CN113864573A - Prefabricated overhead soft heat-insulation pipe system, manufacturing method and transportation and installation method - Google Patents
Prefabricated overhead soft heat-insulation pipe system, manufacturing method and transportation and installation method Download PDFInfo
- Publication number
- CN113864573A CN113864573A CN202111252850.7A CN202111252850A CN113864573A CN 113864573 A CN113864573 A CN 113864573A CN 202111252850 A CN202111252850 A CN 202111252850A CN 113864573 A CN113864573 A CN 113864573A
- Authority
- CN
- China
- Prior art keywords
- pipe
- insulation
- heat
- working
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 104
- 238000009434 installation Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 59
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 239000011241 protective layer Substances 0.000 claims abstract description 14
- 239000004964 aerogel Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011491 glass wool Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 3
- 235000019792 magnesium silicate Nutrition 0.000 claims description 3
- 239000000391 magnesium silicate Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 17
- 239000012774 insulation material Substances 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000009659 non-destructive testing Methods 0.000 abstract description 5
- 238000009417 prefabrication Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000011810 insulating material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a prefabricated overhead soft heat-insulation pipe system, a manufacturing method and a transportation and installation method, wherein the prefabricated overhead soft heat-insulation pipe system comprises a working pipe, a composite heat-insulation layer, an outer protective layer and a vertical heat-insulation pipe bracket; the working pipe is provided with a plurality of working pipes which are coaxially welded and connected, the vertical heat insulation pipe bracket is installed on the corresponding working pipe, the composite heat insulation layer wraps the corresponding parts of the working pipes and the vertical heat insulation pipe bracket, and the outer protective layer wraps the corresponding parts of the composite heat insulation layer and the vertical heat insulation pipe bracket. Compared with the traditional field manufacturing, the factory prefabrication does not produce waste materials, the pipeline can be utilized completely, no stub bar exists, the heat insulation material is not wasted, the heat insulation material is basically lossless, the field installation and construction speed is high, the construction period is short, the workload of field nondestructive testing is reduced, the comprehensive energy consumption is reduced, the energy utilization rate is improved, the transportation and the installation are convenient, and the soft heat insulation pipe is not easy to damage.
Description
Technical Field
The invention belongs to the technical field of steam pipeline construction, and particularly relates to a prefabricated overhead soft heat-insulating pipe system, a manufacturing method and a transportation and installation method.
Background
In the engineering design process of a heating power pipe network, the traditional heat supply network overhead pipe adopts a construction site to carry out heat preservation, and the construction mode has the following problems:
1. most overhead pipes are located outdoors, and the heat insulation construction is seriously influenced by weather.
2. The heat-insulating material occupies a large area, is easy to be affected with damp and damaged by worms, is not easy to store, increases the management cost, has more heat-insulating waste materials and is serious in site waste. The redundant heat-insulating materials are time-consuming and labor-consuming and increase the cost if the heat-insulating materials are dispatched to other sites or returned to a store of a company.
3. The field construction time is long, and the construction quality is difficult to guarantee.
4. The field nondestructive testing workload is large.
5. The soft heat-insulating material is generally pressed to joint and wraps a working pipeline, and the joint is easy to generate gaps when the soft heat-insulating material runs for a long time, so that the heat-insulating effect is influenced. The outer jacket generally adopts rivet connection, has the gap, and sleet weather, the gap is easy to seep water, causes inside heat preservation inefficacy, and prefabricated overhead pipe life-span reduces.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the prefabricated overhead soft heat-insulation pipe system, the manufacturing method and the transportation and installation method can reduce waste of raw materials, improve field installation speed and help to prolong the service life of a pipeline.
The invention is realized by the following steps: a prefabricated overhead soft heat-insulating pipe system comprises a working pipe, a composite heat-insulating layer, an outer protective layer and a vertical heat-insulating pipe support; the working pipe is provided with a plurality of working pipes which are coaxially welded and connected, the vertical heat insulation pipe bracket is installed on the corresponding working pipe, the composite heat insulation layer wraps the corresponding parts of the working pipes and the vertical heat insulation pipe bracket, and the outer protective layer wraps the corresponding parts of the composite heat insulation layer and the vertical heat insulation pipe bracket.
Furthermore, the composite heat-insulating layer comprises a heat-insulating layer and a reflecting layer, wherein the heat-insulating layer and the reflecting layer are alternately provided with a plurality of layers, and the heat-insulating layer is formed by combining one or more of nano aerogel, an aluminum silicate needled blanket, a magnesium silicate heat-insulating blanket and glass wool; the reflecting layer is formed by compounding aluminum foil and glass fiber cloth through temperature-resistant glue.
Further, vertical thermal-insulated conduit saddle includes clamp, lower conduit saddle, connection curb plate and thermal-insulated portion, be provided with the locating hole on the two risers of lower conduit saddle, the clamp is provided with at least two sets ofly in pairs, and every links to each other through the bolt between to the clamp, its bottom with lower conduit saddle is connected, links to each other through connecting the curb plate between the clamp of same one side, thermal-insulated portion sets up between clamp and the working pipe.
Further, the heat insulation part comprises a heat insulation coating layer, a nano aerogel layer and a heat insulation tile block; the heat insulation coating layer, the nano aerogel layer and the heat insulation tile are sequentially arranged in a layered mode from inside to outside.
The invention also provides a manufacturing method of the prefabricated overhead soft heat-insulation pipe system, which is used for manufacturing the prefabricated overhead soft heat-insulation pipe system and comprises the following steps:
s1, processing the working pipes according to the preset size and sequentially and coaxially connecting the working pipes;
s2, mounting the vertical heat insulation pipe bracket on the corresponding working pipe;
and S3, sequentially wrapping the composite heat-insulation layer and the outer protective layer on the working pipe.
Further, the processing working tube according to preset size and coaxial continuous in proper order include:
s101, detecting the size, the out-of-roundness, the appearance, the surface corrosion grade and the bending degree of the pipe, and carrying out the next step when the pipe is qualified;
s102, cutting the pipe into a plurality of sections of working pipes according to the pipe matching requirement;
s103, carrying out rust removal treatment on the working pipe;
s104, butt welding the working pipe;
s105, welding detection is carried out on the working pipe;
and S106, performing anti-corrosion treatment on the working pipe.
Further, wrap up compound thermal insulation layer and outer jacket in proper order on the working pipe includes:
s301, spirally winding a composite heat-insulation layer on the outer surface of the working pipe to wrap the working pipe and the corresponding parts of the vertical heat-insulation pipe bracket;
s302, wrapping the outer protective layer at corresponding positions of the composite heat-insulation layer and the vertical heat-insulation pipe support in an overlapping mode, wherein the overlapping size is 10-20 mm, and the seam formed by overlapping is fixed by adopting a connecting piece except for a movable seam.
The invention also provides a transportation and installation method of the prefabricated overhead soft heat insulation pipe system, which is used for installing the prefabricated overhead soft heat insulation pipe system and comprises the following steps:
s1, fixing the rest parts except the lower pipe support in the prefabricated overhead soft heat-insulation pipe system in a detachable cage;
s2, mounting the lower pipe bracket on a corresponding buttress according to the requirement of partial installation, wherein the partial installation of the lower pipe bracket is adjusted according to the positioning hole;
and S3, hoisting the detachable cage frame to the in-position pipe frame, and taking out the rest part of the prefabricated overhead soft heat-insulation pipe system to be connected with the lower pipe support.
Furthermore, the detachable cage comprises a top panel, a half, a connecting plate, a cross arm, a lifting lug, a fixed support, a cross rod and a middle support; the middle supports are arranged between the two fixing supports and are connected with the fixing supports through a plurality of cross rods to form a cage body;
the top panel is detachably mounted at the top of the cage body, the connecting plate and the cross arm are fixedly mounted inside the cage body, the connecting plate is located in the middle of a frame of the cage body, and the cross arm is located below the connecting plate; the half is detachably arranged on the connecting plate, and the lifting lug is arranged at the end part of the fixing support.
Further, the detachable cage further comprises a cross rod reinforcing plate, and the cross rod reinforcing plate is connected between the cross rods.
The invention has the following beneficial effects: compared with the traditional field manufacturing, the factory prefabrication does not produce waste materials, the pipeline can be utilized completely, no stub bar exists, the heat insulation material is not wasted, the heat insulation material is basically lossless, the field installation and construction speed is high, the construction period is short, the workload of field nondestructive testing is reduced, the comprehensive energy consumption is reduced, the energy utilization rate is improved, the transportation and the installation are convenient, and the soft heat insulation pipe is not easy to damage.
Drawings
FIG. 1 is a schematic view of the construction of a prefabricated overhead soft insulation piping system according to the present invention;
FIG. 2 is a sectional view of the composite thermal insulation layer of the prefabricated overhead soft insulation piping system shown in FIG. 1;
FIG. 3 is a side view of the vertical insulated pipe bracket of the prefabricated overhead soft insulation pipe system of FIG. 1;
FIG. 4 is a cross-sectional view of the prefabricated overhead soft insulation piping system shown in FIG. 1;
FIG. 5 is a schematic view of the structure of the fixed end of the removable cage of the present invention;
FIG. 6 is a schematic view of the removable cage of FIG. 5 during transport of a dual tube;
figure 7 is a schematic view of an intermediate support of the removable cage of figure 5;
FIG. 8 is a schematic view of the construction of the connecting rails and the rail stiffeners of the removable cage of FIG. 5;
FIG. 9 is a schematic view of the removable cage of FIG. 5 during transport of a single tube;
FIG. 10 is a schematic view of the installation of the prefabricated overhead soft insulation pipe of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example one
The steam temperature is 400 ℃, and the specification is DN600 working tube is taken as an example for explanation. Referring to fig. 1 to 4, a prefabricated overhead soft heat-insulating pipe system comprises a working pipe 1, a composite heat-insulating layer 2, an outer protective layer 3 and a vertical heat-insulating pipe bracket 4. The working pipe 1 is provided with a plurality of and coaxial welding links to each other, and vertical thermal-insulated conduit saddle 4 is installed on corresponding working pipe 1, and the corresponding position of compound thermal insulation layer 2 parcel working pipe 1 and vertical thermal-insulated conduit saddle 4, and the corresponding position of compound thermal insulation layer 2 and vertical thermal-insulated conduit saddle 4 is wrapped up to outer jacket 3.
The composite heat-insulating layer 2 comprises a heat-insulating layer 21 and a reflecting layer 22, the heat-insulating layer 21 and the reflecting layer 22 are alternately provided with a plurality of layers, and the heat-insulating layer 21 is formed by combining one or more of nano aerogel, an aluminum silicate needled blanket, a magnesium silicate heat-insulating blanket and glass wool; the reflecting layer 22 is formed by compounding aluminum foil and glass fiber cloth through temperature-resistant glue. The thickness of the aluminum foil is 0.015mm, and the specification of the glass fiber cloth is 230g/m2The alkali-free and wax-free cloth has the temperature-resistant glue which can resist the high temperature of 400 ℃,
the vertical heat-insulating pipe bracket 4 includes a clip 41, a lower pipe bracket 45, a connecting side plate 42, and a heat-insulating portion. The double vertical plates of the lower pipe bracket 45 are provided with positioning holes 44, and the distance between the positioning holes 44 is 200 mm. The clamps 41 are arranged in three groups at equal intervals in pairs, each pair of clamps 41 are connected through a bolt 43, the bottom end of each pair of clamps is connected with a lower pipe support 45 through a bolt, and a fixed connection bottom plate 49 is arranged at the joint of the bolts. The clips 41 on the same side are connected to each other by a connecting side plate 42, and a heat insulating portion is provided between the clips 41 and the working pipe 1.
The thermal insulation part comprises a thermal insulation coating layer 46, a nano aerogel layer 47 and a thermal insulation tile 48; the heat insulation coating layer 46, the nano aerogel layer 47 and the heat insulation tile 48 are sequentially arranged in layers from inside to outside.
The invention also provides a manufacturing method of the prefabricated overhead soft heat-insulation pipe system, which is used for manufacturing the prefabricated overhead soft heat-insulation pipe system and comprises the following steps:
and S1, machining the working pipe 1 according to the preset size and sequentially and coaxially connecting the working pipe 1. Specifically, the method comprises the following steps:
s101, detecting the size, the out-of-roundness, the appearance, the surface corrosion grade and the bending degree of the pipe, and carrying out the next step when the pipe is qualified.
And S102, cutting the pipe into a plurality of sections of working pipes 1 by adopting a full-automatic cutting numerical control machine tool according to the pipe matching requirement. The length of the working tube 1 is 12m, the linear speed of metal cutting is 300mm/s, the speed of the head of the pipeline cutting groove is 9 revolutions per minute, the power of a spindle motor is 4KW, and the rotating speed of the motor is 1450 revolutions per minute.
S103, performing shot blasting rust removal treatment on the working pipe 1 by adopting automatic rust removal equipment, wherein the rust removal grade reaches sa2.5 grade.
And S104, carrying out butt welding on the working pipe 1 by adopting automatic submerged arc welding.
And S105, welding detection is carried out on the working tube 1 by adopting RT radiography or CT ultrasonic detection, and the next step is carried out when the detection is qualified. The CT ultrasonic detection is adopted, the cost is low, the coupling agent is automatically coated and brushed, the ultrasonic detection induction head is in contact with the weld joint of the detected pipeline, the pipeline rotates at a constant speed, and the CT ultrasonic detector automatically records the detection result.
And S106, spraying an anticorrosive paint on the surface of the working pipe 1 for anticorrosive treatment.
And S2, mounting the vertical heat insulation pipe bracket 4 on the corresponding working pipe 1. Specifically, the two ends of the working pipe 1 are erected on a bracket, then the hoops 41 of the vertical heat insulation pipe bracket 4 which is qualified in inspection are connected through the bolts 43, and each hoop is fixedly connected through the fixed connecting side plate 42.
S3, sequentially wrapping the composite heat-insulating layer 2 and the outer protective layer 3 on the working pipe 1. Specifically, the method comprises the following steps:
s301, a large-pitch rotary winding mode is adopted, a strip-shaped coiled material is hung at the front end of the back of a machine tool body through a bracket and is pulled by the machine tool to rotate, the coiled material is automatically discharged from the bracket and is wound on corresponding parts of a working pipe 1 and a vertical heat insulation pipe support 4 to be insulated, a soft heat insulation layer 21 and a reflection layer 22 are wound in sequence and alternately, and the spiral angle is 15 degrees.
S302, wrapping the outer protective layer 3 at corresponding positions of the composite heat-insulation layer 2 and the vertical heat-insulation pipe bracket 4 in an overlapping mode, wherein the overlapping size is 10-20 mm, seams formed by overlapping are fastened by self-plugging rivets or self-tapping screws except for movable seams, the spacing is 160mm, and the number of the seams is not less than 5 within the length of 1 m.
As shown in fig. 5 to 10, the present invention further provides a transportation and installation method of a prefabricated overhead soft insulation pipe system, which is used for installing the prefabricated overhead soft insulation pipe system, and comprises the following steps:
s1, after prefabrication is completed in a factory, the rest parts except the lower pipe support 45 in the prefabricated overhead soft heat-preservation pipe system are fixed in a detachable cage, and the lower pipe support 45 is transported independently. As shown in fig. 5 to 8, the detachable cage comprises a top panel 5, a half 6, a connecting plate 7, a cross arm 8, a lifting lug 9, a fixed bracket 10, a cross bar 11 and an intermediate bracket 14. The fixed supports 10 are arranged at two ends, the middle support 14 is arranged in the middle of the two fixed supports 10 in a plurality, and the middle support is connected with the fixed supports 10 through a plurality of cross rods 11 to form a cage body. The position that middle support 14 was placed avoids connecting the diaphragm junction, and middle support 14 interval is 4 m. The middle support 14 and the fixed support 10 are made of 10# channel steel. Top panel 5 detachably installs at the top of cage body, and connecting plate 7 and cross arm 8 fixed mounting are in the inside of cage body, and connecting plate 7 is located the frame middle part of cage body, and cross arm 8 is located the below of connecting plate 7, plays the supporting role to the working tube. The half 6 is detachably mounted on the connecting plate 7, and the lifting lug 9 is mounted at the end part of the fixing bracket 10. The distance between the cross bar 11 and the connecting bolt holes 12 provided in the intermediate bracket 14 is 30 mm. The connecting bolt hole 12 is M16, and the fixing bolt 13 is phi 18. The size of the cross rod 11 is 3m according to the length of the prefabricated overhead soft heat-insulating pipe, and the prefabricated overhead soft heat-insulating pipe is made of unequal angle steel L10 & gt63. The detachable cage frame further comprises a cross rod reinforcing plate 15, the cross rod reinforcing plate 15 is connected between the cross rods 11, connection stability is improved, and the cross rod reinforcing plate 15 is 80cm in specification. The lifting lugs 9 are distributed on the fixed support 10 in 4 numbers, the upper part and the lower part are respectively distributed in 2 numbers, the distance between the two upper parts and the top panel 5 is 400mm, the two lower parts and the two upper parts are in axial symmetry distribution, and the lifting lugs 9 are shaft type lifting lugs AXA.
And S2, during field installation, installing the lower pipe bracket 45 on the corresponding buttress 17 according to the requirement of eccentric installation, and adjusting the eccentric installation of the lower pipe bracket 45 according to the positioning hole 44.
S3, the detachable cage is lifted to the in-place pipe frame by hooking the lifting lug 9 by a crane, then the bolts on the top panel 5 and the bolts on the half 6 are unscrewed after the two ends of the pipeline are welded, the top panel 5, the half 6 and other parts of the detachable cage are detached, and therefore the rest parts of the prefabricated overhead soft heat-insulation pipe system are taken out and then are connected with the lower pipe support 45. And returning the detachable cage frame to the factory for reuse.
Example two
Taking a working tube with steam temperature of 300 ℃ and specification of DN600 as an example, the difference between the embodiment and the first embodiment is that the thickness of the aluminum foil in the reflecting layer is 0.015mm, and the specification of the glass fiber cloth is 200g/m2The temperature-resistant glue can resist the high temperature of 300 ℃. The heat-insulating layer 21 is made of a combination of aluminum silicate needle-punched blankets and glass wool.
EXAMPLE III
The transmission speed of the pipe cutting groove head is related to the nominal diameter of the working pipe, and the specific values are as follows:
| numbering | Nominal diameter of pipe (DNmm) | Speed transmission speed per minute of cutting |
| 1 | 200 | 35 |
| 2 | 250 | 30 |
| 3 | 300 | 20 |
| 4 | 350 | 15 |
| 5 | 400 | 14 |
| 6 | 450 | 12 |
| 7 | 500 | 11 |
| 8 | 550 | 9 |
| 9 | 600 | 9 |
| 10 | 700 | 8 |
| 11 | 800 | 7 |
In the comparative example, the traditional method for preparing, transporting and installing the soft overhead pipe comprises the following steps:
the traditional method for preparing, transporting and installing the soft overhead pipe adopts a site heat insulation construction method, and firstly, the working pipe, the heat insulation material and each pipe fitting are respectively transported to a construction site.
Specifically, a pipe bracket with an upper clamp and a lower clamp is placed on a corresponding buttress according to the requirement of partial installation, then a working pipe is placed on the pipe bracket, a welder welds the interface of the working pipe, and the weld joint is subjected to nondestructive testing on site.
Specifically, on-site heat preservation needs to select non-rain and snow weather, construction is carried out in a heat preservation overlapping mode, leftover materials are easy to generate, and the management cost of redundant heat preservation materials is high.
Compared with the traditional field manufacturing, the factory prefabrication does not produce waste materials, the pipeline can be utilized completely, no stub bar exists, the heat insulation material is not wasted, the heat insulation material is basically lossless, the field installation and construction speed is high, the construction period is short, the workload of field nondestructive testing is reduced, the comprehensive energy consumption is reduced, the energy utilization rate is improved, the transportation and the installation are convenient, and the soft heat insulation pipe is not easy to damage.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A prefabricated overhead soft heat-insulation pipe system is characterized by comprising a working pipe (1), a composite heat-insulation layer (2), an outer protective layer (3) and a vertical heat-insulation pipe support (4); the heat insulation pipe is characterized in that the working pipe (1) is provided with a plurality of heat insulation pipe supports which are connected in a coaxial welding mode, the vertical heat insulation pipe support (4) is installed on the corresponding working pipe (1), the composite heat insulation layer (2) wraps corresponding positions of the working pipe (1) and the vertical heat insulation pipe support (4), and the outer protective layer (3) wraps corresponding positions of the composite heat insulation layer (2) and the vertical heat insulation pipe support (4).
2. The system for prefabricating the overhead soft insulation pipe according to claim 1, wherein the composite insulation layer (2) comprises an insulation layer (21) and a reflection layer (22), the insulation layer (21) and the reflection layer (22) are alternately provided with a plurality of layers, and the insulation layer (21) is formed by combining one or more of nano aerogel, aluminum silicate needled blanket, magnesium silicate insulation blanket and glass wool; the reflecting layer (22) is formed by compounding aluminum foil and glass fiber cloth through temperature-resistant glue.
3. The system for prefabricating an overhead soft heat-preservation pipe according to claim 1, wherein the vertical heat-insulation pipe bracket (4) comprises a hoop (41), a lower pipe bracket (45), a connecting side plate (42) and a heat-insulation part, wherein the double vertical plates of the lower pipe bracket (45) are provided with positioning holes (44), the hoops (41) are arranged in at least two groups in pairs, each pair of hoops (41) are connected through a bolt (43), the bottom ends of the hoops are connected with the lower pipe bracket (45), the hoops (41) on the same side are connected through the connecting side plate (42), and the heat-insulation part is arranged between the hoops (41) and the working pipe (1).
4. A prefabricated overhead soft insulation pipe system according to claim 3, characterized in that the insulation comprises a layer of insulation paint (46), a layer of nano-aerogel (47) and insulation tiles (48); the heat insulation coating layer (46), the nanometer aerogel layer (47) and the heat insulation tile block (48) are sequentially arranged in a layered mode from inside to outside.
5. A method of making a prefabricated overhead soft insulation piping system for making a prefabricated overhead soft insulation piping system of claim 1, comprising the steps of:
s1, processing the working pipe (1) according to the preset size and sequentially and coaxially connecting the working pipe and the working pipe;
s2, mounting the vertical heat-insulation pipe bracket (4) on the corresponding working pipe (1);
s3, sequentially wrapping the composite heat-insulation layer (2) and the outer protective layer (3) on the working pipe (1).
6. The method for manufacturing the prefabricated overhead soft insulation pipe system according to claim 5, wherein the step of processing the working pipe (1) according to the preset size and sequentially coaxially connecting the working pipe and the working pipe comprises the following steps:
s101, detecting the size, the out-of-roundness, the appearance, the surface corrosion grade and the bending degree of the pipe, and carrying out the next step when the pipe is qualified;
s102, cutting the pipe into a plurality of sections of working pipes (1) according to the pipe distribution requirement;
s103, carrying out rust removal treatment on the working pipe (1);
s104, butt welding the working pipe (1);
s105, welding detection is carried out on the working pipe (1);
s106, performing anti-corrosion treatment on the working pipe (1).
7. The manufacturing method of the prefabricated overhead soft heat-insulation pipe system according to claim 5, wherein the step of sequentially wrapping the composite heat-insulation layer (2) and the outer protective layer (3) on the working pipe (1) comprises the following steps:
s301, spirally winding the composite heat-insulating layer (2) on the outer surface of the working pipe (1) to wrap the corresponding parts of the working pipe (1) and the vertical heat-insulating pipe bracket (4);
s302, wrapping the outer protective layer (3) at corresponding positions of the composite heat-insulation layer (2) and the vertical heat-insulation pipe bracket (4) in an overlapping mode, wherein the overlapping size is 10-20 mm, and the seam formed by overlapping is fixed by adopting a connecting piece except for a movable seam.
8. A method for transporting and installing a prefabricated overhead soft insulation pipe system for installing the prefabricated overhead soft insulation pipe system of claim 1, comprising the steps of:
s1, fixing the rest parts except the lower pipe support (45) in the prefabricated overhead soft heat-insulation pipe system in a detachable cage;
s2, mounting the lower pipe support (45) on a corresponding buttress (17) according to the eccentric installation requirement, wherein the eccentric installation of the lower pipe support (45) is adjusted according to the positioning hole (44);
and S3, hoisting the detachable cage frame to the in-position pipe frame, and taking out the rest part of the prefabricated overhead soft heat-insulation pipe system to be connected with the lower pipe bracket (45).
9. The transportation and installation method of the prefabricated overhead soft insulation pipe system according to claim 8, wherein the detachable cage comprises a top panel (5), a haugh (6), a connecting plate (7), a cross arm (8), a lifting lug (9), a fixing bracket (10), a cross rod (11) and an intermediate bracket (14); the fixed supports (10) are arranged at two ends, a plurality of middle supports (14) are arranged between the two fixed supports (10), and are connected with the fixed supports (10) through a plurality of cross rods (11) to form a cage body;
the top panel (5) is detachably mounted at the top of the cage body, the connecting plate (7) and the cross arm (8) are fixedly mounted inside the cage body, the connecting plate (7) is located in the middle of a frame of the cage body, and the cross arm (8) is located below the connecting plate (7); the half (6) is detachably arranged on the connecting plate (7), and the lifting lug (9) is arranged at the end part of the fixing support (10).
10. The method for transporting and installing the prefabricated overhead soft insulation pipe system according to claim 9, wherein the detachable cage further comprises cross bar reinforcing plates (15), and the cross bar reinforcing plates (15) are connected between the cross bars (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252850.7A CN113864573A (en) | 2021-10-27 | 2021-10-27 | Prefabricated overhead soft heat-insulation pipe system, manufacturing method and transportation and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252850.7A CN113864573A (en) | 2021-10-27 | 2021-10-27 | Prefabricated overhead soft heat-insulation pipe system, manufacturing method and transportation and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113864573A true CN113864573A (en) | 2021-12-31 |
Family
ID=78998359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111252850.7A Pending CN113864573A (en) | 2021-10-27 | 2021-10-27 | Prefabricated overhead soft heat-insulation pipe system, manufacturing method and transportation and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113864573A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09163537A (en) * | 1995-08-18 | 1997-06-20 | Kansai Electric Power Co Inc:The | Pipe connection unit, pipe connection device and pipe connection method |
| CN101922596A (en) * | 2010-08-06 | 2010-12-22 | 王国兴 | Thermal insulation pipe support |
| CN207830730U (en) * | 2017-12-27 | 2018-09-07 | 广东固稳科技有限公司 | A kind of combined type installation suspension and support |
| US20200078981A1 (en) * | 2018-09-12 | 2020-03-12 | Johns Manville | Fiber reinforced aerogel insulation and method therefor |
| CN210196655U (en) * | 2019-07-12 | 2020-03-27 | 江苏龙英管道新材料有限公司 | Liftable heat insulation type pipe bracket |
| CN210372556U (en) * | 2019-06-05 | 2020-04-21 | 武汉市燃气热力规划设计院有限公司 | Fixed heat insulation pipe carrier for overhead heat distribution pipeline |
| CN111649194A (en) * | 2020-03-13 | 2020-09-11 | 江苏龙英管道新材料有限公司 | Automatic spiral winding device and method for prefabricated heat-insulation pipeline |
| CN211624604U (en) * | 2020-01-19 | 2020-10-02 | 江苏天润管业有限公司 | Energy-saving prefabricated overhead composite heat-insulating pipe and pipe bracket thereof |
| CN113266711A (en) * | 2021-05-12 | 2021-08-17 | 南京苏夏设计集团股份有限公司 | Prefabricated soft thermal insulation pipe |
| CN113531224A (en) * | 2021-08-06 | 2021-10-22 | 武汉德威工程技术有限公司 | Novel soft prefabricated overhead steam heat-preservation pipe and manufacturing method |
-
2021
- 2021-10-27 CN CN202111252850.7A patent/CN113864573A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09163537A (en) * | 1995-08-18 | 1997-06-20 | Kansai Electric Power Co Inc:The | Pipe connection unit, pipe connection device and pipe connection method |
| CN101922596A (en) * | 2010-08-06 | 2010-12-22 | 王国兴 | Thermal insulation pipe support |
| CN207830730U (en) * | 2017-12-27 | 2018-09-07 | 广东固稳科技有限公司 | A kind of combined type installation suspension and support |
| US20200078981A1 (en) * | 2018-09-12 | 2020-03-12 | Johns Manville | Fiber reinforced aerogel insulation and method therefor |
| CN210372556U (en) * | 2019-06-05 | 2020-04-21 | 武汉市燃气热力规划设计院有限公司 | Fixed heat insulation pipe carrier for overhead heat distribution pipeline |
| CN210196655U (en) * | 2019-07-12 | 2020-03-27 | 江苏龙英管道新材料有限公司 | Liftable heat insulation type pipe bracket |
| CN211624604U (en) * | 2020-01-19 | 2020-10-02 | 江苏天润管业有限公司 | Energy-saving prefabricated overhead composite heat-insulating pipe and pipe bracket thereof |
| CN111649194A (en) * | 2020-03-13 | 2020-09-11 | 江苏龙英管道新材料有限公司 | Automatic spiral winding device and method for prefabricated heat-insulation pipeline |
| CN113266711A (en) * | 2021-05-12 | 2021-08-17 | 南京苏夏设计集团股份有限公司 | Prefabricated soft thermal insulation pipe |
| CN113531224A (en) * | 2021-08-06 | 2021-10-22 | 武汉德威工程技术有限公司 | Novel soft prefabricated overhead steam heat-preservation pipe and manufacturing method |
Non-Patent Citations (2)
| Title |
|---|
| 柳金海: "《管道工程设计施工及维修实用技术大全7》", 31 August 1999, 中国建材工业出版社, pages: 5621 * |
| 陈宏振、相里梅琴、张丽娟: "《供热工程》", 30 September 2018, 中国矿业大学出版社, pages: 234 - 235 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201293179Y (en) | High temperature resistant type fabric expansion joint | |
| CN102756218B (en) | Benzene hydrogenation engineering heat resisting steel method for welding pipeline | |
| CN108443619B (en) | Method for mounting expansion joint of pressure steel pipe bellows of hydropower station | |
| CN101392518B (en) | Diversion conduit rapid construction method of large hydraulic turbines | |
| WO2009115050A1 (en) | Plane-welding flange pre-deforming mechanism | |
| CN113863346B (en) | Directly-buried steam pipeline caisson structure and construction method | |
| CN104308449A (en) | Technology for repairing big-caliber concrete pipeline lining by utilizing thin wall stainless steel | |
| CN113864573A (en) | Prefabricated overhead soft heat-insulation pipe system, manufacturing method and transportation and installation method | |
| CN212107191U (en) | Full-coated high-temperature heat-insulation fixed pipe carrier | |
| CN104075074A (en) | Detachable thermal insulation casing and assembling and installation method thereof | |
| CN107763372A (en) | Heavy in section circular pipe insulation and the construction method of installation of outer casing | |
| CN109058663A (en) | Pattern low energy consumption long heat transport net is slided in a kind of | |
| CN217291172U (en) | Steel pipeline butt joint adjusting device | |
| CN113028148A (en) | Internal sliding pipe support system and manufacturing method thereof | |
| CN212889042U (en) | Glass fiber reinforced plastic fiber winding pultrusion machine for cable protective sleeve | |
| RU2007120735A (en) | METHOD FOR REPAIR OF DEFECTIVE PIPELINES | |
| CN208845975U (en) | Pattern low energy consumption long heat transport net is slided in a kind of | |
| CN210818143U (en) | Special fixture for welding different-diameter steel pipe elbows | |
| CN203857202U (en) | Internal guide reflective insulation directly-buried prefabricated heat preservation steam pipe with supports | |
| CN206754701U (en) | One group of heat resistant and wear resistant damage smoke conveying duct with reflective coating | |
| CN113700987A (en) | Manufacturing and mounting method of direct-buried prefabricated steam insulation pipe | |
| CN206608617U (en) | The heat-insulated fixed support of heat-net-pipeline | |
| CN110849179A (en) | High-temperature high-pressure heat exchanger with temperature compensation and machining method thereof | |
| CN212868993U (en) | Low-energy-consumption assembled heat-insulation support ring | |
| CN204524591U (en) | A kind of hand prevents the device welding necking down |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211231 |