CN219282769U - Energy-saving steam directly-buried pipeline heat insulation structure - Google Patents
Energy-saving steam directly-buried pipeline heat insulation structure Download PDFInfo
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- CN219282769U CN219282769U CN202221597994.6U CN202221597994U CN219282769U CN 219282769 U CN219282769 U CN 219282769U CN 202221597994 U CN202221597994 U CN 202221597994U CN 219282769 U CN219282769 U CN 219282769U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to the technical field of heat-insulating pipelines, in particular to an improved pipeline assembly structure for realizing effective heat insulation at the connecting part of adjacent pipelines, and particularly relates to an energy-saving steam direct-buried pipeline heat-insulating structure. The pipeline structure not only carries out the optimal design of the inner and outer layer heat insulation structure on the directly buried heat insulation pipeline, but also carries out the design of the heat insulation structure aiming at the flange connection part between adjacent pipelines, can effectively carry out high-efficiency heat insulation on the whole pipeline, reduces the energy consumption loss in the heat transmission process and improves the economic benefit.
Description
Technical Field
The utility model relates to the technical field of heat preservation pipelines, in particular to an improved pipeline assembly structure for effectively preserving heat at the connecting part of adjacent pipelines, and especially relates to an energy-saving type steam direct-buried pipeline heat preservation structure.
Background
The directly buried steam insulating pipe is also called a prefabricated directly buried steam insulating pipe, and the steel sleeve directly buried steam insulating pipe is an insulating pipe which is specially used for conveying high-temperature steam, has strong heat resistance, low heat loss rate, long service life and convenient installation, and is an energy-saving and environment-friendly pipe.
The steam direct-buried heat-insulating pipe can be divided into a sliding type heat-insulating pipe and an external sliding type heat-insulating pipe according to the structure, wherein the external sliding type heat-insulating pipe mainly comprises a working steel pipe, a heat-insulating layer, a sliding support, an external protection steel pipe, an external anti-corrosion layer and the like. The working steel pipe is generally a seamless steel pipe, and if the caliber of the working steel pipe is larger or the budget requirement exists, the working steel pipe can be replaced by a national standard spiral steel pipe.
For example, in patent document CN201220650436.1, a novel steam buried pipeline structure is disclosed, the main structure of which comprises a working pipe, a heat-insulating layer is arranged outside the working pipe, an outer sleeve is arranged outside the heat-insulating layer, and a plastic bracket and a PVC pipe are arranged between the heat-insulating layer and the outer sleeve; the heat preservation layer includes inside and outside two-layer, and the inlayer is the nanometer cotton layer, and the skin is the phenolic aldehyde foaming layer, be equipped with aluminium foil glass fiber cloth layer between nanometer cotton layer and the phenolic aldehyde foaming layer, the phenolic aldehyde foaming layer is equipped with aluminium foil glass fiber cloth layer outward. It can be seen that the heat preservation pipe is mainly used for improving the number of layers inside and outside a main pipe body of the heat preservation pipe and the materials of all layers so as to improve the heat preservation effect.
For example, also disclosed in patent application number CN201820937732.7 is a high temperature directly buried pipeline insulation structure, its main structure includes the drag reduction layer, its characterized in that, the outside parcel reflection stratum of drag reduction layer, the outside of reflection stratum sets up first insulating layer, bonds through glue between drag reduction layer and the reflection stratum, and reflection stratum and first insulating layer bond through glue, drag reduction layer, reflection stratum and first insulating layer pass through connector fixed connection, and the outside of first insulating layer sets up the pitch layer, sets up the plastic bag in the pitch layer, is full of air in the plastic bag, forms the air bed, the outside parcel second insulating layer of pitch layer, and the outside of second insulating layer sets up the protective housing, and the second insulating layer sets up the anticorrosive coating through the outside of protective housing. It can also be seen from this patent that this patent is mainly directed at the inner and outer layer structure of working steel pipe to increase and realize better heat preservation effect of trunk line.
The two examples and most of the prior art generally mainly optimize the main pipe body of the steam direct-buried insulation pipe to improve the insulation performance so as to reduce heat energy loss and improve heat supply effect, but the simple improvement mode from the pipe structure generally neglects the importance of the connection part between the adjacent pipes.
The pipeline is generally connected in an extending process by adopting a connecting flange, the connecting part of the flange is not improved, but the heat loss of the flange connecting part is also a quite important part in the actual long-distance pipeline conveying process, and the main reasons are that the heat insulating layer does not exist at the current connecting part and the heat insulating structure is relatively single in design, so that the heat insulating design of the connecting part of the adjacent pipelines plays an important role in improving the heat insulating capability of the whole conveying pipeline.
Therefore, the utility model aims at the connection part between the adjacent steam direct-buried heat preservation pipes to carry out improved design, and therefore provides an energy-saving steam direct-buried pipeline heat preservation structure which is used for better solving the problems in the prior art.
Disclosure of Invention
The utility model aims to solve one of the technical problems, and adopts the following technical scheme: the energy-saving steam direct-buried pipeline heat insulation structure comprises two direct-buried heat insulation pipelines which are connected and arranged, wherein the two direct-buried heat insulation pipelines are fixedly connected through connecting flanges at the end parts of the two direct-buried heat insulation pipelines, the direct-buried heat insulation pipelines comprise main body steel pipes, inner anti-corrosion layers are sprayed on the side walls of inner cavities of the main body steel pipes, outer anti-corrosion layers are sprayed on the outer surfaces of the direct-buried heat insulation pipelines, and composite heat insulation coatings are sprayed on the surfaces of the outer anti-corrosion layers;
the two opposite end surfaces of the two connecting flanges are respectively provided with an annular sealing groove, a combined sealing piece is installed between the two connecting flanges in a matched mode, and two ends of the combined sealing piece are movably nested in the annular sealing grooves at corresponding positions;
the two connecting flanges are bolted and fixed through a plurality of connecting bolts;
and the two connecting flange plates are connected with the connecting part heat preservation assembly in a clamping way, and the connecting part heat preservation assembly is detachably and fixedly arranged.
In any of the above aspects, it is preferable that a drag reducing coating is sprayed on the inner surface of the inner anti-corrosion layer.
In any of the above schemes, preferably, the combined sealing member comprises a rubber sealing sleeve, a sealing gasket is integrally formed and fixed on the outer side wall of the middle part of the rubber sealing sleeve, and the sealing gasket is matched and abutted by the opposite end surfaces of the connecting flanges at the two sides of the sealing gasket; the two ends of the rubber sealing sleeve are respectively provided with a conical reducing section, each conical reducing section is respectively used for propping and tightly matching with the inner wall of the conical cavity at the tail end of the annular sealing groove at the corresponding position, and the two ends of the rubber sealing sleeve are respectively propped against the bottom end face of the annular sealing groove at the corresponding position.
In any of the above solutions, it is preferable that an inner end sealing ring is provided on an outer side wall of the rubber sealing sleeve at an outer end of each of the tapered diameter-reducing sections, and the inner end sealing ring is used for realizing tight sealing of an outer end circumference of the tapered cavity.
In any of the above schemes, preferably, the connecting portion heat insulation assembly comprises two semicircular heat insulation clamping sleeves which are oppositely arranged, the two semicircular heat insulation clamping sleeves are butted and bolted and fixed, and then the two connecting flange plates are coated, and a flange heat insulation layer is arranged on the inner side wall of each semicircular heat insulation clamping sleeve.
In any of the above schemes, it is preferable that a surface layer heat-insulating coating is sprayed on the outer side wall of each semicircular heat-insulating sleeve.
In any of the above schemes, preferably, a half-ring clamping section is formed on the outer end face of each half-ring heat insulation clamping sleeve uniformly, and each half-ring clamping section matched and connected in a bolting way is used for realizing clamping and coating of the outer side wall of the end part of the directly-buried heat insulation pipeline at the corresponding position.
In any of the above schemes, it is preferable that an auxiliary heat-insulating layer is provided on the inner surface and the outer surface of each semicircular ring clamping section.
In any of the above schemes, preferably, the length of the semicircular ring clamping section is 10-15cm.
Compared with the prior art, the utility model has the following beneficial effects:
1. the pipeline structure not only carries out the optimal design of the inner and outer layer heat insulation structure on the directly buried heat insulation pipeline, but also carries out the design of the heat insulation structure aiming at the flange connection part between adjacent pipelines, can effectively carry out high-efficiency heat insulation on the whole pipeline, reduces the energy consumption loss in the heat transmission process and improves the economic benefit.
2. The special combined sealing piece is also arranged, so that the sealing and propping of the connecting flange plate part of the pipeline can be effectively ensured, high-pressure conveying can be effectively coped with, the sealing performance in the conveying process is effectively ensured, and the heat loss can be indirectly reduced while the sealing effect is improved.
3. The connecting part heat preservation component of the pipeline structure adopts a detachable coating structure, so that the butt joint part and the periphery of two connecting flange plate parts can be effectively and completely coated, thereby effectively improving the heat preservation effect of the part and effectively reducing the heat loss; and each connecting part of the long-distance conveying pipeline is provided with a connecting part heat preservation assembly, so that the high-efficiency conveying capacity of the pipeline can be effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or features are generally identified by like reference numerals throughout the drawings. In the drawings, the elements or components are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic view of the internal cross-sectional structure of the present utility model.
Fig. 3 is a schematic cross-sectional structure of the direct-buried insulating pipeline of the present utility model.
Fig. 4 is a partial schematic structure of fig. 2.
Figure 5 is a schematic cross-sectional view of the rubber gland of the present utility model.
In the figure, 1, a direct-buried heat-insulation pipeline; 101. a main body steel pipe; 102. an inner anti-corrosion layer; 103. an outer anti-corrosion layer; 104. a drag-reducing coating; 105. a composite thermal insulation coating; 2. a connecting flange plate; 201. an annular seal groove; 202. a connecting bolt; 3. a connecting part heat preservation assembly; 301. semicircular heat-insulating clamping sleeve; 302. a flange heat-insulating layer; 303. a surface layer heat preservation coating; 304. a semicircular clamping section; 305. an auxiliary heat-insulating layer; 4. a rubber sealing sleeve; 401. a sealing gasket; 402. a conical reducing section; 403. a conical cavity; 404. an inner end plugging ring.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model. The specific structure of the utility model is shown in figures 1-5.
Example 1: the energy-saving steam direct-buried pipeline heat insulation structure comprises two direct-buried heat insulation pipelines 1 which are connected and arranged, wherein the two direct-buried heat insulation pipelines 1 are fixedly connected through connecting flanges 2 at the respective ends, the direct-buried heat insulation pipelines 1 comprise main body steel pipes 101, inner anti-corrosion layers 102 are sprayed on the side walls of inner cavities of the main body steel pipes 101, outer anti-corrosion layers 103 are sprayed on the outer surfaces of the direct-buried heat insulation pipelines 1, and composite heat insulation coatings 105 are sprayed on the surfaces of the outer anti-corrosion layers 103;
an annular sealing groove 201 is respectively arranged at the opposite end surfaces of the two connecting flanges 2, a combined sealing piece is installed between the two connecting flanges 2 in a matched mode, and two ends of the combined sealing piece are movably nested in the annular sealing groove 201 at the corresponding position;
the two connecting flanges 2 are bolted and fixed through a plurality of connecting bolts 202;
the outer sides of the two connecting flange plates 2 are connected with a connecting part heat preservation assembly 3 in a clamping mode, and the connecting part heat preservation assembly 3 is detachably and fixedly installed.
The energy-saving steam direct-buried pipeline heat insulation structure is mainly designed in an optimized mode aiming at the structure of the direct-buried heat insulation pipeline 1 and the connecting part of the adjacent direct-buried heat insulation pipeline 1, and the combined sealing piece is utilized to realize effective sealing between the two connecting flange plates 2, so that the high-pressure sealing condition can be dealt with, and the sealing effect is effectively improved.
Meanwhile, the connecting part heat preservation assembly 3 can directly realize cladding connection of the two connecting flange plates 2, so that the joint heat preservation of the flange connection part can be effectively coped with, and the integral energy-saving heat preservation effect is realized by matching with the pipeline main body.
In any of the above schemes, preferably, the combined sealing member comprises a rubber sealing sleeve 4, a sealing gasket 401 is integrally formed and fixed on the outer side wall of the middle part of the rubber sealing sleeve 4, and the sealing gasket 401 is matched and abutted by the opposite end surfaces of the connecting flange plates 2 at the two sides of the sealing gasket 401; two ends of the rubber sealing sleeve 4 are respectively provided with a conical diameter reduction section 402, each conical diameter reduction section 402 is respectively used for being abutted against and tightly matched with the inner wall of a conical cavity 403 at the tail end of the annular sealing groove 201 at a corresponding position, and two ends of the rubber sealing sleeve 4 are respectively abutted against the bottom end face of the annular sealing groove 201 at the corresponding position.
The design of the combined sealing element mainly can realize the effective sealing between the opposite connecting surfaces of the connecting flange plate 2, and the multi-effect sealing is designed during sealing: the first section of sealing is realized by abutting and tightly matching the conical reducing section 402 with the inner wall of the conical cavity 403; the second section of sealing is realized by adopting an inner end sealing ring 404 to seal the peripheral direction of the outer end of the conical cavity 403; the third section of sealing is realized by adopting the tight sealing between the outer side wall of the rubber sealing sleeve 4 and the inner wall of the annular sealing groove 201; the fourth section of sealing is realized by matching and propping the opposite end surfaces of the connecting flange plate 2 tightly through the sealing gasket 401 arranged in the middle, the multiple sections of sealing can better match the current sealing requirement, the high-pressure leakage-proof requirement is effectively met, and the sealing effect is improved.
In any of the above solutions, it is preferable that an inner end sealing ring 404 is provided on the outer side wall of the rubber sealing sleeve 4 at the outer end of each tapered diameter-reducing section 402, and the inner end sealing ring 404 is used for realizing tight sealing of the outer end circumference of the tapered cavity 403.
The inner end closure ring 404 may serve to effectively assist in sealing.
In any of the above schemes, it is preferable that the connection portion heat insulation assembly 3 includes two opposite semicircular heat insulation cutting sleeves 301, and after the two semicircular heat insulation cutting sleeves 301 are butted and bolted, the two connection flange plates 2 are covered, and a flange heat insulation layer 302 is disposed on an inner side wall of the semicircular heat insulation cutting sleeve 301.
The two semicircular heat preservation clamping sleeves 301 are matched with the part of the cladding connecting flange plate 2, so that cladding heat preservation of the connecting part can be effectively realized, heat loss of the connecting part is effectively reduced, and heat transmission capacity of a pipeline is improved.
In any of the above solutions, it is preferable that a semicircular clamping section 304 is integrally formed at the outer end face of each semicircular heat insulation sleeve 301, and each matched semicircular clamping section 304 in butt-joint bolting is used for realizing clamping and cladding of the outer side wall of the end part of the directly buried heat insulation pipeline 1 at the corresponding position.
In addition, the semicircular clamping sections 304 are further arranged on the two sides of the connecting part heat preservation assembly 3 respectively, so that the sealing part of the semicircular clamping sections can be effectively extended to the two sides, and the purposes of effectively improving the coating and sealing effects of the pipeline part are achieved.
Example 2: the energy-saving steam direct-buried pipeline heat insulation structure comprises two direct-buried heat insulation pipelines 1 which are connected and arranged, wherein the two direct-buried heat insulation pipelines 1 are fixedly connected through connecting flanges 2 at the respective ends, the direct-buried heat insulation pipelines 1 comprise main body steel pipes 101, inner anti-corrosion layers 102 are sprayed on the side walls of inner cavities of the main body steel pipes 101, outer anti-corrosion layers 103 are sprayed on the outer surfaces of the direct-buried heat insulation pipelines 1, and composite heat insulation coatings 105 are sprayed on the surfaces of the outer anti-corrosion layers 103;
an annular sealing groove 201 is respectively arranged at the opposite end surfaces of the two connecting flanges 2, a combined sealing piece is installed between the two connecting flanges 2 in a matched mode, and two ends of the combined sealing piece are movably nested in the annular sealing groove 201 at the corresponding position;
the two connecting flanges 2 are bolted and fixed through a plurality of connecting bolts 202;
the outer sides of the two connecting flange plates 2 are connected with a connecting part heat preservation assembly 3 in a clamping mode, and the connecting part heat preservation assembly 3 is detachably and fixedly installed.
The energy-saving steam direct-buried pipeline heat insulation structure is mainly designed in an optimized mode aiming at the structure of the direct-buried heat insulation pipeline 1 and the connecting part of the adjacent direct-buried heat insulation pipeline 1, and the combined sealing piece is utilized to realize effective sealing between the two connecting flange plates 2, so that the high-pressure sealing condition can be dealt with, and the sealing effect is effectively improved.
Meanwhile, the connecting part heat preservation assembly 3 can directly realize cladding connection of the two connecting flange plates 2, so that the joint heat preservation of the flange connection part can be effectively coped with, and the integral energy-saving heat preservation effect is realized by matching with the pipeline main body.
In either of the foregoing embodiments, it is preferred that a drag reducing coating 104 be sprayed on the inner surface of the inner erosion preventing layer 102.
The smoothness in the conveying process can be effectively ensured, and the resistance in the whole conveying process is reduced.
In any of the above schemes, preferably, the combined sealing member comprises a rubber sealing sleeve 4, a sealing gasket 401 is integrally formed and fixed on the outer side wall of the middle part of the rubber sealing sleeve 4, and the sealing gasket 401 is matched and abutted by the opposite end surfaces of the connecting flange plates 2 at the two sides of the sealing gasket 401; two ends of the rubber sealing sleeve 4 are respectively provided with a conical diameter reduction section 402, each conical diameter reduction section 402 is respectively used for being abutted against and tightly matched with the inner wall of a conical cavity 403 at the tail end of the annular sealing groove 201 at a corresponding position, and two ends of the rubber sealing sleeve 4 are respectively abutted against the bottom end face of the annular sealing groove 201 at the corresponding position.
The design of the combined sealing element mainly can realize the effective sealing between the opposite connecting surfaces of the connecting flange plate 2, and the multi-effect sealing is designed during sealing: the first section of sealing is realized by abutting and tightly matching the conical reducing section 402 with the inner wall of the conical cavity 403; the second section of sealing is realized by adopting an inner end sealing ring 404 to seal the peripheral direction of the outer end of the conical cavity 403; the third section of sealing is realized by adopting the tight sealing between the outer side wall of the rubber sealing sleeve 4 and the inner wall of the annular sealing groove 201; the fourth section of sealing is realized by matching and propping the opposite end surfaces of the connecting flange plate 2 tightly through the sealing gasket 401 arranged in the middle, the multiple sections of sealing can better match the current sealing requirement, the high-pressure leakage-proof requirement is effectively met, and the sealing effect is improved.
In any of the above solutions, it is preferable that an inner end sealing ring 404 is provided on the outer side wall of the rubber sealing sleeve 4 at the outer end of each tapered diameter-reducing section 402, and the inner end sealing ring 404 is used for realizing tight sealing of the outer end circumference of the tapered cavity 403.
The inner end closure ring 404 may serve to effectively assist in sealing.
In any of the above schemes, it is preferable that the connection portion heat insulation assembly 3 includes two opposite semicircular heat insulation cutting sleeves 301, and after the two semicircular heat insulation cutting sleeves 301 are butted and bolted, the two connection flange plates 2 are covered, and a flange heat insulation layer 302 is disposed on an inner side wall of the semicircular heat insulation cutting sleeve 301.
The two semicircular heat preservation clamping sleeves 301 are matched with the part of the cladding connecting flange plate 2, so that cladding heat preservation of the connecting part can be effectively realized, heat loss of the connecting part is effectively reduced, and heat transmission capacity of a pipeline is improved.
In any of the above solutions, it is preferable that a surface layer thermal insulation coating 303 is sprayed on the outer side wall of each of the semicircular thermal insulation ferrules 301.
The surface heat-insulating coating 303 effectively improves the heat-insulating effect and reduces the energy consumption loss.
In any of the above solutions, it is preferable that a semicircular clamping section 304 is integrally formed at the outer end face of each semicircular heat insulation sleeve 301, and each matched semicircular clamping section 304 in butt-joint bolting is used for realizing clamping and cladding of the outer side wall of the end part of the directly buried heat insulation pipeline 1 at the corresponding position.
In addition, the semicircular clamping sections 304 are further arranged on the two sides of the connecting part heat preservation assembly 3 respectively, so that the sealing part of the semicircular clamping sections can be effectively extended to the two sides, and the purposes of effectively improving the coating and sealing effects of the pipeline part are achieved.
In any of the above embodiments, it is preferable that an auxiliary heat insulation layer 305 is provided on the inner surface and the outer surface of each semicircular ring clamping section 304.
The auxiliary heat insulation layer 305 serves the purpose of assisting in improving the heat insulation effect of the pipeline.
In any of the above schemes, preferably, the length of the semicircular ring clamping section 304 is 10-15cm, and the proper extension length is set to effectively ensure the convenience in installation and achieve the optimal heat preservation effect.
The pipeline structure not only carries out the optimal design of the inner and outer heat insulation structures on the directly buried heat insulation pipeline 1, but also carries out the design of the heat insulation structure aiming at the flange connection part between adjacent pipelines, thereby effectively carrying out high-efficiency heat insulation on the whole pipeline, reducing the energy consumption loss in the heat transmission process and improving the economic benefit; the special combined sealing piece is arranged, so that the sealing and abutting of the connecting flange 2 of the pipeline can be effectively ensured, high-pressure conveying can be effectively coped with, the sealing performance in the conveying process is effectively ensured, the sealing effect is improved, and meanwhile, the heat loss can be indirectly reduced; the connecting part heat preservation component 3 of the pipeline structure adopts a detachable coating structure, so that the butt joint part and the periphery of the two connecting flange 2 parts can be effectively and completely coated, the heat preservation effect of the part is effectively improved, and the heat loss is effectively reduced; the connecting part heat preservation components 3 are arranged at all connecting parts of the long-distance conveying pipeline, so that the efficient conveying capacity of the pipeline can be effectively improved.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model and are intended to be within the scope of the appended claims and description; any alternative modifications or variations to the embodiments of the present utility model will fall within the scope of the present utility model for those skilled in the art.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (4)
1. Energy-saving steam directly buries pipeline insulation construction, its characterized in that: the direct-buried heat-insulating pipeline comprises two direct-buried heat-insulating pipelines which are connected and arranged, wherein the two direct-buried heat-insulating pipelines are fixedly connected through connecting flanges at the end parts of the two direct-buried heat-insulating pipelines, the direct-buried heat-insulating pipelines comprise main body steel pipes, inner anti-corrosion layers are sprayed on the side walls of inner cavities of the main body steel pipes, outer anti-corrosion layers are sprayed on the outer surfaces of the direct-buried heat-insulating pipelines, and composite heat-insulating coatings are sprayed on the surfaces of the outer anti-corrosion layers;
the two opposite end surfaces of the two connecting flanges are respectively provided with an annular sealing groove, a combined sealing piece is installed between the two connecting flanges in a matched mode, and two ends of the combined sealing piece are movably nested in the annular sealing grooves at corresponding positions;
the two connecting flanges are bolted and fixed through a plurality of connecting bolts;
the outer sides of the two connecting flange plates are clamped and connected with a connecting part heat preservation assembly which is detachably and fixedly arranged;
a drag reduction coating is sprayed on the inner surface of the inner anti-corrosion layer;
the connecting part heat preservation assembly comprises two semicircular heat preservation clamping sleeves which are oppositely arranged, the two semicircular heat preservation clamping sleeves are butted and bolted to be fixed, the two connecting flange plates are covered, and a flange heat preservation layer is arranged on the inner side wall of each semicircular heat preservation clamping sleeve;
respectively spraying a surface layer heat-insulating coating on the outer side wall of each semicircular heat-insulating clamping sleeve;
a semicircular clamping section is uniformly formed at the outer end face of each semicircular heat-insulating clamping sleeve, and each semicircular clamping section matched with the corresponding butt-joint bolt is used for clamping and coating the outer side wall of the end part of the directly-buried heat-insulating pipeline at the corresponding position;
an auxiliary heat-insulating layer is arranged on the inner surface and the outer surface of each semicircular clamping section.
2. The energy-efficient steam buried pipeline insulation structure according to claim 1, wherein: the combined sealing piece comprises a rubber sealing sleeve, a sealing gasket is integrally formed and fixed on the outer side wall of the middle part of the rubber sealing sleeve, and the sealing gasket is matched and abutted by the opposite end faces of the connecting flanges at the two sides of the sealing gasket; the two ends of the rubber sealing sleeve are respectively provided with a conical reducing section, each conical reducing section is respectively used for propping and tightly matching with the inner wall of the conical cavity at the tail end of the annular sealing groove at the corresponding position, and the two ends of the rubber sealing sleeve are respectively propped against the bottom end face of the annular sealing groove at the corresponding position.
3. The energy-efficient steam buried pipeline insulation structure according to claim 2, wherein: an inner end plugging ring is arranged on the outer side wall of the rubber sealing sleeve at the outer end of each conical reducing section and is used for realizing the tight plugging of the outer end circumference of the conical cavity.
4. An energy efficient steam buried pipeline insulation structure according to claim 3, wherein: the length of the semicircular clamping section is 10-15cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221597994.6U CN219282769U (en) | 2022-06-25 | 2022-06-25 | Energy-saving steam directly-buried pipeline heat insulation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576340A (en) * | 2023-07-11 | 2023-08-11 | 河北海润管道制造有限公司 | Corrosion-resistant heat-insulating pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576340A (en) * | 2023-07-11 | 2023-08-11 | 河北海润管道制造有限公司 | Corrosion-resistant heat-insulating pipeline |
| CN116576340B (en) * | 2023-07-11 | 2023-09-12 | 河北海润管道制造有限公司 | Corrosion-resistant heat-insulating pipeline |
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