Intelligent detection system and method for solar photo-thermal power generation organic heat carrier

Abstract

The invention discloses an intelligent detection system and method for a solar photo-thermal power generation organic heat carrier, and relates to the technical field of organic heat carrier detection, and the system comprises a simulation test device which is used for realizing the cycle operation of the organic heat carrier and extracting an organic heat carrier sample; the gas-liquid separation and sampling device is used for carrying out gas-liquid separation on the organic heat carrier sample and respectively sampling a separated gas-phase product and a separated liquid-phase product; the first chromatographic instrument is used for detecting the components of the gas-phase product to obtain the components of the gas-phase product; the second chromatographic instrument is used for detecting the components of the liquid-phase product to obtain the components of the liquid-phase product; and the data processing device is used for calculating a performance index result of the organic heat carrier sample based on the components of the gas-phase product and the components of the liquid-phase product. According to the application, real-time monitoring of the deterioration condition of the organic heat carrier can be rapidly and accurately realized.

Description

Technical Field

[0001] The present application relates to the technical field of organic heat carrier detection, and in particular to an intelligent detection system and method for organic heat carriers for solar thermal power generation. Background Art

[0002] Organic heat carrier is a general term for organic substances used as heat transfer medium. Organic heat carrier includes all organic media used for indirect heat transfer, such as heat transfer fluid, heat transfer oil, organic heat transfer medium, heat medium, etc. According to the chemical composition, it can be classified into synthetic organic heat carrier and mineral oil type organic heat carrier; according to the boiling range, it can be classified into gas phase organic heat carrier and liquid phase organic heat carrier.

[0003] In the inspection and monitoring of heat transfer and storage media in solar thermal power generation systems, the performance evaluation method of organic heat carriers has problems such as long detection time, high cost, delayed results, and untrue evaluation results. It cannot timely reflect the changes and true status of the heat transfer medium in the system, posing a hidden danger to the safe operation of the heat transfer and storage system. Summary of the invention

[0004] The purpose of the present application is to provide an intelligent detection system and method for organic heat carriers in solar thermal power generation, which can quickly and accurately realize real-time monitoring of the deterioration of organic heat carriers.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides an intelligent detection system for organic heat carriers for solar thermal power generation, and the intelligent detection system for organic heat carriers for solar thermal power generation comprises:

[0007] The simulation test device is used to realize the circulation operation of the organic heat carrier and to collect samples of the organic heat carrier.

[0008] The gas-liquid separation and sampling device is connected to the simulation test device and is used to perform gas-liquid separation on the organic heat carrier sample and to sample the separated gas phase product and liquid phase product respectively.

[0009] The first chromatograph is connected to the gas-liquid separation and sampling device and is used to detect the components of the gas phase product to obtain the components of the gas phase product.

[0010] The second chromatograph is connected to the gas-liquid separation and sampling device and is used to detect the components of the liquid phase product to obtain the components of the liquid phase product.

[0011] A data processing device is connected to the first chromatograph and the second chromatograph, and is used to calculate the performance index results of the organic heat carrier sample based on the components of the gas phase product and the components of the liquid phase product; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of the low boiling point substances, the composition and content of the high boiling point substances, the deterioration rate, and the long-period data statistical trend line.

[0012] Optionally, the gas-liquid separation and sampling device comprises:

[0013] The online sample gas-liquid separation storage tank is connected to the simulation test device and is used to perform gas-liquid separation on the organic heat carrier sample to obtain a gas phase product and a liquid phase product.

[0014] The gas online sampling device is connected to the online sample gas-liquid separation storage tank and is used to sample the gas phase product.

[0015] The liquid online sampling device is connected to the online sample gas-liquid separation storage tank and is used for sampling the liquid phase product.

[0016] Optionally, the solar thermal power generation organic heat carrier intelligent detection system further includes:

[0017] The first pressure control device is connected to the simulation test device and is used to collect the organic heat carrier sample.

[0018] A cooling circulation device is connected to the online sample gas-liquid separation storage tank and is used to separate and cool the gas phase product and the liquid phase product.

[0019] The second pressure control device is connected to the gas-liquid separation and sampling device and is used to discharge the gas phase product.

[0020] The first signal starting unit is respectively connected to the first chromatograph, the second chromatograph and the second pressure control device, and is used to send a starting signal to the first chromatograph, the second chromatograph and the second pressure control device when the temperature of the gas product and the liquid product drops below a preset temperature.

[0021] The second signal starting unit is connected to the gas online sampling device and the liquid online sampling device respectively, and is used to send sampling signals to the gas online sampling device and the liquid online sampling device after the first chromatograph and the second chromatograph are started.

[0022] Optionally, the first chromatograph comprises: a ten-way valve, a first six-way valve, a second six-way valve, a TCD detector and a first FID detector.

[0023] The outlet of the ten-way valve is connected to the inlet of the first six-way valve and the inlet of the second six-way valve respectively, the outlet of the first six-way valve is connected to the TCD detector, and the outlet of the second six-way valve is connected to the first FID detector.

[0024] The TCD detector is used to detect H in the gas phase product. 2 , O 2 , CO 2 、N 2 , CH 4 and CO.

[0025] The first FID detector is used to detect small molecule aromatic hydrocarbons in the gas phase product.

[0026] Optionally, the second chromatograph comprises: a non-polar column, a solid-state thermal modulator, a polar column and a second FID detector connected in sequence.

[0027] The non-polar column is used to separate the liquid phase products according to the difference in boiling points of substances to obtain boiling point products.

[0028] A solid-state heat modulator is used to condense the boiling point product, re-gasify it and input it into the polar column in the form of periodic pulses.

[0029] The polarity column is used to further separate the boiling point products after vaporization according to the polarity difference of the substances to obtain polar products.

[0030] The second FID detector is used to determine the types of various aromatic hydrocarbons based on the boiling point products and the polar products.

[0031] Optionally, the data processing device is also used to display the performance indicator results, and to determine whether the performance indicator results are qualified or not by limiting the indicator values ​​and to issue an alarm if the performance indicator results exceed the standard.

[0032] Optionally, the data processing device is further used to determine the distribution of degradation products according to the performance index results, automatically determine the degradation cause of the organic heat carrier sample, and provide a disposal strategy; the degradation causes include: overtemperature, oxidation, pollution and H 2 The content is greater than the preset content.

[0033] In a second aspect, the present application provides an intelligent detection method for organic heat carriers for solar thermal power generation, which is implemented based on the intelligent detection system for organic heat carriers for solar thermal power generation described in any one of the above items, and the intelligent detection method for organic heat carriers for solar thermal power generation includes:

[0034] The organic heat carrier is sampled to obtain an organic heat carrier sample.

[0035] The organic heat carrier sample is subjected to gas-liquid separation, and the separated gas phase product and liquid phase product are sampled respectively.

[0036] The components of the gas phase product are detected to obtain the components of the gas phase product.

[0037] The components of the liquid phase product are detected to obtain the components of the liquid phase product.

[0038] Based on the components of the gas phase product and the components of the liquid phase product, the performance index results of the organic heat carrier sample are calculated; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of the low boiling point substances, the composition and content of the high boiling point substances, the deterioration rate, and the long-term data statistical trend line.

[0039] Optionally, the intelligent detection method for organic heat carriers for solar thermal power generation further includes: displaying the performance index results, and determining whether the performance index results are qualified or not by limiting index values ​​and providing an alarm prompt when the values ​​exceed the standard.

[0040] Optionally, the intelligent detection method for organic heat carriers for solar thermal power generation further includes: determining the distribution of degradation products according to the performance index results, automatically judging the degradation cause of the organic heat carrier sample, and providing a disposal strategy; the degradation causes include: overtemperature, oxidation, pollution and H 2 The content is greater than the preset content.

[0041] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0042] The present application provides an intelligent detection system and method for organic heat carriers for solar thermal power generation. The circulating operation of the organic heat carrier is realized by a simulation test device, and the organic heat carrier sample is collected; the organic heat carrier sample is subjected to gas-liquid separation by a gas-liquid separation and sampling device, and the separated gas phase product and liquid phase product are sampled respectively; the components of the gas phase product are detected by a first chromatograph to obtain the components of the gas phase product; the components of the liquid phase product are detected by a second chromatograph to obtain the components of the liquid phase product; finally, the performance index results of the organic heat carrier sample are calculated based on the components of the gas phase product and the components of the liquid phase product by a data processing device; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of the low-boiling substances, the composition and content of the high-boiling substances, the deterioration rate, and the long-period data statistical trend line. The present application can monitor the deterioration of organic heat carriers in real time through the coordinated use of a simulation test device, a gas-liquid separation and sampling device, a first chromatograph, a second chromatograph and a data processing device, and then provide detailed information and disposal strategies for product degradation based on performance index results, and guide adjustments to system operating conditions such as system operation and regeneration. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 This is a structural block diagram of an intelligent detection system for organic heat carriers for solar thermal power generation provided in one embodiment of the present application.

[0045] Figure 2 A schematic diagram of the structure of a first chromatograph provided in one embodiment of the present application.

[0046] Figure 3 A schematic diagram of the structure of a second chromatograph provided in one embodiment of the present application.

[0047] Figure 4 A schematic flow chart of an intelligent detection method for organic heat carriers in solar thermal power generation provided in one embodiment of the present application.

[0048] Reference numerals:

[0049] 1-simulation test device; 2-gas-liquid separation and sampling device; 3-first chromatograph; 4-second chromatograph; 5-data processing device; V1-ten-way valve; V2-first six-way valve; V3-second six-way valve. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] In an exemplary embodiment, Figure 1 As shown, an intelligent detection system for organic heat carriers for solar thermal power generation is provided, and the intelligent detection system for organic heat carriers for solar thermal power generation includes:

[0053] The simulation test device 1 is used to realize the circulation operation of the organic heat carrier and to collect the organic heat carrier sample.

[0054] The gas-liquid separation and sampling device 2 is connected to the simulation test device 1 and is used to perform gas-liquid separation on the organic heat carrier sample and to sample the separated gas phase product and liquid phase product respectively.

[0055] The first chromatograph 3 is connected to the gas-liquid separation and sampling device 2 and is used to detect the components of the gas phase product to obtain the components of the gas phase product.

[0056] The second chromatograph 4 is connected to the gas-liquid separation and sampling device 2 and is used to detect the components of the liquid phase product to obtain the components of the liquid phase product.

[0057] The data processing device 5 is connected to the first chromatograph 3 and the second chromatograph 4, and is used to calculate the performance index results of the organic heat carrier sample based on the components of the gas phase product and the components of the liquid phase product; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of the low boiling point substances, the composition and content of the high boiling point substances, the deterioration rate, and the long-term data statistical trend line.

[0058] Specifically, the simulation test device 1 can perform on-site operation simulation tests, realize the cyclic operation of the organic heat carrier at a maximum temperature of 400° C., provide an online detection environment, and realize sample collection through system pressure control.

[0059] As an optional embodiment, the gas-liquid separation and sampling device 2 comprises:

[0060] The online sample gas-liquid separation storage tank 21 is connected to the simulation test device 1 and is used to perform gas-liquid separation on the organic heat carrier sample to obtain a gas phase product and a liquid phase product.

[0061] The gas online sampling device 22 is connected to the online sample gas-liquid separation storage tank 21 and is used to sample the gas phase product.

[0062] The liquid online sampling device 23 is connected to the online sample gas-liquid separation storage tank 21 and is used to sample the liquid phase product.

[0063] As an optional implementation, the solar thermal power generation organic heat carrier intelligent detection system further includes:

[0064] The first pressure control device is connected to the simulation test device 1 and is used to collect the organic heat carrier sample.

[0065] A cooling circulation device is connected to the online sample gas-liquid separation storage tank 21 and is used to separate and cool the gas phase product and the liquid phase product.

[0066] The second pressure control device is connected to the gas-liquid separation and sampling device 2 and is used to discharge the gas phase product.

[0067] The first signal starting unit is respectively connected to the first chromatograph 3, the second chromatograph 4 and the second pressure control device, and is used to send a starting signal to the first chromatograph 3, the second chromatograph 4 and the second pressure control device when the temperature of the gas phase product and the liquid phase product drops below a preset temperature.

[0068] The second signal starting unit is connected to the gas online sampling device 22 and the liquid online sampling device 23 respectively, and is used to send sampling signals to the gas online sampling device 22 and the liquid online sampling device 23 when the first chromatograph 3 and the second chromatograph 4 are started.

[0069] Specifically, the online sample gas-liquid separation storage tank 21 can achieve gas-liquid separation of the online samples collected at regular intervals to obtain gas-phase products and liquid-phase products. The organic heat carrier running in the simulation test device 1 will change over time, affecting its performance and power generation efficiency. In order to monitor its changes in a timely manner, it is necessary to regularly collect the organic heat carrier in use in the device. The collected organic heat carrier has a temperature of nearly 400°C and is in a gas-liquid mixed state. The separation and cooling of the gas-phase products and liquid-phase products are achieved through the cooling circulation device connected to the outside of the online sample gas-liquid separation storage tank 21.

[0070] When the temperature drops below 200°C, a start signal is sent to the first chromatograph 3, the second chromatograph 4 and the second pressure control device through the first signal start unit. After the first chromatograph 3 and the second chromatograph 4 are started, a sampling signal is sent to the gas online sampling device 22 and the liquid online sampling device 23 through the second signal start unit. The process includes: replacement, dilution, injection, and cleaning of the injection system. The gas phase product is output from the top of the online sample gas-liquid separation storage tank 21 through the second pressure control device and enters the first chromatograph 3 through the gas online sampling device 22. The liquid phase product is output from the middle of the tank body of the online sample gas-liquid separation storage tank 21 and enters the second chromatograph 4 through the liquid online sampling device 23. A drainage outlet is provided at the bottom of the online sample gas-liquid separation storage tank 21 for replacing and discharging excess organic heat carrier.

[0071] As an optional implementation, Figure 2 As shown, the first chromatograph 3 includes: a ten-way valve V1, a first six-way valve V2, a second six-way valve V3, a TCD detector and a first FID detector.

[0072] The outlet of the ten-way valve V1 is connected to the inlet of the first six-way valve V2 and the inlet of the second six-way valve V3 respectively, the outlet of the first six-way valve V2 is connected to the TCD detector, and the outlet of the second six-way valve V3 is connected to the first FID detector.

[0073] The TCD detector is used to detect H in the gas phase product. 2 , O 2 , CO 2 、N 2 , CH 4 and CO.

[0074] The first FID detector is used to detect small molecule aromatic hydrocarbons in the gas phase product.

[0075] It should be noted that the gas phase composition is relatively simple and can be analyzed using 1D GC. 2 ,CO,O 2 , CO 2 , benzene, toluene, ethylbenzene, etc., were analyzed using a gas chromatograph equipped with two channels (channel 1: HayeSep Q and molecular sieve column for H 2 Detection of etc.; Channel 2: PLOTAl 2 O 3 Column, for hydrocarbon detection).

[0076] In this embodiment, the ten-way valve V1 is initially in a single-line state, and the event Relay1(1) is used to switch V1 to a double-line state, so that the gas phase product in the quantitative loop enters the analysis system. 2 ,CO,O2 , CO 2 After entering MC-1 (pretreatment column 1 (HayeSepQ)), use event Relay1(0) to backflush CO 2 Subsequent components (i.e. excluding water vapor and heavy components).

[0077] In channel 1, the first six-way valve V2 is initially in a single-line state. 2 , O 2 MC-2 flows out, while CO 2 Before entering MC-2 (analytical column 1 (molecular sieve column)), use event Relay2 (1) to switch V2 to the double-line state, H 2 , O 2 It is detected by TCD. Then CO 2 The voltage is detected by TCD through CC-2 (damping, which balances the pressure). Finally, event Relay2(0) is used to switch V2 to the single-line state, N 2 , CH 4 , CO is separated by MC-2 and detected by TCD.

[0078] In channel 2, the second six-way valve V3 is initially in a single-line state. Event Relay3(1) is used to switch V3 to a double-line state, so that the gas sample in the quantitative loop enters the analysis system. The sample passes through MC-3 (analytical column 2 (PLOTAl) 2 O 3 After separation on the column, small aromatic molecules such as benzene and toluene are detected by FID. After injection, the valve is restored to the single-line state using event Relay3(0).

[0079] As an optional implementation, Figure 3 As shown, the second chromatograph 4 comprises: a non-polar column, a solid-state thermal modulator, a polar column and a second FID detector connected in sequence.

[0080] The non-polar column is used to separate the liquid phase products according to the difference in boiling points of substances to obtain boiling point products.

[0081] A solid-state heat modulator is used to condense the boiling point product, re-gasify it and input it into the polar column in the form of periodic pulses.

[0082] The polarity column is used to further separate the boiling point products after vaporization according to the polarity difference of the substances to obtain polar products.

[0083] The second FID detector is used to determine the types of various aromatic hydrocarbons based on the boiling point products and the polar products.

[0084] It should be noted that the composition of the liquid phase is complex, including a mixture of biphenyl, biphenyl ether and small molecular benzene series generated by cracking reactions between the two, as well as multi-benzene ring polymers generated by polymerization reactions of small molecules produced by cracking and free radicals. Most of the groups are isomers, which are very difficult to separate and cause serious mutual interference in analysis.

[0085] In this embodiment, 2D GC×GC analysis technology is adopted. The liquid phase product first enters the first dimension non-polar column (DB1 column) through the split / splitless inlet (Split / Splitless, S / SL), and is separated according to the difference in boiling points of the substances. The generated distillate is condensed in a solid state modulator (SSM), and then re-vaporized and input into the second dimension polar column (60m HeavyWax column) in the form of periodic pulses, and further separated according to the difference in polarity of the substances. The above process enables the liquid phase products to be separated in an orthogonal manner in two dimensions of boiling point and polarity, greatly reducing the interference between similar components and realizing accurate analysis of product components.

[0086] As an optional implementation, the data processing device is also used to display the performance indicator results, and to determine whether the performance indicator results are qualified or not by limiting the indicator values ​​and to issue an alarm if the performance indicator results exceed the standard.

[0087] As an optional implementation, the data processing device is also used to determine the distribution of degradation products according to the performance index results, automatically determine the degradation cause of the organic heat carrier sample, and provide a disposal strategy; the degradation causes include: overtemperature, oxidation, pollution and H 2 The content is greater than the preset content.

[0088] Specifically, the detailed composition of the organic heat carrier sample and the corresponding chromatographic peak retention time and peak area are obtained through chromatographic analysis, and the data processing device 5 converts the above signals and outputs them as sample performance index results; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of low-boiling substances, the composition and content of high-boiling substances, the deterioration rate, and the long-term data statistical trend line. The data processing device 5 displays the above data results and can also make a judgment on whether the above performance index results of the sample are qualified or not and give an alarm prompt for exceeding the standard by limiting the index value. The distribution of deterioration products is given, and the deterioration cause of the organic heat carrier sample (overtemperature, oxidation, pollution, etc.) is automatically judged and a disposal strategy is given. For example: if the detailed composition results of the product reflect that there are many types and contents of polyphenyl ring polymers, it can be judged that the main cause of product degradation is the over-temperature operation of the system, and suggestions are given to check the operation of the temperature control system; if the product composition analysis results reflect the generation of organic acid oxides, it can be judged that the main cause of product degradation is oxidation, and suggestions are given to check the leakage of system contacts; if the product composition analysis results reflect the presence of water or other unconventional substances, it can be judged that the main cause of product degradation is pollution, and suggestions are given to check whether there are abnormalities in the operation of system oil replenishment, regeneration, etc.; if the product composition analysis results reflect H 2 If the content is high, it can be predicted that the product will deteriorate and a suggestion can be given to exhaust the gas as soon as possible to reduce the H 2 The content is reduced to a reasonable level.

[0089] This application can replace manual sampling and traditional 1000h heating thermal stability evaluation, can monitor the deterioration of organic heat carriers in real time, provide detailed information and disposal strategies for product degradation, and guide adjustments to system operation and regeneration and other system operating conditions.

[0090] In an exemplary embodiment, Figure 4 As shown, a method for intelligent detection of organic heat carriers for solar thermal power generation is provided. The method for intelligent detection of organic heat carriers for solar thermal power generation is implemented based on any of the above-mentioned intelligent detection systems for organic heat carriers for solar thermal power generation. The method for intelligent detection of organic heat carriers for solar thermal power generation comprises:

[0091] S1: Sampling the organic heat carrier to obtain an organic heat carrier sample.

[0092] S2: performing gas-liquid separation on the organic heat carrier sample, and sampling the separated gas phase product and liquid phase product respectively.

[0093] S3: Detecting the components of the gas phase product to obtain the components of the gas phase product.

[0094] S4: Detecting the components of the liquid phase product to obtain the components of the liquid phase product.

[0095] S5: Based on the components of the gas phase product and the components of the liquid phase product, the performance index results of the organic heat carrier sample are calculated; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of the low boiling point substances, the composition and content of the high boiling point substances, the deterioration rate, and the long-term data statistical trend line.

[0096] As an optional implementation, the intelligent detection method for organic heat carriers for solar thermal power generation further includes: displaying the performance index results, and determining whether the performance index results are qualified or not by limiting the index values ​​and providing an alarm prompt for exceeding the standard.

[0097] As an optional implementation, the solar thermal power generation organic heat carrier intelligent detection method further includes: determining the distribution of degradation products according to the performance index results, automatically judging the degradation cause of the organic heat carrier sample, and providing a disposal strategy; the degradation causes include: overtemperature, oxidation, pollution and H 2 The content is greater than the preset content.

[0098] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An intelligent detection system for organic heat carriers for solar thermal power generation, characterized in that: The solar thermal power generation organic heat carrier intelligent detection system comprises: The simulation test device is used to realize the circulation operation of the organic heat carrier and to collect samples of the organic heat carrier; A gas-liquid separation and sampling device, connected to the simulation test device, is used to perform gas-liquid separation on the organic heat carrier sample and to sample the separated gas phase product and liquid phase product respectively; A first chromatograph, connected to the gas-liquid separation and sampling device, for detecting the components of the gas-phase product to obtain the components of the gas-phase product; A second chromatograph, connected to the gas-liquid separation and sampling device, for detecting the components of the liquid phase product to obtain the components of the liquid phase product; A data processing device is connected to the first chromatograph and the second chromatograph, and is used to calculate the performance index results of the organic heat carrier sample based on the components of the gas phase product and the components of the liquid phase product; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of the low boiling point substances, the composition and content of the high boiling point substances, the deterioration rate, and the long-period data statistical trend line.

2. The intelligent detection system for organic heat carriers for solar thermal power generation according to claim 1 is characterized in that: The gas-liquid separation and sampling device comprises: An online sample gas-liquid separation storage tank is connected to the simulation test device and is used to perform gas-liquid separation on the organic heat carrier sample to obtain a gas phase product and a liquid phase product; A gas online sampling device, connected to the online sample gas-liquid separation storage tank, for sampling the gas phase product; The liquid online sampling device is connected to the online sample gas-liquid separation storage tank and is used for sampling the liquid phase product.

3. The intelligent detection system for organic heat carriers for solar thermal power generation according to claim 2 is characterized in that: The solar thermal power generation organic heat carrier intelligent detection system also includes: A first pressure control device, connected to the simulation test device, for sampling the organic heat carrier sample; A cooling circulation device, connected to the online sample gas-liquid separation storage tank, for achieving separation and cooling of the gas phase product and the liquid phase product; a second pressure control device, connected to the gas-liquid separation and sampling device, for discharging the gas phase product; a first signal start unit, connected to the first chromatograph, the second chromatograph and the second pressure control device, respectively, and configured to send a start signal to the first chromatograph, the second chromatograph and the second pressure control device when the temperature of the gas phase product and the liquid phase product drops below a preset temperature; The second signal starting unit is connected to the gas online sampling device and the liquid online sampling device respectively, and is used to send sampling signals to the gas online sampling device and the liquid online sampling device after the first chromatograph and the second chromatograph are started.

4. The intelligent detection system for organic heat carriers for solar thermal power generation according to claim 1 is characterized in that: The first chromatograph comprises: a ten-way valve, a first six-way valve, a second six-way valve, a TCD detector and a first FID detector; The outlet of the ten-way valve is connected to the inlet of the first six-way valve and the inlet of the second six-way valve respectively, the outlet of the first six-way valve is connected to the TCD detector, and the outlet of the second six-way valve is connected to the first FID detector; The TCD detector is used to detect H2, O2, CO2, N2, CH4 and CO in the gas phase product; The first FID detector is used to detect small molecule aromatic hydrocarbons in the gas phase product.

5. The intelligent detection system for organic heat carriers for solar thermal power generation according to claim 1 is characterized in that: The second chromatograph comprises: a non-polar column, a solid-state thermal modulator, a polar column and a second FID detector connected in sequence; A non-polar column, used to separate the liquid phase products according to the difference in boiling points of the substances to obtain boiling point products; a solid-state heat modulator for condensing the boiling point product, re-gasifying it and inputting it into the polar column in the form of periodic pulses; The polar column is used to further separate the boiling point products after vaporization according to the polarity difference of the substances to obtain polar products; The second FID detector is used to determine the types of various aromatic hydrocarbons based on the boiling point products and the polar products.

6. The intelligent detection system for organic heat carriers for solar thermal power generation according to claim 1 is characterized in that: The data processing device is also used to display the performance index results, and to determine whether the performance index results are qualified or not and to issue an alarm prompt if the performance index results exceed the standard by limiting the index values.

7. The intelligent detection system for organic heat carriers for solar thermal power generation according to claim 6 is characterized in that: The data processing device is also used to determine the distribution of degradation products based on the performance index results, automatically judge the degradation cause of the organic heat carrier sample, and provide a disposal strategy; the degradation causes include: overtemperature, oxidation, pollution, and H2 content greater than a preset content.

8. An intelligent detection method for organic heat carriers for solar thermal power generation, which is implemented based on the intelligent detection system for organic heat carriers for solar thermal power generation according to any one of claims 1 to 7, and is characterized in that: The intelligent detection method for organic heat carriers for solar thermal power generation comprises: Sampling the organic heat carrier to obtain an organic heat carrier sample; Performing gas-liquid separation on the organic heat carrier sample, and sampling the separated gas phase product and liquid phase product respectively; Detecting the components of the gas-phase product to obtain the components of the gas-phase product; Detecting the components of the liquid phase product to obtain the components of the liquid phase product; Based on the components of the gas phase product and the components of the liquid phase product, the performance index results of the organic heat carrier sample are calculated; the performance index results include: the composition and content of the gas phase decomposition products of the organic heat carrier in use, the composition and content of the low boiling point substances, the composition and content of the high boiling point substances, the deterioration rate, and the long-term data statistical trend line.

9. The intelligent detection method for organic heat carriers for solar thermal power generation according to claim 8, characterized in that: The intelligent detection method for organic heat carriers for solar thermal power generation also includes: displaying the performance index results, and determining whether the performance index results are qualified or not and providing an alarm prompt for exceeding the standard by limiting the index values.

10. The intelligent detection method for organic heat carriers for solar thermal power generation according to claim 9, characterized in that: The intelligent detection method for organic heat carriers for solar thermal power generation also includes: determining the distribution of degradation products based on the performance indicator results, automatically judging the degradation causes of the organic heat carrier samples, and providing a disposal strategy; the degradation causes include: overtemperature, oxidation, pollution, and H2 content greater than a preset content.

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