WO2016029571A1 - 耐腐蚀热泵型卧式套管换热器 - Google Patents

耐腐蚀热泵型卧式套管换热器 Download PDF

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Publication number
WO2016029571A1
WO2016029571A1 PCT/CN2014/091764 CN2014091764W WO2016029571A1 WO 2016029571 A1 WO2016029571 A1 WO 2016029571A1 CN 2014091764 W CN2014091764 W CN 2014091764W WO 2016029571 A1 WO2016029571 A1 WO 2016029571A1
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Prior art keywords
tube
outer sleeve
tube sheet
pipe
corrosion
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PCT/CN2014/091764
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English (en)
French (fr)
Inventor
陈顺龙
王勇
鲁一
卢开兰
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泰州市沪江特种设备有限公司
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Priority claimed from CN201420491653.XU external-priority patent/CN204064076U/zh
Priority claimed from CN201410431531.6A external-priority patent/CN104949560A/zh
Application filed by 泰州市沪江特种设备有限公司 filed Critical 泰州市沪江特种设备有限公司
Publication of WO2016029571A1 publication Critical patent/WO2016029571A1/zh

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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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically

Definitions

  • the invention relates to a heat pump refrigeration system, and more particularly to a novel corrosion-resistant heat pump type horizontal casing heat exchanger.
  • the horizontal shell-and-tube heat exchanger has unique structural features: simple processing technology, convenient heat exchange tube cleaning, mature corrosion-resistant heat exchange tubes, liquid storage energy, etc., and thus widely used in various refrigeration systems.
  • due to its structure it cannot solve the oil return problem when it is used as a heat pump system. Therefore, it can only be used as a condenser in a single-cooling refrigeration system; a heat pump refrigeration system can use a dry evaporation (condensation) device, and its structure Similar to the structure of the horizontal shell-and-tube evaporator, the difference is that the refrigerant in the dry evaporation (condensation) flows in the heat exchange tubes, and the cooling medium flows outside the heat exchange tubes.
  • the utility model has the advantages that the refrigerant charging amount is small, the heat exchange tube is prevented from being cracked due to freezing, and the oil return problem is solved, and is widely used in various heat pump refrigeration systems, and the disadvantage is that the processing technology is complicated. It is difficult to clean the outside of the heat exchange tube. It is difficult to change the anti-corrosion treatment of the inside of the shell and the outside of the heat exchange tube. Therefore, the extensive useability of the heat transfer tube is also restricted.
  • the heat pump refrigeration system can also use the casing heat exchanger. High thermal efficiency, simple structure, oil return, etc., but due to its structure, it is troublesome to repair, clean and disassemble. Long-term operation will cause the equipment to be blocked by scale, which will reduce efficiency, increase energy consumption and shorten life. . At present, there is no corrosion-resistant heat pump type horizontal casing heat exchanger at home and abroad.
  • the present invention provides a novel corrosion-resistant heat pump type horizontal casing heat exchanger, whose unique structure and performance fully meet the requirements, and is very suitable for a heat pump system with corrosive cooling medium. use.
  • Corrosion-resistant heat pump type horizontal casing heat exchanger adopts a horizontal structure, which is composed of an anti-corrosion block, a cover head, an outer casing tube plate, a composite pipe and a pipe plate from left to right, and the cover head includes a cover head I and the cover head II, the anti-corrosion block is fixedly connected with the cover head I, the tube sheet comprises a tube sheet I and a tube sheet II, the cover head I is connected with the tube sheet I, and the outer sleeve tube sheet comprises a jacket a tube sheet I and an outer tube tube sheet II, the tube sheet I is connected to the outer tube tube sheet I, and the outer sleeve tube sheet II is connected to the tube sheet II, the tube sheet II Connected to the cover head II, one side of the upper end of the outer sleeve tube sheet is provided with a refrigerant inlet, one side of the lower end is provided with a refrigerant outlet, and the cover head II is provided with a cooling medium inlet
  • a pair of feet are provided below the outer casing tube sheet.
  • the utility model adopts a plurality of concentric composite pipes (outer casing + inner heat exchange pipe) adopting a linear parallel dense arrangement, and a passage for a refrigerant circulation between the outer casing and the inner heat exchange tube, the outer casing
  • the compartment on the tube plate forms a plurality of sealed refrigerant circulation processes
  • the inner heat exchange tube is sealingly connected to the tube sheet (composite) through the outer tube tube plate, and forms a plurality of channels for the cooling medium with the compartment of the cap.
  • the refrigerant enters the compartment on the outer casing tube plate through the cooling inlet (refrigeration) at the upper end of the outer casing tube, and then flows in the annular gap between the outer casing and the inner heat exchange tube, and the internal heat exchange is carried out during the flow process.
  • the tube transfers heat to the cooling medium, the refrigerant is cooled and condensed, and the refrigerant condensed into a liquid state flows out from the refrigeration outlet (refrigeration) at the lower end of the outer casing tube plate, and acts as a condenser at this time;
  • the refrigerant enters the compartment on the outer casing tube plate through the cooling inlet (heat pump) at the lower end of the outer casing tube plate, and then flows in the annular gap between the outer casing and the inner heat exchange tube, and the internal flow is changed during the flow process.
  • the heat pipe absorbs heat in the cooling medium, the refrigerant is heated and evaporated, and the refrigerant evaporated into a vapor state flows out from the refrigeration outlet (heat pump) at the upper end of the outer casing tube, and acts as an evaporator at this time;
  • the cooling medium always flows in the inner heat exchange tube, and heat is transferred between the cooling medium and the refrigerant through the inner tube wall.
  • the advantages of the invention are as follows: (a) convenient cleaning in the heat exchange tube; (b) the refrigerant flows in the annular gap, and the inner heat exchange tube adopts a high-efficiency outer spiral multi-head twist tube or an outer spiral ribbed high-efficiency heat transfer tube, which greatly The heat exchange efficiency outside the tube is improved; (c) no dead angle of oil storage ensures the oil return of the system; the structural characteristics of the casing heat exchanger are maintained, and the structural advantages of the horizontal shell-and-tube heat exchanger are also obtained. Its horizontal casing form and excellent corrosion resistance make it a new type of corrosion-resistant heat pump type horizontal casing heat exchanger. Its unique structural properties are more suitable for heat pumps in various environments around the world. Used in refrigeration systems.
  • FIG. 1 is a schematic view showing the appearance and structure of a corrosion-resistant heat pump type horizontal casing heat exchanger
  • Figure 2 is a working principle diagram of a corrosion-resistant heat pump type horizontal casing heat exchanger
  • Figure 3 is a cross-sectional view of a corrosion-resistant heat pump type horizontal casing heat exchanger
  • the present invention provides a novel corrosion-resistant heat pump type horizontal casing heat exchanger, which adopts a horizontal installation method, and comprises an anti-corrosion block 1, a cover head, an outer casing tube plate, a composite pipe, and a tube plate.
  • the cover head comprises a cover head I2 and a cover head II10.
  • the anti-corrosion block 1 is fixedly connected with the cover head I2.
  • the tube plate comprises a tube plate I3 and a tube plate II9, and the cover head I2 is connected with the tube plate I3.
  • the outer casing tube plate comprises an outer casing tube plate I4 and an outer casing tube plate II7, the tube plate I3 is connected with the outer casing tube plate I4, and the outer casing tube plate II7 is connected with the tube plate II9, The tube plate II9 is connected to the cover head II10.
  • the inside of the composite pipe comprises an outer sleeve 5 and an inner heat exchange tube 6, the outer sleeve 5 is sealingly connected with the outer sleeve tube plate, and the inner heat exchange tube 6 and the outer sleeve 5 are concentric casing.
  • a pair of feet 13 are provided below the outer casing tube sheet.
  • the inner heat exchange tube of the invention is an outer spiral multi-head twisted tube or an outer spiral ribbed high-efficiency heat transfer tube.
  • it can be processed with iron, aluminum, brass, copper and other pipes; for sea water or corrosive cooling medium, It can be processed with aluminum brass, B10 white copper, B30 white copper, stainless steel, titanium metal and other pipes.
  • the cover head of the invention can be processed by using materials such as iron, aluminum and brass for fresh water or ordinary cooling medium; for seawater or corrosive cooling medium, it can be processed by materials such as aluminum bronze, B10 white copper, B30 white copper, stainless steel and titanium metal.
  • the outer sleeve is a seamless steel tube.
  • the inner heat exchange tube is processed by copper, B10 white copper, and B30 white copper tube.
  • the outer casing tube sheet is made of a steel sheet.
  • the tube sheet (composite) sheets I and II are composited with a steel sheet or a material resistant to seawater and corrosive cooling medium.
  • the anti-corrosion block material of the invention is selected according to seawater or corrosive medium, and is allowed to corrode and protect the cover head, the tube sheet and the heat exchange tube in advance.
  • This case is a new type of corrosion-resistant heat pump type horizontal casing heat exchanger.
  • the key technologies mentioned above are effective in the similar situation.
  • the size and heat exchange capacity of the present invention are not specified in this case.
  • the horizontal casing heat exchanger can be designed into various sizes and heat exchange sizes as needed.

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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

一种耐腐蚀热泵型卧式套管换热器，安装方式采用卧式结构，包括防腐块（１）、盖头、外套管管板、复合管、管板，盖头包括盖头Ⅰ（２）和盖头Ⅱ（１０），防腐块（１）与盖头Ⅰ（２）固定连接，管板包括管板Ⅰ（３）和管板Ⅱ（９），盖头Ⅰ（２）与管板Ⅰ（３）连接，外套管管板包括外套管管板Ⅰ（４）和外套管管板Ⅱ（７），管板Ⅰ（３）与外套管管板Ⅰ（４）连接，外套管管板Ⅱ（７）与管板Ⅱ（９）连接，复合管的内部包括外套管（５）和内换热管（６），内换热管（６）和外套管（５）为同心套管。该换热器的换热管内清洗方便，提高了管外侧的换热效率，无贮油死角。

Description

耐腐蚀热泵型卧式套管换热器 技术领域
本发明涉及的是一种热泵制冷***，更确切的说是涉及一种新型的耐腐蚀热泵型卧式套管换热器。
背景技术
卧式壳管式换热器具有独特的结构特点：加工工艺比较简单、换热管清洗方便，成熟的抗腐蚀换热管,具有贮液能等，因而广泛地在各种制冷***中使用，但由于其结构的原因在作为热泵***使用时无法解决回油问题，因此目前只能在单冷型的制冷***中作为冷凝器使用；热泵制冷***可使用干式蒸发(冷凝)器，其结构与卧式管壳式蒸发器的结构相似，所不同的是干式蒸发(冷凝)器中制冷剂在换热管内流动，而冷却介质在换热管外流动。其具有制冷剂充注量小，避免了换热管由于冻结而胀裂的现象、解决了回油问题的优点，在各类热泵制冷***中被广泛应用，其缺点是：加工工艺比较复杂、换热管外清洗比较困难，加之壳体内侧与换热管外侧换冷却介质流腔抗腐蚀处理较难，因此其广泛使用性也受到制约；热泵制冷***亦可使用套管换热器，传热效能高，结构简单，可回油等优点，但由于其结构的原因在检修、清洗和拆卸都较麻烦，长期运行会导致设备被水垢堵塞，将会使效率降低、能耗增加、寿命缩短。目前国内外均无一种耐腐蚀热泵型卧式套管换热器。
发明内容
本发明为解决上述不足之处，提供了一种新型的耐腐蚀热泵型卧式套管换热器，其独特的结构和性能完全达到要求，非常适合在有腐蚀性的冷却介质的热泵***中使用。
为了达到上述要求和目的，本发明所采用的技术方案如下：
一种耐腐蚀热泵型卧式套管换热器，安装方式采用卧式结构，从左到右依次由防腐块、盖头、外套管管板、复合管、管板组成，所述的盖头包括盖头Ⅰ和盖头Ⅱ，所述的防腐块与盖头Ⅰ固定连接，所述的管板包括管板Ⅰ和管板Ⅱ，所述的盖头Ⅰ与管板Ⅰ连接，所述的外套管管板包括外套管管板Ⅰ和外套管管板Ⅱ，所述的管板Ⅰ与外套管管板Ⅰ连接，所述的外套管管板Ⅱ与管板Ⅱ连接，所述的管板Ⅱ 与盖头Ⅱ连接，所述外套管管板的上端的一侧设有一制冷剂进口，下端的一侧设有制冷剂出口，所述盖头Ⅱ上设有冷却介质进口和冷却介质出口，所述复合管的内部包括外套管和内换热管，所述的外套管与外套管管板密封连接，所述的内换热管和外套管为同心套管。
作为优先的实施例，所述的外套管管板的下方设有一对底脚。
本发明的原理如下：本实用新型采用多根同心复合管(外套管+内换热管)采用直线平行密布式的布置，外套管与内换热管之间构成制冷剂循环的通道，外套管管板上的隔腔形成多个密封的制冷剂循环流程；内换热管穿过外套管管板与管板(复合)密封连接，与盖头的隔腔形成多个冷却介质的通道。
制冷运行时制冷剂通过外套管管板上端的制冷进口(制冷)进入外套管管板上的隔腔再在外套管和内换热管间环形间隙内流动，这一流动过程中通过内换热管将热量传递给冷却介质，制冷剂得到降温冷凝，冷凝成液态的制冷剂从外套管管板下端的制冷出口(制冷)流出，此时作用为冷凝器；
制热运行时制冷剂通过外套管管板下端的制冷进口(热泵)进入外套管管板上的隔腔再在外套管和内换热管间环形间隙内流动，这一流动过程中通过内换热管吸收冷却介质中的热量，制冷剂得到升温蒸发，蒸发成汽态的制冷剂从外套管管板上端的制冷出口(热泵)流出，此时作用为蒸发器；
而冷却介质始终在内换热管中流动，热量通过内管管壁实现冷却介质和制冷剂间的传递。
本发明的优点如下：(a)换热管内清洗方便；(b)制冷剂在环形间隙内流动，内换热管采用高效的外螺旋多头麻花管或外螺旋肋化的高效传热管，大大提高了管外侧的换热效率；(c)无贮油死角，保证了***的回油；保持了套管换热器的结构特点，也具有了其卧式壳管式换热器的结构优势；其卧式套管的形式，优良的抗腐蚀性，使其成为一种新型的耐腐蚀热泵型卧式套管换热器，其结构性能的独特性更为适合在全球各种环境的热泵制冷***中使用。
附图说明
附图1为耐腐蚀热泵型卧式套管换热器外形及结构示意图；
附图2为耐腐蚀热泵型卧式套管换热器的工作原理图；
附图3为耐腐蚀热泵型卧式套管换热器的剖面图；
其中：1、防腐块；2、盖头Ⅰ；3、管板Ⅰ；4、外套管管板Ⅰ；5、外套管；6、内换热管；7、外套管管板Ⅱ；8、制冷剂进口；9、管板Ⅱ；10、盖头Ⅱ；11、冷却介质进口；12、冷却介质出口；13、底脚；14、制冷剂出口。
具体实施方法
以下结合附图对本发明作进一步描述。
如图1所示，本发明提供了一种新型的耐腐蚀热泵型卧式套管换热器，采用卧式的安装方式，由防腐块1、盖头、外套管管板、复合管、管板组成，所述的盖头包括盖头Ⅰ2和盖头Ⅱ10，所述的防腐块1与盖头Ⅰ2固定连接，所述的管板包括管板Ⅰ3和管板Ⅱ9，所述的盖头Ⅰ2与管板Ⅰ3连接，所述的外套管管板包括外套管管板Ⅰ4和外套管管板Ⅱ7，所述的管板Ⅰ3与外套管管板Ⅰ4连接，所述的外套管管板Ⅱ7与管板Ⅱ9连接，所述的管板Ⅱ9与盖头Ⅱ10连接，所述外套管管板的上端的一侧设有一制冷剂进口8，下端的一侧设有制冷剂出口14，所述盖头Ⅱ10上设有冷却介质进口11和冷却介质出口12，所述复合管的内部包括外套管5和内换热管6，所述的外套管5与外套管管板密封连接，所述的内换热管6和外套管5为同心套管。
作为优先的实施例，所述的外套管管板的下方设有一对底脚13。
本发明内换热管为外螺旋多头麻花管或外螺旋肋化的高效传热管，对于淡水或普通冷却介质可用铁、铝、黄铜、紫铜等管材加工；对于海水或腐蚀性冷却介质、可用铝黄铜、B10白铜、B30白铜、不锈钢、钛金属等管材加工。
本发明盖头对于淡水或普通冷却介质，可用铁、铝、黄铜等材料浇铸加工；对于海水或腐蚀性冷却介质、可用铝青铜、B10白铜、B30白铜、不锈钢、钛金属等材料加工。
作为优选实施例，所述的外套管采用无缝钢管。
作为优选实施例，所述的内换热管采用紫铜、B10白铜、B30白铜管加工。
作为优选实施例，所述的外套管管板用钢板制作。
作为优选实施例，所述的管板(复合)板Ⅰ和Ⅱ用钢板或抗海水及腐蚀性冷却介质腐蚀的材料复合而成。
本发明防腐块材料根据海水或腐蚀性介质选择，让其先期腐蚀保护盖头、管板、换热管。
本案为一种新型的耐腐蚀热泵型卧式套管换热器，上述所涉及到的关键技术在类似情况处实施均有效用；本案未规定尺寸及换热量大小，本发明耐腐蚀热泵型卧式套管换热器可根据需要设计成各种尺寸大小、换热量大小的器件。

Claims (2)

  1. 一种耐腐蚀热泵型卧式套管换热器，安装方式采用卧式结构，包括防腐块(1)、盖头、外套管管板、复合管、管板，所述的盖头包括盖头Ⅰ(2)和盖头Ⅱ(10)，所述的防腐块(1)与盖头Ⅰ(2)固定连接，所述的管板包括管板Ⅰ(3)和管板Ⅱ(9)，所述的盖头Ⅰ(2)与管板Ⅰ(3)连接，所述的外套管管板包括外套管管板Ⅰ(4)和外套管管板Ⅱ(7)，所述的管板Ⅰ(3)与外套管管板Ⅰ(4)连接，所述的外套管管板Ⅱ(7)与管板Ⅱ(9)连接，所述的管板Ⅱ(9)与盖头Ⅱ(10)连接，所述外套管管板的上端的一侧设有一制冷剂进口(8)，下端的一侧设有制冷剂出口(14)，所述盖头Ⅱ(10)上设有冷却介质进口(11)和冷却介质出口(12)，所述复合管的内部包括外套管(5)和内换热管(6)，所述的外套管(5)与外套管管板密封连接，所述的内换热管(6)和外套管(5)为同心套管。
  2. 根据权利要求1所述的耐腐蚀热泵型卧式套管换热器，其特征在于：所述的外套管管板的下方设有一对底脚(13)。
PCT/CN2014/091764 2014-08-27 2014-11-20 耐腐蚀热泵型卧式套管换热器 WO2016029571A1 (zh)

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Application Number Priority Date Filing Date Title
CN201420491653.XU CN204064076U (zh) 2014-08-27 2014-08-27 耐腐蚀热泵型卧式套管换热器
CN201410431531.6A CN104949560A (zh) 2014-08-27 2014-08-27 耐腐蚀热泵型卧式套管换热器
CN201420491653.X 2014-08-27
CN201410431531.6 2014-08-27

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Publication number Priority date Publication date Assignee Title
CN107084632A (zh) * 2017-03-30 2017-08-22 中粮粮油工业（荆州）有限公司 一种浸出毛油余热利用装置
CN109579604A (zh) * 2019-01-02 2019-04-05 广西玉柴机器股份有限公司 热交换设备防腐介质安装结构
CN115069188A (zh) * 2022-07-07 2022-09-20 上海滩泰科技有限公司 一种乙二醇酯化的预反应器

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CN115069188A (zh) * 2022-07-07 2022-09-20 上海滩泰科技有限公司 一种乙二醇酯化的预反应器

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