CN201434863Y - Automatic protection device of analyzer probe - Google Patents
Automatic protection device of analyzer probe Download PDFInfo
- Publication number
- CN201434863Y CN201434863Y CN2009203044203U CN200920304420U CN201434863Y CN 201434863 Y CN201434863 Y CN 201434863Y CN 2009203044203 U CN2009203044203 U CN 2009203044203U CN 200920304420 U CN200920304420 U CN 200920304420U CN 201434863 Y CN201434863 Y CN 201434863Y
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- Prior art keywords
- sample
- temperature
- water
- sample water
- probe
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- 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.)
- Expired - Lifetime
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- 239000000523 sample Substances 0.000 title claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000000498 cooling water Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 8
- 230000006378 damage Effects 0.000 claims description 7
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000013068 control sample Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an automatic protection device of an analyzer probe, which comprises a process system (2), a heat exchanger (1) and an analyzer (16). One end of a high-temperature sample water pipeline (5) is connected with the process system (2), while the other end is connected with the heat exchanger (1); the high-temperature sample water pipeline (5) is connected with a sample water adjusting valve (6); a cooling water pipeline (8) is connected with the heat exchanger (1); one end of a cooled sample water pipeline (11) is connected with the heat exchanger (1), while the other end is connected with the analyzer (16); and one end of a cooling water return pipeline (13) is connected with the heat exchanger (1). The cooled sample water pipeline (11) is connected with a sample water temperature measuring element (3) which is connected to a temperature controller (4). Through the temperature detection element and the temperature controller, the automatic protection device realizes the automatic control of the cooled sample water temperature, and effectively protects the analyzer probe from being damaged by over temperature. The automatic protection device of the analyzerprobe has the advantages of simple structure, high automation degree, good control sensitivity and the like, and has higher promotion value and broader application prospect.
Description
Technical field
The utility model belongs to the plant equipment field, particularly a kind of analyser probe automatic safety device.
Background technology
In commercial production, many device for flow are gone into the temperature, pressure of solution etc. certain requirement, needs to adopt analyser to monitor in real time.Fluctuate owing to flow into the temperature of solution, and the probe of the main element in the analyser is very fragile, temperature is too high sometimes, just may cause the damage of probe, and the price of a probe is several thousand up to ten thousand yuan, makes the maintenance cost of analytic system very high.
For example the boiler feed water of cogeneration plant requires dissolved oxygen content to be lower than relevant criterion (air suspended type deaerator feedwater dissolved oxygen content≤15 He/L, pressure type deaerator feedwater dissolved oxygen content≤7g/L), the corrosion that will cause to boiler feed water pipeline, economizer and other auxiliary device of boiler water system if exceed standard, when serious, corrosion thinning stove tube and heating surface, can cause danger during operation.In order to ensure that oxygen-eliminating device water outlet dissolved oxygen content can satisfy the boiler requirement, need analyze, monitor the dissolved oxygen content in the water.The line analysis instrument that is mounted in that generally adopts is monitored in real time now.
Dissolved oxygen DO online analytical instrument probe has specific (special) requirements to the temperature of measuring media, can not be higher than specific temperature.The temperature that measuring media often takes place in the prior art surpasses this specified temp, the analytical instrument probe is damaged, thereby cause maintenance cost high, and can't accurately monitor the dissolved oxygen content in the water, also can impact life-span of boiler.
The utility model content
The technical problems to be solved in the utility model:
A kind of simple in structure, safe and reliable analyser probe protective device is provided, and the analytical instrument that causes with the temperature superelevation that solves measuring media in prior art probe damages, and makes maintenance cost high, and the life-span of boiler such as shortens at technical matters.
The technical solution of the utility model is: a kind of analyser probe automatic safety device, it comprises process system, heat interchanger, analyser, high temperature sample waterpipe one end connects process system, the other end connects heat interchanger, be connected with the sample water regulating valve on high temperature sample waterpipe, cooling water pipeline connects heat interchanger, and cooling back sample waterpipe one end connects heat interchanger, the other end connects analyser, and CWR road one end connects heat interchanger; Be connected with sample coolant-temperature gage measuring sensor on sample waterpipe after the cooling, sample coolant-temperature gage measuring sensor is connected in temperature controller.
Temperature controller is provided with an alarming value and a harm value respectively.
Temperature controller also is provided with a temperature modified value X.
On high temperature sample waterpipe, also be connected with sample water sampling valve.
On cooling water pipeline, be connected with the chilled water water intaking valve.
On sample waterpipe after the cooling, be connected with sample water through valve.
On the CWR road, be connected with the chilled water back-water valve (BWV).
High temperature sample water sample water regulating valve adopts solenoid valve.
The warning contact of analyser can be in parallel with the warning contact of temperature controller.
The high temperature sample water to be analyzed that comes from process system enters heat interchanger through high temperature sample waterpipe, sample water regulating valve and sample water sampling valve, and the chilled water that comes from the chilled water pipe network enters heat interchanger through cooling water pipeline, chilled water water intaking valve.Both carry out contactless heat interchange in heat interchanger, sample water after being cooled sample waterpipe and sample water after supercooling enter analyser through valve, chilled water then turns back to the CWR net through CWR road and chilled water back-water valve (BWV), and sample water is discharged into through sample water discharge spout road and sample water discharging valve behind the instrument by analysis and receives grid nearby.Be connected with sample coolant-temperature gage measuring sensor on sample waterpipe after the cooling, sample coolant-temperature gage measuring sensor is connected in temperature controller, the aperture of temperature controller control sample water regulating valve.
According to actual needs, temperature controller is provided with an alarming value and a harm value respectively, and a temperature modified value X can also be set, to overcome the protection action hysteresis that temperature survey lags behind and brings.In case the sample coolant-temperature gage that chilled water cutout or other reasons cause reaches alarming value; sample coolant-temperature gage measuring sensor is delivered to temperature controller to temperature signal; temperature controller sends action command; the instruction that the sample water regulating valve is accepted temperature controller turns down the sample water that enters heat interchanger; reach the harm value as temperature; then temperature controller sends action command, and the instruction cut-out that the sample water regulating valve is accepted temperature controller enters the sample water of heat interchanger, thereby reaches the purpose of automatic protection analyser probe.
For the analysis meter that carries temperature detection, warning device, can have the effect of dual fail-safe to the warning contact parallel connection of the warning contact of analyser and temperature controller.
High temperature sample water sample water regulating valve adopts solenoid valve, has to move fast, turn-off good effectiveness.
Sample water sampling valve, chilled water water intaking valve, sample water are in order to control high temperature sample water and chilled water start-stop better in maintenance and production run through setting up of valve, chilled water back-water valve (BWV).
The utility model is realized the automatic control through cooled sample coolant-temperature gage by detector unit and temperature controller, has effectively protected the analyser probe to exempt from overtemperature and has damaged.
The system architecture that the utility model provides is simple, has the automatic controlling level height, controls advantages such as sensitivity is good, and higher promotional value and comparatively wide application prospect are arranged.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is a hardware synoptic diagram of the present utility model.
Embodiment
Embodiment one:
Enter heat interchanger 1 from the high temperature sample water to be analyzed of process system 2 through high temperature sample waterpipe 5, sample water regulating valve 6 and sample water sampling valve 7, the chilled water that comes from the chilled water pipe network enters heat interchanger 1 through cooling water pipeline 8, chilled water water intaking valve 9.Both carry out contactless heat interchange in heat interchanger 1, sample water after being cooled sample waterpipe 11 and sample water after supercooling enter analyser 16 through valve 10, chilled water then turns back to the CWR net through CWR road 13 and chilled water back-water valve (BWV) 12, and sample water is discharged into through sample water discharge spout road 15 and sample water discharging valve 14 behind the instrument by analysis and receives grid nearby.Be connected with sample coolant-temperature gage measuring sensor 3 on sample waterpipe 11 after the cooling, sample coolant-temperature gage measuring sensor 3 is connected in temperature controller 4, the aperture of temperature controller 4 control sample water regulating valves 6.
High temperature sample water sample water regulating valve 6 adopts solenoid valve, has to move fast, turn-off good effectiveness.Chilled water, sample water system move just often, and sample water regulating valve 6 is in off position, and sample water passes through smoothly.When unusual or other reasons causes sample water overtemperature before entering analyser when cooling water system, report to the police earlier, temperature controller 4 sends instruction, turns down the sample water that enters heat interchanger 1.If the sample coolant-temperature gage continues to raise, when reaching the harm value, then temperature controller 4 sends action command, and the instruction cut-out that sample water regulating valve 6 is accepted temperature controller 4 enters the sample water of heat interchanger 1, thereby reaches the purpose of automatic protection analyser probe.After trouble hunting finished, temperature reduced naturally, and under the instruction of temperature controller 4, sample water regulating valve 6 resets, and high temperature sample water passage is opened.
Claims (9)
1. analyser probe automatic safety device, it comprises process system (2), heat interchanger (1), analyser (16), it is characterized in that: high temperature sample waterpipe (5) one ends connect process system (2), the other end connects heat interchanger (1), on high temperature sample waterpipe (5), be connected with sample water regulating valve (6), cooling water pipeline (8) connects heat interchanger (1), cooling back sample waterpipe (11) one ends connect heat interchanger (1), the other end connects analyser (16), and CWR road (13) one ends connect heat interchanger (1); Be connected with sample coolant-temperature gage measuring sensor (3) on sample waterpipe (11) after the cooling, sample coolant-temperature gage measuring sensor (3) is connected in temperature controller (4).
2. according to the described analyser probe of claim 1 automatic safety device, it is characterized in that: temperature controller (4) is provided with an alarming value and a harm value respectively.
3. according to claim 1 or 2 described analyser probe automatic safety devices, it is characterized in that: temperature controller (4) also is provided with a temperature modified value X.
4. according to the described analyser probe of claim 1 automatic safety device, it is characterized in that: on high temperature sample waterpipe (5), also be connected with sample water sampling valve (7).
5. according to the described analyser probe of claim 1 automatic safety device, it is characterized in that: on cooling water pipeline (8), be connected with chilled water water intaking valve (9).
6. according to the described analyser probe of claim 1 automatic safety device, it is characterized in that: on sample waterpipe (11) after the cooling, be connected with sample water through valve (10).
7. according to the described analyser probe of claim 1 automatic safety device, it is characterized in that: on CWR road (13), be connected with chilled water back-water valve (BWV) (12).
8. according to the described analyser probe of claim 1 automatic safety device, it is characterized in that: high temperature sample water sample water regulating valve (6) adopts solenoid valve.
9. according to claim 1 or 2 described analyser probe automatic safety devices, it is characterized in that: the warning contact of analyser (16) can be in parallel with the warning contact of temperature controller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203044203U CN201434863Y (en) | 2009-06-15 | 2009-06-15 | Automatic protection device of analyzer probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203044203U CN201434863Y (en) | 2009-06-15 | 2009-06-15 | Automatic protection device of analyzer probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201434863Y true CN201434863Y (en) | 2010-03-31 |
Family
ID=42053676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203044203U Expired - Lifetime CN201434863Y (en) | 2009-06-15 | 2009-06-15 | Automatic protection device of analyzer probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201434863Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424530A (en) * | 2013-08-22 | 2013-12-04 | 中冶焦耐工程技术有限公司 | A method for measuring oil content in high temperature condensed water |
| CN103792329A (en) * | 2014-01-21 | 2014-05-14 | 山东省科学院海洋仪器仪表研究所 | Seawater measuring equipment with measuring probe self-protection function |
-
2009
- 2009-06-15 CN CN2009203044203U patent/CN201434863Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424530A (en) * | 2013-08-22 | 2013-12-04 | 中冶焦耐工程技术有限公司 | A method for measuring oil content in high temperature condensed water |
| CN103792329A (en) * | 2014-01-21 | 2014-05-14 | 山东省科学院海洋仪器仪表研究所 | Seawater measuring equipment with measuring probe self-protection function |
| CN103792329B (en) * | 2014-01-21 | 2015-08-19 | 山东省科学院海洋仪器仪表研究所 | There is the seawater measurement mechanism of measuring sonde self-protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100331 |