CN219324901U - Pipe fitting with weld ring and branch pipe with pipe fitting - Google Patents
Pipe fitting with weld ring and branch pipe with pipe fitting Download PDFInfo
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- CN219324901U CN219324901U CN202122807798.9U CN202122807798U CN219324901U CN 219324901 U CN219324901 U CN 219324901U CN 202122807798 U CN202122807798 U CN 202122807798U CN 219324901 U CN219324901 U CN 219324901U
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Abstract
The utility model relates to a pipe fitting with a welding ring and a branch pipe with the pipe fitting. The branch pipe comprises a multi-way joint, and at least one of a plurality of interfaces of the multi-way joint is connected with the pipe fitting. The solder for manufacturing the solder ring comprises the following components in percentage by weight: silver 1.8-2.2%, phosphorus 6.8-7.2%, cerium 0.005-0.02%, indium 0.001-0.01%, strontium 0.1-0.5% and the balance copper. The solder ring prepared by the solder has low melting point, good fluidity and good wettability, and improves the welding effect. When the pipe fitting with the welding ring is used for welding pipes, welding rods do not need to be carried, and the welding interface is uniform and the welding effect is good.
Description
Technical Field
The utility model relates to a pipe fitting with a welding ring and an air conditioner branch pipe with the pipe fitting.
Background
When the household and commercial multi-connected air conditioner (i.e. one outdoor unit is connected with more than two indoor units), the branch pipe (also called branch pipe or branch pipe) is used to split and collect the refrigerant in the on-line pipeline. In the installation process of the traditional air conditioner pipeline, an installation master needs to carry welding rods, and the welding rods are heated and melted by using high-temperature open flame, so that the welding of the connection interface of the branch pipe and other pipes is realized. Such welding has some drawbacks: the first welding interface is uneven in welding, and false welding or sand holes are easy to occur, so that the welding effect is affected, and the leakage of the refrigerator is caused; secondly, carrying the welding rod is inconvenient, and once the welding rod is forgotten to be carried, engineering is delayed; in addition, the use of open fire not only easily causes the incident, but also the high temperature flame welding easily causes the copper pipe to be burnt and soft and produce physical deformation, so that the branch pipe has the hidden trouble of copper pipe fracture and damage caused by long-term high pressure of refrigerant in the use process. In view of the foregoing, it is necessary to develop a pipe fitting with a weld ring and an air conditioner manifold with the pipe fitting that are simple in structure, convenient to weld, and uniform in welding interface.
Disclosure of Invention
The utility model aims to provide a pipe fitting with a welding ring and a branch pipe with the pipe fitting, which have the advantages of simple structure, convenience in welding and uniform welding interface. When the pipe fitting with the welding ring is used for welding, open flame welding operation is not needed, welding of the pipe can be realized by using a high-frequency or ultrahigh-frequency welding machine, the welding interface is uniform, the condition of cold joint or sand holes generated by the traditional welding method can not occur, and the copper pipe can not be damaged.
The aim of the utility model is realized by the following technical scheme:
a pipe fitting with a welding ring comprises a metal pipe body and the welding ring arranged on the inner wall surface of the metal pipe body.
The metal pipe body is provided with an annular expansion part which is coaxially distributed with the metal pipe body, and the welding ring is arranged in the annular expansion part.
The upper edge and the lower edge of the outer wall surface of the welding ring are provided with chamfers A, and the annular expansion part is provided with chamfers B matched with the chamfers A.
At least one end of the metal pipe body is in a step shape with caliber gradually reduced, and a welding ring is arranged on the inner wall surface of each step of pipe.
Preferably, each step of pipe is provided with an annular expansion part coaxially distributed with the pipe, and the welding ring is arranged in the annular expansion part. Preferably, the annular expansion part is provided with a chamfer B matched with the chamfer A of the welding ring.
The branch pipe with the pipe fitting comprises a multi-way joint, wherein at least one of a plurality of interfaces of the multi-way joint is connected with the pipe fitting.
Preferably, the branch pipe is an air conditioner branch pipe, and the multi-way joint is a three-way joint.
The tee joint can be a tee joint such as a trousers tee joint or a U tee joint (U tee joint).
Preferably, the three connectors of the three-way joint are respectively connected with the pipe fitting;
the pipe fitting communicated with the inlet of the three-way joint is a pipe inlet, the pipe fitting communicated with one outlet of the three-way joint is a straight pipe outlet, and the pipe fitting communicated with the other outlet of the three-way joint is a bent pipe outlet;
the upper end of the inlet pipe is communicated with the three-way joint, and the lower end of the inlet pipe is stepped with the caliber gradually reduced from top to bottom;
the lower end of the straight outlet pipe is communicated with the three-way joint, and the upper end of the straight outlet pipe is in a stepped shape with the caliber gradually reduced from bottom to top;
the elbow pipe is divided into a lower straight section extending along the longitudinal direction, the lower end of the lower straight section is connected with the three-way joint, an upper straight section parallel to the lower straight section and positioned above the lower straight section, and an inclined section connected between the lower straight section and the upper straight section; the included angle between the axis of the inclined section and the axis of the upper straight section is 120-150 degrees, and the included angle between the axis of the inclined section and the axis of the lower straight section is 120-150 degrees; the connection parts of the inclined section and the upper straight section and the lower straight section are all in a bending shape; the upper end of the upper straight section is in a step shape with the caliber gradually reduced from bottom to top;
the inner wall surfaces of the inlet pipe, the outlet pipe and each step pipe of the upper straight section are respectively provided with a welding ring, each step pipe is provided with an annular expansion part which is coaxially distributed with the welding rings, and the welding rings are arranged in the annular expansion parts.
The manufacturing method of the air conditioner branch pipe comprises the following steps:
(1) pulling a pipe: drawing a finished copper pipe according to the requirements of the outer diameter and the wall thickness of the copper pipe;
(2) segmentation: cutting the copper pipe into corresponding size and length according to actual needs;
(3) annealing: annealing the cut hard copper pipe under the protection of vacuum nitrogen to form a soft copper pipe with the Vickers hardness of about HV 55;
(4) bending pipe: bending a straight soft copper pipe to form a bent pipe with an included angle of 120-150 degrees between two axes, so as to form the bent pipe;
(5) first order pipe clamp welding ring:
5.1 flaring: flaring the inlet pipe, the outlet straight pipe and the outlet bent pipe according to the corresponding inner diameters to obtain a first-stage pipe, and then flaring the formed first-stage pipe to form a first annular expansion part for accommodating a welding ring;
5.2 clamping welding ring: assembling the welding ring into the first annular expansion part formed in the step 5.1;
5.3 necking: maintaining the inner diameter size shrinkage of the first-stage pipe to ensure that the welding ring is clamped at the position of the first annular expansion part;
(6) second-order pipe clamp welding ring:
6.1 necking: respectively necking the inlet pipe, the outlet straight pipe and the outlet bent pipe which are subjected to the step 5.3 according to the inner diameter smaller than the first-stage pipe, so that the inner diameter of the end head of each pipe is reduced to form a second-stage pipe;
6.2 flaring: flaring the second-stage pipe formed in the step 6.1 to form a second annular expansion part for accommodating the welding ring;
6.3 clamping the welding ring, assembling the welding ring into a second annular expansion part formed by flaring,
6.4 necking: the welding ring is clamped at the position of the second annular expansion part according to the corresponding inner diameter of the second step pipe;
if one end of the pipe inlet, the pipe outlet and the pipe outlet needs to be in a step shape with a step size larger than 2, referring to the steps 6.1-6.4, sequentially necking, flaring, clamping and welding rings and necking the pipe inlet, the pipe outlet and the pipe outlet to obtain a multi-step pipe fitting with a plurality of welding rings;
(7) plane: milling the uneven end surfaces of the inlet pipe, the outlet straight pipe and the outlet bent pipe which are obtained in the step (6) to be flat;
(8) welding: the inlet pipe, the outlet straight pipe and the outlet bent pipe are respectively connected and assembled with the ports corresponding to the three-way joint, and then an automatic welding machine is arranged for welding the interfaces;
(9) cleaning: and grinding, polishing and cleaning the welded finished product.
Preferably, the multi-way joint is a four-way joint.
The solder for manufacturing the solder ring comprises the following components in percentage by weight: silver 1.8-2.2%, phosphorus 6.8-7.2%, cerium 0.005-0.02%, indium 0.001-0.01%, strontium 0.1-0.5% and the balance copper.
The copper may be electrolytic copper # 1.
Preferably, the solder comprises the following components in percentage by weight: silver 2.0%, phosphorus 7.2%, cerium 0.018%, indium 0.002%, strontium 0.48% and the balance copper.
The solder comprises the following components in percentage by weight: silver 1.9%, phosphorus 7.1%, cerium 0.02%, indium 0.01%, strontium 0.47%, and electrolytic copper 1# 90.5%.
The solder comprises the following components in percentage by weight: silver 1.8%, phosphorus 6.8%, cerium 0.005%, indium 0.01%, strontium 0.485%, and 1# electrolytic copper 90.9%.
The solder comprises the following components in percentage by weight: silver 2.2%, phosphorus 7.184%, cerium 0.015%, indium 0.001%, strontium 0.5%, and 1# electrolytic copper 90.1%.
The solder comprises the following components in percentage by weight: silver 2.2%, phosphorus 7.2%, cerium 0.02%, indium 0.01%, strontium 0.1%, and electrolytic copper 1# 90.47%.
The manufacturing method of the welding ring comprises the following process steps:
(1) And (3) batching: firstly, weighing the components according to a proportion;
(2) Smelting and pouring: firstly, melting silver, indium, cerium and strontium into low-melting-point alloy for standby; smelting phosphorus and copper in an intermediate frequency furnace, heating to 1100-1200 ℃ to enable the copper to be completely melted, stirring uniformly, cooling, adding the prepared low-melting-point alloy after the temperature is reduced to 1000 ℃, stirring uniformly until the metal is completely melted, and pouring to form a blank;
(3) Peeling: cutting and peeling impurities and an oxide layer on the surface of the pouring-molded blank;
(4) Extrusion molding: cold extruding the peeled blank into a tube blank;
(5) Pulling a pipe: cold extruding and drawing the pipe blank for 3-5 times to obtain a welding pipe with corresponding specification;
(6) Cutting: cutting the solder tube into solder ring blanks with required widths by using an automatic cutting machine;
(7) Chamfering: cutting and chamfering the welding ring blank by an automatic chamfering machine (namely forming the chamfer A);
(8) Cleaning: and cleaning greasy dirt impurities in the processing process to obtain the welding ring.
During cleaning, alkali liquor is adopted to clean and remove greasy dirt.
Compared with the prior art, the utility model has the advantages that:
1. the solder ring prepared by the solder has low melting point, good fluidity and good wettability, and improves the welding effect. The pipe fitting with the welding ring does not need open flame welding operation in the engineering installation and construction process, and can realize welding of the pipe by matching with a high-frequency or ultrahigh-frequency welding machine only in places with electricity, so that burn and scald and fire caused by open flame are avoided.
2. When the pipe fitting with the welding ring is used for welding pipes, welding rods do not need to be carried, and the welding interface is uniform and the welding effect is good. The pipe fitting can effectively solve the problem that oxygen filling matched with open fire welding in all large cities is inconvenient, and the risk of explosion in the carrying and using process of the pressure container is avoided.
3. The pipe fitting with the welding ring can avoid the technical problems of poor welding, overheating and burning copper pipes and the like during manual open flame welding, and also avoid the hidden quality hazards of refrigerant leakage.
4. In conclusion, the pipe fitting with the welding ring is convenient to install, has low technical requirements, saves cost, has no open flame hidden danger, avoids welding rods and does not need oxygen gas.
5. The air conditioner branch pipe with the pipe fitting not only covers all advantages of the pipe fitting, but also has the advantages that the ends of the inlet pipe, the outlet straight pipe and the outlet bent pipe are all in a ladder shape, and the inner wall surface of each step of pipe is provided with a welding ring, so that the air conditioner branch pipe can be assembled and welded with pipes of various types.
Drawings
Fig. 1 is a schematic structural view of a pipe fitting according to the present utility model.
Fig. 2 is a schematic structural view of another pipe fitting according to the present utility model.
Fig. 3 is a schematic view of the internal structure of the pipe end of fig. 2.
Fig. 4 is a schematic structural view of the weld ring.
Fig. 5 is a schematic structural diagram of an air conditioner manifold according to the present utility model.
Fig. 6 is a schematic structural diagram of another air conditioner manifold according to the present utility model.
Fig. 7 is a schematic structural diagram of another air conditioner manifold according to the present utility model.
Fig. 8 is a schematic structural diagram of another branch pipe according to the present utility model.
Description of the reference numerals: 1 metal pipe body, 11 annular expansion part, 111 chamfer B, 2 weld ring, 21 chamfer A, 3 three-way joint, 31 inlet, 32 outlet, 4 inlet pipe, 5 outlet straight pipe, 6 outlet bent pipe, 61 lower straight section, 62 upper straight section, 63 inclined section.
Detailed Description
The present utility model is described in detail below with reference to the drawings and examples of the specification:
embodiment one: fig. 1 and 2 show schematic structural views of a pipe fitting with a weld ring according to the present utility model.
As shown in fig. 1 and 2, a pipe fitting with a weld ring comprises a metal pipe body 1 and a weld ring 2 arranged on the inner wall surface of the metal pipe body 1.
The welding ring 2 may be the welding ring manufactured in the fifth to ninth embodiments of the present utility model, or may be some other welding ring on the market.
As shown in fig. 1 and 2, the metal pipe body 1 may be a straight pipe body or a curved pipe body, and may of course be a U-shaped pipe body or the like.
The metal pipe body 1 is provided with an annular expansion part 11 which is coaxially distributed with the metal pipe body, and the welding ring 2 is arranged in the annular expansion part 11.
The upper edge and the lower edge of the outer wall surface of the welding ring 2 are provided with chamfers A21, and the annular expansion part 11 is provided with chamfers B111 matched with the chamfers A21.
The arrangement of the chamfer A21 and the chamfer B111 ensures that the welding ring 2 and the metal pipe body 1 can be embedded more firmly, and effectively prevents the welding ring 2 from falling off.
As shown in fig. 1 and 2, one end of the metal pipe body 1 is stepped with a diameter gradually reduced, and a welding ring 2 is arranged on the inner wall surface of each step of pipe. Each stage of pipe is provided with an annular expansion part 11 which is coaxially distributed with the pipe, and the welding ring 2 is arranged in the annular expansion part 11. The annular expansion part 11 is provided with a chamfer B111 matched with the chamfer A21 of the welding ring 2.
Embodiment two: fig. 5 and 6 are schematic structural diagrams of the branch pipe with the pipe fitting according to the present utility model.
As shown in fig. 5 and 6: the branch pipe with the pipe fitting comprises a multi-way joint, wherein at least one of a plurality of interfaces of the multi-way joint is connected with the pipe fitting.
The branch pipe is an air conditioner branch pipe, and the multi-way joint is a three-way joint 3. The tee joint 3 is a trousers tee.
As shown in fig. 5, the three-way joint 3 of the air conditioner manifold has an inlet 31 in communication with the pipe. The pipe fitting connected with the inlet 31, the upper end of which is communicated with the three-way joint 3, the lower end is in a ladder shape with the caliber gradually reduced from top to bottom, the inner wall surface of each step of pipe is provided with a welding ring 2, each step of pipe is provided with an annular expansion part 11 coaxially distributed with the welding ring 2, and the welding ring 2 is arranged in the annular expansion part 11.
As shown in fig. 6, the three interfaces of the three-way joint 3 are respectively connected with the pipe fittings;
the pipe fitting communicated with the inlet 31 of the three-way joint 3 is a pipe inlet 4, the pipe fitting communicated with one outlet 32 of the three-way joint 3 is a straight pipe outlet 5, and the pipe fitting communicated with the other outlet 32 of the three-way joint 3 is a bent pipe outlet 6;
the upper end of the inlet pipe 4 is communicated with the three-way joint 3, and the lower end of the inlet pipe 4 is stepped with the caliber gradually reduced from top to bottom;
the lower end of the straight outlet pipe 5 is communicated with the three-way joint 3, and the upper end of the straight outlet pipe 5 is in a stepped shape with the caliber gradually reduced from bottom to top;
the elbow pipe 6 is divided into a lower straight section 61 extending along the longitudinal direction and the lower end of which is connected with the three-way joint 3, an upper straight section 62 parallel to the lower straight section 61 and positioned above the lower straight section 61, and an inclined section 63 connected between the lower straight section 61 and the upper straight section 62; the included angle between the inclined section 63 and the axis of the upper straight section 62 is 120-150 degrees, and the included angle between the inclined section 63 and the axis of the lower straight section 61 is 120-150 degrees; the joints of the inclined section 63, the upper straight section 62 and the lower straight section 61 are all in a curved shape; the upper end of the upper straight section 62 is in a ladder shape with caliber gradually reduced from bottom to top;
the inner wall surfaces of each step of pipes of the inlet pipe 4, the outlet straight pipe 5 and the upper straight section 62 are respectively provided with a welding ring 2, each step of pipe is provided with an annular expansion part 11 which is coaxially distributed with the welding rings, and the welding rings 2 are arranged in the annular expansion parts 11.
As shown in fig. 6, the lower end of the inlet pipe 4 is in a 3-step ladder shape with gradually reduced caliber from top to bottom, each step pipe is provided with an annular expansion part 11 coaxially distributed with the inlet pipe, and the welding ring 2 is arranged in the annular expansion part 11.
The upper end of the straight pipe 5 is in a 2-step ladder shape with the caliber gradually reduced from bottom to top, each step pipe is provided with an annular expansion part 11 coaxially distributed with the straight pipe, and the welding ring 2 is arranged in the annular expansion part 11.
The upper end of the upper straight section 62 is in a 2-step ladder shape with the caliber gradually reduced from bottom to top, each step pipe is provided with an annular expansion part 11 coaxially distributed with the upper straight section, and the welding ring 2 is arranged in the annular expansion part 11.
Because the ends of the inlet pipe 4, the outlet straight pipe 5 and the outlet bent pipe 6 are all in a ladder shape, and the inner wall surface of each stage of pipe is provided with the welding ring 2, the air conditioner branch pipe can be welded with pipes of various types. If the inlet pipe 4 of the air conditioner branch pipe is matched with the to-be-connected pipe, the end head of the inlet pipe 4 is cut to expose the step pipe matched with the inner diameter of the to-be-connected pipe, and the welding ring 2 is arranged on each step pipe, and then the inlet pipe 4 and the to-be-connected pipe are welded by a high-frequency or ultrahigh-frequency welding machine.
The manufacturing method of the air conditioner branch pipe comprises the following steps:
(1) pulling a pipe: drawing a finished copper pipe according to the requirements of the outer diameter and the wall thickness of the copper pipe;
(2) segmentation: cutting the copper pipe into corresponding size and length according to actual needs;
(3) annealing: annealing the cut hard copper pipe into a soft copper pipe with the HV55 of the left or right through vacuum nitrogen protection;
(4) bending pipe: bending a straight soft copper pipe to form a bent pipe with an included angle of 120-150 degrees between two axes to form a bent pipe 6;
(5) first order pipe clamp welding ring:
5.1 flaring: flaring the inlet pipe 4, the outlet straight pipe 5 and the outlet bent pipe 6 according to corresponding inner diameters to obtain a first-stage pipe, and then flaring the formed first-stage pipe to form a first annular expansion part for accommodating the welding ring 2;
5.2 clamping welding ring: assembling the welding ring 2 into the first annular expansion formed in the step 5.1;
5.3 necking: keeping the inner diameter size shrinkage of the first-stage pipe to ensure that the welding ring 2 is clamped at the position of the first annular expansion part;
(6) second-order pipe clamp welding ring:
6.1 necking: respectively necking the inlet pipe 4, the outlet straight pipe 5 and the outlet bent pipe 6 which are subjected to the step 5.3 according to the inner diameter smaller than that of the first-stage pipe, so that the inner diameter of each pipe is reduced to form a second-stage pipe;
6.2 flaring: flaring the second-stage pipe formed in the step 6.1 to form a second annular expansion part for accommodating the welding ring 2;
6.3 clamping the welding ring, assembling the welding ring 2 into a second annular expansion part formed by flaring,
6.4 necking: the welding ring 2 is clamped at the position of the second annular expansion part according to the corresponding inner diameter of the second step pipe;
if one end of the inlet pipe 4, the outlet straight pipe 5 and one end of the outlet bent pipe 6 are required to be in a step shape with a step size larger than 2, referring to the steps 6.1-6.4, sequentially necking, flaring, clamping welding rings and necking the inlet pipe 4, the outlet straight pipe 5 and the outlet bent pipe 6 to obtain a multi-step stepped pipe fitting with a plurality of welding rings 2; as shown in fig. 6, the lower end of the inlet pipe 4 is 3-step-shaped, and then the inlet pipe 4 is further referred to steps 6.1-6.4, so as to obtain a 3-step-shaped pipe fitting with 3 welding rings 2.
(7) Plane: milling the uneven end surfaces of the inlet pipe 4, the outlet straight pipe 5 and the outlet bent pipe 6 obtained in the step (6) to form flat end surfaces;
(8) welding: the inlet pipe 4, the outlet straight pipe 5 and the outlet bent pipe 6 are respectively connected and assembled with the ports corresponding to the three-way joint 3, and then an automatic welding machine is arranged for welding the ports;
(9) cleaning: and grinding, polishing and cleaning the welded finished product.
Embodiment III: fig. 7 is a schematic structural diagram of another branch pipe with the pipe fitting according to the present utility model.
The branch pipe with the pipe fitting comprises a multi-way joint, wherein at least one of a plurality of interfaces of the multi-way joint is connected with the pipe fitting.
The branch pipe is also an air conditioner branch pipe, the multi-way joint is a three-way joint 3, and the three-way joint 3 is a U-way joint. The three interfaces of the three-way joint 3 are respectively connected with the pipe fitting.
The air conditioner branch pipe has the same structure as that of the air conditioner branch pipe in the second embodiment except that the three-way joint 3 is a U-way joint, and the main difference is that the outlet elbow pipe comprises a straight section extending longitudinally and connected with the U-way joint and a transverse section extending horizontally, and the joint of the straight section and the transverse section is in a bent shape. The right end of the transverse section is in a step shape with gradually reduced caliber from left to right, each step of pipe is provided with an annular expansion part 11 coaxially distributed with the transverse section, and the welding ring 2 is arranged in the annular expansion part 11.
Embodiment four: fig. 8 is a schematic structural diagram of another branch pipe with the pipe fitting according to the present utility model.
The branch pipe with the pipe fitting comprises a multi-way joint, at least one of a plurality of interfaces of the multi-way joint is connected with the pipe fitting, and the multi-way joint is a four-way joint.
As shown in fig. 8, the four interfaces of the four-way joint are respectively connected with the pipe fitting.
Of course, the four-way joint may have only one or two or three of the joints connected with the pipe respectively.
Besides the air conditioner branch pipe with the pipe fitting falls in the protection scope of the utility model, a four-way branch pipe formed by connecting the pipe fitting through a four-way joint is also in the protection scope of the utility model, and other pipes with the pipe fitting of the utility model are also in the protection scope of the utility model.
Fifth embodiment:
the solder for manufacturing the solder ring comprises the following components in percentage by weight: silver 2.0%, phosphorus 7.2%, cerium 0.018%, indium 0.002%, strontium 0.48%, 1# electrolytic copper 90.3%.
The method for manufacturing the welding ring by using the welding flux comprises the following process steps:
(1) And (3) batching: firstly, weighing the components according to a proportion;
(2) Smelting and pouring: firstly, melting silver, indium, cerium and strontium into low-melting-point alloy for standby; smelting phosphorus and copper in an intermediate frequency furnace, heating to 1100-1200 ℃ to enable the copper to be completely melted, stirring uniformly, cooling, adding the prepared low-melting-point alloy when the temperature is reduced to 1000 ℃, stirring uniformly until the metal is completely melted, and pouring to form a blank;
(3) Peeling: cutting and peeling impurities and an oxide layer on the surface of the pouring-molded blank;
(4) Extrusion molding: cold extruding the peeled blank into a tube blank;
(5) Pulling a pipe: carrying out cold extrusion drawing on the pipe blank for a plurality of times to form a welding pipe with corresponding specification;
(6) Cutting: cutting the solder tube into solder ring blanks with required widths by using an automatic cutting machine;
(7) Chamfering: cutting and chamfering the welding ring blank by an automatic chamfering machine (namely forming chamfer angles A21 of the upper edge and the lower edge of the outer wall surface of the welding ring);
(8) Cleaning: and cleaning greasy dirt impurities in the processing process to obtain the welding ring.
During cleaning, alkali liquor can be used for cleaning and degreasing.
Example six:
the solder for manufacturing the solder ring comprises the following components in percentage by weight: silver 1.9%, phosphorus 7.1%, cerium 0.02%, indium 0.01%, strontium 0.47%, and electrolytic copper 1# 90.5%.
The method for manufacturing the solder ring by using the solder is the same as that of the fifth embodiment.
Embodiment seven:
the solder for manufacturing the solder ring comprises the following components in percentage by weight: silver 1.8%, phosphorus 6.8%, cerium 0.005%, indium 0.01%, strontium 0.485%, and 1# electrolytic copper 90.9%.
The method for manufacturing the solder ring by using the solder is the same as that of the fifth embodiment.
Example eight:
the solder for manufacturing the solder ring comprises the following components in percentage by weight: silver 2.2%, phosphorus 7.184%, cerium 0.015%, indium 0.001%, strontium 0.5%, and 1# electrolytic copper 90.1%.
The method for manufacturing the solder ring by using the solder is the same as that of the fifth embodiment.
Example nine:
the solder for manufacturing the solder ring comprises the following components in percentage by weight: silver 2.2%, phosphorus 7.2%, cerium 0.02%, indium 0.01%, strontium 0.1%, and electrolytic copper 1# 90.47%.
The method for manufacturing the solder ring by using the solder is the same as that of the fifth embodiment.
The solders of examples five to nine were tested with solidus temperatures of 645±10 ℃ and liquidus temperatures of 685±10 ℃ (all taking measurement errors into account). The brazing filler metal has good fluidity and good wettability to a base metal during brazing, wherein the wettability test is carried out according to GB/T11364-2008 brazing filler metal wettability experiment method.
The present utility model can be realized by the upper and lower limit values and the interval values of the respective raw materials, and the present utility model can be realized by the respective raw materials, and examples are not limited to this.
It is to be understood that what has been described in the present utility model is the specific embodiments and technical principles of the present utility model, and after reading the above description of the present utility model, those skilled in the art may make various modifications and alterations to the present utility model without departing from the scope of the present utility model, and these equivalent forms also fall within the scope of the present utility model.
Claims (8)
1. A pipe fitting with weld ring, characterized in that: the welding ring comprises a metal pipe body (1) and a welding ring (2) arranged on the inner wall surface of the metal pipe body (1);
the metal pipe body (1) is provided with an annular expansion part (11) which is coaxially distributed with the metal pipe body, and the welding ring (2) is arranged in the annular expansion part (11).
2. A pipe fitting with weld ring as defined in claim 1, wherein: the upper edge and the lower edge of the outer wall surface of the welding ring (2) are provided with chamfers A (21), and the annular expansion part (11) is provided with chamfers B (111) matched with the chamfers A (21).
3. A pipe fitting with weld ring as defined in claim 1, wherein: at least one end of the metal pipe body (1) is in a step shape with caliber gradually reduced, and a welding ring (2) is arranged on the inner wall surface of each step of pipe.
4. A pipe fitting with weld ring as defined in claim 3, wherein: each step of pipe is provided with an annular expansion part (11) which is coaxially distributed with the pipe, and the welding ring (2) is arranged in the annular expansion part (11).
5. A branch pipe with a pipe fitting according to any one of claims 1-4, characterized in that: the pipe fitting comprises a multi-way joint, wherein at least one of a plurality of interfaces of the multi-way joint is connected with the pipe fitting.
6. The branching pipe as set forth in claim 5, wherein: the branch pipe is an air conditioner branch pipe, and the multi-way joint is a three-way joint (3).
7. The branching pipe as set forth in claim 6, wherein: the three interfaces of the three-way joint (3) are respectively connected with the pipe fitting;
the pipe fitting communicated with the inlet (31) of the three-way joint (3) is a pipe inlet (4), the pipe fitting communicated with one outlet (32) of the three-way joint (3) is a straight pipe outlet (5), and the pipe fitting communicated with the other outlet (32) of the three-way joint (3) is a bent pipe outlet (6);
the upper end of the inlet pipe (4) is communicated with the three-way joint (3), and the lower end of the inlet pipe (4) is stepped with the caliber gradually reduced from top to bottom;
the lower end of the straight outlet pipe (5) is communicated with the three-way joint (3), and the upper end of the straight outlet pipe (5) is in a stepped shape with the caliber gradually reduced from bottom to top;
the elbow pipe (6) is divided into a lower straight section (61) extending along the longitudinal direction and the lower end of which is connected with the three-way joint (3), an upper straight section (62) which is parallel to the lower straight section (61) and is positioned above the lower straight section (61), and an inclined section (63) connected between the lower straight section (61) and the upper straight section (62); the included angle between the inclined section (63) and the axis of the upper straight section (62) is 120-150 degrees, and the included angle between the inclined section (63) and the axis of the lower straight section (61) is 120-150 degrees; the connection parts of the inclined section (63) and the upper straight section (62) and the lower straight section (61) are all in a bending shape; the upper end of the upper straight section (62) is in a ladder shape with caliber gradually reduced from bottom to top;
the welding device is characterized in that welding rings (2) are arranged on the inner wall surface of each stage of the pipe of the inlet pipe (4), the outlet pipe (5) and the upper straight section (62), annular expansion parts (11) which are coaxially distributed with the welding rings are arranged on each stage of the pipe, and the welding rings (2) are arranged in the annular expansion parts (11).
8. The branching pipe as set forth in claim 5, wherein: the multi-way joint is a four-way joint.
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| CN202122807798.9U CN219324901U (en) | 2021-11-16 | 2021-11-16 | Pipe fitting with weld ring and branch pipe with pipe fitting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310026A (en) * | 2021-11-16 | 2022-04-12 | 福建同越管件有限公司 | Pipe fitting with welding ring and branch pipe with pipe fitting |
| CN117161562A (en) * | 2023-08-09 | 2023-12-05 | 浙江烯微新能源科技有限公司 | Welding process for elbow and metal tube of heat exchanger by utilizing laser cladding |
-
2021
- 2021-11-16 CN CN202122807798.9U patent/CN219324901U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310026A (en) * | 2021-11-16 | 2022-04-12 | 福建同越管件有限公司 | Pipe fitting with welding ring and branch pipe with pipe fitting |
| CN117161562A (en) * | 2023-08-09 | 2023-12-05 | 浙江烯微新能源科技有限公司 | Welding process for elbow and metal tube of heat exchanger by utilizing laser cladding |
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