CN117432870A - Hot water heat preservation pipe and butt welding method thereof - Google Patents
Hot water heat preservation pipe and butt welding method thereof Download PDFInfo
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- CN117432870A CN117432870A CN202311757863.9A CN202311757863A CN117432870A CN 117432870 A CN117432870 A CN 117432870A CN 202311757863 A CN202311757863 A CN 202311757863A CN 117432870 A CN117432870 A CN 117432870A
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- 238000003466 welding Methods 0.000 title claims abstract description 169
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 238000004321 preservation Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 238000005260 corrosion Methods 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 22
- 239000010959 steel Substances 0.000 description 22
- 239000012530 fluid Substances 0.000 description 20
- 230000007704 transition Effects 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/0254—Welded joints the pipes having an internal or external coating
- F16L13/0263—Welded joints the pipes having an internal or external coating having an internal coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
-
- 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
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to the technical field of pipeline equipment, in particular to a hot water heat preservation pipe and a butt welding method thereof, wherein the hot water heat preservation pipe comprises: welded part and multistage body, multistage body is from left to right to be connected gradually, and every section body all includes: the middle pipe body, the left pipe body and the right pipe body are respectively arranged at two sides of the middle pipe body, and the inner wall of the middle pipe body is coated with an anti-corrosion layer; wherein, connect through welded part between two adjacent sections body. According to the invention, the multi-section pipe bodies are sequentially connected from left to right through the welding part, so that the laying of the hot water heat insulation pipe can be realized, and compared with the laying mode that one section of pipe body is subjected to welding operation and then coating operation, the laying mode that only the welding is performed and the multi-section pipe body can be simultaneously laid is adopted: the anti-corrosion coating process after the welding operation process is omitted, the laying time of a single pipeline is shortened by one seventh, the laying period of the hot water heat preservation pipe can be shortened, and the economic benefit is obviously improved.
Description
Technical Field
The invention relates to the technical field of pipeline equipment, in particular to a hot water heat preservation pipe and a butt welding method thereof.
Background
At present, a hot water heat preservation pipe generally adopts a heat preservation mode that a steel pipe is combined with materials such as polyurethane and PE, the steel pipe is generally made of carbon steel, the inside of the steel pipe is not subjected to corrosion protection treatment, and the hot water heat preservation pipe is commonly used for urban heating, wherein: the length of the single-section steel pipe is 12 meters, and the diameter of the pipeline is 1.6 meters. In the use, because the roughness of steel pipe inner wall itself is higher, simultaneously, after the steel pipe is used for a long time, the corruption of its inner wall aggravates for the unsmooth fluctuation of steel pipe inner wall is more obvious, has hindered the transportation of fluid to a certain extent, and causes certain energy consumption loss.
In order to shorten the fluid conveying time and reduce the energy consumption loss in the fluid conveying process, the conventional hot water heat preservation pipe can adopt steel pipes coated with an anti-corrosion layer, and in the field construction, a proper number of steel pipes are selected according to the length of a required paving distance, and two adjacent sections of steel pipes are welded in sequence, wherein the specific welding process is as follows:
1. firstly, welding two adjacent sections of steel pipes by welding equipment;
2. and then coating the inner wall of the joint of the two adjacent sections of steel pipes by coating equipment.
Repeating the steps for a plurality of times to finish the laying of the hot water heat preservation pipe. During welding, the original anti-corrosion layer of the inner wall of the welding part can be damaged by the high temperature in the welding process, so that the anti-corrosion layer of the inner wall of the welding part needs to be repaired after welding. In this way, on one hand, the prior coating technology is limited, coating treatment cannot be immediately carried out between two adjacent sections of steel pipes after welding treatment, the coating operation can be carried out after waiting for a period of time after the welding treatment is finished, on the other hand, the length of the prior coating equipment is within the range of 10-15 m, meanwhile, the length of each section of steel pipe is 12 m, the single welding operation time is twelve hours, and the single coating operation time is two hours, so that the operation distance is short, the operation time is long, and the coating equipment is high in price, therefore, the paving process of simultaneously carrying out welding operation on a plurality of sections of steel pipes and then simultaneously carrying out coating operation on a plurality of sections of steel pipes cannot be realized, only welding operation and coating operation can be carried out on a previous section of steel pipes, and after the paving operation of the previous section of steel pipes is finished, the welding operation and the paving operation of the next section of steel pipes can be carried out, and the paving operation of the next section of steel pipes can be finished, and therefore, the paving period of hot water heat preservation pipes can be greatly influenced by the construction process.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the technical problem of long laying period of the existing hot water heat preservation pipe, the invention provides the hot water heat preservation pipe and the butt welding method thereof, and the laying period of the hot water heat preservation pipe can be shortened by improving the structure of the hot water heat preservation pipe.
The technical scheme adopted for solving the technical problems is as follows: a hot water insulated pipe comprising: welded part and multistage body, multistage the body is from left to right connected gradually, every section the body all includes: the device comprises a middle pipe body, a left pipe body and a right pipe body, wherein the left pipe body and the right pipe body are respectively arranged at two sides of the middle pipe body, and the inner wall of the middle pipe body is coated with an anti-corrosion layer; wherein, two adjacent sections of the pipe bodies are connected through the welding part.
From this, connect the multistage body from left to right in proper order through the welded part, can realize the laying of hot water heat preservation pipe, compare in the laying mode that one section body welded operation before the coating operation earlier, only weld and can lay the laying mode that multistage body was laid simultaneously: the anti-corrosion coating process after the welding operation process is omitted, the laying time of a single pipeline is shortened by one seventh, the laying period of the hot water heat preservation pipe can be shortened, and the economic benefit is obviously improved; the anti-corrosion coating process after the welding operation process is canceled, the inner wall of the joint of two adjacent sections of pipe bodies is not damaged, and the anti-corrosion effect of the joint is not affected, compared with the traditional hot water heat preservation pipe, the service life of the hot water heat preservation pipe can reach thirty years; in the laying process of the hot water heat preservation pipe, only welding equipment is needed, and coating equipment is not needed, so that on one hand, the time consumed by repeatedly carrying the coating equipment can be saved, the laying period of the hot water heat preservation pipe is further shortened, on the other hand, the expense investment of the coating equipment is saved, and the laying cost of the hot water heat preservation pipe is reduced; the multi-section pipe body can be welded at the same time, after the welding operation of one section of pipe body is not needed, the welding operation of the pipe body at the next end is performed, and the laying period of the hot water heat preservation pipe is further shortened.
Further, the outer end face on the left side of the left pipe body and the outer end face on the right side of the right pipe body are welding surfaces, and the welding surfaces incline towards one side of the middle pipe body; when two adjacent sections of the pipe bodies are connected, a concave cavity is formed between the welding surface on the right pipe body of one pipe body and the welding surface on the left pipe body of the other pipe body.
Further, the welding portion includes: the first welding layer and the second welding layer, first welding layer the second welding layer all sets up to the ring form, first welding layer is located in the cavity, the second welding layer covers on the first welding layer.
Further, the left side and the right side of the second welding layer extend to the outside of the concave cavity, the left side of the second welding layer is connected with the outer peripheral surface of the right pipe body of one pipe body, and the right side of the second welding layer is connected with the outer peripheral surface of the left pipe body of the other pipe body. From this, first welded layer is located in the cavity to weld two sections adjacent body from the circumference direction of body, the second welded layer covers on first welded layer, and welds two sections adjacent body from the circumference direction of body, and first welded layer, second welded layer are complete round, and not one section, can improve the welding effect of body.
Further, the lengths of the left pipe body and the right pipe body are L; wherein: l=120 mm. Therefore, the lengths of the left pipe body and the right pipe body are not suitable to be too small or too large, when the lengths are welded, the corrosion-resistant layer at the joint of the middle pipe body and the left pipe body and the right pipe body can be caused to fall off, the falling corrosion-resistant layer is required to be repaired subsequently, the materials can be wasted excessively, and the production cost of the hot water heat preservation pipe is increased.
Further, the thicknesses of the middle pipe body are D1, the thickness of the anti-corrosion layer is D2, and the thicknesses of the left pipe body and the right pipe body are D3; wherein: d1+d2=d3. Therefore, in the fluid conveying process, the fluid is stably transited in the transition area between the left pipe body and the middle pipe body and the transition area between the middle pipe body and the right pipe body, so that fluctuation can not occur when the fluid flows in the transition area between the left pipe body and the middle pipe body and the transition area between the middle pipe body and the right pipe body, the fluid conveying time can be further shortened, and the energy consumption loss in the fluid conveying process is reduced.
Further, the middle pipe body is made of carbon steel, and the left pipe body and the right pipe body are made of stainless steel. Therefore, the inner walls of the left pipe body and the right pipe body made of stainless steel are smooth and are not easy to corrode, so that corrosion-resistant treatment is not required to be carried out on the inner walls of the left pipe body and the right pipe body, the resistance born by the fluid can be reduced in the fluid conveying process, the fluid conveying time is shortened, and meanwhile, the energy consumption loss in the fluid flowing process can be reduced; the middle section of the pipe body adopts a steel pipe made of carbon steel, and the two ends of the pipe body adopt stainless steel pipes, so that the laying period of the hot water heat preservation pipe can be shortened, the production cost of the hot water heat preservation pipe can be reduced, and the economic benefit of the hot water heat preservation pipe is improved.
The invention also provides a butt welding method of the hot water heat preservation pipe, which comprises the following steps:
s1, preparing a pipe body;
s2, carrying the multi-section pipe body prepared in the step S1 to a construction site needing to be paved, sequentially abutting the multi-section pipe body from left to right, and enabling the multi-section pipe body to be positioned on the same axis;
s3, welding the joints of the pipe bodies of a plurality of adjacent two sections in the pipe bodies through a plurality of welding devices so as to obtain the hot water heat-insulation pipe. Therefore, the welding operation can be performed on the multi-section pipe body at the same time, the welding operation is performed on the pipe body at the next end after the welding operation of the one-section pipe body is completed, and the laying period of the hot water heat preservation pipe is further shortened.
Further, the step S1 includes the steps of:
s1-1, cutting the left side surface of a left pipe body through cutting equipment to obtain the left pipe body with a welding surface;
s1-2, coating the inside of the middle pipe body through coating equipment to obtain the middle pipe body with the anti-corrosion layer;
s1-3, cutting the right side face of the right pipe body through cutting equipment to obtain the right pipe body with a welding face;
s1-4, placing the left pipe body with the welding surface obtained in the step S1-1, the middle pipe body with the anti-corrosion layer obtained in the step S1-2 and the right pipe body with the welding surface obtained in the step S1-3 in sequence from left to right, and performing welding treatment on the connection part between the left pipe body and the middle pipe body and the connection part between the middle pipe body and the right pipe body through welding equipment to obtain the pipe body.
Further, the step S3 includes the steps of:
s3-1, performing first welding treatment on the joint between two adjacent sections of pipe bodies through welding equipment to form a first welding layer;
s3-2, performing secondary welding treatment on the joint between two adjacent sections of the pipe bodies through welding equipment to form a second welding layer covered on the first welding layer, so as to obtain the hot water heat insulation pipe.
Compared with the prior art, the invention has the beneficial effects that:
connect the multistage body from left to right in proper order through the welded part, can realize laying of hot water heat preservation pipe, compare in the laying mode of one section body welding operation before coating operation earlier, only weld and can lay the laying mode of multistage body simultaneously:
1. the anti-corrosion coating process after the welding operation process is omitted, the laying time of a single pipeline is shortened by one seventh, the laying period of the hot water heat preservation pipe can be shortened, and the economic benefit is obviously improved.
2. The anti-corrosion coating process after the welding operation process is canceled, the inner wall of the joint of two adjacent sections of pipe bodies cannot be damaged, and the anti-corrosion effect of the joint cannot be affected.
3. In the laying process of the hot water heat preservation pipe, only welding equipment is needed, coating equipment is not needed, on one hand, the time consumed by repeatedly carrying the coating equipment can be saved, the laying period of the hot water heat preservation pipe is further shortened, on the other hand, the expense investment of the coating equipment is saved, and the laying cost of the hot water heat preservation pipe is reduced.
4. The multi-section pipe body can be welded at the same time, after the welding operation of one section of pipe body is not needed, the welding operation of the pipe body at the next end is performed, and the laying period of the hot water heat preservation pipe is further shortened.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a hot water insulating tube according to the present invention;
FIG. 2 is a schematic cross-sectional view of a hot water insulating tube according to the present invention;
FIG. 3 is an enlarged schematic view of the partial structure of FIG. 2A according to the present invention;
FIG. 4 is a schematic view of an abutting structure of two adjacent sections of pipe bodies;
FIG. 5 is a cross-sectional view of two adjacent sections of pipe body of the present invention in abutment;
FIG. 6 is a schematic view of a pipe body according to the present invention
FIG. 7 is a flow chart of a butt welding method of the hot water insulated pipe of the present invention;
FIG. 8 is a flow chart of step S1 of the present invention;
fig. 9 is a flowchart of step S3 of the present invention.
In the figure: 1. a welding part; 101. a first weld layer; 102. a second weld layer; 2. a tube body; 201. a middle tube body; 2011. an anti-corrosion layer; 202. a left tube body; 203. a right tube body; 204. a welding surface; 3. a cavity; 100. a hot water heat preservation pipe.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 6, the present invention provides a hot water thermal insulation pipe 100 comprising: the welding part 1 and the multistage body 2, multistage body 2 are from left to right to be connected in proper order, and every section body 2 all includes: the middle pipe body 201, the left pipe body 202 and the right pipe body 203 are respectively arranged at two sides of the middle pipe body 201, and the inner wall of the middle pipe body 201 is coated with an anticorrosive layer 2011; wherein, two adjacent sections of pipe bodies 2 are connected through a welding part 1. From this, connect multistage body 2 from left to right in proper order through welding portion 1, can realize laying of hot water heat preservation pipe, compare in the laying mode that one section body 2 welded operation before coating operation earlier, only weld and can lay multistage body 2 simultaneously: the anti-corrosion coating process after the welding operation process is omitted, the laying time of a single pipeline is shortened by one seventh, the laying period of the hot water heat preservation pipe can be shortened, and the economic benefit is obviously improved; the anti-corrosion coating process after the welding operation process is canceled, the inner wall of the joint of two adjacent sections of pipe bodies 2 is not damaged, and the anti-corrosion effect of the joint is not affected, compared with the traditional hot water heat preservation pipe, the service life of the hot water heat preservation pipe can reach thirty years; in the laying process of the hot water heat preservation pipe, only welding equipment is needed, and coating equipment is not needed, so that on one hand, the time consumed by repeatedly carrying the coating equipment can be saved, the laying period of the hot water heat preservation pipe is further shortened, on the other hand, the expense investment of the coating equipment is saved, and the laying cost of the hot water heat preservation pipe is reduced; the multi-section pipe body 2 can be welded at the same time, after the welding operation of one section of pipe body 2 is not needed, the welding operation of the pipe body 2 at the next end is performed, and the laying period of the hot water heat preservation pipe is further shortened.
In other words, only a single pipe body 2 is paved, the paving period can be shortened by one seventh, if a plurality of sections of pipe bodies 2 are paved at the same time, the paving period is shortened more obviously, and the economic benefit is improved more obviously; the hot water heat preservation pipe is commonly used in city heating equipment, and its external ambient temperature is lower, and pipeline internal ambient temperature is higher, only carries out welding operation, need not the coating operation, can improve the tolerance degree of hot water heat preservation pipe, ensures that the junction of two sections adjacent body 2 can not fracture because of the corruption, and then can prolong the life of hot water heat preservation pipe.
In this embodiment, the outer end surface on the left side of the left tube 202 and the outer end surface on the right side of the right tube 203 are both welding surfaces 204, and the welding surfaces 204 are inclined toward one side of the middle tube 201; when two adjacent pipe bodies 2 are connected, a concave cavity 3 is formed between the welding surface 204 on the right pipe body 203 of one pipe body 2 and the welding surface 204 on the left pipe body 202 of the other pipe body 2.
In the present embodiment, the welded portion 1 includes: the first welding layer 101 and the second welding layer 102, the first welding layer 101 and the second welding layer 102 are all arranged in a circular ring shape, the first welding layer 101 is located in the concave cavity 3, the second welding layer 102 covers the first welding layer 101, the left side and the right side of the second welding layer 102 extend to the outside of the concave cavity 3, the left side of the second welding layer 102 is connected with the outer peripheral surface of the right pipe body 203 of one pipe body 2, and the right side of the second welding layer 102 is connected with the outer peripheral surface of the left pipe body 202 of the other pipe body 2. From this, first welded layer 101 is located cavity 3 to weld two sections adjacent body 2 from the circumferencial direction of body 2, second welded layer 102 covers on first welded layer 101, and welds two sections adjacent body 2 from the circumferencial direction of body 2, and first welded layer 101, second welded layer 102 are complete round, and not one section, can improve the welding effect of body 2.
In this embodiment, the lengths of the left tube 202 and the right tube 203 are L; wherein: l=120 mm. Therefore, the lengths of the left pipe 202 and the right pipe 203 are not too small or too large, so that the corrosion-resistant layer 2011 at the joint of the middle pipe 201 and the left pipe 202 and the right pipe 203 falls off when the lengths are welded, the fallen corrosion-resistant layer 2011 needs to be repaired later, the materials are wasted too much, and the production cost of the hot water heat preservation pipe is increased.
In the embodiment, the thickness of the middle pipe 201 is D1, the thickness of the anti-corrosion layer 2011 is D2, and the thicknesses of the left pipe 202 and the right pipe 203 are D3; wherein: d1+d2=d3. Thus, in the fluid conveying process, the fluid is smoothly transited in the transition region between the left pipe body 202 and the middle pipe body 201 and the transition region between the middle pipe body 201 and the right pipe body 203, so that the fluid is ensured not to fluctuate when flowing in the transition region between the left pipe body 202 and the middle pipe body 201 and the transition region between the middle pipe body 201 and the right pipe body 203, the fluid conveying time can be further shortened, and the energy consumption loss in the fluid conveying process is reduced.
In this embodiment, the middle tube 201 is made of carbon steel, and the left tube 202 and the right tube 203 are made of stainless steel. Therefore, the inner walls of the left pipe body 202 and the right pipe body 203 made of stainless steel are smooth and are not easy to corrode, so that corrosion prevention treatment is not required for the inner walls of the left pipe body 202 and the right pipe body 203, the resistance born by the fluid can be reduced, the fluid conveying time is shortened, and meanwhile, the energy consumption loss in the fluid flowing process can be reduced; the middle section of the pipe body 2 adopts a steel pipe made of carbon steel, and the two ends of the pipe body adopt stainless steel pipes, so that the laying period of the hot water heat preservation pipe can be shortened, the production cost of the hot water heat preservation pipe can be reduced, and the economic benefit of the hot water heat preservation pipe is improved.
As shown in fig. 7 to 9, the invention further provides a butt welding method of the hot water insulation pipe, which comprises the following steps:
s1, preparing a pipe body 2;
s2, carrying the multi-section pipe body 2 prepared in the step S1 to a construction site needing to be paved, sequentially abutting the multi-section pipe body 2 from left to right, and enabling the multi-section pipe body 2 to be positioned on the same axis;
and S3, welding the connection parts of a plurality of adjacent two sections of pipe bodies 2 in the multi-section pipe body 2 through a plurality of welding devices at the same time to obtain the hot water heat preservation pipe 100. Therefore, the welding operation can be performed on the multi-section pipe body 2 at the same time, the welding operation is performed on the pipe body 2 at the next end after the welding operation of the one-section pipe body 2 is not needed, and the laying period of the hot water heat preservation pipe is further shortened.
Specifically, the welding operation performed on the multi-stage pipe body 2 at the same time means: simultaneously, the welding operation is performed on the multi-section pipe body 2 of the hot water heat preservation pipe, but not on all the pipe bodies 2 of the hot water heat preservation pipe.
In the present embodiment, step S1 includes the steps of:
s1-1, cutting the left side surface of the left pipe body 202 through cutting equipment to obtain the left pipe body 202 with a welding surface 204;
s1-2, coating the inside of the middle pipe body 201 through coating equipment to obtain the middle pipe body 201 with the anticorrosive layer 2011;
s1-3, cutting the right side surface of the right pipe body 203 through cutting equipment to obtain the right pipe body 203 with a welding surface 204;
s1-4, placing the left pipe body 202 with the welding surface 204 obtained in the step S1-1, the middle pipe body 201 with the anticorrosive layer 2011 obtained in the step S1-2 and the right pipe body 203 with the welding surface 204 obtained in the step S1-3 in sequence from left to right, and performing welding treatment on the connection part between the left pipe body 202 and the middle pipe body 201 and the connection part between the middle pipe body 201 and the right pipe body 203 through welding equipment to obtain a pipe body 2.
In the present embodiment, step S3 includes the steps of:
s3-1, performing first welding treatment on the joint between two adjacent sections of pipe bodies 2 through welding equipment to form a first welding layer 101;
s3-2, performing secondary welding treatment on the joint between two adjacent sections of pipe bodies 2 through welding equipment to form a second welding layer 102 covered on the first welding layer 101, so as to obtain the hot water heat insulation pipe 100.
It should be noted that: 1. one pipe body 2 of the adjacent two sections of pipe bodies 2 close to the left is marked as an A pipe body 2, one pipe body 2 close to the right is marked as a B pipe body 2, the A pipe body 2 is positioned at the left side of the B pipe body 2, in the embodiment, one pipe body 2 is the A pipe body 2, and the other pipe body 2 is the B pipe body 2;
2. when the A pipe body 2 is abutted against the B pipe body 2, the A pipe body 2 and the B pipe body 2 cannot be completely contacted due to the existence of the welding surface 204, and a containing cavity facing the axial line of the pipe body 2 exists, wherein the containing cavity is a concave cavity 3;
3. during welding, since the path of the welding operation is circular (i.e., the welding operation is performed while traveling around the circumferential direction of the pipe body 2), the welding operation completion area needs to wait for the welding apparatus to rotate once and then contact the welding operation completion area again, and during this time, the welding operation completion area can be naturally cooled and formed.
To sum up, the multi-section pipe body 2 is sequentially connected from left to right through the welding part 1, so that the laying of the hot water insulation pipe can be realized, and compared with the laying mode of first welding operation and then coating operation of the one-section pipe body 2, the laying mode of only welding and simultaneously laying the multi-section pipe body 2 is as follows:
1. the anti-corrosion coating process after the welding operation process is omitted, the laying time of a single pipeline is shortened by one seventh, the laying period of the hot water heat preservation pipe can be shortened, and the economic benefit is obviously improved.
2. The anti-corrosion coating process after the welding operation process is canceled, the inner wall of the joint of two adjacent sections of pipe bodies 2 is not damaged, and the anti-corrosion effect of the joint is not affected, so that the service life of the hot water heat preservation pipe can reach thirty years compared with that of a traditional hot water heat preservation pipe.
3. In the laying process of the hot water heat preservation pipe, only welding equipment is needed, coating equipment is not needed, on one hand, the time consumed by repeatedly carrying the coating equipment can be saved, the laying period of the hot water heat preservation pipe is further shortened, on the other hand, the expense investment of the coating equipment is saved, and the laying cost of the hot water heat preservation pipe is reduced.
4. The multi-section pipe body 2 can be welded at the same time, after the welding operation of one section of pipe body 2 is not needed, the welding operation of the pipe body 2 at the next end is performed, and the laying period of the hot water heat preservation pipe is further shortened.
The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined as the scope of the claims.
Claims (10)
1. A hot water insulating tube, comprising:
welding part (1) and multistage body (2), multistage body (2) are from left to right in proper order connected, every section body (2) all include:
the novel pipeline comprises a middle pipe body (201), a left pipe body (202) and a right pipe body (203), wherein the left pipe body (202) and the right pipe body (203) are respectively arranged on two sides of the middle pipe body (201), and an anti-corrosion layer (2011) is coated on the inner wall of the middle pipe body (201);
wherein two adjacent sections of the pipe bodies (2) are connected through the welding part (1).
2. The hot water insulation pipe according to claim 1, wherein the outer end surface on the left side of the left pipe body (202) and the outer end surface on the right side of the right pipe body (203) are both welding surfaces (204), and the welding surfaces (204) are inclined towards one side of the middle pipe body (201);
when two adjacent sections of the pipe bodies (2) are connected, a concave cavity (3) is formed between the welding surface (204) on the right pipe body (203) of one pipe body (2) and the welding surface (204) on the left pipe body (202) of the other pipe body (2).
3. A hot water insulated pipe according to claim 2, characterized in that the weld (1) comprises: the welding device comprises a first welding layer (101) and a second welding layer (102), wherein the first welding layer (101) and the second welding layer (102) are arranged in a circular shape, the first welding layer (101) is located in the concave cavity (3), and the second welding layer (102) is covered on the first welding layer (101).
4. A hot water insulated pipe according to claim 3, wherein both the left and right sides of the second welding layer (102) extend to the outside of the cavity (3), the left side of the second welding layer (102) is connected to the outer peripheral surface of the right pipe body (203) of one pipe body (2), and the right side of the second welding layer (102) is connected to the outer peripheral surface of the left pipe body (202) of the other pipe body (2).
5. The hot water insulation pipe according to claim 1, wherein the lengths of the left pipe body (202) and the right pipe body (203) are L; wherein: l=120 mm.
6. The hot water insulation pipe according to claim 1, wherein the thickness of the middle pipe body (201) is D1, the thickness of the anti-corrosion layer (2011) is D2, and the thickness of the left pipe body (202) and the right pipe body (203) is D3; wherein: d1+d2=d3.
7. The hot water insulating pipe according to claim 1, wherein the middle pipe body (201) is made of carbon steel, and the left pipe body (202) and the right pipe body (203) are made of stainless steel.
8. A butt welding method of a hot water insulated pipe according to any one of claims 1 to 7, comprising the steps of:
s1, preparing a pipe body (2);
s2, carrying the prepared multi-section pipe body (2) in the step S1 to a construction site needing to be paved, sequentially abutting the multi-section pipe body (2) from left to right, and enabling the multi-section pipe body (2) to be positioned on the same axis;
s3, welding the connection parts of a plurality of adjacent two sections of the pipe bodies (2) in the pipe bodies (2) through a plurality of welding devices so as to obtain the hot water heat preservation pipe (100).
9. The butt welding method of the hot water insulated pipe according to claim 8, wherein the step S1 includes the steps of:
s1-1, cutting the left side surface of a left pipe body (202) through cutting equipment to obtain the left pipe body (202) with a welding surface (204);
s1-2, coating the inside of the middle pipe body (201) through coating equipment to obtain the middle pipe body (201) with an anticorrosive layer (2011);
s1-3, cutting the right side surface of the right pipe body (203) through cutting equipment to obtain the right pipe body (203) with a welding surface (204);
s1-4, placing the left pipe body (202) with the welding surface (204) obtained in the step S1-1, the middle pipe body (201) with the anti-corrosion layer (2011) obtained in the step S1-2 and the right pipe body (203) with the welding surface (204) obtained in the step S1-3 in sequence from left to right, and performing welding treatment on the connection part between the left pipe body (202) and the middle pipe body (201) and the connection part between the middle pipe body (201) and the right pipe body (203) through welding equipment to obtain the pipe body (2).
10. The butt welding method of the hot water insulated pipe according to claim 8, wherein the step S3 includes the steps of:
s3-1, performing first welding treatment on the joint between two adjacent sections of the pipe bodies (2) through welding equipment to form a first welding layer (101);
s3-2, performing secondary welding treatment on the joint between two adjacent sections of the pipe bodies (2) through welding equipment to form a second welding layer (102) covered on the first welding layer (101) so as to obtain the hot water heat preservation pipe (100).
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| CN202311757863.9A CN117432870A (en) | 2023-12-20 | 2023-12-20 | Hot water heat preservation pipe and butt welding method thereof |
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| CN202311757863.9A CN117432870A (en) | 2023-12-20 | 2023-12-20 | Hot water heat preservation pipe and butt welding method thereof |
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