CN213452147U

CN213452147U - Polyurethane heat preservation pipeline coupling assembling

Info

Publication number: CN213452147U
Application number: CN202022577739.2U
Authority: CN
Inventors: 张涛; 朱国栋; 艾名朋; 王亚松; 郭少通
Original assignee: Cangzhou Rongtong Pipeline Equipment Co ltd
Current assignee: Cangzhou Rongtong Pipeline Equipment Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-15
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses a polyurethane insulating tube coupling assembling, including support sleeve and adapter sleeve, support the sleeve pipe box and establish on the welding seam of two work steel pipes, support sleeve's middle part is provided with the annular groove of one uplift, be provided with welding seam alarm line in the annular groove, support sleeve's top is provided with two symmetrically and supports the ear, two junction alarm lines erect respectively on two support ears and be connected through cold press connection terminal with welding seam alarm line, the adapter sleeve cover is located on two relative breachs of polyethylene insulating tube, it has the polyurethane foaming layer to fill between adapter sleeve and the work steel pipe. The utility model adopts the above structure a polyurethane thermal insulation pipeline coupling assembling consolidates work steel pipe and polyethylene insulating tube respectively through support sleeve and adapter sleeve, protects junction alarm line, prevents that the mistake from touching, adds welding seam alarm line and surveys the work steel pipe.

Description

Polyurethane heat preservation pipeline coupling assembling

Technical Field

The utility model belongs to the technical field of the insulating tube and specifically relates to a polyurethane insulating tube coupling assembling is related to.

Background

Along with the expansion of cities, city construction is increasingly tense, the work of pipe network laying is more and more, and the connection of the heat preservation pipes in the pipe network laying is inevitable work. The existing thermal insulation pipe connection basically welds working steel pipes of two thermal insulation pipes, a connecting sleeve is sleeved at the joint of the polyethylene thermal insulation pipes, the connecting sleeve and the polyethylene thermal insulation pipes are hermetically welded through an extrusion type welding gun, polyurethane foam is filled in the sleeve, and a filling hole is sealed through a sealing adhesive tape. The connecting mode has the disadvantages that the connecting outer sleeve and the polyethylene heat-insulating pipe are simply welded by a welding gun, and the welding is easily broken under the impact of high-pressure foaming during pouring foaming, so that the polyethylene heat-insulating pipe leaks.

At present, the alarm wire is arranged at the joint of the heat preservation pipe and used for water inlet alarm at the joint, but because the existing connecting bracket only supports the connecting wire and does not have toppling protection, the alarm wire is easy to be flushed down from the bracket when polyurethane foam is poured for the second time and is contacted with the inner steel pipe to form a conductive alarm state, and the alarm effect is lost. In addition, alarm lines are not installed at the positions of the two connected heat preservation pipes, and the alarm lines cannot be noticed when the joints of the heat preservation pipes are broken and leaked, so that the situations of untimely detection and maintenance of the pipelines are caused.

Aiming at the problems in the prior art, a novel polyurethane thermal insulation pipe connecting assembly is researched and designed, so that the problem in the prior art is very necessary to be overcome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a polyurethane insulating tube coupling assembling consolidates work steel pipe and polyethylene insulating tube respectively through support sleeve and adapter sleeve, protects junction alarm line, prevents that the mistake from touching, adds welding seam alarm line and surveys the work steel pipe.

In order to realize the purpose, the utility model provides a polyurethane thermal insulation pipeline connecting assembly, which comprises a working steel pipe, a polyethylene thermal insulation pipe and a polyurethane thermal insulation layer filled between the working steel pipe and the polyethylene thermal insulation pipe, wherein a joint alarm line is embedded between the polyurethane thermal insulation layers and extends out of the polyurethane thermal insulation layer, the connecting assembly further comprises a support sleeve and a connecting sleeve, the support sleeve is sleeved on the welding seams of the two working steel pipes, the middle part of the support sleeve is provided with a raised annular groove, a welding seam alarm line is arranged in the annular groove, the top end of the support sleeve is symmetrically provided with two support lugs, the two joint alarm lines are respectively erected on the two support lugs and are connected with the welding seam alarm line through a cold-pressing connecting terminal, the connecting sleeve is arranged on two opposite gaps of the polyethylene thermal insulation pipe, and a polyurethane foaming layer is filled between the connecting sleeve and the working steel pipe.

Preferably, the top of supporting the ear is provided with the bayonet socket, the bayonet socket comprises rectangle section and circle segment, the rectangle section is located the top of bayonet socket, the circle segment with the bottom of rectangle section is connected, the diameter of junction alarm line is greater than the width of rectangle section and is less than the diameter of circle segment.

Preferably, the top end of the annular groove is provided with a through hole, the welding seam alarm line surrounds the welding seam in the annular groove and upwards passes through the through hole to be connected with the cold pressing wiring terminal, and the cold pressing wiring terminal is arranged between the two support lugs.

Preferably, the two ends of the connecting sleeve are lapped outside the two polyethylene heat-insulating pipes, an electric hot melting connecting layer is arranged between the connecting sleeve and the polyethylene heat-insulating pipes, polyethylene welding rods are arranged on the edges of the lapped parts of the connecting sleeve and the polyethylene heat-insulating pipes, and a material injection hole and an exhaust hole are formed in the connecting sleeve.

Therefore, the polyurethane thermal insulation pipeline connecting assembly adopting the structure further fixes the welding seam of the working steel pipe through the supporting sleeve, and can support the alarm line at the joint not to be in direct contact with the working steel pipe, so as to prevent false alarm; detecting the leakage condition of the working steel pipe through a welding seam alarm line; carry out dual fixed through the electrothermal welding articulamentum in the adapter sleeve and the polyethylene welding rod of edge, prevent to open under the polyurethane foaming layer high pressure state of filling and weld.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic structural view of a polyurethane thermal insulation pipe connection assembly of the present invention;

fig. 2 is a schematic view of the structure of the supporting sleeve of the present invention.

Drawings

1. Working steel pipes; 2. polyethylene thermal insulation pipes; 3. a polyurethane heat-insulating layer; 4. a support sleeve; 41. an annular groove; 42. a support ear; 43. a rectangular section; 44. a circular segment; 45. a through hole; 5. connecting a sleeve; 51. an electric hot melting connection layer; 52. a polyethylene welding rod; 53. a polyurethane foam layer; 6. a joint alarm line; 61. cold pressing the wiring terminal; 7. welding seam alarm line.

Detailed Description

The technical solution of the present invention is further explained by the accompanying drawings and examples.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Examples

As shown in the figure, a polyurethane insulating tube coupling assembling, include work steel pipe 1, polyethylene insulating tube 2 and fill polyurethane insulating layer 3 between work steel pipe 1 and polyethylene insulating tube 2, the junction alarm line 6 is being buried underground between polyurethane insulating layer 3, and junction alarm line 6 stretches out outside polyurethane insulating layer 3.

The device further comprises a support sleeve 4 and a connecting sleeve 5, wherein the support sleeve 4 is sleeved on the welding line of the two working steel pipes 1 to further fix and seal the two working steel pipes 1, and leakage is reduced. The top end of the supporting sleeve 4 is symmetrically provided with two supporting lugs 42, and the two joint alarm wires 6 are respectively erected on the two supporting lugs 42. The top end of the supporting lug 42 is provided with a bayonet, the bayonet consists of a rectangular section 43 and a circular section 44, the rectangular section 43 is positioned at the top end of the bayonet, the circular section 44 is connected with the bottom of the rectangular section 43, and the diameter of the alarm wire 6 at the connection part is larger than the width of the rectangular section 43 and smaller than the diameter of the circular section 44. Junction alarm line 6 gets into from rectangle section 43, and the joint is in circle section 44 to be connected through binding post 61 of colding pressing, thereby support ear 42 can prevent to dash connecting wire alarm line down when polyurethane foam layer 53 foams and lead to the mistake to touch.

The middle part of the support sleeve 4 is provided with a raised annular groove 41, a welding seam alarm line 7 is arranged in the annular groove 41, the top end of the annular groove 41 is provided with a through hole 45, the welding seam alarm line 7 surrounds a welding seam in the annular groove 41 and upwards passes through the through hole 45 to be connected with a cold-pressing wiring terminal 61, and the cold-pressing wiring terminal 61 is arranged between two support lugs 42. The welding seam alarm line 7 is used for detecting the leakage condition at the welding seam.

The connecting sleeve 5 is sleeved on the notches corresponding to the two polyethylene heat-insulating pipes 2, the connecting sleeve 5 is provided with a material injection hole and an exhaust hole, and polyurethane is injected between the connecting sleeve 5 and the working steel pipe 1 through the material injection hole to form a polyurethane foaming layer 53. The two ends of the connecting sleeve are lapped outside the two polyethylene heat-insulating pipes 2, an electric hot melting connecting layer 51 is arranged between the connecting sleeve 5 and the polyethylene heat-insulating pipes 2, and a lead joint of the electric hot melting connecting layer 51 extends out of the connecting sleeve 5 and is used for connecting a power supply. When installing adapter sleeve 5 additional, connect for electric heat fusing articulamentum 51 through the wire joint and insert the power, electric heat fusing articulamentum 51 circular telegram melts and links together adapter sleeve 5 and polyethylene heat preservation, and adapter sleeve 5 is provided with polyethylene welding rod 52 through extrusion formula welder with the lap joint edge of polyethylene heat preservation pipe 2, fixes and seals, forms the high pressure when preventing the polyurethane foaming and leads to opening welding.

Therefore, the polyurethane thermal insulation pipeline connecting assembly adopting the structure further fixes the welding seam of the working steel pipe 1 through the supporting sleeve 4, and can support the connecting part alarm line 6 not to be in direct contact with the working steel pipe 1, so as to prevent false alarm; detecting the leakage condition of the working steel pipe 1 through a welding seam alarm wire 7; the double fixation is performed by the electric hot melting connecting layer 51 in the connecting sleeve 5 and the polyethylene welding rod 52 at the edge, so that the open welding of the filled polyurethane foaming layer 53 under the high-pressure state is prevented.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a polyurethane insulating tube coupling assembling, includes work steel pipe, polyethylene insulating tube and fills the polyurethane heat preservation between work steel pipe and polyethylene insulating tube, the junction alarm line is being buried underground between the polyurethane heat preservation, the junction alarm line stretches out outside the polyurethane heat preservation, its characterized in that: the welding seam warning device is characterized by further comprising a supporting sleeve and a connecting sleeve, the supporting sleeve is sleeved on welding seams of the two working steel pipes, a raised annular groove is formed in the middle of the supporting sleeve, welding seam warning lines are arranged in the annular groove, the top end of the supporting sleeve is symmetrically provided with two supporting lugs, the two joint warning lines are erected on the two supporting lugs respectively and are connected with the welding seam warning lines through cold-pressing wiring terminals, the connecting sleeve is sleeved on two opposite notches of the polyethylene heat-insulating pipes, and a polyurethane foaming layer is filled between the connecting sleeve and the working steel pipes.

2. The polyurethane insulated pipe connection assembly of claim 1, wherein: the top of supporting the ear is provided with the bayonet socket, the bayonet socket comprises rectangle section and circle segment, the rectangle section is located the top of bayonet socket, the circle segment with the bottom of rectangle section is connected, the diameter of junction alarm line is greater than the width of rectangle section and is less than the diameter of circle segment.

3. The polyurethane insulated pipe connection assembly of claim 1, wherein: the top end of the annular groove is provided with a through hole, the welding seam alarm line surrounds the welding seam in the annular groove and upwards penetrates through the through hole to be connected with the cold pressing wiring terminal, and the cold pressing wiring terminal is arranged between the two supporting lugs.

4. The polyurethane insulated pipe connection assembly of claim 1, wherein: the two ends of the connecting sleeve are lapped outside the two polyethylene heat-insulating pipes, an electric hot melting connecting layer is arranged between the connecting sleeve and the polyethylene heat-insulating pipes, polyethylene welding rods are arranged on the edges of the lapping positions of the connecting sleeve and the polyethylene heat-insulating pipes, and material injection holes and exhaust holes are formed in the connecting sleeve.