CN216555989U - Inorganic composite cold insulation pipe support - Google Patents

Abstract

The utility model provides an inorganic composite cold insulation pipe support which characterized in that: the composite cold insulation pipe comprises an upper pipe clamp (1), a self-adhesive aluminum foil composite moisture-proof layer (2), an inorganic composite cold insulation layer (3), a double-end stud (4), a self-adhesive disc spring group (5), a fastening sleeve (6), a lower pipe clamp (7), a base (8), a tetrafluoro low-friction pair (9), a metal protective layer (10) and a field foundation (12), wherein the self-adhesive disc spring group (5), the fastening sleeve (6), the metal protective layer (10), the self-adhesive aluminum foil composite moisture-proof layer (2) and the inorganic composite cold insulation layer (3) are clamped into a whole by the upper pipe clamp (1) and the lower pipe clamp (7) through the double-end stud (4), the load of the pipeline (11) is transmitted to the lower pipe clamp (7) and the base (8) through the inorganic composite cold insulation layer (3), cold insulation and heat insulation are carried out through the inorganic composite cold insulation layer (3), the external heat is blocked from invading into a cold insulation pipe support, the temperature of a medium in the pipeline (11) is prevented from rising, and the heat insulation pipe support is prevented from entering the pipeline (11), The cold loss and the safety risk brought by the pressure increase. The utility model has good cold insulation effect and light weight.

Description

Inorganic composite cold insulation pipe support

Technical Field

The utility model belongs to the field of supports for low-temperature medium conveying pipelines, and particularly relates to various forms of cold insulation pipe supports for fluid conveying pipelines with various calibers (DN 15-DN 1600) under the working conditions of low temperature ranging from normal temperature to-200 ℃, wherein A-level fire prevention is realized by adopting novel inorganic cold insulation materials, and the heat conductivity coefficient of the novel inorganic cold insulation material is superior to that of the traditional PIR, so that the cold insulation performance of the cold insulation pipe supports is improved.

Background

At present, the pipe bracket material of the cold insulation pipe bracket for the domestic low-temperature working condition pipeline is characterized in that: the cold insulation pipe support is characterized in that upper and lower semi-cylindrical Polyurethane (PUR) or Polyisocyanurate (PIR) are used as cold insulation materials of the cold insulation pipe support, longitudinal seam gaps of the upper and lower semi-cylindrical cold insulation blocks are filled with superfine glass wool or foamed rubber strips, the outer surfaces of the cold insulation blocks are coated with mastic or PAP aluminum foil moisture-proof layers, and the moisture-proof layers are fastened by metal protective layers and steel pipe clamps.

The cold-insulating pipe bracket has the following disadvantages in use:

PUR or PIR is an organic foaming material, and a halogen flame retardant is added in the manufacturing process in order to improve the flame retardant property of the PUR or PIR, and the halogen flame retardant can accelerate the corrosion of a stainless steel pipeline and influence the safety of the pipeline.

And 2, as the service life of the PUR or PIR cold insulation material is prolonged, the cold insulation performance can be greatly attenuated, and the cold insulation effect of the pipeline is reduced.

PUR or PIR is an organic high molecular polymer with carbon-carbon bond as a basic structure, a large amount of smoke is generated after the fire is ignited, and a plurality of extremely toxic gases are decomposed and released, and a plurality of fire reports indicate that the casualties caused by burning the smoke and the toxic gases have a far higher casualty ratio than that caused by real burning.

The PUR or PIR generates a large amount of waste after production, use and scrapping, and the waste is usually treated by a burying method, so that the buried waste is extremely difficult to degrade, and the land environment is polluted; if high-temperature incineration treatment is adopted, a large amount of toxic gases such as CO, CO2, HCN, isocyanate and the like can be generated; if the chemical method is adopted for recovery treatment, the equipment investment is high, the energy consumption is large, the recovery rate is low, and the economic feasibility is poor.

5, the PUR or PIR cold insulation block longitudinal seam sealing strip is easy to lose and omit in the installation and use process, gaps exist between cold insulation blocks and pipelines and between cold insulation blocks, and low-temperature contraction is asynchronous, so that hidden cold exposure hazards are easy to cause; the moisture-proof effect of the cold insulation pipe bracket is greatly related to the construction quality, and the cold insulation pipe bracket is easily damaged in the installation process, so that the moisture-proof effect is reduced; therefore, the mounting steps of the PUR or PIR cold insulation pipe support are complicated, and the construction time is long.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the performance of the existing PUR or PIR cold insulation material is reduced along with the increase of the service life, the cold insulation material is ignited and burnt to generate a large amount of harmful substances, is difficult to discard, is complex in installation engineering and the like, and designs an inorganic composite cold insulation pipe bracket which is simpler and more convenient to construct and install and has more excellent cold insulation performance compared with the traditional cold insulation pipe bracket, adopts an inorganic A-grade fireproof green environment-friendly material, and is suitable for supporting fluid conveying pipelines with various calibers (DN 15-DN 1600) in various forms (normal temperature to-200 ℃ low temperature working conditions).

The technical scheme of the utility model is as follows:

the utility model provides an inorganic composite cold insulation pipe support which characterized in that: the self-tightening disc spring group 5 is arranged by the upper pipe clamp 1 and the lower pipe clamp 7 through the double-end stud 4, the fastening sleeve 6, the metal protective layer 10, the self-adhesion aluminum foil composite moisture-proof layer 2, the inorganic composite cold-proof layer 3 and the pipeline 11 are clamped into a whole, the load of the pipeline 11 is transmitted to the lower pipe clamp 7 and the base 8 through the inorganic composite cold-proof layer 3, cold insulation and heat insulation are carried out through the inorganic composite cold-proof layer 3, the external heat is prevented from invading into the cold-proof pipe support, and cold loss and safety risks caused by temperature rise and pressure increase of media in the pipeline 11 are avoided.

The inorganic cold insulation layer 3 is formed by alternately laminating a powder-free aerogel felt layer and a deep cooling aerogel felt layer.

Stud 4 constitute fastening system with from tight dish spring group 5, stud or bolt cooperation flat gasket and dish spring combination use, can both effectually provide continuously changeable clamp force under all kinds of operating modes, make inorganic compound cold insulation pipe support become one whole with pipeline 11, solved traditional fastening mode and led to the cold insulation pipe support because of the low temperature shrink pipeline and cold insulation pipe support slippage dew cold condition that leads to because of the clamp force is not enough, guaranteed cold insulation system's continuity and integrality.

The fastening sleeve 6 enables the fastening force of the stud and the bolt to be close to the pipeline and easier to clamp, the situation that the fastening force is insufficient due to the fact that the traditional pipe clamp is bent or the strength and the rigidity of the welding lug plate are weak is avoided, and meanwhile the pipe clamp is more friendly and safe to install and use.

The utility model has the beneficial effects that:

the inorganic composite cold insulation pipe support has the advantages that the heat insulation performance is optimal, and the cold insulation layer can keep flexibility and low deformation under the deep cooling working condition; the product is hydrophobic and moistureproof as a whole and has fireproof and non-combustible performance as a whole; the expansion joint is structurally eliminated, the structure is simple and reliable, and the applicability is strong; the installation is simple, convenient and efficient, the performance is long and stable, the scrapped part is easy to treat, and the device is safe and environment-friendly.

The utility model transmits the load of the pipeline 11 to the base 8 through the inorganic composite cold insulation layer 3, thereby avoiding the defects of large heat conductivity coefficient, low strength, more abutted seams, easy fragmentation, large construction difficulty and easy scratch of the pipeline of other inorganic cold insulation materials.

The heat insulation performance of the utility model is 2-4 times of that of the similar cold insulation pipe bracket on the existing market. Meanwhile, the product cold insulation material innovatively uses inorganic nano aerogel felt to be compounded as the cold insulation material, so that the defects of complex production process, high energy consumption, high pollution, attenuation of performance along with the increase of service life and the like of the traditional organic foaming cold insulation material are overcome, the defects of overlarge heat conductivity coefficient, excessive splicing seams, fragile material and the like of the foam glass cold insulation material are overcome, and the product cold insulation material has good mechanical property and dimensional stability. In addition, compared with similar products in the market, the method has the characteristics of easy processing and forming, obvious production cycle advantages, simple and convenient engineering field installation, high efficiency and the like.

Drawings

FIG. 1 is a schematic view of the inorganic composite cold insulation pipe support in the radial direction.

FIG. 2 is a schematic axial view of the inorganic composite cold insulation pipe support according to the present invention.

In the figure: 1-upper pipe clamp, 2-self-adhesive composite moisture-proof layer, 3-inorganic composite cold insulation layer, 4-double-end stud, 5-self-tightening disc spring group, 6-fastening sleeve, 7-lower pipe clamp, 8-base, 9-tetrafluoro low-friction pair and 10-metal protective layer.

Detailed Description

The utility model is further described below with reference to the figures and examples.

As shown in fig. 1-2.

The utility model provides an inorganic compound cold insulation pipe support, includes pipe clamp 1, the compound dampproof course of self-adhesion 2, inorganic compound cold insulation layer 3, stud 4, from tight dish spring group 5, fastening sleeve 6, lower pipe clamp 7, base 8, the vice 9 of tetrafluoro low friction, metal inoxidizing coating 10, pipeline 11, on-the-spot basis 12, inside upper and lower pipe clamp is through pressing from both sides tight pipeline all the time under arbitrary operating mode from tight fastener, transmits the load to the base through inorganic compound cold insulation layer. The inorganic cold insulation layer 3 is formed by alternately laminating a powder-free aerogel felt layer and a deep cooling aerogel felt layer, and adopts an inorganic nano aerogel felt as a cold insulation material.

The utility model has the lowest heat conductivity coefficient of all low-temperature cold insulation material alternatives, and can reduce the external heat absorption and medium evaporation in the pipeline to the maximum extent. Under the same cold insulation effect, the thickness of the cold insulation layer is only half of that of the traditional PUR or PIR cold insulation material, and the weight is lighter. The inorganic nano aerogel felt cold insulation material is hydrophobic, can prevent water vapor in the environment from entering the cold insulation material, and keeps flexibility under the deep cooling working condition, thereby avoiding the requirement of the expansion joint of the traditional cold insulation structure, simplifying the installation and accelerating the construction speed. The inorganic nano aerogel felt cold-insulation material has excellent heat insulation performance, sound insulation performance and fireproof performance, and reaches A-grade fireproof performance.

The self-adhesive composite moisture-proof layer is adopted, the using temperature range is-41-160 ℃, the water vapor permeability is 0, the self-adhesive composite moisture-proof layer consists of a protective plastic film layer, a deep cooling mastic layer and a PAP aluminum foil from inside to outside, and the self-adhesive composite moisture-proof layer is simple and convenient to mount, high in efficiency and excellent in performance.

The sleeve design is formed by the innovative fastening sleeve, the stud and the self-tightening disc spring, so that the fastening strength and rigidity of the pipe clamp are increased, the overall dimension of the pipe support is reduced, the fastening effect is achieved under any working condition, and the pipe clamp is safe and reliable.

The utility model starts from two aspects of cold insulation material design and cold insulation structure design, on one hand, the inorganic nano aerogel felt for deep cooling is adopted, and the novel cold insulation pipe bracket has the advantages of lowest heat conductivity coefficient of 0.0137W/m.K at the temperature of-170 ℃, 0.017W/m.K at the temperature of 23 ℃, inorganic A-grade fire resistance, optimal heat insulation performance and non-combustibility. On the other hand, by adopting the innovative cold insulation structural design, the cold insulation layer can block the water vapor invasion in the environment and has flexibility from normal temperature to deep cooling working condition, the requirement on the expansion joint is eliminated, the cold insulation layering is consistent with the pipeline cold insulation layering, and the close combination can be realized. And the fastening is more reliable by adopting an innovative fastening design.

The weight of the inorganic composite cold insulation pipe support is only 40-55% of the weight of the traditional cold insulation pipe support, the volume of the inorganic composite cold insulation pipe support is about 70% of that of the traditional cold insulation pipe support, the situations of damage of a traditional cold insulation block and part shortage in installation cannot occur in the transportation, storage and installation processes, in addition, due to the light weight design, the construction of workers is more convenient, and the project installation progress can be improved by more than 70%.

The present invention is not concerned with parts which are the same as or can be implemented using prior art techniques.

Claims (3)

1. The utility model provides an inorganic composite cold insulation pipe support which characterized in that: the composite cold insulation pipe comprises an upper pipe clamp (1), a self-adhesive aluminum foil composite moisture-proof layer (2), an inorganic composite cold insulation layer (3), a double-end stud (4), a self-adhesive disc spring group (5), a fastening sleeve (6), a lower pipe clamp (7), a base (8), a tetrafluoro low-friction pair (9), a metal protective layer (10) and a field foundation (12), wherein the self-adhesive disc spring group (5), the fastening sleeve (6), the metal protective layer (10), the self-adhesive aluminum foil composite moisture-proof layer (2) and the inorganic composite cold insulation layer (3) are clamped into a whole by the upper pipe clamp (1) and the lower pipe clamp (7) through the double-end stud (4), the load of the pipeline (11) is transmitted to the lower pipe clamp (7) and the base (8) through the inorganic composite cold insulation layer (3), cold insulation and heat insulation are carried out through the inorganic composite cold insulation layer (3), the external heat is blocked from invading into a cold insulation pipe support, the temperature of a medium in the pipeline (11) is prevented from rising, and the heat insulation pipe support is prevented from entering the pipeline (11), The cold loss and the safety risk brought by the pressure increase.

2. The inorganic composite cold insulation pipe support according to claim 1, wherein: the inorganic composite cold insulation layer (3) is formed by alternately laminating a powder-free aerogel felt layer and a deep cooling aerogel felt layer.

3. The inorganic composite cold insulation pipe support according to claim 1, wherein: the double-end stud (4) and the self-tightening disc spring group (5) form a fastening system, and the double-end stud or the bolt is matched with the flat gasket and the disc spring to be used in a combined mode, so that continuous and variable clamping force can be effectively provided under various working conditions, and the inorganic composite cold insulation pipe support and the pipeline (11) are integrated.

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