技术领域Technical Field
本发明属于换热器技术领域，涉及一种便于水侧除垢的印刷电路板换热系统。The invention belongs to the technical field of heat exchangers and relates to a printed circuit board heat exchange system which is convenient for water side descaling.
背景技术Background technique
印刷电路板换热器是一种高效、紧凑、可同时承受高温高压的新型换热技术，近20年来在国内发展迅速，从实验室研究逐步开始推广应用。印刷电路板换热器的主要生产流程为：(1)采用光化学蚀刻的方法在换热板片上蚀刻出流道，换热板片的厚度为1-3mm，蚀刻的流道横截面为半圆形，其直径为1-2mm；(2)将蚀刻好的换热板片叠放在一起，形成一个换热芯体，把换热芯体放到扩散焊接炉中进行一体化成型，即换热板片的接触面之间形成原子扩散层；(3)在换热芯体上焊接集箱和接管等，形成印刷电路板换热器。印刷电路板换热器的流体通道有成千上万个，其比表面积可以达到1000m2/m3以上，最高运行压力高达90MPa，最高运行温度高达800℃。由于上述诸多优点，印刷电路板换热器可应用于超临界二氧化碳布雷顿循环、燃料电池、海上石油钻井平台、航空航天等领域，市场潜力巨大。Printed circuit board heat exchanger is a new type of heat exchange technology that is efficient, compact, and can withstand high temperature and high pressure. It has developed rapidly in China in the past 20 years and has gradually been promoted and applied from laboratory research. The main production process of printed circuit board heat exchanger is: (1) Use photochemical etching to etch flow channels on the heat exchange plate. The thickness of the heat exchange plate is 1-3mm, and the cross-section of the etched flow channel is semicircular with a diameter of 1-2mm; (2) Stack the etched heat exchange plates together to form a heat exchange core, and put the heat exchange core into a diffusion welding furnace for integrated molding, that is, an atomic diffusion layer is formed between the contact surfaces of the heat exchange plates; (3) Weld the header and pipe on the heat exchange core to form a printed circuit board heat exchanger. There are thousands of fluid channels in the printed circuit board heat exchanger, and its specific surface area can reach more than1000m2 /m3 , the maximum operating pressure is up to 90MPa, and the maximum operating temperature is up to 800℃. Due to the above advantages, printed circuit board heat exchangers can be used in supercritical carbon dioxide Brayton cycle, fuel cells, offshore oil drilling platforms, aerospace and other fields, and have huge market potential.
对于印刷电路板换热器来说，水是一种常用换热介质，例如超临界二氧化碳布雷顿循环中的预冷器，其一侧为超临界二氧化碳，另一侧为循环冷却水。当水中含有的杂质或钙镁等易结垢离子较多时，印刷电路板换热器的芯体通道上就容易形成垢层，这不仅会导致水侧通道堵塞，增大水侧运行阻力，还会造成增大换热热阻，降低换热器的总体传热性能。然而，由于印刷电路板换热器的换热器流道直径较小，仅为1-3mm，且流道长度较长，当流道堵塞后多采用高压水枪来冲洗换热器流道。这种方法往往清洗效果一般，因为印刷电路板换热器的集箱进口尺寸较小而集箱尺寸较大，往往难以对流道进行全面的冲洗。另外，还可以采用在流道中通入化学清洗液，将结垢产物清洗下来。这种方法的清洗辅助设备繁多且流程复杂，费时费力。此外，上述两种方法都无法做到在线清洗。For printed circuit board heat exchangers, water is a commonly used heat exchange medium. For example, the precooler in the supercritical carbon dioxide Brayton cycle has supercritical carbon dioxide on one side and circulating cooling water on the other side. When the water contains a lot of impurities or scaling ions such as calcium and magnesium, a scale layer is easily formed on the core channel of the printed circuit board heat exchanger, which will not only cause the water side channel to be blocked and increase the running resistance on the water side, but also increase the heat exchange thermal resistance and reduce the overall heat transfer performance of the heat exchanger. However, since the heat exchanger flow channel diameter of the printed circuit board heat exchanger is small, only 1-3mm, and the flow channel length is long, a high-pressure water gun is often used to flush the heat exchanger flow channel when the flow channel is blocked. This method often has a general cleaning effect, because the header inlet size of the printed circuit board heat exchanger is small and the header size is large, and it is often difficult to fully flush the flow channel. In addition, chemical cleaning liquid can be passed into the flow channel to clean the scaling products. This method has many cleaning auxiliary equipment and a complicated process, which is time-consuming and labor-intensive. In addition, neither of the above two methods can achieve online cleaning.
发明内容Summary of the invention
本发明的目的在于克服上述现有技术的缺点，提供了一种便于水侧除垢的印刷电路板换热系统，该系统能够实现印刷电路板换热器的在线清洗。The purpose of the present invention is to overcome the disadvantages of the prior art and provide a printed circuit board heat exchange system that is convenient for water-side descaling. The system can realize online cleaning of the printed circuit board heat exchanger.
为达到上述目的，本发明公开了一种便于水侧除垢的印刷电路板换热系统，包括进口管路、出口管路及若干印刷电路板换热器，各印刷电路板换热器的入口与进口管路相连通，各印刷电路板换热器的出口与出口管路相连通，各印刷电路板换热器采用并联的方式连通。To achieve the above-mentioned purpose, the present invention discloses a printed circuit board heat exchange system which is convenient for water-side descaling, comprising an inlet pipeline, an outlet pipeline and a plurality of printed circuit board heat exchangers, wherein the inlet of each printed circuit board heat exchanger is connected with the inlet pipeline, the outlet of each printed circuit board heat exchanger is connected with the outlet pipeline, and each printed circuit board heat exchanger is connected in parallel.
所述印刷电路板换热器的入口与进口管路之间依次设置有水侧进口集箱及换热器进口阀门。A water side inlet header and a heat exchanger inlet valve are arranged in sequence between the inlet of the printed circuit board heat exchanger and the inlet pipeline.
水侧进口集箱与印刷电路板换热器的入口之间设置有水侧进口集箱法兰。A water side inlet header flange is arranged between the water side inlet header and the inlet of the printed circuit board heat exchanger.
水侧进口集箱的出口处设有水侧进口法兰。A water side inlet flange is provided at the outlet of the water side inlet header.
印刷电路板换热器的出口经水侧出口集箱及换热器出口阀门与出口管路相连通。The outlet of the printed circuit board heat exchanger is connected to the outlet pipeline through the water side outlet header and the heat exchanger outlet valve.
水侧出口集箱与印刷电路板换热器的出口之间设置有水侧出口集箱法兰。A water side outlet header flange is arranged between the water side outlet header and the outlet of the printed circuit board heat exchanger.
水侧出口集箱的出口处设置有水侧出口法兰。A water side outlet flange is arranged at the outlet of the water side outlet header.
所述印刷电路板换热器的侧面设有换热流体进口集箱及换热流体出口集箱。A heat exchange fluid inlet header and a heat exchange fluid outlet header are arranged on the side of the printed circuit board heat exchanger.
所述印刷电路板换热器内设置有换热芯体，其中，所述换热芯体中的水侧流道为直通道。A heat exchange core is arranged in the printed circuit board heat exchanger, wherein the water side flow channel in the heat exchange core is a straight channel.
在正常工作时，来水通过进口管路分配到各印刷电路板换热器中参与换热，各印刷电路板换热器输出的水汇入出口管路；当任一印刷电路板换热器中换热芯体的水侧流道发生堵塞而需要清洗时，则将该印刷电路板换热器进行隔离，再拆除该印刷电路板换热器，对该印刷电路板换热器中换热芯体的水侧流道进行清洗。During normal operation, incoming water is distributed to each printed circuit board heat exchanger through the inlet pipe to participate in heat exchange, and the water output by each printed circuit board heat exchanger is merged into the outlet pipe; when the water side flow channel of the heat exchange core in any printed circuit board heat exchanger is blocked and needs to be cleaned, the printed circuit board heat exchanger is isolated, and then the printed circuit board heat exchanger is dismantled, and the water side flow channel of the heat exchange core in the printed circuit board heat exchanger is cleaned.
本发明具有以下有益效果：The present invention has the following beneficial effects:
本发明所述的便于水侧除垢的印刷电路板换热系统在具体操作时，各印刷电路板换热器采用并联的方式连通，当任一印刷电路板换热器中换热芯体的水侧流道发生堵塞而需要清洗时，则将该印刷电路板换热器进行隔离后清洗，实现印刷电路板换热器的在线清洗，从而不影响系统的正常运行。In the specific operation of the printed circuit board heat exchange system for water-side descaling described in the present invention, each printed circuit board heat exchanger is connected in parallel. When the water-side flow channel of the heat exchange core in any printed circuit board heat exchanger is blocked and needs to be cleaned, the printed circuit board heat exchanger is isolated and then cleaned, thereby realizing online cleaning of the printed circuit board heat exchanger, thereby not affecting the normal operation of the system.
进一步，当需要对任一印刷电路板换热器进行清洗时，则关闭该印刷电路板换热器对应的换热器进口阀门及换热器出口阀门，拆解水侧进口法兰及水侧进口集箱法兰，将水侧进口集箱拆下来；拆解水侧出口法兰及水侧出口集箱法兰，将水侧出口集箱拆下来，从而将换热芯体的水侧流道的进口和出口截面裸漏出来，这样就可以采用高压水枪冲洗或细长钢条通穿流道等物理清理方法进行清洗，实现彻底无死角的物理清理。Furthermore, when any printed circuit board heat exchanger needs to be cleaned, the heat exchanger inlet valve and heat exchanger outlet valve corresponding to the printed circuit board heat exchanger are closed, the water side inlet flange and the water side inlet header flange are disassembled, and the water side inlet header is removed; the water side outlet flange and the water side outlet header flange are disassembled, and the water side outlet header is removed, thereby exposing the inlet and outlet cross-sections of the water side flow channel of the heat exchange core, so that physical cleaning methods such as high-pressure water gun flushing or slender steel bars passing through the flow channel can be used for cleaning, thereby achieving thorough physical cleaning without dead ends.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明的便于水侧除垢的印刷电路板换热系统示意图；FIG1 is a schematic diagram of a printed circuit board heat exchange system for facilitating water-side descaling according to the present invention;
图2为本发明的单个印刷电路板换热器1示意图；FIG2 is a schematic diagram of a single printed circuit board heat exchanger 1 of the present invention;
图3为本发明中换热芯体2的流道示意图。FIG3 is a schematic diagram of the flow path of the heat exchange core 2 in the present invention.
图中，1为印刷电路板换热器、2为换热芯体、3为直通道、4为换热器进口阀门、5为水侧进口法兰、6为水侧进口集箱法兰、7为水侧出口集箱法兰、8为水侧出口法兰、9为换热器出口阀门、10为水侧出口集箱、11为水侧进口集箱、12为进口管路、13为出口管路、14为换热流体进口集箱、15为换热流体出口集箱。In the figure, 1 is a printed circuit board heat exchanger, 2 is a heat exchange core, 3 is a straight channel, 4 is a heat exchanger inlet valve, 5 is a water side inlet flange, 6 is a water side inlet header flange, 7 is a water side outlet header flange, 8 is a water side outlet flange, 9 is a heat exchanger outlet valve, 10 is a water side outlet header, 11 is a water side inlet header, 12 is an inlet pipeline, 13 is an outlet pipeline, 14 is a heat exchange fluid inlet header, and 15 is a heat exchange fluid outlet header.
具体实施方式Detailed ways
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，不是全部的实施例，而并非要限制本发明公开的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要的混淆本发明公开的概念。基于本发明中的实施例，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，都应当属于本发明保护的范围。In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.
在附图中示出了根据本发明公开实施例的结构示意图。这些图并非是按比例绘制的，其中为了清楚表达的目的，放大了某些细节，并且可能省略了某些细节。图中所示出的各种区域、层的形状及它们之间的相对大小、位置关系仅是示例性的，实际中可能由于制造公差或技术限制而有所偏差，并且本领域技术人员根据实际所需可以另外设计具有不同形状、大小、相对位置的区域/层。The accompanying drawings show schematic diagrams of structures according to embodiments disclosed in the present invention. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions/layers with different shapes, sizes, and relative positions according to actual needs.
参考图1、图2及图3，本发明所述的便于水侧除垢的印刷电路板换热系统包括进口管路12、出口管路13及若干印刷电路板换热器1；1, 2 and 3, the printed circuit board heat exchange system for water-side descaling of the present invention comprises an inlet pipe 12, an outlet pipe 13 and a plurality of printed circuit board heat exchangers 1;
各印刷电路板换热器1的入口与进口管路12相连通，各印刷电路板换热器1的出口与出口管路13相连通。The inlet of each printed circuit board heat exchanger 1 is connected to the inlet pipeline 12 , and the outlet of each printed circuit board heat exchanger 1 is connected to the outlet pipeline 13 .
其中，所述印刷电路板换热器1的入口与进口管路12之间依次设置有水侧进口集箱11及换热器进口阀门4，其中，水侧进口集箱11与印刷电路板换热器1的入口之间设置有水侧进口集箱法兰6，水侧进口集箱11的出口处设有水侧进口法兰5。Among them, a water side inlet header 11 and a heat exchanger inlet valve 4 are arranged in sequence between the inlet of the printed circuit board heat exchanger 1 and the inlet pipeline 12, wherein a water side inlet header flange 6 is arranged between the water side inlet header 11 and the inlet of the printed circuit board heat exchanger 1, and a water side inlet flange 5 is arranged at the outlet of the water side inlet header 11.
印刷电路板换热器1的出口经水侧出口集箱10及换热器出口阀门9与出口管路13相连通，其中，水侧出口集箱10与印刷电路板换热器1的出口之间设置有水侧出口集箱法兰7，水侧出口集箱10的出口处设置有水侧出口法兰8。The outlet of the printed circuit board heat exchanger 1 is connected to the outlet pipeline 13 through the water side outlet header 10 and the heat exchanger outlet valve 9, wherein a water side outlet header flange 7 is arranged between the water side outlet header 10 and the outlet of the printed circuit board heat exchanger 1, and a water side outlet flange 8 is arranged at the outlet of the water side outlet header 10.
本实施例中，所述印刷电路板换热器1的侧面设有换热流体进口集箱14及换热流体出口集箱15，所述印刷电路板换热器1内设置有换热芯体2，其中，所述换热芯体2中的水侧流道3为直通道。In this embodiment, a heat exchange fluid inlet header 14 and a heat exchange fluid outlet header 15 are provided on the side of the printed circuit board heat exchanger 1, and a heat exchange core 2 is provided inside the printed circuit board heat exchanger 1, wherein the water side flow channel 3 in the heat exchange core 2 is a straight channel.
本实施例中，所述换热芯体2经光化学蚀刻和扩散焊接两种工艺制造而成。水侧流道3为换热板片上蚀刻出来的半圆形通道，其直径为0.5mm-3.0mm。In this embodiment, the heat exchange core 2 is manufactured by photochemical etching and diffusion welding. The water side flow channel 3 is a semicircular channel etched on the heat exchange plate, and its diameter is 0.5mm-3.0mm.
本实施例中，印刷电路板换热器1、换热流体出口集箱15以及换热流体进口集箱14中的换热流体为超临界二氧化碳、空气、氮气、氦气或蒸汽。In this embodiment, the heat exchange fluid in the printed circuit board heat exchanger 1, the heat exchange fluid outlet header 15 and the heat exchange fluid inlet header 14 is supercritical carbon dioxide, air, nitrogen, helium or steam.
本发明的工作原理为：The working principle of the present invention is:
正常工作时，来水通过进口管路12分配到各印刷电路板换热器1中参与换热，各印刷电路板换热器1输出的水汇入出口管路13；当任一印刷电路板换热器1中换热芯体2的水侧流道3发生堵塞而需要清理时，则通过对应换热器进口阀门4及换热器出口阀门9对该印刷电路板换热器1进行隔离，然后对该印刷电路板换热器1进行清洗，具体的，关闭该印刷电路板换热器1对应的换热器进口阀门4及换热器出口阀门9，拆解水侧进口法兰5及水侧进口集箱法兰6，将水侧进口集箱11拆下来；拆解水侧出口法兰8及水侧出口集箱法兰7，将水侧出口集箱10拆下来，从而将换热芯体2的水侧流道3的进口和出口截面裸漏出来，然后采用高压水冲洗水侧流道3，或采用细长的钢条疏通水侧流道3，将污垢清理出来，然后安装该印刷电路板换热器1。During normal operation, the incoming water is distributed to each printed circuit board heat exchanger 1 through the inlet pipe 12 to participate in heat exchange, and the water output by each printed circuit board heat exchanger 1 is merged into the outlet pipe 13; when the water side flow channel 3 of the heat exchange core 2 in any printed circuit board heat exchanger 1 is blocked and needs to be cleaned, the printed circuit board heat exchanger 1 is isolated through the corresponding heat exchanger inlet valve 4 and heat exchanger outlet valve 9, and then the printed circuit board heat exchanger 1 is cleaned. Specifically, the heat exchanger inlet valve 4 and heat exchanger outlet valve 9 corresponding to the printed circuit board heat exchanger 1 are closed, the water side inlet flange 5 and the water side inlet header flange 6 are disassembled, and the water side inlet header 11 is removed; the water side outlet flange 8 and the water side outlet header flange 7 are disassembled, and the water side outlet header 10 is removed, so that the inlet and outlet sections of the water side flow channel 3 of the heat exchange core 2 are exposed, and then the water side flow channel 3 is washed with high-pressure water, or the water side flow channel 3 is dredged with a slender steel bar to clean the dirt, and then the printed circuit board heat exchanger 1 is installed.
最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制，尽管参照上述实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者等同替换，而未脱离本发明精神和范围的任何修改或者等同替换，其均应涵盖在本发明的权利要求保护范围之内。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410308022.8ACN118009765A (en) | 2024-03-18 | 2024-03-18 | Printed circuit board heat exchange system convenient for water side descaling |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410308022.8ACN118009765A (en) | 2024-03-18 | 2024-03-18 | Printed circuit board heat exchange system convenient for water side descaling |
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| CN118009765Atrue CN118009765A (en) | 2024-05-10 |
| Application Number | Title | Priority Date | Filing Date |
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| CN202410308022.8APendingCN118009765A (en) | 2024-03-18 | 2024-03-18 | Printed circuit board heat exchange system convenient for water side descaling |
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| CN119468756A (en)* | 2024-10-31 | 2025-02-18 | 西安交通大学 | A printed circuit board heat exchange system capable of cleaning channel dirt |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119468756A (en)* | 2024-10-31 | 2025-02-18 | 西安交通大学 | A printed circuit board heat exchange system capable of cleaning channel dirt |
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