CN210600535U - Butt joint structure of composite heat-insulating pipe - Google Patents

Abstract

The utility model relates to a butt joint structure of compound incubation pipe, including first insulating tube and second insulating tube and diameter between them is different, be equipped with the clearance between the corresponding joint of first insulating tube and second insulating tube, the common parcel in the outside of first insulating tube and second insulating tube has the middle part to be the third insulating tube of reducing, and the both ends of third insulating tube all closely link there is seal structure, and seal structure closely wraps up the outside at first insulating tube and second insulating tube respectively for cyclic annular and two seal structures. The utility model can connect the heat preservation pipes with different diameters, avoid directly exposing the end surface of the heat preservation pipe, and simultaneously can ensure that the two heat preservation pipes have better heat preservation effect at the joint through the third heat preservation pipe and the sealing structure; the heat-shrinkable tape is wound on the outer sides of the first heat-preservation pipe, the second heat-preservation pipe and the third heat-preservation pipe, so that the influence of the temperature in the pipes on the heat-shrinkable tape is reduced, the service life of the heat-shrinkable tape is prolonged, and the sealing performance of the heat-shrinkable tape is enhanced.

Description

Butt joint structure of composite heat-insulating pipe

Technical Field

The utility model relates to a heat preservation pipe field especially relates to a butt joint design of compound incubation pipe.

Background

The composite heat-insulating pipe has the function of heat preservation or cold preservation, is mainly used for conveying liquid, gas and other media, and is used for heat preservation in heat-insulating engineering of pipelines of petroleum, chemical engineering, aerospace, hot springs, military, central heating, central air conditioning, municipal administration and the like. In the use, need connect the insulating tube of interconnect with the butt joint, but present some attach fitting is used for two insulating tubes that the diameter is the same completely, and to the insulating tube that the diameter is different, because there is the diameter difference between the insulating tube, the insulating material of the section insulating tube in the junction can directly expose outside with outer pillar, adopts the heat shrink material to seal the section at present more, the long-time operation of heat shrink material under higher temperature or lower temperature condition, the shrink force weakens probably appears, conditions such as mechanical strength reduction, not only influences the heat preservation effect of insulating tube, still increases cost of maintenance.

Disclosure of Invention

The utility model aims to solve the defects of the prior art and provides a butt joint structure of a composite heat preservation pipe.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a butt joint structure of compound insulating tube, includes that first insulating tube and second insulating tube and diameter between them are different, first insulating tube with be equipped with the clearance between the corresponding joint of second insulating tube, first insulating tube with the common parcel in outside of second insulating tube has the third insulating tube that the middle part is the reducing, the both ends of third insulating tube all closely link there is seal structure, seal structure is cyclic annular and two seal structure respectively closely the parcel is in first insulating tube with the outside of second insulating tube, the third insulating tube respectively with first insulating tube the equal inseparable winding in the outside of the contact department that the second insulating tube contacted has the heat shrink area.

Particularly, the third insulating tube includes by interior to exterior parcel in proper order and the tubular metal resonator, heat preservation and the outer pillar of contact, the tubular metal resonator with the internal diameter that first insulating tube contacted with the external diameter of first insulating tube is unanimous, the tubular metal resonator with the internal diameter that second insulating tube contacted with the external diameter of second insulating tube is unanimous.

Particularly, the sealing structure comprises an annular polyethylene sealing ring, the corner of the polyethylene sealing ring is an arc corner, an annular cavity coaxial with the polyethylene sealing ring is arranged in the polyethylene sealing ring, a feeding channel and a discharging channel are arranged at the top of the polyethylene sealing ring, the feeding channel and the discharging channel are respectively communicated with the cavity, heat insulation materials are filled in the feeding channel, the discharging channel and the cavity, one side of each heat insulation material is in contact with the end part of a third heat insulation pipe, and the inner wall of each heat insulation material is respectively in contact with the outer walls of the first heat insulation pipe and the second heat insulation pipe.

Particularly, a plurality of supporting structures used for supporting the outer protective pipe are arranged in the heat preservation layer at intervals along the axis direction, each supporting structure comprises a plurality of supporting blocks which are circumferentially and uniformly distributed in the heat preservation layer, and connecting lines are respectively connected between adjacent supporting blocks in the circumferential direction.

Particularly, a convex ring is contacted with the lower end of one side, close to the first heat preservation pipe, of the supporting block at the reducing position of the heat preservation layer, and the convex ring is connected to the outer wall of the metal pipe.

In particular, the number of support blocks in each support structure is 3-10.

Particularly, the heat-insulating layer and the heat-insulating material are both polyurethane heat-insulating materials.

The utility model has the advantages that: the utility model can connect the heat preservation pipes with different diameters, avoid directly exposing the end surface of the heat preservation pipe, and simultaneously can ensure that the two heat preservation pipes have better heat preservation effect at the joint through the third heat preservation pipe and the sealing structure; the heat-shrinkable tape is wound on the outer sides of the first heat-preservation pipe, the second heat-preservation pipe and the third heat-preservation pipe, so that the influence of the temperature in the pipes on the heat-shrinkable tape is reduced, the service life of the heat-shrinkable tape is prolonged, and the sealing performance of the heat-shrinkable tape is enhanced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention (the first insulating tube and the second insulating tube are not cut away);

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

in the figure: 1-a first heat preservation pipe; 2-a second insulating pipe; 3-clearance; 4-a third insulating pipe; 401-a metal tube; 402-an insulating layer; 403-outer protecting pipe; 404-a support block; 405-connecting lines; 5-a sealing structure; 501-polyethylene sealing ring; 502-a cavity; 503-a feed channel; 504-a discharge channel; 6-heat-shrinkable tape;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1 to 3, a butt joint structure of a composite heat preservation pipe comprises a first heat preservation pipe 1 and a second heat preservation pipe 2, wherein the first heat preservation pipe 1 and the second heat preservation pipe 2 have different diameters, a gap 3 is arranged between the joints corresponding to the first heat preservation pipe 1 and the second heat preservation pipe 2, a third heat preservation pipe 4 with a variable diameter at the middle part is wrapped outside the second heat preservation pipe 2, two ends of the third heat preservation pipe 4 are respectively and tightly connected with a sealing structure 5, the sealing structure 5 is annular, the two sealing structures 5 are respectively and tightly wrapped outside the first heat preservation pipe 1 and the second heat preservation pipe 2, and a heat shrinkage belt 6 is tightly wound outside the contact part where the first heat preservation pipe 1 and the second heat preservation pipe 2 are in contact with each other.

Particularly, the third insulating tube 4 comprises a metal tube 401, an insulating layer 402 and an outer protecting tube 403 which are sequentially wrapped and contacted from inside to outside, the metal tube 401 is consistent with the inner diameter of the first insulating tube 1, which is contacted with the first insulating tube 1, and the metal tube 401 is consistent with the inner diameter of the second insulating tube 2, which is contacted with the outer diameter of the second insulating tube 2.

Particularly, the sealing structure 5 includes an annular polyethylene sealing ring 501, a corner of the polyethylene sealing ring 501 is an arc corner, an annular cavity 502 coaxial with the polyethylene sealing ring 501 is arranged in the polyethylene sealing ring 501, a feeding channel 503 and a discharging channel 504 are arranged at the top of the polyethylene sealing ring 501, the feeding channel 503 and the discharging channel 504 are respectively communicated with the cavity 502, the feeding channel 503, the discharging channel 504 and the cavity 502 are filled with thermal insulation materials, one side of the thermal insulation materials is in contact with the end of a third thermal insulation pipe 4, and the inner wall of the thermal insulation materials is in contact with the outer walls of the first thermal insulation pipe 1 and the second thermal insulation pipe 2 respectively.

Particularly, a plurality of supporting structures for supporting the outer protecting pipes 403 are arranged in the insulating layer 402 at intervals along the axial direction, each supporting structure comprises a plurality of supporting blocks 404 uniformly distributed in the insulating layer 402 in the circumferential direction, connecting wires 405 are respectively connected between adjacent supporting blocks 404 in the circumferential direction, and the connecting wires 405 are metal wires, such as stainless steel wires, aluminum alloy wires, galvanized metal wires and the like.

Particularly, a convex ring 406 is contacted with the lower end of one side of the supporting block 404, which is close to the first insulating pipe 1, at the reducing part of the insulating layer 402, and the convex ring 406 is connected to the outer wall of the metal pipe 401.

In particular, the number of support blocks 404 in each support structure is 3-10.

In particular, the insulating layer 402 and the insulating material are both polyurethane insulating materials.

When the utility model is installed, the sealing structure 5 is respectively sleeved on the outer sides of the first insulating pipe 1 and the second insulating pipe 2, the first insulating pipe 1 and the second insulating pipe 2 are respectively inserted into two ends of the third insulating pipe 4, the cavity 502 is filled with the insulating material through the feeding channel 503, the filling is completed when the insulating material comes out from the discharging channel 504, the feeding channel 503 and the discharging channel 504 are both arranged on the top of the polyethylene sealing ring 501, the insulating material can be ensured to be filled in the cavity 502, the insulating material on the outer side of the first insulating pipe 1 is contacted with the first insulating pipe 1 and the third insulating pipe 4, thereby the sealing structure 5 on the outer side of the first insulating pipe 1 is fixed on the first insulating pipe 1 and the third insulating pipe 4, the insulating material on the outer side of the second insulating pipe 2 is contacted with the second insulating pipe 2 and the third insulating pipe 4, thereby the sealing structure 5 on the outer side of the second insulating pipe 2 is fixed on the second insulating pipe 2 and the third insulating pipe 4, then winding the heat shrinkable tape 6, further fixing and sealing it;

the third insulating tube 4 includes metal pipe 401, heat preservation 402 and outer pillar 403, not only has better heat preservation effect to clearance 3, can improve the intensity of clearance 3 department moreover, and supporting shoe 404 plays the supporting role to outer pillar 403, is favorable to the packing of heat preservation 402 to improve the degree of consistency that heat preservation 402 was filled, thereby guarantee the heat preservation effect of third insulating tube 4.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims (7)

1. A butt joint structure of a composite heat preservation pipe comprises a first heat preservation pipe (1) and a second heat preservation pipe (2) which have different diameters, a gap (3) is arranged between the joints corresponding to the first heat-insulating pipe (1) and the second heat-insulating pipe (2), it is characterized in that the outer parts of the first heat-insulating pipe (1) and the second heat-insulating pipe (2) are jointly wrapped with a third heat-insulating pipe (4) with the middle part being variable in diameter, two ends of the third heat preservation pipe (4) are both tightly connected with sealing structures (5), the sealing structures (5) are annular, the two sealing structures (5) are respectively and tightly wrapped outside the first heat-insulating pipe (1) and the second heat-insulating pipe (2), and heat shrinkage belts (6) are tightly wound on the outer sides of the contact parts of the third heat preservation pipe (4) and the first heat preservation pipe (1) and the second heat preservation pipe (2).

2. The butt joint structure of the composite heat-insulating pipe according to claim 1, wherein the third heat-insulating pipe (4) comprises a metal pipe (401), a heat-insulating layer (402) and an outer protecting pipe (403) which are sequentially wrapped and contacted from inside to outside, the inner diameter of the metal pipe (401) contacted with the first heat-insulating pipe (1) is consistent with the outer diameter of the first heat-insulating pipe (1), and the inner diameter of the metal pipe (401) contacted with the second heat-insulating pipe (2) is consistent with the outer diameter of the second heat-insulating pipe (2).

3. The butt joint structure of a composite heat-insulating pipe according to claim 2, the sealing structure (5) comprises an annular polyethylene sealing ring (501), the corner of the polyethylene sealing ring (501) is an arc corner, an annular cavity (502) coaxial with the polyethylene sealing ring (501) is arranged in the polyethylene sealing ring (501), the top of the polyethylene sealing ring (501) is provided with a feeding channel (503) and a discharging channel (504), the feed channel (503) and the discharge channel (504) are respectively communicated with the cavity (502), the feeding channel (503), the discharging channel (504) and the cavity (502) are all filled with heat insulation materials, one side of the heat insulation material is in contact with the end part of the third heat insulation pipe (4), and the inner wall of the heat insulation material is in contact with the outer walls of the first heat insulation pipe (1) and the second heat insulation pipe (2) respectively.

4. The butt joint structure of the composite heat preservation pipe as claimed in claim 3, wherein a plurality of supporting structures for supporting the outer protection pipe (403) are arranged in the heat preservation layer (402) at intervals along the axial direction, each supporting structure comprises a plurality of supporting blocks (404) uniformly distributed in the heat preservation layer (402) in the circumferential direction, and connecting lines (405) are respectively connected between adjacent supporting blocks (404) in the circumferential direction.

5. The butt joint structure of the composite heat preservation pipe as claimed in claim 4, wherein a lower end of one side of the support block (404) close to the first heat preservation pipe (1) at the reducing part of the heat preservation layer (402) is contacted with a convex ring (406), and the convex ring (406) is connected to the outer wall of the metal pipe (401).

6. The butt joint structure of a composite insulating pipe according to claim 5, wherein the number of the supporting blocks (404) in each supporting structure is 3-10.

7. The butt joint structure of a composite insulating pipe according to claim 6, wherein the insulating layer (402) and the insulating material are both polyurethane insulating materials.

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