CN109781346A - A kind of high temperature melting salt cellar leakage real time on-line monitoring device and detection method - Google Patents
A kind of high temperature melting salt cellar leakage real time on-line monitoring device and detection method Download PDFInfo
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- CN109781346A CN109781346A CN201910088706.0A CN201910088706A CN109781346A CN 109781346 A CN109781346 A CN 109781346A CN 201910088706 A CN201910088706 A CN 201910088706A CN 109781346 A CN109781346 A CN 109781346A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 150
- 230000008018 melting Effects 0.000 title claims abstract description 51
- 238000002844 melting Methods 0.000 title claims abstract description 51
- 238000012806 monitoring device Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 title abstract description 5
- 239000013307 optical fiber Substances 0.000 claims abstract description 95
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 239000004927 clay Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000004642 Polyimide Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 208000004860 Blast Crisis Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
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- Fire-Detection Mechanisms (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of high temperature melting salt cellar leakage real time on-line monitoring device and detection methods, belong to temperature monitoring technique field.The monitoring device winds fused salt pot sidewall temperature-measuring optical fiber in high temperature melting salt cellar in the fused salt tank insulating layer at the first pre-determined distance of tank wall from tank body top to lower part helical；Fused salt pot bottom temperature-measuring optical fiber is laid using round about manner at the second pre-determined distance of distance high-temperature fused salt tank tank bottom bottom；Head and the tail are using annular incoming fiber optic thermometric host after the completion of the fused salt pot sidewall temperature-measuring optical fiber of high-temperature molten salt tank side wall and the fused salt pot bottom temperature-measuring optical fiber winding of high-temperature molten salt tank bottom；Optical fiber temperature measurement host is communicated to setting by communication cable and is controlling indoor fire alarming and controlling host.High temperature melting salt cellar leakage real time on-line monitoring device provided by the invention and detection method solve the problems, such as that the leakage of solar power station fused salt tank can not real-time monitoring.
Description
Technical field
The invention belongs to temperature monitoring technique fields, and in particular to a kind of high temperature melting salt cellar leakage real time on-line monitoring device
And detection method.
Background technique
With the rise and development of domestic and international solar energy generation technology in recent years, especially to have large volume high temperature melting salt cellar
The development of the slot type and solar power tower of energy-storage function is more and more paid attention to by various countries.But there are a distinct issues i.e.
How effectively monitoring the leakage of power station energy-storage system fused salt tank, there is presently no be resolved.This problem has perplexed both at home and abroad
Designing institute is for a long time.Since (hot tank temperature degree is up to 565 to temperature temperature of molten salt height in solar power station heat reservoir fused salt tank
DEG C), tank volume is big (usually height is in more than ten meters, tank diameter in thirty or forty rice), and tank body foundation structure is complicated, using routine
Thermocouple measurement fused salt leakage, then but can up to up to a hundred with regard to the quantity of basal temperature measurement thermocouple, not only install
Problematic, lead-out wire perforation can also destroy the heat insulation on basis after installation, to generate blast phase destruction to basis, sternly
The safe operation of tank body is threatened again.Additionally due to currently without effective fused salt tank leakage monitoring means, once fused salt tank occurs
Leakage is found not in time, and huge economic loss can be brought to power station.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of high temperature melting salt cellar leakage real time on-line monitoring device and inspections
Survey method solves the problems, such as that the leakage of solar power station fused salt tank can not real-time monitoring.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of high temperature melting salt cellar leakage real time on-line monitoring device, including high temperature melting salt cellar, fused salt tank insulating layer, fused salt pot sidewall
Temperature-measuring optical fiber, fused salt pot bottom temperature-measuring optical fiber, optical fiber temperature measurement host, fire alarming and controlling host and communication cable；In high temperature melting
Salt cellar winds fused salt tank in the fused salt tank insulating layer at the first pre-determined distance of tank wall from tank body top to lower part helical
Side wall temperature-measuring optical fiber；It is surveyed at the second pre-determined distance of distance high-temperature fused salt tank tank bottom bottom using round about manner laying fused salt pot bottom
Warm optical fiber；The fused salt pot sidewall temperature-measuring optical fiber of high-temperature molten salt tank side wall and the fused salt pot bottom of high-temperature molten salt tank bottom
Head and the tail are using annular incoming fiber optic thermometric host after the completion of temperature-measuring optical fiber winding；Optical fiber temperature measurement host is communicated by communication cable
Indoor fire alarming and controlling host is being controlled to setting.
Technical solution of the present invention further improvement lies in that: fused salt pot sidewall temperature-measuring optical fiber can also be in fused salt tank insulating layer
It is interior from tank body lower part to top spiral winding.
Technical solution of the present invention further improvement lies in that: high-temperature molten salt pot bottom is disposed with base course from top to bottom
With expanded clay layer, fused salt pot bottom temperature-measuring optical fiber is arranged in expanded clay layer.
Technical solution of the present invention further improvement lies in that: first pre-determined distance be 100-150mm.
Technical solution of the present invention further improvement lies in that: second pre-determined distance be 800mm.
Technical solution of the present invention further improvement lies in that: fused salt pot sidewall temperature-measuring optical fiber is in high-temperature molten salt tank side wall
Winding distance be 500mm.
Technical solution of the present invention further improvement lies in that: between fused salt pot bottom temperature-measuring optical fiber horizontal laying distance about
500mm。
Technical solution of the present invention further improvement lies in that: the laying area and high-temperature molten salt of fused salt pot bottom temperature-measuring optical fiber
Tank tank bottom size is equivalent and laying area should be immediately below tank bottom.
Technical solution of the present invention further improvement lies in that: fused salt pot sidewall temperature-measuring optical fiber and fused salt pot bottom temperature-measuring optical fiber
It is all made of the high-temperature resistant optical fiber of polyimide coating or metal coating.
A kind of high temperature melting salt cellar leakage realtime on-line monitoring method, includes the following steps:
1), the temperature value of optical fiber temperature measurement host real time monitoring temperature-measuring optical fiber；
2), optical fiber temperature measurement host calculates ascensional range and the position for simultaneously and positioning temperature-measuring optical fiber steep temperature rise at any time；
3), when temperature-measuring optical fiber increasing extent of temperature is suddenly greater than 15 DEG C, feedback is to fire alarming and controlling host and alarms, and takes measures to prevent
Only fault spread.
By adopting the above-described technical solution, the technological progress achieved by the present invention is:
A kind of high temperature melting salt cellar provided by the invention reveals real time on-line monitoring device, be utilized temperature-measuring optical fiber temperature measurement accuracy it is high,
The features such as positioning accuracy is high, system structure is simple, long service life, can be realized the reality to high temperature, the leakage of large volume fused salt tank
When monitor.The real-time prison to entire fused salt tank body just can be completed with unification platform optical fiber host using two temperature-measuring optical fibers simultaneously
It surveys, relative to the method using several hundred a temperature instrumentations, which has more economy, safety and reliability.
A kind of high temperature melting salt cellar provided by the invention reveals real time on-line monitoring device, selects apart from tank skin 100-150mm
Winding fused salt pot sidewall temperature-measuring optical fiber in place's is the temperature difference ratio because by calculating fused salt in temperature and tank skin and the tank body at this
It is larger, when there is fused salt leakage in tank wall commissure, since the warm temperature measurement accuracy of temperature-measuring optical fiber reaches 1 DEG C, spatial resolution
Reach 0.1m, then it can be detected in time at leakage and high temperature leakage fused salt flows through the temperature at place and sharply increases, and can be accurate
Positioning leakage position.
A kind of high temperature melting salt cellar provided by the invention reveals real time on-line monitoring device, is applying at tank bottom about 800mm
If thermometric fused salt pot bottom temperature-measuring optical fiber be should be by simulation calculate this at temperature be about to locate between 220 DEG C -260 DEG C
On fused salt freezing point, but it is bigger with temperature of molten salt in tank, once the temperature that operations staff measures according to optical fiber occurs for leakage
Difference variation more easily determines the generation of leakage.
A kind of high temperature melting salt cellar provided by the invention reveals real time on-line monitoring device, fused salt pot sidewall temperature-measuring optical fiber and molten
Head and the tail use annular incoming fiber optic host to influence to ensure optical fiber Single Point of Faliure not after the completion of the laying of salt pot bottom temperature-measuring optical fiber
The measurement of whole system.Optical-fiber temperature measuring value and spatial orientation information feed back the fire to control room by temperature-measuring optical fiber host
Alarm host machine enables operations staff timely to find the generation of leakage and determines the general location at leakage.It has taken in time
Effect measure prevents accident further expansion.
A kind of high temperature melting salt cellar provided by the invention reveals real time on-line monitoring device, according to solar power station temperature of molten salt
Height, for cold salt temperature be greater than 290 DEG C, hot salt temperature be greater than 500 DEG C, for about 100 DEG C of the temperature at side wall fibre optic installations-
150 DEG C or so, the temperature at pot bottom fibre optic installations be about between 220 DEG C -260 DEG C, it is therefore desirable to use high-temperature resistant optical fiber, such as
There is the high-temperature resistant optical fiber of polyimide coating or metal coating, guarantees the durability practicability and stability of device.
Detailed description of the invention
Fig. 1 is a kind of schematic illustration of high temperature melting salt cellar leakage real time on-line monitoring device provided by the invention；
Fig. 2 is a kind of the schematic diagram of the section structure of high temperature melting salt cellar leakage real time on-line monitoring device provided by the invention；
Wherein, 1, high temperature melting salt cellar, 2, fused salt pot sidewall temperature-measuring optical fiber, 3, fused salt pot bottom temperature-measuring optical fiber, 4, optical fiber temperature-measurement master
Machine, 5, fire alarming and controlling host, 6, communication cable, 7, fused salt tank insulating layer, 8, base course, 9, expanded clay layer.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and embodiments:
As shown in Figure 1, a kind of schematic illustration of high temperature melting salt cellar leakage real time on-line monitoring device provided by the invention, including
High temperature melting salt cellar 1, fused salt tank insulating layer 7, fused salt pot sidewall temperature-measuring optical fiber 2, fused salt pot bottom temperature-measuring optical fiber 3, optical fiber temperature-measurement master
Machine 4, fire alarming and controlling host 5 and communication cable 6；In fused salt tank of the high temperature melting salt cellar 1 at tank wall 100-150mm
Fused salt pot sidewall temperature-measuring optical fiber 2 is wound in insulating layer 7 from tank body top to lower part helical；
Further, fused salt pot sidewall temperature-measuring optical fiber 2 can also twine in fused salt tank insulating layer 7 from tank body lower part to top spiral
Around the direction wound up and down is without limitation.
Optical fiber head and the tail are connect using annular after the completion of the fused salt pot sidewall temperature-measuring optical fiber 2 of 1 tank wall of high temperature melting salt cellar is wound
Enter optical fiber temperature measurement host 4；Fused salt pot bottom thermometric is laid using round about manner at 1 tank bottom bottom 800mm of distance high-temperature fused salt tank
Optical fiber 3；Further, the distance of 3 distance high-temperature fused salt tank of fused salt pot bottom temperature-measuring optical fiber, 1 tank bottom bottom can be 700-
900mm。
Specifically, a kind of high temperature melting salt cellar leakage real time on-line monitoring device provided by the invention provided in conjunction with attached drawing 2
The schematic diagram of the section structure, 1 bottom of high temperature melting salt cellar is disposed with base course 8 and expanded clay layer 9, fused salt tank from top to bottom
Bottom temperature-measuring optical fiber 3 is arranged in expanded clay layer 9.
The fused salt tank of 1 tank base of fused salt pot sidewall temperature-measuring optical fiber 2 and high temperature melting salt cellar of 1 tank wall of high temperature melting salt cellar
Head and the tail are using annular incoming fiber optic thermometric host 4 after the completion of the winding of bottom temperature-measuring optical fiber 3；Optical fiber temperature measurement host 4 passes through communication
The communication of cable 6 is controlling indoor fire alarming and controlling host 5 to setting.
Specifically, fused salt pot sidewall temperature-measuring optical fiber 2 is 500mm in the winding distance of 1 tank wall of high temperature melting salt cellar.
Similarly, specifically, horizontal laying distance about 500mm, and fused salt pot bottom thermometric between fused salt pot bottom temperature-measuring optical fiber 3
The laying area of optical fiber 3 is equal with 1 tank bottom size of high temperature melting salt cellar and laying area should be immediately below tank bottom.
Further, fused salt pot sidewall temperature-measuring optical fiber 2 and fused salt pot bottom temperature-measuring optical fiber 3 have been all made of polyimide coating
Or the high-temperature resistant optical fiber of metal coating.
Further, a kind of high temperature melting salt cellar leakage realtime on-line monitoring method provided according to the present invention, is applied at this
On the high temperature melting salt cellar leakage real time on-line monitoring device that invention provides, include the following steps:
1), the temperature value of optical fiber temperature measurement host real time monitoring temperature-measuring optical fiber；
2), optical fiber temperature measurement host calculates ascensional range and the position for simultaneously and positioning temperature-measuring optical fiber steep temperature rise at any time；
3), when temperature-measuring optical fiber increasing extent of temperature is suddenly greater than 15 DEG C, feedback is to fire alarming and controlling host and alarms, and takes measures to prevent
Only fault spread.
Specifically, when there is fused salt leakage in 1 tank wall commissure of high temperature melting salt cellar, due to fused salt pot sidewall temperature-measuring optical fiber
2 warm temperature measurement accuracy reach 1 DEG C, spatial resolution reach 0.1m, then it can be detected in time at leakage and high temperature leakage is molten
The temperature that salt flows through place sharply increases, and when more than 15 DEG C, and leakage position can be accurately positioned.Optical-fiber temperature measuring value and space are fixed
Position information arrives the fire alarming and controlling host 5 of control room by optical fiber temperature measurement host 4 and the feedback of communication cable 6, makes operations staff
It can timely find the generation of leakage and determine the general location at leakage, adopt an effective measure prevents accident further in time
Expand.
Similarly, when 1 pot bottom fused salt of high temperature melting salt cellar is revealed, high-temperature molten salt seeps under base course and expanded clay layer,
Until touching fused salt pot bottom temperature-measuring optical fiber 3, fused salt pot bottom temperature-measuring optical fiber 3 can promptly and accurately perceive the liter of temperature
High-speed is more than 15 DEG C/min, and can determine that the spatial position of temperature change, these information by optical fiber temperature measurement host 4 and are led to
Control room fire alarming and controlling host 5 is arrived in the communication of communication cable 6, and operations staff is enable timely to find generation and the determination of leakage
General location at leakage, adopt an effective measure prevents accident further expansion in time.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of high temperature melting salt cellar reveals real time on-line monitoring device, it is characterised in that: including high temperature melting salt cellar (1), fused salt tank
Insulating layer (7), fused salt pot sidewall temperature-measuring optical fiber (2), fused salt pot bottom temperature-measuring optical fiber (3), optical fiber temperature measurement host (4), fire report
Alert control host (5) and communication cable (6)；In fused salt tank of the high temperature melting salt cellar (1) at the first pre-determined distance of tank wall
Fused salt pot sidewall temperature-measuring optical fiber (2) are wound from tank body top to lower part helical in insulating layer (7)；Distance high-temperature fused salt tank (1) tank
Using round about manner laying fused salt pot bottom temperature-measuring optical fiber (3) at the second pre-determined distance of bottom bottom；High temperature melting salt cellar (1) tank body side
The fused salt pot sidewall temperature-measuring optical fiber (2) of wall and the fused salt pot bottom temperature-measuring optical fiber (3) of high temperature melting salt cellar (1) tank base have been wound
Cheng Houjun head and the tail are using annular incoming fiber optic thermometric host (4)；Optical fiber temperature measurement host (4) is communicated by communication cable (6) to setting
It sets and is controlling indoor fire alarming and controlling host (5).
2. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: fused salt tank
Side wall temperature-measuring optical fiber (2) can also be in fused salt tank insulating layer (7) from tank body lower part to top spiral winding.
3. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: high temperature melting
Salt cellar (1) bottom is disposed with base course (8) and expanded clay layer (9) from top to bottom, and fused salt pot bottom temperature-measuring optical fiber (3) is set
It sets in expanded clay layer (9).
4. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: described the
One pre-determined distance is 100-150mm.
5. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: described the
Two pre-determined distances are 800mm.
6. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: fused salt tank
Side wall temperature-measuring optical fiber (2) is 500mm in the winding distance of high temperature melting salt cellar (1) tank wall.
7. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: fused salt tank
Horizontal laying distance about 500mm between bottom temperature-measuring optical fiber (3).
8. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: fused salt tank
The laying area of bottom temperature-measuring optical fiber (3) be equal with high temperature melting salt cellar (1) tank bottom size and laying area should tank bottom just
Lower section.
9. a kind of high temperature melting salt cellar according to claim 1 reveals real time on-line monitoring device, it is characterised in that: fused salt tank
Side wall temperature-measuring optical fiber (2) and fused salt pot bottom temperature-measuring optical fiber (3) are all made of the high temperature resistant of polyimide coating or metal coating
Optical fiber.
10. a kind of high temperature melting salt cellar reveals realtime on-line monitoring method, which comprises the steps of:
1), the temperature value of optical fiber temperature measurement host real time monitoring temperature-measuring optical fiber；
2), optical fiber temperature measurement host calculates ascensional range and the position for simultaneously and positioning temperature-measuring optical fiber steep temperature rise at any time；
3), when temperature-measuring optical fiber increasing extent of temperature is suddenly greater than 15 DEG C, feedback is to fire alarming and controlling host and alarms, and takes measures to prevent
Only fault spread.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910088706.0A CN109781346A (en) | 2019-01-30 | 2019-01-30 | A kind of high temperature melting salt cellar leakage real time on-line monitoring device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910088706.0A CN109781346A (en) | 2019-01-30 | 2019-01-30 | A kind of high temperature melting salt cellar leakage real time on-line monitoring device and detection method |
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| CN109781346A true CN109781346A (en) | 2019-05-21 |
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Cited By (3)
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| CN110342130A (en) * | 2019-06-28 | 2019-10-18 | 浙江大学 | A kind of system of the array distributed monitoring fused salt storage tank leakage of thinning FBG |
| CN113063518A (en) * | 2021-03-24 | 2021-07-02 | 山东特种设备检验检测集团有限公司 | Atmospheric storage tank bottom plate corrosion monitoring method based on optical fiber sensing |
| CN114353349A (en) * | 2021-12-29 | 2022-04-15 | 中广核太阳能德令哈有限公司 | Temperature monitoring system for heat storage tank of trough type photo-thermal power station |
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