CN108982340A - A kind of recirculating cooling water system dynamic simulation experimental device and its operation method - Google Patents
A kind of recirculating cooling water system dynamic simulation experimental device and its operation method Download PDFInfo
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- CN108982340A CN108982340A CN201810327523.5A CN201810327523A CN108982340A CN 108982340 A CN108982340 A CN 108982340A CN 201810327523 A CN201810327523 A CN 201810327523A CN 108982340 A CN108982340 A CN 108982340A
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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Abstract
The invention discloses a kind of recirculating cooling water system dynamic simulation experimental device and its operation methods, the cabinet side of cyclic water tank is equipped with cooling water drainage water valve and make-up water inlet valve, cyclic water tank between cooling water drainage water valve and make-up water inlet valve is equipped with fixation hole, heating rod and thermocouple are installed in the fixation hole, heating rod and thermocouple pass through route respectively and connect with external temperature controller, two sides are respectively fixed with carbon steel test piece and red copper test piece among cyclic water tank top, carbon steel test piece and red copper test piece lower part are respectively equipped with gas pipe, the gas pipe is connected with external air blower, the bottom of cyclic water tank is equipped with water circulating pump, water circulating pump is connect with the circulating water flow meter being fixed on cyclic water tank, the water distributor of carbon steel test piece and red copper test piece upper end passes through water pipe respectively and connect with circulating water flow meter.Apparatus of the present invention automation degree of equipment is high, not only facilitates control but also facilitates operation, can be used for studying the equipment corrosion and fouling relevant issues of recirculating cooling water system generation.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of recirculating cooling water system dynamic simulation experimental device and
Its operation method.
Background technique
Metal erosion is the problem of human society is survived, is seen everywhere in life and phenomenon, while also drastically influencing state
The stabilization sustainable growth of people's economy.In recirculating cooling water system, systems equipment is mostly that metal material (mainly has carbon steel, copper
And stainless steel), under conditions of several times (2-8 times) and high temperature is concentrated, it is easy to cause in recirculating cooling water system equipment surface
Form mineral incrustations, microbial fouling and corrosive pipeline problem.
Recirculated cooling water is the chief component of industrial water with water.The scale problems of pipeline and equipment are prevalent in
In industrial production, such as thermoelectricity, petroleum, electronics.Mainly there are underground water, surface water in water source currently used for recirculating cooling water system
And treated municipal sewage, but municipal sewage, after secondary biochemical treatment, water quality is relatively simple, still containing a large amount of
Inorganic ions (such as Ca2+、Mg2+、CO3 2-And SO4 2-) and a small amount of organic matter, it is cooling if being back to recirculating cooling water system
Water is in heat exchange and through that will bring scale problems to system in cooling recycling use process.It is straight brought by equipment surface fouling
Connecing consequence is the working efficiency for reducing heat-exchange system, industrial production is influenced when serious, or even whole system is made to paralyse.
What the recirculating cooling water system in China was done at present is also not perfect, concentrates several times (usually in recirculated cooling water
5-8 times) and high temperature under conditions of, it is easy to cause the system equipment surface formed pipeline corrosion.By biochemical treatment
Municipal sewage in metabolite (such as the polysaccharide, albumen of the organic matter degraded and microorganism are difficult to containing a large amount of microorganisms
Matter, humic acid, nucleic acid etc.).There is scholar to report that the humic acid contained in seawater there can be the scaling process of calcium carbonate certain
Inhibiting effect, humic acid, polysaccharide and protein are organic matters relatively common in municipal sewage, are largely from micro- life
The metabolite of object.These organic matters probably generate certain shadow to the scaling process of the mineral in recirculating cooling water system
It rings, and these organic matters are possible to that microorganism can be promoted to adhere on the surface of pipeline, so that microbial fouling is formed, microorganism
Fouling has facilitation to tubing corrosion again.
Tradition research recirculating cooling water system equipment surface forms mineral incrustations, microbial fouling and corrosive pipeline problem
Equipment there is structure is complicated, it is cumbersome, not easy to control, the problem of actual operating mode cannot be simulated well.
Summary of the invention
The present invention is to study the corrosion of equipment and scale problems in recirculating cooling water system and provide a kind of circulating cooling
Water system dynamic simulation experimental device and its operation method, the device is not only easily controllable but also facilitates operation, can be good at simulating
Actual cycle cooling water operating condition, the relevant issues such as equipment corrosion and scaling generated convenient for research recirculating cooling water system.
The present invention adopts the following technical scheme that a kind of recirculating cooling water system dynamic analog is real to solve above-mentioned technical problem
Experiment device, it is characterised in that including cyclic water tank, cooling water drainage water valve, make-up water inlet valve, air blower, carbon steel test piece, red copper
The cabinet side of test piece, circulating water flow meter, heating rod, thermocouple and water circulating pump, the cyclic water tank is equipped with cooling water drainage
Water valve and make-up water inlet valve, the cyclic water tank between cooling water drainage water valve and make-up water inlet valve are equipped with fixation hole, this is solid
Determine that heating rod and thermocouple are installed in hole, heating rod and thermocouple pass through route respectively and connect with external temperature controller, recirculated water
Two sides are respectively fixed with carbon steel test piece and red copper test piece among upper box part, and carbon steel test piece and red copper test piece lower part are respectively equipped with gas distribution
Device, the gas pipe are connected with external air blower, and the bottom of cyclic water tank is equipped with water circulating pump, water circulating pump be fixed on circulation
The water distributor on the circulating water flow meter connection on water tank, carbon steel test piece and red copper test piece top passes through water pipe and circulating water flow respectively
Meter connection.
Further preferably, the material of the cyclic water tank is stainless steel, and the volume of cyclic water tank is 100~1000L, circulation
Water temperature in water tank is adjusted to 30~100 DEG C by heating rod and thermocouple by temperature controller.
The operation method of recirculating cooling water system dynamic simulation experimental device of the present invention, it is characterised in that specific mistake
Journey are as follows: fixed carbon steel test piece and red copper test piece first at cyclic water tank top 1/4, for simulating Circulating Cooling Water of Power Plant system
The heat exchanger tube of system, the flow velocity that circulating water flow meter is then arranged is 0.5~5L/min, opens water circulating pump and passes through water pipe and water distribution
Device uniformly sprays cooling water to carbon steel test piece and red copper test piece, and water pipe internal diameter is 5~50mm, and recirculated cooling water passes through carbon steel test piece
Cyclic water tank is flowed into red copper strip, while upward by carbon steel test piece and red copper test piece bottom by air blower and gas pipe
Air blast, for simulating the flowing of the air in steam power plant's cooling tower, the water temperature in cyclic water tank passes through temperature by heating rod and thermocouple
Instrument automatic control and adjustment is controlled to 30~100 DEG C, according to the conductivity of cooling water in cyclic water tank, by make-up water inlet valve to following
Experimental water is fed in ring water tank and recirculated cooling water is adjusted by the concentrated water in cooling water drainage water valve discharge cycle water tank
For cycles of concentration to realize the recirculated cooling water simulated under different operating conditions, make-up water water inlet uses liquid automatic control, water tank
The cycles of concentration of middle cooling water is drained by drain valve according to conductivity in water and is controlled.
Further preferably, the flow velocity of the circulating water flow meter is 2 L/min, the water temperature in cyclic water tank by heating rod and
Thermocouple is by temperature controller automatic control and adjustment to 60 DEG C.
Apparatus of the present invention automation degree of equipment is high, not only facilitates control but also facilitates operation, application field is wide, can be used for studying
The equipment corrosion and fouling relevant issues that recirculating cooling water system generates.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of recirculating cooling water system dynamic simulation experimental device in the present invention.
In figure: 1- cyclic water tank, 2- cooling water drainage water valve, 3- make-up water inlet valve, 4- air blower, 5- carbon steel test piece, 6-
Red copper test piece, 7- circulating water flow meter, 8- heating rod, 9- thermocouple, 10- water circulating pump.
Specific embodiment
The present invention is further detailed with reference to the accompanying drawing.Recirculating cooling water system dynamic simulation experimental device by
Cyclic water tank 1, cooling water drainage water valve 2, make-up water inlet valve 3, air blower 4, carbon steel test piece 5, red copper test piece 6, circulating water flow
Meter 7, heating rod 8, thermocouple 9 and water circulating pump 10 form.
Apparatus structure: first in 1 left side of cyclic water tank that volume is 100~1000L away from setting cooling at bottom about 1/10
Water drain valve 2, left side is far from heating rod 8 fixed at bottom about 1/4, and left side is far from thermocouple 9 fixed at bottom about 3/7,8 He of heating rod
Thermocouple 9 is connected with external temperature controller；Left side is far from setting make-up water inlet valve 3,1 right side bottom of cyclic water tank at bottom about 4/7
Water circulating pump 10 is arranged in portion, and 1 right side of cyclic water tank is away from setting circulating water flow meter 7 at bottom about 1/3, water circulating pump 10 and circulation
Water ga(u)ge 7 is connected；Fix carbon steel test piece 5 and red copper test piece 6 respectively at left and right sides of at 1 bottom of cyclic water tank about 3/4,
Carbon steel test piece 5 and 6 bottom of red copper test piece setting gas pipe are connected with the air blower 4 outside cyclic water tank 1, carbon steel test piece 5 and purple
6 top of copper test piece setting water distributor is connected with circulating water flow meter 7 by water pipe.
Specific method and step: the fixed carbon steel examination first at the cyclic water tank top about 1/4 that volume is 100~1000L
Piece and red copper test piece, for simulating the heat exchanger tube of Circulating Cooling Water of Power Plant system；Then the flow velocity of circulating water flow meter is set
For 0.5~5L/min, water circulating pump is opened by water pipe and water distributor and uniformly sprays cooling water to carbon steel test piece and red copper test piece,
Water pipe internal diameter is 5~50mm, and recirculated cooling water is since gravity is by carbon steel test piece and red copper strip inflow cyclic water tank；Together
When by air blower to carbon steel test piece and red copper test piece bottom by gas pipe air blast from bottom to top, for simulating steam power plant's cooling tower
In air flowing；Water temperature in cyclic water tank passes through temperature controller automatic control and adjustment to 30~100 by heating rod and thermocouple
℃；According to the conductivity of cooling water in cyclic water tank, experimental water is fed into cyclic water tank by make-up water inlet valve and is led to
Concentrated water in supercooled water drain valve discharge cycle water tank adjusts the cycles of concentration of recirculated cooling water to realize the different fortune of simulation
Recirculated cooling water under row operating condition, make-up water water inlet use liquid automatic control, and the cycles of concentration of cooling water is according to water in water tank
Middle conductivity is drained by drain valve and is controlled.
In the present invention, cyclic water tank is stainless steel material, and specification is 60cm × 60cm × 60cm, volume 216L, away from
It is by the limited public affairs of Shanghai instrument electricity scientific instrument share from carbon steel test piece and red copper test piece fixed at the 50cm of cyclic water tank bottom
Department's supply, specification is 50mm × 25mm × 2mm, for simulating the heat exchanger tube of Circulating Cooling Water of Power Plant system；Circulating water flow
Meter is provided by Yuyao Ju Yi environmental protection equipment Co., Ltd, model LZM-15, for adjusting flow；Water circulating pump, which is set to, to follow
Ring water tank bottom is provided by Wenzhou HowardQuan Beng industry Co., Ltd, and model MP-6RZ is used to pass through water pipe and water distributor to carbon steel
Cooling water is uniformly sprayed in test piece and red copper test piece；Air blower is provided by Shanghai Singh Co., Ltd, and model XK23-D1 passes through
Gas pipe is to carbon steel test piece and the air blast from bottom to top of red copper test piece bottom, for simulating the flowing of the air in cooling tower；Distance is followed
Heating rod at ring water tank bottom 15cm is provided by Nuo Bei Electric Applicance Co., Ltd of Yangzhong City, model JGS11-220.2400；Away from
It is provided from the thermocouple at the 25cm of cyclic water tank bottom by Jiangsu Huan Ya electrothermic instrument Co., Ltd, model WRN-K-331, temperature
Spending range is 0~1300 DEG C, and heating rod and thermocouple pass through the temperature controller self-regulating water tank temperature outside water tank；Distance circulation
Make-up water inlet valve at water tank bottom 35cm is write valve Co., Ltd by Wenzhou and is provided, and concrete model 100X, distance is followed
Cooling water drainage water valve at ring water tank bottom 5cm is provided by Shanghai Bo Ju compressor Co., Ltd, and model BJ-10A passes through benefit
The cycles of concentration of recirculated cooling water is adjusted to the concentrated water in experimental water and discharge cycle water tank.
Carbon steel test piece and red copper test piece are fixed in cyclic water tank first, the flow velocity of setting circulating water flow meter is 2L/
Min opens water circulating pump by the water pipe and water distributor that internal diameter is 15mm and uniformly sprays cooling to carbon steel test piece and red copper test piece
Water, recirculated cooling water is since gravity is by carbon steel test piece and red copper strip inflow cyclic water tank；Simultaneously by air blower and
Gas pipe is by the upward air blast of carbon steel test piece and red copper test piece bottom, for simulating the flowing of the air in steam power plant's cooling tower, circulation
Temperature in water tank is adjusted to 60 DEG C by temperature controller automatic control by heating rod and thermocouple, according to cooling water in cyclic water tank
Conductivity feeds experimental water by make-up water inlet valve and by cooling water drainage water valve discharge cycle water tank into cyclic water tank
In concentrated water adjust the cycles of concentration of recirculated cooling water to realize the recirculated cooling water simulated under different operating conditions, make-up water
Water inlet uses liquid automatic control, and the cycles of concentration of cooling water passes through cooling water drainage water valve according to conductivity in water in cyclic water tank
Draining control.
Basic principle of the invention, main feature and advantage has been shown and described above, do not depart from spirit of that invention and
Under the premise of range, there are also various changes and modifications, these changes and improvements to both fall within claimed invention by the present invention
Range.
Claims (4)
1. a kind of recirculating cooling water system dynamic simulation experimental device, it is characterised in that including cyclic water tank, cooling water drainage water valve,
Make-up water inlet valve, air blower, carbon steel test piece, red copper test piece, circulating water flow meter, heating rod, thermocouple and water circulating pump, institute
The cabinet side for stating cyclic water tank is equipped with cooling water drainage water valve and make-up water inlet valve, cooling water drainage water valve and make-up water inlet valve
Between cyclic water tank be equipped with fixation hole, heating rod and thermocouple, heating rod and thermocouple difference are installed in the fixation hole
It is connect by route with external temperature controller, two sides are respectively fixed with carbon steel test piece and red copper test piece, carbon among cyclic water tank top
Steel test piece and red copper test piece lower part are respectively equipped with gas pipe, which is connected with external air blower, the bottom of cyclic water tank
Equipped with water circulating pump, water circulating pump is connect with the circulating water flow meter being fixed on cyclic water tank, carbon steel test piece and red copper test piece
The water distributor on top passes through water pipe respectively and connect with circulating water flow meter.
2. recirculating cooling water system dynamic simulation experimental device according to claim 1, it is characterised in that: the recirculated water
The material of case is stainless steel, and the volume of cyclic water tank is 100~1000L, and the water temperature in cyclic water tank passes through heating by temperature controller
Stick and thermocouple are adjusted to 30~100 DEG C.
3. a kind of operation method of recirculating cooling water system dynamic simulation experimental device described in claim 1, it is characterised in that
Detailed process are as follows: fixed carbon steel test piece and red copper test piece first at cyclic water tank top 1/4, it is cold for simulating steam power plant's circulation
But the heat exchanger tube of water system, the flow velocity that circulating water flow meter is then arranged is 0.5~5L/min, opens water circulating pump and passes through water pipe
Cooling water is uniformly sprayed to carbon steel test piece and red copper test piece with water distributor, water pipe internal diameter is 5~50mm, and recirculated cooling water passes through carbon
Steel test piece and red copper strip flow into cyclic water tank, while by air blower and gas pipe by carbon steel test piece and red copper test piece bottom
The upward air blast in portion, for simulating the flowing of the air in steam power plant's cooling tower, the water temperature in cyclic water tank is by heating rod and thermocouple
By temperature controller automatic control and adjustment to 30~100 DEG C, according to the conductivity of cooling water in cyclic water tank, intake by make-up water
Valve experimental water is fed into cyclic water tank and adjusted by the concentrated water in cooling water drainage water valve discharge cycle water tank circulation it is cold
But the cycles of concentration of water to realize the recirculated cooling water simulated under different operating conditions, controlled automatically using liquid level by make-up water water inlet
It makes, the cycles of concentration of cooling water passes through drain valve draining according to conductivity in water and controls in water tank.
4. the operation method of recirculating cooling water system dynamic simulation experimental device according to claim 3, feature exist
In: the flow velocity of the circulating water flow meter is 2 L/min, and the water temperature in cyclic water tank passes through temperature controller by heating rod and thermocouple
Automatic control and adjustment is to 60 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111398526A (en) * | 2020-03-31 | 2020-07-10 | 广东省石油与精细化工研究院 | Recirculated cooling water monitoring heat transfer system |
| CN113390779A (en) * | 2021-06-30 | 2021-09-14 | 中国海洋大学 | Device for simulating seawater pressure and flow and test method for accelerating erosion of stone bodies |
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| CN113390779A (en) * | 2021-06-30 | 2021-09-14 | 中国海洋大学 | Device for simulating seawater pressure and flow and test method for accelerating erosion of stone bodies |
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