CN209263392U - A multi-tank molten salt energy storage system - Google Patents
A multi-tank molten salt energy storage system Download PDFInfo
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- CN209263392U CN209263392U CN201821861411.XU CN201821861411U CN209263392U CN 209263392 U CN209263392 U CN 209263392U CN 201821861411 U CN201821861411 U CN 201821861411U CN 209263392 U CN209263392 U CN 209263392U
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- 150000003839 salts Chemical class 0.000 title claims abstract description 263
- 238000004146 energy storage Methods 0.000 title claims abstract description 20
- 239000006096 absorbing agent Substances 0.000 claims abstract description 15
- 238000005485 electric heating Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011232 storage material Substances 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
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- 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
- Y02E10/44—Heat exchange systems
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Abstract
本实用新型公开了一种多罐式熔盐储能系统，包括低温熔盐罐、高温熔盐罐、储盐罐、换热器、高温熔盐泵、低温熔盐泵、高温熔盐阀、低温熔盐阀、吸热器；所述的储盐罐数量不少于2个，并采用并联排列方式。本实用新型的有益效果是：通过并联排列多个储盐罐，减小了单个储盐罐的体积，降低了储盐罐加工制造难度和投资成本；提高了熔盐罐利用率，任何一个单一储盐罐发生故障不影响系统正常运行，同时避免在熔盐罐底部开孔，降低了熔盐泄露风险，增加了系统运行的安全可靠性，从而可以实现系统连续稳定地储能与供暖供汽。
The utility model discloses a multi-tank molten salt energy storage system, which comprises a low-temperature molten salt tank, a high-temperature molten salt tank, a salt storage tank, a heat exchanger, a high-temperature molten salt pump, a low-temperature molten salt pump, a high-temperature molten salt valve, Low-temperature molten salt valve, heat absorber; the number of said salt storage tanks is not less than 2, and they are arranged in parallel. The beneficial effects of the utility model are: by arranging a plurality of salt storage tanks in parallel, the volume of a single salt storage tank is reduced, the difficulty of processing and manufacturing the salt storage tank and the investment cost are reduced; the utilization rate of the molten salt tank is improved, and any single salt storage tank The failure of the salt storage tank does not affect the normal operation of the system. At the same time, opening holes at the bottom of the molten salt tank is avoided, which reduces the risk of molten salt leakage and increases the safety and reliability of the system operation, so that the system can achieve continuous and stable energy storage and heating and steam supply. .
Description
技术领域technical field
本实用新型涉及熔盐储能领域，尤其涉及一种多罐式熔盐储能换热系统。The utility model relates to the field of molten salt energy storage, in particular to a multi-tank molten salt energy storage heat exchange system.
背景技术Background technique
当前我国太阳能光伏发电、风能等新能源存在间歇性和波动性的问题，熔盐作为储能材料具有储能密度高、无毒无害、廉价易得、对环境友好、安全等优点能够很好的解决上述问题。利用熔盐蓄热技术，将低谷电或弃风弃光的“垃圾电”对熔盐进行加热从而为建筑物供热供暖或为工业提供蒸汽，不仅可以大幅削减电网峰谷差，增强电网的输电能力，而且可以提高可再生能源的利用效率，缓解采暖季的雾霾问题。At present, new energy sources such as solar photovoltaic power generation and wind energy in my country have intermittent and volatility problems. As an energy storage material, molten salt has the advantages of high energy storage density, non-toxic and harmless, cheap and easy to obtain, environmentally friendly, and safe. to solve the above problems. Using molten salt heat storage technology, the "garbage electricity" with low-peak electricity or abandoned wind and light can be used to heat molten salt to heat buildings or provide steam for industries, which can not only greatly reduce the peak-valley difference of the power grid, but also enhance the power grid It can improve the utilization efficiency of renewable energy and alleviate the smog problem in the heating season.
目前熔盐储能系统主要为双罐系统，包括一个冷盐罐和一个热盐罐。冷盐罐中低温熔盐被泵输送到加热器升温后进入热盐罐储存再被输送到换热设备，随着储能需求的增加，熔盐罐体积增大，加工制造难度增加，同时设备危险性增大，容易造成熔盐外泄，不利于系统的安全稳定运行，同时任何一个储盐罐发生故障，系统需要全部停止运行，对企业影响和损失较大。At present, the molten salt energy storage system is mainly a two-tank system, including a cold salt tank and a hot salt tank. The low-temperature molten salt in the cold salt tank is pumped to the heater to heat up, then enters the hot salt tank for storage, and then is transported to the heat exchange equipment. With the increase of energy storage demand, the volume of the molten salt tank increases, and the difficulty of processing and manufacturing increases. At the same time, the equipment The increased risk will easily cause molten salt leakage, which is not conducive to the safe and stable operation of the system. At the same time, if any salt storage tank fails, the system needs to stop running, which will have a great impact and loss on the enterprise.
实用新型内容Utility model content
本实用新型提供了一种解决上述背景技术中的问题或者部分地解决上述背景技术中的问题的多罐式熔盐储能系统。The utility model provides a multi-tank molten salt energy storage system that solves the problems in the background technology above or partially solves the problems in the background technology above.
为实现上述目的，本实用新型的技术方案为：In order to achieve the above object, the technical solution of the utility model is:
一种多罐式熔盐储能系统，该系统包括高温熔盐罐、低温熔盐罐、储盐罐、熔盐管道、高温熔盐泵、低温熔盐泵、低温熔盐阀、高温熔盐阀、吸热器和换热器。A multi-tank molten salt energy storage system, the system includes a high-temperature molten salt tank, a low-temperature molten salt tank, a salt storage tank, a molten salt pipeline, a high-temperature molten salt pump, a low-temperature molten salt pump, a low-temperature molten salt valve, and a high-temperature molten salt valves, heat sinks and heat exchangers.
所述高温熔盐罐、低温熔盐罐和储盐罐的形状为立体筒状结构或圆筒形卧式结构。The high-temperature molten salt tank, the low-temperature molten salt tank and the salt storage tank are in the shape of a three-dimensional cylindrical structure or a cylindrical horizontal structure.
所述储盐罐为并联排列方式，储盐罐的数量不少于2个。The salt storage tanks are arranged in parallel, and the number of salt storage tanks is not less than two.
所述低温熔盐泵、高温熔盐泵、低温熔盐阀、高温熔盐阀安装位置均在储盐罐、高温熔盐罐、低温熔盐罐的上方。The low-temperature molten salt pump, high-temperature molten salt pump, low-temperature molten salt valve, and high-temperature molten salt valve are installed above the salt storage tank, high-temperature molten salt tank, and low-temperature molten salt tank.
所述吸热器为塔式光热系统的中央吸热器，槽式光热系统的集热器，线性菲涅尔光热系统的集热器或者电加热的装置结构。The heat absorber is a central heat absorber of a tower photothermal system, a heat collector of a trough photothermal system, a heat collector of a linear Fresnel photothermal system or an electric heating device structure.
换热器中的吸热介质是水或者导热油。The heat-absorbing medium in the heat exchanger is water or heat transfer oil.
与现有技术相比较，本实用新型采用多罐式熔盐储能系统，储盐罐采用并联排列方式，减小单个熔盐罐体积，提高了熔盐罐利用率，降低加工制造难度，同时避免在熔盐罐底部开孔，降低了熔盐泄露风险，任何一个单一储盐罐发生故障，系统均可以正常稳定运行，增加了整个系统的安全可靠性。Compared with the prior art, the utility model adopts a multi-tank molten salt energy storage system, and the salt storage tanks are arranged in parallel, which reduces the volume of a single molten salt tank, improves the utilization rate of the molten salt tank, and reduces the difficulty of processing and manufacturing. Avoid opening holes at the bottom of the molten salt tank, which reduces the risk of molten salt leakage. If any single salt storage tank fails, the system can operate normally and stably, increasing the safety and reliability of the entire system.
附图说明Description of drawings
为了更清楚地说明本实用新型或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the utility model or the technical solution in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the utility model, those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本实用新型一种多罐式熔盐储能系统结构图。Figure 1 is a structural diagram of a multi-tank molten salt energy storage system of the present invention.
其中，1-低温熔盐罐，2-低温熔盐泵，3-吸热器，4-高温熔盐罐，5-第一低温熔盐阀，6- 第一储盐罐，7-第一高温熔盐泵，8-第二低温熔盐阀，9-第一高温熔盐阀，10-第一低温熔盐泵，11-第二储盐罐，12-第二高温熔盐泵，13-第三低温熔盐阀，14-第二高温熔盐阀，15-第二低温熔盐泵，16-换热器，17-第三高温熔盐泵。Among them, 1-low temperature molten salt tank, 2-low temperature molten salt pump, 3-heat absorber, 4-high temperature molten salt tank, 5-first low temperature molten salt valve, 6-first salt storage tank, 7-first High-temperature molten salt pump, 8-second low-temperature molten salt valve, 9-first high-temperature molten salt valve, 10-first low-temperature molten salt pump, 11-second salt storage tank, 12-second high-temperature molten salt pump, 13 - the third low temperature molten salt valve, 14 - the second high temperature molten salt valve, 15 - the second low temperature molten salt pump, 16 - the heat exchanger, 17 - the third high temperature molten salt pump.
具体实施方式Detailed ways
为使本实用新型实施例的目的、技术方案和优点更加清楚，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚地描述，显热，所描述的实施例是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention, sensible heat, described The embodiment is a part of the embodiments of the present utility model, but not all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
实施例1Example 1
图1为本实用新型实施例提供的一种多罐式熔盐储能系统的结构示意图，如图1所示，包括低温熔盐罐1，低温熔盐泵2，吸热器3，高温熔盐罐4，第一低温熔盐阀5，第一储盐罐6，第一高温熔盐泵7，第二低温熔盐阀8，第一高温熔盐阀9，第一低温熔盐泵10，第二储盐罐11，第二高温熔盐泵12，第三低温熔盐阀13，第二高温熔盐阀14，第二低温熔盐泵 15，换热器16和第三高温熔盐泵17。Fig. 1 is a schematic structural diagram of a multi-tank molten salt energy storage system provided by an embodiment of the present invention, as shown in Fig. 1, including a low-temperature molten salt tank 1, a low-temperature molten salt pump 2, a heat absorber 3, a Salt tank 4, first low temperature molten salt valve 5, first salt storage tank 6, first high temperature molten salt pump 7, second low temperature molten salt valve 8, first high temperature molten salt valve 9, first low temperature molten salt pump 10 , the second salt storage tank 11, the second high temperature molten salt pump 12, the third low temperature molten salt valve 13, the second high temperature molten salt valve 14, the second low temperature molten salt pump 15, the heat exchanger 16 and the third high temperature molten salt pump17.
低温熔盐罐1通过低温熔盐泵2与吸热器3连接；吸热器3分别与第一储盐罐6和第二储盐罐11的输入端连接，吸热器3与第一储盐罐6之间的管路上设有第一高温熔盐阀9，吸热器3与第二储盐罐11之间的管路上设有第二高温熔盐阀14；第一储盐罐6的输出端分别与低温熔盐罐1和高温熔盐罐4连接，第一储盐罐6与低温熔盐罐1之间通过两条并列的支路连接，第一条支路上设有第一低温熔盐泵10，第二条支路上设有第二低温熔盐阀8和第一低温熔盐阀5；第二储盐罐11通过第三高温熔盐泵17与高温熔盐罐4连接，第二储盐罐11 与低温熔盐罐1之间通过两条并列的支路连接，第一条支路上设有第二低温熔盐泵15，第二条支路上设有第三低温熔盐阀13和第一低温熔盐阀5；高温熔盐罐4通过换热器16及第一低温熔盐阀5与低温熔盐罐1连接；第二低温熔盐阀8和第三低温熔盐阀13并联设置在换热器16于第一低温熔盐阀5之间的管路上。The low-temperature molten salt tank 1 is connected to the heat absorber 3 through the low-temperature molten salt pump 2; The pipeline between the salt tanks 6 is provided with a first high-temperature molten salt valve 9, and the pipeline between the heat absorber 3 and the second salt storage tank 11 is provided with a second high-temperature molten salt valve 14; the first salt storage tank 6 The output ends of the two are respectively connected with the low-temperature molten salt tank 1 and the high-temperature molten salt tank 4, and the first salt storage tank 6 and the low-temperature molten salt tank 1 are connected through two parallel branches, and the first branch is provided with a first A low-temperature molten salt pump 10, a second low-temperature molten salt valve 8 and a first low-temperature molten salt valve 5 are provided on the second branch; the second salt storage tank 11 is connected to the high-temperature molten salt tank 4 through a third high-temperature molten salt pump 17 , the second low-temperature molten salt tank 11 is connected to the low-temperature molten salt tank 1 through two parallel branches, the first branch is provided with a second low-temperature molten salt pump 15, and the second branch is provided with a third low-temperature molten salt pump. The salt valve 13 and the first low temperature molten salt valve 5; the high temperature molten salt tank 4 is connected with the low temperature molten salt tank 1 through the heat exchanger 16 and the first low temperature molten salt valve 5; the second low temperature molten salt valve 8 and the third low temperature molten salt tank The salt valve 13 is arranged in parallel on the pipeline between the heat exchanger 16 and the first low temperature molten salt valve 5 .
高温熔盐罐4与低温熔盐罐1通过第一高温熔盐泵7及换热器16连接。The high-temperature molten salt tank 4 is connected to the low-temperature molten salt tank 1 through a first high-temperature molten salt pump 7 and a heat exchanger 16 .
第一储盐罐6和第二储盐罐11之间为并联排列的方式，根据系统工况，还能够并联设置多个储盐罐，储盐罐的数量不少于2个。The first salt storage tank 6 and the second salt storage tank 11 are arranged in parallel, and according to the working conditions of the system, multiple salt storage tanks can also be arranged in parallel, and the number of salt storage tanks is not less than two.
系统蓄热过程，第一储盐罐6和第二储盐罐11中充满低温熔盐，首先通过第一低温熔盐泵10将第一储盐罐6中低温熔盐输送到低温熔盐罐1，然后通过低温熔盐泵2将低温熔盐罐 1中的低温熔盐抽入到吸热器3中，关闭第二高温熔盐阀14，打开第一高温熔盐阀9，从吸热器3中流出的高温熔盐流进第一储盐罐6中，高温熔盐通过第二高温熔盐泵12流入高温熔盐罐4中，然后通过第一高温熔盐泵7进入换热器16进行换热，同时关闭第三低温熔盐阀13，第二低温熔盐阀8，打开第一低温熔盐阀5，使流出换热器16的低温熔盐流入低温熔盐罐1中，低温熔盐泵2的流量大于第二高温熔盐泵12和第一高温熔盐泵7的流量，因此直至第一储盐罐6中充满高温熔盐，依照此流程使第二储盐罐11中充满高温熔盐。In the thermal storage process of the system, the first salt storage tank 6 and the second salt storage tank 11 are filled with low-temperature molten salt, and the first low-temperature molten salt pump 10 is used to transport the low-temperature molten salt in the first salt storage tank 6 to the low-temperature molten salt tank 1. Then the low-temperature molten salt in the low-temperature molten salt tank 1 is pumped into the heat absorber 3 through the low-temperature molten salt pump 2, the second high-temperature molten salt valve 14 is closed, the first high-temperature molten salt valve 9 is opened, and the The high-temperature molten salt flowing out of the device 3 flows into the first salt storage tank 6, the high-temperature molten salt flows into the high-temperature molten salt tank 4 through the second high-temperature molten salt pump 12, and then enters the heat exchanger through the first high-temperature molten salt pump 7 16 for heat exchange, while closing the third low-temperature molten salt valve 13 and the second low-temperature molten salt valve 8, opening the first low-temperature molten salt valve 5, so that the low-temperature molten salt flowing out of the heat exchanger 16 flows into the low-temperature molten salt tank 1, The flow of the low-temperature molten salt pump 2 is greater than the flow of the second high-temperature molten salt pump 12 and the first high-temperature molten salt pump 7, so until the first salt storage tank 6 is filled with high-temperature molten salt, the second salt storage tank 11 Filled with high temperature molten salt.
系统放热过程，第一储盐罐6和第二储盐罐11中充满高温熔盐，首先第一储盐罐6中的高温熔盐通过第二高温熔盐泵12进入高温熔盐罐4中，然后通过第一高温熔盐泵7流入换热器16进行换热，同时关闭第三低温熔盐阀13，第二低温熔盐阀8，打开第一低温熔盐阀5，低温熔盐从换热器16流入到低温熔盐罐1中，直至第一储盐罐6中高温熔盐全部排出，此时低温熔盐罐1中充满低温熔盐。依此方法，储盐罐11中的高温熔盐通过第三高温熔盐泵17进入高温熔盐罐4中，然后通过第一高温熔盐泵7流入换热器16进行换热，同时关闭第三低温熔盐阀13，第一低温熔盐阀5，打开第二低温熔盐阀8，低温熔盐从换热器16流入第一储盐罐6中，直至第二储盐罐11中高温熔盐全部排出，此时第一储盐罐6中充满低温熔盐。During the exothermic process of the system, the first salt storage tank 6 and the second salt storage tank 11 are filled with high-temperature molten salt. First, the high-temperature molten salt in the first salt storage tank 6 enters the high-temperature molten salt tank 4 through the second high-temperature molten salt pump 12 , and then flow into the heat exchanger 16 through the first high-temperature molten salt pump 7 for heat exchange, and at the same time close the third low-temperature molten salt valve 13, the second low-temperature molten salt valve 8, open the first low-temperature molten salt valve 5, and the low-temperature molten salt Flow from the heat exchanger 16 into the low-temperature molten salt tank 1 until all the high-temperature molten salt in the first storage tank 6 is discharged, at which time the low-temperature molten salt tank 1 is filled with low-temperature molten salt. According to this method, the high-temperature molten salt in the salt storage tank 11 enters the high-temperature molten salt tank 4 through the third high-temperature molten salt pump 17, and then flows into the heat exchanger 16 through the first high-temperature molten salt pump 7 for heat exchange, and at the same time, the second high-temperature molten salt pump is turned off. Three low-temperature molten salt valves 13, the first low-temperature molten salt valve 5, open the second low-temperature molten salt valve 8, and the low-temperature molten salt flows from the heat exchanger 16 into the first salt storage tank 6 until the high temperature in the second salt storage tank 11 The molten salt is all discharged, and now the first salt storage tank 6 is full of low-temperature molten salt.
实施例2Example 2
与实施例1相类似地，本实施例中的结构中提供了三个储盐罐，按照熔盐储能系统的工作需要，以满足系统的工作要求；第三储盐罐与第一储盐罐6、第二储盐罐11相并联，三个储盐罐采用并联排列方式布设；此外，当任何一个储盐罐发生故障时候，此系统均可以正常稳定运行，保证整个安全可靠性。Similar to Embodiment 1, three salt storage tanks are provided in the structure of this embodiment, according to the working needs of the molten salt energy storage system, to meet the working requirements of the system; the third salt storage tank and the first salt storage tank Tank 6 and the second salt storage tank 11 are connected in parallel, and the three salt storage tanks are arranged in parallel; in addition, when any salt storage tank fails, the system can operate normally and stably, ensuring the overall safety and reliability.
本实用新型实施例1、实施2提供的一种多罐式熔盐储能系统，通过并联排列多个储盐罐，减小了单个储盐罐的体积，提高了熔盐罐利用率，降低了储盐罐加工制造难度和投资成本，同时避免在熔盐罐底部开孔，降低了熔盐泄露风险，任何一个单一储盐罐发生故障，系统均可以正常稳定运行，增加了系统运行的安全可靠性。A multi-tank molten salt energy storage system provided by Embodiment 1 and Embodiment 2 of the utility model, by arranging multiple salt storage tanks in parallel, reduces the volume of a single salt storage tank, improves the utilization rate of molten salt tanks, and reduces It reduces the difficulty of processing and manufacturing salt storage tanks and investment costs, and avoids opening holes at the bottom of molten salt tanks, reducing the risk of molten salt leakage. If any single salt storage tank fails, the system can operate normally and stably, increasing the safety of system operation reliability.
最后应说明的是：以上实施例仅用以说明本实用新型的技术方案，而非对其限制；尽管参照前述实施例对本实用新型进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本实用新型个实施例技术方案的精神和范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the embodiments of the present invention. and range.
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