WO2021184944A1 - Structure de raccordement d'accessoires de tuyauterie - Google Patents

Structure de raccordement d'accessoires de tuyauterie Download PDF

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Publication number
WO2021184944A1
WO2021184944A1 PCT/CN2021/072378 CN2021072378W WO2021184944A1 WO 2021184944 A1 WO2021184944 A1 WO 2021184944A1 CN 2021072378 W CN2021072378 W CN 2021072378W WO 2021184944 A1 WO2021184944 A1 WO 2021184944A1
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WO
WIPO (PCT)
Prior art keywords
copper sleeve
main body
connecting portion
connection structure
structure according
Prior art date
Application number
PCT/CN2021/072378
Other languages
English (en)
Chinese (zh)
Inventor
王文杰
单宇宽
Original Assignee
浙江盾安人工环境股份有限公司
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 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to JP2022551260A priority Critical patent/JP2023517506A/ja
Priority to KR1020227033674A priority patent/KR20220143135A/ko
Publication of WO2021184944A1 publication Critical patent/WO2021184944A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/007—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints specially adapted for joining pipes of dissimilar materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints

Definitions

  • This application relates to the field of refrigeration technology, and in particular to a pipe connection structure.
  • copper pipes are generally used as connecting pipes to connect two parts.
  • the parts are also made of copper materials. Due to the high price of copper materials, in order to reduce production costs, many companies use Stainless steel materials replace copper materials to make some parts.
  • copper pipes and stainless steel pipes of stainless steel parts need to be welded together, but the welding characteristics of copper materials and stainless steel materials are very different, so the process of directly welding copper pipes and stainless steel pipes together is relatively difficult.
  • a pipe connection structure is provided.
  • the present application provides a pipe connection structure, including a stainless steel pipe and a copper sleeve.
  • the stainless steel pipe includes a main body and a connecting portion provided at one end of the main body.
  • the outer diameter of the connecting portion is smaller than the outer diameter of the main body.
  • the copper sleeve is sleeved outside the connecting portion, and the outer diameter of the copper sleeve is less than or equal to the outer diameter of the main body.
  • the pipe fitting connection structure provided in this application facilitates the connection between the stainless steel pipe and the equipment pipeline by sheathing a copper sleeve on the outside of the connecting part of the stainless steel pipe and connecting the equipment pipeline through the copper sleeve; because the outer diameter of the copper sleeve is less than or equal to The outer diameter of the main body part of the stainless steel pipe, therefore, there is no need to change the piping design of the equipment piping when the equipment piping is connected through the copper sleeve, thereby reducing the cost.
  • the connecting portion and the copper sleeve are connected by welding. Therefore, the connection strength of welding can be improved, and the structure can be stabilized.
  • a welding ring is used for welding between the connecting portion and the copper sleeve, and the welding ring is provided at an end of the connecting portion close to the main body portion. Since the solder ring has a ring-shaped structure and the solder is evenly distributed, a good soldering can be formed between the connecting part and the copper sleeve.
  • the welding ring is a copper-based welding ring. Therefore, the welding process of the copper sleeve and the connecting portion is easier and the welding strength is greater.
  • a clearance fit between the connecting portion and the copper sleeve, and a solder filling layer is filled between the connecting portion and the copper sleeve. Therefore, a clearance fit is adopted between the connecting portion and the copper sleeve, which facilitates the solder to penetrate into the gap during soldering to form a solder filling layer, thereby improving the soldering firmness between the two.
  • the distance between the connecting portion and the copper sleeve is less than or equal to 0.06 mm. Therefore, sufficient soldering strength is ensured, and waste of solder can be avoided.
  • the end of the copper sleeve away from the main body portion protrudes from the end of the connecting portion away from the main body portion. Therefore, flow welding can be prevented.
  • the length of the portion of the copper sleeve protruding from the connecting portion is less than or equal to 3 mm. Therefore, the materials required for manufacturing the copper sleeve can be effectively saved, and the cost can be reduced.
  • the end of the copper sleeve close to the main body portion is provided with rounded corners. Therefore, the rounded corner prevents the copper sleeve and the connecting portion from generating burrs during the assembly process.
  • the stainless steel tube is further provided with a transition portion, the transition portion is provided between the main body portion and the connecting portion, and the transition portion has a tapered tube shape. Therefore, the transition portion makes the connection between the main body and the connecting portion smoother, and increases the connection strength between the main body and the connecting portion.
  • a limiting protrusion is provided on the outer side of the copper sleeve, and the limiting protrusion is used to limit the depth of the copper sleeve inserted into the equipment pipeline. Therefore, the depth at which the copper sleeve is inserted into the equipment pipeline can be easily determined, so that the assembly process can be simplified.
  • FIG. 1 is a schematic structural diagram of a pipe connection structure after welding according to an embodiment of the application.
  • Fig. 2 is a schematic structural diagram of a pipe connection structure before welding according to an embodiment of the application.
  • FIG. 1 is a schematic structural diagram of a pipe connection structure 100 after welding according to an embodiment of the application.
  • the pipe connection structure 100 provided in the present application is used to connect the equipment pipeline 5 and includes a stainless steel pipe 1 and a copper sleeve 2.
  • the stainless steel pipe 1 includes a main body portion 11 and a connecting portion 12 provided at one end of the main body portion 11.
  • the outer diameter of the connecting portion 12 is smaller than the outer diameter of the main body portion 11.
  • the copper sleeve 2 is sleeved on the outside of the connecting portion 12, and the outer diameter of the copper sleeve 2 is less than or equal to the outer diameter of the main body 11.
  • the copper sleeve 2 is sheathed outside the connecting portion 12 of the stainless steel pipe 1, and the equipment pipeline 5 is connected through the copper sleeve 2, which facilitates the connection between the stainless steel pipe 1 and the equipment pipeline 5. connect. Since the outer diameter of the copper sleeve 2 is less than or equal to the outer diameter of the main body 11 of the stainless steel pipe 1, there is no need to change the piping design of the equipment piping 5 when the equipment piping 5 is connected through the copper sleeve 2, that is, there is no need to change the piping design of the equipment piping 5 The pipe diameter of the equipment pipeline 5 may be connected to the copper sleeve 2 without reducing the diameter, which is convenient for operation and can reduce the cost.
  • the connecting portion 12 and the copper sleeve 2 are connected by welding.
  • the connection part 12 and the copper sleeve 2 are connected by welding, the connection strength is high, and the structure is stable.
  • FIG. 2 is a schematic structural view of the pipe connection structure 100 before welding according to an embodiment of the application, and the connection part 12 and the copper sleeve 2 are welded by a welding ring 3.
  • the welding ring 3 is provided at one end of the connecting portion 12 close to the main body portion 11.
  • Using the welding ring 3 to perform welding is to perform welding by means of brazing in a furnace. Before welding, the welding ring 3 is first fixed on the outside of the connecting portion 12, and then the pipe connecting structure 100 is sent into the brazing furnace for brazing.
  • the method of brazing in the furnace is simple in operation and inexpensive.
  • the connecting portion 12 and the copper sleeve 2 are both tubular structures, a welding ring 3 is added to the welding part of the connecting portion 12 and the copper sleeve 2, so that the welding ring 3 can evenly penetrate into the connecting portion 12 and the copper sleeve 2 after melting. Therefore, the connecting portion 12 and the copper sleeve 2 form a good welding strength.
  • the welding ring 3 is a copper-based welding ring. It can be understood that, due to the low melting point, good fluidity and high mechanical strength of the copper-based solder, the use of the copper-based solder ring makes the welding process of the copper sleeve 2 and the connecting portion 12 easier and stronger.
  • FIG. 1 there is a clearance fit between the connecting portion 12 and the copper sleeve 2, and the solder filling layer 4 is filled between the connecting portion 12 and the copper sleeve 2.
  • a clearance fit is adopted between the connecting portion 12 and the copper sleeve 2, that is, there is a gap between the connecting portion 12 and the copper sleeve 2, so as to facilitate the penetration of solder into the gap.
  • a filler layer 4 of solder is filled between the connecting portion 12 and the copper sleeve 2.
  • the liquid solder formed after the solder ring 3 is melted can penetrate into the gap between the connecting portion 12 and the copper sleeve 2 to form the solder filling layer 4.
  • a filler layer 4 of solder is filled between the connecting portion 12 and the copper sleeve 2.
  • the distance between the connecting portion 12 and the copper sleeve 2 is less than or equal to 0.06 mm. It can be understood that if the distance between the connecting portion 12 and the copper sleeve 2 is greater than 0.06 mm, more solder is required for filling between the connecting portion 12 and the copper sleeve 2, resulting in a waste of solder. If the solder is not sufficiently filled, it is likely to occur Insufficient welding. In this embodiment, the distance between the connecting portion 12 and the copper sleeve 2 is less than or equal to 0.06 mm, so that the solder can penetrate into the gap between the connecting portion 12 and the copper sleeve 2, and sufficient welding strength is ensured.
  • the end of the copper sleeve 2 away from the main body portion 11 protrudes from the end of the connecting portion 12 away from the main body portion 11.
  • the portion of the copper sleeve 2 protruding from the connecting portion 12 can provide a stacking space for solder, thereby effectively preventing flow soldering.
  • the length of the portion of the copper sleeve 2 protruding from the connecting portion 12 is less than or equal to 3 mm, so that sufficient space for the solder to accumulate is provided. It can be understood that if the length of the portion of the copper sleeve 2 protruding from the connecting portion 12 exceeds 3 mm, it will cause a waste of solder accumulation space, thereby causing a waste of material of the copper sleeve 2.
  • the end of the copper sleeve 2 close to the main body 11 is provided with a rounded corner 21.
  • the rounded corner 21 makes the end of the copper sleeve 2 smoother.
  • the copper sleeve 2 is inserted into the outside of the connecting portion 12 from one end of the connecting portion 12. Since the end of the copper sleeve 2 close to the main body 11 is provided with rounded corners 21, the outer surface of the connecting portion 12 will not be scratched during the process of inserting the copper sleeve 2, thereby avoiding burrs during the assembly process.
  • the stainless steel pipe 1 is further provided with a transition portion 13, which is provided between the main body portion 11 and the connection portion 12.
  • One end of the transition portion 13 is connected to the main body portion 11, and the other end Connected to the connecting portion 12, the transition portion 13 has a tapered tube shape.
  • the outer diameter of the transition portion 13 gradually decreases from the end connected to the main body 11 to the end connected to the connecting portion 12, so that the connection between the main body 11 and the connecting portion 12 is smoother, and the main body 11 and the connecting portion are increased. 12. Connection strength.
  • a limiting protrusion 22 is provided on the outer side of the copper sleeve 2, and the limiting protrusion 22 is used to limit the depth of the copper sleeve 2 inserted into the equipment pipeline 5.
  • the limit protrusion 22 is provided, the depth of the copper sleeve 2 inserted into the equipment pipeline 5 can be easily determined, thereby simplifying the assembly process.
  • the end surface of one end of the equipment pipeline 5 abuts against the limiting protrusion 22.
  • a limiting groove can also be provided in the inner wall of the equipment pipeline 5 to pass The limit protrusion 22 cooperates with the limit groove to limit the position.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

L'invention concerne une structure de raccordement d'accessoires de tuyauterie (100), destinée à être utilisée dans des canalisations de dispositif de raccordement (5). La structure de raccordement d'accessoires de tuyauterie (100) comprend un tuyau en acier inoxydable (1) et un manchon en cuivre (2), le tuyau en acier inoxydable (1) comprend une partie corps (11) et une partie de raccordement (12) disposée à une extrémité de la partie corps (11), et le diamètre externe de la partie de raccordement (12) est inférieur à celui de la partie corps (11). Le manchon de cuivre (2) est disposé à l'extérieur de la partie de raccordement (12) et le diamètre externe du manchon de cuivre (2) est inférieur ou égal à celui de la partie corps (11).
PCT/CN2021/072378 2020-03-18 2021-01-18 Structure de raccordement d'accessoires de tuyauterie WO2021184944A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022551260A JP2023517506A (ja) 2020-03-18 2021-01-18 継手接続構造
KR1020227033674A KR20220143135A (ko) 2020-03-18 2021-01-18 파이프 부재 연결 구조

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202020341501.7U CN212361095U (zh) 2020-03-18 2020-03-18 管件连接结构
CN202020341501.7 2020-03-18

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WO2021184944A1 true WO2021184944A1 (fr) 2021-09-23

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PCT/CN2021/072378 WO2021184944A1 (fr) 2020-03-18 2021-01-18 Structure de raccordement d'accessoires de tuyauterie

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JP (1) JP2023517506A (fr)
KR (1) KR20220143135A (fr)
CN (1) CN212361095U (fr)
WO (1) WO2021184944A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212361095U (zh) * 2020-03-18 2021-01-15 浙江盾安人工环境股份有限公司 管件连接结构

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014104933A1 (de) * 2014-04-08 2015-06-18 Miele & Cie. Kg Verfahren zur Herstellung einer Verbindung von Rohren sowie Rohrverbindung erstellt nach dem Verfahren
CN204913089U (zh) * 2015-08-28 2015-12-30 何珠华 管件焊接结构
CN205781506U (zh) * 2016-07-20 2016-12-07 浙江三花股份有限公司 一种四通换向阀接管、四通换向阀及冷媒循环系统
CN106917924A (zh) * 2015-12-28 2017-07-04 浙江盾安人工环境股份有限公司 一种管口接口结构和消音器
CN110605493A (zh) * 2019-09-24 2019-12-24 苏州悦贸金属制品有限公司 不锈钢管与铜管的焊接方法
CN211925062U (zh) * 2020-03-25 2020-11-13 广东恒基金属制品实业有限公司 一种不锈钢管与铜管的焊接结构
CN212361095U (zh) * 2020-03-18 2021-01-15 浙江盾安人工环境股份有限公司 管件连接结构
CN212362521U (zh) * 2020-02-25 2021-01-15 盾安（芜湖）中元自控有限公司 管口连接结构、储液器筒体及储液器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014104933A1 (de) * 2014-04-08 2015-06-18 Miele & Cie. Kg Verfahren zur Herstellung einer Verbindung von Rohren sowie Rohrverbindung erstellt nach dem Verfahren
CN204913089U (zh) * 2015-08-28 2015-12-30 何珠华 管件焊接结构
CN106917924A (zh) * 2015-12-28 2017-07-04 浙江盾安人工环境股份有限公司 一种管口接口结构和消音器
CN205781506U (zh) * 2016-07-20 2016-12-07 浙江三花股份有限公司 一种四通换向阀接管、四通换向阀及冷媒循环系统
CN110605493A (zh) * 2019-09-24 2019-12-24 苏州悦贸金属制品有限公司 不锈钢管与铜管的焊接方法
CN212362521U (zh) * 2020-02-25 2021-01-15 盾安（芜湖）中元自控有限公司 管口连接结构、储液器筒体及储液器
CN212361095U (zh) * 2020-03-18 2021-01-15 浙江盾安人工环境股份有限公司 管件连接结构
CN211925062U (zh) * 2020-03-25 2020-11-13 广东恒基金属制品实业有限公司 一种不锈钢管与铜管的焊接结构

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Publication number Publication date
KR20220143135A (ko) 2022-10-24
JP2023517506A (ja) 2023-04-26
CN212361095U (zh) 2021-01-15

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