CN106248249A - A kind of temperature field of air-cooled condenser of power plant measurement apparatus - Google Patents
A kind of temperature field of air-cooled condenser of power plant measurement apparatus Download PDFInfo
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- CN106248249A CN106248249A CN201610867678.9A CN201610867678A CN106248249A CN 106248249 A CN106248249 A CN 106248249A CN 201610867678 A CN201610867678 A CN 201610867678A CN 106248249 A CN106248249 A CN 106248249A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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Abstract
A kind of temperature field of air-cooled condenser of power plant measurement apparatus, including air cooling heat radiator assembly, temperature measuring optical cable, distributed optical fiber temperature measurement main frame and host computer, temperature measuring optical cable is arranged on inside air cooling heat radiator assembly and outside, multiple temperature transducer is distributed on every temperature measuring optical cable, temperature measuring optical cable is connected with distributed optical fiber temperature measurement main frame, and distributed optical fiber temperature measurement main frame is connected with host computer；Temperature measuring optical cable had both been used for transmitting light pulse signal, received again the optical signal carrying temperature field information reflected, the temperature information of the continuous space that the temperature transducer on temperature measuring optical cable is distributed in around temperature measuring optical cable for perception；Distributed optical fiber temperature measurement main frame transmitting light pulse signal, to temperature measuring optical cable, by the optical signal carrying temperature field information received and detection temperature measuring optical cable reflects, obtains the change information of temperature measuring optical cable temperature field surrounding.The present invention passes through Reasonable Arrangement temperature measuring optical cable, in conjunction with distributed optical fiber temperature measurement main frame, it is achieved the measurement to temperature field of air-cooled condenser of power plant.
Description
Technical field
The invention belongs to power plant technical field of temperature measurement, be specifically related to a kind of temperature field of air-cooled condenser of power plant and survey
Amount device.
Background technology
Power plant air cooling system refers to utilize the device of surrounding air cooling turbine discharge, utilizes air cooling zone to become popular
The exhaust steam measuring and making steam turbine to discharge is condensed into the tube bank of water and corollary apparatus is referred to as air cooling tubes condenser；Cooling tube bundle is by dissipating
Thermal element form, typical heat dissipation element mainly have three kinds: one be heavy caliber galvanizing elliptic steel pipe around elliptical finned tube, three rows
Pipe is arranged；Two is that galvanizing major diameter oval steel pipe box rectangle steel fin biexhaust pipe is arranged；Three is major diameter Flat steel pipe brazed aluminum
Galvanizing steel fin on wave-fin pipe or Flat steel pipe, single row of tubes layout, multiple heat dissipation element permutation and combination are integral, constitute one
Sheet cooling tube bundle.
Air-cooled condenser of power plant divides Direct Air-Cooled and indirect air cooling two ways.At present, indirect air cooling system employing is right
Inlet water temperature and exit water temperature measure；Direct air cooling system uses the outlet temperature to steam distributing pipe road and condensation water manifold to enter
Row is measured；Condenser ambient air temperature is all not directly measured by both the above air cooling system to air cooling system heat exchange
Performance, hot reflux situation etc. lack real-time monitoring means, have lacked air cooling system runing adjustment, preventing freeze in winter etc. the most effectively
Control foundation.
In prior art, owing to there is temperature monitoring in the thermometric mode such as commonly used thermocouple, thermal resistance, temperature sensing cable
Point many, system complex, wiring cost height, maintenance difficult, there is many unfavorable factors such as potential safety hazard, make power plant air cooling system
There is many restrictions in the extensively application that system ambient air temperature is measured.
Summary of the invention
The technical problem to be solved in the present invention is, for deficiencies of the prior art, it is provided that a kind of power plant is empty
Cold condenser temperature field measuring apparatus, uses the Reasonable Arrangement of temperature measuring optical cable, in conjunction with distributed optical fiber temperature measurement main frame, it is achieved that right
The measurement of temperature field of air-cooled condenser of power plant.
The present invention solves that above-mentioned technical problem be the technical scheme is that
A kind of temperature field of air-cooled condenser of power plant measurement apparatus, including air cooling heat radiator assembly, temperature measuring optical cable, distributed
Optical fiber temperature measurement host and host computer, temperature measuring optical cable is arranged on inside air cooling heat radiator assembly and outside, and every temperature measuring optical cable divides
Being furnished with multiple temperature transducer, temperature measuring optical cable is connected with distributed optical fiber temperature measurement main frame by cable connection parts, distributed light
Fine thermometric main frame is connected with host computer by communication interface (network interface, RS485 and relay dry contact)；Temperature measuring optical cable is both used for passing
Losing pulse signal, receive again the optical signal carrying temperature field information reflected, the temperature transducer on temperature measuring optical cable is used
Temperature information in the continuous space that perception is distributed in around temperature measuring optical cable；Light pulse signal launched by distributed optical fiber temperature measurement main frame
To temperature measuring optical cable, by the optical signal carrying temperature field information received and detection temperature measuring optical cable reflects, obtain temperature measuring optical
The change information of cable temperature field surrounding.
By such scheme, the inner side of air cooling heat radiator assembly and the surface of outside finned-tube bundle at least provided with a temperature measuring optical
Cable.
By such scheme, away from finned-tube bundle surface 0.1-1m distance at least provided with a survey inside air cooling heat radiator assembly
Away from finned-tube bundle surface 0.1-1m distance at least provided with a temperature measuring optical cable outside temperature optical cable or air cooling heat radiator assembly.
By such scheme, inside air cooling heat radiator assembly, dispel the heat away from finned-tube bundle surface 0.1-1m distance and air cooling
All at least provided with a temperature measuring optical cable outside device assembly, away from finned-tube bundle surface 0.1-1m distance.
By such scheme, the inner side of air cooling heat radiator assembly, dissipate away from finned-tube bundle surface 0.1-1m distance and air cooling
Outside hot device assembly, the surface of finned-tube bundle is all at least provided with a temperature measuring optical cable.
By such scheme, finned tube on the maintenance pavement inside air cooling heat radiator assembly and outside air cooling heat radiator assembly
The surface of bundle is all at least provided with a temperature measuring optical cable.
By such scheme, on air cooling heat radiator length component direction, straight horizontal arranges a temperature measuring optical cable or air cooling heat radiation
The surface serpentine of device assembly finned-tube bundle is arranged or square wave arranges a temperature measuring optical cable.
By such scheme, on temperature measuring optical cable, between adjacent temperature transducer (point for measuring temperature), air line distance is not more than 1m
(can be equidistant between each temperature transducer, it is also possible to be Unequal distance, need to carry out setting of different spacing according to thermometric field
Put).
By such scheme, the single channel measurement distance of described distributed optical fiber temperature measurement main frame is not less than 5km, during the longest measurement
Between be not more than 15s, not more than 4 passages, spatial resolution is less than or equal to 2m, and positioning precision is less than or equal to 1m, reserved network interface, string
Mouth, USB, relay dry contact interface, it is achieved field apparatus links；Distributed optical fiber temperature measurement main frame also comprises sound and light alarm instruction
Module, for temperature field information being judged according to alarm algorithm, and temperature information shown, store, record, history
Inquiry
By such scheme, temperature measuring optical cable uses double armor structure, and outer layer arranges environmental protection flame retardant PVC or LSZH sheath, anti-
Pulling force is not less than 100N, Long-term service temperature scope-40 DEG C～85 DEG C, under short-term conditions-60 DEG C～85 DEG C.
The operation principle of the present invention: temperature measuring optical cable is used for transmitting optical signal, the temperature transducer on temperature measuring optical cable is used for feeling
Know the temperature information of the continuous space being distributed in around temperature measuring optical cable；Distributed optical fiber temperature measurement main frame, launches light pulse signal and arrives
Temperature measuring optical cable, by the optical signal carrying temperature field information received and detection temperature measuring optical cable reflects, obtains temperature measuring optical cable
The change information of temperature field surrounding, distributed optical fiber temperature measurement main frame according to corresponding alarm algorithm to the temperature transducers at monitoring point
The temperature of device judges, reaches to carry out pre-alarm or warning during critical design temperature, it is achieved that to air-cooled condenser of power plant
The monitoring in temperature field；Distributed optical fiber temperature measurement main frame by the modes such as network interface, RS485 and relay dry contact and host computer or after
End control system cascades, it is simple to realize field apparatus linkage, it is achieved the intelligence to air cooling system runing adjustment, preventing freeze in winter etc.
Can control, have temperature information shown, store, record, the function such as historical query.
The present invention compared with prior art has the advantages that
1, using the measurement apparatus of the present invention to measure, suitable large area, high spatial resolution occasion use, and solve
Air cooling system area is big, air-side temperature monitoring point is many, measure the present situation of difficulty；
2, the present invention uses distributed optical fiber temperature measurement main frame to constitute an intelligent detector by connecting temperature measuring optical cable,
Alarm region length and alarm point are carried out overall programming, according to different actual application, different alarm points and zone length
Being adjustable to meet actual state, can show the thermal tracking of optical cable in real time, alarm signal can highlight, impaired including optical cable
The determination of some physical location, improves the thermometric intelligence degree to temperature field of air-cooled condenser of power plant；
3, present invention employs temperature measuring optical cable and carry out temperature sensing, the optical cable of single 5 kilometers can cover a 600MW level
The front and back (overall dimensions of each column condenser about grows 80 meters, wide 13 meters, high 10 meters) of two row condensers of generating set, logical
Cross installation support member and temperature measuring optical cable is fixed on condenser finned-tube bundle surface, easy for installation, simplify wiring, reduce into
This, and improve reliability；
4, the present invention is used to carry out temperature survey, it is possible to accomplish the flexible laying to temperature measuring optical cable, also can be according to thermometric
Needing and lay the temperature measuring optical cable of different point for measuring temperature spacing, between adjacent temperature monitoring point, air line distance is not more than 1m, makes
The measurement of temperature must not had dead angle, it is achieved to the accurately monitoring the most in real time of condenser superficial air temperature factory；
5, using the present invention to be conducive to evaluating the heat transfer effect of air cooling system, the maintenance to air cooling system plays directive function,
Reach to save the effect of energy；Hot reflux can be found when natural wind blows air cooling system platform in time and evaluate hot reflux
The order of severity, in order to actively take counter-measure；Can also the most effectively prevent air cooling system to freeze, adjust blower fan in time inverse
Flow back to warm antifreeze.
Accompanying drawing explanation
Fig. 1 is the list group measurement apparatus connection diagram of the temperature field of air-cooled condenser of power plant of the present invention；
Fig. 2 is the enforcement illustration that in the present invention, two groups of air cooling heat radiator assembly medial and lateral are respectively provided with temperature measuring optical cable；
Fig. 3 is that in the present invention, two groups of air cooling heat radiator assembly medial and lateral are respectively provided with survey away from finned-tube bundle 0.1-1m distance
The enforcement illustration of temperature optical cable；
Fig. 4 is to arrange outside two groups of air cooling heat radiator assemblies in temperature measuring optical cable, two groups of air cooling heat radiator assemblies in the present invention
The enforcement illustration of temperature measuring optical cable is set on the maintenance pavement of side；
In figure, 1-air cooling heat radiator assembly, 2-finned-tube bundle, 3-temperature measuring optical cable, 5-distributed optical fiber temperature measurement main frame, 6-examines
Repair pavement, 7-host computer.
Detailed description of the invention
Below according to specific embodiment and combine accompanying drawing, the present invention is further detailed explanation.
As it is shown in figure 1, the measurement apparatus of temperature field of air-cooled condenser of power plant of the present invention, including air cooling heat radiator
Assembly 1, temperature measuring optical cable 3, distributed optical fiber temperature measurement main frame 5 and host computer 7, temperature measuring optical cable 3 is arranged in air cooling heat radiator assembly 1
Side and outside, every temperature measuring optical cable 3 is laid some temperature transducers 4, temperature measuring optical cable 3 and temperature transducer 4 and is connect by optical cable
Continuous parts are connected with distributed optical fiber temperature measurement main frame 5, distributed optical fiber temperature measurement main frame 5 pass through communication interface (network interface, RS485 and
Relay dry contact) it is connected with host computer 7.
The inner side of air cooling heat radiator assembly 1 and the surface of outside finned-tube bundle 2 are at least provided with a temperature measuring optical cable 3.Or
Dispel the heat at least provided with a temperature measuring optical cable 3 or air cooling away from finned-tube bundle 2 surface 0.1-1m distance inside air cooling heat radiator assembly 1
Away from finned-tube bundle 2 surface 0.1-1m distance at least provided with a temperature measuring optical cable 3 outside device assembly 1.Or air cooling heat radiator group
Inside part 1, outside finned-tube bundle 2 surface 0.1-1m distance and air cooling heat radiator assembly 1, away from finned-tube bundle 2 surface
0.1-1m distance is all at least provided with a temperature measuring optical cable 3.Or the inner side of air cooling heat radiator assembly 1, away from finned-tube bundle 2 surface
Outside 0.1-1m distance and air cooling heat radiator assembly 1, the surface of finned-tube bundle 2 is all at least provided with a temperature measuring optical cable 3.Or
Inside person's air cooling heat radiator assembly 1 maintenance pavement 6 on and air cooling heat radiator assembly 1 outside finned-tube bundle 2 surface the most extremely
A piece temperature measuring optical cable 3 is set less.Or on air cooling heat radiator assembly 1 length direction straight horizontal arrange a temperature measuring optical cable 3 or
The surface serpentine of air cooling heat radiator assembly 1 finned-tube bundle 2 is arranged or square wave arranges a temperature measuring optical cable 3.
On temperature measuring optical cable 3, between adjacent temperature transducer 4 (point for measuring temperature), air line distance is not more than 1m, each temperature transducers
Can be equidistant between device 4, it is also possible to be Unequal distance, need to carry out the setting of different spacing according to thermometric field.
The length of temperature measuring optical cable 3 is equal to or slightly less than the length of air cooling heat radiator assembly 1.
Distributed optical fiber temperature measurement main frame 5, transmitting light pulse signal to temperature measuring optical cable 3, by receiving and detection temperature measuring optical cable 3
The optical signal carrying temperature field information reflected, obtains the change information of temperature measuring optical cable 3 temperature field surrounding, according to specifically
Warning strategy carries out early warning, warning, it is achieved that the monitoring to temperature field of air-cooled condenser of power plant；Distributed optical fiber temperature measurement main frame
5 are cascaded with host computer 7 or rear end control system by modes such as network interface, RS485 and relay dry contacts, it is achieved to air cooling
The Based Intelligent Control of system runing adjustment, preventing freeze in winter etc..
Distributed optical fiber temperature measurement main frame 5, single channel measurement distance is not less than 5km, and the longest measurement time is not more than 15s, no
More than 4 passages, spatial resolution is less than or equal to 2m, and positioning precision is less than or equal to 1m, indicates with sound and light alarm, convenient understanding fortune
Row state, reserves the multiple interfaces such as network interface, serial ports, USB, relay dry contact, it is simple to realize field apparatus linkage, according to accordingly
Alarm algorithm temperature field information is judged has the function of pre-alarm or warning, have temperature information is shown,
The functions such as storage, record, historical query.
Temperature measuring optical cable 3 is used for transmitting optical signal, and the temperature transducer 4 on temperature measuring optical cable 3 is distributed in temperature measuring optical for perception
The temperature information of the continuous space around cable 3, temperature measuring optical cable 3 uses double armor structure, environmental protection flame retardant PVC or LSZH sheath,
Having softness, tension, good toughness, it is simple to the feature that construction lays, stretching resistance is not less than 100N, Long-term service temperature scope-40
DEG C～85 DEG C, under short-term conditions-60 DEG C～85 DEG C.
Temperature transducer 4 has temperature-monitoring function, distributed optical fiber temperature measurement main frame 5 according to corresponding alarm algorithm to prison
The temperature of the temperature transducer 4 at measuring point judges, reaches to carry out pre-alarm or warning during critical design temperature.
The measurement apparatus of the present invention passes through 14 passage distributed optical fiber temperature measurement main frame, and external 4 5km temperature measuring optical cables 3 are taken
Build system, it is possible to achieve the measurement to eight row condenser air-side temperature of a 600MW level generating set.
Embodiment 1, if as it is shown in figure 1, utilizing temperature measuring optical cable 3 to lay respectively along the medial and lateral of air cooling heat radiator assembly 1
Dry root temperature measuring optical cable 3, couples together temperature measuring optical cable 3 with distributed optical fiber temperature measurement main frame 5, then by distributed optical fiber temperature measurement main frame
5 are connected with host computer 7.During measurement, sense temperature by each temperature transducer 4 i.e. point for measuring temperature on temperature measuring optical cable 3
Change, temperature information is demodulated out by distributed optical fiber temperature measurement main frame 5, carries out showing, stores, records, reports to the police, historical query
Deng；Temperature that host computer 7 real-time query distributed optical fiber temperature measurement main frame 5 is uploaded and warning message, final realize air cooling
The Based Intelligent Control of system runing adjustment, preventing freeze in winter etc..
Embodiment 2, as a example by 600MW generating set, as in figure 2 it is shown, this generating set has 8 emptying cold heat sink assemblies
1 (only demonstrating 2 rows in Fig. 2), often emptying cold heat sink assembly 1 has 7 Fans, and often the length of emptying cold heat sink assembly 1 is about
80 meters, in the inner side of 2 finned-tube bundles 2 of air cooling heat radiator assembly 1, outer surface lay temperature measuring optical cable 3, each finned-tube bundle
Two row temperature measuring optical cables 3 are laid on 2 surfaces back and forth, and 3,1 the air cooling heat radiator assembly 1 of temperature measuring optical cable laying 4 faces altogether has only to 1
Temperature measuring optical cable 3, the length of temperature measuring optical cable 3 have with air cooling heat radiator assembly 1 as length, temperature measuring optical cable 3 every 1 meter built-in
Temperature sensor 4 (i.e. point for measuring temperature), is connected temperature measuring optical cable 3 and temperature sensor 4 with distributed optical fiber temperature measurement main frame 5, distribution
Formula optical fiber temperature measurement host 5 is connected with host computer 7, can realize whole measurements of to this unit 8 emptying cold heat sink assemblies 1,
Measurement data shown on host computer 7 can realize the temperature regime on the air cooling heat radiator assembly 1 of whole generating set
Correctly assess, thus realize the evaluation of its heat transfer effect, hot reflux situation, the combustion adjustment of air cooling system, preventing freeze in winter
Process etc..
Embodiment 3, as it is shown on figure 3, the present embodiment is the most same as in Example 2, except that, the cloth of temperature measuring optical cable 3
If time, temperature measuring optical cable 3 is arranged on the distance of inside air cooling heat radiator the assembly 1 and outside 0.1-1m away from finned-tube bundle 2, preferably
Distance is 1m.
Embodiment 4, as shown in Figure 4, temperature measuring optical cable 3 is pressed close to the both sides, outside of air cooling heat radiator assembly 1 and is arranged, dissipates at air cooling
Hot device assembly 1 disposed inboard 2 is equidistant or the temperature measuring optical cable 3 of Unequal distance temperature transducer 4 (point for measuring temperature), and temperature measuring optical cable 3 is installed
The side of the maintenance pavement 6 in air cooling heat radiator assembly 1 or downside, fix with clamp or band.
Realize the air cooling heat radiator assembly in power plant is carried out thermometric by assembly of the invention, there is on-the-spot cable laying operation
Simply, networking is convenient, certainty of measurement high, maintenance cost is cheap beneficial effect, for the air cooling system heat transfer effect in power plant
Evaluation, hot reflux situation, the combustion adjustment of air cooling system, the process etc. of preventing freeze in winter provide more preferably more direct foundation.
It should be appreciated that these are only presently preferred embodiments of the present invention, it is not intended to limit the protection of the present invention
Scope.It will be understood by those skilled in the art that can be improved according to the above description or be converted, and all these improvement or conversion
All should be included in protection domain of the presently claimed invention.
Claims (10)
1. a temperature field of air-cooled condenser of power plant measurement apparatus, it is characterised in that: include air cooling heat radiator assembly, temperature measuring optical
Cable, distributed optical fiber temperature measurement main frame and host computer, temperature measuring optical cable is arranged on inside air cooling heat radiator assembly and outside, every thermometric
Multiple temperature transducer is distributed on optical cable, and temperature measuring optical cable is connected with distributed optical fiber temperature measurement main frame by cable connection parts,
Distributed optical fiber temperature measurement main frame is connected with host computer by communication interface；Temperature measuring optical cable had both been used for transmitting light pulse signal, connect again
Receiving the optical signal carrying temperature field information reflected, the temperature transducer on temperature measuring optical cable is distributed in temperature measuring optical for perception
The temperature information of the continuous space around cable；Distributed optical fiber temperature measurement main frame transmitting light pulse signal is to temperature measuring optical cable, by connecing
Receive and detect the optical signal carrying temperature field information that temperature measuring optical cable reflects, obtain the change of temperature measuring optical cable temperature field surrounding
Information.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: air cooling heat radiator
The inner side of assembly and the surface of outside finned-tube bundle are at least provided with a temperature measuring optical cable.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: air cooling heat radiator
Inside assembly away from finned-tube bundle surface 0.1-1m distance at least provided with outside a temperature measuring optical cable or air cooling heat radiator assembly away from
Finned-tube bundle surface 0.1-1m distance is at least provided with a temperature measuring optical cable.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: air cooling heat radiator
Inside assembly, outside finned-tube bundle surface 0.1-1m distance and air cooling heat radiator assembly, away from finned-tube bundle surface 0.1-
1m distance is all at least provided with a temperature measuring optical cable.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: air cooling heat radiator
The inner side of assembly, outside finned-tube bundle surface 0.1-1m distance and air cooling heat radiator assembly, the surface of finned-tube bundle is the most extremely
A piece temperature measuring optical cable is set less.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: air cooling heat radiator
The surface of finned-tube bundle is all at least provided with a temperature measuring optical on maintenance pavement inside assembly and outside air cooling heat radiator assembly
Cable.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: air cooling heat radiator
On length component direction, straight horizontal arranges the surface serpentine setting of a temperature measuring optical cable or air cooling heat radiator assembly finned-tube bundle
Or square wave arranges a temperature measuring optical cable.
8. according to the temperature field of air-cooled condenser of power plant measurement apparatus described in any one of claim 2～7, it is characterised in that:
On temperature measuring optical cable, between adjacent temperature transducer, air line distance is not more than 1m.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: described distributed
The single channel measurement distance of optical fiber temperature measurement host is not less than 5km, and the longest measurement time is not more than 15s, not more than 4 passages, space
Resolution is less than or equal to 2m, and positioning precision is less than or equal to 1m, reserved network interface, serial ports, USB, relay dry contact interface, it is achieved existing
Field device links；Distributed optical fiber temperature measurement main frame also comprises sound and light alarm indicating module, is used for according to alarm algorithm temperature field
Information judges, and temperature information shown, store, record, historical query.
Temperature field of air-cooled condenser of power plant measurement apparatus the most according to claim 1, it is characterised in that: temperature measuring optical cable
Using double armor structure, outer layer arranges environmental protection flame retardant PVC or LSZH sheath, and stretching resistance is not less than 100N, Long-term service temperature
Scope-40 DEG C～85 DEG C, under short-term conditions-60 DEG C～85 DEG C.
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| CN110088552A (en) * | 2016-12-30 | 2019-08-02 | 乔治洛德方法研究和开发液化空气有限公司 | Direct air cooled condenser temperature online monitoring system and method |
| CN108521301A (en) * | 2018-05-24 | 2018-09-11 | 浙江浙能技术研究院有限公司 | A kind of antifreeze method for early warning of air cooling tubes condenser and system |
| CN108645523A (en) * | 2018-07-23 | 2018-10-12 | 中国大唐集团科技工程有限公司 | A kind of Direct Air-Cooled temperature field on-Line Monitor Device and method |
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Application publication date: 20161221 |