CN114427620A - Pipeline connection method for temporary water use - Google Patents
Pipeline connection method for temporary water use Download PDFInfo
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- CN114427620A CN114427620A CN202210035706.6A CN202210035706A CN114427620A CN 114427620 A CN114427620 A CN 114427620A CN 202210035706 A CN202210035706 A CN 202210035706A CN 114427620 A CN114427620 A CN 114427620A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 33
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000005536 corrosion prevention Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 51
- 238000013461 design Methods 0.000 claims description 6
- 238000010422 painting Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011295 pitch Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000009435 building construction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/0243—Laying or reclaiming pipes on land, e.g. above the ground above ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention belongs to the technical field of pipeline connection, and particularly relates to a pipeline connection method for temporary water utilization, which comprises the following steps: s1: preparation work before installation; s2: reserving holes at the actual installation positions; s3: prefabricating and processing according to a drawing; s4: mounting the clamping frame at the actual mounting position; s5: mounting a prefabricated pipeline; s6: pressure testing and corrosion prevention; through the planning of step S1 to step S7 to interim water pipe connection mode and the concrete operation mode of pipe connection for when carrying out interim water pipe connection, can be abundant take into account subsequent water problem, avoid the random overlap joint of pipeline and the problem emergence of the pipeline junction seepage phenomenon and the pipeline connection mistake that arouse of pipeline.
Description
Technical Field
The invention belongs to the technical field of pipeline connection, and particularly relates to a pipeline connection method for temporary water utilization.
Background
The water pipe is a pipeline for supplying water, with the development of modern economy, buildings in various regions stand, and water is indispensable in building construction, so that the arrangement of the water pipe needs to be considered in the construction process.
The water pipe often need be supplied water at the water pipe position of reserving in the work progress interim overlap joint water pipe to this satisfies the building construction needs.
In the existing building construction process, the temporary pipeline connection mode is only limited to the lapping on the existing pipeline foundation, so that the integral consideration of pipeline connection is lacked, and the problems of water seepage, disordered pipeline connection and the like easily occur to the connection between pipelines when water is used in the later period; therefore, the invention provides a pipeline connection method for temporarily using water.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that in the existing building construction process, the pipeline connection mode for temporary water use is only limited to lap joint on the existing pipeline foundation, so that the overall consideration on pipeline connection is lacked, and the problems that water seepage easily occurs to the connection between pipelines, the pipeline connection is disordered and the like during later water use are caused.
The technical scheme adopted by the invention for solving the technical problems is as follows: a pipe connection method for temporary water use, comprising the steps of:
s1: preparation work before installation;
s2: reserving a hole at the actual installation position;
s3: prefabricating and processing according to drawings;
s4: mounting the clamping frame at the actual mounting position;
s5: mounting a prefabricated pipeline;
s6: pressure testing and corrosion prevention.
As an implementation mode of the present invention, in S3, the prefabrication process refers to recording a rough drawing of the pipeline branch, the pipe diameter, the reducing diameter, the reserved pipe orifice and the valve position related to the drawing, marking the actual installation position, measuring the accurate size of the actual installation according to the marked sections, recording the accurate size in the construction rough drawing, prefabricating according to the actual size measured by the rough drawing, and simultaneously ensuring that the prefabricated pipeline has smooth cut and no burr, and cleaning the connection part of the pipe and the pipe fitting.
In step S3, the prefabricated pipeline is required to be performed strictly according to welding procedures, including the welding of fire-fighting pipelines, the welding of pipes and flanges, the welding of thick-wall large-diameter pipe orifices, and the welding of pressure pipelines, and after the prefabricated pipeline is welded, the welded orifices need to be cleaned, and the assembly of the pipeline butt-welded orifices needs to have flush inner walls, and the misalignment of the inner walls cannot exceed the standard.
In an embodiment of the present invention, in S3, flange welding refers to installation of a flange connection valve; the mounting of the flange connection valve needs to ensure that the flange surfaces of the valve and the piping are not damaged and scratched and simultaneously ensure cleanness, the perpendicularity between the flange surface on the piping and the central line of the piping and the error of a flange bolt hole are within an allowable value range, and simultaneously, when two flanges are connected, the flange sealing surface and a gasket are ensured to be uniformly pressed; the prefabricated pipeline connection needs to ensure that strong force is not needed for opening, a spanner matched with a nut needs to be used when a bolt is fastened, force is not uniform in fastening of a flange, and the flange is screwed in a symmetrical and crossed direction sequence.
In the present invention, it is preferable that the bolt is fastened so that all the bolts and nuts are uniformly secured, and the bolts and nuts used are required to be in accordance with the specification, and the bolt head after fastening should be exposed from the nut by two pitches.
In an embodiment of the present invention, in S4, the clamp frame includes a riser bracket and a cross tube hanger; when the height of the stand pipe support is not more than five meters, one stand pipe support must be installed, when the height is more than five meters, the number of the stand pipe supports is not less than two, and when no branch pipe is connected to the stand pipe, the installation height of the support is preferably 1.20-1.60 meters away from the ground; one transverse pipe hanger is required to be arranged on each linear pipe section, and the distance between every two adjacent transverse pipe hangers on each linear pipe section is not larger than a specified value; the horizontal pipe hanger is arranged at the joint, and the net distance between the horizontal pipe hanger and the joint is not less than 150 mm and not more than 300 mm.
As an embodiment of the present invention, in S5, the installation of the prefabricated pipe requires that the installation order principle of the underground pipe and the underground pipe, the large pipe and the small pipe, the high-pressure pipe and the low-pressure pipe, and the jacketed pipe and the single pipe is performed; the pipeline is required to be gradually inspected for pipeline components and to check, debug and verify that the pipeline hangers and support are installed according to design or specification requirements before installation.
In S6, before painting, the pipe is required to be free of dust, dirt, rust, and welding slag, and the painting is especially uniform in thickness, and should not be peeled, foamed, flowed, or leaked, and the pipe can be insulated after passing the pressure test, and the insulation thickness should meet the design requirement.
The invention has the technical effects and advantages that:
according to the temporary water pipeline connection method provided by the invention, the temporary water pipeline connection mode and the concrete operation mode of pipeline connection are planned through the steps from S1 to S7, so that the subsequent water utilization problem can be fully considered when the temporary water pipeline is connected, and the problems of water seepage at the pipeline connection position and pipeline connection dislocation caused by random overlapping of pipelines are avoided.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a connection method in the present invention;
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, the method for temporarily connecting pipes by using water according to the present invention comprises the steps of:
s1: preparing before installation;
s2: reserving holes at the actual installation positions;
s3: prefabricating and processing according to drawings;
s4: mounting the clamping frame at the actual mounting position;
s5: mounting a prefabricated pipeline;
s6: pressure testing and corrosion prevention.
As an implementation mode of the present invention, in S3, the prefabrication process refers to recording a rough drawing of the pipeline branch, the pipe diameter, the reducing diameter, the reserved pipe orifice and the valve position related to the drawing, marking the actual installation position, measuring the accurate size of the actual installation according to the marked sections, recording the accurate size in the construction rough drawing, prefabricating according to the actual size measured by the rough drawing, and simultaneously ensuring that the prefabricated pipeline has smooth cut and no burr, and cleaning the connection part of the pipe and the pipe fitting.
Particularly, the quality of the joint can be prevented from being damaged by sand and dust when the connecting parts of the pipe and the pipe are cleaned.
In step S3, the prefabricated pipeline is required to be performed strictly according to welding procedures, including the welding of fire-fighting pipelines, the welding of pipes and flanges, the welding of thick-wall large-diameter pipe orifices, and the welding of pressure pipelines, and after the prefabricated pipeline is welded, the welded orifices need to be cleaned, and the assembly of the pipeline butt-welded orifices needs to have flush inner walls, and the misalignment of the inner walls cannot exceed the standard.
Specifically, a 1: the fire-fighting pipeline is welded by adopting welded steel pipes, and wind-proof and rain-proof measures are adopted during welding; the welding of the general pipeline is in butt joint type and team, and the electric welding is in accordance with the following regulation:
note: if the butt joint of the pipes with the delta being more than or equal to 5mm can ensure the complete welding, the groove opening is not required.
a 2: when the pipe is connected with the flange, the pipe is firstly inserted into the flange, and welded after spot welding for 2-3 points and alignment and leveling by using the angle square.
a 3: the welding of the thick-wall large-diameter pipe orifice adopts multilayer multi-pass welding, and when multilayer multi-pass welding seams are formed, the secondary layer can be welded after the inspection is carried out layer by layer until the welding is finished.
a 4: the appearance of the welding seam is well formed and is in smooth transition; the width of the welding line is preferably 2mm more than the edge of the groove on each side, and the surface of the welding line is not lower than the surface of the welding line on the surface of the base metal, so that the defects of cracks, unfused fusion, pores, slag inclusion, splashing and the like are not allowed to exist.
a 5: and (3) well cleaning the welded junctions of the prefabricated pipelines, cleaning the interiors of the tube chambers, sealing the tube orifices, and classifying and neatly placing the tube orifices.
a 6: the assembly of the butt welding seams of the pipelines must be realized by leveling the inner walls, and the misalignment of the inner walls cannot exceed the standard; the pipe group is subjected to spot welding by a welder who welds the same pipe, a welding rod or a welding wire for spot welding is the same as that used for formal welding, the spot welding length is 10-15mm, the height is 2-4mm, and the spot welding length is greater than 2/3 of the pipe wall thickness; the surface of the pipeline welding line has no defects of cracks, pores, slag inclusion and the like;
a 7: when the pipeline is connected, the opening of the pipeline cannot be aligned by force, and particularly when the bolt is loosened from the equipment connecting part, the opening aligning part is in the correct position. The butt weld or flange interface on the pipeline must avoid coinciding with the support and hanger.
In an embodiment of the present invention, in S3, flange welding refers to installation of a flange connection valve; the mounting of the flange connection valve needs to ensure that the flange surfaces of the valve and the piping are not damaged and scratched and simultaneously ensure cleanness, the perpendicularity between the flange surface on the piping and the central line of the piping and the error of a flange bolt hole are within an allowable value range, and simultaneously, when two flanges are connected, the flange sealing surface and a gasket are ensured to be uniformly pressed; the prefabricated pipeline connection needs to ensure that strong force is not needed for opening, a spanner matched with a nut needs to be used when a bolt is fastened, force is not uniform in fastening of a flange, and the flange is screwed in a symmetrical and crossed direction sequence.
Specifically, when a metal gasket (with an oval or octagonal cross section) is used, the notch of the flange plate is matched with the gasket, and red lead is coated for matching grinding to ensure that the sealing state is good.
In the present invention, it is preferable that the bolt is fastened so that all the bolts and nuts are uniformly secured, and the bolts and nuts used are required to be in accordance with the specification, and the bolt head after fastening should be exposed from the nut by two pitches.
Specifically, the fastening of the bolt and the nut uses a washer in order to prevent the loosening caused by vibration.
In an embodiment of the present invention, in S4, the clamp frame includes a riser bracket and a cross tube hanger; when the height of the stand pipe support is not more than five meters, one stand pipe support must be installed, when the height is more than five meters, the number of the stand pipe supports is not less than two, and when no branch pipe is connected to the stand pipe, the installation height of the support is preferably 1.20-1.60 meters away from the ground; one transverse pipe hanger is required to be arranged on each linear pipe section, and the distance between every two adjacent transverse pipe hangers on each linear pipe section is not larger than a specified value; the horizontal pipe hanger is arranged at the joint, and the net distance between the horizontal pipe hanger and the joint is not less than 150 mm and not more than 300 mm.
Specifically, the specified values of the distance between two adjacent hangers are as follows:
specifically, in the pipeline system, the water inlet vertical pipe is arranged at the bottom of the water inlet vertical pipe; the position of the vertical pipe, which needs to support the weight of the vertical pipe because of long free length; the parts of the horizontal pipe outlet branch pipe connected with pipe fittings such as a branch pipe joint, a tee joint, a four-way joint, an elbow and the like are provided with fixed brackets; when the pipeline is installed, the support (hanging) frame should be fixed and adjusted in time, and a temporary support (hanging) frame is not suitable for use; the support (hanging) frame is tightly contacted with the pipe, and a facility for preventing the pipe from falling off is provided; meanwhile, holes are drilled in the support in advance for fixing the pipe clamp, and the holes are not allowed to be drilled by electric welding or gas cutting.
As an embodiment of the present invention, in S5, the installation of the prefabricated pipe requires that the installation order principle of the underground pipe and the underground pipe, the large pipe and the small pipe, the high-pressure pipe and the low-pressure pipe, and the jacketed pipe and the single pipe is performed; the pipeline is gradually inspected for its components and the installation of the pipeline hangers and commissioned and checked for compliance with design or code requirements before installation.
Specifically, the pipeline installation is carried out according to a pipeline plane layout diagram and a single line diagram, and attention is paid to elevation, medium flow direction, support and hanger type and position, gradient value, pretension value, pipeline material and installation direction of a valve, and the technical requirements on the diagram cannot be changed without consent;
the pipeline connected with the power equipment is preferably installed from one side of the equipment, and a pipeline bracket is installed before the pipeline is installed; the pipeline cannot be installed strongly, and the weight and additional moment of the pipeline, the valve and the like cannot act on equipment; when the pipeline is installed, a temporary support hanger is not allowed to be adopted, iron wires, stones and the like are not used as the temporary support hanger, and a formal support hanger is installed as early as possible; the welding requirements of the support and hanger are the same as those of the pipeline, the welding bead is full, and after the welding is finished and the welding is qualified through the inspection of an inspector, the pipeline can be installed; the rows of pipelines are arranged, the straight line parts are mutually parallel, and the curvature radii of the curved line parts are equal; the laying of various pipelines should follow the principle of cross priority;
when the pipeline is stopped in installation, the opening is reliably sealed, the galvanized steel pipe is sealed by a screwed plug, and the welded pipe is sealed by a flange blind plate; hinging the cut pipe orifice, and checking whether an object exists in the pipeline before the bracket is ready for installing the pipeline; the flange plate is welded inside and outside, the directions of bolts are kept consistent when the flange is assembled, and the exposed length of the bolts is equal to the diameter of 1/2 bolts after fastening; the pipe is provided with a sleeve at the position of the pipe penetrating the wall and the floor slab; the pipeline joint is not anticorrosive after being welded, and is subjected to anticorrosive treatment after the pressure test is qualified.
In S6, before painting the pipeline, it is necessary to ensure that the joint surface is free of dust, dirt, rust spots and welding slag, and the painting is especially uniform in thickness, and should not have peeling, bubbling, flowing and missing coating phenomena, and the pipeline can be insulated after passing the pressure test, and the insulation thickness should meet the design requirements.
Specifically, after derusting the buried part, the bottom oil is externally brushed and the asphalt paint is externally brushed and cooled.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A method for connecting a temporary water pipeline is characterized in that: the method comprises the following steps:
s1: preparing before installation;
s2: reserving holes at the actual installation positions;
s3: prefabricating and processing according to a drawing;
s4: mounting the clamping frame at the actual mounting position;
s5: mounting a prefabricated pipeline;
s6: pressure testing and corrosion prevention.
2. A pipe connection method for temporary use of water according to claim 1, wherein: in the step S3, prefabricating and processing refers to marking an actual installation position according to a draft of a pipeline shunt, a pipe diameter, a reducing diameter, a reserved pipe orifice and a valve position related to the relevant records of a drawing, measuring an accurate size of actual installation according to the marked sections, recording the accurate size in a construction draft, prefabricating and processing according to the actual size measured by the draft, ensuring that the cut of the prefabricated pipeline is smooth and free of burrs, and cleaning the connection part of the pipe and the pipe fitting.
3. A pipe connection method for temporary use of water according to claim 2, wherein: in S3, the prefabricated pipeline is required to be strictly executed according to welding process rules, the welding process includes the welding of a fire-fighting pipeline, the welding of a pipe and a flange, the welding of a thick-wall large-diameter pipe orifice and the welding of a pressure pipeline, the welding port needs to be cleaned after the prefabricated pipeline is welded, the inner wall of a pipeline butt welding port needs to be flush, and the inner wall misalignment can not exceed the standard.
4. A pipe connection method for temporary use of water according to claim 3, wherein: in the step S3, flange welding refers to installation of a flange connection valve; the mounting of the flange connection valve needs to ensure that the flange surfaces of the valve and the piping are not damaged and scratched and simultaneously ensure cleanness, the perpendicularity between the flange surface on the piping and the central line of the piping and the error of a flange bolt hole are within an allowable value range, and simultaneously, when two flanges are connected, the flange sealing surface and a gasket are ensured to be uniformly pressed; the prefabricated pipeline connection needs to ensure that strong force is not needed for opening, a spanner matched with a nut needs to be used when a bolt is fastened, force is not uniform in fastening of a flange, and the flange is screwed in a symmetrical and crossed direction sequence.
5. The pipe connection method for temporary use of water according to claim 4, wherein: after the bolt is connected, all the bolts and nuts need to be ensured to be firm and uniform, the bolts and the nuts used need to meet the requirements, and the bolt heads after being fastened should be exposed out of the nuts by two screw pitches.
6. A pipe connection method for temporary use of water according to claim 5, wherein: in the step S4, the clamp bracket includes a riser bracket and a cross tube hanger; when the height of the stand pipe support is not more than five meters, one stand pipe support must be installed, when the height is more than five meters, the number of the stand pipe supports is not less than two, and when no branch pipe is connected to the stand pipe, the installation height of the support is preferably 1.20-1.60 meters away from the ground; one transverse pipe hanger is required to be arranged on each linear pipe section, and the distance between every two adjacent transverse pipe hangers on each linear pipe section is not larger than a specified value; the horizontal pipe hanger is arranged at the joint, and the net distance between the horizontal pipe hanger and the joint is not less than 150 mm and not more than 300 mm.
7. A pipe connection method for temporary use of water according to claim 6, wherein: in the step S5, the installation of the prefabricated pipe needs to be performed according to the installation sequence principle of the underground pipe and the underground pipe, the large pipe and the small pipe, the high-pressure pipe and the low-pressure pipe, and the jacketed pipe and the single pipe; the pipeline is required to be gradually inspected for pipeline components and to check, debug and verify that the pipeline hangers and support are installed according to design or specification requirements before installation.
8. A pipe connection method for temporary use of water according to claim 7, wherein: in the step S6, before painting, the pipe is required to be free of dust, dirt, rust spots and welding slag, the painting is particularly required to be uniform in thickness, and should not be peeled, foamed, flowed and leaked, and the pipe can be insulated after the pressure test is qualified, and the insulation thickness is required to meet the design requirement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210035706.6A CN114427620A (en) | 2022-01-13 | 2022-01-13 | Pipeline connection method for temporary water use |
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| CN202210035706.6A CN114427620A (en) | 2022-01-13 | 2022-01-13 | Pipeline connection method for temporary water use |
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| CN114427620A true CN114427620A (en) | 2022-05-03 |
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Cited By (1)
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| CN115111429A (en) * | 2022-06-15 | 2022-09-27 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Installation process method of water-cooled complex pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111429A (en) * | 2022-06-15 | 2022-09-27 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Installation process method of water-cooled complex pipeline |
| CN115111429B (en) * | 2022-06-15 | 2024-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Mounting process method of water-cooling complex pipeline |
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Application publication date: 20220503 |