.
2. according to a kind of liquid ammonia storage tank level monitoring device described in claim 1, it is characterised in that：The detection means is also wrapped
Liquefied ammonia leak detection sensor (9) is included, the liquefied ammonia leak detection sensor (9) is arranged on the outside of liquid ammonia storage tank (1), the liquid
Ammonia leak detection sensor (9) is connected with controller (10).
3. according to a kind of liquid ammonia storage tank level monitoring device described in claim 1 or 2, it is characterised in that：The control device
Also include RS485 communication interface modules (6), the gas density detection module (7) by RS485 communication interface modules (6) with
Controller (10) is connected.
4. according to a kind of liquid ammonia storage tank level monitoring device described in claim 1 or 2, it is characterised in that：The gas density
Detection module (7) is SDM Gas Density Sensors；The fluid density detection module (8) is condenser type liquid density sensor.
5. according to a kind of liquid ammonia storage tank level monitoring device described in claim 1 or 2, it is characterised in that：The temperature detection
Unit (5) includes PT100 temperature sensors and the A/D modular converters being connected with the PT100 temperature sensors output end.
6. according to a kind of liquid ammonia storage tank level monitoring device described in claim 1 or 2, it is characterised in that：The differential pressure transporting
The negative pressure chamber side of device (2) is connected with the lower pressure guiding pipe, and the plemum side of the differential pressure transmitter (2) connects with the upper pressure guiding pipe
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720204168.3U CN206496810U (en) | 2017-03-03 | 2017-03-03 | A kind of liquid ammonia storage tank level monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720204168.3U CN206496810U (en) | 2017-03-03 | 2017-03-03 | A kind of liquid ammonia storage tank level monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206496810U true CN206496810U (en) | 2017-09-15 |
Family
ID=59806218
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720204168.3U Expired - Fee Related CN206496810U (en) | 2017-03-03 | 2017-03-03 | A kind of liquid ammonia storage tank level monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206496810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210369A (en) * | 2018-11-06 | 2019-01-15 | 长春汽四环腾达油脂化工有限公司 | One kind filling ammonia system |
-
2017
- 2017-03-03 CN CN201720204168.3U patent/CN206496810U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210369A (en) * | 2018-11-06 | 2019-01-15 | 长春汽四环腾达油脂化工有限公司 | One kind filling ammonia system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170915 |