CN211951902U

CN211951902U - Multi-stage protection polyurethane thermal insulation pipe

Info

Publication number: CN211951902U
Application number: CN202020052634.2U
Authority: CN
Inventors: 毕玉谦
Original assignee: Shandong Dacheng Anti Corrosion And Thermal Insulation Installation Engineering Co ltd
Current assignee: Shandong Dacheng Anti Corrosion And Thermal Insulation Installation Engineering Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-11-17
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses a polyurethane insulating tube of multistage protection relates to pipeline technical field, including the working tube, the outer wall of working tube has cup jointed the asbestos layer, the outer wall on asbestos layer has cup jointed aluminium foil cloth, the surface of aluminium foil cloth has cup jointed the polyurethane heat preservation, the inside of polyurethane heat preservation is fixed with the sleeve, the spring has been placed in the sleeve, the bracing piece has been placed to the upper surface of spring, the bracing piece runs through and extends the telescopic outside, the top of bracing piece is fixed with the roof, the upper surface of roof is opened flutedly, the nested ball that has in the recess of roof, the outer wall of polyurethane heat preservation has cup jointed upper outer pillar, lower outer pillar, go up outer pillar, separate the air bed between lower outer pillar and the polyurethane heat preservation. The utility model discloses have superior corrosion resistance, the quality is light, and the stable performance guarantees thermal-insulated performance, reduces calorific loss, reaches the effect that keeps warm, has very high practicality.

Description

Multi-stage protection polyurethane thermal insulation pipe

Technical Field

The utility model relates to the technical field of pipelines, especially, relate to a polyurethane insulating tube of multistage protection.

Background

As for citizens, the environment of living and living is protected, resources are saved, and the natural environment is indirectly or directly protected; the environment of living and living is destroyed, and the natural environment is destroyed indirectly or directly. As for governments, the system not only focuses on macroscopic protection, but also starts from microcosmic aspects to promote the masses and educate the masses, so that environmental protection and energy conservation become conscious actions of citizens. The insulating tube has very important application in energy saving, reduction heat loss, and the insulating tube comprises outer pillar by interior work steel pipe, polyurethane, glass wool heat preservation, polyethylene or steel pipe, characterized by: also comprises a high-temperature-resistant heat-insulating layer, a lubricating layer and an elastic sealing element. The heat preservation pipe is a short name of a heat preservation pipeline, is used for conveying liquid, gas and other media, is used for heat preservation engineering of pipelines of petroleum, chemical engineering, aerospace, military, central heating, central air conditioning, municipal administration and the like, is difficult to ensure the heat preservation effect, has large heat loss and is not suitable for popularization and use.

Application number CN201720493523.3 discloses combined type polyurethane insulating tube, including skin and inlayer and set up the filling layer between skin and inlayer, skin, filling layer and inlayer set gradually to interior from outer, the filling layer includes polyurethane insulation structure layer, polyvinyl chloride resin layer and polypropylene resin layer, polyurethane insulation structure layer, polyvinyl chloride resin layer and polypropylene resin layer set gradually from interior to exterior, the both ends of filling layer all are equipped with the sealing washer. The utility model discloses novel structure, convenient to use, the mode through the filling layer between skin and inlayer, the structure that adopts the combined type reaches the effect that keeps warm, has superior corrosion resistance, and the quality is light, and the stable performance guarantees thermal-insulated performance, reduces calorific loss, reaches the effect that keeps warm, has very high practicality, has promoted the service function nature of this combined type polyurethane insulating tube greatly, guarantees its result of use and result of use, is fit for extensively promoting.

However, the polyurethane thermal insulation pipe has many defects, the thermal expansion and elongation phenomenon can occur when the working steel pipe of the thermal insulation pipe is directly contacted with high-temperature liquid under the working state, therefore, in a conveying pipeline, expansion joints for supplementing axial displacement are arranged at certain intervals, and meanwhile, in order to ensure the coaxiality of the working steel pipe and the outer protecting pipe of the polyurethane thermal insulation pipe, the radial deviation in the elongation process of the working steel pipe is avoided, the damage to the uniformity of the middle rigid polyurethane foam plastic thermal insulation layer is avoided, and a sliding guide mechanism is also required to be arranged between the working steel pipe and the outer protecting pipe.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a multi-stage protection polyurethane thermal insulation pipe.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a polyurethane insulating tube of multistage protection, includes the working tube, the outer wall of working tube has cup jointed the asbestos layer, the outer wall on asbestos layer has cup jointed aluminium foil cloth, the polyurethane heat preservation has been cup jointed to the surface of aluminium foil cloth, the inside of polyurethane heat preservation is fixed with the sleeve, the spring has been placed in the sleeve, the bracing piece has been placed to the upper surface of spring, the bracing piece runs through and extends the telescopic outside, the top of bracing piece is fixed with the roof, the upper surface of roof is opened flutedly, nested ball has in the recess of roof, the outer wall of polyurethane heat preservation has cup jointed outer pillar, outer pillar down, go up outer pillar, separate the air bed between outer pillar and the polyurethane heat preservation down.

Preferably, the ball contacts with upper outer protecting pipe, lower outer protecting pipe, upper outer protecting pipe, lower outer protecting pipe pass through bolted connection.

Preferably, the upper outer protecting pipe and the lower outer protecting pipe are both metal steel pipes.

Preferably, the metal outer walls of the upper outer protection pipe and the lower outer protection pipe are sequentially coated with an anti-rust layer, a sealing layer and a protective layer, the anti-rust layer is made of inorganic zinc silicate paint, the sealing layer is made of epoxy anti-rust paint, and the protective layer is made of polyurethane paint.

Preferably, the number of the sleeves is four, and the sleeves are uniformly arranged along the circumferential direction.

Preferably, the thickness of the asbestos layer is between 15mm and 20mm, and the thickness of the polyurethane insulation layer is between 20mm and 30 mm.

The utility model has the advantages that:

1, the utility model discloses in, the long-term temperature resistance of polyurethane is less than or equal to 140 ℃ at T, when the temperature is greater than this limit, the inside compound of polyurethane will decompose or carbonize, has influenced polyurethane's the heat preservation effect, and the asbestos layer is used for thermal-insulated temperature that makes the polyurethane interface to remain throughout below 140 ℃, has avoided polyurethane because decomposition and carbonization that high temperature and lead to, and aluminium foil cloth can effectively reduce the radiation heat dissipation, improves the heat preservation effect.

2, the utility model discloses in, when the working pipe is heated the inflation, the ball rolls along outer pillar inner wall, produce the guide effect to the axial displacement of working pipe from this, the axiality of work steel pipe and outer pillar has been guaranteed, avoided taking place radial offset because of the work steel pipe and lead to the fact destruction to middle rigid polyurethane foam heat preservation homogeneity, reached and optimized polyurethane insulating tube product structure, prolong its working life's purpose, adopt the ball to reduce the area of contact of ball and outer pillar inner wall simultaneously, reduce heat conduction, the reinforcing heat insulating ability.

3, the utility model discloses in, adopt outer pillar, outer pillar convenient to detach outer pillar when the polyurethane insulating tube is changed to needs down, inorganic zinc silicate coating is inside antirust coat simultaneously, protective layer epoxy adhesive force has been improved, epoxy antirust coating is the sealing layer, can effectively completely cut off the air, make outer pillar in use be difficult to appear with the substrate separation, defect such as drop or stick up the limit, use polyurethane coating as the protective layer, its polyurethane coating strong adaptability, the ageing resistance, it is corrosion-resistant, anti chemical medium, impact resistance is good, good stability, long service life.

Drawings

Fig. 1 is a schematic structural view of a multi-stage protection polyurethane thermal insulation pipe of the present invention.

Fig. 2 is a schematic structural diagram of a side view of the multi-stage protection polyurethane thermal insulation pipe of the present invention.

Fig. 3 is a schematic structural diagram of a position a in fig. 1 of a multi-stage protection polyurethane thermal insulation pipe according to the present invention.

Fig. 4 is a schematic structural diagram of an upper outer protective tube of a multi-stage protection polyurethane thermal insulation pipe of the present invention.

Reference numbers in the figures: 1 working tube, 2 asbestos layer, 3 aluminum foil cloth, 4 polyurethane heat preservation layer, 5 air layer, 6 upper outer protecting tube, 61 antirust layer, 62 sealing layer, 63 protective layer, 7 sleeve, 8 spring, 9 supporting rod, 10 top plate, 11 ball, 12 lower outer protecting tube and 13 bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a polyurethane insulating tube of multistage protection, including working tube 1, asbestos layer 2 has been cup jointed to the outer wall of working tube 1, aluminium foil cloth 3 has been cup jointed to the outer wall of asbestos layer 2, polyurethane insulating layer 4 has been cup jointed to the surface of aluminium foil cloth 3, sleeve 7 is fixed with to the inside of polyurethane insulating layer 4, spring 8 has been placed in sleeve 7, bracing piece 9 has been placed to the upper surface of spring 8, the outside of sleeve 7 that bracing piece 9 runs through and extends, the top of bracing piece 9 is fixed with roof 10, the upper surface of roof 10 is opened flutedly, ball 11 has been nested in the recess of roof 10, upper outer pillar 6 has been cup jointed to the outer wall of polyurethane insulating layer 4, lower outer pillar 12, upper outer pillar 6, separate air bed 5 between lower outer pillar 12 and the polyurethane insulating layer 4.

The ball 11 contacts with upper outer protecting pipe 6, lower outer protecting pipe 12, upper outer protecting pipe 6, lower outer protecting pipe 12 pass the bolt 13 to connect, upper outer protecting pipe 6, lower outer protecting pipe 12 are the metal steel pipe, the metal outer wall of upper outer protecting pipe 6, lower outer protecting pipe 12 is scribbled antirust coat 71, sealing layer 72, protective layer 73 sequentially, antirust coat 61 adopts inorganic zinc silicate coating, sealing layer 62 adopts epoxy antirust coating, protective layer 63 adopts polyurethane coating, the sleeve 7 is four, arrange evenly along the circumferencial direction, the thickness of asbestos layer 2 is between 15mm-20mm, the thickness of polyurethane heat preservation 4 is between 20mm-30 mm.

The working principle is as follows:

when the utility model is used, the utility model,

when the working pipe 1 is heated and expanded, the spring 8 drives the supporting rod 9 to rise, the supporting rod 9 drives the top plate 10 and the balls 11 to rise, the balls 11 roll along the inner walls of the upper outer protecting pipe 6 and the lower outer protecting pipe 12, thereby generating a guiding effect on the axial movement of the working pipe 1, ensuring the coaxiality of the working pipe 1 and the upper outer protecting pipe 6 and the lower outer protecting pipe 12, avoiding the damage to the uniformity of a middle rigid polyurethane foam plastic heat-insulating layer due to the radial deviation of the working pipe 1, achieving the aims of optimizing the product structure of the polyurethane heat-insulating pipe and prolonging the service life of the polyurethane heat-insulating pipe, reducing the contact area of the balls and the inner wall of the outer protecting pipe by adopting the balls 1, reducing the heat conduction effect and enhancing the heat insulation property, wherein the asbestos layer 2 is used for insulating heat to keep the temperature of the interface of the polyurethane heat-insulating layer 4 below 140 ℃ all the time, and, and the aluminum foil 3 can effectively reduce radiation heat dissipation and improve the heat preservation effect.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a polyurethane insulating tube of multistage protection, includes working tube (1), its characterized in that, asbestos layer (2) have been cup jointed to the outer wall of working tube (1), aluminium foil cloth (3) have been cup jointed to the outer wall of asbestos layer (2), polyurethane heat preservation (4) have been cup jointed to the surface of aluminium foil cloth (3), the inside of polyurethane heat preservation (4) is fixed with sleeve (7), spring (8) have been placed in sleeve (7), bracing piece (9) have been placed to the upper surface of spring (8), the outside of sleeve (7) that bracing piece (9) run through and extend, the top of bracing piece (9) is fixed with roof (10), the upper surface of roof (10) is opened, nested ball (11) have been had in the recess of roof (10), outer protective casing (6) have been cup jointed to the outer wall of polyurethane heat preservation (4), The lower outer protecting pipe (12), an air layer (5) is arranged between the upper outer protecting pipe (6), the lower outer protecting pipe (12) and the polyurethane heat-insulating layer (4).

2. The multi-stage protection polyurethane thermal insulation pipe according to claim 1, wherein the balls (11) are in contact with an upper outer protection pipe (6) and a lower outer protection pipe (12), and the upper outer protection pipe (6) and the lower outer protection pipe (12) are connected through bolts (13).

3. The multi-stage protection polyurethane thermal insulation pipe according to claim 2, wherein the upper outer protecting pipe (6) and the lower outer protecting pipe (12) are both metal steel pipes.

4. The multi-protection polyurethane thermal insulation pipe as claimed in claim 3, wherein the metal outer walls of the upper outer protection pipe (6) and the lower outer protection pipe (12) are sequentially coated with an anti-rust layer (61), a sealing layer (62) and a protective layer (63), the anti-rust layer (61) is made of inorganic zinc silicate paint, the sealing layer (62) is made of epoxy anti-rust paint, and the protective layer (63) is made of polyurethane paint.

5. The polyurethane thermal insulation pipe with multi-stage protection according to claim 1, wherein the number of the sleeves (7) is four, and the sleeves are uniformly arranged along the circumferential direction.

6. The multi-stage protection polyurethane thermal insulation pipe according to claim 1, wherein the thickness of the asbestos layer (2) is between 15mm and 20mm, and the thickness of the polyurethane thermal insulation layer (4) is between 20mm and 30 mm.