CN110542574A - Apparatus and test method for verifying self-blocking behavior of sodium and carbon dioxide reactants - Google Patents
Apparatus and test method for verifying self-blocking behavior of sodium and carbon dioxide reactants Download PDFInfo
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- CN110542574A CN110542574A CN201910878491.2A CN201910878491A CN110542574A CN 110542574 A CN110542574 A CN 110542574A CN 201910878491 A CN201910878491 A CN 201910878491A CN 110542574 A CN110542574 A CN 110542574A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 96
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 59
- 239000011734 sodium Substances 0.000 title claims abstract description 59
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 48
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 48
- 229910001948 sodium oxide Inorganic materials 0.000 title claims abstract description 30
- 239000000376 reactant Substances 0.000 title claims abstract description 13
- 238000010998 test method Methods 0.000 title claims description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 238000012360 testing method Methods 0.000 claims description 41
- 229910052708 sodium Inorganic materials 0.000 claims description 29
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- 239000007795 chemical reaction product Substances 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 15
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 6
- NWYRNCMKWHKPAI-UHFFFAOYSA-N C(=O)=O.[Na] Chemical compound C(=O)=O.[Na] NWYRNCMKWHKPAI-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- General Health & Medical Sciences (AREA)
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
技术领域technical field
本发明涉及钠冷快堆中换热器技术领域，具体涉及一种用于验证钠与二氧化碳反应物自堵行为的装置及试验方法。The invention relates to the technical field of heat exchangers in sodium-cooled fast reactors, in particular to a device and a test method for verifying the self-blocking behavior of sodium and carbon dioxide reactants.
背景技术Background technique
在基于超临界二氧化碳布雷循环系统的钠冷快堆中，印刷电路板式换热器是主要热交换器类型。印刷电路板式换热器的超临界二氧化碳侧运行压力约20MPa、运行温度约530℃，钠侧的运行压力约0.1MPa、运行温度为550℃因而当印刷电路板式换热器运行时，如果发生微型泄漏，高压的二氧化碳势必会向钠中迁移，进而与钠进行反应。钠与二氧化碳在高温下(460℃以上)会产生剧烈的反应，但其反应物则是不溶于钠的碳酸钠、碳等颗粒物，因而存在钠-超临界二氧化碳反应产物在印刷电路板式换热器中产生“自堵”行为的可能性。In the sodium-cooled fast reactor based on the supercritical carbon dioxide Bray cycle system, the printed circuit board heat exchanger is the main type of heat exchanger. The operating pressure of the supercritical carbon dioxide side of the printed circuit board heat exchanger is about 20MPa, the operating temperature is about 530°C, the operating pressure of the sodium side is about 0.1MPa, and the operating temperature is 550°C. Therefore, when the printed circuit board heat exchanger is running, if micro Leakage, high-pressure carbon dioxide is bound to migrate to sodium, and then react with sodium. Sodium and carbon dioxide will react violently at high temperatures (above 460°C), but the reactants are sodium carbonate, carbon and other particles insoluble in sodium, so there are sodium-supercritical carbon dioxide reaction products in the printed circuit board heat exchanger The possibility of "self-blocking" behavior in the
因此验证钠-二氧化碳反应产物在印刷电路板式换热器中是否产生“自堵”，对印刷电路板式换热器的设计、采用超临界二氧化碳布雷顿循环系统的钠冷快堆的设计都有重要意义。Therefore, to verify whether the sodium-carbon dioxide reaction product produces "self-blocking" in the printed circuit board heat exchanger is important for the design of the printed circuit board heat exchanger and the design of the sodium-cooled fast reactor using the supercritical carbon dioxide Brayton cycle system. significance.
发明内容Contents of the invention
针对现有技术中存在的缺陷，本发明的目的在于提供一种用于验证钠与二氧化碳反应物自堵行为的装置及试验方法，该装置其能够对钠-二氧化碳反应产物在印刷电路板式换热器中是否产生“自堵”进行试验，为印刷电路板式换热器的设计(如钠侧管径的选择等)提供依据。In view of the defects in the prior art, the object of the present invention is to provide a device and test method for verifying the self-blocking behavior of sodium and carbon dioxide reactants, which can conduct heat exchange of sodium-carbon dioxide reaction products on printed circuit boards. Test whether there is "self-blocking" in the heat exchanger, and provide a basis for the design of the printed circuit board heat exchanger (such as the selection of the sodium side pipe diameter, etc.).
为实现上述目的，本发明采用的技术方案如下：To achieve the above object, the technical scheme adopted in the present invention is as follows:
一种用于验证钠与二氧化碳反应物自堵行为的装置，所述装置包括有外筒体、上法兰、进气接管、出气接管、防溢气腔、防溢裙边、反应套管，其中所述上法兰密封固定安装在所述外筒体顶端面上，所述进气接管和出气接管分别与所述外筒体内腔连通，所述反应套管设置在所述外筒体内腔中，反应套管的内管通过所述防溢气腔与所述进气接管底端连接，所述防溢裙边设置在所述反应套管中的外套管顶端四周边缘上。A device for verifying the self-blocking behavior of sodium and carbon dioxide reactants, the device includes an outer cylinder, an upper flange, an air inlet joint, an air outlet joint, an anti-overflow cavity, an anti-overflow skirt, and a reaction sleeve, Wherein the upper flange is sealed and fixedly installed on the top surface of the outer cylinder body, the air inlet connecting pipe and the gas outlet connecting pipe are connected with the inner cavity of the outer cylinder respectively, and the reaction sleeve is arranged in the inner cavity of the outer cylinder wherein, the inner tube of the reaction sleeve is connected to the bottom end of the air inlet connection through the anti-overflow cavity, and the anti-overflow skirt is arranged on the periphery of the top of the outer sleeve in the reaction sleeve.
进一步，所述装置还包括有支撑杆，其中所述防溢裙边通过所述支撑杆固定安装在所述反应套管中的外套管顶端四周边缘上。Further, the device further includes a support rod, wherein the overflow-proof skirt is fixedly installed on the periphery of the top end of the outer sleeve in the reaction sleeve through the support rod.
进一步，所述装置还包括有测温热电偶，其中所述测温热电偶设置在所述外筒体的热偶阱中。Further, the device further includes a temperature measuring thermocouple, wherein the temperature measuring thermocouple is arranged in the thermocouple well of the outer cylinder.
进一步，所述测温热电偶为设置在所述反应套管底端处。Further, the temperature measuring thermocouple is arranged at the bottom end of the reaction sleeve.
进一步，所述支撑杆其一端固定连接在所述防溢气腔的底端外端面上，其一端与所述防溢裙边的上端内端面相连。Further, one end of the support rod is fixedly connected to the bottom outer surface of the anti-overflow chamber, and one end is connected to the upper inner surface of the anti-overflow skirt.
进一步，所述反应套管其内管直径和其内外套管之间的环隙宽度相同。Further, the diameter of the inner tube of the reaction sleeve is the same as the width of the annulus between the inner and outer sleeves.
同时，本发明还提供一种基于上述用于验证钠与二氧化碳反应产物自动行为的装置的试验方法，该试验方法包括有以下步骤：Simultaneously, the present invention also provides a kind of test method based on the above-mentioned device for verifying the automatic behavior of sodium and carbon dioxide reaction product, and this test method comprises the following steps:
1)、将上述试验装置处于惰性气体环境下，将金属钠滴入到上述试验装置中反应套管的环隙中；2)、将试验装置从惰性气体环境中移出，在常温下，将试验装置内部抽成真空状态；3)、将试验装置加热到150℃，以使得钠流流入反应套管的内管和环隙中；4)、将试验装置冷却至室温，使得钠处于固体状态；5)、从进口管和出气管一起向试验装置内充入连通的二氧化碳气体，并将试验装置加热至550℃，使得钠与二氧化碳充分反应；6)、反应后，停止加热，将试验装置冷却至室温，并将试验装置移送至惰性气体环境中，观看钠与二氧化碳的反应情况；7)、将试验装置移出，通过进气管向试验装置内部充入高压氩气，通过出气管与外部大气相连；8)、将试验装置加热至550℃，并向其内逐渐加入高压氩气；9)、在试验装置出气管处使用氩气检漏仪检测是否有氩气泄漏。1), put the above-mentioned test device in an inert gas environment, drip metal sodium into the annulus of the reaction sleeve in the above-mentioned test device; 2), remove the test device from the inert gas environment, and put the test device at normal temperature. The inside of the device is evacuated into a vacuum state; 3), the test device is heated to 150 ° C, so that the sodium flow flows into the inner tube and the annulus of the reaction sleeve; 4), the test device is cooled to room temperature, so that the sodium is in a solid state; 5) Fill the test device with connected carbon dioxide gas from the inlet pipe and the outlet pipe together, and heat the test device to 550°C to make the sodium and carbon dioxide fully react; 6) After the reaction, stop heating and cool the test device to room temperature, and move the test device to an inert gas environment to observe the reaction between sodium and carbon dioxide; 7), remove the test device, fill the test device with high-pressure argon through the inlet pipe, and connect it to the outside atmosphere through the gas outlet pipe ; 8), heat the test device to 550°C, and gradually add high-pressure argon into it; 9), use an argon leak detector at the gas outlet pipe of the test device to detect whether there is argon leakage.
进一步，在上述步骤2)和3)中，采用真空、加热的方式，将钠充入反应套管的内管和环隙中。Further, in the above steps 2) and 3), sodium is filled into the inner tube and the annulus of the reaction sleeve by means of vacuum and heating.
进一步，在上述步骤5)中，同时从进口管和出气管一起向试验装置充入相同压力的二氧化碳。Further, in the above step 5), the test device is filled with carbon dioxide at the same pressure from the inlet pipe and the outlet pipe simultaneously.
进一步，在上述步骤5)中，钠与二氧化碳反应时，进口管和出气管一直处于连通的状态。Further, in the above step 5), when sodium reacts with carbon dioxide, the inlet pipe and the outlet pipe are always in a connected state.
与现有技术相比，本方案具有的有益技术效果为：可以利用本发明装置对钠-二氧化碳反应产物在印刷电路板式换热器中是否产生“自堵”进行试验，试验得到的结果将用于印刷电路板式换热器的设计中，为印刷电路板式换热器的钠侧管径的选择提供依据，从而降低了印刷电路板式换热器的研发成本，同时提升了印刷电路板式换热器的应用价值。Compared with the prior art, the beneficial technical effect of this scheme is that the device of the present invention can be used to test whether the sodium-carbon dioxide reaction product produces "self-blocking" in the printed circuit board heat exchanger, and the results obtained from the test will be used In the design of printed circuit board heat exchangers, it provides a basis for the selection of the diameter of the sodium side of printed circuit board heat exchangers, thereby reducing the development cost of printed circuit board heat exchangers and improving the efficiency of printed circuit board heat exchangers. application value.
附图说明Description of drawings
图1为本发明中用于验证试验钠与二氧化碳反应产物自堵行为的装置原理结构示意图。Figure 1 is a schematic diagram of the principle structure of the device used to verify the self-blocking behavior of the reaction product of sodium and carbon dioxide in the present invention.
图中：In the picture:
1-上法兰，2-进气接管，3-出气接管，4-防溢气腔，5-支撑杆，6-防溢裙边，7-反应套管，8-外筒体，9-测温热电偶。1-upper flange, 2-intake connection, 3-outlet connection, 4-anti-overflow cavity, 5-support rod, 6-overflow prevention skirt, 7-reaction sleeve, 8-outer cylinder, 9- Temperature measuring thermocouple.
具体实施方式Detailed ways
下面结合说明书附图与具体实施方式对本发明做进一步的详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
本方案是针对钠与二氧化碳在高温下(460℃以上)会产生剧烈的反应，但其反应物则是不溶于钠的碳酸钠、碳等颗粒物，存在钠-超临界二氧化碳反应产物在印刷电路板式换热器中产生“自堵”行为的可能性，进而提出的一种用于验证试验钠与二氧化碳反应产物自堵行为的装置，该装置其能够对钠-二氧化碳反应产物在印刷电路板式换热器中是否产生“自堵”进行试验，为印刷电路板式换热器的钠侧管径的选择提供依据。This scheme is aimed at the violent reaction between sodium and carbon dioxide at high temperature (above 460°C), but the reactants are sodium carbonate, carbon and other particles insoluble in sodium, and there are sodium-supercritical carbon dioxide reaction products in the printed circuit board type The possibility of "self-blocking" behavior in the heat exchanger, and then a device for verifying the self-blocking behavior of the reaction product of sodium and carbon dioxide is proposed. Test whether there is "self-blocking" in the heat exchanger, and provide a basis for the selection of the diameter of the sodium side of the printed circuit board heat exchanger.
参见附图1所示，本实施例中的用于验证试验钠与二氧化碳反应产物自堵行为的装置，其包括有采用不锈钢材质的外筒体8、支撑杆5、上法兰1、进气接管2、出气接管3、防溢气腔4、防溢裙边6、反应套管7以及测温热电偶9，其中上法兰1密封固定安装在外筒体8顶端面上，进气接管2和出气接管3分别竖直设置在外筒体8内腔中，反应套管7竖直设置在外筒体8内腔中并通过防溢气腔4连接在进气接管2底端上，防溢裙边6设置在反应套管7中的外套管顶端四周边缘上，测温热电偶9设置在外筒体8内腔中，进气接管2通过防溢气腔4与反应套管7内管相连通，防溢裙边6通过支撑杆5固定安装在反应套管7中的外套管顶端四周边缘上，即支撑杆5其上端固定连接在防溢气腔4的底端外端面上，其底端与防溢裙边6的上端内端面相连。外筒体8其用于保护钠在转移和反应过程中不受空气的污染，上法兰1用于对外筒体8的上端面进行密封；进气接管2用于向反应套管7提供惰性气体和与钠反应的二氧化碳，在钠与二氧化碳反应之后，其还可以用于向外筒体8内腔中提供高压气体以测试反应产物的耐压能力；出气接管3用于实验过程的抽真空、进排气等功能；防溢气腔4用于防止钠进入进气接管2；支撑杆5用于支持防溢裙边6并保证反应套管7的环隙宽度；防溢裙边6用于防止钠流入到外筒体8内腔中；反应套管7用于钠和二氧化碳反应提供反应区域；测温热电偶9用于测量反应套管7的温度。在此需要说明的是，本实施例中的防溢气腔和进气管将其形成较细的管状结构，在试验开始后，反应产物在细管和环隙中沉积，从进气管中输入的高压气体(10MPa以上压力)推动反应产物，在推动过程中，由于外筒体内腔体积较大，并且出气管与外部大气相连通，因此在实际中外筒体所承受的压力较小，因此外筒体的设计抗压值可以相对较小(0.1MPa就可以了)，因而整个装置可以极大地减少试验容器的质量。Referring to the accompanying drawing 1, the device for verifying the self-blocking behavior of the reaction product of sodium and carbon dioxide in this embodiment includes an outer cylinder 8 made of stainless steel, a support rod 5, an upper flange 1, an air inlet Connecting pipe 2, air outlet connecting pipe 3, anti-overflow chamber 4, anti-overflow skirt 6, reaction sleeve 7 and temperature measuring thermocouple 9, wherein the upper flange 1 is sealed and fixed on the top surface of the outer cylinder 8, and the air inlet connecting pipe 2 and the outlet connecting pipe 3 are respectively vertically arranged in the inner cavity of the outer cylinder 8, and the reaction sleeve 7 is vertically arranged in the inner cavity of the outer cylinder 8 and connected to the bottom end of the inlet connecting pipe 2 through the anti-overflow cavity 4, and the anti-overflow skirt The side 6 is arranged on the edge around the top of the outer casing in the reaction casing 7, the temperature measuring thermocouple 9 is arranged in the inner cavity of the outer cylinder body 8, and the air intake connecting pipe 2 communicates with the inner tube of the reaction casing 7 through the anti-overflow cavity 4 , the anti-overflow skirt 6 is fixedly installed on the edge around the top of the outer casing in the reaction casing 7 through the support rod 5, that is, the upper end of the support rod 5 is fixedly connected to the bottom outer end surface of the anti-overflow chamber 4, and the bottom end It is connected with the upper inner end face of the overflow prevention skirt 6. The outer cylinder 8 is used to protect the sodium from air pollution during the transfer and reaction process, the upper flange 1 is used to seal the upper end surface of the outer cylinder 8; the gas inlet connection 2 is used to provide inertness to the reaction sleeve 7 Gas and carbon dioxide reacted with sodium, after the reaction of sodium and carbon dioxide, it can also be used to provide high-pressure gas to the inner cavity of the outer cylinder 8 to test the pressure resistance of the reaction product; the gas outlet connection 3 is used for vacuuming the experimental process , intake and exhaust functions; the anti-overflow cavity 4 is used to prevent sodium from entering the intake pipe 2; the support rod 5 is used to support the anti-overflow skirt 6 and ensure the annular gap width of the reaction sleeve 7; the anti-overflow skirt 6 is used To prevent sodium from flowing into the inner cavity of the outer cylinder 8; the reaction sleeve 7 is used to provide a reaction area for the reaction of sodium and carbon dioxide; the temperature measuring thermocouple 9 is used to measure the temperature of the reaction sleeve 7. It should be noted here that the anti-overflow cavity and the air intake pipe in this embodiment form it into a thinner tubular structure. After the test starts, the reaction product is deposited in the thin pipe and the annulus, and the input from the air intake pipe High-pressure gas (above 10MPa pressure) pushes the reaction product. During the pushing process, due to the large volume of the inner cavity of the outer cylinder, and the outlet pipe is connected to the external atmosphere, the pressure on the outer cylinder is relatively small in practice, so the outer cylinder The design compression value of the body can be relatively small (0.1MPa is enough), so the whole device can greatly reduce the quality of the test container.
进行试验时，首先将本方案中的上述装置的进气接管2和出气接管3都连接上阀门，然后放置到惰性气体手套箱内；在惰性气体手套箱中使用滴管将10g金属钠沿着防溢裙边6尽量充入反应套管7的环隙中，然后将装置组装后移出手套箱，并连接到可以抽真空、充气和加热的实验台架上；在常温下，从进气接管2和出气接管3处将装置内外都抽成真空状态(10Mpa以下)；此后将装置加热到150℃，以使钠流入反应套管7的内管和环隙中(内外钠压力处于平衡状态)；将装置冷却至室温，使钠处于固体状态；从进气接管2和出气接管3处向装置内冲入0.5Mpa的二氧化碳气体，为了保证二氧化碳与钠反应时，液态钠不会因为其两侧存在压力差而被压出，因此从进口管和出气管一起向该装置中充入相同压力的二氧化碳，并且在二氧化碳与钠的反应过程中，进口管和出气管一直处于连通的状态；再次加热装置至550℃，使钠与二氧化碳充分反应10min；反应时间到达后，停止加热，冷却至室温，将装置冷却至室温并移动到手套箱中，在惰性气体手套箱中查看反应情况，确认钠与二氧化碳的反应情况；重新将装置装回，在进气接管2处连接高压氩气，同时将出气接管3处连接大气；将装置加热到550℃，然后向缓冲罐中加入氩气并逐步提高压力(从0.1Mpa开始)。每次升高压力完成后，在出气接管3处使用氩气检漏仪监测是否有氩气泄出，若有泄漏，说明钠与二氧化碳反应装置不能承受该压力，即在该压力下不能维持“自堵”。When carrying out the test, at first connect the inlet connection pipe 2 and the gas outlet connection pipe 3 of the above-mentioned device in this scheme to the valve, and then place them in an inert gas glove box; use a dropper to drop 10g of sodium metal along Fill the anti-overflow skirt 6 into the annulus of the reaction sleeve 7 as much as possible, then move the device out of the glove box after assembly, and connect it to the test bench that can be vacuumed, inflated and heated; 2 and the gas outlet connecting pipe 3, the inside and outside of the device are evacuated into a vacuum state (below 10Mpa); after that, the device is heated to 150°C, so that sodium flows into the inner tube and annular gap of the reaction sleeve 7 (the internal and external sodium pressure is in a balanced state) ; Cool the device to room temperature, so that the sodium is in a solid state; inject 0.5Mpa of carbon dioxide gas into the device from the inlet connection 2 and the outlet connection 3, in order to ensure that when the carbon dioxide reacts with sodium, the liquid sodium will not be caused by its two sides There is a pressure difference and it is pressed out, so the device is filled with carbon dioxide at the same pressure from the inlet pipe and the outlet pipe together, and during the reaction process of carbon dioxide and sodium, the inlet pipe and the outlet pipe are always in a state of communication; reheat Heat the device to 550°C to fully react sodium and carbon dioxide for 10 minutes; after the reaction time is up, stop heating, cool to room temperature, cool the device to room temperature and move it to a glove box, check the reaction status in an inert gas glove box, and confirm the sodium and carbon dioxide Reaction of carbon dioxide; reinstall the device, connect high-pressure argon to the inlet connection 2, and connect the outlet connection 3 to the atmosphere; heat the device to 550°C, then add argon to the buffer tank and gradually increase the pressure (starting from 0.1Mpa). After each pressure increase is completed, use an argon leak detector at the gas outlet connection 3 to monitor whether there is any argon leakage. If there is any leakage, it means that the sodium and carbon dioxide reaction device cannot withstand the pressure, that is, it cannot be maintained under this pressure. Self-blocking".
综上所述，通过利用本发明装置对钠-二氧化碳反应产物在印刷电路板式换热器中是否产生“自堵”进行试验，试验得到的结果将用于印刷电路板式换热器的设计中，为印刷电路板式换热器的钠侧管径的选择提供依据，从而降低了印刷电路板式换热器的研发成本，同时提升了印刷电路板式换热器的应用价值。In summary, by using the device of the present invention to test whether the sodium-carbon dioxide reaction product produces "self-blocking" in the printed circuit board heat exchanger, the results obtained from the test will be used in the design of the printed circuit board heat exchanger. It provides a basis for the selection of the sodium side pipe diameter of the printed circuit board heat exchanger, thereby reducing the research and development cost of the printed circuit board heat exchanger, and at the same time improving the application value of the printed circuit board heat exchanger.
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其同等技术的范围之内，则本发明也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies, the present invention also intends to include these modifications and variations.
Claims (10)
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