CN209876172U - Threaded connection thin-wall stainless steel water supply pipe and water supply pipe combination - Google Patents
Threaded connection thin-wall stainless steel water supply pipe and water supply pipe combination Download PDFInfo
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- CN209876172U CN209876172U CN201920558504.3U CN201920558504U CN209876172U CN 209876172 U CN209876172 U CN 209876172U CN 201920558504 U CN201920558504 U CN 201920558504U CN 209876172 U CN209876172 U CN 209876172U
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Abstract
The utility model provides a thin wall stainless steel feed pipe and feed pipe combination are connected to threaded formula, it includes at least one first body tip, first body tip includes: the thin-wall stainless steel connecting pipe connected by the threads has the advantages that the appearance is attractive, and the sealing performance is good; the installation is convenient, transition pipe fittings required to be applied by the traditional screw thread connection are reduced, the connection interfaces are reduced, the anti-seismic performance and the installation work efficiency are improved, resources are saved, and certain economic benefits are obtained.
Description
Technical Field
The utility model relates to a thin wall stainless steel feed pipe field is connected to the screw thread formula, in particular to thin wall stainless steel feed pipe and feed pipe combination are connected to screw thread formula.
Background
Along with the improvement of living standard of people, the requirements of people on energy conservation, environmental protection and improvement of living quality are higher and higher. Galvanized steel pipes, which have been used in large quantities in water supply piping systems of construction works for a long time in the past, are being gradually replaced by plastic pipes and stainless steel pipes. Because the stainless steel pipeline has good corrosion resistance, good water supply quality, high pipeline strength and long service life of up to 70 years, the stainless steel pipeline is more economical and more environment-friendly than galvanized steel pipes, plastic pipes and the like, and is gradually widely applied.
At present, the thin-wall stainless steel pipe is widely used in simple and convenient connection modes such as taper thread connection and the like due to the characteristics of high strength and good toughness. However, in the construction process, if the operational key points of the working procedures are not well controlled, common quality problems such as leakage and the like can occur, material waste can also be caused, and undesirable economic loss can occur.
It is desirable to provide a threaded connection thin-walled stainless steel water supply pipe and water supply pipe combination that addresses the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a threaded connection thin wall stainless steel feed pipe and feed pipe combination, but its thin wall stainless steel pipe through awl threaded connection each other lug connection to the transition pipe fitting that the traditional screw thread that solves among the prior art connected the required application is too much, and thin wall stainless steel feed pipe exists structural design inadequately rationally more, and the interface of connection is complicated, and traditional nonrust steel pipe connected mode duration is long, and the installation effectiveness is low, problem such as maintenance efficiency height.
In order to solve the technical problem, the utility model adopts the technical scheme that: a threaded connection thin-wall stainless steel water supply pipe comprises a connecting pipe, wherein the connecting pipe comprises at least one first pipe body end part;
the first pipe end portion includes: a first round pipe, a first transition pipe and a first opening conical pipe, wherein one end of the first round pipe is fixedly connected with the first opening conical pipe through the first transition pipe,
wherein be equipped with an open thread portion, an intermediate thread portion and a afterbody screw portion on an open circular cone pipe, an open thread portion, an intermediate thread portion and an afterbody screw portion fixed connection in proper order, afterbody screw portion external screw thread cross-sectional diameter equals with a pipe outer wall cross-sectional diameter No. one, just an open thread portion, an intermediate thread portion, a afterbody and screw thread cross-sectional diameter increase gradually in proper order, an open thread portion external screw thread cross-sectional diameter equals with an afterbody screw portion internal screw thread cross-sectional diameter No. one.
Be equipped with the throat external screw thread that the diameter reduces gradually near the opening part through first body tip, reduced the required transition pipe fitting of using of traditional screw thread connection, not only the connection is more firm between connecting pipe and pipeline, has saved the piping erection use cost, and constructor installation simple operation is rapid moreover, and work efficiency is high.
A thin wall stainless steel feed pipe is connected to screwed type in, liquid raw belt layer (anaerobic adhesive) has been paintd at the external screw thread position of an opening circular cone pipe, paints the external screw thread position through liquid raw belt layer, not only carries out anti-oxidant to a body tip external screw thread position, avoids the screwed pipe corrosion, and seals the pipe connection department, avoids threaded connection department to take place the seepage.
A threaded connection thin wall stainless steel feed pipe in, a transition outside of tubes wall is equipped with the flange, the flange is close to an opening circular cone one side and is embedded to have the sealing washer, compresses tightly through the throat contact of sealing washer with the pipe end, plays fine sealed effect to the pipe connection department.
In the threaded connection thin-wall stainless steel water supply pipe of the utility model, the conicity of the first opening conical pipe is 1: 16-1: 18, the taper of the first opening conical pipe is accurate, so that the processing by a user is convenient, and the sealing performance of the threaded connection part of the pipeline is improved.
In the threaded connection thin-wall stainless steel water supply pipe of the utility model, the connecting pipe is an SUS304 thin-wall stainless steel pipe, the diameter of the connecting pipe is between 15mm and 100mm, the wall thickness is between 0.6mm and 1.5mm, and the internal thread angle of the first opening conical pipe is 60 degrees; the connecting pipe is stainless steel material, and is corrosion-resistant in the atmosphere, long service life, and the non-staining quality of water guarantees that the user is healthy with water, and the internal thread angle of an opening circular cone pipe is 60, and consequently the screw thread tooth that is equipped with on an opening circular cone pipe is equilateral type tooth, and the better atress of ability behind the piping erection promotes pipeline junction intensity.
A threaded connection thin wall stainless steel feed pipe in, first body tip external screw thread threaded connection has the internal screw thread second body tip of flaring. The end part of the first pipe body can be installed with other pipelines in a threaded mode, so that the use is convenient, the number of connecting pipe fittings required by pipeline connection is reduced, and the installation work efficiency of constructors is improved.
A during thin wall stainless steel feed pipe is connected to threaded connection, including the connecting pipe, the connecting pipe includes at least one second body tip, second body tip includes No. two pipes, No. two transition pipes and No. two opening circular cones, No. two pipe one end and No. two opening circular cones pass through No. two transition pipe fixed connection.
The opening conical pipe is provided with a first opening thread part, a first middle thread part and a first tail thread part, the first opening thread part, the first middle thread part and the first tail thread part are fixedly connected in sequence, the thread cross-section diameters of the first opening thread part, the first middle thread part and the first tail thread part are reduced in sequence, the external thread cross-section diameter of the first tail thread part is equal to the cross-section diameter of the first round pipe, and the external thread cross-section diameter of the first tail thread part is equal to the internal thread cross-section diameter of the first opening thread part.
Through being equipped with the internal thread of diameter crescent at second body tip, the constructor of being convenient for will have the external screw thread pipeline and carry out butt joint screw installation, and the structure is firm, has reduced the interface of connection, has not only saved the material cost of piping erection, has effectually shortened installation period moreover, both resources are saved, gain certain economic benefits again.
A threaded connection thin-wall stainless steel water supply pipe combination comprises a plurality of connecting pipes, wherein one part of the connecting pipes comprises a plurality of connecting pipes, one part of the connecting pipes comprises a first pipe body end part, and the other part of the connecting pipes comprises a second pipe body end part;
the connecting pipe with the first pipe body end part is connected with the connecting pipe with the second pipe body end part to form the water supply pipe combination.
Can all be first body tip or second body tip through the connecting pipe tip, promote the variety of connecting pipe, convenient to use, and be connected with the second body tip of other connecting pipes through first body tip, in order to form the feed pipe combination, the feed pipe combination after the installation is accomplished is not only outward appearance pleasing to the eye, and sealing performance is good, but also first body tip or second body tip each other lug connection, has reduced the transition pipe fitting that traditional screw thread connected needs the application, has reduced the interface of connecting, has improved antidetonation, anti operating temperature difference's performance and installation work efficiency.
In the threaded connection thin-wall stainless steel water supply pipe combination of the utility model, after the connection of the connecting pipe is completed, the outer wall of the first opening conical pipe is connected with the inner wall of the second opening conical pipe, the number of the thread teeth at the connection part is 3, 4, 5 or 6, the outer wall of the first transition pipe is connected with the inner wall of the opening part at one end of the second opening conical pipe, and the inner wall of the second transition pipe is connected with the outer wall of the opening part at one end of the first opening conical pipe; after the pipeline connection is finished, the connection part is tightly attached, so that the pipeline connection is attractive in appearance and good in sealing performance, and the decoration grade is improved.
A threaded connection thin wall stainless steel feed pipe combination in, the internal thread position threaded connection clearance that the external screw thread position of first body tip and second body tip carried out being connected in the effective thread section is within 0.5mm, the pipe connection clearance is less, the threaded installation is inseparabler more between the connecting tube, prevents the seepage of pipe connection department.
The utility model discloses compare in prior art, its beneficial effect is: the threaded connection thin-wall stainless steel connecting pipe and the water supply pipe combination of the utility model have the advantages that the threaded connection thin-wall stainless steel connecting pipe has beautiful appearance and good sealing performance; the installation is convenient, transition pipe fittings required to be applied by the traditional screw thread connection are reduced, the connection interfaces are reduced, the anti-seismic performance and the installation work efficiency are improved, resources are saved, and certain economic benefit is obtained;
meanwhile, the connecting pipes can be directly connected with each other, the connecting pipes are in contact and pressed with the sealing ring through the taper formed by the necking of the pipe body port, the sealing effect of the threaded interface is reliable under the double action of the thread and the sealing ring, and the simple and reliable construction operation of adopting a liquid raw material belt is assisted by the thread connection, so that the water leakage of the pipeline installation interface is avoided;
the thin-wall stainless steel pipe connected by the taper threads after being put into use is safe and reliable, rarely has a repair phenomenon, is low in maintenance cost, can meet and match the requirements of high-grade decoration, and improves the integral grade of a building.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.
Fig. 1 is a schematic view of the structure of the first pipe end of the threaded connection thin-wall stainless steel water supply pipe and the water supply pipe assembly of the present invention.
Fig. 2 is a schematic structural view of the second pipe end of the threaded connection thin-wall stainless steel water supply pipe and the water supply pipe assembly of the present invention.
FIG. 3 is a schematic view of the water supply pipe assembly structure of the screw thread type connection thin-wall stainless steel water supply pipe assembly and the water supply pipe assembly of the present invention.
Fig. 4 is a side view of the screw-threaded connection thin-wall stainless steel water supply pipe and the water supply pipe combination of the present invention.
Description of the drawings: first body tip 1, first pipe 11, first transition pipe 12, flange 121, sealing washer 122, first open circular cone 13, first open screw portion 131, first middle screw portion 132, first afterbody screw portion 133, second body tip 2, second circular pipe 21, second transition pipe 22, second open circular cone 23, second open screw portion 231, second middle screw portion 232, second afterbody screw portion 233.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
The water supply pipe among the prior art is not convenient for connect the installation, and the transition pipe fitting that traditional screw thread connected required application is more, and the interface of connecting is many simultaneously, and anti-seismic performance is relatively poor, easily seeps water, corrosion, not only reduces the water quality, and expense consumption such as repair maintenance is big moreover.
The present invention provides a preferred embodiment of a threaded connection thin-walled stainless steel water supply pipe which can solve the above technical problems.
Referring to fig. 1, fig. 1 is a schematic view of the end structure of the first pipe body of the threaded connection thin-wall stainless steel water supply pipe and the water supply pipe assembly of the present invention. The threaded connection thin-wall stainless steel water supply pipe comprises a connecting pipe, wherein the connecting pipe comprises at least one first pipe body end part 11,
the first pipe body end portion 1 includes: a first round pipe 11, a first transition pipe 12 and a first opening conical pipe 13, wherein one end of the first round pipe 11 is fixedly connected with the first opening conical pipe 13 through the first transition pipe 12,
the first opening conical tube 13 is provided with a first opening thread part 131, a first middle thread part 132 and a first tail thread part 133, the first opening thread part 131, the first middle thread part 132 and the first tail thread part 133 are fixedly connected in sequence, the external thread section diameter of the first tail thread part 133 is equal to the external wall section diameter of the first round tube 11, the first opening thread part 131, the first middle thread part 132, the first tail part and the thread section diameter are gradually increased in sequence, and the external thread section diameter of the first opening thread part 131 is equal to the internal thread section diameter of the first tail thread part 133.
Be close to the throat external screw thread that the opening part reduced gradually through first body tip 1, not only make the connecting pipe and have the pipeline of internal thread part to connect more firmly between, saved the piping erection use cost, constructor installation simple operation is rapid moreover, and the high pipeline of work efficiency is connected more firmly between, has saved the piping erection use cost, and constructor installation simple operation is rapid moreover, and work efficiency is high.
In the threaded connection thin-wall stainless steel water supply pipe of the utility model, the external thread part of the first opening conical pipe 13 is coated with a liquid raw material belt layer (anaerobic adhesive); scribble the external screw thread position of an opening circular cone 13 through liquid raw material band layer, not only carry out anti-oxidant to 1 external screw thread position of body tip, avoid the screwed pipe corrosion, and sealed to the pipeline junction, avoid threaded connection department to take place the seepage.
A screw thread formula connect thin wall stainless steel feed pipe in, a transition pipe 12 outer wall is equipped with flange 121, flange 121 is close to an opening circular cone 13 one side and is embedded to have sealing washer 122, in the connecting pipe installation, other pipeline tip pass through sealing washer 122 and compress tightly with the throat contact of first pipe end portion 1, play fine sealed effect to the pipe connection department.
In the threaded connection thin-wall stainless steel water supply pipe of the utility model, the conicity of the first opening conical pipe 13 is 1: 16-1: 18, the taper of the first opening conical pipe 13 is accurate, so that the processing by a user is convenient, and the sealing performance of the threaded connection part of the pipeline is improved.
A screw thread formula connect thin wall stainless steel feed pipe combination in, the connecting pipe is the nonrust steel pipe of SUS304 thin wall, the connecting pipe diameter is between 15mm ~ 100mm, and pipeline wall thickness is between 0.6mm ~ 1.5mm, the internal thread angle of an opening circular cone 13 is 60.
Therefore, the thread teeth arranged on the first opening conical pipe 13 are equilateral teeth, the pipeline can be better stressed after being installed, the strength of the joint of the pipeline is improved, the strength of the thin-wall stainless steel water supply pipe material is high, the strength of the SUS304 thin-wall stainless steel pipe is 2 times that of a galvanized pipe and 10 times that of a PPR pipe, the pipeline is corrosion-resistant in the atmosphere, the water quality is not polluted, and the service life of the pipeline is long.
In the threaded connection thin-wall stainless steel water supply pipe of the utility model, the external thread part of the first pipe body end part 1 is in threaded connection with the second pipe body end part with flaring internal thread; first body tip 1 can carry out the screw thread installation with other pipelines, and convenient to use reduces the required connecting pipe fitting of pipe connection, promotes constructor installation work efficiency.
Compared with the traditional water supply pipe connection, the embodiment has the advantages that the flaring external threads with the diameters gradually reduced are arranged at the position, close to the opening, of the end part 1 of the first pipe body, so that the existing threaded connection thin-wall stainless steel connecting pipe and other internal thread pipe fittings can be directly connected with each other, the installation is simple, transition pipe fittings required to be applied in the traditional threaded connection are reduced, the connection interfaces are reduced, and the shock resistance, the working temperature difference resistance and the installation work efficiency are improved.
Please refer to fig. 2, wherein fig. 2 is a schematic structural diagram of a second pipe end of the screw thread type connection thin-wall stainless steel water supply pipe and the water supply pipe combination of the present invention, the screw thread type connection thin-wall stainless steel water supply pipe includes a connection pipe, at least one second pipe end 2 of the connection pipe, the second pipe end 2 includes a second round pipe 21, a second transition pipe 22 and a second opening conical pipe 23, one end of the second round pipe 21 is fixedly connected with the second opening conical pipe 23 through the second transition pipe 22.
The second opening conical tube 23 is provided with a second opening thread portion 231, a second middle thread portion 232 and a second tail thread portion 233, the second opening thread portion 231, the second middle thread portion 232 and the second tail thread portion 233 are fixedly connected in sequence, the thread cross-sectional diameters of the second opening thread portion 231, the second middle thread portion 232 and the second tail thread portion 233 are reduced in sequence, the external thread cross-sectional diameter of the second tail thread portion 233 is equal to the cross-sectional diameter of the second round tube 21, and the external thread cross-sectional diameter of the second tail thread portion 233 is equal to the internal thread cross-sectional diameter of the second opening thread portion 231.
Be close to the flaring external screw thread that the opening part reduced gradually through second body tip 2, not only make the connecting tube tip and have the pipeline of external screw thread part within a definite time and connect more firmly, saved piping erection use cost, constructor installation simple operation is rapid moreover, and the work progress need not use the electrogas welding, can not produce exhaust pollution and noise pollution to the atmosphere, environmental protection equipment.
Compared with the traditional water supply pipe connection, the thin-wall stainless steel connecting pipe in threaded connection can be directly connected with other external threaded pipes, so that the thin-wall stainless steel connecting pipe is simple to install, transition pipe fittings required to be applied in the traditional threaded connection are reduced, connecting interfaces are reduced, and the shock resistance, the working temperature difference resistance and the installation efficiency are improved.
Referring to fig. 3 and 4, fig. 3 is a schematic view of a water supply pipe assembly of the threaded connection thin-wall stainless steel water supply pipe and water supply pipe assembly of the present invention, and fig. 4 is a side view of the water supply pipe assembly of the threaded connection thin-wall stainless steel water supply pipe and water supply pipe assembly of the present invention.
Referring to fig. 1 and 2, a threaded connection thin-walled stainless steel water supply pipe assembly according to the present invention includes a plurality of connection pipes, a portion of the connection pipes includes a first pipe end 1 as shown in fig. 1, and a portion of the connection pipes includes a second pipe end 2 as shown in fig. 2;
the connecting pipe with the first pipe body end 1 is connected with the connecting pipe with the second pipe body end 2 to form the water supply pipe combination.
Through the threaded connection of the first pipe body end part 1 and the second pipe body end part 2 of the two different pipelines, not only are the interfaces connected between the pipelines reduced, the installation cost is reduced, but also the appearance is attractive after the pipelines are connected, the sealing performance is good, the repair phenomenon rarely occurs, the maintenance cost is low, the requirements of high-grade decoration can be met and matched, and the integral grade of a building is improved.
A screw thread formula connect thin wall stainless steel feed pipe combination in, the connecting pipe is connected and is accomplished the back, No. 13 outer walls of opening circular cone pipe are connected with No. two opening circular cone pipe 23 inner walls, and junction thread tooth quantity is 3, 4, 5 or 6, No. 12 outer walls of transition pipe and No. two opening circular cone 23 one end opening part inner wall connections, No. two 22 inner walls of transition pipe and No. 13 one end opening part outer wall connections of opening circular cone pipe.
After the pipe connection is completed, the connecting section with 4-5 screw threads is formed by connecting the connecting pipes, so that the installation between the pipes is convenient, the connection between the screw threads is more stable, the joints of the end parts of the two pipe bodies are tightly connected, the appearance of the pipe connection is attractive, the sealing performance is good, and the decoration grade is improved.
A threaded connection thin wall stainless steel feed pipe combination in, among the feed pipe combination the external screw thread position of first body tip with the internal thread position threaded connection clearance that second body tip carried out the connection is within 0.5mm, guarantees that pipeline threaded connection is firm, avoids the water leakage of pipe connection department infiltration, safe and reliable, the phenomenon appears reprocessing at very least, the maintenance cost is low.
In the embodiment, the thin-wall stainless steel water supply pipe combination in conical threaded connection does not need to use electrogas welding in the construction process, does not produce waste gas pollution and noise pollution to the atmosphere, is an environment-friendly construction process, is made of stainless steel in the using process of the water pipe, is corrosion-resistant, does not pollute water, and ensures the use safety of the pipeline.
After the water supply pipe is combined and connected, the appearance is attractive and the sealing performance is good; the thin-wall stainless steel pipe in taper thread connection after being put into use is safe and reliable, the repair phenomenon is rarely caused, the maintenance cost is low, and the practicability is strong.
In the drawings, elements having similar structures are denoted by the same reference numerals.
The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.
Installation the utility model discloses a construction flow of thin wall stainless steel feed pipe and feed pipe combination is connected to screw thread formula includes:
before the pipeline is installed, construction preparation is required.
Firstly, training constructors in the aspect of a taper thread connection construction process of a thin-wall stainless steel water supply pipe before construction, and mastering the application requirements of special tools and machines; secondly, the specification, the model and the quality of the raw materials such as the approach pipe fittings and the like must meet the requirements of the design and the national current standard, have quality qualified certificates, report the verification to the supervision engineer, and can be used after the verification is qualified.
Then, workers need to carefully check a civil engineering structure drawing, a building drawing and each professional installation drawing, check whether the space occupied by the pipeline arrangement is reasonable or not, check whether the coordinates and elevations of various pipelines have a cross phenomenon or not, and make reasonable construction schemes or measures in advance; the pipe hole or the mounting sleeve is reserved at the position where the pipeline penetrates through the wall, the hole size and the sleeve specification meet the requirements, the coordinate and the elevation are correct, and the template and sundries at the mounting position along the pipeline are cleaned up.
Then, construction operation is carried out:
firstly, arranging and laying pipelines; firstly, constructors need to reserve a groove in advance for a pipeline embedded in a wall according to design or relevant regulations, when the size of the groove is not required by a design drawing, the outer diameter of the pipe is added by 20 mm-30 mm in depth, the outer diameter of the pipe is added by 40 mm-60 mm in width, and when the horizontal groove is longer or the depth of the groove exceeds 1/3 of the wall thickness, professional agreement on the structure is required.
And secondly, arranging a steel sleeve when the pipeline passes through the floor slab, wherein the top of the steel sleeve is not less than 50mm higher than the decorative ground, and filling the gap of the passing part with waterproof factice when the pipeline passes through the roof slab.
And thirdly, processing and prefabricating according to the system and the sections. Drawing a construction sketch according to a design drawing, marking the actually installed structure part on the construction sketch, prefabricating and processing according to the actually marked size, grouping and numbering and combining according to pipe sections, and considering the size of the assembly to be convenient for transportation.
Processing and connecting the pipeline taper threads:
firstly, expanding and necking a thin-wall stainless steel water supply pipe, expanding the pipe end of one pipe or pipe fitting into a conical pipe by using a special expanding head to form a second-opening conical pipe 23, and contracting the pipe end of the other pipe or pipe fitting to be connected into the conical pipe by using a special necking head to form a first-opening conical pipe 13, wherein the conicity is 1: 16.
Secondly, rolling threads on the thin-wall stainless steel water supply pipe:
1) and selecting a special engaging thread machine tool with an applicable specification according to the diameter of the pipe. A manual engaging thread machine tool is selected for the pipe with the diameter of 15-25 mm, and an electric engaging thread machine tool is selected for the pipe with the diameter of 32-100 mm.
2) Checking whether the special engaging screw machine meets the requirements in the aspects of appearance, support, working site environment, use voltage and the like. The machine tool is ensured to have complete and clean appearance, no oil stain, stable support, no water stain and stain on the operation site, proper operation position and space and correct voltage use.
3) The pipe end to be processed is placed on a supporting opening of a special machine after the required material length is vertically cut off, burrs and dirt inside and outside the pipe opening are removed, and the pipe opening is flattened in a rounding mode, the pipe opening is sleeved with an inner pressing core, the length of the pipe opening is about 5-6 tooth pitches, and the longest pipe opening does not exceed the inner end face of the outer pressing wheel.
4) And pressing down the pressing handle or clockwise rotating the pressing hand wheel to enable the outer pressing wheel to press the inner pressing core.
5) When a manual engaging screw machine tool is used, DN 15-25 is used, the one-way rotating handle is continuously pressed for 8-10 times, the pipe body is rotated for 2-3 circles, and the processing of the internal thread of the second opening conical pipe 23 is completed; when a DN 32-50 electric meshing thread machine tool is used, a motor switch is pressed down to enable the pipe body to rotate forward for 3-4 circles, and internal thread processing is completed; when an electric meshing thread machine tool above DN65 is used, firstly, the forward rotation switch of the motor is pressed down to enable the pipe body to rotate forward for 3-4 circles, then the reverse rotation switch of the motor is pressed down to enable the pipe body to rotate reversely for 3-4 circles, and the internal thread processing of the first opening conical pipe 13 is completed.
6) If the thread depth is not enough, the handle can be pressed for 2-4 times by a manual engaging thread machine; the electric engaging screw machine can rotate the pressing hand wheel to press the outer pressing wheel, so that the pipe body rotates for one more turn until the screw depth is enough.
7) And pulling up the pressing handle or rotating the pressing hand wheel anticlockwise to separate the outer pressing wheel from the inner pressing core and screwing out the pipe to finish the processing of the internal thread of the pipeline.
When the pipeline is threaded, the device can be applied to various structures, such as a long-strip-shaped pipeline, a three-way structure, an L-shaped bend and the like.
And fourthly, blanking the pipeline. Special pipe cutting machines are needed to ensure that the section is smooth and perpendicular to the axis of the pipe, and burrs and pipe films remaining on the section are removed completely.
Fifthly, during pipeline installation, ensuring the pipeline to be smooth as much as possible without distortion, and paying attention to pipeline installation and avoidance; and the hanger is required to be arranged according to different pipe diameters and requirements, the arrangement position is accurate, and the hanger is tightly contacted with the pipeline.
1) The thin-wall stainless steel pipeline support and hanger can be actually installed by a planting method, an expansion bolt method, a nail shooting method, an embedded welding method and a column embracing method in combination with a field.
2) The support and hanger is generally made of angle steel, round steel, flat steel and the like. Aiming at different installation positions, a triangular hanging bracket, a portal hanging bracket or a hoop-shaped hanging bracket can be adopted.
3) Because the pipe wall of thin wall stainless steel pipe is thinner, the pipe strap adopts band steel (adopt stainless steel material when obviously adorning) to cook and form, after cooking well, paste a layer of rubber insulation cushion at band steel pipe strap, pipeline bracket and pipeline contact surface, play and avoid taking place the effect of electrochemical reaction and protection pipeline.
4) The spacing between the stand pipe supporting and hanging frames is not more than 3 m.
Because the pipeline rigidity after the pipeline is connected to certain length is slightly poor, therefore thin wall stainless steel pipe violently pipe support interval does:
when the nominal diameter of the pipeline is 15mm or 20mm, the maximum distance between the supports among the heat-insulating pipes is 2m, and the maximum distance between the supports among the heat-insulating pipes is 2.5 m;
when the nominal diameter of the pipeline is 25mm, the maximum distance between the supports among the heat-insulating pipes is 2m, and the maximum distance between the supports among the heat-insulating pipes is 3 m;
when the nominal diameter of the pipeline is 32mm, the maximum distance between the supports among the heat-insulating pipes is 2.5m, and the maximum distance between the supports among the heat-insulating pipes is 3 m;
when the nominal diameter of the pipeline is 40mm, the maximum distance between the supports among the heat-insulating pipes is 2.5m, and the maximum distance between the supports among the heat-insulating pipes is 3.5 m;
when the nominal diameter of the pipeline is 50mm, the maximum distance between the supports among the heat-insulating pipes is 2.5m, and the maximum distance between the supports among the heat-insulating pipes is 4 m;
when the nominal diameter of the pipeline is 70mm, the maximum distance between the supports among the heat-insulating pipes is 3m, and the maximum distance between the supports among the heat-insulating pipes is 4 m;
when the nominal diameter of the pipeline is 80mm, the maximum distance between the supports among the heat-insulating pipes is 3.5m, and the maximum distance between the supports among the heat-insulating pipes is 4 m;
when the nominal diameter of the pipeline is 100mm, the maximum distance between the supports between the heat-insulating pipes is 4m, and the maximum distance between the supports between the heat-insulating pipes is 4 m.
5) Before the support hanger is installed, the support hanger is required to be positioned on a building structure surface in a snapping line mode, the installation position of the support hanger is determined, and the positions of holes to be drilled are drawn according to the pipe diameter.
6) A pipeline supporting and hanging frame which is arranged in a pipe well in a concealed mode is provided with profile steel at the mouth of the pipe well, and hanging lines are unified from top to bottom to install clamping pieces.
7) The pipe clamp of the open-mounted pipeline is made of stainless steel materials.
8) When the conveying medium is hot water, the hanger and the suspender of the pipeline should deviate in the opposite direction of thermal expansion.
And sixthly, installing and connecting the thin-wall stainless steel water supply pipe.
Firstly, before connecting different pipe end threaded interfaces, constructors must clean the threaded connection parts.
Secondly, uniformly coating liquid raw material belts on the external thread part of the first opening conical tube 13 and the internal thread part of the second opening conical tube 23 by using a writing brush, embedding a sealing ring in the flange, wherein the flange is arranged at the end part of the first tube body of the connecting tube between the thread and the transition cone, and the sealing ring is contacted and pressed with a necking of the tube end under the screwing pressure action of the thread to play a good sealing effect;
finally, the matching size of the internal and external thread interfaces at the end parts of the pipe bodies of the two connecting pipes is proper to screw 4-5 teeth by hand, and then the pipe is screwed by using special pipe tongs. The clearance between the internal thread and the external thread is controlled within 0.5mm, and the pipeline connection and installation are completed.
And seventhly, testing the pressure of the pipeline.
The complete curing time of the liquid raw material belt is 24 hours, so that the pressure test can be carried out 24 times after the pipeline is installed.
Firstly, before the pipeline strength test, whether each interface and node of the system pipeline are perfect and whether the pipeline bracket is firm should be checked, and the pipeline joint should be exposed clearly during the test; secondly, during pipeline test, water should be slowly injected into the pipeline, air in the pipeline is removed completely, and pressure should be slowly increased during pressure increase; the water supply pipeline system is observed under the test pressure for 10min, the pressure drop is not more than 0.02MPa, and then the pressure is reduced to the working pressure for inspection, and the water supply pipeline system is not allowed to leak.
The hydrostatic test pressure of the indoor water supply pipeline must meet the design requirements. When the design is not noted, the test pressure of the water supply pipeline system is 1.5 times of the working pressure, but not less than 0.6MPa, the test pressure of the hot water pipeline system is the working pressure of the system vertex plus 0.1MPa, and the test pressure of the system vertex is not less than 0.3 MPa.
When the pressure of the pipeline system is increased and water leakage is found or the pressure is reduced to exceed the specified value, the pipeline is checked, and after the reason of the water leakage is eliminated, the pressure is re-tested according to the requirements until the requirements are met.
When the pipeline is subjected to a hydrostatic test and a water-passing capability inspection in an environment with the temperature lower than 5 ℃, reliable anti-freezing measures should be taken, and after the test is finished, the stored water should be drained.
And eighthly, the pipeline flushing pipeline is flushed and disinfected before delivery, sampling inspection is carried out by relevant departments, the pipeline flushing pipeline can be used according with the national 'standard for domestic drinking water', and flushing and disinfection of a pipeline system are carried out after pressure test of the pipeline is qualified.
Before flushing, instruments in the system are protected, all pipeline accessories such as a throttle valve and a check valve which are in trouble with flushing work are dismantled and stored properly, and the pipeline accessories are reset after flushing; and the proper positions of the pipeline flushing water inlet and the water outlet are selected, and the impurities in the pipeline system can be ensured to be flushed completely.
When the pipeline is cleaned, the water supply pipeline is flushed at the maximum flow rate of the system and the flow speed of not less than 1.5m until the water color and the transparency at the outlet are consistent with those at the inlet in visual inspection and the pipeline is qualified; in order to prevent chloride ions from corroding the pipeline, the pipeline is preferably filled with 0.03% potassium permanganate disinfectant for disinfection, and the disinfectant is kept still in the pipeline for 24 hours and then is emptied and then is flushed with drinking water.
And ninthly, insulating the pipeline.
The hot water pipe, the hot water return pipe and the hot water heating equipment are required to be insulated by adopting insulation materials so as to prevent heat loss, and the insulation and the condensation prevention can be carried out after the pressure test and the irrigation test are finished.
The heat insulating material is made of flame-retardant foamed rubber and plastic, the heat conductivity coefficient is less than 0.037w/(m.k), the oxygen index is greater than or equal to 32, and the heat insulating material is bonded by special glue. The heat-insulating material is coated with aluminum skin with the thickness of 1.5 mm. The thickness of the heat-insulating layer is required to meet the requirements of relevant terms in the national public building energy-saving design standard (GB 50189-2005); and the binding is tight and uniform during the heat preservation construction, the surface is smooth, and the phenomenon of unevenness is avoided.
This completes the installation process of the threaded connection thin-walled stainless steel service pipe of the preferred embodiment.
The thread type connection thin-wall stainless steel water supply pipe of the preferred embodiment can be directly connected with each other through the thread parts among the pipelines, so that transition pipe fittings required to be applied in the traditional thread connection are reduced, connection interfaces are reduced, the performances of shock resistance and working temperature difference resistance and installation work efficiency are improved, labor cost is saved by 65% compared with the traditional stainless steel pipe connection mode, the construction period is effectively shortened, resources are saved, and certain economic benefits are obtained.
Secondly, the thin-wall stainless steel water supply pipe in threaded connection does not need to use electrogas welding in the construction process, waste gas pollution and noise pollution to the atmosphere are avoided, the construction process is environment-friendly, and only short materials and waste materials need to be recycled and stacked after construction, so that the construction process is environment-friendly.
Meanwhile, the end part of the first pipe body is in taper thread connection with the end part of the second pipe body, so that the water supply pipeline is attractive in appearance and good in sealing performance after being installed. The thin-wall stainless steel pipe connected by the taper threads after being put into use is safe and reliable, rarely has a repair phenomenon, is low in maintenance cost, can meet and match the requirements of high-grade decoration, and improves the integral grade of a building.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. A threaded connection thin-wall stainless steel water supply pipe is characterized by comprising a connecting pipe, wherein the connecting pipe comprises at least one first pipe body end part;
the first pipe end portion includes: a first round pipe, a first transition pipe and a first opening conical pipe, wherein one end of the first round pipe is fixedly connected with the first opening conical pipe through the first transition pipe,
wherein be equipped with an open thread portion, an intermediate thread portion and a afterbody screw portion on an open circular cone pipe, an open thread portion, an intermediate thread portion and an afterbody screw portion fixed connection in proper order, afterbody screw portion external screw thread cross-sectional diameter equals with a pipe outer wall cross-sectional diameter No. one, just an open thread portion, an intermediate thread portion, a afterbody and screw thread cross-sectional diameter increase gradually in proper order, an open thread portion external screw thread cross-sectional diameter equals with an afterbody screw portion internal screw thread cross-sectional diameter No. one.
2. The threaded thin-walled stainless steel service pipe of claim 1 wherein the external threaded portion of said first open conical tube is coated with a layer of liquid green tape.
3. The threaded thin-walled stainless steel service pipe of claim 1, wherein the outer wall of the first transition pipe is provided with a flange, and a sealing ring is embedded in one side of the flange close to the first opening conical pipe.
4. The threaded connection thin-walled stainless steel water supply pipe according to claim 1, wherein the conicity of the first opening conical pipe is 1: 16-1: 18, respectively.
5. The threadingly-connected thin-walled stainless steel service pipe of claim 1, wherein the connecting pipe is an SUS304 thin-walled stainless steel pipe, the connecting pipe has a diameter of 15mm to 100mm and a wall thickness of 0.6mm to 1.5mm, and the angle of the internal thread of the first opening conical pipe is 60 °.
6. The threadingly-connected thin-walled stainless steel service pipe of claim 1 wherein the first pipe body end portion male threads are threadably connected to a second pipe body end portion having a flared female thread.
7. A threaded connection thin-wall stainless steel water supply pipe is characterized by comprising a connecting pipe, wherein the connecting pipe comprises at least one second pipe body end part,
the end part of the second pipe body comprises a second round pipe, a second transition pipe and a second opening conical pipe,
one end of the second round pipe is fixedly connected with the second opening conical pipe through a second transition pipe;
the opening conical pipe is provided with a first opening thread part, a first middle thread part and a first tail thread part, the first opening thread part, the first middle thread part and the first tail thread part are fixedly connected in sequence, the thread cross-section diameters of the first opening thread part, the first middle thread part and the first tail thread part are reduced in sequence, the external thread cross-section diameter of the first tail thread part is equal to the cross-section diameter of the first round pipe, and the external thread cross-section diameter of the first tail thread part is equal to the internal thread cross-section diameter of the first opening thread part.
8. A threaded connection thin-walled stainless steel service pipe assembly comprising a plurality of connection pipes, part of said connection pipes comprising a first pipe body end according to any one of claims 1 to 6 and part of said connection pipes comprising a second pipe body end according to any one of claims 7;
the connecting pipe with the first pipe body end part is connected with the connecting pipe with the second pipe body end part to form the water supply pipe combination.
9. The screwed connection thin-walled stainless steel water supply pipe combination as claimed in claim 8, wherein after the connection of the connection pipes is completed, the outer wall of the first opening conical pipe is connected with the inner wall of the second opening conical pipe, the number of the screw threads at the connection position is 3, 4, 5 or 6, the outer wall of the first transition pipe is connected with the inner wall of the opening at one end of the second opening conical pipe, and the inner wall of the second transition pipe is connected with the outer wall of the opening at one end of the first opening conical pipe.
10. The threadingly-connected thin-walled stainless steel service pipe assembly of claim 8 wherein the threaded connection clearance between the male threaded portion of the first body end and the female threaded portion of the second body end of the service pipe assembly is within 0.5 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558504.3U CN209876172U (en) | 2019-04-23 | 2019-04-23 | Threaded connection thin-wall stainless steel water supply pipe and water supply pipe combination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558504.3U CN209876172U (en) | 2019-04-23 | 2019-04-23 | Threaded connection thin-wall stainless steel water supply pipe and water supply pipe combination |
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| CN209876172U true CN209876172U (en) | 2019-12-31 |
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| CN201920558504.3U Active CN209876172U (en) | 2019-04-23 | 2019-04-23 | Threaded connection thin-wall stainless steel water supply pipe and water supply pipe combination |
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