CN109596664A - Monitoring evaporation cooling or evaporation condensing plant shower water side dirt device and method - Google Patents
Monitoring evaporation cooling or evaporation condensing plant shower water side dirt device and method Download PDFInfo
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- CN109596664A CN109596664A CN201811644695.1A CN201811644695A CN109596664A CN 109596664 A CN109596664 A CN 109596664A CN 201811644695 A CN201811644695 A CN 201811644695A CN 109596664 A CN109596664 A CN 109596664A
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- 238000001704 evaporation Methods 0.000 title claims abstract description 79
- 230000008020 evaporation Effects 0.000 title claims abstract description 79
- 238000001816 cooling Methods 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 238000005482 strain hardening Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
- G01N25/4806—Details not adapted to a particular type of sample
- G01N25/4813—Details not adapted to a particular type of sample concerning the measuring means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2200/00—Prediction; Simulation; Testing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention relates to a kind of monitoring evaporation cooling or evaporation condensing plant shower water side dirt device and methods, the center of heat exchanging piece simulator is equipped with one and the consistent electrical heating elements of heat exchanging piece simulator shell shape, at least eight first temperature sensors are enclosed between electrical heating elements and heat exchanging piece simulator shell, the surface and underface of heat exchanging piece simulator are equipped with the shape water receiving utensil of rectangular funnel up and down of shower water temperature sampler respectively, at least four second temperature sensors are housed at upper rectangular funnel closing in, at least four third temperature sensors are housed at lower rectangular funnel closing in；Evaporation is cooling or evaporation condensing plant is equipped with the 4th temperature sensor, evaporation cooling or evaporation condensing plant by the entrance of cold working medium and closes tower by the outlet of cold working medium equipped with the 5th temperature sensor；The Acquisition Instrument of the acquisition controller connects the first to the 5th temperature sensor, and heating electric power measuring instrument connects the electrical heating elements in heat exchanging piece simulator.
Description
Technical field
The present invention relates to a kind of monitoring device and method, especially a kind of monitoring evaporation cooling (including closed cooling tower) or
The device and method of evaporation condensing plant shower water side dirtiness resistance.
Background technique
Evaporation cooling (containing closed cooling tower) or evaporation condensing plant, since shower water is in the evaporation of heat exchange element wall surface,
It is easy in its surface scale, the factors such as scale velocity and shower water water quality, heat exchange element wall material and temperature are related.Dirt
Heat transfer coefficient very little, cause equipment heat exchange property continue to decline.Therefore understand dirt in time to generate situation and clear up in time dirty
Dirt is at the major issue for ensureing that equipment is normally and efficiently run.It is a kind of related to dirtiness resistance by monitoring therefore, it is necessary to invent
Coefficient K variation come understand dirt generate situation device and method.
Summary of the invention
The present invention is to provide for that a kind of monitoring evaporation is cooling or evaporation condensing plant shower water side dirt device and method, leads to
The practical operation situation of simulation evaporation cooling or evaporation condensing plant and closed cooling tower is crossed, the variation according to heat transfer coefficient is timely
Dirt generating process is recorded, in order to clean in due course.
To achieve the above object, the technical scheme is that a kind of monitoring evaporation is cooling or evaporation condensing plant sprays
Water side dirt device, has a heat exchanging piece simulator, and the center of an acquisition controller, the heat exchanging piece simulator is equipped with one
With the consistent electrical heating elements of heat exchanging piece simulator shell shape, be enclosed between electrical heating elements and heat exchanging piece simulator shell to
Few eight the first temperature sensors, are filled out between the heat exchanging piece simulator shell, electrical heating elements and the first temperature sensor three
Fill heat-conducting insulation material；The surface and underface of the heat exchanging piece simulator are equipped with the upper and lower of shower water temperature sampler respectively
Rectangular funnel shape water receiving utensil senses at the funnel closing in of upper rectangular funnel shape water receiving utensil equipped at least four second temperatures
Device is equipped at least four third temperature sensors at the funnel closing in of lower rectangular funnel shape water receiving utensil；The heat exchanging piece mould
Quasi- device and shower water temperature sampler both ends are fixed by the bracket connection respectively；Evaporation cooling or evaporation condensing plant and enclosed are cold
But tower is equipped with the 4th temperature sensor, evaporation cooling or evaporation condensing plant and closed cooling tower by the entrance of cold working medium
One the 5th temperature sensor is equipped with by the outlet of cold working medium；The acquisition controller is integrated with D.C. regulated power supply, heating electricity
Power measurement instruments, Acquisition Instrument, controller and display；The Acquisition Instrument connects the first to the 5th temperature sensor, the direct current
Regulated power supply connects the electrical heating elements in heat exchanging piece simulator, powers for electrical heating elements, the heating electric power measuring instrument
The electrical heating elements in heat exchanging piece simulator are connected, to measure its electrical power.
Further, the heat exchanging piece simulator shell shape is one of round tube, polygonal tube, elliptical tube, sheet.
Further, the major and minor axis of the caliber of the round tube, the equivalent diameter of polygonal tube or elliptical tube is in 10~30mm
In range, pipe range is 5~10cm；The side length of the sheet is 10~15cm.
Further, the heat exchanging piece simulator enclosure material is that cooling monitored evaporation or evaporation condensing plant and enclosed are cold
But material used in heat exchanging piece in tower: one of copper, stainless steel, galvanized steel, aluminium and aluminium alloy.
Further, the long side of rectangular funnel of the rectangular funnel shape water receiving utensil and the pipe range of heat exchanging piece simulator or
Plate is long consistent, and the water receiving mouth width of rectangular funnel is 5~15mm, and depth is 10~20mm, and the water outlet mouth width of rectangular funnel is 2~
4mm, depth are 5~10mm, and the water outlet of upper rectangular funnel is 2~5mm, lower rectangle with a distance from heat exchanging piece simulator upper edge
The water inlet of funnel is 10~15mm with a distance from heat exchanging piece simulator lower edge.
Further, the bracket is equipped with hanging ring, and the bracket is fixed on monitored evaporation cooling by hanging ring or steams
It sends out on the measuring point between the heat exchanger tube or heat exchanger fin of condensing plant and closed cooling tower.
It is a kind of using monitoring evaporation is cooling or evaporation condensing plant and closed cooling tower shower water side dirtiness resistance device
Monitoring method the steps include:
1) D.C. regulated power supply provides adjustable stable DC to the electrical heating elements of heat exchanging piece simulator, heating
Electric power measurement instrument measures the electrical power of the electrical heating elements of the heat exchanging piece simulator；
2) Acquisition Instrument acquisition and the first to the 5th temperature sensor signal of pick-up and heating electric power signal, wherein the first temperature
Degree the adopted temperature of sensor is averaged as the wall surface temperature of heat exchanging piece simulator, and the adopted temperature of second temperature sensor is averaged
The mean temperature of average out to shower water again after value and the adopted temperature of third temperature sensor are averaged；
3) according to the average value of the 4th and the 5th the adopted temperature of temperature sensor and the adopted temperature of the first temperature sensor it
Difference adjusts the electrical power of electrical heating elements using digital PID method, make the wall surface temperature of heat exchanging piece simulator and evaporation it is cooling or
Evaporation condensing plant and closed cooling tower are servo-actuated and aligned by the average value holding of cold working medium out temperature；
4) it Numerical heat transfer COEFFICIENT K and saves；
5) each temperature value adopted, heating electric power value, current Coefficient K, current heat transfer coefficient are shown by display
With the difference DELTA K of original heat transfer coefficient.
Further, when the difference DELTA K of current Coefficient K and original heat transfer coefficient is more than setting limit value, alarm signal is exported
Number；After the present apparatus and evaporation cooling or evaporation condensing plant and closed cooling tower clean jointly, when writing down rigid bring into operation
Energy saving, as next round monitoring original value.
Further, the Coefficient K, unit: W/m2/ DEG C it is calculated as follows:
K=Q/F/ (Tb-Tf)
In formula: Q is heating electric power, unit: W；F is the surface area of the wall surface of heat exchanging piece simulator, unit: m2；TbTo change
The mean temperature of the wall surface of warmware simulator, unit: DEG C；TfFor the mean temperature for flowing through heat exchanging piece simulator wall surface shower water,
Unit: DEG C.
As variation, the electric heating wire in the electrical heating elements uses resistive platinum wire, directly logical using resistive platinum wire
Electric heating controls its temperature by adjusting voltage control heating amount, measures its electric current I and voltage value U, calculate it by I × U
Heating electric power calculates its resistance value by U/I, to obtain the mean temperature T of the wall surface of heat exchanging piece simulatorb。
The beneficial effects of the present invention are:
The present invention uses heat exchanging piece simulator and acquisition controller, is capable of the practical operation situation of analog machine, passes through biography
The variation of hot coefficient records dirt generating process in time, can understand dirt in time and generate situation and clear up dirt in time, guarantee is set
Standby normally and efficiently operation.
Detailed description of the invention
Fig. 1 is cooling monitoring evaporation of the invention or evaporation condensing plant and closed cooling tower shower water side dirtiness resistance dress
Set structural schematic diagram；
Fig. 2 is the signal of heat exchanging piece simulator shell shape and upper and lower rectangular funnel shape water receiving utensil cross section and bracket
Figure；
Wherein: (a) round tube, (b) polygonal tube, (c) elliptical tube, (d) sheet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, monitoring evaporation cooling of the invention or evaporation condensing plant and closed cooling tower shower water side dirt
Resistive thermal device, including heat exchanging piece simulator 1, shower water temperature sampler (include upper rectangular funnel shape water receiving utensil 3 and lower rectangle
Funnel-form water receiving utensil 4), bracket 10, temperature sensor (comprising wrapped up between electrical heating elements and heat exchanging piece simulator shell
One temperature sensor 5, upper rectangular funnel shape water receiving utensil funnel closing at second temperature sensor 6, lower rectangular funnel shape
Third temperature sensor 7, evaporation cooling or evaporation condensing plant and closed cooling tower at the funnel closing in of water receiving utensil is cold
The 4th temperature sensor 8, evaporation cooling or the evaporation condensing plant of the entrance of working medium and closed cooling tower going out by cold working medium
The 5th temperature sensor 9 at mouthful) and acquisition controller 2.Acquisition controller 2 is integrated with D.C. regulated power supply, heating electric power
Measuring instrument, Acquisition Instrument, controller and display.
Such as Fig. 2 (a), (b), (c), (d) shown in, 1 shell shape of heat exchanging piece simulator have round tube, polygonal tube, elliptical tube,
Several forms such as sheet are optional, and to round tube, polygonal tube equivalent diameter or ellipse long and short shaft are within the scope of 10~30mm, pipe range
For 5~10cm；To sheet, side length is 10~15cm.Heat exchanging piece simulator enclosure material have copper, stainless steel, galvanized steel, aluminium and
Several forms such as aluminium alloy are optional.The evaporation cooling or steaming for selecting the principle of heat exchanging piece simulator shape and material to be and be monitored
It sends out the heat exchanger tube of condensing plant and closed cooling tower or the external form of heat exchanger fin, tube section size and material is consistent.
The center of heat exchanging piece simulator 1 is one and the consistent electrical heating elements of simulator shell shape, in electrical heating elements
It is enclosed with no less than 8 the first temperature sensors 5 between heat exchanging piece simulator shell, fills heat-conducting insulation material between three.
Shower water temperature sampler is two rectangular funnel shape water receiving utensils, is respectively placed in the surface of heat exchanging piece simulator 1
And underface, the long side of upper and lower rectangular funnel 3,4 and the pipe range of heat exchanging piece simulator or plate length are unanimously, rectangular funnel connects
Mouth of a river width is 5~15mm, and depth is 10~20mm, and the water outlet mouth width of rectangular funnel is 2~4mm, and depth is 5~10mm, upper
Equipped with no less than 4 second temperature sensors 6 at 3 closing in of rectangular funnel, equipped with no less than 4 at lower 4 closing in of rectangular funnel
Third temperature sensor 7, the water outlet of upper rectangular funnel 3 are 2~5mm, lower rectangle with a distance from 1 upper edge of heat exchanging piece simulator
The water inlet of funnel 4 is 10~15mm with a distance from 1 lower edge of heat exchanging piece simulator.
Bracket 10 is at the both ends of heat exchanging piece simulator and shower water temperature sampler, by heat exchanging piece simulator 1 and shower water
Temperature sampler is connected and fixed, and bracket 10 can be fixed on cooling tested evaporation or evaporation condensing plant there are also hanging ring 11 and close
On measuring point between formula cooling tower heat exchanger tube or heat exchanger fin.
Temperature sensor removes outside first, second, third temperature sensor 5,6,7, in evaporation cooling or evaporative condenser
Equipment and closed cooling tower are equipped with 1 the 4th temperature sensor 8 by the import of cold working medium, evaporation is cooling or evaporation condensing plant
And closed cooling tower is equipped with 1 the 5th temperature sensor 9 by the outlet of cold working medium.
D.C. regulated power supply in acquisition controller 2 provides adjustable stable DC to heat exchanging piece simulator 1
Electrical heating elements, the heating electric power measuring instrument in acquisition controller 2 measure the electrical heating elements of the heat exchanging piece simulator 1
Electrical power.
It is a kind of using monitoring evaporation is cooling or evaporation condensing plant and closed cooling tower shower water side dirtiness resistance device
Monitoring method the steps include:
1) D.C. regulated power supply provides adjustable stable DC to the electrical heating elements of heat exchanging piece simulator 1；
2) acquisition and all temperature sensor signals of pick-up and heating electric power signal, wherein the first temperature sensor is adopted
Temperature is averaged as the wall surface temperature of heat exchanging piece simulator, and the adopted temperature of second temperature sensor is averaged and third temperature
Average out to shower water mean temperature again after the adopted temperature of sensor is averaged；
3) according to the average value of the 4th and the 5th the adopted temperature of temperature sensor and the adopted temperature of the first temperature sensor it
Difference is adjusted the electrical power of the electrical heating elements in the heat exchanging piece simulator using digital PID method, makes heat exchanging piece simulator
Wall surface temperature and evaporation is cooling or evaporation condensing plant and closed cooling tower by the average value of cold working medium out temperature keep with
It is dynamic and aligned；
4) it Numerical heat transfer COEFFICIENT K and saves；
5) each temperature value, heating electric power value, current Coefficient K, current heat transfer coefficient and the original biography that display is adopted
The difference DELTA K of hot coefficient；
6) when the difference DELTA K of current heat transfer coefficient and original heat transfer coefficient is more than setting limit value, alarm signal is exported；
7) periodically starting monitoring, the frequency are 1~2 times/day, every time 1~2 hour.
8) function of reset: after the present apparatus and evaporation cooling or evaporation condensing plant and closed cooling tower clean jointly,
Energy saving when just bringing into operation is write down, the original value as next round monitoring.
Coefficient K (the unit: W/m2/ DEG C) it is calculated as follows:
K=Q/F/ (Tb-Tf)
In formula: Q is heating electric power, unit: W；F is the surface area of the wall surface of heat exchanging piece simulator, unit: m2；TbTo change
The mean temperature of the wall surface of warmware simulator, unit: DEG C；TfFor the mean temperature for flowing through heat exchanging piece simulator wall surface shower water,
Unit: DEG C.
As variation, resistive platinum wire is can be used in the electric heating wire of electrical heating elements, is directly powered and is added using resistive platinum wire
Heat controls its temperature by adjusting voltage control heating amount, measures its electric current I and voltage value U, calculate its heating by I × U
Electrical power calculates its resistance value by U/I, to obtain the mean temperature T of the wall surface of heat exchanging piece simulatorb。
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of monitoring evaporation is cooling or evaporation condensing plant shower water side dirt device, there is a heat exchanging piece simulator, one
A acquisition controller, it is characterised in that: the center of the heat exchanging piece simulator is equipped with one and heat exchanging piece simulator shell shape one
The electrical heating elements of cause are enclosed at least eight first temperature sensors, institute between electrical heating elements and heat exchanging piece simulator shell
It states and fills heat-conducting insulation material between heat exchanging piece simulator shell, electrical heating elements and the first temperature sensor three；The heat exchange
The surface and underface of part simulator are equipped with the shape water receiving utensil of rectangular funnel up and down of shower water temperature sampler respectively, upper
At least four second temperature sensors are housed, in lower rectangular funnel shape water butt at the funnel closing in of rectangular funnel shape water receiving utensil
At least four third temperature sensors are housed at the funnel closing in of tool；The heat exchanging piece simulator and shower water temperature sampler two
End is fixed by the bracket connection respectively；Evaporation cooling or evaporation condensing plant and closed cooling tower are equipped with by the entrance of cold working medium
One the 4th temperature sensor, evaporation is cooling or evaporation condensing plant and closed cooling tower by the outlet of cold working medium equipped with one the
Five temperature sensors；The acquisition controller is integrated with D.C. regulated power supply, heating electric power measuring instrument, Acquisition Instrument, controller
And display；The Acquisition Instrument connects the first to the 5th temperature sensor, and the D.C. regulated power supply connects heat exchanging piece simulator
Interior electrical heating elements are powered for electric heating member, the electric heating in the heating electric power measuring instrument connection heat exchanging piece simulator
Element, to measure its electrical power.
2. monitoring evaporation according to claim 1 is cooling or evaporation condensing plant shower water side dirt device, feature exist
In: the heat exchanging piece simulator shell shape is one of round tube, polygonal tube, elliptical tube, sheet.
3. monitoring evaporation according to claim 2 is cooling or evaporation condensing plant shower water side dirt device, feature exist
In: within the scope of 10~30mm, pipe range is the major and minor axis of the caliber of the round tube, the equivalent diameter of polygonal tube or elliptical tube
5~10cm；The side length of the sheet is 10~15cm.
4. monitoring evaporation according to claim 1 is cooling or evaporation condensing plant shower water side dirt device, feature exist
In: the heat exchanging piece simulator enclosure material is heat exchanging piece in monitored evaporation cooling or evaporation condensing plant and closed cooling tower
Material used: one of copper, stainless steel, galvanized steel, aluminium and aluminium alloy.
5. monitoring evaporation according to claim 1 is cooling or evaporation condensing plant shower water side dirt device, feature exist
In: the long side of rectangular funnel and the pipe range of heat exchanging piece simulator or plate of the rectangular funnel shape water receiving utensil are long consistent, square
The water receiving mouth width of shape funnel is 5~15mm, and depth is 10~20mm, and the water outlet mouth width of rectangular funnel is 2~4mm, depth is 5~
10mm, the water outlet of upper rectangular funnel are 2~5mm, the water inlet of lower rectangular funnel with a distance from heat exchanging piece simulator upper edge
It is 10~15mm with a distance from heat exchanging piece simulator lower edge.
6. monitoring evaporation according to claim 1 is cooling or evaporation condensing plant shower water side dirt device, feature exist
In: the bracket is equipped with hanging ring, and the bracket is fixed on cooling tested evaporation or evaporation condensing plant by hanging ring and closes
On measuring point between the heat exchanger tube or heat exchanger fin of formula cooling tower.
7. a kind of using claim 1-6 any the monitoring evaporation cooling or evaporation condensing plant shower water side dirt device
Monitoring method, which is characterized in that the steps include:
1) D.C. regulated power supply provides adjustable stable DC to the electrical heating elements of heat exchanging piece simulator, heats electric work
Rate measuring instrument measures the electrical power of the electrical heating elements of the heat exchanging piece simulator；
2) Acquisition Instrument acquisition and the first to the 5th temperature sensor signal of pick-up and heating electric power signal, wherein the first temperature passes
The adopted temperature of sensor is averaged as the wall surface temperature of heat exchanging piece simulator, the adopted temperature of second temperature sensor be averaged with
The mean temperature of average out to shower water again after the adopted temperature of third temperature sensor is averaged；
3) it according to the average value and the adopted temperature difference of the first temperature sensor of the 4th and the 5th the adopted temperature of temperature sensor, adopts
The electrical power that electrical heating elements are adjusted with digital PID method makes the wall surface temperature of heat exchanging piece simulator and evaporates cooling or evaporation
Condensing plant and closed cooling tower are servo-actuated and aligned by the average value holding of cold working medium out temperature；
4) it Numerical heat transfer COEFFICIENT K and saves；
5) each temperature value adopted, heating electric power value, current Coefficient K, current heat transfer coefficient and original are shown by display
The difference DELTA K of beginning heat transfer coefficient.
8. monitoring method according to claim 7, it is characterised in that: the difference of current Coefficient K and original heat transfer coefficient
Being worth Δ K is more than when setting limit value, to export alarm signal；When the present apparatus and evaporation cooling or evaporation condensing plant and closed cooling tower
After common cleaning, energy saving when just bringing into operation is write down, the original value as next round monitoring.
9. monitoring method according to claim 7, it is characterised in that: the Coefficient K, unit: W/m2/ DEG C as the following formula
It calculates:
K=Q/F/ (Tb-Tf)
In formula: Q is heating electric power, unit: W；F is the surface area of the wall surface of heat exchanging piece simulator, unit: m2；TbFor heat exchanging piece
The mean temperature of the wall surface of simulator, unit: DEG C；TfFor the mean temperature for flowing through heat exchanging piece simulator wall surface shower water, unit:
℃。
10. monitoring method according to claim 7, it is characterised in that: the electric heating wire in the electrical heating elements uses
Resistive platinum wire directly utilizes resistive platinum wire electrified regulation, controls its temperature by adjusting voltage control heating amount, measures it
Electric current I and voltage value U, calculates its heating electric power by I × U, calculates its resistance value by U/I, to obtain heat exchanging piece simulator
Wall surface mean temperature Tb。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644695.1A CN109596664B (en) | 2018-12-30 | 2018-12-30 | Device and method for monitoring dirt on water spraying side of evaporative cooling or evaporative condensing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644695.1A CN109596664B (en) | 2018-12-30 | 2018-12-30 | Device and method for monitoring dirt on water spraying side of evaporative cooling or evaporative condensing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109596664A true CN109596664A (en) | 2019-04-09 |
| CN109596664B CN109596664B (en) | 2024-05-17 |
Family
ID=65965606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811644695.1A Active CN109596664B (en) | 2018-12-30 | 2018-12-30 | Device and method for monitoring dirt on water spraying side of evaporative cooling or evaporative condensing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116018505A (en) * | 2020-08-26 | 2023-04-25 | 西门子股份公司 | Method for determining cooling body pollution by means of artificial intelligence |
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2018
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| CN107402228A (en) * | 2016-05-20 | 2017-11-28 | 福建宁德核电有限公司 | A kind of monitoring system and method for nuclear power station heat exchanger heat exchange property |
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| CN116018505B (en) * | 2020-08-26 | 2024-06-04 | 西门子股份公司 | Method for determining cooling body pollution by means of artificial intelligence |
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