CN210800465U - Fixed pipe bracket for prefabricated finished product heat-insulating pipe - Google Patents
Fixed pipe bracket for prefabricated finished product heat-insulating pipe Download PDFInfo
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- CN210800465U CN210800465U CN201921213951.1U CN201921213951U CN210800465U CN 210800465 U CN210800465 U CN 210800465U CN 201921213951 U CN201921213951 U CN 201921213951U CN 210800465 U CN210800465 U CN 210800465U
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Abstract
The utility model discloses a fixed pipe bracket for a prefabricated finished product heat-insulating pipe, which comprises a core pipe, wherein the bottom of the core pipe is provided with a vertical supporting pipe, and the lower end of the supporting pipe is inserted into an outer sleeve arranged in a foundation structure; a soft heat-insulating layer, a hard heat-insulating layer, an organic foam heat-insulating layer and a metal outer protective layer are sequentially arranged on the outer side of the core pipe from inside to outside; the lengths of the soft heat-insulating layer, the hard heat-insulating layer and the organic foam heat-insulating layer are sequentially reduced and are arranged in the middle, and the metal outer protective layer is flush with the organic foam heat-insulating layer. The utility model discloses introduce three kinds of insulation material formation composite insulation structure of aluminium silicate, calcium silicate and polyurethane to the helical duct is the outer jacket, not only forms the strong composite insulation structure of overall stability, can effectively protect inside insulation material not receive external force to destroy moreover, and the leakproofness is strong, and no rainwater is immersed. The supporting pipe is matched with the outer sleeve, the side wall of the supporting pipe is grooved, and the soft heat-insulating material and the hard castable heat-insulating layer are filled in the supporting pipe, so that the heat loss of the pipe bracket is effectively reduced, and the overall heat-insulating performance of the pipeline is improved.
Description
Technical Field
The utility model relates to a fixed conduit saddle for prefabricated finished product insulating tube, in particular to a heat-proof device for fixing prefabricated built on stilts finished product insulating tube.
Background
In recent years, with the increasing requirements on energy conservation and emission reduction of industrial enterprises, the construction and development of thermal power plants and matched heat networks thereof are rapid, and novel prefabricated thermal insulation pipes are gradually popularized and applied in the industry. For example, when the steam pressure is 1.6MPa, the temperature is 300 ℃ and the external environment temperature is 14 ℃ like a steam conveying pipeline of DN400, the thermal displacement of each kilometer of the pipeline is about 380cm, which seriously exceeds the requirement of safe operation of the pipeline. In the presence of such large thermal displacements, even with the installation of the compensator, there is still a great challenge to the fixity of the fixed pipe bracket. Moreover, the gaps of the traditional pipe bracket are large, the strength of the heat insulation material is not high, the heat insulation performance is limited, and the heat insulation material is cracked, displaced or dropped after long-term operation, so that the heat loss of the heat insulation material is 30 percent or even higher than that of the whole pipe network. In order to reduce heat loss caused by pipe brackets and ensure the safety of a fixed point of a steam pipeline, various heat-insulating pipe brackets appear in the market successively, most of the heat-insulating pipe brackets are only suitable for the traditional steam pipeline adopting soft materials for heat insulation, while the fixed pipe brackets applied to the field of prefabricated heat-insulating pipes are reported.
SUMMERY OF THE UTILITY MODEL
The technical purpose of the utility model is to solve the fixed problem of finished product insulating tube fixed point in advance and the heat bridge phenomenon of current conduit saddle ubiquitous, provide a fixed conduit saddle for prefabricated finished product insulating tube, this fixed conduit saddle simple structure, easily processing, low cost, do benefit to the popularization.
The utility model aims at realizing through the following technical scheme:
a fixed pipe bracket for a prefabricated finished product heat-insulating pipe comprises a core pipe 1, wherein a vertical supporting pipe 6 is arranged at the bottom of the core pipe 1, and the lower end of the supporting pipe 6 is inserted into an outer sleeve 7 arranged in a foundation structure 9 so that the outer wall of the supporting pipe 6 is tightly attached to the inner wall of the outer sleeve 7; a soft heat-insulating layer 2, a hard heat-insulating layer 3 and an organic foam heat-insulating layer 4 are sequentially arranged on the outer side of the core pipe 1 from inside to outside to form a composite heat-insulating layer, an internal heat-insulating structure is tightly wrapped on a pipeline by the organic foam heat-insulating layer, and a metal outer protective layer 5 is arranged on the outer side of the composite heat-insulating layer to form a working pipe; soft heat preservation 2, stereoplasm insulating layer 3, 4 length of organic foam heat preservation reduce in proper order and set up between two parties and make the working tube both ends be the step form, 5 both ends of metal outer jacket and 4 parallel and level of organic foam heat preservation, not only form the insulation construction that has certain intensity, the wholeness is strong, be convenient for simultaneously with the trapezoidal heat preservation interface matching of prefabricated finished product heat preservation pipe straight tube section, fixed conduit saddle can not form the logical seam with straight tube section interface after the cooperation, can effectively reduce the heat loss.
The ratio of the length of the working pipe 1 to the pipe diameter is 4-6: 1. The diameter of the support tube 6 is about 1/2 of the diameter of the working tube 1.
Preferably, the support tube 6 and the outer sleeve 7 are both round tubes.
Preferably, the upper end of the support tube 6 is welded at the middle of the bottom of the working tube 1.
Preferably, the upper part of the support tube 6 is wrapped in the composite heat-insulating layer, and the height of the support tube 6 is 50-100 mm greater than the total thickness of the composite heat-insulating layer.
Preferably, the oval slot 12 is uniformly distributed on the side wall of the support tube 6, and the opening rate of the side wall of the support tube 6 is 20-40%; a closed inner cavity is formed between the supporting tube 6 and the upper working tube 1 and between the supporting tube 6 and the lower outer sleeve 7, and soft heat-insulating materials such as aluminum silicate heat-insulating cotton and glass wool are filled in the supporting tube 6; through the design, the strength of the supporting tube can be ensured, the heat transfer path is cut off, the heat transfer area is reduced, and the heat loss can be effectively reduced.
It is further preferred that two adjacent rows of oval slots 12 on the support tube 6 are staggered.
The length of the outer sleeve 7 is 100-200 mm; the inner diameter of the outer jacket tube 7 is matched to the outer diameter of the support tube 6.
Preferably, along the radial direction, a plurality of ribbed plates are uniformly arranged on the outer wall of the outer sleeve 7 to serve as reinforcing ribs 8, the thickness of each reinforcing rib 8 is not less than 10mm, and the number of the reinforcing ribs is not less than 4.
Preferably, the lower end of the outer sleeve 7 is poured into the foundation structure 9; and a hard castable heat-insulating layer 11 is formed by filling heat-insulating castable in the lower part of the outer sleeve 7, and the upper end surface of the outer sleeve 7 is 50-100 mm higher than the upper end surface of the hard castable heat-insulating layer 11.
The foundation structure 9 is a pier formed by pouring concrete.
The heat insulation material of the soft heat insulation layer 2 is aluminum silicate heat insulation cotton; the density of the aluminum silicate heat-insulating cotton is 128 +/-10 kg/m3The long-term temperature resistance is not lower than 900 ℃, and the heat conductivity coefficient at 25 ℃ meets the following requirements: lambda is less than or equal to 0.041 w/(m.k) @25 ℃.
The hard heat insulation layer 3 is formed by radially wrapping calcium silicate heat insulation tiles, and is in a tube shell shape. Preferably, every 3 sheets of calcium silicate insulation tiles are radially wrapped to form a circumference. The calcium silicate heat insulation tile is a microporous calcium silicate heat insulation material, and the density of the calcium silicate heat insulation tile is 200 +/-20 kg/m3The long-term temperature resistance is not lower than 650 ℃, the compressive strength is not less than 0.7MPa, and the heat conductivity coefficient meets the requirement：λ≤0.056w/(m·k)@25℃。
The material of the organic foam heat-insulating layer 4 is rigid polyurethane foam; the density of the hard polyurethane foam is 45 +/-5 kg/m3The compressive strength is more than or equal to 0.22MPa, and the heat conductivity coefficient at 25 ℃ meets the following requirements: lambda is less than or equal to 0.02 w/(m.k) @25 ℃.
The metal outer protective layer 5 is a spiral air pipe, and the caliber of the spiral air pipe is adjustable. The spiral air duct is a thin-wall spiral air duct formed by mechanically meshing metal sheets, the size precision is high, the rigidity is good, the joints are tightly meshed and watertight, and the metal sheets are galvanized iron sheets, thin aluminum plates or stainless steel plates with the thickness of 0.4-1.2 mm and the plate width of 100-200 mm.
Preferably, the length of the soft heat-insulating layer 2, the hard heat-insulating layer 3 and the organic foam heat-insulating layer 4 is shortened by 80-150 mm in sequence compared with the inner layer structure of the heat-insulating layer, and the soft heat-insulating layer 2, the hard heat-insulating layer 3, the organic foam heat-insulating layer 4 and the metal outer protective layer 5 are arranged in the middle so that the two ends of the working pipe are in a step shape.
The thickness of the soft heat-insulating layer is 10-30 mm, the thickness of the hard heat-insulating layer is 50-150 mm, the thickness of the organic foam heat-insulating layer is 20-50 mm, and the thickness of the metal outer protective layer 5 is 0.4-1.2 mm.
The soft heat-insulating layer 2 and the hard heat-insulating layer 3 are respectively fastened by galvanized steel strips, and the distance between two adjacent galvanized steel strips is not more than 20 cm.
Will the utility model discloses finished product heat preservation pipeline uses fixed conduit saddle in prefabricated built on stilts steam transport field in advance, a steam transport field is makeed to be used for fixed prefabricated insulating tube, the working pipe both ends that will fix the conduit saddle at the job site respectively with prefabricated insulating tube welding, the heat preservation of joint department has been handled in proper order, when having high temperature steam to flow in the working steel pipe, the working steel pipe can produce the heat displacement because of thermal expansion, this part displacement turns into horizontal thrust and acts on the stay tube structure, and transmit to the outer tube structure along the stay tube structure, again through the foundation structure of outer tube transmission to lower part, above-mentioned structural rigidity is strong, be enough to retrain the working pipe and take place the heat displacement, guarantee the stability of working pipe.
The utility model has the advantages as follows:
the utility model discloses finished product heat preservation pipeline is unanimous with prefabricated finished product pipe structure with fixed conduit saddle in advance, compact structure, fixed effectual, the wholeness is good, convenient transportation and field installation.
The utility model discloses three kinds of insulation material formation composite insulation structure of aluminium silicate, calcium silicate and polyurethane are introduced for the first time, and the aluminium silicate cotton is a flexible insulation material, and the calcium silicate tile piece is a stereoplasm heat insulation tile piece prefabricated in advance, sets up aluminium silicate cotton between core pipe and stereoplasm calcium silicate tile, effectively reduces hard to hard, has filled the space between the two, can absorb the pipeline and receive the radial thermal expansion of thermogenesis simultaneously; the rigid polyurethane foam is a heat insulation material with the best cost performance, the heat insulation performance of the rigid polyurethane foam is second to that of the nano aerogel, the polyurethane foam is formed by later foaming, the spiral air pipe and the internal calcium silicate tiles can be tightly bonded together, and a composite heat insulation structure with high overall stability can be formed by fixing all heat insulation layer structures of the pipe bracket. The utility model discloses regard as the outer jacket with the spiral duct, spiral duct intensity is high, anti ability reinforce of suppressing, can effectively protect inside insulation material not receive external force to destroy, and the leakproofness is strong, and no rainwater is immersed. The utility model discloses a stay tube cooperation outer tube forms bearing structure, and stay tube lateral wall fluting just fills soft insulation material and pouring stereoplasm castables insulating layer inside bearing structure, the effectual heat loss that reduces the conduit saddle has improved the holistic thermal insulation performance of pipeline.
The fixed pipe bracket of the utility model is applied to the field of prefabricated overhead steam transmission, can restrain the heat displacement of the working pipe, ensures the stability of the working pipe at the point, saves energy, preserves heat and can effectively reduce heat loss;
drawings
FIG. 1 is a schematic structural view of a fixing pipe bracket for a prefabricated product heat-insulating pipe;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural view of a supporting tube of a fixing tube bracket for a prefabricated heat-insulating tube;
FIG. 4 is a schematic view showing the installation of the outer sleeve of the fixed pipe bracket for the prefabricated heat-insulating pipe;
in the figure: 1-a core tube; 2-soft heat-insulating layer; 3-hard thermal insulation layer; 4-organic foam heat-insulating layer; 5-a metal outer protective layer; 6, supporting a tube; 7-outer sleeve; 8, reinforcing ribs; 9-a base structure; 10-hard castable heat insulation layer; 11-oval slotted hole.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1-4, a prefabricated product thermal insulation pipe fixing pipe support comprises a core pipe 1, and a cylindrical soft thermal insulation layer 2, a hard thermal insulation layer 3, an organic foam thermal insulation layer 4 and a metal outer protective layer 5 are sequentially arranged outside the core pipe 1 to form a working pipe, wherein the thickness of the soft thermal insulation layer 2 is 10mm, the length of the soft thermal insulation layer is 50mm shorter than that of the working pipe 1, and the soft thermal insulation layer is arranged in the middle to ensure that the lengths of the working pipes 1 exposed at two ends are the same; the hard heat insulation layer 3 is formed by radially wrapping calcium silicate heat insulation tiles, each 3 calcium silicate heat insulation tiles form a circumference, the thickness of the hard heat insulation layer 3 is 100mm, the length of the hard heat insulation layer is 50mm shorter than that of the soft heat insulation layer 2, and the hard heat insulation layer is arranged in the middle to ensure that the lengths of the soft heat insulation layers 2 exposed at two ends are the same; the organic foam heat insulation layer 4 is 30mm thick and 50mm shorter than the hard heat insulation layer 3, and is arranged in the middle to ensure that the lengths of the hard heat insulation layers 3 exposed at two ends are the same; the thickness of the metal outer protective layer 5 is 0.5mm, and two ends of the metal outer protective layer are flush with the organic foam heat-insulating layer; through the length requirements of the soft heat-insulating layer 2, the hard heat-insulating layer 3, the organic foam heat-insulating layer 4 and the metal outer protective layer 5, the two ends of the working pipe are supported in a step shape, so that a heat-insulating structure with certain strength is formed, and the integrity is strong.
A cylindrical supporting tube 6 is welded in the middle of the bottom of the working tube 1, oval slotted holes 12 are uniformly distributed on the side wall of the supporting tube 6, the aperture ratio is about 30 percent, and soft heat-insulating materials such as aluminum silicate cotton and glass cotton are filled in the tube; the supporting tube 6 is inserted into the outer sleeve 7, the lower end of the supporting tube is in contact with a hard castable heat-insulating layer 11 in the outer sleeve, the inner diameter of the outer sleeve 7 is matched with the outer diameter of the supporting tube 6, and the minimum wall thickness is selected; at least 4 rib plates are uniformly arranged on the outer wall of the outer sleeve 7 along the radial direction to serve as reinforcing ribs 8, and the thickness of each reinforcing rib plate 8 is not less than 10 mm; the lower end of the outer casing 7 is cast in the foundation structure 9.
Specifically, the length of the working tube 1 is about 5 times its tube diameter. The pipe diameter of the supporting pipe 6 is about 1/2 of the pipe diameter of the working pipe 1, and the height is 50mm larger than the total thickness of the composite heat insulation layer. The total height of the outer sleeve 7 is 100mm, and the upper end surface of the outer sleeve 7 is 50mm higher than the upper end surface of the internal hard castable heat-insulating layer 11.
The heat insulation material of the soft heat insulation layer is aluminum silicate heat insulation cotton; the density of the aluminum silicate heat-insulating cotton is 128 +/-10 kg/m3The long-term temperature resistance is not lower than 900 ℃, and the heat conductivity coefficient at 25 ℃ meets the following requirements: lambda is less than or equal to 0.041 w/(m.k) @25 ℃.
The density of the calcium silicate heat insulation tile block is 200 plus or minus 20kg/m3The long-term temperature resistance is not lower than 650 ℃, the compressive strength is not less than 0.7MPa, and the heat conductivity coefficient meets the following requirements: lambda is less than or equal to 0.056 w/(m.k) @25 ℃.
The density of the hard polyurethane foam is 45 +/-5 kg/m3The compressive strength is more than or equal to 0.22MPa, and the heat conductivity coefficient at 25 ℃ meets the following requirements: lambda is less than or equal to 0.02 w/(m.k) @25 ℃.
When the heat insulation device is applied specifically, a foundation structure 9 is poured by concrete on the site of a project, the lower end of the outer sleeve 7 is poured into the foundation structure 9 together, then heat insulation pouring materials are poured into the outer sleeve to form a hard pouring material heat insulation layer 11, the upper end face of the outer sleeve 7 is kept 50mm higher than the upper end face of the internal hard pouring material heat insulation layer 11, the lower end of the support pipe 6 is inserted into the outer sleeve 7 on the site according to the field adjustment of the installation height, and the support pipe is in contact with the hard pouring material heat. Welding core pipe 1 level between two parties at the top of stay tube 6, wrap up aluminium silicate heat preservation cotton and form soft heat preservation 2 outside core pipe 1 in proper order, wrap up calcium silicate heat insulation tile piece and form stereoplasm insulating layer 3, soft heat preservation 2 and stereoplasm insulating layer 3 are tied up with galvanized steel band respectively, the interval of two adjacent steel bands is not more than 20cm, then sheathe metal outer jacket 5, set up annular temporary support inside metal outer jacket 5, both ends install interim sealing washer additional, reuse high-pressure foaming machine to pour into stereoplasm polyurethane foam into to the internal cavity, wait to cure and finish, remove interim support and sealing washer, properly preserve, form organic foam heat preservation 4.
Use the fixed conduit saddle in prefabricated built on stilts steam transport field with the fixed conduit saddle of prefabricated finished product heat preservation pipeline of this embodiment, a heat displacement does not take place for fixed prefabricated insulating tube, the job pipe both ends with the fixed conduit saddle of this embodiment respectively with prefabricated insulating tube welding at the job site, the heat preservation of joint department has been handled in proper order, when having high temperature steam to flow in the work steel pipe, the work steel pipe can produce the heat displacement because of the thermal expansion, this part displacement turns into horizontal thrust and acts on the stay tube structure, and transmit to the outer tube structure along the stay tube structure, again through the foundation structure of outer tube transmission to the lower part, above-mentioned structural rigidity is strong, be enough to retrain the work pipe and take place the heat displacement, guarantee the stability.
The above is only one embodiment of the present invention, and all modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. A fixed pipe bracket for a prefabricated finished product heat-insulating pipe comprises a core pipe (1) and is characterized in that a vertical supporting pipe (6) is arranged at the bottom of the core pipe (1), and the lower end of the supporting pipe (6) is inserted into an outer sleeve (7) arranged in a basic structure (9); a soft heat-insulating layer (2), a hard heat-insulating layer (3) and an organic foam heat-insulating layer (4) are sequentially arranged on the outer side of the core pipe (1) from inside to outside to form a composite heat-insulating layer, and a metal outer protective layer (5) is arranged on the outer side of the composite heat-insulating layer to form a working pipe; the length of soft heat preservation (2), stereoplasm insulating layer (3), organic foam heat preservation (4) reduce in proper order and set up between two parties and make the working tube both ends be the step form, metal outer jacket (5) both ends and organic foam heat preservation (4) parallel and level.
2. The prefabricated finished product heat-insulating pipe fixing bracket as claimed in claim 1, wherein a plurality of ribs are uniformly arranged on the outer wall of the outer sleeve (7) along the radial direction to serve as reinforcing ribs (8).
3. The prefabricated finished product pipe bracket for heat preservation according to claim 1, characterized in that the lower end of the outer sleeve (7) is poured in the foundation structure (9); and a hard castable heat-insulating layer (11) is formed by filling heat-insulating castable in the lower part of the outer sleeve (7), and the upper end surface of the outer sleeve (7) is 50-100 mm higher than the upper end surface of the hard castable heat-insulating layer (11).
4. The prefabricated finished product heat-insulating pipe fixing bracket as claimed in claim 1, wherein the upper end of the supporting pipe (6) is welded at the middle of the bottom of the core pipe (1); the upper part of the supporting pipe (6) is wrapped in the composite heat-insulating layer, and the height of the supporting pipe (6) is 50-100 mm greater than the total thickness of the composite heat-insulating layer.
5. The prefabricated finished product heat-insulating pipe fixing bracket as claimed in claim 1, wherein the oval slot holes (12) are uniformly distributed on the side wall of the supporting pipe (6), and the opening rate of the side wall of the supporting pipe (6) is 20-40%; soft heat-insulating materials are filled in the supporting tube (6).
6. The fixed pipe bracket for the prefabricated finished product heat-insulating pipe as claimed in claim 1, wherein the heat-insulating material of the soft heat-insulating layer is aluminum silicate heat-insulating cotton; the density of the aluminum silicate heat-insulating cotton is 128 +/-10 kg/m3The heat conductivity coefficient at 25 ℃ meets the following requirements when the temperature is not lower than 900 ℃: lambda is less than or equal to 0.041 w/(m.k) @25 ℃.
7. The prefabricated finished product pipe bracket as set forth in claim 1, wherein said hard thermal insulation layer is radially wrapped by calcium silicate thermal insulation tiles; the density of the calcium silicate heat insulation tile block is 200 plus or minus 20kg/m3The temperature resistance is not lower than 650 ℃, the compressive strength is more than or equal to 0.7MPa, and the heat conductivity coefficient meets the following requirements: lambda is less than or equal to 0.056 w/(m.k) @25 ℃.
8. The fixing pipe bracket for the prefabricated finished product heat-insulating pipe as claimed in claim 1, wherein the material of the organic foam heat-insulating layer is rigid polyurethane foam; the density of the hard polyurethane foam is 45 +/-5 kg/m3The compressive strength is more than or equal to 0.22MPa, and the heat conductivity coefficient at 25 ℃ meets the following requirements: lambda is less than or equal to 0.02 w/(m.k) @25 ℃.
9. The preformed pipe bracket as claimed in claim 1, wherein the metal outer sheath is a spiral pipe.
10. The fixed pipe bracket for the prefabricated finished product heat-insulating pipe as claimed in claim 1, wherein the lengths of the soft heat-insulating layer, the hard heat-insulating layer and the organic foam heat-insulating layer are sequentially shortened by 80-150 mm compared with the inner layer structure of the fixed pipe bracket; the thickness of the soft heat-insulating layer is 10-30 mm, the thickness of the hard heat-insulating layer is 50-150 mm, the thickness of the organic foam heat-insulating layer is 20-50 mm, and the thickness of the metal outer protective layer is 0.4-1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921213951.1U CN210800465U (en) | 2019-07-30 | 2019-07-30 | Fixed pipe bracket for prefabricated finished product heat-insulating pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921213951.1U CN210800465U (en) | 2019-07-30 | 2019-07-30 | Fixed pipe bracket for prefabricated finished product heat-insulating pipe |
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| CN210800465U true CN210800465U (en) | 2020-06-19 |
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| CN201921213951.1U Active CN210800465U (en) | 2019-07-30 | 2019-07-30 | Fixed pipe bracket for prefabricated finished product heat-insulating pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375154A (en) * | 2019-07-30 | 2019-10-25 | 江苏中圣管道工程技术有限公司 | Prefabricated keeps the temperature effective fixed pipe bracket |
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2019
- 2019-07-30 CN CN201921213951.1U patent/CN210800465U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375154A (en) * | 2019-07-30 | 2019-10-25 | 江苏中圣管道工程技术有限公司 | Prefabricated keeps the temperature effective fixed pipe bracket |
| CN110375154B (en) * | 2019-07-30 | 2024-06-25 | 江苏中圣管道工程技术有限公司 | Fixed pipe bracket for prefabricated finished heat preservation pipe |
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