CN114838199A - PVC building water supply pipe installation construction process - Google Patents
PVC building water supply pipe installation construction process Download PDFInfo
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- CN114838199A CN114838199A CN202210600990.7A CN202210600990A CN114838199A CN 114838199 A CN114838199 A CN 114838199A CN 202210600990 A CN202210600990 A CN 202210600990A CN 114838199 A CN114838199 A CN 114838199A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000009434 installation Methods 0.000 title claims abstract description 59
- 238000010276 construction Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000013461 design Methods 0.000 claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 11
- 238000005536 corrosion prevention Methods 0.000 claims abstract description 5
- 238000011010 flushing procedure Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000004321 preservation Methods 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 28
- 239000004800 polyvinyl chloride Substances 0.000 claims description 28
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 4
- 238000009417 prefabrication Methods 0.000 claims description 4
- 238000011160 research Methods 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 3
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 235000009120 camo Nutrition 0.000 claims description 3
- 235000005607 chanvre indien Nutrition 0.000 claims description 3
- 239000011487 hemp Substances 0.000 claims description 3
- 230000009897 systematic effect Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000011900 installation process Methods 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 239000000314 lubricant Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 235000014121 butter Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- -1 fatty acid salt Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 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
-
- 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
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
Abstract
The invention belongs to the field of PVC building water supply pipe installation, and particularly relates to a PVC building water supply pipe installation construction process, which comprises the following steps: installation preparation: checking a design drawing, checking whether the coordinate elevations of the pipelines are crossed or not and whether the occupied space of the pipeline arrangement is reasonable or not, checking materials required by construction, and excavating grooves required by pipeline installation; the second step is that: prefabricating and processing: drawing construction sketches such as pipeline branches, pipe diameters, reserved pipe orifices, valve positions and the like according to a design drawing, and marking the structure position of actual installation; the third step: carrying out main pipe installation, vertical pipe installation and branch pipe installation in sequence; the fourth step: testing pressure of the pipeline, corrosion prevention and heat preservation of the pipeline and flushing of the pipeline; the fifth step: and (3) water passing test: and (3) simultaneously starting the maximum number of water distribution points according to the design requirement, observing whether the rated flow can be reached, and realizing the function of standardizing the installation process of the PVC water supply pipe through the construction process from the first step to the fifth step.
Description
Technical Field
The invention relates to the field of PVC building water supply pipe installation, in particular to a PVC building water supply pipe installation construction process.
Background
The building water supply pipe is a water pipe for supplying water for residents in a building, and the PVC building water supply pipe is made of PVC materials.
At present, when a PVC building water supply pipe is installed, workers mainly install the PVC building water supply pipe according to the situation on the spot.
When the PVC building water supply pipes are installed, the situation that the connection parts between the water supply pipes are easy to leak or the pipes have large deviation and cannot be connected due to irregular installation is easily caused; therefore, the PVC building water supply pipe installation construction process is provided for solving the problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a PVC building water supply pipe installation construction process, which solves the problems that leakage occurs at the joint between water supply pipes or the connection cannot be realized due to large deviation between pipelines because of irregular installation when the PVC building water supply pipes are installed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a PVC building water supply pipe installation construction process, which comprises the following steps:
s1: installation preparation: checking a design drawing, checking whether the coordinate elevations of the pipelines are crossed or not, checking whether the occupied space of the pipeline arrangement is reasonable or not, if the problem is solved in time with the research and the solution of the design and related personnel, handling the change and the trade-agreement records, preparing according to the construction method determined by the construction scheme, checking materials required by construction, and excavating a groove required by pipeline installation;
s2: prefabricating and processing: drawing construction sketches of pipeline branches, pipe diameters, reserved pipe orifices, valve positions and the like according to a design drawing, marking the structure position of actual installation, measuring the standard size of the actual installation in sections according to the marks, recording the standard size on the construction sketches, and performing prefabrication according to the size measured by the sketches;
s3: carrying out main pipe installation, vertical pipe installation and branch pipe installation in sequence;
s4: testing pressure of the pipeline, corrosion prevention and heat preservation of the pipeline and flushing of the pipeline;
s5: and (3) water passing test: and simultaneously starting a maximum number of water distribution points according to design requirements, and observing whether the rated flow can be reached.
Preferably, in S1, after the trench is excavated, the elevation of the excavated trench and the quality of the pipeline foundation are checked, and the pipeline is only laid after the elevation of the excavated trench and the quality of the pipeline foundation are qualified.
Preferably, in S1, the material required for construction is inspected for construction pipes, tubes, rubber rings, and adhesives, and the material is used after the material is determined to be acceptable.
Preferably, in S3, the following matters should be noted when the pipe is installed:
a1: placing the pipe into a groove, a connector, partially backfilling, testing pressure and completely backfilling, wherein 3 pipelines can be stably placed into the groove after being connected on the groove only under the conditions that the conditions are not allowed and the pipe diameter is not large;
a2: water supply pipelines are paved in the grooves, if a foundation made of other materials is not designed, the water supply pipelines are generally paved on undisturbed original soil, and after the pipelines are installed, cushion blocks used in the process of paving the pipelines are removed in time;
a3: when the pipe is lifted and placed into a ditch, a reliable soft belt lifting appliance is adopted to stably drop into the ditch, and the pipe does not collide with the ditch wall or the ditch bottom violently;
a4: when a rigid interface pipeline is constructed in a region with large day and night temperature difference change, measures are taken to prevent the pipeline and the interface from being damaged due to stress generated by the temperature difference, the bonding interface generally cannot be constructed below 5 ℃, and the rubber ring interface cannot be constructed below-10 ℃;
a5: when installing valves and pipe fittings of interfaces of the flange, measures for preventing external tension pressure from being caused are taken, and buttresses are arranged below the valves with the calibers larger than 100 mm;
a6: when the pipeline installation and laying work is interrupted, the pipe orifice is closed by using a wooden plug or other blocking plug. And impurities are prevented from entering.
Preferably, in S3, when the pipeline is installed, it should be noted whether thrust buttresses are disposed at the tee joint and the elbow where the pipeline turns, the buttresses of the pipeline should not be built on the loose soil, and the back of the pipeline should be close to the thick soil, if unconditional, measures should be taken to ensure the stability of the buttresses, and a rubber sheet cushion is disposed between the buttresses and the pipeline to prevent the pipeline from being damaged.
Preferably, in S3, when the pipeline is installed, the curvature radius of the pipeline bend should not be greater than 300 times of the pipe diameter, a preformed hole or a sleeve should be provided at the pipeline wall-through position, the pipeline should not have an interface within the sleeve, and the pipeline and the sleeve are filled with hemp.
Preferably, in S3, when the pipes are connected, the pipes may adopt a rubber ring joint (RR connection), an adhesive joint (T-S connection), a flange connection, and the like, where the rubber ring joint is suitable for the pipes with an outer diameter of 63-315mm, the adhesive joint is only suitable for the pipes with an outer diameter of less than 160mm, and the flange connection is generally used for connecting a rigid polyvinyl chloride pipe with a cast iron pipe or other pipes.
Preferably, the step S6 is performed in a systematic and sectional manner when a water test is performed, the tests are performed separately by using the vertical pipes, the water distribution point 1/3 is opened for each layer of water distribution branch pipe, the throttle is opened to the limit, the flow rate of the water flow is observed, the impact force of the water flow on the palm is sensed by hand, and the flow is proper if the impact force causes slight stabbing pain to the palm.
The invention has the advantages that:
1. according to the invention, through the step of S1-5, the function of standardizing the installation process of the PVC water supply pipes is realized, the problem that the connection parts between the water supply pipes are easy to leak or the pipes have large deviation and cannot be connected due to irregular installation when the PVC building water supply pipes are installed at present is solved, and the problem that the connection parts between the water supply pipes leak or the pipes have large deviation and cannot be connected due to random operation of workers is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a PVC building water supply pipe installation and construction process includes the following steps:
s1: installation preparation: checking a design drawing, checking whether the coordinate elevations of the pipelines are crossed or not, checking whether the occupied space of the pipeline arrangement is reasonable or not, if the problem is solved in time with the research and the solution of the design and related personnel, handling the change and the trade-agreement records, preparing according to the construction method determined by the construction scheme, checking materials required by construction, and excavating a groove required by pipeline installation;
s2: prefabricating and processing: drawing construction sketches of pipeline branches, pipe diameters, reserved pipe orifices, valve positions and the like according to a design drawing, marking the structure position of actual installation, measuring the standard size of the actual installation in sections according to the marks, recording the standard size on the construction sketches, and performing prefabrication according to the size measured by the sketches;
s3: carrying out main pipe installation, vertical pipe installation and branch pipe installation in sequence;
s4: testing pressure of the pipeline, corrosion prevention and heat preservation of the pipeline and flushing of the pipeline;
s5: and (3) water passing test: and simultaneously starting a maximum number of water distribution points according to design requirements, and observing whether the rated flow can be reached.
Further, in S1, after the trench is excavated, the elevation of the excavated trench and the quality of the pipeline foundation are checked, and the pipeline can be laid only after the trench is qualified.
Further, in S1, the materials required for construction are inspected for pipes, rubber rings, and adhesives for construction, and the materials can be used after the materials are determined to be acceptable.
Further, in S3, the following matters should be noted when the pipe is installed:
a1: placing the pipe into a groove, a connector, partially backfilling, testing pressure and completely backfilling, wherein 3 pipelines can be stably placed into the groove after being connected on the groove only under the conditions that the conditions are not allowed and the pipe diameter is not large;
a2: water supply pipelines are paved in the grooves, if a foundation made of other materials is not designed, the water supply pipelines are generally paved on undisturbed original soil, and after the pipelines are installed, cushion blocks used in the process of paving the pipelines are removed in time;
a3: when the pipe is lifted and placed into a ditch, a reliable soft belt lifting appliance is adopted to stably drop into the ditch, and the pipe does not collide with the ditch wall or the ditch bottom violently;
a4: when a rigid interface pipeline is constructed in a region with large day and night temperature difference change, measures are taken to prevent the pipeline and the interface from being damaged due to stress generated by the temperature difference, the bonding interface generally cannot be constructed below 5 ℃, and the rubber ring interface cannot be constructed below-10 ℃;
a5: when installing valves and pipe fittings of interfaces of the flange, measures for preventing external tension pressure from being caused are taken, and buttresses are arranged below the valves with the calibers larger than 100 mm;
a6: when the pipeline installation and laying work is interrupted, the pipe orifice is closed by using a wooden plug or other blocking plug. And impurities are prevented from entering.
Furthermore, in S3, when the pipeline is installed, it should be noted whether thrust buttresses are disposed at the tee joint and the elbow where the pipeline turns, the buttresses of the pipeline should not be built on the loose soil, and the back of the pipe should be close to the thick soil, if unconditional, measures should be taken to ensure the stability of the buttresses, and a rubber sheet cushion should be disposed between the buttresses and the pipeline to prevent the pipeline from being damaged.
Further, in S3, when the pipeline is installed, the curvature radius of the pipeline should not be larger than 300 times of the pipe diameter, a preformed hole or a sleeve should be provided at the pipeline wall-through position, the pipeline should not have an interface within the sleeve, and the pipeline and the sleeve are filled with oil hemp.
Furthermore, in the step S3, when the pipes are connected, the pipes may adopt a rubber ring joint (RR connection), an adhesive joint (T-S connection), a flange connection, and the like, the rubber ring joint is suitable for the pipes with an outer diameter of 63-315mm, the adhesive joint is only suitable for the pipes with an outer diameter of less than 160mm, and the flange connection is generally used for the connection of a rigid polyvinyl chloride pipe with a cast iron pipe or other pipes;
during operation, the pipeline rubber ring is connected
a. Cleaning the groove, the end face and the rubber ring of the rubber ring in the socket, and avoiding soil or other impurities;
b. the rubber ring is correctly arranged in the groove of the rubber ring of the socket, so that the rubber ring cannot be reversely or distorted, and the rubber ring can be soaked by water firstly for convenient installation, but the rubber ring cannot be coated with a lubricant;
c. when the pipe connected with the rubber ring is cut off in construction, a chamfer needs to be additionally formed at the socket end, an insertion length marking line needs to be marked, then connection is carried out, the minimum insertion length is shown in a table 2, and when the pipe is cut off, the fracture is guaranteed to be flat and perpendicular to the axis of the pipe.
Minimum insertion length table 2
Uniformly coating the lubricant on the outer surfaces of the rubber ring at the socket and the spigot end of the pipe by using a brush, but not coating the lubricant in the groove of the rubber ring at the socket; the lubricant can be fatty acid salt, and butter or other oils are prohibited from being used as the lubricant;
aligning the socket of the connected pipeline with the socket, keeping the inserted pipe section straight, inserting the pipe to the marked line by a hand-operated block or other pulling machines at one time, if the insertion resistance is too large, not forcibly inserting, pulling out and reinserting to prevent the rubber ring from being distorted;
inserting a feeler gauge along the gap of the bell mouth, and checking whether the rubber ring is normally installed along the circumference of the pipe;
pipe bonding connection
a. When the pipelines connected in a bonding way are cut off in construction, the inserting ports need to be chamfered and filed into grooves for connection; when the pipe is cut off, the fracture is ensured to be flat and perpendicular to the axis of the pipe, and the processed groove has the length of generally not less than 3mm and the thickness of 1/3-1/2 of the thickness of the pipe wall; after the groove is filed, the scraps are cleaned;
b. before the pipe or the pipe fitting is bonded, the inner side of a socket and the outer side of a socket are wiped clean by cotton yarn or dry cloth, so that the bonded surface is kept clean, dust sand and water are avoided, and when oil stains are stained on the surface, the pipe or the pipe fitting needs to be wiped clean by cotton yarn dipped with cleaning agents such as acetone and the like;
c. before bonding, trial inserting two pipes once to ensure that the insertion depth and the matching condition meet the requirements, marking the depth of the pipe end inserted into the socket on the insertion end surface, wherein the depth of the pipe end inserted into the socket is not less than the specification of a table 3;
d. when the adhesive is quickly coated on the combining surfaces of the outer side of the spigot and the inner side of the socket by using a brush, the socket is coated firstly and then the spigot is coated, the axial coating is suitable, the coating is uniform and appropriate, and the using amount of the adhesive of each spigot is shown in table 4;
e. after the bell and spigot is coated with the adhesive, the pipe end is inserted into the bell mouth in the direction of alignment immediately, the pipe end is extruded to the depth of the inserted pipe end to the marked mark, and the straightness and the position of the interface of the bell and spigot are ensured to be correct; to prevent the hub from slipping, the insertion force must be maintained for the time specified in table 5 to relax;
depth gauge 3 for pipe inserting socket
Adhesive standard gauge 4
Pipe bond joint insertion force at least retention schedule 5
After the spigot-and-socket joint is connected, the extruded adhesive is wiped clean in time; after bonding, the joint should not be immediately forced to load and the rest time is shown in Table 6
Standing curing time (min) Table 6
Pipe connections to other items
a. When the hard polyvinyl chloride water supply pipe is connected with other pipe materials, valves, fire hydrants and other pipe fittings, a special joint is adopted;
b. drilling a hole on the hard polyvinyl chloride water supply pipeline to connect a branch pipe, and drilling the hole by using a pipeline drilling machine when the diameter of the hole is less than 50 mm; when the diameter of the opening is larger than 50mm, a circular cutter can be adopted; when a plurality of holes are formed in the same pipe, the minimum spacing between two adjacent holes is not less than 7 times of the formed hole diameter.
Further, the step S6 is specifically that the system is divided into sections when the water test is performed, the tests are performed respectively according to the vertical pipes, the water distribution point 1/3 is opened for each layer of water distribution branch pipe, the throttle is opened to the limit, the flow rate of the water flow is observed, the impact force of the water flow to the palm is sensed by hand, and the flow is proper if the impact force causes slight stabbing pain to the palm.
The working principle is as follows: the first step is as follows: installation preparation: checking a design drawing, checking whether the coordinate elevations of the pipelines are crossed or not, checking whether the occupied space of the pipeline arrangement is reasonable or not, if the problem is solved in time with the research and the solution of the design and related personnel, handling the change and the trade-agreement records, preparing according to the construction method determined by the construction scheme, checking materials required by construction, and excavating a groove required by pipeline installation; the second step is that: prefabricating and processing: drawing construction sketches of pipeline branches, pipe diameters, reserved pipe orifices, valve positions and the like according to a design drawing, marking the structure position of actual installation, measuring the standard size of the actual installation in sections according to the marks, recording the standard size on the construction sketches, and performing prefabrication according to the size measured by the sketches; the third step: carrying out main pipe installation, vertical pipe installation and branch pipe installation in sequence; the fourth step: testing pressure of the pipeline, corrosion prevention and heat preservation of the pipeline and flushing of the pipeline; the fifth step: and (3) water passing test: and simultaneously starting a maximum number of water distribution points according to design requirements, and observing whether the rated flow can be reached.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the 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.
Claims (8)
1. A PVC building water supply pipe installation construction process is characterized in that: the mounting process comprises the following steps:
s1: installation preparation: checking a design drawing, checking whether the coordinate elevations of the pipelines are crossed or not, checking whether the occupied space of the pipeline arrangement is reasonable or not, if the problem is solved in time with the research and the solution of the design and related personnel, handling the change and the trade-agreement records, preparing according to the construction method determined by the construction scheme, checking materials required by construction, and excavating a groove required by pipeline installation;
s2: prefabricating and processing: drawing construction sketches of pipeline branches, pipe diameters, reserved pipe orifices, valve positions and the like according to a design drawing, marking the structure position of actual installation, measuring the standard size of the actual installation in sections according to the marks, recording the standard size on the construction sketches, and performing prefabrication according to the size measured by the sketches;
s3: carrying out main pipe installation, vertical pipe installation and branch pipe installation in sequence;
s4: testing pressure of the pipeline, corrosion prevention and heat preservation of the pipeline and flushing of the pipeline;
s5: and (3) water passing test: and simultaneously starting a maximum number of water distribution points according to design requirements, and observing whether the rated flow can be reached.
2. The PVC building water supply pipe installation and construction process according to claim 1, characterized in that: and in the step S1, the elevation of the dug groove and the quality of the pipeline foundation are checked after the groove is dug, and the pipeline can be laid only after the quality is qualified.
3. The PVC building water supply pipe installation and construction process according to claim 2, characterized in that: in S1, the materials required for construction should be inspected for pipes, rubber rings, and adhesives for construction, and the materials can be used only after being qualified.
4. The PVC building water supply pipe installation and construction process according to claim 3, characterized in that: in S3, the following matters should be noted when the pipe is installed:
a1: placing the pipe into a groove, a connector, partially backfilling, testing pressure and completely backfilling, wherein 3 pipelines can be stably placed into the groove after being connected on the groove only under the conditions that the conditions are not allowed and the pipe diameter is not large;
a2: water supply pipelines are paved in the grooves, if a foundation made of other materials is not designed, the water supply pipelines are generally paved on undisturbed original soil, and after the pipelines are installed, cushion blocks used in the process of paving the pipelines are removed in time;
a3: when the pipe is lifted and placed into a ditch, a reliable soft belt lifting appliance is adopted to stably drop into the ditch, and the pipe does not collide with the ditch wall or the ditch bottom violently;
a4: when a rigid interface pipeline is constructed in a region with large day and night temperature difference change, measures are taken to prevent the pipeline and the interface from being damaged due to stress generated by the temperature difference, the bonding interface generally cannot be constructed below 5 ℃, and the rubber ring interface cannot be constructed below-10 ℃;
a5: when installing valves and pipe fittings of interfaces of the flange, measures for preventing external tension pressure from being caused are taken, and buttresses are arranged below the valves with the calibers larger than 100 mm;
a6: when the pipeline installation and laying work is interrupted, the pipe orifice is closed by using a wooden plug or other blocking plug. And impurities are prevented from entering.
5. The PVC building water supply pipe installation and construction process according to claim 4, characterized in that: in the step S3, when the pipeline is installed, it should be noted whether thrust buttresses are arranged at the tee joint and the elbow where the pipeline turns, the buttresses of the pipeline should not be built on the loose soil, the back of the pipe should be close to the thick soil, if unconditional, measures should be taken to ensure the stability of the buttresses, and a rubber sheet cushion layer should be arranged between the buttresses and the pipeline to prevent the pipeline from being damaged.
6. The PVC building water supply pipe installation and construction process according to claim 5, characterized in that: in the step S3, when the pipeline is installed, the curvature radius of the pipeline in bending is not more than 300 times of the pipe diameter, a preformed hole or a sleeve pipe is arranged at the wall penetrating position of the pipeline, the pipeline is not provided with an interface in the sleeve pipe range, and the pipeline and the sleeve pipe are filled with oil hemp.
7. The PVC building water supply pipe installation and construction process according to claim 6, characterized in that: in the S3, when the pipelines are connected, the pipelines can adopt forms of rubber ring connectors (RR connection), bonding connectors (T-S connection), flange connection and the like, the rubber ring connectors are suitable for the pipelines with the outer diameter of 63-315mm, the bonding is only suitable for the pipelines with the outer diameter of less than 160mm, and the flange connection is generally used for connecting a hard polyvinyl chloride pipe with a cast iron pipe or other pipes.
8. The PVC building water supply pipe installation and construction process according to claim 7, characterized in that: the S6 is specifically carried out in a systematic and sectional way when a water test is carried out, the test is carried out respectively according to the vertical pipes, the water distribution point of 1/3 is opened for each layer of water distribution branch pipe, the throttle is opened to the limit, the flow rate of the discharged water flow is observed, the impact force of the water flow to the palm is sensed by hands, and the flow is proper if the impact force causes slight stabbing pain to the palm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600990.7A CN114838199A (en) | 2022-05-30 | 2022-05-30 | PVC building water supply pipe installation construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600990.7A CN114838199A (en) | 2022-05-30 | 2022-05-30 | PVC building water supply pipe installation construction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114838199A true CN114838199A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210600990.7A Pending CN114838199A (en) | 2022-05-30 | 2022-05-30 | PVC building water supply pipe installation construction process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003129451A (en) * | 2001-10-22 | 2003-05-08 | Toshiba Corp | Weir device for piping |
| CN104896193A (en) * | 2015-04-20 | 2015-09-09 | 贵州建工集团第一建筑工程有限责任公司 | Construction method for curve edge end surface of building water supplying thin-walled stainless steel pipeline |
| CN107587557A (en) * | 2017-09-27 | 2018-01-16 | 广东景源建设工程有限公司 | Outdoor water engineering construction method |
| CN111059353A (en) * | 2019-12-30 | 2020-04-24 | 青岛华德仪表工程有限公司 | Construction method of water supply pipeline |
| CN111255017A (en) * | 2020-01-15 | 2020-06-09 | 济南长兴建设集团有限公司 | Installation process and method of building water supply pipeline |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003129451A (en) * | 2001-10-22 | 2003-05-08 | Toshiba Corp | Weir device for piping |
| CN104896193A (en) * | 2015-04-20 | 2015-09-09 | 贵州建工集团第一建筑工程有限责任公司 | Construction method for curve edge end surface of building water supplying thin-walled stainless steel pipeline |
| CN107587557A (en) * | 2017-09-27 | 2018-01-16 | 广东景源建设工程有限公司 | Outdoor water engineering construction method |
| CN111059353A (en) * | 2019-12-30 | 2020-04-24 | 青岛华德仪表工程有限公司 | Construction method of water supply pipeline |
| CN111255017A (en) * | 2020-01-15 | 2020-06-09 | 济南长兴建设集团有限公司 | Installation process and method of building water supply pipeline |
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Application publication date: 20220802 |