CN114131226A - Manufacturing method of tee joint - Google Patents
Manufacturing method of tee joint Download PDFInfo
- Publication number
- CN114131226A CN114131226A CN202010924145.6A CN202010924145A CN114131226A CN 114131226 A CN114131226 A CN 114131226A CN 202010924145 A CN202010924145 A CN 202010924145A CN 114131226 A CN114131226 A CN 114131226A
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- China
- Prior art keywords
- sleeve
- pipe
- blank
- tee joint
- tee
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The application relates to a manufacturing method of a sleeve tee joint, belonging to the field of pipeline equipment. The method comprises the following steps: acquiring a tee joint, a main pipe sleeve and a branch pipe sleeve, wherein the tee joint comprises a main pipe orifice and a branch pipe orifice; connecting the main pipe sleeve with the main pipe port, and connecting the branch pipe sleeve with the branch pipe port to obtain a sleeve tee joint; the specifications of the main pipe sleeve and the first butt joint pipeline are consistent, and the specifications of the branch pipe sleeve and the second butt joint pipeline are consistent; performing groove machining on a first pipe orifice of a main pipe sleeve; and (4) performing groove machining on the first pipe orifice of the branch pipe sleeve. A main pipe sleeve and a branch pipe sleeve are additionally arranged on the tee joint, wherein the main pipe sleeve and the first butt joint pipe prop have the same specification and the same groove parameters of the two pipe orifices, the branch pipe sleeve and the second butt joint pipe prop have the same specification and the same groove parameters of the two pipe orifices, and the welding efficiency and the welding quality can be improved in the process of connecting the sleeve tee joint with the first butt joint pipe and the second butt joint pipe.
Description
Technical Field
The application relates to the field of pipeline equipment, in particular to a manufacturing method of a sleeve tee joint.
Background
The tee joint is an important pipeline accessory in pipeline engineering construction and is mainly used for pipeline branching, turning, reducing and the like.
At present, tee joints selected from oil and gas pipelines, chemical pipelines and the like are mainly manufactured by hot extrusion drawing, cold extrusion, welding and other methods. The wall thickness of a main pipe and a branch pipe of the extrusion-molded large-caliber thick-wall tee joint is uniformly transited but unequal in distribution characteristics along the circumferential direction, the cross sections of pipe ends of the main pipe and the branch pipe of the tee joint are in non-standard circular shapes, the integral pipe diameter and the wall thickness of the tee joint are generally larger than those of a butt joint steel pipe, certain difficulty exists in welding and assembling the tee joint and the butt joint steel pipe, full-automatic welding methods and the like are difficult to adopt when the tee joint is connected with the butt joint steel pipe, and the problem of welding quality is easy to generate, so that the design and manufacture of the novel tee joint are very necessary.
Disclosure of Invention
The embodiment of the application provides a method for manufacturing a sleeve tee joint, which can improve the efficiency of the tee joint in the process of welding with a butt joint pipeline and ensure the welding quality of the tee joint. The technical scheme is as follows:
a method of manufacturing a sleeve tee is provided, the method comprising:
acquiring a tee joint, a main pipe sleeve and a branch pipe sleeve, wherein the tee joint comprises a main pipe orifice and a branch pipe orifice;
connecting the main pipe sleeve with the main pipe port, and connecting the branch pipe sleeve with the branch pipe port to obtain a sleeve tee joint;
the specifications of the main pipe sleeve and the first butt joint pipeline are consistent, and the specifications of the branch pipe sleeve and the second butt joint pipeline are consistent;
performing groove machining on a first pipe orifice of the main pipe sleeve to obtain a first groove pipe orifice, wherein groove parameters of the first groove pipe orifice are the same as those of the first butt joint pipe;
and performing groove machining on the first pipe orifice of the branch pipe sleeve to obtain a second groove pipe orifice, wherein groove parameters of the second groove pipe orifice are the same as those of the second butt joint pipeline, and the groove parameters comprise groove form and size.
In an alternative embodiment, said connecting said main tube sleeve with said main tube port comprises:
connecting the second pipe orifice of the main pipe sleeve with the main pipe orifice in a welding connection mode;
the connecting the branch sleeve with the branch opening comprises:
and connecting the second pipe orifice of the branch pipe sleeve with the branch pipe orifice in a welding connection mode.
In an alternative embodiment, the length of the main tube sleeve is within a first predetermined length requirement range;
the length of the branch pipe sleeve is within a second preset length requirement range.
In an alternative embodiment, the gauge comprises at least one of steel pipe type, pipe grade, steel grade, pipe diameter, wall thickness, delivery status.
In an optional embodiment, the obtaining tee comprises:
obtaining tee joint raw materials;
pretreating the tee joint raw material to obtain a pipe blank;
carrying out hot extrusion drawing forming treatment on the tube blank to obtain a blank tee joint;
and performing groove machining on the main pipe orifice and the branch pipe orifice of the blank tee joint, and inspecting the blank tee joint to obtain the tee joint.
In an alternative embodiment, said obtaining a main tubular sleeve comprises:
obtaining a main pipe and sleeve raw material;
cutting and blanking the main pipe sleeve raw material to obtain a blank main pipe sleeve;
and performing groove processing on the blank main pipe sleeve, and inspecting the blank main pipe sleeve to obtain the main pipe sleeve.
In an alternative embodiment, the harvesting manifold sleeve comprises:
obtaining a branch pipe sleeve raw material;
cutting and blanking the raw material of the branch pipe sleeve to obtain a blank branch pipe sleeve;
and performing groove processing on the blank branch pipe sleeve, and inspecting the blank branch pipe sleeve to obtain the branch pipe sleeve.
In an alternative embodiment, said obtaining a sleeve tee comprises:
obtaining a blank sleeve tee joint, wherein the blank sleeve tee joint is obtained by welding and assembling a tee joint, a main pipe sleeve and a branch pipe sleeve;
carrying out a pressure test on the blank sleeve tee;
and inspecting the blank sleeve tee joint to obtain the sleeve tee joint.
In an optional embodiment, the performing a pressure test on the blank sleeve tee comprises:
sealing the pipe orifice of the blank sleeve tee;
connecting pressure-resistant test equipment to the blank sleeve tee joint, and performing pressure-resistant test on the blank sleeve tee joint under preset test parameters;
and determining the pressure resistance test result of the blank sleeve tee joint according to the pressure resistance performance of the blank sleeve tee joint.
In an optional embodiment, the sealing the orifice of the blank sleeve tee comprises:
welding and sealing the pipe orifice of the blank sleeve tee joint by adopting at least one sealing material of a pipe cap, an end socket and a blind plate;
or, mechanically sealing the pipe orifice of the blank sleeve tee joint by adopting a detachable sealing device.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the main pipe sleeves are welded at the main pipe openings of the tee joint, the branch pipe sleeves are welded at the branch pipe openings of the tee joint, and the sleeve tee joint is obtained.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a tee provided in an exemplary embodiment of the present application;
FIG. 2 is a perspective view of a tee provided in accordance with an exemplary embodiment of the present application;
FIG. 3 is a flow chart of a method of making a tee provided in an exemplary embodiment of the present application;
FIG. 4 is a flowchart of a method for acquiring a sleeve triplet according to an exemplary embodiment of the present application;
FIG. 5 is a flowchart of a sub-step tee acquisition method in a sleeve tee acquisition method according to an exemplary embodiment of the present application;
FIG. 6 is a flowchart of a sub-step method for acquiring master sleeves in a sleeve tee acquisition method according to an exemplary embodiment of the present application;
FIG. 7 is a flowchart of a sub-step branch sleeve acquisition method in a sleeve tee acquisition method according to an exemplary embodiment of the present application;
FIG. 8 is a flowchart of a method for connecting tee joints with main and branch sleeves in a sub-step of a method for acquiring sleeve tee joints according to an exemplary embodiment of the present application;
fig. 9 is a flowchart of a pressure test method of a blank sleeve tee according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a method for manufacturing a sleeve tee joint, and the structure of the sleeve tee joint is schematically explained.
FIG. 1 is a cross-sectional view of a tee according to an exemplary embodiment of the present application, as shown in FIG. 1, the sleeve tee comprising: tee 101, main pipe sleeve 102 and branch pipe sleeve 103.
The tee 101 is a finished tee pipe fitting; or, the tee 101 is a tee pipe fitting obtained by processing and inspecting raw materials.
The main pipe sleeve 102 is directly cut from the finished butt joint pipeline; alternatively, the main tube sleeve 102 is manufactured and inspected from the same raw material as the main tube.
The branch sleeve 103 is a sleeve obtained by directly cutting a finished butt joint pipeline; alternatively, the branch sleeve 103 may be formed and inspected from the same material as the branch.
The main pipe sleeve 102 is connected with the main pipe opening 104, the left and right structures of the tee joint 101 in figure 1 are the main pipe sleeve 102, and the branch pipe sleeve 103 is connected with the branch pipe opening 105 to obtain the sleeve tee joint.
The specification of the main pipe sleeve 102 is consistent with that of the first butt joint pipeline, and the groove parameters of the first pipe opening 107 of the main pipe sleeve 102 are the same as those of the first butt joint pipeline.
The specifications of the branch sleeve 103 and the second butt joint pipeline are consistent, and the groove parameters of the first pipe orifice 109 of the branch sleeve 103 and the second butt joint pipeline are the same.
The second pipe orifice 106 of the main pipe sleeve 102 is connected with the main pipe orifice 104 by welding, and the second pipe orifice 108 of the branch pipe sleeve 103 is connected with the branch pipe orifice 105 by welding.
Wherein, the first pipe orifice 106 of the main pipe sleeve 102 and the main pipe orifice 104 are welded after being processed into the same groove; the first pipe orifice 108 of the branch pipe sleeve 103 and the branch pipe orifice 105 are processed into the same groove and then are welded.
The second pipe opening 107 of the main pipe sleeve 102 is a first beveled pipe opening after beveling, and the second pipe opening 109 of the branch 0 pipe sleeve 103 is a second beveled pipe opening after beveling.
The length of the main pipe sleeve 102 is within a first preset length requirement range, and the length of the branch pipe sleeve 103 is within a second preset length requirement range.
The lower limit of the first preset length requirement range and the second preset length requirement range is 200mm, namely the lengths of the main pipe and the branch pipe are not less than 200mm, the upper limit can be limited by specific process requirements, and the upper limit of the first preset length requirement range and the second preset length requirement range is schematically required to meet the pipeline installation requirements and pipeline transportation requirements and the like.
The specification of the pipeline comprises at least one of steel pipe type, pipeline grade, steel grade, pipe diameter, wall thickness and delivery state, and specific parameters of the specification are recorded in a process manufacturing file.
Fig. 2 is a perspective view of a tee according to an exemplary embodiment of the present application, the tee having a one-to-one structure corresponding to fig. 1, the tee comprising: a tee joint 101, a main pipe sleeve 102 and a branch pipe sleeve 103; tee 101 includes main pipe orifice 104 and branch pipe orifice 105; the main pipe sleeve 102 is connected with the main pipe opening 104, the left and right structures of the tee joint 101 in the figure 2 are the main pipe sleeve 102, and the branch pipe sleeve 103 is connected with the branch pipe opening 105; the specifications of the main pipe sleeve 102 and the first butt joint pipeline are consistent, and the forms and the sizes of the first pipe orifice 107 of the main pipe sleeve 102 and the pipe orifice grooves of the first butt joint pipeline are the same; the specifications of the branch sleeve 103 and the second butt joint pipeline are consistent, and the forms and the sizes of the first pipe orifice 109 of the branch sleeve 103 and the pipe orifice groove of the second butt joint pipeline are the same.
In summary, in the embodiment, the main pipe sleeves are welded at the main pipe opening of the tee joint, the branch pipe sleeves are welded at the branch pipe openings of the tee joint, the main pipe sleeves with the same specification as the first pair of connecting pipes are adopted, the groove form and the size of the main pipe sleeves are the same as those of the first pair of connecting pipes, the branch pipe sleeves with the same specification as the second pair of connecting pipes are adopted, and the groove form and the size of the branch pipe sleeves are the same as those of the second pair of connecting pipes.
The embodiment of the present application provides a method for manufacturing a sleeve tee, as shown in fig. 3, the method includes:
Optionally, the tee joint, the main pipe sleeve and the branch pipe sleeve are finished pipe fittings; or, the material is obtained by processing and manufacturing the purchased or manufactured raw material through related processes.
If the tee joint is a finished pipe fitting, the tee joint does not need to be inspected, whether the index of the tee joint is qualified or not is determined, if the tee joint is made of raw materials, an applicable hot extrusion drawing forming method and equipment are selected according to the type, steel grade, wall thickness and other factors of the raw materials of the tee joint, forming processing is carried out, a blank tee joint is made, beveling processing is carried out on the blank tee joint, visual appearance inspection, size and shape inspection and nondestructive inspection are carried out on the processed blank tee joint, and the applicable tee joint is obtained.
The sleeve is a pipeline accessory material, the end of the steel pipe made by relevant process requirements is used for welding the pipe orifice of the tee joint, and the specification of the sleeve is determined by the pipeline to be connected with the target tee joint.
If the main pipe sleeves and the branch pipe sleeves are finished pipe fittings, the finished pipe fittings can be cut from the pipes with the same specification as the butted pipes and processed, and if the main pipe sleeves and the branch pipe sleeves are made of raw materials, the finished pipe fittings are processed and manufactured according to the manufacturing process of the butted steel pipes and the specification of the steel pipes.
And step 302, connecting the main pipe sleeve with the main pipe opening, and connecting the branch pipe sleeve with the branch pipe opening to obtain a sleeve tee joint.
The second pipe orifice of the main pipe sleeve is connected with the main pipe orifice of the tee joint by welding.
The second pipe orifice of the branch pipe sleeve is connected with the branch pipe orifice of the tee joint by welding.
The tee joint is connected with the main pipe sleeve and the branch pipe sleeve into a whole to obtain the sleeve tee joint.
The main pipe sleeve is in accordance with the first butt joint pipeline in specification, and the branch pipe sleeve is in accordance with the second butt joint pipeline in specification.
The first butt joint pipeline is a butt joint pipeline connected with a main pipe of the sleeve tee joint, and the second butt joint pipeline is a butt joint pipeline connected with a branch pipe of the sleeve tee joint.
The specification includes at least one of a type of steel pipe, a grade of steel, a pipe diameter, a wall thickness, and a delivery state.
And (3) performing groove processing on the first pipe orifice of the main pipe sleeve by using a groove machine, wherein after the groove processing is performed, the groove angle and the truncated edge of the pipe end meet the process requirements.
The groove parameters comprise groove form and size.
And 304, performing groove machining on the first pipe orifice of the branch pipe sleeve to obtain a second groove pipe orifice, wherein groove parameters of the second groove pipe orifice are the same as those of a second butt joint pipe, and the groove parameters comprise groove forms and sizes.
And (3) performing groove processing on the first pipe orifice of the branch pipe sleeve by using a groove machine, wherein after the groove processing is performed, the groove angle and the truncated edge of the pipe end meet the process requirements.
The specifications of main sleeves in the sleeve tee joints are the same as those of the butt-joint pipeline, the groove parameters of the main sleeves and the butt-joint pipeline are also the same, the specifications of branch sleeves and the specifications of the butt-joint pipeline are the same, and the groove parameters of the branch sleeves and the pipe openings are also the same, so that the tee joint and the butt-joint pipeline are suitable for welding and assembling with the same wall thickness and the same groove by adopting full-automatic welding and other methods, the welding efficiency and the welding quality between the sleeve tee joint and the butt-joint steel pipe are favorably improved, and the welding quality problem caused by welding and assembling with different specifications or different wall thicknesses between the existing sleeveless tee joint and the butt-joint steel pipe is reduced.
With reference to the above description, the three-way obtaining step in the embodiment of the present application is described, as shown in fig. 4, obtaining the sleeve three-way includes:
before the tee joint is manufactured, a correct and complete sleeve tee joint manufacturing process file is formulated schematically according to the design technical data and technical requirements of the tee joint, wherein the manufacturing process file comprises at least one of a manufacturing method and a flow of the sleeve tee joint, parameters of materials required for manufacturing the sleeve tee joint, a detection method and parameters in the manufacturing process of the sleeve tee joint, and a pressure resistance test method and parameters of the sleeve tee joint.
The tee joint may be a finished pipe fitting or a pipe fitting processed according to raw materials, schematically, taking the tee joint processed according to raw materials as an example for explanation, as shown in fig. 5, the process of obtaining the tee joint includes:
The tee joint raw material comprises at least one of a seamless steel pipe, a welded steel pipe, a steel plate and a tubular steel billet.
And step 4012, preprocessing the tee joint raw material to obtain a tube blank.
When the tee joint raw material is realized as a steel pipe type material such as a seamless steel pipe, a welded steel pipe and the like, the tee joint raw material is subjected to cutting treatment and/or welding treatment to obtain a pipe blank.
In one example, the cutting blanking is carried out by adopting a flame cutting method, the flame cutting method can be determined according to the outer diameter and the wall thickness of the tee joint raw material, the cutting method comprises at least one of cutting torch cutting and cutting machine cutting, the flame cutting precision is ensured by means of the process parameters, and the specific parameters are customized in the manufacturing process file by a person skilled in the art.
When the three-way raw material is realized as a plate-shaped raw material such as a steel plate, a tubular billet and the like, the three-way raw material is pretreated by at least one of cutting treatment, coiling treatment and welding treatment to obtain a pipe blank.
In one example, a low alloy steel plate is selected as a raw material of the tee joint, the tee joint has good process performance and good weldability, and is suitable for manufacturing the tee joint.
And 4013, performing hot extrusion and drawing forming treatment on the blank to obtain the blank tee joint.
According to the factors such as the category, the steel grade, the wall thickness and the like of the tee joint raw materials, an applicable hot extrusion drawing forming method and equipment are selected, and the specific method and equipment can be obtained from a manufacturing process file.
According to manufacturing process files and technical requirements, marking reference lines, cutting lines and the like on a blank tee joint body, cutting redundant materials of a tee joint main pipe and redundant materials of a tee joint branch pipe on a rotary platform by adopting a flame cutting method, carrying out size and shape inspection on the blank tee joint after the redundant materials are cut, carrying out rounding treatment on a main pipe opening and a branch pipe opening of the blank tee joint by adopting a rounding tool to enable the main pipe opening and the branch pipe opening to reach specified roundness, carrying out heat treatment on the blank tee joint by adopting a combined method of quenching and tempering according to factors such as the type, steel grade and wall thickness of tee joint raw materials, and cleaning oxide skin, iron rust, oil stain, foreign impurities and the like on the surface of the blank tee joint by adopting a combined method of dry spraying and a power tool, so that the surface quality of the blank tee joint meets the technical requirements of appearance inspection, nondestructive inspection and the like.
And 4014, beveling the main pipe orifice and the branch pipe orifice of the blank tee joint, and inspecting the blank tee joint to obtain the tee joint.
And (3) performing groove processing on the main pipe orifice and the branch pipe orifice of the blank tee by using a groove machine, wherein after groove processing is performed, the groove angle and the truncated edge of the pipe end meet the process requirements.
Under the condition of sufficient light, carrying out visual appearance inspection on the blank tee joint; using inspection tools such as a measuring tape, a caliper gauge, a caliper, an ultrasonic measuring instrument and the like to inspect the size and the shape of the blank tee joint, wherein the inspection tools comprise at least one of wall thickness inspection, outer diameter inspection, ovality inspection, length inspection, bending inspection and pipe cross section shape inspection; and (3) carrying out nondestructive testing on the blank tee joint by adopting an ultrasonic, ray, magnetic powder or penetration testing method and equipment. And (4) obtaining the blank tee joint into the tee joint when all technical indexes meet the requirements of the manufacturing process file.
The difference of the raw material of the main tube is schematically illustrated in the embodiment of the present application, and as shown in fig. 6, the obtaining of the main tube comprises:
The raw material of the main pipe and the sleeve pipe are in accordance with the specification of the first butt joint pipeline, illustratively, according to the specification of the butt joint steel pipe of the main pipe orifice of the tee joint, the steel pipe with the same specification as the butt joint steel pipe is selected as the raw material of the main pipe and the sleeve pipe, or the manufacturing process of the steel pipe is selected as the butt joint steel pipe, the steel plate is adopted to carry out cutting, coiling, welding and other combination methods, and the pipe blank of the main pipe and the sleeve pipe is obtained as the raw material of the main pipe and the sleeve pipe.
Step 4022, cutting and blanking the raw material of the main tube sleeve to obtain a blank main tube sleeve.
And cutting and blanking the raw material of the main pipe sleeve by adopting a flame cutting method to manufacture a blank main pipe sleeve.
And (4) groove machining is carried out on the pipe orifice of the blank main pipe sleeve by adopting a groove machine.
The inspection process for the main tube and the sleeve is the same as the inspection process for the tee joint, and is not described herein again.
In step 403, a branch sleeve is obtained.
For the difference of the obtained branch sleeve raw material, which is schematically illustrated in the embodiment of the present application, as shown in fig. 7, the obtaining of the branch sleeve includes:
4031, obtaining the raw material of the branch sleeve.
The raw material of the branch sleeve is consistent with the specification of the second butt joint pipeline, schematically, according to the specification of the butt joint steel pipe at the branch pipe opening of the tee joint, the steel pipe with the same specification as the butt joint steel pipe is selected as the raw material of the branch sleeve, or the manufacturing process same as the butt joint steel pipe is selected, and the combination methods of cutting, coiling, welding and the like are carried out by adopting a steel plate to obtain the pipe blank of the branch sleeve, and the pipe blank is used as the raw material of the branch sleeve.
And step 4032, cutting and blanking the branch sleeve raw material to obtain a blank branch sleeve.
And cutting and blanking the raw materials of the branch pipe sleeve by adopting a flame cutting method to manufacture a blank branch pipe sleeve.
And step 4033, groove machining is carried out on the pipe openings of the blank branch pipe sleeves, and the blank branch pipe sleeves are inspected to obtain the branch pipe sleeves.
And (4) performing groove machining on the pipe openings of the sleeve pipes of the blank branch pipes by adopting a groove machine.
The process for inspecting the branch sleeve is the same as the process for inspecting the tee, and is not described herein.
Illustratively, the steps 401, 402 and 403 are three steps executed in parallel.
In the embodiment of the present application, as shown in fig. 8, obtaining the blank sleeve tee includes:
According to the technological process, the main pipe mouth and main pipe sleeve of the tee joint are respectively welded and assembled, the branch pipe mouth and branch pipe sleeve of the tee joint are welded and assembled, and the tee joint and the branch pipe sleeve of the main pipe sleeve are welded and assembled into a whole to manufacture the blank sleeve tee joint.
In one example, the blank sleeve tee joint has a pipe-making weld, and the main pipe sleeve and the branch pipe sleeve also have pipe-making welds, and the pipe-making welds of the main pipe sleeve and the branch pipe sleeve are staggered at the assembly butt joint, and the weld interval is 150 mm.
Step 4042: and carrying out a pressure test on the blank sleeve tee joint, and determining the pressure test result of the blank sleeve tee joint according to the pressure resistance performance of the blank sleeve tee joint.
Optionally, the pipe orifice of the blank sleeve tee joint is sealed by using a hydraulic test material, a pressure-resistant test device is connected to the blank sleeve tee joint, a pressure-resistant test is performed on the blank sleeve tee joint under preset test parameters, the relevant preset test parameters include, but are not limited to, water pressure and air pressure of a strength test and water pressure and air pressure of a tightness test, after the hydraulic test is completed, the hydraulic test device and an instrument are released and removed, liquid in the blank sleeve tee joint is exhausted and dried, and the sealing materials of the main pipe orifice and the branch pipe orifice of the blank sleeve tee joint are cut off by adopting a flame cutting method.
Step 4043: and (4) performing groove processing on the pipe orifice of the blank sleeve tee joint, and inspecting the blank sleeve tee joint to obtain the sleeve tee joint.
And (3) groove machining is carried out on the main pipe orifice and the branch pipe orifice of the blank sleeve pipe tee by adopting a groove machine, the groove parameters of the main pipe orifice and the branch pipe orifice of the sleeve pipe tee are respectively the same as those of the pipe orifice of the butt joint steel pipe, after the groove machining is finished, the length of the main pipe sleeve is within a first preset length requirement range, and the length of the branch pipe sleeve is within a second preset length requirement range.
The lower limit of the first preset length requirement range and the second preset length requirement range is 200mm, namely the lengths of the main pipe sleeves and the branch pipe sleeves are not less than 200mm, the upper limit can be limited by specific process requirements, but theoretically the upper limit needs to meet the pipeline installation requirements, the pipeline transportation requirements and the like.
The inspection process for the sleeve tee is the same as the inspection process for the tee, and is not described herein again. And (4) if all technical indexes meet the requirements of the manufacturing process file, acquiring the blank sleeve tee joint as the sleeve tee joint. Because the butt joint part of the sleeve tee joint and the butt joint pipeline has the same specification, and the groove forms and the sizes of the pipe orifices are the same, the welding efficiency and the welding quality of the sleeve tee joint and the butt joint pipeline in the welding process can be improved, and the problem of the welding quality caused by the different specifications of the existing sleeve-free tee joint and the butt joint pipeline can be solved.
With reference to the above description, the pressure test method of the blank sleeve tee in the embodiment of the present application is described, as shown in fig. 9, the pressure test method of the blank sleeve tee includes:
Welding and sealing the pipe orifice of the blank sleeve tee joint by adopting at least one sealing material of a pipe cap, an end socket and a blind plate; or, the pipe orifice of the blank sleeve tee joint is mechanically sealed by adopting detachable sealing equipment.
The pipe cap, the end socket and the blind plate are sealing materials for welding and sealing, the pipe cap is generally used for pipelines with small pipe diameters and small pressure, the end socket is generally used for pipelines with large pipe diameters, and the blind plate can be used for pipelines with high pressure and is relatively easy to disassemble.
The pressure test comprises at least one test method of a hydraulic test and a pneumatic test, and the pressure test is used for checking whether the blank sleeve tee joint has a penetrability defect and whether the structural strength meets the requirement.
Schematically, a hydraulic test method is adopted to carry out a pressure test on the blank sleeve tee joint, hydraulic test equipment and instruments are tightly connected to the blank sleeve tee joint, under the conditions of specified test temperature, test pressure, pressurization speed, pressure transmission medium, pressure holding time and the like, the above conditions may be obtained in a process manufacturing file or may be obtained through relevant disclosure, and the like, and in one example, performing hydraulic test on the blank sleeve tee joint, adopting water as a pressure transmission medium, slowly increasing the pressure in the blank sleeve tee joint to the design pressure according to the process requirement, increasing the pressure in the tube to the specified test pressure after confirming no leakage, keeping the pressure in the tube within a first preset time, and then reducing the pressure in the pipe to a preset value, keeping the pressure in the pipe within a second preset time, and checking all welding seams and connecting parts.
The blank sleeve tee joint has no abnormal sound, no visible abnormal deformation and no leakage at the welding line and the connecting part in the test process, so that the pressure resistance test of the blank sleeve tee joint is qualified, and the pressure bearing capacity and the structural safety of the sleeve tee joint are ensured. The sleeve tee joint qualified in the pressure test has the same specification with the butt joint pipeline, and the groove forms and the sizes of the pipe openings of the sleeve tee joint and the butt joint pipeline are the same, so that the welding efficiency and the welding quality of the sleeve tee joint in the welding process of the sleeve tee joint and the butt joint pipeline can be improved, and the problem of the welding quality caused by different specifications between the existing sleeve-free tee joint and the butt joint pipeline can be solved.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method for manufacturing a sleeve tee, the method comprising:
acquiring a tee joint, a main pipe sleeve and a branch pipe sleeve, wherein the tee joint comprises a main pipe orifice and a branch pipe orifice;
connecting the main pipe sleeve with the main pipe port, and connecting the branch pipe sleeve with the branch pipe port to obtain the sleeve tee joint;
the specifications of the main pipe sleeve and the first butt joint pipeline are consistent, and the specifications of the branch pipe sleeve and the second butt joint pipeline are consistent;
performing groove machining on a first pipe orifice of the main pipe sleeve to obtain a first groove pipe orifice, wherein groove parameters of the first groove pipe orifice are the same as those of the first butt joint pipe;
and performing groove machining on the first pipe orifice of the branch pipe sleeve to obtain a second groove pipe orifice, wherein groove parameters of the second groove pipe orifice are the same as those of the second butt joint pipeline, and the groove parameters comprise groove form and size.
2. The method of claim 1, wherein said connecting said main tube cuff to said main port comprises:
connecting the second pipe orifice of the main pipe sleeve with the main pipe orifice in a welding connection mode;
the connecting the branch sleeve with the branch opening comprises:
and connecting the second pipe orifice of the branch pipe sleeve with the branch pipe orifice in a welding connection mode.
3. The method of claim 1,
the length of the main pipe sleeve is within a first preset length requirement range;
the length of the branch pipe sleeve is within a second preset length requirement range.
4. The method of claim 1, wherein the gauge comprises at least one of steel pipe type, pipe grade, steel grade, pipe diameter, wall thickness, delivery condition.
5. The method of claim 1, wherein the obtaining a tee comprises:
obtaining tee joint raw materials;
pretreating the tee joint raw material to obtain a pipe blank;
carrying out hot extrusion drawing forming treatment on the tube blank to obtain a blank tee joint;
and performing groove machining on the main pipe orifice and the branch pipe orifice of the blank tee joint, and inspecting the blank tee joint to obtain the tee joint.
6. The method of claim 1, wherein said obtaining a primary cuff comprises:
obtaining a main pipe and sleeve raw material;
cutting and blanking the main pipe sleeve raw material to obtain a blank main pipe sleeve;
and performing groove processing on the blank main pipe sleeve, and inspecting the blank main pipe sleeve to obtain the main pipe sleeve.
7. The method of claim 1, wherein said obtaining a branch sleeve comprises:
obtaining a branch pipe sleeve raw material;
cutting and blanking the raw material of the branch pipe sleeve to obtain a blank branch pipe sleeve;
and performing groove processing on the blank branch pipe sleeve, and inspecting the blank branch pipe sleeve to obtain the branch pipe sleeve.
8. The method of claim 1, wherein said obtaining a sleeve tee comprises:
obtaining a blank sleeve tee joint, wherein the blank sleeve tee joint is obtained by welding and assembling a tee joint, a main pipe sleeve and a branch pipe sleeve;
carrying out a pressure test on the blank sleeve tee;
and inspecting the blank sleeve tee joint to obtain the sleeve tee joint.
9. The method of claim 8, wherein said performing a pressure test on said blank sleeve tee comprises:
sealing the pipe orifice of the blank sleeve tee;
connecting pressure-resistant test equipment to the blank sleeve tee joint, and performing pressure-resistant test on the blank sleeve tee joint under preset test parameters;
and determining the pressure resistance test result of the blank sleeve tee joint according to the pressure resistance performance of the blank sleeve tee joint.
10. The method of claim 9, wherein said sealing the mouth of said blank sleeve tee comprises:
welding and sealing the pipe orifice of the blank sleeve tee joint by adopting at least one sealing material of a pipe cap, an end socket and a blind plate;
or the like, or, alternatively,
and mechanically sealing the pipe orifice of the blank sleeve tee joint by adopting detachable sealing equipment.
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| CN202010924145.6A CN114131226B (en) | 2020-09-04 | 2020-09-04 | Manufacturing method of tee joint |
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| CN202010924145.6A CN114131226B (en) | 2020-09-04 | 2020-09-04 | Manufacturing method of tee joint |
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| CN114131226B CN114131226B (en) | 2023-08-22 |
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| WO2017004671A1 (en) * | 2015-07-03 | 2017-01-12 | Vinidex Pty Limited | A pipe tee for pressure pipe |
| CN110220064A (en) * | 2019-06-24 | 2019-09-10 | 江苏云皓塑料管件有限公司 | A kind of pipe connecting structure |
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| GB2088513A (en) * | 1980-11-27 | 1982-06-09 | Snam Progetti | Pipe for use as part of a pipeline |
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| JPH02127392U (en) * | 1989-03-31 | 1990-10-19 | ||
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114131226B (en) | 2023-08-22 |
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