Plug-in movable joint of refrigeration pipeline

Abstract

The utility model discloses a plug-in movable joint of a refrigeration pipeline in the technical field of refrigeration pipeline connection, which comprises a butt joint solenoid, a connection main body, a clamping pipe, a clamping pipe fastener, a positioning ring and a non-return clamp spring, and the butt joint solenoid and the clamping pipe are respectively in butt joint with openings at two ends of the connection main body in a sealing way; the two independent butt joint pipes are in sealed butt joint through the butt joint screw pipe, the connecting body and the clamping pipe to form a communicated pipeline, the joint structure of the device is in multi-stage continuous sealing, the two independent butt joint pipes can be connected in a sealed mode, the sealing degree is high, only the connecting body needs to be screwed during butt joint, operation is easy, and meanwhile the butt joint effect is good. During connection, open fire welding, operation of professionals and professional equipment are not needed, space limitation is avoided, insertion is stable, the butt joint pipe can be effectively locked, threads can be locked through deformation of the connection body, and the threads are effectively prevented from loosening in the equipment vibration process.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration pipeline connection technical field, especially a kind of plug-in type union joint of refrigeration pipeline. BACKGROUND

[0002] In the refrigeration pipeline industry, generally heat exchange pipe is copper pipe for the convenience and rapidity of heat transfer, some choose brass, some choose red copper, but all need to select copper pipe with better heat transfer effect, and the refrigeration pipeline needs to ensure sealing, otherwise refrigerant will leak, refrigerant leakage will not only lead to poor refrigeration effect, but also cause various hidden troubles and dangers.

[0003] When this kind of refrigeration pipeline is connected, the conventional butt joint method is prone to looseness and leakage during equipment operation and vibration, therefore, in order to ensure the sealing of the connection, the convenience of pipeline disassembly is abandoned, and therefore the conventional pipe fittings can only be connected by welding, which is firm, but the welding installation and disassembly are not very convenient.

[0004] The welding process of the refrigeration pipeline requires high requirements, and more working hours are consumed by using open flame welding; it has high heat and generates harmful gases, and the welding point and the copper pipe material are different, the welding point will produce a large amount of thermal expansion and cold contraction under the temperature change of refrigerant, and the welding point is prone to fracture during expansion and contraction, which has a high risk of leakage, which is also the reason why the welding method is gradually abandoned in the refrigeration pipeline industry; in order to transfer heat faster, the refrigeration pipeline generally uses copper pipe with thinner wall as much as possible, which is prone to cracks during welding, and the skill requirement of the welding technician is higher, inexperienced welding technicians cannot meet the requirements, resulting in the need to provide a high-skilled welding personnel for each pipeline installation, which is too high in personnel cost, too harsh in installation conditions, and requires a large environment, which brings great inconvenience to installation, especially in on-site construction, even if a welding technician is provided at each construction point, each connection point still needs to be welded, which affects the construction speed, which is the first; secondly, in the refrigeration pipeline maintenance environment, the surrounding of the maintenance point is full of electronic components, which does not have the maintenance construction conditions, and only the whole disassembly maintenance can be adopted; thirdly, although there are currently card pressure type products, because they need special tools and a certain operation space, they cannot completely solve the on-site maintenance problem.

[0005] Now it is necessary to improve the conventional refrigeration pipeline connector to ensure that the pipeline connection is more convenient, has lower professional requirements, is more versatile, can be easily installed without welding, has good sealing performance, and does not affect the smooth flow of refrigerant.

[0006] Based on this, the utility model discloses a kind of plug-in type flexible joints of refrigeration pipeline to solve the above problems. SUMMARY

[0007] The utility model discloses a kind of plug-in type flexible joints of refrigeration pipeline, the joint structure of the device is multistage continuation sealing, two independent pipes can be sealed and connected, and sealing degree is high, two pipes can be sealed and connected by butting screw pipe and clamping card pipe and accessory, the butting end of two pipes is formed independent sealing joint structure, then butting screw pipe and clamping card pipe are sealed and connected directly by the link main body that can be passed through thread, only need to tighten link main body when butting, it is simple to operate, simultaneously, it is not necessary to weld when connecting, plug-in stable, can effectively lock pipe, also can be locked by the deformation of link main body, effectively prevent thread loosening in the process of equipment vibration.

[0008] The utility model is realized as follows: a kind of plug-in type flexible joints of refrigeration pipeline, comprising:

[0009] Butting screw pipe, link main body, clamping card pipe, card pipe fastener, positioning ring, reverse spring;

[0010] The card pipe fastener is the cylindrical structure that the outer wall is provided with thread, the outside of the card pipe fastener is also provided with wrenching structure;

[0011] The butting screw pipe is straight pipe with both ends open, the inner wall and outer wall of the butting screw pipe are provided with thread, and the outside of the butting screw pipe is provided with wrenching structure;The outer end of the butting screw pipe is also sealed and connected with a card pipe fastener, sealing ring, positioning ring and reverse spring are also provided in the sealed cavity between the butting screw pipe and card pipe fastener;

[0012] The clamping card pipe is straight pipe structure, one end of the clamping card pipe is nut structure, the clamping card pipe is clamped in link main body by check ring spring;The outer end of the clamping card pipe is sealed and connected with another card pipe fastener, sealing ring, positioning ring and reverse spring are also provided in the sealed cavity between the clamping card pipe and card pipe fastener;

[0013] The link main body is nut-like structure with both ends open, the inside of the link main body is provided with thread, the left end of the link main body is extended and connected with deformation pipe clamp;

[0014] The butting screw pipe and clamping card pipe are sealed and connected in the both ends open of link main body respectively;The deformation pipe clamp can be deformed and shrunk and wrapped on the outer thread of butting screw pipe.

[0015] Further, the left end of the adapter main body is locked by threads with the butt screw pipe, and at least two sealing rings are arranged between the adapter main body and the butt screw pipe.

[0016] Further, an inwardly protruding clamping table is arranged on the inner wall of the right end of the adapter main body, and a check ring clasp is clamped in the adapter main body;

[0017] An inwardly recessed installation clamping groove is arranged on the outer wall of the clamping pipe, and the installation clamping groove is arranged on the left end of the clamping pipe; the installation clamping groove and the check ring clasp on the clamping table are clamped and limited.

[0018] Further, the positioning ring is a circular ring structure, and a circular ring-shaped limiting table is arranged on one end face of the positioning ring; the limiting table is an inwardly protruding circular ring-shaped step, and the hole diameter of the limiting table is smaller than the hole diameter of the positioning ring.

[0019] Inwardly protruding check teeth are uniformly arranged on the inner ring of the check clasp; the check teeth are uniformly arranged on the inner ring of the check clasp; the check clasp is clamped in the positioning ring, the outer ring of the check clasp abuts against the inner end face of the limiting table, and the check teeth extend into the limiting table ring-shaped hole.

[0020] Further, two sealing rings, two positioning rings and two check clasps are clamped between the clamping pipe and the pipe fastener, and two sealing rings, two positioning rings and two check clasps are clamped between the butt screw pipe and the pipe fastener.

[0021] Each positioning ring is assembled with a check clasp.

[0022] The clamping pipe and the pipe fastener are locked by threads, and the butt screw pipe and the pipe fastener are also locked by threads.

[0023] Further, the butt screw pipe is locked in the adapter main body by threads, and the thickness of the deformed clamp pipe is not more than 1mm.

[0024] The utility model discloses the following beneficial effects: 1, the utility model discloses a butt screw pipe and a pipe fastener, and a complete sealing joint structure is formed at the pipe opening of one smooth butt pipe, and a complete sealing joint structure is formed at the pipe opening of another butt pipe by clamping a clamping pipe and a pipe fastener, so that separate joints are formed on the pipe openings of two smooth copper butt pipes, and the two joints are stably locked with the smooth butt pipes by the plug-in mode, the structure is convenient to install, does not need welding, does not need professional skill welding personnel, does not need special tools, and can be connected by conventional pipelines.

[0025] 2、The two joints of the clamping card pipe and the butt screw pipe of the device can be sealed and locked through the connecting body, and are locked in a threaded manner, the installation mode is simple, the two smooth butt pipes can be sealed and butt-jointed through such a joint mode, the connecting body is provided with a deformation clamp pipe, the deformation clamp pipe can be extruded and deformed to clamp the butt screw pipe through a hard tool, the threaded connection is prevented from loosening in the vibration process of equipment operation, installation is simpler, the structure is more stable, and the sealing performance is stronger.

[0026] 3、The device can complete installation operation through a wrench, installation and dismounting can be completed in the operation space accessible by the wrench, can be popularized to a larger use range, and greatly reduces installation and maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be further described below with reference to the drawings and embodiments.

[0028] Figure 1 It is an overall structure explosion schematic view of the utility model;

[0029] Figure 2 It is a positioning ring and reverse check spring assembly structure schematic view of the utility model;

[0030] Figure 3 It is a connecting body structure schematic view of the utility model;

[0031] Figure 4 It is a butt screw pipe and card pipe fastener butt joint structure schematic view of the utility model;

[0032] Figure 5 It is a clamping card pipe and connecting body clamping relationship schematic view of the utility model;

[0033] Figure 6 It is a left end face front view schematic view of the connecting body of the utility model.

[0034] In the drawings, the component list represented by each sign is as follows:

[0035] 1-butt screw pipe, 2-connecting body, 21-deformation clamp pipe, 22-clamping table, 3-clamping card pipe, 31-arrangement card slot, 32-stop ring clamp spring, 4-sealing ring, 5-card pipe fastener, 6-positioning ring, 61-limiting table, 7-reverse check spring, 71-reverse tooth, 8-butt pipe. PREFERRED EMBODIMENT

[0036] Please refer to Figures 1 to 6 The utility model provides a technical scheme: a plug-in type movable joint of refrigeration pipeline, comprising:

[0037] butt screw pipe 1, connecting body 2, clamping card pipe 3, card pipe fastener 5, positioning ring 6, reverse check spring 7;

[0038] The butt screw pipe 1 is a straight pipe with both ends open, the inner wall and the outer wall of the butt screw pipe 1 are provided with threads, and the outside of the butt screw pipe 1 is provided with a wrenching structure;

[0039] The adapter body 2 is a nut-like structure with both ends open, the inside of the adapter body 2 is provided with threads, and the left end of the adapter body 2 is extended to connect a deformation clamp pipe 21;

[0040] The clamping pipe 3 is a straight pipe structure, one end of the clamping pipe 3 is a nut structure, and the clamping pipe 3 is clamped in the inside of the adapter body 2 through a check ring clamp spring 32;

[0041] The clamping pipe fastener 5 is a cylindrical structure with threads on the outer wall, and the outside of the clamping pipe fastener 5 is also provided with a wrenching structure;

[0042] The butt screw pipe 1 and the clamping pipe 3 are respectively sealed and butt-jointed on the two end openings of the adapter body 2; the deformation clamp pipe 21 can be deformed and tightly wrapped around the outer threads of the butt screw pipe 1;

[0043] The outer end of the butt screw pipe 1 is also sealed and butt-jointed with a clamping pipe fastener 5, and the sealed cavity between the butt screw pipe 1 and the clamping pipe fastener 5 is also provided with a sealing ring 4, a positioning ring 6 and a reverse check spring 7;

[0044] The outer end of the clamping pipe 3 is sealed and butt-jointed with another clamping pipe fastener 5, and the sealed cavity between the clamping pipe 3 and the clamping pipe fastener 5 is also provided with a sealing ring 4, a positioning ring 6 and a reverse check spring 7. The joint structure of the device is multi-stage connected and sealed, can seal and connect two independent butt pipes 8, has high sealing degree, can seal and connect two butt pipes 8 through the butt screw pipe 1, the clamping pipe 3 and the fittings, the butt ends of the two butt pipes 8 form independent sealed joint structures, the butt screw pipe 1 and the clamping pipe 3 are directly sealed and butt-jointed through the threaded adapter body 2, only need to tighten the adapter body 2 during butt-jointing, the operation is simple, the connection does not need welding, the plug-in connection is stable, the butt pipe 8 can be effectively locked, and the threads can be locked through the deformation of the adapter body 2, effectively preventing the threads from loosening during equipment vibration.

[0045] The left end of the adapter body 2 is connected and locked with the butt screw pipe 1 through threads, and at least two sealing rings 4 are further arranged between the adapter body 2 and the butt screw pipe 1 for double sealing, which is more effective;

[0046] An inwardly protruding clamping table 22 is further arranged on the right end inner wall of the adapter body 2, and a check ring clamp spring 32 is further clamped in the left end of the clamping table 22;

[0047] The card pipe 3 is further provided with an inwardly recessed installation card groove 31 on the outer wall of the card pipe 3, the installation card groove 31 is arranged at the left end of the card pipe 3, the installation card groove 31 is limited by the blocking ring clamp spring 32 on the card mounting table 22, the blocking ring clamp spring 32 is locked by the card mounting table 22, and the abutting position of the abutting body 2 and the card pipe 3 is accurate and tightly clamped.

[0048] The positioning ring 6 is a circular ring structure, and a circular ring-shaped limiting table 61 is further arranged on one end face of the positioning ring 6; the limiting table 61 is an inwardly annularly protruding circular ring-shaped step, and the hole diameter of the limiting table 61 is smaller than the hole diameter of the positioning ring 6.

[0049] The inwardly annularly protruding reverse stopping teeth 71 are further arranged on the inner ring of the reverse stopping clamp spring 7, the reverse stopping teeth 71 are annularly arranged on the inner ring of the reverse stopping clamp spring 7, the reverse stopping clamp spring 7 is clamped in the positioning ring 6, the outer ring of the reverse stopping clamp spring 7 abuts against the inner end face of the limiting table 61, and the reverse stopping teeth 71 are arranged in the annular hole of the limiting table 61, so that the position of the reverse stopping clamp spring 7 is accurate, the positioning is accurate, and the abutting is accurate.

[0050] Two sealing rings 4, two positioning rings 6 and two reverse stopping clamp springs 7 are clamped between the card pipe 3 and the pipe fastener 5, and two sealing rings 4, two positioning rings 6 and two reverse stopping clamp springs 7 are also clamped between the abutting screw pipe 1 and the pipe fastener 5.

[0051] Each positioning ring 6 is in abutting assembly with a reverse stopping clamp spring 7.

[0052] The card pipe 3 and the pipe fastener 5 are locked by threads, the abutting screw pipe 1 and the pipe fastener 5 are also locked by threads, and the two reverse stopping clamp springs 7 can ensure that the abutting pipe 8 is locked stably, double-locked, double-sealed, and has better sealing and locking effects.

[0053] The abutting screw pipe 1 is locked in the abutting body 2 by threads, the thickness of the deformed clamp pipe 21 is not more than 1 mm, the deformed clamp pipe 21 can be deformed more easily, the threads are locked tightly, and when the abutting pipe 8 is separated, the threads need to be rotated to separate the deformed clamp pipe 21, so that the abutting pipe 8 cannot be rotated, and the abutting stability is ensured.

[0054] In one specific embodiment of the utility model:

[0055] The utility model discloses an embodiment provides a refrigeration pipeline's plug -in type union joint, the technical problem that the utility model encounters is: 1, the refrigeration pipeline of present is all copper pipeline, generally mainly for brass or red copper, and heat transfer effect is good, and transmission speed is fast, and the butt joint of this copper refrigeration pipeline is difficult, needs to weld, and the butt joint of two refrigeration pipelines is carried out to card pressure or higher sealing degree, so it is higher to the sealing property of refrigeration pipeline joint and requires, and welding operation is difficult, and the technical demand of personnel is high, is not favorable to the construction on site, and such welding mode can also seriously affect the construction speed, 2, welding exists the hidden danger of igniting the equipment of refrigeration pipeline, also has the possibility of transferring a large amount of heat to equipment, can produce danger, needs to do more early protection work, and welding operation is difficult, and the technical demand of personnel is high, is not favorable to the construction on site, and such welding mode can also seriously affect the construction speed, 3, the conventional plug -in connection mode, generally has joint, the joint of present, and the sealing property of connection is not enough, and there is the situation of slow leakage in the process of long -term use, and is greatly influenced by the vibration produced when equipment operation and refrigerant flow, especially the connection mode of threaded pipe, in the long -term vibration process, it is easy to loosen, 4, the conventional welding or card pressure plug -in mode, all need larger operating space, when actual maintenance, there is not enough operating space for decoration maintenance, lead to need integral dismounting and repairing.

[0056] The utility model solves the technical problem that: through multistage connection mode, the sealing property and stability of the butt joint pipe 8 are increased, the stability and sealing property between the butt joint pipe 8 and the butt joint screw pipe 1 and the butt joint pipe 8 and the carding card pipe 3 are ensured, the threaded connection mode of the link main part 2 is more convenient, can also lock the thread through the deformation pipe clamp 21 after connection, effectively avoid the thread loosening caused by vibration, and only need to use the universal wrench to place on the link main part 2 and the butt joint screw pipe 1 to tighten fastening during the whole installation process.

[0057] The technical effect realized is: 1, the utility model through butt joint screw pipe 1 and card pipe fastener 5, form a complete sealing joint structure at the pipe mouth of one smooth butt joint pipe 8, again through carding card pipe 3 and card pipe fastener 5 form complete sealing joint structure at the pipe mouth of another butt joint pipe 8, so form separate joint on the pipe mouth of two smooth copper butt joint pipes 8, and are locked with the smooth butt joint pipe 8 through the way of plug -in, convenient structure installation, do not need to weld, there is no open flame, do not need welding personnel, conventional pipeline connection can be carried out;

[0058] 2, the two joints of the carding card pipe 3 and the butt joint screw pipe 1 of the device can be sealed and locked through the thread cooperation in the link main part 2, and are locked in the way of thread, and the installation mode is simple, and two smooth butt joint pipes 8 can be sealed and butt jointed through such joint mode;

[0059] 3、The connecting main body 2 is also provided with a deformation clamp pipe 21, the deformation clamp pipe 21 can be extruded and deformed by a hard tool to clamp and connect the threads outside the butt joint screw pipe 1, so that the threads are locked, the connection of the threads is prevented from loosening in the vibration process of equipment operation, the structure is more stable, and the connection is tight and not loosened.

[0060] The technical scheme in the embodiment of the utility model solves the above-mentioned problems, and the general idea is as follows:

[0061] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0062] In the manufacturing process, the two disconnected butt joint pipes 8 can be conveniently sealed and inserted when the butt joint screw pipe 1, the connecting main body 2, the clamping pipe 3, the pipe fastener 5, the positioning ring 6 and the reverse check spring 7 are manufactured and then on-site construction is carried out, without using open fire and clamping tools, and the sealing butt joint operation of the two butt joint pipes 8 can be completed by directly inserting through the device by manpower;

[0063] The butt joint screw pipe 1 is a straight pipe with two open ends, the inner wall and the outer wall of the butt joint screw pipe 1 are provided with threads, and the outer part of the butt joint screw pipe 1 is provided with a wrenching structure.

[0064] The connecting main body 2 is a nut-shaped structure with two open ends, the connecting main body 2 is internally provided with threads, the left end of the connecting main body 2 is extended and connected with the deformation clamp pipe 21, the left end of the connecting main body 2 is connected and locked with the butt joint screw pipe 1 through threads, and at least two sealing rings 4 are further arranged between the connecting main body 2 and the butt joint screw pipe 1. The connecting main body 2 and the butt joint screw pipe 1 are sealed through the sealing ring 4, the sealing ring 4 between the connecting main body 2 and the butt joint screw pipe 1 is the same in diameter as the inner wall of the connecting main body 2, and the sealing ring 4 can be tightly sealed with the left end face of the clamping pipe 3.

[0065] The butt joint screw pipe 1 is locked in the inside of the connecting main body 2 through threads, and the thickness of the deformation clamp pipe 21 is not more than 1mm, so that the deformation clamp pipe 21 can be more easily clamped and deformed, the deformed deformation clamp pipe 21 tightly locks the threads on the butt joint screw pipe 1, and the locking between the butt joint screw pipe 1 and the connecting main body 2 is ensured not to loosen.

[0066] The clamping pipe 3 is a straight pipe structure, one end of the clamping pipe 3 is a nut structure, and the clamping pipe 3 is clamped in the inside of the connecting main body 2 through the check ring clamp spring 32; the right end inner wall of the connecting main body 2 is further provided with a clamping table 22 protruding inward, and the check ring clamp spring 32 is clamped in the inside of the connecting main body 2, and the check ring clamp spring 32 is clamped in the left end of the clamping table 22.

[0067] The outer wall of the clamping card tube 3 is also inwardly recessed to provide a clamping groove 31, which is annularly arranged at the left end of the clamping card tube 3, and the clamping groove 31 is limited by the blocking ring spring 32 on the clamping table 22.

[0068] The clamping card tube 3 is also inwardly recessed to provide a clamping groove 31, which is annularly arranged at the left end of the clamping card tube 3, and the clamping groove 31 is limited by the blocking ring spring 32 on the clamping table 22.

[0069] The clamping card tube 3 is also inwardly recessed to provide a clamping groove 31, which is annularly arranged at the left end of the clamping card tube 3, and the clamping groove 31 is limited by the blocking ring spring 32 on the clamping table 22.

[0070] The outer end of the clamping card tube 3 is also sealed to the other clamping fastener 5, and the sealed cavity between the clamping card tube 3 and the clamping fastener 5 also provides a sealing ring 4, a positioning ring 6 and a reverse stop spring 7, and the clamping card tube 3 is sealed and clamped on the outer wall of the other connecting pipe 8 through the clamping fastener 5, the sealing ring 4, the positioning ring 6 and the reverse stop spring 7.

[0071] The inner ring of the reverse stop spring 7 is also uniformly inwardly protruding to provide a reverse stop tooth 71, which is uniformly annularly arranged on the inner ring of the reverse stop spring 7, and the reverse stop spring 7 is clamped inside the positioning ring 6, and the outer ring of the reverse stop spring 7 abuts against the inner end face of the limiting table 61, and the reverse stop tooth 71 extends into the annular hole of the limiting table 61. The reverse stop spring 7 is positioned by the positioning ring 6 to ensure stable clamping. The positioning ring 6 and the limiting table 61 are integral circular stepped structures.

[0072] The outer end of the clamping card tube 3 is also sealed to the other clamping fastener 5, and the sealed cavity between the clamping card tube 3 and the clamping fastener 5 also provides a sealing ring 4, a positioning ring 6 and a reverse stop spring 7, and the clamping card tube 3 is sealed and clamped on the outer wall of the other connecting pipe 8 through the clamping fastener 5, the sealing ring 4, the positioning ring 6 and the reverse stop spring 7.

[0073] The clamping card tube 3 and the clamping fastener 5 are clamped with two sealing rings 4, two positioning rings 6 and two reverse stop springs 7, and the connecting pipe 1 and the clamping fastener 5 are also clamped with two sealing rings 4, two positioning rings 6 and two reverse stop springs 7.

[0074] Each positioning ring 6 is assembled with a reverse stop spring 7.

[0075] The clamping card tube 3 and the clamping fastener 5 are locked by threads, and the connecting pipe 1 and the clamping fastener 5 are also locked by threads.

[0076] The butt screw pipe 1, the connecting main body 2, the clamping pipe 3, the pipe fastener 5 and the positioning ring 6 are copper pipe assemblies, and the reverse stop spring 7 is a stainless steel assembly, the copper positioning ring 6 and the stainless steel reverse stop spring 7 are connected closely, there is almost no gap after pipe assembly is completed, vibration during equipment operation is effectively reduced or avoided, and the reverse stop spring 7 and the positioning ring 6 are clamped stably on the butt pipe 8.

[0077] The outer end of the butt screw pipe 1 is also sealed and connected with a pipe fastener 5, and the sealing ring 4, the positioning ring 6 and the reverse stop spring 7 are arranged in the sealed cavity between the butt screw pipe 1 and the pipe fastener 5, the butt screw pipe 1, the sealing ring 4, the pipe fastener 5, the positioning ring 6 and the reverse stop spring 7 are clamped on the outer wall of a butt pipe 8, the butt pipe 8 is locked in the butt screw pipe 1 through the reverse stop spring 7, and the butt pipe 8 is sealed and sleeved in the pipe fastener 5 through the sealing ring 4.

[0078] The two butt pipes 8 are sealed and connected as a whole pipeline through the clamping pipe 3, the connecting main body 2, the butt screw pipe 1 and the pipe fastener 5 and the sealing ring 4, the positioning ring 6 and the reverse stop spring 7 in the pipe fastener 5.

[0079] In use, the joints of the two butt pipes 8 are assembled and installed first, as shown in Figure 1 The left end opening of the butt screw pipe 1 is inserted into the two sealing rings 4, alignment is ensured, then a positioning ring 6 and a reverse stop spring 7 are inserted into the butt screw pipe 1 in sequence, the reverse stop spring 7 is clamped on the limiting table 61, the reverse teeth 71 of the reverse stop spring 7 are in the form of barbs and are inclined inward, that is, the end of the reverse teeth 71 in the interior of the butt screw pipe 1 is smaller, and the butt pipe 8 can be smoothly inserted but cannot be taken out.

[0080] Then a positioning ring 6 and a reverse stop spring 7 are inserted into the butt screw pipe 1 again, double clamping is formed, and the insertion stability of the butt pipe 8 is ensured. The sealing ring 4 is installed in the pipe fastener 5, and finally a pipe fastener 5 is covered, and the pipe fastener 5 and the butt screw pipe 1 are locked by the butt screw thread knob; the installation of a sealed joint is completed.

[0081] Another sealed joint is also installed in the same way, as shown in Figure 1As shown, after the two sealing rings 4, one positioning ring 6, and one reverse card spring 7 are sequentially inserted into the right end opening of the card-mounted card pipe 3, ensure that they are in close alignment, and then the other positioning ring 6 and reverse card spring 7 are inserted again, ensure that they are in close alignment, the positioning ring 6 is used to accurately position the reverse card spring 7, and finally the above-mentioned accessories are covered in the right end opening of the card-mounted card pipe 3 through a card pipe fastener 5 which has been installed with a sealing ring 4, the card-mounted card pipe 3 and the card pipe fastener 5 need to be screwed together to press the internal accessories tightly. The double sealing structure prevents refrigerant leakage in the pipeline; the reverse card spring 7 is barbed, when inserted from the front, the copper butt joint pipe 7 can be smoothly inserted into the internal joint of the device, thereby easily completing the assembly; when pulled out in reverse, because the reverse teeth 71 of the reverse card spring 7 are barbed, the butt joint pipe 8 is ensured not to fall off, and the double reverse card spring 7 can better ensure that the butt joint pipe 8 will not fall off during use. The sealing ring 4 installed on the card pipe fastener 5 can effectively prevent harmful gases such as condensed water and environmental corrosion from entering the internal structure of the device during use, thereby corroding the internal structure and prolonging the service life of the device.

[0082] Then install the card-mounted card pipe 3 in the connection main body 2, insert the left end of the card-mounted card pipe 3 into the internal connection main body 2, make the card-mounted card pipe 3 pass out of the connection main body 2, then clamp the blocking ring spring 32 on the clamping groove 31, and finally clamp the blocking ring spring 32 on the left side of the clamping table 22, and the wrench structure of the main body of the card-mounted card pipe 3 is located outside the right end of the connection main body 2;

[0083] Then insert at least two sealing rings 4 from the left side port of the connection main body 2, and finally insert the butt joint pipe 1 from the left side port of the connection main body 2, and tighten the butt joint pipe 1 in the internal connection main body 2, ensure its stability, and ensure that the sealing ring in the internal connection main body 2 is clamped between the butt joint pipe 1 and the card-mounted card pipe 3, so that the butt joint of the left and right two sealing joints is completed, thereby completing the sealing butt joint of the butt joint pipe 1 and the card-mounted card pipe 3 through the connection main body 2, after completing the sealing butt joint, use a hard tool to deform the deformed pipe clamp 21, thereby locking the threads outside the butt joint pipe 1, and ensure that the butt joint pipe 1 will not fall out due to vibration; the threads between the card pipe fastener 5 and the butt joint pipe 1 and the card pipe fastener 5 and the card-mounted card pipe 3 can be locked and clamped through the elasticity of the reverse card spring 7, effectively avoiding thread loosening.

[0084] When installation is needed on site, only need to insert the two butt pipes 8 to be connected from left and right sides into the assembled device respectively, after insertion, the reverse card spring 7 will prevent the butt pipe 8 from falling out, and multiple sealing rings can be wrapped around the outer wall of the butt pipe 8, thereby sealing and inserting the two smooth butt pipes 8, the operation is very simple, convenient to use, and the connection main body 2 and the butt screw pipe 1 can also be removed and separated according to the needs, so as to facilitate replacement and reinstallation, when reinstallation, because the deformation pipe clamp 21 needs to be deformed to lock the butt screw pipe 1, it is best to replace and use a new connection main body 2, and the device is more convenient to disassemble and assemble.

[0085] The device can prevent fire accidents caused by construction process, can break through the situation that a large amount of maintenance work or even maintenance cannot be carried out in the maintenance process due to space or other components and the like, so as to greatly reduce the cost and improve the work efficiency.

[0086] In addition, in the description of the present application, it should be pointed out that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", "top", "bottom" and the like appear, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0087] Although the specific embodiments of the present application are described above, those skilled in the art should understand that the specific examples described are only illustrative, and are not used to limit the scope of the present application, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present application should be covered within the scope of the claims of the present application.

Claims

1. A plug-in field joint for a refrigerant line, characterized by Include: The butt joint screw pipe (1), the connection main body (2), the clamping card pipe (3), the card pipe fastener (5), the positioning ring (6), the reverse stop card spring (7); The card pipe fastener (5) is a cylindrical structure with threads on the outer wall, and the outer part of the card pipe fastener (5) is provided with a wrenching structure. The butt joint screw pipe (1) is a straight pipe with open ends, the inner and outer walls of the butt joint screw pipe (1) are provided with threads, and the outer part of the butt joint screw pipe (1) is provided with a wrenching structure; The outer end of the butt joint screw pipe (1) is also sealed to a card pipe fastener (5), and a sealing ring (4), a positioning ring (6) and a reverse stop card spring (7) are arranged in the sealed cavity between the butt joint screw pipe (1) and the card pipe fastener (5). The clamping card pipe (3) is a straight pipe structure, one end of the clamping card pipe (3) is a nut structure, and the clamping card pipe (3) is clamped inside the connection main body (2) through the check ring card spring (32); The outer end of the clamping card pipe (3) is sealed to another card pipe fastener (5), and a sealing ring (4), a positioning ring (6) and a reverse stop card spring (7) are also arranged in the sealed cavity between the clamping card pipe (3) and the card pipe fastener (5). The connection main body (2) is a nut-like structure with open ends, the inside of the connection main body (2) is provided with threads, and the left end of the connection main body (2) is extended to connect a deformation clamp pipe (21). The butt joint screw pipe (1) and the clamping card pipe (3) are respectively sealed to the open ends of the connection main body (2); The deformation clamp pipe (21) can be deformed and tightly wrapped around the outer threads of the butt joint screw pipe (1).

2. An insert-type union for a refrigerant line according to claim 1, characterized in that: The left end of the connection main body (2) is connected and locked with the butt joint screw pipe (1) through threads, and at least two sealing rings (4) are arranged between the connection main body (2) and the butt joint screw pipe (1).

3. An insert-type union for a refrigerant line according to claim 1, wherein: The left end of the connection main body (2) is also arranged with a clamping table (22) protruding inward on the inner wall of the right end, and a check ring card spring (32) is clamped inside the connection main body (2), and the check ring card spring (32) is arranged at the left end of the clamping table (22). The clamping card pipe (3) is also provided with a clamping groove (31) recessed inward on the outer wall, the clamping groove (31) is arranged at the left end of the clamping card pipe (3), and the clamping groove (31) and the check ring card spring (32) on the clamping table (22) are clamped and limited.

4. An insert-type union for a refrigerant line according to claim 1, wherein: The positioning ring (6) is a circular ring structure, one end face of the positioning ring (6) is also provided with a circular ring-shaped limiting table (61), the limiting table (61) is a circular ring-shaped step protruding inward, and the hole diameter of the limiting table (61) is smaller than the hole diameter of the positioning ring (6); The inner ring of the reverse stop card spring (7) is also uniformly provided with reverse teeth (71) protruding inward, the reverse teeth (71) are uniformly arranged on the inner ring of the reverse stop card spring (7), the reverse stop card spring (7) is clamped inside the positioning ring (6), the outer ring of the reverse stop card spring (7) abuts against the inner end face of the limiting table (61), and the reverse teeth (71) extend into the circular hole of the limiting table (61).

5. An insert-type union for a refrigerant line according to claim 1, wherein: The clamping card pipe (3) and card pipe fastener (5) between the clamping of two sealing ring (4), two positioning ring (6) and two reverse card spring (7), the butt screw pipe (1) and card pipe fastener (5) between the clamping of two sealing ring (4), two positioning ring (6) and two reverse card spring (7) also; And each said positioning ring (6) with a reverse card spring (7) each other fit assembly; The clamping card pipe (3) and card pipe fastener (5) through the thread locking, the butt screw pipe (1) and card pipe fastener (5) between the thread locking also.

6. An insert-type union for a refrigerant line according to claim 1, wherein: The butt screw pipe (1) through the thread locking in the inside of the convergence main body (2), the thickness of the deformation clamp pipe (21) is not more than 1mm.

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