CN114353349A - Temperature monitoring system for heat storage tank of trough type photo-thermal power station - Google Patents
Temperature monitoring system for heat storage tank of trough type photo-thermal power station Download PDFInfo
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- CN114353349A CN114353349A CN202111640050.2A CN202111640050A CN114353349A CN 114353349 A CN114353349 A CN 114353349A CN 202111640050 A CN202111640050 A CN 202111640050A CN 114353349 A CN114353349 A CN 114353349A
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- temperature
- storage tank
- heat storage
- monitoring system
- tank
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- 238000005338 heat storage Methods 0.000 title claims abstract description 39
- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 238000005192 partition Methods 0.000 claims description 40
- 238000007405 data analysis Methods 0.000 claims description 11
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000013139 quantization Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 238000004321 preservation Methods 0.000 abstract description 6
- 150000003839 salts Chemical class 0.000 description 12
- 238000009529 body temperature measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides a temperature monitoring system for a heat storage tank of a slot type photo-thermal power station, which comprises the heat storage tank, a first temperature sensor and a plurality of second temperature sensors, wherein the first temperature sensor is arranged right above the heat storage tank and used for monitoring the temperature of each subarea at the top of the heat storage tank; the plurality of second temperature sensors surround the tank body average distribution of the heat storage tank and are used for monitoring the temperature of each subarea of the tank body of the heat storage tank, and the second temperature sensors correspond to the subareas of the tank body one to one. According to the technical scheme, the heat preservation performance of the heat storage tank and the heat dissipation loss of the tank body can be monitored in real time, the structure is simple, and the cost is low.
Description
Technical Field
The invention relates to the technical field of photo-thermal power stations, in particular to a temperature monitoring system for a heat storage tank of a slot type photo-thermal power station.
Background
At present, the heat storage media of the groove type and tower type photo-thermal power stations are all prepared by mixing potassium salt and sodium salt according to a certain proportion. Typically, a photothermal power station is equipped with two cylindrical salt tanks, cold and hot, with a diameter of about 40 meters and a height of about 14 meters. The heat insulating material of the cylindrical salt tank is generally aluminum silicate, the thickness of the tank body is about 40 cm, and the outer layer of the tank body is wrapped by aluminum skin. Along with the increase of the operation time of the system and the rain leakage at the top of the tank body and other reasons, the heat preservation performance can be gradually deteriorated, the heat dissipation loss of the salt tank can be continuously increased, and the economical efficiency of the heat storage salt tank is reduced. Therefore, the salt tank needs to be subjected to temperature measurement to check whether the tank body is degraded or not. The existing salt tank temperature measurement is the multi-point temperature measurement of a tank body, mainly measures the temperature of salt, and cannot reflect the heat preservation performance of the salt tank. In addition, the salt tank is measured manually by regularly utilizing an infrared handheld temperature measuring gun, and the heat dissipation capacity of the tank body cannot be reflected effectively in real time.
Disclosure of Invention
The invention provides a temperature monitoring system for a heat storage tank of a slot type photo-thermal power station, which can monitor the heat preservation performance of the heat storage tank and the heat dissipation loss of a tank body in real time, and has the advantages of simple structure and low cost.
The invention provides a temperature monitoring system for a heat storage tank of a slot type photo-thermal power station, which comprises the heat storage tank, a first temperature sensor and a plurality of second temperature sensors,
the first temperature sensor is arranged right above the heat storage tank and used for monitoring the temperature of each subarea at the top of the heat storage tank;
the plurality of second temperature sensors surround the tank body average distribution of the heat storage tank and are used for monitoring the temperature of each subarea of the tank body of the heat storage tank, and the second temperature sensors correspond to the subareas of the tank body one to one.
Further, the field of view of the first temperature sensor covers the top of the thermal storage tank.
Further, the top of the heat storage tank comprises a top center area and M × N first partitions, wherein the top of the heat storage tank is circular, M is the number of layers extending outwards from the circle center, and N is the number of areas evenly divided in the direction perpendicular to the top.
Further, the first partition has independent and consecutive numbering.
Further, the body of the heat storage tank is cylindrical, the body of the tank includes a plurality of second partitions, and the field of view of each second temperature sensor covers the corresponding second partition.
Further, the coverage areas of the second partitions are the same, and the second partitions comprise X × Y partition units.
Further, the partition unit is rectangular.
Further, the partition units have independent and consecutive numbers.
Further, the temperature monitoring system also comprises a data analysis device,
the data analysis device is respectively connected with the first temperature sensor and the plurality of second temperature sensors, and is used for receiving temperature information monitored by the first temperature sensor and the plurality of second temperature sensors and determining an abnormal temperature area according to the temperature information.
Further, determining an area with abnormal temperature according to the temperature information includes:
analyzing the temperature information to obtain a temperature distribution map of the heat storage tank;
carrying out grid data quantization on the temperature distribution map to obtain the actual temperature value of each partition;
comparing the actual temperature value with a preset temperature value;
and determining the partition with the actual temperature value being greater than the preset temperature value as an area with abnormal temperature.
By applying the technical scheme of the invention, the heat insulation performance of the heat storage tank and the heat dissipation loss of the tank body can be monitored in real time, the structure is simple, and the cost is low.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
fig. 1 shows a schematic structural diagram of a temperature monitoring system of a thermal storage tank of a trough type photothermal power station according to a first embodiment;
fig. 2 shows a schematic view of a partition of the top of the thermal storage tank 100;
fig. 3 shows a schematic sectional view of the tank body of the thermal storage tank 100;
fig. 4 shows a schematic structural diagram of a system for monitoring the temperature of a thermal storage tank of a trough-type photothermal power station according to a second embodiment.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
As shown in fig. 1, the system for monitoring the temperature of the thermal storage tank of the trough type photothermal power station according to the first embodiment includes the thermal storage tank 100, a first temperature sensor 200, and a plurality of second temperature sensors 300.
The first temperature sensor 200 is disposed directly above the thermal storage tank 100, and is configured to monitor the temperature of each partition on the top of the thermal storage tank 100. The field of view of the first temperature sensor 200 covers the top of the thermal storage tank 100.
The top of the thermal storage tank 100 comprises a top central region 110 and M x N first partitions 120. The top of the heat storage tank 100 is circular, M is the number of layers extending outward from the center of circle, and N is the number of areas equally divided in the direction perpendicular to the top. Taking fig. 2 as an example, the top of the thermal storage tank 100 is divided into 3 layers from inside to outside and is divided into 8 sectors. The first partition 120 has separate and consecutive numbering, as shown at T1-T24 in FIG. 2. The top central region 110 also has a number T25.
The plurality of second temperature sensors 300 are evenly distributed around the body of the thermal storage tank 100 to monitor the temperature of each section of the body of the thermal storage tank 100. The second temperature sensors 300 correspond to the partitions of the tank body one to one. The first temperature sensor 200 and the second temperature sensor 300 in the present embodiment may be a thermal imager.
The body of the thermal storage tank 100 is cylindrical and includes a plurality of second partitions 130. The field of view of each second temperature sensor 300 covers the corresponding second zone 130. The second partitions 130 have the same coverage area and each include X × Y partition units 131. The partition unit 131 is rectangular. The partition units 131 have independent and consecutive numbers. For example, the monitoring system is provided with 3 second temperature sensors 300, which respectively correspond to A, B, C three sections of the tank body. As shown in fig. 3, the planar pattern formed by expanding A, B, C is rectangular, and A, B, C three partitions have equal areas and are all divided into 16 × 16 partition units 131. The partition unit number of the first row and the first column of the partition A is A01, the partition unit number of the first row and the second column of the partition A is A02, and so on; similarly, the partition unit number of the first row and the first column of the B partition is B01, and the partition unit number of the first row and the first column of the C partition is C01.
The temperature monitoring system of slot type light and heat power station heat storage tank of this embodiment, through first temperature sensor directly over the heat storage tank centers on a plurality of second temperature sensor of the body average distribution of heat storage tank can monitor the thermal insulation performance and the body heat dissipation loss of heat storage tank in real time, simple structure, it is with low costs.
In another embodiment, as shown in fig. 4, the system for monitoring the temperature of the thermal storage tank of the trough type photothermal power plant further comprises a data analysis device 400.
The data analysis device 400 is connected to the first temperature sensor 200 and the plurality of second temperature sensors 300, respectively. The data analysis device 400 receives the temperature information monitored by the first temperature sensor 200 and the plurality of second temperature sensors 300, and determines an area of temperature abnormality according to the temperature information.
Specifically, the data analysis device 400 analyzes the temperature information to obtain a temperature distribution map of the heat storage tank, then performs mesh data quantization on the temperature distribution map to obtain an actual temperature value of each partition, and compares the actual temperature value with a preset temperature value. And determining the partition with the actual temperature value being greater than the preset temperature value as an area with abnormal temperature. For example, the actual temperature distribution map of the thermal storage tank 100 may be simulated and displayed digitally in the data analysis device 400, and the temperature of each section of the thermal storage tank 100 may be observed at a glance, and if the temperature of the section with the top number T1 on the thermal storage tank 100 exceeds the preset temperature value corresponding to the section, it may be determined that the leakage occurs in the section T1. For another example, the temperature of the partition with the number of A32 in the tank body exceeds the preset temperature value corresponding to the partition, and the abnormal temperature condition of the partition A32 can be determined. At this time, the data analysis device 400 may send a prompt message to the operator to find out the abnormal temperature condition in time. In addition, the surface temperature of the tank body is monitored and collected for a long time, so that the heat preservation performance of the tank body can be evaluated, and abnormal conditions (leakage) can be discovered in time.
The invention utilizes the infrared imager to monitor the surface temperature of the tank body in real time, develops a special background temperature processing program aiming at the characteristics of the salt tank, displays the temperature of the salt tank in real time, and can effectively and effectively find the conditions of salt tank leakage or heat preservation abnormity and the like in time. According to long-period monitoring and analysis, the heat-insulating property of the tank body can be evaluated.
The temperature information that slot type light and heat power station heat storage tank temperature monitoring system of this embodiment monitored first temperature sensor and a plurality of second temperature sensor through data analysis device handles the analysis, can confirm the regional of temperature anomaly in time, need not the manual temperature measurement of manual scene of manual work, makes things convenient for operating personnel to maintain, reduces the maintenance cost.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A temperature monitoring system for a heat storage tank of a slot type photo-thermal power station is characterized by comprising the heat storage tank, a first temperature sensor and a plurality of second temperature sensors,
the first temperature sensor is arranged right above the heat storage tank and used for monitoring the temperature of each subarea at the top of the heat storage tank;
the plurality of second temperature sensors surround the tank body average distribution of the heat storage tank and are used for monitoring the temperature of each subarea of the tank body of the heat storage tank, and the second temperature sensors correspond to the subareas of the tank body one to one.
2. The temperature monitoring system of claim 1, wherein a field of view of the first temperature sensor covers a top of the thermal storage tank.
3. The system of claim 1, wherein the top of the thermal storage tank comprises a top central region and M x N first partitions, wherein the top of the thermal storage tank is circular, M is the number of layers extending outward from the center of the circle, and N is the number of regions evenly divided perpendicular to the top.
4. The system of claim 3, wherein the first zone has an independent and consecutive number.
5. The temperature monitoring system of claim 1, wherein the thermal storage tank has a cylindrical tank body comprising a plurality of second zones, and wherein the field of view of each second temperature sensor covers a corresponding second zone.
6. The system according to claim 5, wherein the second zones have the same footprint and each comprise X X Y zone units.
7. The temperature monitoring system of claim 6, wherein the partition unit is rectangular.
8. The system of claim 6, wherein the zone units have independent and consecutive numbers.
9. The temperature monitoring system of claim 1, further comprising a data analysis device,
the data analysis device is respectively connected with the first temperature sensor and the plurality of second temperature sensors, and is used for receiving temperature information monitored by the first temperature sensor and the plurality of second temperature sensors and determining an abnormal temperature area according to the temperature information.
10. The system of claim 9, wherein determining the region of temperature anomaly from the temperature information comprises:
analyzing the temperature information to obtain a temperature distribution map of the heat storage tank;
carrying out grid data quantization on the temperature distribution map to obtain the actual temperature value of each partition;
comparing the actual temperature value with a preset temperature value;
and determining the partition with the actual temperature value being greater than the preset temperature value as an area with abnormal temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111640050.2A CN114353349A (en) | 2021-12-29 | 2021-12-29 | Temperature monitoring system for heat storage tank of trough type photo-thermal power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111640050.2A CN114353349A (en) | 2021-12-29 | 2021-12-29 | Temperature monitoring system for heat storage tank of trough type photo-thermal power station |
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| CN114353349A true CN114353349A (en) | 2022-04-15 |
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| WO2013013200A1 (en) * | 2011-07-20 | 2013-01-24 | Trackpoint Systems, Llc | System, method, and device for measuring and reporting changing levels of liquids in storage tanks |
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| CN204177483U (en) * | 2014-10-31 | 2015-02-25 | 山东康威通信技术股份有限公司 | A kind of cable splice based on non-contact infrared array and contact temperature measuring equipment |
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| CN109781346A (en) * | 2019-01-30 | 2019-05-21 | 青岛鸿瑞电力工程咨询有限公司 | A kind of high temperature melting salt cellar leakage real time on-line monitoring device and detection method |
| CN111284931A (en) * | 2018-12-10 | 2020-06-16 | 宁波沈南知识产权运营有限公司 | Distributed storage tank safety monitoring device |
| CN111879019A (en) * | 2020-06-12 | 2020-11-03 | 浙江大学 | System for detecting fused salt leakage of photo-thermal power generation heat storage device by utilizing electrode plate |
-
2021
- 2021-12-29 CN CN202111640050.2A patent/CN114353349A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013013200A1 (en) * | 2011-07-20 | 2013-01-24 | Trackpoint Systems, Llc | System, method, and device for measuring and reporting changing levels of liquids in storage tanks |
| CN103267578A (en) * | 2013-04-28 | 2013-08-28 | 山东康威通信技术股份有限公司 | Electric power high-voltage cable connector non-contact infrared temperature measurement system and temperature measurement method |
| CN204177483U (en) * | 2014-10-31 | 2015-02-25 | 山东康威通信技术股份有限公司 | A kind of cable splice based on non-contact infrared array and contact temperature measuring equipment |
| CN105547511A (en) * | 2016-01-18 | 2016-05-04 | 中国计量学院 | Vaporizing furnace wall fault monitoring and positioning device and method based on fault grid inspection tour |
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