WO2021012936A1 - Échangeur de chaleur à plaques doté de circuit à plaques de division d'écoulement - Google Patents

Échangeur de chaleur à plaques doté de circuit à plaques de division d'écoulement Download PDF

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Publication number
WO2021012936A1
WO2021012936A1 PCT/CN2020/100316 CN2020100316W WO2021012936A1 WO 2021012936 A1 WO2021012936 A1 WO 2021012936A1 CN 2020100316 W CN2020100316 W CN 2020100316W WO 2021012936 A1 WO2021012936 A1 WO 2021012936A1
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WO
WIPO (PCT)
Prior art keywords
heat exchange
plate
auxiliary
inlet
exchange module
Prior art date
Application number
PCT/CN2020/100316
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English (en)
Chinese (zh)
Inventor
李永堂
Original Assignee
李永堂
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李永堂 filed Critical 李永堂
Publication of WO2021012936A1 publication Critical patent/WO2021012936A1/fr

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates

Definitions

  • the invention relates to a plate heat exchange device, which is mainly applied to heat exchange devices with steam (especially oil-containing steam) on the plate side, such as a condensing device, an evaporation device and a fluid heating device.
  • a plate heat exchange device which is mainly applied to heat exchange devices with steam (especially oil-containing steam) on the plate side, such as a condensing device, an evaporation device and a fluid heating device.
  • the public number is The Chinese patent application of CN104132557A relates to "an intermediate drainage type high-efficiency condensation system. It implements intermediate drainage at the end of the front-stage heat exchanger. This measure accelerates the discharge of the liquid film, thereby increasing the heat transfer coefficient. And effective The utilization rate of the heat exchange surface of the heat exchanger is improved, and the front-stage heat exchanger is always in a high-efficiency heat exchange state. After use, it is found that although the intermediate drainage measure can have a certain effect in improving the heat exchange efficiency, it is due to its The method is to lead the condensate out of the heat exchanger, and this part of the extraction medium is generally a gas-liquid mixed phase, which still stores high heat energy. On the one hand, it will reduce the utilization rate of heat energy, and on the other hand, it will increase the operating load of the refrigeration system. .
  • the technical problem to be solved by the present invention is to provide a plate-side split-flow plate heat exchanger, in which part of the liquid phase of the plate-side fluid, including oil, is concentrated and converged through an inlet header and then introduced into a separate auxiliary plate. Accelerate the discharge of liquid phase, greatly reduce the content of liquid phase and oil passing through the main heat exchange fins, thereby improving the overall heat exchange efficiency of the device.
  • the plate-pass split-flow plate heat exchanger includes a shell and two or more heat exchange modules installed in the shell and arranged up and down.
  • the heat exchange module includes several main heat exchange plates installed in parallel and a certain number of auxiliary heat exchanges. Plate, the medium inlet of the heat exchange plate is equipped with an inlet header, and the medium outlet is equipped with an outlet header.
  • the inlet header is connected to the main heat exchange plate through the main plate inlet pipe, and enters through the auxiliary plate.
  • the tube is connected to the auxiliary heat exchange plate; the outlet header of the previous heat exchange module is connected to the inlet header of the next heat exchange module through the connecting pipe, which is characterized in that the number of auxiliary heat exchange plates in the uppermost heat exchange module is n1, the number of auxiliary heat exchange plates in the next layer of heat exchange module is n2, and the number of auxiliary heat exchange plates in the next layer of heat exchange module is n3, and so on, n1, n2, n3 represent natural numbers, and The number of auxiliary heat exchange plates in at least one layer of heat exchange module is not zero; in the heat exchange module with auxiliary heat exchange plates, the connection point between the main plate inlet pipe and the inlet header is higher than the auxiliary plate The connection point between the inlet pipe and the inlet header.
  • the number of auxiliary heat exchange plates in each heat exchange module from top to bottom gradually increases.
  • connection point between the main plate inlet pipe and the inlet header is located in the middle of the height direction of the inlet header, and the connection point between the auxiliary plate inlet pipe and the inlet header is located on the bottom side of the inlet header .
  • the auxiliary heat exchange plates in each heat exchange module are installed on the same side of the heat exchanger.
  • the present invention utilizes the confluence and gas-liquid separation functions of the inlet header. Most of the gas phase (steam) flows through the main heat exchange plates, and most of the liquid phase (including oil) enters the auxiliary heat exchange plates. Due to the effect of confluence, the flow of the liquid phase is accelerated, thereby increasing the thermal conductivity of the liquid phase, and increasing the discharge speed of the liquid phase, thereby improving the overall heat exchange efficiency. As the liquid phase and oil content (oil film) in the main heat exchange plate are significantly reduced, the heat exchange effect is significantly improved. In the case of achieving equivalent heat exchange, the use of the present invention can greatly reduce the specifications of the heat exchanger, thereby greatly reducing the manufacturing, operation and maintenance costs of the heat exchange device, and reducing the area of the heat exchange device.
  • next module is provided with more auxiliary heat exchange plates than the previous module.
  • This design ensures that during the top-down heat exchange process of the plate side fluid, the gradually increasing liquid phase output can be split in time, ensuring that the heat exchanger always operates in a balanced manner and obtaining a more optimized heat exchange effect.
  • the auxiliary heat exchange plates of the present invention have a small number and are installed on the same side of the heat exchanger, making it easier to disassemble and remove oil, and the large amount of oil storage of the main heat exchange plates is effectively controlled, which prolongs the maintenance cycle of the whole machine.
  • Fig. 1 is a schematic diagram of the structure and working principle of an embodiment of the present invention.
  • Figure 1 only one main heat exchange plate and one auxiliary heat exchange plate are shown in each module due to the shielding relationship.
  • FIG. 2 is a schematic structural diagram from another perspective of the embodiment of the present invention. Compared with FIG. 1, FIG. 2 is a left-side schematic diagram.
  • the housing is omitted in both figures.
  • this embodiment includes a shell and a three-layer heat exchange module installed in the shell.
  • Each heat exchange module includes several main heat exchange plates 4 and at least one auxiliary heat exchange plate 5 installed in parallel.
  • the medium inlet of the heat exchange plates is equipped with an inlet header, and the medium outlet is equipped with an outlet. Header.
  • the inlet header is connected to the main heat exchange plate through the main plate inlet pipe 3, and is connected to the auxiliary heat exchange plate through the auxiliary plate inlet pipe 15.
  • the main heat exchange plate is connected to the outlet header through the main plate outlet pipe 6 and the auxiliary heat exchange plate is connected to the outlet header through the auxiliary plate outlet pipe 16 respectively.
  • Different heat exchange modules can be installed in the same shell or in different shells.
  • the side-by-side installation means that the bottom ends are flush and parallel to each other.
  • all main heat exchange plates have the same height
  • all auxiliary heat exchange plates have the same height and are equal to or lower than the main heat exchange plates.
  • the preferred solution is that the auxiliary heat exchange plates are lower than the main heat exchange plates. .
  • the upper inlet header 2 of the upper heat exchange module is connected to the main inlet pipe 1, and the upper outlet header 7 of the upper heat exchange module is connected to the middle inlet header 9 of the middle heat exchange module through the first connecting pipe 8.
  • the middle outlet header 14 of the middle heat exchange module is connected to the lower inlet header 12 of the lower heat exchange module through the second connecting pipe 13, and the lower outlet header 10 of the lower heat exchange module is connected to the main outlet pipe 11.
  • Figure 2 is only a schematic diagram of the structure. In actual production, the number of main heat exchange plates is much larger than that of auxiliary heat exchange plates.
  • connection point between the main plate inlet pipe 3 and the inlet header is higher than the connection point between the auxiliary plate inlet pipe 15 and the inlet header, and the auxiliary plate
  • the connection point between the inlet pipe 15 and the inlet header is higher than the connection point between the auxiliary plate inlet pipe 15 and the auxiliary heat exchange plate.
  • the connection point between the main plate inlet pipe 3 and the inlet header is located in the middle of the height direction of the inlet header, and the connection point between the auxiliary plate inlet pipe 15 and the inlet header is located at the center of the inlet header. Bottom side.
  • the above is an optimized embodiment of the present invention. It meets the requirement of increasing the number of auxiliary heat exchange plates in each heat exchange module from top to bottom (that is, it conforms to n3>n2>n1).
  • Other specific technical solutions that meet this requirement are for example: among several heat exchange modules arranged up and down, the top layer has no auxiliary heat exchange plates, and other layers have auxiliary heat exchange plates.
  • An example of the general technical solution of the present invention among several heat exchange modules arranged up and down, only the middle layer has auxiliary heat exchange plates, and the upper and lower layers do not have them.
  • the auxiliary heat exchange plates are generally installed on the same side of the heat exchange module, close to the same side of the heat exchanger shell, so that only the auxiliary heat exchange plates can be replaced or degreasing cleaning.
  • the plate mentioned in the present invention is composed of two identical metal plates, and a medium channel is formed between the two metal plates.

Landscapes

  • 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

La présente invention concerne un échangeur de chaleur à plaques doté d'un circuit à plaques de division d'écoulement. L'échangeur de chaleur comprend une enveloppe et au moins deux modules d'échange de chaleur disposés verticalement dans l'enveloppe. Le nombre de plaques d'échange de chaleur auxiliaires dans le module d'échange de chaleur le plus haut est égal à n1, le nombre de plaques d'échange de chaleur auxiliaires dans le module d'échange de chaleur suivant est égal à n2, le nombre de plaques d'échange de chaleur auxiliaires dans le module d'échange de chaleur suivant est égal à n3, et ainsi de suite, où n1, n2 et n3 sont des nombres naturels, et au moins un module d'échange de chaleur comporte un nombre non nul de plaques d'échange de chaleur auxiliaires à son intérieur. Dans chaque module d'échange de chaleur muni d'une plaque d'échange de chaleur auxiliaire, le point de raccordement entre un tuyau d'entrée de plaque principale et un tuyau de collecte d'extrémité d'entrée est plus haut que le point de raccordement entre un tuyau d'entrée de plaque auxiliaire et le tuyau de collecte d'extrémité d'entrée. Une partie des substances en phase liquide, y compris de l'huile, dans les fluides du circuit à plaques est concentrée et converge au moyen du tuyau de collecte d'extrémité d'entrée, et est ensuite introduite dans une plaque auxiliaire séparée afin d'accélérer l'évacuation des substances en phase liquide, ce qui permet de réduire considérablement la quantité de substances en phase liquide et d'huile passant à travers les ailettes d'échange de chaleur de l'unité principale, et d'améliorer l'efficacité globale d'échange de chaleur du dispositif.
PCT/CN2020/100316 2019-07-23 2020-07-06 Échangeur de chaleur à plaques doté de circuit à plaques de division d'écoulement WO2021012936A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910665956.6A CN110260694A (zh) 2019-07-23 2019-07-23 板程分流式板式换热器
CN201910665956.6 2019-07-23

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WO2021012936A1 true WO2021012936A1 (fr) 2021-01-28

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CN (1) CN110260694A (fr)
WO (1) WO2021012936A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110260694A (zh) * 2019-07-23 2019-09-20 李永堂 板程分流式板式换热器
CN114992917B (zh) * 2022-05-19 2023-08-15 广东工业大学 以co2为工质的工质干度及过冷度可控的板壳式换热器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155189A (en) * 1979-05-18 1980-12-03 Babcock Hitachi Kk Heat exchanger with inclined header
CN1975311A (zh) * 2006-09-22 2007-06-06 清华大学 分液式空气冷凝器
CN101025340A (zh) * 2007-03-30 2007-08-29 清华大学 多级冷却中间分液式空气冷凝器
CN201867086U (zh) * 2010-10-23 2011-06-15 山东早春创尔沃热泵技术有限公司 气液分离式空冷冷凝器
CN104132557A (zh) * 2014-07-30 2014-11-05 烟台珈群高效节能设备有限公司 中间排液式高效冷凝系统
CN203964693U (zh) * 2014-07-30 2014-11-26 烟台珈群高效节能设备有限公司 高效冷凝装置
CN105716440A (zh) * 2015-12-18 2016-06-29 广东工业大学 一种具有气液分离功能的板式冷凝器
CN110260694A (zh) * 2019-07-23 2019-09-20 李永堂 板程分流式板式换热器
CN210268320U (zh) * 2019-07-23 2020-04-07 李永堂 板程分流式板式换热器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101504256B (zh) * 2009-03-05 2012-05-23 清华大学 一种立式冷凝器的汽液分离方法及冷凝器
CN103528407A (zh) * 2013-11-01 2014-01-22 烟台珈群高效节能设备有限公司 全焊接板式插接换热器
CN204910850U (zh) * 2015-09-14 2015-12-30 李永堂 不凝性气体高效分离真空冷凝系统
CN205748016U (zh) * 2015-12-18 2016-11-30 广东工业大学 气液分离板式冷凝器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155189A (en) * 1979-05-18 1980-12-03 Babcock Hitachi Kk Heat exchanger with inclined header
CN1975311A (zh) * 2006-09-22 2007-06-06 清华大学 分液式空气冷凝器
CN101025340A (zh) * 2007-03-30 2007-08-29 清华大学 多级冷却中间分液式空气冷凝器
CN201867086U (zh) * 2010-10-23 2011-06-15 山东早春创尔沃热泵技术有限公司 气液分离式空冷冷凝器
CN104132557A (zh) * 2014-07-30 2014-11-05 烟台珈群高效节能设备有限公司 中间排液式高效冷凝系统
CN203964693U (zh) * 2014-07-30 2014-11-26 烟台珈群高效节能设备有限公司 高效冷凝装置
CN105716440A (zh) * 2015-12-18 2016-06-29 广东工业大学 一种具有气液分离功能的板式冷凝器
CN110260694A (zh) * 2019-07-23 2019-09-20 李永堂 板程分流式板式换热器
CN210268320U (zh) * 2019-07-23 2020-04-07 李永堂 板程分流式板式换热器

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