CN107966055A - A kind of high pressure compact heat exchanger and its method of work - Google Patents
A kind of high pressure compact heat exchanger and its method of work Download PDFInfo
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- CN107966055A CN107966055A CN201711410325.7A CN201711410325A CN107966055A CN 107966055 A CN107966055 A CN 107966055A CN 201711410325 A CN201711410325 A CN 201711410325A CN 107966055 A CN107966055 A CN 107966055A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 6
- 230000008676 import Effects 0.000 claims 4
- 238000003466 welding Methods 0.000 abstract description 6
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/086—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning having one or more openings therein forming tubular heat-exchange passages
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本发明提供了一种高压紧凑式换热器，壳体内布置层层叠合的换热板对，换热板对的两端分别穿过一管板，两个管板内侧分别与壳体两端相连，两个管板外侧分别与一封箱相连；换热板对内部形成低压侧流体通道，换热板对与换热板对之间形成高压侧流体通道；高压侧进口连接段和高压侧出口连接段分别设于壳体两端，且分别与所述高压侧流体通道的进、出口相连；低压侧进口连接段和低压侧出口连接段分别穿过两个封箱，且分别与所述低压侧流体通道的进、出口相连。本发明还提供了高压紧凑式换热器的工作方法。本发明换热板之间无须扩散焊即可实现高压差流体的换热；装置结构简单，加工制造方便，造价便宜；紧凑度及传热性能均与扩散焊印刷电路板换热器相当。
The invention provides a high-pressure compact heat exchanger. A pair of heat exchange plates stacked in layers is arranged in the shell. The outer sides of the two tube sheets are respectively connected to a box; the inside of the heat exchange plate pair forms a low-pressure side fluid channel, and the heat exchange plate pair forms a high-pressure side fluid channel between the heat exchange plate pairs; the high-pressure side inlet connection section and the high-pressure side The outlet connecting section is respectively arranged at both ends of the casing, and is respectively connected with the inlet and outlet of the fluid channel on the high pressure side; The inlet and outlet of the fluid channel on the low-pressure side are connected. The invention also provides a working method of the high-pressure compact heat exchanger. The invention can realize the heat exchange of the fluid with high pressure difference without diffusion welding between the heat exchange plates; the device has simple structure, convenient processing and manufacturing, and low cost; the compactness and heat transfer performance are equivalent to those of the heat exchanger of the diffusion welding printed circuit board.
Description
技术领域technical field
本发明涉及一种换热器，尤其涉及一种高压紧凑式换热器。The invention relates to a heat exchanger, in particular to a high-pressure compact heat exchanger.
背景技术Background technique
近年来，随着航空航天、舰船、海洋平台、第四代核电、光热发电、分布式能源等行业的发展，对各类紧凑式换热器的需求日益迫切，并还要求换热器满足效率高、耐高温高压、结构紧凑、体积和重量小的设计目标。另外，在一些前沿技术领域，例如：新型的超临界二氧化碳布雷顿动力循环发电装置中，需要高效的气体与气体或气体与超临界流体的换热器，同时，为了控制成本和减小体积，要求采用紧凑式换热器。In recent years, with the development of industries such as aerospace, ships, offshore platforms, fourth-generation nuclear power, photothermal power generation, and distributed energy, the demand for various compact heat exchangers has become increasingly urgent, and heat exchangers are also required Meet the design goals of high efficiency, high temperature and high pressure resistance, compact structure, small volume and weight. In addition, in some cutting-edge technical fields, such as: in the new supercritical carbon dioxide Brayton power cycle power generation device, high-efficiency gas-to-gas or gas-to-supercritical fluid heat exchangers are required. At the same time, in order to control costs and reduce volume, A compact heat exchanger is required.
目前，扩散焊印刷电路板换热器受到广泛关注，其优点是水力直径小(1mm左右)，紧凑度极高(可达2500m2/m3以上)，可承受高温高压，缺点主要有两方面：一是扩散焊制作工艺成本太高，可制作的换热模块尺寸较小；二是选材仅限于少数几种材料牌号，如：304/316奥氏体不锈钢、钛、镍基合金、铜等。此外，扩散焊印刷电路板换热器产品的检验和维护也有诸多不便。如果能够实现免扩散焊的、可承受高温高压的印刷电路板换热器，则对于弥补上述缺点，扩大市场应用范围有重要意义。在各类经典的换热器类型中，管壳式换热器应用广泛、技术成熟。将管壳式换热器与印刷电路板换热器相结合，并采用正压差(壳程压力＞管程压力)，有望实现上述设想，且在行业上未见有相关报道。At present, the diffusion-welded printed circuit board heat exchanger has received widespread attention. Its advantages are small hydraulic diameter (about 1mm), high compactness (up to 2500m 2 /m 3 or more), and can withstand high temperature and high pressure. The disadvantages mainly include two aspects : First, the cost of the diffusion welding process is too high, and the size of the heat exchange module that can be produced is small; second, the selection of materials is limited to a few material grades, such as: 304/316 austenitic stainless steel, titanium, nickel-based alloys, copper, etc. . In addition, the inspection and maintenance of diffusion-welded printed circuit board heat exchanger products are also inconvenient. If a printed circuit board heat exchanger that can withstand high temperature and high pressure without diffusion welding can be realized, it will be of great significance to make up for the above shortcomings and expand the scope of market application. Among all kinds of classic heat exchanger types, shell and tube heat exchangers are widely used and the technology is mature. Combining shell-and-tube heat exchangers with printed circuit board heat exchangers and using positive pressure differences (shell-side pressure > tube-side pressure) is expected to achieve the above assumptions, and there are no relevant reports in the industry.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种如何实现免扩散焊的印刷电路板换热器。The technical problem to be solved by the present invention is to provide a printed circuit board heat exchanger how to realize diffusion-free welding.
为了解决上述技术问题，本发明的技术方案是提供一种高压紧凑式换热器，其特征在于：包括壳体，壳体内布置层层叠合的换热板对，换热板对的两端分别穿过一个管板，两个管板内侧分别与壳体两端相连，两个管板外侧分别与一封箱相连；In order to solve the above technical problems, the technical solution of the present invention is to provide a high-pressure compact heat exchanger, which is characterized in that: it includes a shell, and a pair of heat exchange plates stacked in layers is arranged in the shell, and the two ends of the heat exchange plate pair are respectively Through a tube sheet, the inner sides of the two tube sheets are respectively connected to both ends of the shell, and the outer sides of the two tube sheets are respectively connected to a box;
换热板对内部形成低压侧流体通道，换热板对与换热板对之间形成高压侧流体通道；高压侧进口连接段和高压侧出口连接段分别设于壳体两端，且分别与所述高压侧流体通道的进、出口相连；低压侧进口连接段和低压侧出口连接段分别穿过两个封箱，且分别与所述低压侧流体通道的进、出口相连。A low-pressure side fluid channel is formed inside the heat exchange plate pair, and a high-pressure side fluid channel is formed between the heat exchange plate pair; The inlet and outlet of the fluid channel on the high-pressure side are connected; the inlet connection section on the low-pressure side and the outlet connection section on the low-pressure side respectively pass through two sealed boxes and are respectively connected to the inlet and outlet of the fluid channel on the low-pressure side.
优选地，所述换热板对由两块换热板相互贴合配对、呈镜面对称布置组成；每块换热板的正面和背面均设有间隔设置的槽道和肋，相邻槽道通过肋隔开。Preferably, the pair of heat exchange plates is composed of two heat exchange plates that are attached and paired to each other and arranged symmetrically in a mirror; the front and back of each heat exchange plate are provided with grooves and ribs arranged at intervals, and adjacent grooves separated by ribs.
更优选地，所述换热板每个面上的槽道相互平行。More preferably, the grooves on each surface of the heat exchange plate are parallel to each other.
更优选地，所述换热板上的槽道截面呈圆弧形，双面槽道呈交错布置。More preferably, the cross-section of the channels on the heat exchange plate is arc-shaped, and the channels on both sides are arranged in a staggered manner.
更优选地，所述换热板两面的槽道在换热板的两端过渡段不平行、中间段互相平行。More preferably, the channels on both sides of the heat exchange plate are not parallel at the transition sections at both ends of the heat exchange plate, and the middle sections are parallel to each other.
更优选地，所述换热板对的两块换热板的长边边缘焊接密封，在换热板对内部两块换热板之间形成低压侧流体的通道。More preferably, the long side edges of the two heat exchange plates of the heat exchange plate pair are welded and sealed to form a low pressure side fluid channel between the two heat exchange plates inside the heat exchange plate pair.
优选地，所述壳体为圆筒体。Preferably, the housing is a cylinder.
优选地，所述换热板对以适合壳体内壁尺寸的不同宽度层层叠合，置于壳体内。Preferably, the pair of heat exchange plates are stacked in layers with different widths suitable for the inner wall of the housing, and placed in the housing.
优选地，相邻换热板对之间的缝隙，以及换热板对与管板之间的缝隙均焊接密封。Preferably, gaps between adjacent pairs of heat exchange plates, and gaps between heat exchange plate pairs and tube sheets are welded and sealed.
优选地，所述换热板对上高压侧流体通道的两端形成90°转弯的高压侧进、出口过渡段槽道，高压侧进、出口过渡段槽道延伸至换热板对的侧面，形成高压侧进口和高压侧出口；高压侧进口和高压侧出口分别与所述高压侧进口连接段和高压侧出口连接段连接。Preferably, the two ends of the upper high-pressure side fluid channel of the heat exchange plate pair form a 90°-turned high-pressure side inlet and outlet transition section channel, and the high-pressure side inlet and outlet transition section channel extends to the side of the heat exchange plate pair, A high-pressure side inlet and a high-pressure side outlet are formed; the high-pressure side inlet and the high-pressure side outlet are respectively connected to the high-pressure side inlet connection section and the high-pressure side outlet connection section.
优选地，所述壳体与管板连接处形成高压侧承压边界，管板与封箱连接处形成低压侧承压边界。Preferably, the connection between the shell and the tube sheet forms a pressure-bearing boundary on the high-pressure side, and the connection between the tube-sheet and the sealing box forms a pressure-bearing boundary on the low-pressure side.
优选地，所述换热板采用可通过化学蚀刻加工槽道的各类金属材料制成。Preferably, the heat exchange plate is made of various metal materials that can process channels through chemical etching.
优选地，所述换热板的槽道采用化学蚀刻加工。Preferably, the channels of the heat exchange plate are processed by chemical etching.
更优选地，所述的槽道采用直线或波浪线形式，也可采用不连续结构，形成“S”形或翼形结构的肋。More preferably, the channel is in the form of a straight line or a wavy line, and may also be in a discontinuous structure to form ribs in an "S" shape or an airfoil structure.
本发明还提供了上述的高压紧凑式换热器的使用方法，其特征在于：首先，高压流体从高压侧进口连接段输入至壳体，沿壳程的高压侧流体通道流向高压侧出口连接段；然后，低压流体从低压侧进口连接段输入至壳体，沿板程的低压侧流体通道流向低压侧出口连接段；确保换热板对始终处于正压差作用，使换热板对处于压缩受力状态，从而保持压力边界的完整性，高、低压流体被换热板对隔离；壳体与管板承受高压侧流体的压力；流动过程中，高压侧流体与低压侧流体进行传热；工作结束时，先卸掉低压侧压力，再卸掉高压侧压力，确保换热板对始终处于正压差作用。The present invention also provides a method for using the above-mentioned high-pressure compact heat exchanger, which is characterized in that: firstly, the high-pressure fluid is input from the high-pressure side inlet connection section to the shell, and flows along the high-pressure side fluid channel on the shell side to the high-pressure side outlet connection section ;Then, the low-pressure fluid is input from the low-pressure side inlet connection section to the shell, and flows along the low-pressure side fluid passage of the plate to the low-pressure side outlet connection section; ensure that the heat exchange plate pair is always under a positive pressure difference, so that the heat exchange plate pair is in a compression Stressed state, so as to maintain the integrity of the pressure boundary, the high and low pressure fluids are isolated by the heat exchange plate pair; the shell and the tube sheet bear the pressure of the high pressure side fluid; during the flow process, the high pressure side fluid and the low pressure side fluid conduct heat transfer; At the end of the work, the pressure on the low-pressure side is removed first, and then the pressure on the high-pressure side is removed to ensure that the heat exchange plate pair is always under a positive pressure difference.
优选地，所述流体的流动方向为逆流。Preferably, the flow direction of the fluid is reverse flow.
本发明提供的装置克服了现有技术的不足，换热板之间无须扩散焊即可实现高压差流体的换热；换热板可选用任何可化学蚀刻的金属材料，不受扩散焊工艺的限制；加工制造均采用成熟的、低成本的工艺，造价便宜；紧凑度及传热性能均与扩散焊印刷电路板换热器相当。The device provided by the present invention overcomes the deficiencies of the prior art, and the heat exchange of the high-pressure differential fluid can be realized without diffusion welding between the heat exchange plates; Restrictions; the processing and manufacturing adopt mature and low-cost technology, and the cost is cheap; the compactness and heat transfer performance are equivalent to those of diffusion-welded printed circuit board heat exchangers.
附图说明Description of drawings
图1为本发明换热板结构示意图；(a)正面结构；(b)背面结构；Fig. 1 is a structural schematic diagram of the heat exchange plate of the present invention; (a) front structure; (b) back structure;
图2为本发明换热板对结构示意图；Fig. 2 is a structural schematic diagram of the heat exchange plate pair of the present invention;
图3为本发明换热板对中间段横截面示意图；Fig. 3 is a schematic cross-sectional view of the middle section of the heat exchange plate pair of the present invention;
图4为本发明换热器管板与换热板配合结构示意图；Fig. 4 is a schematic diagram of the cooperation structure of the heat exchanger tube sheet and the heat exchange plate of the present invention;
图5为本发明高压紧凑式换热器的整体结构示意图；Fig. 5 is a schematic diagram of the overall structure of the high-pressure compact heat exchanger of the present invention;
附图标记说明：Explanation of reference signs:
1-换热板，2-槽道，3-肋，4-换热板对，5一换热板对边缘焊缝，6-管板，7-换热板对端部焊缝，8一管板与换热板焊缝，9-壳体，10-高压侧进口连接段，11一高压侧出口连接段，12一封箱，13-低压侧进口连接段，14-低压侧出口连接段。1-heat exchange plate, 2-channel, 3-rib, 4-pair of heat exchange plate, 5-edge weld of heat exchange plate, 6-tube plate, 7-end weld of heat exchange plate, 8- Tube sheet and heat exchange plate weld, 9-shell, 10-high-pressure side inlet connection section, 11-high-pressure side outlet connection section, 12 sealing box, 13-low-pressure side inlet connection section, 14-low-pressure side outlet connection section .
具体实施方式Detailed ways
下面结合具体实施例，进一步阐述本发明。Below in conjunction with specific embodiment, further illustrate the present invention.
图1为换热板结构示意图，所述的换热板1的正面和背面均设有间隔设置的槽道2和肋3。即：相邻肋3之间形成槽道2，相邻槽道2通过肋3隔开。每个面上的槽道2相互平行。两面的槽道2在换热板1的两端过渡段不平行，中间段互相平行。换热板1上的槽道截面呈圆弧形。Fig. 1 is a schematic diagram of the structure of the heat exchange plate. The front and back of the heat exchange plate 1 are provided with channels 2 and ribs 3 arranged at intervals. That is: grooves 2 are formed between adjacent ribs 3 , and adjacent grooves 2 are separated by ribs 3 . The channels 2 on each face are parallel to each other. The channels 2 on both sides are not parallel at the transition sections at both ends of the heat exchange plate 1 , and the middle sections are parallel to each other. The cross section of the channel on the heat exchange plate 1 is arc-shaped.
结合图2，两块换热板1互相贴合，呈镜面对称设置，形成换热板对4。换热板对4的长边通过换热板对边缘焊缝5形成密封边界。在换热板对4内部形成低压侧流体的通道。Referring to FIG. 2 , two heat exchange plates 1 are attached to each other and arranged symmetrically in a mirror surface, forming a heat exchange plate pair 4 . The long sides of the heat exchange plate pair 4 form a sealed boundary through the edge weld seam 5 of the heat exchange plate pair. Channels for the low-pressure side fluid are formed inside the heat exchange plate pair 4 .
结合图3，两组换热板对4叠合时，两组换热板对4在中间段的双面的槽道1呈交错布置。Referring to FIG. 3 , when two sets of heat exchange plate pairs 4 are stacked, the two sets of heat exchange plate pairs 4 are arranged in a staggered arrangement on the double-sided channels 1 in the middle section.
结合图4，换热板对4制作成不同宽度，层层叠合。相邻换热板对4的两端端部形成换热板对端部焊缝7。层层叠合后的换热板对4的两端分别穿过一管板6，换热板对4与管板6之间形成管板与换热板焊缝8。通过换热板对端部焊缝7和管板与换热板焊缝8形成密封边界。在换热板对4与换热板对4之间形成高压侧流体的通道。换热板对4的两端的高压侧进、出口过渡段槽道90°转弯，并在换热板对4的侧面形成高压侧进口和高压侧出口。Referring to FIG. 4 , the heat exchange plate pairs 4 are made into different widths and stacked in layers. Ends of two adjacent heat exchange plate pairs 4 form heat exchange plate pair end welds 7 . Both ends of the laminated heat exchange plate pair 4 pass through a tube plate 6 respectively, and a tube plate-to-heat exchange plate weld 8 is formed between the heat exchange plate pair 4 and the tube plate 6 . A sealing boundary is formed by the plate-to-end weld 7 and the tube-sheet-to-plate weld 8 . A passage for the high pressure side fluid is formed between the heat exchange plate pair 4 and the heat exchange plate pair 4 . The channels of the high-pressure side inlet and outlet transition sections at both ends of the heat exchange plate pair 4 turn at 90°, and form a high-pressure side inlet and a high-pressure side outlet on the side of the heat exchange plate pair 4 .
结合图5，高压紧凑式换热器包括壳体9，壳体9内布置层层叠合的换热板对4，高压侧进口连接段10和高压侧出口连接段11设置在壳体9的两端，分别与换热板对4上的高压侧进口和高压侧出口连接。壳体9两端分别与两端的管板6一侧连接形成高压侧承压边界，两端的管板6另一侧分别与一封箱12连接形成低压侧承压边界，两个封箱12分别与低压侧进口连接段13和低压侧出口连接段14连接。Referring to Fig. 5 , the high-pressure compact heat exchanger includes a shell 9, in which a pair of stacked heat exchange plates 4 are arranged, and the high-pressure side inlet connecting section 10 and the high-pressure side outlet connecting section 11 are arranged on both sides of the shell 9. The ends are respectively connected to the high-pressure side inlet and high-pressure side outlet on the heat exchange plate pair 4. The two ends of the shell 9 are respectively connected to one side of the tube sheet 6 at both ends to form a pressure-bearing boundary on the high-pressure side, and the other sides of the tube sheet 6 at both ends are connected to a box 12 to form a pressure-bearing boundary on the low-pressure side, respectively. It is connected with the inlet connection section 13 of the low pressure side and the outlet connection section 14 of the low pressure side.
上述高压紧凑式换热器的工作方法如下：The above high pressure compact heat exchanger works as follows:
首先，高压流体从高压侧进口连接段10输入至壳体9，沿壳程流向高压侧出口连接段11；然后，低压流体从低压侧进口连接段13输入，沿板程流向低压侧出口连接段14；确保换热板对4始终处于正压差作用，使换热板对4处于压缩受力状态，可保持压力边界的完整性，两侧的流体被换热板对4隔离；壳体9与管板6承受高压侧流体的压力；流动过程中高压侧与低压侧流体通过换热板1进行传热；工作结束时，先卸掉低压侧压力，再卸掉高压侧压力，确保换热板对4始终处于正压差作用。First, the high-pressure fluid is input from the high-pressure side inlet connection section 10 to the shell 9, and flows along the shell side to the high-pressure side outlet connection section 11; then, the low-pressure fluid is input from the low-pressure side inlet connection section 13, and flows along the plate side to the low-pressure side outlet connection section 14. Ensure that the heat exchange plate pair 4 is always under a positive pressure difference, so that the heat exchange plate pair 4 is in a state of compression and force, which can maintain the integrity of the pressure boundary, and the fluid on both sides is isolated by the heat exchange plate pair 4; the shell 9 The tube sheet 6 bears the pressure of the fluid on the high pressure side; during the flow process, the fluid on the high pressure side and the low pressure side pass through the heat exchange plate 1 for heat transfer; when the work is over, first remove the pressure on the low pressure side, and then remove the pressure on the high pressure side to ensure heat exchange Plate pair 4 is always under positive differential pressure.
以上所述，仅为本发明的较佳实施例，并非对本发明任何形式上和实质上的限制，应当指出，对于本技术领域的普通技术人员，在不脱离本发明方法的前提下，还将可以做出若干改进和补充，这些改进和补充也应视为本发明的保护范围。凡熟悉本专业的技术人员，在不脱离本发明的精神和范围的情况下，当可利用以上所揭示的技术内容而做出的些许更动、修饰与演变的等同变化，均为本发明的等效实施例；同时，凡依据本发明的实质技术对上述实施例所作的任何等同变化的更动、修饰与演变，均仍属于本发明的技术方案的范围内。The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form and in essence. Several improvements and supplements can be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. Those who are familiar with this profession, without departing from the spirit and scope of the present invention, when they can use the technical content disclosed above to make some changes, modifications and equivalent changes of evolution, are all included in the present invention. Equivalent embodiments; at the same time, all changes, modifications and evolutions of any equivalent changes made to the above-mentioned embodiments according to the substantive technology of the present invention still belong to the scope of the technical solution of the present invention.
Claims (10)
- A kind of 1. high pressure compact heat exchanger, it is characterised in that：The heat exchange overlapped layer by layer is arranged including housing (9), in housing (9) For plate to (4), heat exchanger plates are each passed through the both ends of (4) tube sheet (6), on the inside of two tube sheets (6) respectively with housing (9) both ends It is connected, is connected respectively with a joint sealing (12) on the outside of two tube sheets (6)；Heat exchanger plates are internally formed (4) low-pressure side fluid passage, and heat exchanger plates are to (4) and heat exchanger plates to forming high-pressure side between (4) Fluid passage；High pressure side-entrance linkage section (10) and high pressure side outlet linkage section (11) are respectively arranged on housing (9) both ends, and respectively It is connected with the import and export of the high-pressure side fluid passage；Low pressure side-entrance linkage section (13) and low side outlets linkage section (14) Two joint sealings (12) are each passed through, and the import and export with the low-pressure side fluid passage is connected respectively.
- A kind of 2. high pressure compact heat exchanger as claimed in claim 1, it is characterised in that：The heat exchanger plates are to (4) by two pieces Heat exchanger plates (1) are bonded to each other pairing, are arranged symmetrically composition in minute surface；The front and back of every piece of heat exchanger plates (1) is equipped with interval The conduit (2) and rib (3) of setting, adjacent conduit (2) are separated by rib (3).
- A kind of 3. high pressure compact heat exchanger as claimed in claim 2, it is characterised in that：On each face of the heat exchanger plates (1) Conduit (2) be parallel to each other.
- A kind of 4. high pressure compact heat exchanger as claimed in claim 3, it is characterised in that：The groove on heat exchanger plates (1) two sides Road (2) heat exchanger plates (1) both ends changeover portion is not parallel, interlude is parallel to each other.
- A kind of 5. high pressure compact heat exchanger as claimed in claim 2, it is characterised in that：Two pieces to (4) of the heat exchanger plates The long side edge welded seal of heat exchanger plates (1), in heat exchanger plates to forming low pressure side liquid between (4) internal two pieces of heat exchanger plates (1) Passage.
- A kind of 6. high pressure compact heat exchanger as claimed in claim 1, it is characterised in that：The heat exchanger plates are to (4) with suitable The different in width of housing (9) inner wall size overlaps layer by layer, is placed in housing (9).
- A kind of 7. high pressure compact heat exchanger as claimed in claim 1, it is characterised in that：Adjacent heat exchanger plates are between (4) Gap, and heat exchanger plates are to the equal welded seal in gap between (4) and tube sheet (6).
- A kind of 8. high pressure compact heat exchanger as claimed in claim 1, it is characterised in that：The heat exchanger plates are to high pressure on (4) The high-pressure side import and export changeover portion conduit of the both ends shape turning in 90 ° of side liquid passage, high-pressure side import and export changeover portion conduit Side of the heat exchanger plates to (4) is extended to, forms high pressure side-entrance and high pressure side outlet；High pressure side-entrance and high pressure side outlet difference It is connected with the high pressure side-entrance linkage section (10) and high pressure side outlet linkage section (11).
- A kind of 9. high pressure compact heat exchanger as claimed in claim 1, it is characterised in that：The housing (9) connects with tube sheet (6) The place of connecing forms high-pressure side pressure-bearing boundary, and tube sheet (6) forms low-pressure side pressure-bearing boundary with joint sealing (12) junction.
- It is 10. a kind of such as the application method of claim 1~9 any one of them high pressure compact heat exchanger, it is characterised in that：It is first First, high-pressure fluid is inputted to housing (9) from high pressure side-entrance linkage section (10), and high pressure is flowed to along the high-pressure side fluid passage of shell side Side outlet linkage section (11)；Then, low-pressure fluid is inputted to housing (9) from low pressure side-entrance linkage section (13), along the low of plate journey Pressure side liquid passage flows to low side outlets linkage section (13)；Ensure that heat exchanger plates act on (4) in positive differential pressure all the time, make heat exchange Plate is in (4) compression stress, so as to keep the integrality of pressure boundary, high and low pressure fluid by heat exchanger plates to (4) every From；Housing (9) bears the pressure of high pressure side liquid with tube sheet (6)；In flow process, high pressure side liquid is carried out with low pressure side liquid Heat transfer；At the end of work, low-pressure lateral pressure is first laid down, then lay down high side pressure, it is ensured that heat exchanger plates are in positive pressure all the time to (4) Difference effect.
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| CN112272444A (en) * | 2020-10-25 | 2021-01-26 | 西安热工研究院有限公司 | Printed circuit board heat exchanger core for reducing stress |
| CN112665424A (en) * | 2020-12-28 | 2021-04-16 | 中国长江三峡集团有限公司 | Corrosion-resistant printed circuit board heat exchanger for gas-liquid heat exchange and coating process |
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| CN107966055B (en) | 2024-02-02 |
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