CN106440480A - High-temperature generator for lithium bromide cold and warm water unit and pipe expanding method - Google Patents

High-temperature generator for lithium bromide cold and warm water unit and pipe expanding method Download PDF

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Publication number
CN106440480A
CN106440480A CN201611141266.3A CN201611141266A CN106440480A CN 106440480 A CN106440480 A CN 106440480A CN 201611141266 A CN201611141266 A CN 201611141266A CN 106440480 A CN106440480 A CN 106440480A
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CN
China
Prior art keywords
heat exchanger
tube
titanium
exchanger tube
temperature generator
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201611141266.3A
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Chinese (zh)
Inventor
张跃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YUAN AIR CONDITIONERS CO Ltd
Original Assignee
YUAN AIR CONDITIONERS CO Ltd
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 YUAN AIR CONDITIONERS CO Ltd filed Critical YUAN AIR CONDITIONERS CO Ltd
Priority to CN201611141266.3A priority Critical patent/CN106440480A/en
Publication of CN106440480A publication Critical patent/CN106440480A/en
Priority to JP2019530004A priority patent/JP6785969B2/en
Priority to PCT/CN2017/114416 priority patent/WO2018107989A1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/02Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/02Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081Heat exchange elements made from metals or metal alloys
    • F28F21/086Heat exchange elements made from metals or metal alloys from titanium or titanium alloys

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention provides a high-temperature generator for a lithium bromide cold and warm water unit and a pipe expanding method. The high-temperature generator comprises pipe plates and heat exchanging pipes, and the heat exchanging pipes are inserted into holes of the pipe plates. The heat exchanging pipes are the titanium heat exchanging pipes, and the insides of the holes of the pipe plates and/or the outsides of the pipe ends of the titanium heat exchanging pipes are coated with silicone oil. The invention further provides the pipe expanding method of the high-temperature generator for the lithium bromide cold and warm water unit. According to the high-temperature generator for the lithium bromide cold and warm water unit and the pipe expanding method, on the one hand, by adopting the titanium heat exchanging pipes and compared with copper heat exchanging pipes, the quantity of utilized materials can be reduced by more than 70%; and on the other hand, the degree of difficulty of pipe expanding can be lowered, and airtightness is greatly improved.

Description

A kind of lithium bromide cold and hot water machine group high-temperature generator and expansion tube method
Technical field
The present invention relates to technical field of heat exchange, particularly a kind of lithium bromide cold and hot water machine group high-temperature generator and tube expansion side Method.
Background technology
The lithium bromide cold and hot water machine group of cellular-type high-temperature generator heat supply, is separated with high-temperature generator with main body when heating Feature, due to high-temperature generator mechanical moving component, when main body is inoperative, abrasion can be reduced.Big through more than 20 years Amount user actual motion checking:Fault rate decline 70%, radiation loss reduce 60%, it is to avoid fouling when vaporizer is heated and affect system Cold.One times of life longer.
Heat exchanger tube traditional method in high-temperature generator adopts copper heat exchanger tube, although heat conductivity height, but lacks with following Point:1)Copper hardness is low, not sherardizing steel and abrasion;2)Copper easily produces oxide layer, and easily fouling, and life-time service causes Heat-transfer capability declines;3)The corrosion of copper not resistant to ammonia, sulfide and acidic materials.
Improve afterwards, copper heat exchanger tube is replaced using stainless steel heat exchange tube, although hardness and corrosion resistance are improved, but are had Following shortcoming:1)A large amount of chloride ion corrosions for existing during rustless steel is not water-fast, so as to cause the problems such as spot corrosion, stress corrosion;2) Rustless steel coefficient of thermal expansion is higher than as the 50% of high-temperature generator carbon steel sheel, causes carbon steel sheel and heat exchanger tube in work When expansion differ, produce larger stress, and then cause to damage;3)Rustless steel can produce underdeposit corrosion in the case of incrusted (A kind of oxygen differential concentration corrosion).
In order to solve the above problems, in prior art, stainless steel heat exchange tube be replaced using titanium heat exchanger tube, achieve good Effect, but, as titanium is a kind of high material of coefficient of elasticity, its yield strength with fracture strength closely, if tube expansion Strength deficiency, material can produce resilience, if tube expansion strength is excessive, may ftracture, so as to be difficult to hold the tube expansion of titanium heat exchanger tube Dynamics.
Content of the invention
The purpose of the present invention is to overcome the above-mentioned not enough of prior art and provide a kind of good airproof performance, material-saving, corrosion resistant Erosion, the little lithium bromide cold and hot water machine group high-temperature generator of tube expansion degree-of-difficulty factor and expansion tube method.
The technical scheme is that:
A kind of lithium bromide cold and hot water machine group high-temperature generator of the present invention, including tube sheet and heat exchanger tube, the heat exchanger tube insertion The in the hole of tube sheet;The heat exchanger tube is titanium heat exchanger tube, is coated with silicon on the outside of the pipe end of the in the hole of the tube sheet and/or titanium heat exchanger tube Oil.
The present invention passes through to apply silicone oil, even if tube expansion strength is not enough, titanium heat exchanger tube between the hole of titanium exchanger tubes and tubesheets Resilience is produced, between the hole of titanium exchanger tubes and tubesheets, will not also produce gap.In addition, silicone oil can be high temperature resistant, in long-term work Under will not volatilization loss, ensure that sealing, improve service life.
Further, the silicone oil is dimethicone.
Further, the heat exchanger tube inserts the expanded joint part of tube expander.
Further, the applied thickness of the silicone oil is not more than 0.1mm.So, silicone oil, reduces cost, and energy had both been saved Sealing is improved, if applied thickness is excessive, tube expansion dynamics can be caused to be affectedly bashful improper, easily be affected by silicone oil, for example can Cause tube expansion dynamics deficiency, but now silicone oil thickness is big, still ensure that sealing, but once permanent worker in high temperature environments Make, silicone oil can be caused to volatilize, and the tube expansion dynamics deficiency due to early stage, sealing between titanium exchanger tubes and tubesheets can be caused poor.
Further, the material of the titanium heat exchanger tube is pure titanium or titanium alloy.
A kind of expansion tube method according to the aforementioned lithium bromide cold and hot water machine group high-temperature generator of the present invention, including with Lower step:
Step 1:Before tube expansion is carried out to titanium heat exchanger tube, first it is coated with the outside of the in the hole of tube sheet and/or the pipe end of titanium heat exchanger tube Silicone oil, used as sealant;
Step 2:Titanium heat exchanger tube is inserted the in the hole of tube sheet, tube expansion is carried out to titanium heat exchanger tube so that the titanium heat exchanger tube at hole Fasten with tube sheet after dilating, sticked between the hole of titanium exchanger tubes and tubesheets by silicone oil, realize auxiliary seal.
Beneficial effects of the present invention:
(1)By selecting titanium heat exchanger tube, it is not necessary to which reserved corrosion allowance, thickness can be reduced to the 1/2 of copper pipe, and the density of titanium Only copper 1/2 or so, therefore, material usage more than 70% can be reduced than copper heat exchanger tube using titanium heat exchanger tube;
(2)By being coated with silicone oil on the outside of the pipe end of the in the hole of tube sheet and/or titanium heat exchanger tube, even if the titanium heat exchanger tube bullet of itself Property coefficient height, will not also reduce sealing, and then the degree-of-difficulty factor of reduction tube expansion, greatly improve sealing.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation that the embodiment of the present invention 1 applies dimethicone.
Specific embodiment
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Embodiment 1
As depicted in figs. 1 and 2:A kind of lithium bromide cold and hot water machine group high-temperature generator, including tube sheet 2 and heat exchanger tube, heat exchanger tube In the hole 21 of insertion tube sheet 2;Heat exchanger tube is titanium heat exchanger tube 1, is coated with dimethicone 3, diformazan on the outside of the pipe end of titanium heat exchanger tube 1 The applied thickness of base silicone oil 3 is 0.05mm.The material of titanium heat exchanger tube 1 is pure titanium.
The present embodiment is using titanium heat exchanger tube 1 with advantages below:(1)Titanium is without any corrosion under use environment, prolonged Durable;(2)The coefficient of thermal expansion of titanium differs less than 10% with carbon steel as high-temperature generator housing, and housing and heat exchanger tube are in work Expand unanimously, without stress damage hidden danger when making;(3)Titanium intensity is close to rustless steel and its surface oxide layer is extremely firm, uses Under the conditions of without erosion corrosion and abrasion;(4)The oxide layer on titanium surface will not increase thickness, be not easy to fouling, and life-time service is passed Heat energy power is difficult to decline;(5)Lightweight, improve the lightweight of heater.
Due to above reason, titanium heat exchanger tube 1 need not reserve corrosion allowance, and thickness can be reduced to the 1/2 of copper pipe, and titanium Density be only copper 1/2 or so, therefore, material usage more than 70% can be reduced than copper heat exchanger tube using titanium heat exchanger tube 1.
The expansion tube method of the present embodiment specifically includes following steps:
Step 1:Before tube expansion being carried out to titanium heat exchanger tube 1, first apply dimethicone 3 on the outside of the pipe end of titanium heat exchanger tube 1, as Sealant;
Step 2:Titanium heat exchanger tube 1 is inserted in the hole 21 of tube sheet 2, the expanded joint part of the end insertion tube expander 4 of titanium heat exchanger tube 1, Tube expansion is carried out to titanium heat exchanger tube 1 by tube expander 4 so that the titanium heat exchanger tube 1 at hole 21 is fastened with tube sheet 2 after dilating, lead to Cross dimethicone 3 to stick between titanium heat exchanger tube 1 and the hole 21 of tube sheet 2, realize auxiliary seal.
Why the present embodiment selects dimethicone 3, is because that dimethicone has advantages below:(1)Viscosity height, Stick in the gap between titanium heat exchanger tube and tubesheet holes, play auxiliary seal effect;(2)Dimethicone is a kind of inert substance, Not corroding metal chemical reaction is not produced with lithium-bromide solution yet;(3)Dimethicone is nontoxic, harmless to operator;(4)Diformazan The boiling point of base silicone oil more than 300 DEG C, working condition for a long time will not volatilization loss, long working life.
By selecting applied thickness for the dimethicone 3 of 0.05mm, very thin one layer due to applying, tube expansion can either be caused Dynamics is easier to be affectedly bashful, and can improve sealing again.
Embodiment 2
Difference with embodiment 1 is, dimethicone is coated in the in the hole of tube sheet, and applied thickness is 0.1mm.
The other the same as in Example 1.
Embodiment 3
Difference with embodiment 1 is, dimethicone had both been coated in the in the hole of tube sheet, was also coated in outside the pipe end of titanium heat exchanger tube Side, is 0.02mm in the applied thickness of tube sheet in the hole, and the applied thickness on the outside of the pipe end of titanium heat exchanger tube is 0.08mm.
The other the same as in Example 1.

Claims (6)

1. a kind of lithium bromide cold and hot water machine group high-temperature generator, including tube sheet and heat exchanger tube, the heat exchanger tube insertion tube sheet In the hole;Characterized in that, the heat exchanger tube is to apply titanium heat exchanger tube, on the outside of the pipe end of the in the hole of the tube sheet and/or titanium heat exchanger tube It is covered with silicone oil.
2. lithium bromide cold and hot water machine group high-temperature generator according to claim 1, it is characterised in that the silicone oil be Base silicone oil.
3. lithium bromide cold and hot water machine group high-temperature generator according to claim 1 or claim 2, it is characterised in that the heat exchanger tube The expanded joint part of insertion tube expander.
4. lithium bromide cold and hot water machine group high-temperature generator according to claim 1 or claim 2, it is characterised in that the silicone oil Applied thickness is not more than 0.1mm.
5. lithium bromide cold and hot water machine group high-temperature generator according to claim 1 or claim 2, it is characterised in that the titanium heat exchange The material of pipe is pure titanium or titanium alloy.
6. the expansion tube method of one kind lithium bromide cold and hot water machine group high-temperature generator according to any one of claim 1 ~ 5, its It is characterised by, comprises the following steps:
Step 1:Before tube expansion is carried out to titanium heat exchanger tube, first it is coated with the outside of the in the hole of tube sheet and/or the pipe end of titanium heat exchanger tube Silicone oil, used as sealant;
Step 2:Titanium heat exchanger tube is inserted the in the hole of tube sheet, tube expansion is carried out to titanium heat exchanger tube so that the titanium heat exchanger tube at hole Fasten with tube sheet after dilating, sticked between the hole of titanium exchanger tubes and tubesheets by silicone oil, realize auxiliary seal.
CN201611141266.3A 2016-12-12 2016-12-12 High-temperature generator for lithium bromide cold and warm water unit and pipe expanding method Pending CN106440480A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201611141266.3A CN106440480A (en) 2016-12-12 2016-12-12 High-temperature generator for lithium bromide cold and warm water unit and pipe expanding method
JP2019530004A JP6785969B2 (en) 2016-12-12 2017-12-04 Lithium bromide cold / hot water / heat pump unit
PCT/CN2017/114416 WO2018107989A1 (en) 2016-12-12 2017-12-04 Lithium bromide chiller-heater / heat pump unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611141266.3A CN106440480A (en) 2016-12-12 2016-12-12 High-temperature generator for lithium bromide cold and warm water unit and pipe expanding method

Publications (1)

Publication Number Publication Date
CN106440480A true CN106440480A (en) 2017-02-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018107989A1 (en) * 2016-12-12 2018-06-21 远大空调有限公司 Lithium bromide chiller-heater / heat pump unit
CN108507222A (en) * 2017-02-28 2018-09-07 远大空调有限公司 A kind of lithium bromide cold and hot water/heat pump unit
CN108507221A (en) * 2017-02-28 2018-09-07 远大空调有限公司 A kind of lithium bromide cold and hot water/heat pump unit using full Ti-heat exchanger
CN110595103A (en) * 2019-10-30 2019-12-20 远大空调有限公司 High-temperature generator tube plate structure for lithium bromide cold-warm water unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201013966Y (en) * 2006-10-11 2008-01-30 汪小虎 Water temperature regulation valve core used for constant temperature water valves
JP2009103434A (en) * 2007-10-01 2009-05-14 Sumitomo Light Metal Ind Ltd Aluminum heat exchanger
CN101954566A (en) * 2010-05-19 2011-01-26 张家港市恒强冷却设备有限公司 Process for fixedly connecting titanium cooling tube in cooler and radiating fins and titanium tube plate
CN103252400A (en) * 2012-02-17 2013-08-21 珠海格力电器股份有限公司 Method for expanding and sealing tube plate and tube
CN103386207A (en) * 2013-07-22 2013-11-13 天津长芦汉沽盐场有限责任公司 Potassium chloride triple-effect evaporation system capable of improving heat energy utilization rate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201013966Y (en) * 2006-10-11 2008-01-30 汪小虎 Water temperature regulation valve core used for constant temperature water valves
JP2009103434A (en) * 2007-10-01 2009-05-14 Sumitomo Light Metal Ind Ltd Aluminum heat exchanger
CN101954566A (en) * 2010-05-19 2011-01-26 张家港市恒强冷却设备有限公司 Process for fixedly connecting titanium cooling tube in cooler and radiating fins and titanium tube plate
CN103252400A (en) * 2012-02-17 2013-08-21 珠海格力电器股份有限公司 Method for expanding and sealing tube plate and tube
CN103386207A (en) * 2013-07-22 2013-11-13 天津长芦汉沽盐场有限责任公司 Potassium chloride triple-effect evaporation system capable of improving heat energy utilization rate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018107989A1 (en) * 2016-12-12 2018-06-21 远大空调有限公司 Lithium bromide chiller-heater / heat pump unit
CN108507222A (en) * 2017-02-28 2018-09-07 远大空调有限公司 A kind of lithium bromide cold and hot water/heat pump unit
CN108507221A (en) * 2017-02-28 2018-09-07 远大空调有限公司 A kind of lithium bromide cold and hot water/heat pump unit using full Ti-heat exchanger
CN110595103A (en) * 2019-10-30 2019-12-20 远大空调有限公司 High-temperature generator tube plate structure for lithium bromide cold-warm water unit
CN110595103B (en) * 2019-10-30 2021-08-31 远大空调有限公司 High-temperature generator tube plate structure for lithium bromide cold-warm water unit

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