CN201867101U - Heat exchange system device for long-distance heat transfer - Google Patents
Heat exchange system device for long-distance heat transfer Download PDFInfo
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- 239000003546 flue gas Substances 0.000 description 1
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Abstract
本实用新型公开了一种远距离传热的热交换系统装置，即在高温换热器的热源输入、输出端连接热源，低温换热器的冷源输入、输出端连接冷源，高温换热器的换热介质输出端连接低温换热器的换热介质输入端，低温换热器的换热介质输出端连接循环泵的输入端，循环泵的输出端连接高温换热器的换热介质输入端。本装置克服了传统热管换热器的缺陷，适用于远距离传热系统中的热量交换，且达到良好的热交换效果。
The utility model discloses a heat exchange system device for long-distance heat transfer, that is, the heat source input and output ends of the high-temperature heat exchanger are connected to the heat source, the cold source input and output ends of the low-temperature heat exchanger are connected to the cold source, and the high-temperature heat exchange The heat exchange medium output end of the low temperature heat exchanger is connected to the heat exchange medium input end of the low temperature heat exchanger, the heat exchange medium output end of the low temperature heat exchanger is connected to the input end of the circulation pump, and the output end of the circulation pump is connected to the heat exchange medium of the high temperature heat exchanger input. The device overcomes the defects of the traditional heat pipe heat exchanger, is suitable for heat exchange in a long-distance heat transfer system, and achieves a good heat exchange effect.
Description
技术领域technical field
本实用新型涉及一种远距离传热的热交换系统装置。The utility model relates to a heat exchange system device for long-distance heat transfer.
背景技术Background technique
热交换装置广泛应用于热源与冷源的热量交换，如在某些设备或机组中有大量需要快速散热和/或传热的过程，常使用热管换热器作为热交换设备，热管换热器的相当导热系数可达105 w/m.k的数量级，而最好的高导热金属材料的导热系数仅为102w/m.k，所以热管换热器不仅具有导热性能好，而且结构简单，工作可靠，温度均匀等良好性能。然而在很多传热工程中，热源和冷源常位于不同的地方，且需远距离传热，如在火电厂的锅炉排烟余热回收利用系统中，回收高温烟气热量用来加热锅炉给水或者预热空气等，在该类热量回收利用系统的传热过程中，回收热量的位置和需要使用热量的位置往往相距几十米甚至几百米的距离。在如此长距离的热量传递过程，尽管可以应用分离式的热管换热器，但是热管换热器中循环流体的动力是靠微小的毛细力或重力，因此循环流体在长距离传输过程中其换热效果较差，再加上热管换热器受到传热极限的限制，难以发挥热管换热器的优良传热性能。在这种远距离传热系统中热管换热器不适合应用。Heat exchange devices are widely used in heat exchange between heat sources and cold sources. For example, in some equipment or units, there are a large number of processes that require rapid heat dissipation and/or heat transfer. Heat pipe heat exchangers are often used as heat exchange equipment. Heat pipe heat exchangers The equivalent thermal conductivity can reach the order of 10 5 w/mk, while the thermal conductivity of the best high thermal conductivity metal material is only 10 2 w/mk, so the heat pipe heat exchanger not only has good thermal conductivity, but also has a simple structure and reliable operation , uniform temperature and other good properties. However, in many heat transfer projects, the heat source and cold source are often located in different places, and long-distance heat transfer is required. For example, in the boiler exhaust heat recovery system of a thermal power plant, the heat of high-temperature flue gas is recovered to heat the boiler feed water or Preheating air, etc. In the heat transfer process of this type of heat recovery and utilization system, the location where the heat is recovered and the location where the heat is needed are often separated by tens of meters or even hundreds of meters. In such a long-distance heat transfer process, although a separate heat pipe heat exchanger can be used, the power of the circulating fluid in the heat pipe heat exchanger depends on the tiny capillary force or gravity, so the circulation of the circulating fluid during long-distance transmission The thermal effect is poor, and the heat pipe heat exchanger is limited by the heat transfer limit, so it is difficult to exert the excellent heat transfer performance of the heat pipe heat exchanger. Heat pipe heat exchangers are not suitable for such long-distance heat transfer systems.
发明内容Contents of the invention
本实用新型所要解决的技术问题是提供一种远距离传热的热交换系统装置，本装置克服了传统热管换热器的缺陷，适用于远距离传热系统中的热量交换，且达到良好的热交换效果。The technical problem to be solved by the utility model is to provide a long-distance heat transfer heat exchange system device, which overcomes the defects of traditional heat pipe heat exchangers, is suitable for heat exchange in long-distance heat transfer systems, and achieves good heat exchange effect.
为解决上述技术问题，本实用新型远距离传热的热交换系统装置包括热源和冷源，还包括高温换热器、低温换热器和循环泵，所述高温换热器的热源输入、输出端连接所述热源，所述低温换热器的冷源输入、输出端连接所述冷源，所述高温换热器的换热介质输出端连接所述低温换热器的换热介质输入端，所述低温换热器的换热介质输出端连接所述循环泵的输入端，所述循环泵的输出端连接所述高温换热器的换热介质输入端。In order to solve the above-mentioned technical problems, the heat exchange system device for long-distance heat transfer of the present invention includes a heat source and a cold source, and also includes a high-temperature heat exchanger, a low-temperature heat exchanger and a circulation pump. The heat source input and output of the high-temperature heat exchanger connected to the heat source, the cold source input and output ends of the low-temperature heat exchanger are connected to the cold source, and the heat-exchange medium output end of the high-temperature heat exchanger is connected to the heat-exchange medium input end of the low-temperature heat exchanger The output end of the heat exchange medium of the low temperature heat exchanger is connected to the input end of the circulation pump, and the output end of the circulation pump is connected to the input end of the heat exchange medium of the high temperature heat exchanger.
上述高温换热器的换热介质输出端与低温换热器的换热介质输入端之间可以通过蒸汽管路连接，上述低温换热器的换热介质输出端、循环泵的输入输出端和高温换热器的换热介质输入端之间可以通过液压管路连接。The heat exchange medium output end of the above-mentioned high temperature heat exchanger and the heat exchange medium input end of the low temperature heat exchanger can be connected through steam pipelines, the heat exchange medium output end of the above low temperature heat exchanger, the input and output ends of the circulation pump and The input ends of the heat exchange medium of the high temperature heat exchanger can be connected through hydraulic pipelines.
为提高本装置的换热效果，本热交换系统装置还包括低温储液器，所述低温储液器输入端连接所述低温换热器输出端，所述低温储液器输出端连接所述循环泵的输入端，所述低温储液器位于所述低温换热器的下方。In order to improve the heat exchange effect of the device, the heat exchange system device also includes a low-temperature liquid storage device, the input end of the low-temperature liquid storage device is connected to the output end of the low-temperature heat exchanger, and the output end of the low-temperature liquid storage device is connected to the The input end of the circulation pump, the cryogenic liquid reservoir is located below the cryogenic heat exchanger.
为提高本装置的换热效果，本热交换系统装置还包括高温储液器，所述高温储液器输入端连接所述循环泵输出端，所述高温储液器输出端连接所述高温换热器输入端，所述高温储液器与所述高温换热器位于同一高度。In order to improve the heat exchange effect of the device, the heat exchange system device also includes a high-temperature liquid storage device, the input end of the high-temperature liquid storage device is connected to the output end of the circulation pump, and the output end of the high-temperature liquid storage device is connected to the high-temperature heat exchanger. At the heat input end, the high temperature liquid reservoir is located at the same height as the high temperature heat exchanger.
为便于设备或机组中多点热源的采集及多点冷源的换热，上述高温换热器和低温换热器可以包括多个串联或并联的热交换器。In order to facilitate the collection of multi-point heat sources and the heat exchange of multi-point cold sources in equipment or units, the above-mentioned high-temperature heat exchangers and low-temperature heat exchangers may include multiple series or parallel heat exchangers.
为发挥本热交换系统装置的高效传热性能，便于管路内蒸汽或液体的流动，上述蒸汽管路和液压管路以及与其连接的高温换热器和低温换热器内在充注传热介质前是真空。In order to exert the high-efficiency heat transfer performance of the heat exchange system device and facilitate the flow of steam or liquid in the pipeline, the above-mentioned steam pipeline and hydraulic pipeline, as well as the high-temperature heat exchanger and low-temperature heat exchanger connected to it, are internally filled with heat transfer medium The front is a vacuum.
同样上述低温储液器和高温储液器在充注传热介质前也是真空。Similarly, the above-mentioned low-temperature liquid reservoir and high-temperature liquid reservoir are also vacuum before being filled with heat transfer medium.
由于本实用新型远距离传热的热交换系统装置采用了上述技术方案，即在高温换热器的热源输入、输出端连接热源，低温换热器的冷源输入、输出端连接冷源，高温换热器的换热介质输出端连接低温换热器的换热介质输入端，低温换热器的换热介质输出端连接循环泵的输入端，循环泵的输出端连接高温换热器的换热介质输入端。本装置克服了传统热管换热器的缺陷，适用于远距离传热系统中的热量交换，且达到良好的热交换效果。Since the heat exchange system device for long-distance heat transfer of the utility model adopts the above-mentioned technical scheme, that is, the heat source input and output ends of the high-temperature heat exchanger are connected to the heat source, and the cold source input and output ends of the low-temperature heat exchanger are connected to the cold source. The heat exchange medium output end of the heat exchanger is connected to the heat exchange medium input end of the low temperature heat exchanger, the heat exchange medium output end of the low temperature heat exchanger is connected to the input end of the circulation pump, and the output end of the circulation pump is connected to the heat exchange medium end of the high temperature heat exchanger. Thermal medium input. The device overcomes the defects of the traditional heat pipe heat exchanger, is suitable for heat exchange in a long-distance heat transfer system, and achieves a good heat exchange effect.
附图说明Description of drawings
下面结合附图和实施方式对本实用新型作进一步的详细说明：Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
图1为本实用新型远距离传热的热交换系统装置的结构示意图。Fig. 1 is a structural schematic diagram of a heat exchange system device for long-distance heat transfer of the present invention.
具体实施方式Detailed ways
如图1所示，本实用新型远距离传热的热交换系统装置包括热源1和冷源2，还包括高温换热器3、低温换热器5和循环泵7，所述高温换热器3的热源输入、输出端连接所述热源1，所述低温换热器5的冷源输入、输出端连接所述冷源2，所述高温换热器3的换热介质输出端连接所述低温换热器5的换热介质输入端，所述低温换热器5的换热介质输出端连接所述循环泵7的输入端，所述循环泵7的输出端连接所述高温换热器3的换热介质输入端。As shown in Figure 1, the heat exchange system device for long-distance heat transfer of the present invention includes a heat source 1 and a cold source 2, and also includes a high-temperature heat exchanger 3, a low-temperature heat exchanger 5 and a circulation pump 7, and the high-temperature heat exchanger The heat source input and output ends of 3 are connected to the heat source 1, the cold source input and output ends of the low temperature heat exchanger 5 are connected to the cold source 2, and the heat exchange medium output ends of the high temperature heat exchanger 3 are connected to the The heat exchange medium input end of the low temperature heat exchanger 5, the heat exchange medium output end of the low temperature heat exchanger 5 is connected to the input end of the circulation pump 7, and the output end of the circulation pump 7 is connected to the high temperature heat exchanger 3 heat exchange medium input end.
上述高温换热器3的换热介质输出端与低温换热器5的换热介质输入端之间可以通过蒸汽管路8连接，上述低温换热器5的换热介质输出端、循环泵7的输入输出端和高温换热器3的换热介质输入端之间可以通过液压管路9连接。The heat exchange medium output end of the above-mentioned high temperature heat exchanger 3 and the heat exchange medium input end of the low temperature heat exchanger 5 can be connected through a steam pipeline 8, the heat exchange medium output end of the above low temperature heat exchanger 5, the circulation pump 7 The input and output ends of the high-temperature heat exchanger 3 and the heat exchange medium input end of the high-temperature heat exchanger 3 can be connected through a hydraulic pipeline 9 .
为提高本装置的换热效果，本热交换系统装置还包括低温储液器6，所述低温储液器6输入端连接所述低温换热器5输出端，所述低温储液器6输出端连接所述循环泵7的输入端，所述低温储液器6位于所述低温换热器5的下方，便于所述低温换热器5内液体流入所述低温储液器6内。In order to improve the heat exchange effect of the device, the heat exchange system device also includes a low-temperature liquid storage device 6, the input end of the low-temperature liquid storage device 6 is connected to the output end of the low-temperature heat exchanger 5, and the output end of the low-temperature liquid storage device 6 is The end is connected to the input end of the circulation pump 7, and the low-temperature liquid reservoir 6 is located below the low-temperature heat exchanger 5, so that the liquid in the low-temperature heat exchanger 5 flows into the low-temperature liquid reservoir 6.
为提高本装置的换热效果，本热交换系统装置还包括高温储液器4，所述高温储液器4输入端连接所述循环泵7输出端，所述高温储液器4输出端连接所述高温换热器3输入端，所述高温储液器4与所述高温换热器3位于同一高度，便于所述高温储液器4内的液体流入所述高温换热器3内。In order to improve the heat exchange effect of the device, the heat exchange system device also includes a high-temperature liquid storage device 4, the input end of the high-temperature liquid storage device 4 is connected to the output end of the circulation pump 7, and the output end of the high-temperature liquid storage device 4 is connected to The input end of the high-temperature heat exchanger 3 and the high-temperature liquid reservoir 4 are located at the same height as the high-temperature heat exchanger 3 , so that the liquid in the high-temperature liquid reservoir 4 flows into the high-temperature heat exchanger 3 .
为便于设备或机组中多点热源的采集及多点冷源的换热，上述高温换热器3和低温换热器5可以包括多个串联或并联的热交换器。In order to facilitate the collection of multi-point heat sources and the heat exchange of multi-point cold sources in equipment or units, the above-mentioned high-temperature heat exchanger 3 and low-temperature heat exchanger 5 may include multiple series or parallel heat exchangers.
为发挥本热交换系统装置的高效传热性能，便于管路内蒸汽或液体的流动，上述蒸汽管路和液压管路以及与其连接的高温换热器和低温换热器内在充注传热介质前是真空。In order to exert the high-efficiency heat transfer performance of the heat exchange system device and facilitate the flow of steam or liquid in the pipeline, the above-mentioned steam pipeline and hydraulic pipeline, as well as the high-temperature heat exchanger and low-temperature heat exchanger connected to it, are internally filled with heat transfer medium The front is a vacuum.
同样上述低温储液器和高温储液器在充注传热介质前也是真空。Similarly, the above-mentioned low-temperature liquid reservoir and high-temperature liquid reservoir are also vacuum before being filled with heat transfer medium.
本装置中高温换热器吸收热源的热量并使高温换热器内液体汽化成高温蒸汽，高温蒸汽经蒸汽管路传输至低温换热器，低温换热器经冷源吸收高温蒸汽热量后高温蒸汽转换为液体并经循环泵传输至高温换热器，同时冷源提高了温度，达到了远距离热交换的目的。低温储液器与高温储液器的设置便于换热后液体的存储，低温换热器的高温蒸汽经换热后成液体存储于低温储液器中，低温储液器中的液体经循环泵注入高温储液器中用于补充高温换热器内汽化的液体，如此达到更好的换热效果。In this device, the high-temperature heat exchanger absorbs the heat of the heat source and vaporizes the liquid in the high-temperature heat exchanger into high-temperature steam. The high-temperature steam is transmitted to the low-temperature heat exchanger through the steam pipeline. The steam is converted into liquid and transported to the high-temperature heat exchanger through the circulation pump, and the cold source increases the temperature to achieve the purpose of long-distance heat exchange. The arrangement of low-temperature liquid storage and high-temperature liquid storage facilitates the storage of liquid after heat exchange. The high-temperature steam of the low-temperature heat exchanger is converted into liquid after heat exchange and stored in the low-temperature liquid storage. The liquid in the low-temperature liquid storage is passed through the circulation pump. It is injected into the high-temperature liquid reservoir to supplement the vaporized liquid in the high-temperature heat exchanger, so as to achieve better heat exchange effect.
本装置保持了传统热管换热器优良的传热性能，同时克服了热管换热器的连续流动极限、冷启动极限、粘性极限、毛细极限、冷凝极限、沸腾极限等热管换热器的传热缺陷；为设备或机组的异地或远程的热源与冷源的热交换提供了一种高效的传热装置，可以大幅减少换热器的材料成本；对各类锅炉排烟余热回收利用提供了一种可行高效的方法，可实现多点热源和冷源的异地或远程热量回收或热量分配。This device maintains the excellent heat transfer performance of the traditional heat pipe heat exchanger, and at the same time overcomes the continuous flow limit, cold start limit, viscosity limit, capillary limit, condensation limit, boiling limit, etc. of the heat pipe heat exchanger. defects; it provides a high-efficiency heat transfer device for heat exchange between heat sources and cold sources in different places or remote places of equipment or units, which can greatly reduce the material cost of heat exchangers; A feasible and efficient method to realize off-site or remote heat recovery or heat distribution of multi-point heat sources and cold sources.
本装置也可可结合现有的自动控制方法，通过采集流量、温度、压力、液位等信号来自动控制本装置的热量交换过程，最大发挥本装置的优良传热性能。The device can also be combined with existing automatic control methods to automatically control the heat exchange process of the device by collecting signals such as flow, temperature, pressure, and liquid level, so as to maximize the excellent heat transfer performance of the device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200403A (en) * | 2011-06-28 | 2011-09-28 | 北京圆能工业技术有限公司 | Branch-control and phase-change heat exchange system and method based on two-stage steam-liquid heat exchanger |
| CN105258541A (en) * | 2015-11-23 | 2016-01-20 | 丁海平 | Superconducting heat exchanger |
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2010
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200403A (en) * | 2011-06-28 | 2011-09-28 | 北京圆能工业技术有限公司 | Branch-control and phase-change heat exchange system and method based on two-stage steam-liquid heat exchanger |
| CN102200403B (en) * | 2011-06-28 | 2013-03-20 | 北京圆能工业技术有限公司 | Branch-control and phase-change heat exchange system and method based on two-stage steam-liquid heat exchanger |
| CN105258541A (en) * | 2015-11-23 | 2016-01-20 | 丁海平 | Superconducting heat exchanger |
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