CN111069869B - Manufacturing process of heat exchanger quick connector with good sealing performance - Google Patents
Manufacturing process of heat exchanger quick connector with good sealing performance Download PDFInfo
- Publication number
- CN111069869B CN111069869B CN202010034071.9A CN202010034071A CN111069869B CN 111069869 B CN111069869 B CN 111069869B CN 202010034071 A CN202010034071 A CN 202010034071A CN 111069869 B CN111069869 B CN 111069869B
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- pipe
- machine
- flaring
- flaring machine
- bent pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/09—Heat pipes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a manufacturing process of a heat exchanger quick connector with good sealing performance, firstly, welding one end of each of the two thread sleeves to the two ends of the bent pipe respectively through a spot welding machine, then clamping the sealing ring into a gap generated between the thread sleeve and the two sides of the bent pipe, then the shape of the elbow pipe mouth is changed into a bell mouth shape through a flaring machine, an O-shaped ring is extruded between the elbow and the internal thread joint to form sealing, then the lining is placed into the bell mouth, the surface of the straight pipe of the copper pipe is pressed into a ring groove and sleeved into the external thread joint, the process of the invention is reasonable, the O-shaped sealing ring increases the sealing property between the threaded cap and the bent pipe, the bushing increases the sealing property between the copper pipe and also increases the sealing property between the threaded cap and the sleeve nut, and the manufacturing process is simple and rapid, thereby providing the quick joint of the heat exchanger with good sealing property.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to a manufacturing process of a heat exchanger quick joint with good sealing performance.
Background
The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied. The heat exchanger is an energy-saving device for transferring heat between materials between two or more fluids with different temperatures, and is used for transferring heat from the fluid with higher temperature to the fluid with lower temperature to make the temperature of the fluid reach the index specified by the process so as to meet the requirements of process conditions, and is also one of main devices for improving the utilization rate of energy.
The inner pipeline of the heat exchanger is connected with the bent pipes through a plurality of through pipes, the process structure is complex in the existing manufacturing process of the through pipes and the bent pipes, and the tightness of the manufactured finished product cannot be guaranteed. In view of the above problems, a solution is proposed as follows.
Disclosure of Invention
The invention aims to provide a manufacturing process of a heat exchanger quick joint with good sealing performance, which has the advantages of simple and quick manufacturing process and capability of providing the heat exchanger quick joint with good sealing performance.
The technical purpose of the invention is realized by the following technical scheme:
a manufacturing process of a heat exchanger quick connector with good sealing performance comprises the following steps:
a: spot welding, namely inserting one end of each of the two internal thread sleeves into the two ends of the bent pipe respectively to enable the bent pipe to keep a certain distance in the thread sleeves, and then welding one end of each of the two thread sleeves to the two ends of the bent pipe respectively through a spot welding machine;
b: sleeving the 0-type sealing ring to the end of the elbow, preliminarily supporting one end of the 0-type sealing ring on two sides of the elbow in the threaded sleeve, and then pressing the other end of the 0-type sealing ring to clamp the 0-type sealing ring into gaps generated on the two sides of the threaded sleeve and the elbow;
c: expanding a horn mouth, clamping the bent pipe positioned in the threaded sleeve on a flaring machine, extruding the bent pipe to one side close to the inner threads of the threaded sleeve by the flaring machine, so that the shape of the bent pipe is changed into the horn mouth shape, and extruding the 0-shaped ring between the elbow and the internal thread joint to form sealing;
d: the bushing is placed into the bell mouth, so that the sealing ring is completely stressed on the bell mouth and the straight pipe and cannot be extruded into the copper pipe;
e: forming a groove, namely fixing a straight pipe of the copper pipe on the other side on a groove forming machine, pressing the surface of the copper pipe to form a ring groove, sleeving the external thread joint, and then putting the clamp spring into the groove to limit the external thread joint at one end of the clamp spring;
f: and finally, combining the copper pipe straight pipe sleeve with the U-shaped elbow sleeve to form the quick connector with excellent sealing performance.
Further, in the step A, the position of the electrode rod is adjusted during welding to ensure that the electrode arms are parallel to each other when the electrode is just pressed on a weldment, then the stage number of a current adjusting switch is changed, a power indicator lamp is lightened after the power is switched on, a spring pressure nut is adjusted to change the compression degree of the spring pressure nut, so that the pressure of the electrode is adjusted, then cooling water is switched on first and then a power supply is switched on to prepare welding, all dirt, oil stain, oxide skin and iron rust are removed before the weldment is welded, the welding part is cleaned by acid cleaning and sand blasting or the oxide skin is removed by a grinding wheel, then the weldment is placed between two electrodes, a pedal is stepped down, the upper electrode is contacted with the weldment and is pressurized, when the pedal is continuously pressed, a power contact switch is switched on, a transformer starts to work, a secondary circuit is electrified to heat the weldment, when the pedal is loosened for welding for a certain time, the electrode is lifted, the power supply is cut off first by the tensile force of the spring to restore the original state, thus completing single spot welding, and finally welding one end of the two thread sleeves to the two ends of the bent pipe respectively through multiple times of single spot welding.
Further, in step C, before flaring, the elbow is fixed on a fixing device of a flaring machine, so that one pipe orifice of the elbow is aligned with a conical head of the flaring machine, then the flaring machine is started in a forward direction, the conical head of the flaring machine slowly rotates clockwise, a lever connected with the conical head of the flaring machine slowly extends, when the conical head of the flaring machine slowly enters the pipe orifice, the pipe orifice is gradually extruded into a horn orifice, then the flaring machine is started in a reverse direction, the conical head of the flaring machine slowly rotates anticlockwise, the lever connected with the conical head of the flaring machine slowly retracts, when the conical head of the flaring machine returns to an initial position, the flaring machine is closed, then the elbow is reversely fixed on the fixing device of the flaring machine, so that the other pipe orifice of the elbow is aligned with the conical head of the flaring machine, the flaring machine is started, the other pipe orifice of the elbow is extruded into the horn orifice by the flaring machine, and after flaring is completed, the sealing ring extruded from the interior of the threaded cap is cut, so that the sealing performance between the threaded cap and the bent pipe is improved.
Further, in step E, after the end face of the through pipe is tightly attached to a positioning plate of a lower wheel of the groove rolling machine, a switch of the groove rolling machine is started, a handle of the oil pump is slowly and stably pulled, the roller of the groove rolling machine descends, the roller is in surface contact with the through pipe, the handle of the oil pump is continuously and slowly and stably pulled at the moment, after the roller rolls to the required size, the groove rolling machine is stopped, whether deviation exists in the position of the rolling groove is checked, whether the depth of the rolling groove is uniform is checked, after the deviation is checked, an air relief hole of the oil pump is moved, oil pressure in the oil pump is gradually reduced, the roller of the groove rolling machine is made to ascend, the through pipe is taken out, one end clamp spring is taken out, the clamp spring is placed into the annular groove, the clamp spring is clamped in the annular groove, and the clamp spring is clamped in the annular groove.
Further, in step F, the cuff nut is rotated after inserting from the one end that the annular was kept away from to the siphunculus, the siphunculus can not follow and rotate together, a copper pipe that the external diameter is slightly littleer than the siphunculus internal diameter is gone into to the return bend inside callipers now, the copper pipe leaves certain distance in the screw cap, insert the screw cap with the copper pipe in, make copper pipe card go into in the copper pipe, later the cuff nut twists in the screw cap, thereby realize being connected the siphunculus with the return bend, the bush has increased the leakproofness between copper pipe and the copper pipe, the leakproofness between screw cap and the cuff nut has also been increased, thereby make the siphunculus more sealed with being connected of return bend.
The invention has the advantages that: the manufacturing method of the whole process is simple and smooth, and the heat exchanger quick connector with good sealing performance is provided through the matching of the sealing ring and the lining.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the invention.
Reference numerals: 1. a threaded sleeve; 2. bending the pipe; 3. a type 0 seal ring; 4. pipe passing; 5. a clamp spring; 6. a bushing; 7. a looping nut.
Detailed Description
The following description is only a preferred embodiment of the present invention, and the protection scope is not limited to the embodiment, and any technical solution that falls under the idea of the present invention should fall within the protection scope of the present invention. It should also be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention.
As shown in fig. 1 to 2, a manufacturing process of a quick coupling of a heat exchanger with good sealing performance includes the following steps:
a; spot welding and forming, removing all dirt, oil stain, oxide skin and iron rust before welding of a weldment, removing the oxide skin at a welding position by acid washing and sand blasting or by using a grinding wheel, adjusting the position of an electrode rod firstly during welding to ensure that electrode arms are mutually parallel when the electrode is just pressed to the weldment, then adjusting the stage number of a switch by current, lightening a power indicator after electrifying, adjusting a spring pressure nut to change the compression degree of the spring pressure nut so as to adjust the pressure of the electrode, then switching on cooling water firstly and then switching on a power supply to prepare welding, then placing the weldment between two electrodes, stepping down a pedal plate, enabling an upper electrode to be in contact with the weldment and pressurizing, switching on a power contact switch when continuously pressing the pedal plate, electrifying a transformer to start a working secondary circuit to heat the weldment, lifting the electrode when the pedal plate is loosened after welding for a certain time, switching off the power supply firstly by the tensile force of the spring and then recovering the original shape, thus completing single spot welding, and finally welding one end of the two thread sleeves 1 to the two ends of the bent pipe 2 through multiple times of single spot welding.
B; and sleeving the 0-type sealing ring 3 to the end of the elbow, preliminarily supporting one end of the 0-type sealing ring 3 on two sides of the elbow 2 in the threaded sleeve 1, and then pressing the other end of the 0-type sealing ring 3 to clamp the 0-type sealing ring 3 into a gap generated between the threaded sleeve 1 and two sides of the elbow 2.
C; before flaring, fixing the bent pipe 2 on a fixing device of a flaring machine to align one pipe orifice of the bent pipe 2 with a conical head of the flaring machine, starting the flaring machine in a forward direction, slowly rotating the conical head of the flaring machine clockwise, slowly extending a lever connected with the conical head of the flaring machine, gradually extruding the pipe orifice into a horn orifice when the conical head of the flaring machine slowly enters the pipe orifice, then starting the flaring machine in a reverse direction, slowly rotating the conical head of the flaring machine anticlockwise, slowly retracting the lever connected with the conical head of the flaring machine, closing the flaring machine when the conical head of the flaring machine returns to an initial position, reversely fixing the bent pipe 2 on the fixing device of the flaring machine to align the other pipe orifice of the bent pipe 2 with the conical head of the flaring machine, starting the flaring machine, extruding the other pipe orifice of the bent pipe 2 into the horn orifice by the flaring machine, finishing flaring, the sealing ring extruded from the interior of the threaded cap is cut, so that the sealing performance between the threaded cap and the elbow pipe 2 is improved.
D; the lining 6 is put into the bell mouth, so that the sealing ring is completely stressed on the bell mouth and the straight pipe and cannot be extruded into the copper pipe
E; the slot shaping, hug closely the back with the terminal surface of siphunculus 4 and the positioning disk of channelling machine lower wheel, start the channelling machine switch, the handle of oil pump is pulled slowly steadily, make the gyro wheel of channelling machine descend, later gyro wheel and siphunculus 4's surface contact, continue the handle of pulling the oil pump slowly steady this moment, wait the gyro wheel roll extrusion to the required size after, stop the channelling machine, whether the inspection channelling position has the deviation, whether the channelling degree of depth is even, the inspection is after mistake-free, move the gas release hole of oil pump, make the oil pressure in the oil pump reduce gradually, thereby make the gyro wheel of channelling machine rise, later take out siphunculus 4, take out one end jump ring 5, put into the annular with jump ring 5, go into jump ring 5 card again, thereby make jump ring 5 block in the annular.
F; at last with copper pipe straight tube external member and U type elbow external member combination, the combination forms the fabulous quick-operation joint of leakproofness, cover mouthful nut 7 rotates cover mouthful nut 7 after inserting from the one end that siphunculus 4 kept away from the annular, siphunculus 4 can not follow and rotate together, the copper pipe that an external diameter is slightly littleer than siphunculus 4 internal diameter is blocked into in return bend 2 now, the copper pipe leaves certain distance in the screw cap, insert the copper pipe in the screw cap, make copper pipe card go into in the copper pipe, later cover mouthful nut 7 twists in the screw cap, thereby realize being connected to siphunculus 4 and return bend 2, bush 6 has increased the leakproofness between copper pipe and the copper pipe, the leakproofness between screw cap and cover mouthful nut 7 has also been increased, thereby make the connection of siphunculus 4 and return bend 2 more sealed.
The manufacturing method of the whole process is simple and smooth, and the heat exchanger quick connector with good sealing performance is provided through the matching of the sealing ring and the lining.
Claims (4)
1. The manufacturing process of the heat exchanger quick connector with good sealing performance is characterized by comprising the following steps of:
a; spot welding and forming, wherein one end of each of the two thread sleeves (1) is respectively inserted into the two ends of the bent pipe (2), so that the bent pipe (2) is kept a certain distance in the thread sleeves (1), then one end of each of the two thread sleeves (1) is respectively welded to the two ends of the bent pipe (2) through a spot welding machine,
b; sleeving the 0-shaped sealing ring (3) to the end head of the bent pipe, preliminarily abutting one end of the 0-shaped sealing ring (3) on two sides of the bent pipe (2) in the threaded sleeve (1), then pressing the other end of the 0-shaped sealing ring (3) to clamp the 0-shaped sealing ring (3) into a gap generated between the threaded sleeve (1) and the two sides of the bent pipe (2),
c; expanding a horn mouth, clamping the bent pipe (2) positioned in the threaded sleeve (1) on a flaring machine, extruding the bent pipe (2) to one side close to the internal thread of the threaded sleeve (1) by the flaring machine so as to change the shape of the port of the bent pipe (2) into the shape of the horn mouth, extruding a 0-shaped sealing ring (3) between the end of the bent pipe (2) and the threaded sleeve (1) to form sealing,
d; installing a lining (6), putting the lining (6) into the bell mouth, leading the lining (6) to be completely stressed on the bell mouth and the inner wall of the thread bush (1) and not to be extruded into the bent pipe (2),
e; forming a groove, namely fixing one end of the through pipe (4) on a groove forming machine, pressing the surface of the through pipe (4) to form a ring groove, sleeving the through pipe (4) into a looping nut (7), then a snap spring (5) is put into the ring groove, so that the looping nut (7) is limited at one end of the snap spring (5), a copper pipe with an outer diameter slightly smaller than the inner diameter of the through pipe (4) is clamped into the bent pipe (2), a certain distance is reserved between the copper pipe and the threaded sleeve (1), the through pipe (4) is inserted into the threaded sleeve (1), the copper pipe is clamped into the through pipe (4), then the looping nut (7) is screwed into the threaded sleeve (1), thereby realize being connected of siphunculus (4) and return bend (2), bush (6) have increased the leakproofness between siphunculus (4) and return bend (2), have also increased the leakproofness between thread bush (1) and linking nut (7), thereby make the connection of siphunculus (4) and return bend (2) more sealed.
2. The process for manufacturing a quick coupling of a heat exchanger with good sealing performance as claimed in claim 1, wherein in step a, the position of the electrode rod is adjusted during welding to keep the electrode arms parallel to each other when the electrode is just pressed against the weldment, then the current is adjusted to a switch level, the power indicator is turned on after power is turned on, the spring pressure nut is adjusted to change the compression degree of the spring pressure nut, so as to adjust the pressure of the electrode, then the cooling water is turned on first and then the power is turned on for welding, all dirt, oil stain, oxide skin and rust are removed before the weldment is welded, the welded part is washed with acid, sand or the oxide skin is removed by using a grinding wheel, then the weldment is placed between the two electrodes, the pedal is stepped down, the upper electrode is in contact with the weldment and is pressurized, when the pedal is continuously depressed, the power contact switch is turned on, the transformer starts to work, the secondary circuit is powered on to heat the weldment, when the pedal is loosened after welding for a certain time, the electrode rises, the power supply is cut off firstly by the tensile force of the spring and then the original state is recovered, so that single-point welding is completed, and finally one end of each of the two thread sleeves (1) is welded to the two ends of the bent pipe (2) respectively through multiple times of single-point welding.
3. The manufacturing process of the quick coupling of the heat exchanger with good sealing performance according to claim 2, characterized in that, in step C, before flaring, the elbow (2) is fixed on a fixing device of a flaring machine, so that one pipe orifice of the elbow (2) is aligned with the conical head of the flaring machine, then the flaring machine is started in a forward direction, the conical head of the flaring machine slowly rotates clockwise, a lever connected with the conical head of the flaring machine slowly extends, when the conical head of the flaring machine slowly enters the pipe orifice, the pipe orifice is gradually squeezed into a bell mouth, then the flaring machine is started in a reverse direction, the conical head of the flaring machine slowly rotates anticlockwise, the lever connected with the conical head of the flaring machine slowly retracts, when the conical head of the flaring machine returns to an initial position, the flaring machine is closed, then the elbow (2) is reversely fixed on the fixing device of the flaring machine, so that the other pipe orifice of the elbow (2) is aligned with the conical head of the flaring machine, and starting the flaring machine, extruding the other pipe orifice of the elbow pipe (2) into a horn mouth by the flaring machine, and cutting the sealing ring extruded out from the thread bush (1) after the flaring is finished, so that the sealing property between the thread bush (1) and the elbow pipe (2) is improved.
4. The manufacturing process of the quick coupling of the heat exchanger with good sealing performance as claimed in claim 3, it is characterized in that in the step E, after the end surface of the through pipe (4) is tightly attached to a positioning disc of a lower wheel of the grooving machine, starting a switch of the grooving machine, slowly and stably pulling a handle of the oil pump to enable a roller of the grooving machine to descend, then enabling the roller to be in contact with the surface of the through pipe (4), continuously and stably pulling the handle of the oil pump at the moment, after the roller is rolled to the required size, stopping the grooving machine, checking whether the position of the rolling groove has deviation or not, checking whether the depth of the rolling groove is uniform or not, moving an air vent of the oil pump after checking that the oil pressure in the oil pump is gradually reduced, thereby make the gyro wheel of slot machine rise, later take out siphunculus (4), take out one end jump ring (5), put into the annular with jump ring (5), go into jump ring (5) card again to make jump ring (5) card in the annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010034071.9A CN111069869B (en) | 2020-01-13 | 2020-01-13 | Manufacturing process of heat exchanger quick connector with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010034071.9A CN111069869B (en) | 2020-01-13 | 2020-01-13 | Manufacturing process of heat exchanger quick connector with good sealing performance |
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| Publication Number | Publication Date |
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| CN111069869A CN111069869A (en) | 2020-04-28 |
| CN111069869B true CN111069869B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010034071.9A Expired - Fee Related CN111069869B (en) | 2020-01-13 | 2020-01-13 | Manufacturing process of heat exchanger quick connector with good sealing performance |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700961A (en) * | 2003-06-16 | 2005-11-23 | 大金工业株式会社 | Method for connecting thin tube to heat transfer tube |
| CN102242838A (en) * | 2011-06-30 | 2011-11-16 | 浙江正康实业有限公司 | Bulge-loop-free self-locking sealing connector for thin-wall stainless steel pipe |
| CN205078953U (en) * | 2015-09-30 | 2016-03-09 | 山东普惠新能源科技有限公司 | Pipeline connector |
| CN209524188U (en) * | 2019-01-18 | 2019-10-22 | 山西富朗德液压技术有限公司 | A kind of flared fitting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10307874B2 (en) * | 2015-01-06 | 2019-06-04 | Asia Vital Components Co., Ltd. | Method for sealing a heat transfer unit |
-
2020
- 2020-01-13 CN CN202010034071.9A patent/CN111069869B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700961A (en) * | 2003-06-16 | 2005-11-23 | 大金工业株式会社 | Method for connecting thin tube to heat transfer tube |
| CN102242838A (en) * | 2011-06-30 | 2011-11-16 | 浙江正康实业有限公司 | Bulge-loop-free self-locking sealing connector for thin-wall stainless steel pipe |
| CN205078953U (en) * | 2015-09-30 | 2016-03-09 | 山东普惠新能源科技有限公司 | Pipeline connector |
| CN209524188U (en) * | 2019-01-18 | 2019-10-22 | 山西富朗德液压技术有限公司 | A kind of flared fitting |
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| Publication number | Publication date |
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| CN111069869A (en) | 2020-04-28 |
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