CN216564353U

CN216564353U - Steel bushing steel insulating pipe for submarine pipeline heat preservation

Info

Publication number: CN216564353U
Application number: CN202122620634.5U
Authority: CN
Inventors: 高喜锋
Original assignee: Tianjin Qiancheng Ocean Engineering Co ltd
Current assignee: Tianjin Qiancheng Ocean Engineering Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-17
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a steel-sheathed steel thermal insulation pipe for thermal insulation of a submarine pipeline, which comprises a pipe body; the inner pipe steel sleeve is arranged on the inner side of the pipe fitting of the pipe body, and a rubber-plastic heat insulation layer is attached to the inner wall of the inner pipe steel sleeve; the outer sleeve layer comprises a first heat insulation coating arranged on the outer wall of the inner pipe steel sleeve and a heat insulation layer attached to the outer wall of the first heat insulation coating, a second heat insulation coating is arranged on the outer side of the heat insulation layer, and the outer wall of the second heat insulation coating is attached to the outer pipe steel sleeve; first thermal barrier coating can reduce the temperature of inner tube steel bushing and outwards scatter and disappear, and the heat preservation has good thermal insulation effect and adiabaticity, especially can effectively prevent the diffusion of lumen central temperature outside under the lower underwater of temperature to play the effect of heat preservation and gathering, the dampproof course can adsorb this internal a small amount of moisture of infiltration pipe, plays the effect of supplementary isolation, and second thermal barrier coating then can prevent that the heat of heat preservation outwards scatters and disappears, plays and strengthens heat retaining effect.

Description

Steel bushing steel insulating pipe for submarine pipeline heat preservation

Technical Field

The utility model relates to the technical field of steel-sheathed-steel heat-preservation pipes for submarine pipeline heat preservation, in particular to a steel-sheathed-steel heat-preservation pipe for submarine pipeline heat preservation.

Background

Along with the continuous development of cable technology, need to pass the steel bushing that is equipped with the cable from the seabed when crossing sea cable and laying to extend to the other end in sea, and the steel bushing not only plays the effect that prevents sea water erosion cable, and it still needs to have corresponding heat preservation effect simultaneously. However, the conventional steel-sheathed steel thermal insulation pipe for thermal insulation of the submarine pipeline is poor in thermal insulation effect, and the cable in the pipe is easily frozen and damaged when facing a cold water area environment; meanwhile, the tightness of the steel sleeve connection is not good enough, and the phenomenon of seawater leakage often occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a steel-sheathed-steel thermal insulation pipe for thermal insulation of a submarine pipeline, which aims to solve the problems that the traditional steel-sheathed-steel thermal insulation pipe for thermal insulation of the submarine pipeline, which is provided by the background art, is poor in thermal insulation effect and easily causes freezing loss to cables in the pipe when facing a cold water area environment; meanwhile, the tightness of the connection of the steel sleeves is not good enough, and the phenomenon of seawater leakage often occurs, so that the utility model aims to provide the steel sleeve steel heat-preservation pipe for the heat preservation of the submarine pipeline, which can strengthen the heat preservation and heat insulation of cables in the pipe body, greatly reduce the transmission of the cold temperature outside the pipe into the pipe, and further strengthen the anti-leakage measure of the pipe body.

In order to achieve the purpose, the utility model provides the following technical scheme: a steel-sheathed-steel thermal insulation pipe for thermal insulation of a submarine pipeline, comprising:

a tube body;

the inner pipe steel sleeve is arranged on the inner side of the pipe fitting of the pipe body, and a rubber-plastic heat insulation layer is attached to the inner wall of the inner pipe steel sleeve;

the outer sleeve layer comprises a first heat insulation coating arranged on the outer wall of the inner pipe steel sleeve and a heat insulation layer attached to the outer wall of the first heat insulation coating, a second heat insulation coating is arranged on the outer side of the heat insulation layer, and the outer wall of the second heat insulation coating is attached to the outer pipe steel sleeve;

the connecting part comprises an inner closed pipe and an outer closed pipe which are correspondingly arranged at two ends of the pipe body;

and the semi-ring steel sleeve is arranged on the outer side of the outer closed pipe in a circle.

Preferably, a moisture-proof layer is further arranged between the heat preservation layer and the second heat insulation coating, an anticorrosive layer is coated on the outer wall of the outer pipe steel sleeve, and the outer sleeve layer sequentially comprises a first heat insulation coating, the heat preservation layer, the moisture-proof layer, the second heat insulation coating, the outer pipe steel sleeve and the anticorrosive layer from inside to outside.

Preferably, the inner wall of the rubber-plastic heat insulation layer is coated with an electromagnetic shielding coating in a circle, and the thickness of the electromagnetic shielding coating is smaller than the thickness of the rubber-plastic heat insulation layer.

Preferably, an annular groove and a sealing ring embedded in the inner side of the annular groove are formed in one circle of the edge of the root part of the inner closed pipe, and an annular inner convex strip is arranged in one circle of the end part of the outer closed pipe;

wherein, the inner closed pipe and the outer closed pipe are sleeved in a staggered embedding manner, and the annular inner raised line is in an embedding structure through the sealing ring and the annular groove.

Preferably, the outer walls of the two end parts of the pipe body are further provided with annular outer convex strips which are encircled layer by layer, and the adjacent annular outer convex strips are distributed at equal intervals.

Preferably, the inner side wall of the semi-ring steel sleeve is embedded with a convex sealing sleeve, and the sealing sleeve is tightly attached to the annular outer convex strip.

Compared with the prior art, the utility model has the beneficial effects that:

through the mutual matching of the first heat insulation coating, the heat preservation layer, the moisture-proof layer, the rubber and plastic heat insulation layer, the outer pipe steel sleeve and the like, the heat preservation device can effectively prevent the temperature in the pipe body from dissipating outwards, can prevent the cold temperature outside the pipe from being transferred to the inner cavity of the pipe body, and has the effect of strengthening the heat preservation of cables.

And (II) seawater is difficult to enter the pipe cavity through the mutual matching of the inner closed pipe, the outer closed pipe, the sealing ring, the annular inner convex strip, the annular outer convex strip, the semi-ring steel sleeve and the like, and the effect of enhancing seepage prevention is achieved while rigid connection is formed.

Drawings

FIG. 1 is a cross-sectional view of the tube body according to the present invention;

FIG. 2 is a schematic cross-sectional three-dimensional structure of a tube body according to the present invention;

FIG. 3 is a schematic view of a pipe connection portion according to the present invention;

FIG. 4 is a perspective view of the semi-ring steel sleeve according to the present invention.

In the figure: 1. a tube body; 100. an inner pipe steel sleeve; 110. a rubber plastic heat insulation layer; 120. an electromagnetic shielding coating; 200. an overcoat layer; 210. a first thermal barrier coating; 220. a heat-insulating layer; 230. a moisture barrier; 240. a second thermal barrier coating; 250. steel sleeve of the outer pipe; 260. an anticorrosive layer; 300. a connecting portion; 310. an inner closed tube; 3101. an annular groove; 3102. a seal ring; 320. an outer closed tube; 3201. an annular inner convex strip; 330. an annular outer convex strip; 400. a semi-ring steel sleeve; 410. and (5) sealing the sleeve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The utility model provides a steel-sheathed-steel heat-preservation pipe for heat preservation of a submarine pipeline, which can strengthen heat preservation and heat insulation of cables in a pipe body, greatly reduce the transmission of cold temperature outside the pipe into the pipe, and further strengthen the anti-leakage measure of the pipe body.

Fig. 1 and 2 respectively show a first embodiment of a steel-sheathed steel thermal insulation pipe for thermal insulation of a submarine pipeline according to the present invention.

A tube body 1; inner tube steel bushing 100, it sets up in the pipe fitting of pipe body 1 inboard, the inner wall laminating of inner tube steel bushing 100 has rubber and plastic insulating layer 110, the inner wall round of rubber and plastic insulating layer 110 still coats electromagnetic shield coating 120, and electromagnetic shield coating 120's thickness is less than the thickness size of rubber and plastic insulating layer 110, inner tube steel bushing 100 mainly plays the effect of carrying out the interlude protection to the cable, rubber and plastic insulating layer 110 has stronger fire resistance and the low characteristics of coefficient of heat conductivity, it can reduce scattering and disappearing of inner tube steel bushing 100 cavity internal temperature as far as, rubber and plastic heat insulating board 110 still has dampproofing and anticorrosive characteristics simultaneously, electromagnetic shield coating 120 then can make the cable conductor can not receive external magnetic field interference when using.

The outer jacket layer 200 comprises a first heat insulation coating 210 arranged on the outer wall of the inner pipe steel jacket 100 and a heat insulation layer 220 attached to the outer wall of the first heat insulation coating 210, a second heat insulation coating 240 is arranged on the outer side of the heat insulation layer 220, an outer pipe steel jacket 250 is attached to the outer wall of the second heat insulation coating 240, a moisture-proof layer 230 is further arranged between the heat insulation layer 220 and the second heat insulation coating 240, an anti-corrosion layer 260 is coated on the outer wall of the outer pipe steel jacket 250, the outer jacket layer 200 sequentially comprises the first heat insulation coating 210, the heat insulation layer 220, the moisture-proof layer 230, the second heat insulation coating 240, the outer pipe steel jacket 250 and the anti-corrosion layer 260 from inside to outside, the first heat insulation coating 210 can reduce the temperature of the inner pipe steel jacket 100 from outwards to achieve the effect of isolation and heat preservation, the heat insulation layer 220 is made of an asbestos composite material and has good heat insulation effect and can effectively prevent the central temperature of a pipe cavity from diffusing outwards particularly under low-temperature water, and play the effect of gathering heat and preserving heat, dampproof course 230 can adsorb a small amount of moisture in the infiltration pipe body 1, play supplementary effect of keeping apart, second thermal barrier coating 240 then can prevent that the heat of heat preservation 220 from outwards scattering and disappearing, plays the effect of strengthening the heat preservation, outer tube steel bushing 250 can provide rigid support and isolation for whole overcoat 200, anticorrosive coating 260 adopts the organic copper ammonia material, it can prevent that the sea water from forming slow corruption to outer tube steel bushing 250 to the performance of body has been improved.

Fig. 3 and 4 respectively show a second embodiment of the steel-sheathed-steel thermal insulation pipe for thermal insulation of a submarine pipeline according to the utility model.

The connecting part 300 comprises an inner closed pipe 310 and an outer closed pipe 320 which are correspondingly arranged at two ends of a pipe body 1, wherein a ring-shaped groove 3101 and a sealing ring 3102 embedded in the ring-shaped groove 3101 are formed on the edge of the root part of the inner closed pipe 310 in a circle, and a ring-shaped inner convex strip 3201 is arranged on the end part of the outer closed pipe 320 in a circle; wherein, the inner closed pipe 310 and the outer closed pipe 320 are sleeved in a staggered embedding manner, the annular inner convex strips 3201 are in an embedding structure through the sealing ring 3102 and the annular groove 3101, the outer walls of the two end parts of the pipe body 1 are also provided with the annular outer convex strips 330 which surround layer by layer, the adjacent annular outer convex strips 330 are distributed in an equal distance, the ends of the two pipe bodies can be embedded and butted through the inner closed pipe 310 and the outer closed pipe 320, and the annular inner convex strips 3201 can closely abut against the sealing ring 3102, so that seawater is difficult to enter the pipe cavity through the inner closed pipe 310 and the outer closed pipe 320.

Half ring steel bushing 400, it sets up in the outside round of outer closed tube 320, the inside wall gomphosis of half ring steel bushing 400 has bellied seal cover 410, and seal cover 410 closely laminates on annular outer sand grip 330, two half ring steel bushings 400 can constitute an interior cylinder structure, can wrap up the cover to the linking position of body when closing up and establish, can carry out rigid connection between two bodys through the welding back, meanwhile seal cover 410 closely laminates in annular outer sand grip 330, the infiltration of sea water can effectively be resisted to annular outer sand grip 330 that the multiple ring distributes, play the effect of strengthening the prevention of seepage.

In summary, in the steel-sheathed-steel thermal insulation pipe for thermal insulation of submarine pipelines according to the embodiment, firstly, a cable laid on the seabed needs to be thermally insulated, wherein the rubber-plastic thermal insulation layer 110 inside the inner steel sheath 100 has the characteristics of strong flame retardancy and low thermal conductivity, and has a certain thermal insulation effect, meanwhile, the first thermal insulation coating 210 can reduce the outward loss of the temperature of the inner steel sheath 100, and has the effect of insulating and preserving heat, the thermal insulation layer 220 is made of an asbestos composite material, and has good thermal insulation effect and thermal insulation property, especially, the central temperature of the pipe cavity can be effectively prevented from being diffused outwards under water with low temperature, and the thermal insulation and heat collection effect is achieved, the moisture-proof layer 230 can absorb a small amount of moisture permeating into the pipe body 1, and has the effect of assisting in insulation, the second thermal insulation coating 240 can prevent the outward loss of the heat of the thermal insulation layer 220, and has the effect of enhancing thermal insulation, the outer pipe steel sleeve 250 can provide rigid support and isolation for the whole outer jacket layer 200, and the anti-corrosion layer 260 is made of an organic cuprammonium material, so that the outer pipe steel sleeve 250 can be prevented from being slowly corroded by seawater, and the service performance of the pipe body is improved.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a steel bushing steel insulating tube for submarine pipeline keeps warm which characterized in that includes:

a tube body (1);

the inner pipe steel sleeve (100) is arranged on the inner side of the pipe fitting of the pipe body (1), and a rubber plastic heat insulation layer (110) is attached to the inner wall of the inner pipe steel sleeve (100);

the outer jacket layer (200) comprises a first heat insulation coating (210) arranged on the outer wall of the inner pipe steel sleeve (100) and a heat insulation layer (220) attached to the outer wall of the first heat insulation coating (210), a second heat insulation coating (240) is arranged on the outer side of the heat insulation layer (220), and an outer pipe steel sleeve (250) is attached to the outer wall of the second heat insulation coating (240);

the connecting part (300) comprises an inner closed pipe (310) and an outer closed pipe (320) which are correspondingly arranged at two ends of the pipe body (1);

and a half-ring steel sleeve (400) which is arranged on the outer side of the outer closed pipe (320).

2. The steel-sheathed-steel thermal insulation pipe for the thermal insulation of the submarine pipeline according to claim 1, which is characterized in that: still be provided with dampproofing course (230) between heat preservation (220) and second thermal barrier coating (240), the outer wall coating of outer tube steel bushing (250) has anticorrosive coating (260), overcoat (200) is first thermal barrier coating (210), heat preservation (220), dampproofing course (230), second thermal barrier coating (240), outer tube steel bushing (250) and anticorrosive coating (260) from inside to outside in proper order.

3. The steel-sheathed-steel thermal insulation pipe for the thermal insulation of the submarine pipeline according to claim 2, which is characterized in that: the inner wall of the rubber-plastic heat insulation layer (110) is coated with an electromagnetic shielding coating (120) in a circle, and the thickness of the electromagnetic shielding coating (120) is smaller than that of the rubber-plastic heat insulation layer (110).

4. The steel-sheathed-steel thermal insulation pipe for the thermal insulation of the submarine pipeline according to claim 3, which is characterized in that: an annular groove (3101) and a sealing ring (3102) embedded in the inner side of the annular groove (3101) are formed in one circle on the edge of the root part of the inner closed pipe (310), and an annular inner convex strip (3201) is formed in one circle on the end part of the outer closed pipe (320);

wherein, the inner closed pipe (310) and the outer closed pipe (320) are sleeved in a staggered embedding shape, and the annular inner convex strips (3201) pass through the sealing ring (3102) and the annular groove (3101) to form a embedding structure.

5. The steel-sheathed-steel thermal insulation pipe for the thermal insulation of the submarine pipeline according to claim 4, which is characterized in that: the outer walls of the two end parts of the pipe body (1) are also provided with annular outer convex strips (330) which are encircled layer by layer, and the adjacent annular outer convex strips (330) are distributed at equal intervals.

6. The steel-sheathed-steel thermal insulation pipe for the thermal insulation of the submarine pipeline according to claim 5, which is characterized in that: the inner side wall of the semi-ring steel sleeve (400) is embedded with a convex sealing sleeve (410), and the sealing sleeve (410) is tightly attached to the annular outer convex strip (330).