CN210240925U - Buried medium pipeline with anti-freezing and damp-proof effects - Google Patents
Buried medium pipeline with anti-freezing and damp-proof effects Download PDFInfo
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- CN210240925U CN210240925U CN201920704284.0U CN201920704284U CN210240925U CN 210240925 U CN210240925 U CN 210240925U CN 201920704284 U CN201920704284 U CN 201920704284U CN 210240925 U CN210240925 U CN 210240925U
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Abstract
The utility model provides a bury medium pipeline underground with frost resistant dampproofing effect, this bury medium pipeline underground for the electric heat tracing medium pipeline that has multilayer structure, be suitable for to bury underground in cold humid area freezing in situ, including heating structure, heat energy deposit conducting layer, heat energy secondary feedback layer, insulating seal layer and the adiabatic structure of heat preservation cold-insulation that an at least medium pipeline and this medium pipeline periphery set gradually from inside to outside, heating structure is the electric heat tracing area of arranging on medium pipeline. The utility model discloses bury the medium pipeline underground and use the comprehensive design principle, adopt multilayer structure design and with the layer fissure of displacement, the additional insulating technology of layer pressure seam to lay the mode, solve the electric insulation and the sealed problem of electric tracing band when burying underground, utilize the technological processing mode of heat energy storage conducting layer and heat energy secondary feedback layer simultaneously, increase substantially the thermal efficiency of electric tracing band, reduce the energy consumption; the heat preservation, cold insulation and heat insulation structure enables the electric tracing band to have the cold preservation and heat insulation functions in summer when the electric tracing band is not used.
Description
Technical Field
The utility model belongs to the technical field of the thermal insulation engineering of industrial pipeline, civilian pipeline (or equipment), concretely relates to medium pipeline buries underground that has freeze proof dampproofing effect that is applicable to in cold humid area freezing in situ.
Background
At present, industrial and civil medium pipelines (or equipment) are generally arranged below a frozen layer when being buried underground, and for the medium pipelines (or equipment) which are deep in the frozen layer and need to be buried in the frozen layer, a heat tracing implementation mode of a heat source pipeline is usually adopted, the mode mainly uses steam or hot water as an external heat source, namely, heat dissipated by a heat tracing pipe compensates heat dissipation loss of a medium working pipeline (or equipment), and the heat tracing pipe and the medium pipeline (or equipment) are wrapped in the heat insulating layer together by using heat insulating materials and buried in the frozen layer. The traditional steam or hot water type heat tracing anti-freezing measure needs a large amount of heat source supply, has large energy consumption, is complex in matching system, has large workload of installation and maintenance, and is inconvenient to manage. In recent years, with the advent of electric tracing band technology, electric tracing can effectively utilize energy, convert electric energy into heat energy and effectively control temperature, so as to achieve the purposes of heating, heat preservation and freeze prevention, and a common space pipeline electric tracing laying mode is shown in fig. 1.
The working principle of electric tracing is divided into an induction heating method, a direct electrifying method, a resistance heating method and the like, the method basically meets the heat preservation and freeze prevention requirements of most of underground exposed laying pipelines and underground pipe gallery pipelines (or equipment), but the service life of the electric tracing band is reduced easily due to high waterproof requirement of the electric tracing band and local heat concentration, and the electric tracing band cannot be directly used for heating, heat preservation and freeze prevention of underground buried medium pipelines (or equipment) at present, particularly in a frozen layer of an area with a high underground water level. At present, research attempts are made to penetrate a plurality of electric tracing bands into a PVC insulating pipe or a metal conduit respectively to serve as a heating accompanying pipe and a medium pipeline to be laid in parallel, but the PVC pipe or the metal conduit cannot be wound on the medium pipeline according to a preset mode (the power of the electric tracing bands is limited, the heat productivity of the parallel laying is limited, and the heat transfer efficiency is too low), so that the medium pipeline (or equipment) cannot obtain enough and uniform heat, the heat conductivity of the PVC pipe is low, and gaps exist between the PVC pipe and the position space of the electric tracing bands, so that the limited heat produced by the electric tracing bands cannot be uniformly and effectively released and efficiently to be transferred to the medium pipeline (or equipment); in addition, the sealing treatment of the joint of the PVC pipe or the metal conduit is difficult, so that the mode can cause large energy consumption of the electric tracing band, low thermal efficiency and difficult construction, and is not suitable for popularization and use.
SUMMERY OF THE UTILITY MODEL
Not enough more than to, the utility model aims at providing a bury medium pipeline underground with frost-resistant dampproofing effect.
The utility model discloses the technical scheme who adopts does:
the utility model provides an bury medium pipeline underground with frost resistant dampproofing effect, for the electric heat tracing medium pipeline that has multilayer structure, be suitable for to bury underground in cold humid area frozen layer, including at least one medium pipeline (and this medium pipeline periphery heating structure, heat energy storage conducting layer, heat energy secondary feedback layer, insulating seal layer and the adiabatic structure of heat preservation cold insulation that sets gradually from inside to outside, heating structure is the electric heat tracing area of arranging on the medium pipeline, and the adiabatic structure of heat preservation cold insulation is multilayer composite construction, includes the functional layer that is used for heat preservation and cold insulation that sets gradually from inside to outside, has the cold preservation and prevents the dampproof course of dewfall and has the protective layer of waterproof reinforcement effect.
In the buried medium pipeline with the anti-freezing and damp-proof effects, the heat energy storage and conduction layer is made of a metal wire mesh and is laid on the electric tracing band and the periphery of the medium pipeline to form a porous flocculent layer.
In the buried medium pipeline with the anti-freezing and damp-proof effects, the heat energy storage and conduction layer is a mesh formed by any one or combination of a plurality of iron wire meshes, aluminum wire meshes, copper wire meshes and stainless steel wire meshes, the mesh does not have electrochemical reaction with materials in contact with the mesh, and the width of the mesh is 100-150 mm.
In the buried medium pipeline with the anti-freezing and moisture-proof effects, the heat energy storage and conduction layer is a rolled net sheet, at least two layers are arranged, and the heat energy storage and conduction layer is spirally wound on the peripheries of the electric tracing band and the medium pipeline in a half-lamination method.
In the buried medium pipeline with the anti-freezing and moisture-proof effects, the heat energy secondary feedback layer comprises a metal thin strip covering the periphery of the heat energy storage and conduction layer, and the metal thin strip is a heat energy feedback sheet made of a rolling plate formed by one of an aluminum foil sheet, a polished stainless steel sheet and an electroplating sheet.
In the buried medium pipeline with the anti-freezing and damp-proof effects, the heat energy feedback sheet of the heat energy secondary feedback layer is an integral roll plate, the roll plate is wrapped on the periphery of the heat energy storage and conduction layer, and the edge of the closed part is laminated and fixed; or the heat energy feedback sheet of the heat energy secondary feedback layer is of a double-winding plate structure, the two winding plates are combined into a cylinder shape and wrapped on the periphery of the heat energy storage and conduction layer, and the two edges are laminated and fixed.
In the above-mentioned buried medium pipeline underground with frost-resistant dampproofing effect, insulating sealing layer is the banding structure of parcel in heat energy secondary feedback layer periphery, and this insulating sealing layer is made by high temperature resistant high strength silicon rubber insulating self-adhesive tape.
In the buried medium pipeline with the anti-freezing and damp-proof effects, the functional layer is made of a waterproof rock wool pipe, a rock wool pipe shell or a polyurethane foaming belt, the damp-proof layer is made of emulsified asphalt, a waterproof cold glue material and a glass fiber cloth waterproof coiled material or emulsified asphalt, a waterproof cold glue material and an ethylene propylene diene monomer waterproof coiled material, and the protective layer is one or a combination of a metal or plastic protective layer, a plastering protective layer or a felt, a foil and a cloth protective layer.
In the buried medium pipeline with the anti-freezing and moisture-proof effects, the electric tracing band is laid on the medium pipeline in a spiral mode, namely, a single electric tracing band is spirally wound on the medium pipeline in a single direction; or a single electric tracing band is oppositely spirally wound on the medium pipeline; or the two electric tracing bands are spirally wound on the medium pipeline in the same direction in a crossed manner.
In the buried medium pipeline with the anti-freezing and moisture-proof effects, the plurality of electric tracing bands are laid on the peripheral outer wall of the medium pipeline in parallel.
The utility model has the advantages that: the utility model discloses bury the medium pipeline underground and utilize comprehensive design principle with freeze proof dampproofing effect, adopt multilayer structure design and with the layer fissure of displacement, the additional insulating technology of layer pressure seam to lay the mode, solve the electric insulation and the sealed problem of electric tracing band when burying underground, utilize the technical processing mode on heat energy deposit conducting layer and heat energy secondary feedback layer simultaneously to improve the thermal efficiency of electric tracing band by a wide margin, reduce the energy consumption to further enlarge the original application scenario scope of electric tracing band and the range of application of the diameter specification of medium pipeline; the covered heat-preservation, cold-insulation and heat-insulation structure has the heat-preservation, heat-preservation and anti-freezing heat-insulation functions in cold seasons, and also has the cold-preservation and heat-insulation functions when the electric tracing band is not used in non-cold seasons.
Drawings
FIG. 1 is a schematic layout of a prior art electric trace heating antifreeze pipeline;
FIG. 2 is a schematic structural view of an embodiment of the buried medium pipe of the present invention;
FIG. 3 is a structural example of an electric tracing band;
FIG. 4A is a schematic view of a first electrical tracing band laying mode;
FIG. 4B is a schematic view of a second electrical tracing band laying mode;
FIG. 4C is a schematic view of a third electrical tracing band laying mode;
fig. 4D is a schematic view of a fourth electrical tracing band laying method.
The reference numbers in the figures denote:
01-a media conduit; 02-electric tracing band; 03-insulating layer; 04-binding tapes;
1-a heating structure; 2-a thermal energy storage and conduction layer; 3-heat energy secondary feedback layer; 4-an insulating sealing layer;
5-heat preservation, cold insulation and heat insulation structure, 51-functional layer, 52-moisture-proof layer and 53-protective layer.
Detailed Description
In order to solve the defects of poor insulating property, high energy consumption, low thermal efficiency, inconvenient construction and the like of the electric tracing band existing in the prior buried medium pipeline with the tracing band, the utility model provides a buried medium pipeline with frost-resistant and moisture-proof effects, the buried medium pipeline is of a multilayer structure and comprises a heating structure, a heat energy storage and conduction layer, a heat energy secondary feedback layer, an insulating sealing layer and a heat-preservation, cold-insulation and heat-insulation structure which are sequentially arranged from inside to outside, and the problems of electric insulation and sealing of electric tracing band when the electric tracing band is buried underground in a preset mode are solved by adopting a multilayer structure design and a laying mode of staggered joints at the same layer, pressed joints between layers and inlaid heat-preservation layers, meanwhile, the heat energy storage and conduction layer is utilized to solve the problems of heat concentration and short service life of the electric tracing band, the heat feedback technology greatly improves the heat efficiency of the electric tracing band, reduces the energy consumption and further expands the application range of the electric tracing band and the diameter specification of the medium pipeline.
The present invention will be described in detail below with reference to the accompanying drawings and examples, wherein the medium pipeline is embedded to have the anti-freezing and moisture-proof effects.
Fig. 2 shows an example of the structure of the buried medium pipe according to the present invention. As shown in fig. 2, the buried medium pipeline adopts the heat preservation and insulation technology of electric tracing band active heating to achieve the purpose of freezing resistance and moisture resistance, and can be buried in the freezing layer of cold and humid areas, in this embodiment, the technical measure of the medium pipeline is a multilayer structure, and includes a heating structure 1, a heat energy storage and conduction layer 2, a heat energy secondary feedback layer 3, an insulation sealing layer 4 and a heat preservation and insulation structure 5, which are arranged in sequence from inside to outside, wherein:
the heating structure 1 comprises an electric tracing band 02 arranged on a medium pipeline 01, as shown in fig. 3, the electric tracing band is a flat band with a multi-layer structure and a flat cross section, compared with a traditional tubular structure which is laid in parallel after the pipe is penetrated, the flat structure can increase the heat conduction effect, the heat tracing efficiency is high, the laying mode is flexible, the plane of the electric tracing band can be tightly adhered to the surface of the medium pipeline according to a preset winding mode, the space is saved, and the heat generation is uniform. The utility model discloses an outsourcing's electric tracing area, its lectotype can be confirmed according to the application scenario, can be automatic control temperature electric tracing area or constant power electric tracing area. The heat emitted by the electric tracing band 02 compensates the heat dissipated in the medium conveying process of the medium pipeline 01 so as to maintain the temperature of the medium within a certain range, and the purposes of heat preservation and freeze prevention are achieved. The electric tracing band 02 can be laid in such a way that a plurality of electric tracing bands are laid on the peripheral outer wall of the medium pipeline 01 in parallel (see fig. 4A), and the way is suitable for long-distance and large-diameter medium pipelines or hard electric tracing bands to ensure uniform heat dissipation; or wound in a spiral fashion around the media tube 01. The electric tracing band 02 is laid on the medium pipeline 01 in a spiral mode, and the length of the electric tracing band 02 laid on the medium pipeline 01 with unit length is determined by the heating power of the electric tracing band 02, the ambient environment conditions and the performance of the medium pipeline 01 (for example, the underground soil temperature in different regions has great difference, and the heating power of the electric tracing band and the winding mode of the electric tracing band are influenced by different materials and pipe wall thickness of the transmission medium pipeline and different transmission media). The laying mode can be the following modes: as shown in fig. 4B, a single electric tracing band 02 is spirally wound on the medium pipe 01 in a unidirectional manner; as shown in fig. 4C, a single electric tracing band 02 is oppositely spirally wound on the medium pipe 01, that is, both ends of the electric tracing band 02 are fixed first, the middle section (with a predetermined length) of the electric tracing band 02 is spirally wound on the medium pipe 01, and finally the end of the middle section is fixed; as shown in fig. 4D, the double electric tracing bands 02 are spirally wound on the medium pipe 01 in the same direction in a crossed manner.
The conventional electric tracing band is usually arranged between the medium pipeline 01 and the insulating layer, the heat conduction coefficient of the insulating material is generally very low, the heat of the surface of the electric tracing band 02 contacting with the insulating layer and the periphery form reactive heat and are gathered at the surface, the heat can not be effectively transferred to the medium pipeline 01, the waste and the loss of the heat (almost 50 percent of heat loss) are caused, and the service life of the electric tracing band 02 is reduced due to the local concentration of the heat at the contact surface.
In order to solve the problem, the utility model discloses in, heat energy deposit conducting layer 2 is used for collecting the face and the peripheral idle heat that storage electric power storage tracing band does not contact with medium pipeline 01, through absorption, storage, release to heat-conducting mode is fed back the heat to medium pipeline 01 for the first time. The heat energy storage and conduction layer 2 can be made of a metal wire mesh with high heat conduction performance, a porous flocculent layer is formed after the electric tracing band 02 and the medium pipeline 01 are laid and wrapped, and the layer can uniformly release heat generated on the surface of the electric tracing band 02 not in contact with the medium pipeline 01 on one hand, so that the phenomenon that the local temperature of the electric tracing band 02 is too high due to too local concentration and the service life of the electric tracing band 02 is reduced is avoided; on the other hand, the reactive heat generated by the electric tracing band can be absorbed and stored, and is uniformly released and fed back to the medium pipeline 01, so that the heat efficiency of the electric tracing band 02 is improved, and the medium pipeline 01 is maintained in a temperature range above the freezing point.
According to the material of the pipeline, the heat energy storage and transmission layer 2 is a mesh formed by any one or a combination of a plurality of wire meshes, aluminum wire meshes, copper wire meshes and stainless steel wire meshes, the wire meshes and the stainless steel wire meshes are preferably selected in consideration of cost, but the stainless steel wire meshes and materials in contact with the stainless steel wire meshes cannot generate electrochemical reaction. The heat energy storage and conduction layer 2 can be made into a roll-shaped mesh sheet and laid on the periphery of the electric tracing band 02 in a spiral winding mode, a half-lamination method is adopted during winding, the number of the mesh sheets can be determined according to the pipeline specification and application occasions, generally at least two layers are adopted, and the mesh sheet width of the heat energy storage and conduction layer 2 is preferably 100mm-150 mm. The fixing mode of the tail part of the silk screen can adopt hoop clamps or metal wires which are the same as the materials of the silk screen or non-metal binding bands with heat resistance to fix, and the materials can not generate electrochemical reaction with the materials at the joint part.
The heat energy secondary feedback layer 3 is a metal thin strip (heat energy feedback sheet) covering the periphery of the heat energy storage and conduction layer 2, and is used for uniformly wrapping and fixing the electric tracing band 02 and the heat energy storage and conduction layer 2 on a medium pipeline (or equipment), and simultaneously, the metal thin strip feeds back the heat released by the heat energy storage and conduction layer 2 to the medium pipeline (or equipment) again in a heat conduction and heat radiation mode, at the moment, the heat of the side, which is not in contact with the medium pipeline 01, of the electric tracing band 02 and the peripheral reactive heat almost completely act on the medium pipeline 01 through the combined action of the heat energy storage and conduction layer 2 and the heat energy secondary feedback layer 3, so that the heat efficiency is greatly improved, and the energy consumption is reduced.
The heat energy secondary feedback layer 3 is laid and fixed reasonably on the heat energy storage and conduction layer 2, and can be made of a coiled plate formed by one of an aluminum foil, a polished stainless steel sheet and an electroplating plate sheet according to the specification and application of the medium pipeline 01 and the mesh material of the heat energy storage and conduction layer 2.
The heat energy feedback sheet of the heat energy secondary feedback layer 3 can be an integral type coil plate which is wrapped on the periphery of the heat energy storage and conduction layer 2 and folds and fixes the edge of the closed part of the coil plate; or the heat energy feedback sheet is of a double-winding plate structure, the two winding plates are combined into a cylinder shape and wrapped on the periphery of the heat energy storage and conduction layer 2, and the two edges are laminated and fixed; preferably, the heat energy feedback sheet is a coiled sheet with the width of 100mm-150mm, and is spirally wound on the periphery of the heat energy storage and conduction layer 2, and a half-lap-pressing type is adopted during winding, so that firm winding is ensured. The head and tail fixing mode can adopt hoop clamps or metal wires or non-metal binding bands with heat resistance which are the same as those of the secondary feedback layer, and the materials cannot generate electrochemical reaction with the materials at the joint.
Because of electric tracing area 02 is very high to waterproof nature and insulating nature requirement, under the protection of not poling, obviously apply and establish the pipeline when burying underground, need carry out one step and strengthen electric tracing area insulating seal effect, consequently, the utility model discloses set up electric tracing area's insulating seal layer 4. The insulating sealing layer 4 is a strip-shaped structure wrapped on the periphery of the heat energy secondary feedback layer 3, such as an insulating sealing tape, so that the primary insulating effect of the electric tracing band is further enhanced, the pipe penetrating protection effect of the electric tracing band is achieved, and the insulating sealing tape can be made of a high-temperature-resistant high-strength silicon rubber insulating self-adhesive tape. Preferably, the bandwidth of the insulating sealing tape is 100mm-150mm, the insulating sealing tape is spirally wound on the periphery of the heat energy secondary feedback layer 3, a half-lamination method is adopted for winding, the surface of the heat energy secondary feedback layer 3 is cleaned before winding, and the high-strength silicon rubber tape is longitudinally stretched, so that the width of the insulating sealing tape is 3/4 of the original width, and the insulating sealing tape is wound and compacted at the same time, and the sealing effect is ensured.
In order to prevent the heat generated by the electric tracing band from being dissipated to the external ambient environment, an insulating layer is required. For burying underground (especially in the cold humid area freezing layer) and being used for using in order to prevent frostbite as purpose medium pipeline, ordinary heat preservation no longer is suitable for, and this layer not only needs to consider the heat preservation, the heat preservation of cold season, frost-proof heat insulation function, when still considering not using electric tracing band 02 in cold season simultaneously, the cold insulation operating condition of cold insulation that the medium temperature of flow is less than ambient temperature in the pipeline, the utility model discloses in need lay the heat preservation cold insulation structure 5 that has anti-freeze and heat preservation dual efficiency simultaneously in the periphery of insulating seal layer 4 for when not using electric tracing band heating in cold season, prevent that medium pipeline (or equipment) surface from producing the dewfall, reduce the efficiency of heat preservation cold insulation. The original annual electric tracing heating mode is changed into a cold season heating mode, and the electric tracing does not work in non-cold seasons, so that the energy consumption of the electric tracing band is greatly reduced.
The utility model discloses in, heat preservation cold insulation structure 5 is multilayer composite construction, include the functional layer 51 that sets gradually from inside to outside, dampproof course 52 and protective layer 53, the damp structure is not set up to conventional heat preservation, so that do not use the electric tracing area during operation in non-cold season, medium temperature is less than ambient temperature in the pipeline, the heat preservation surface produces in the condensation water infiltration heat preservation, because the temperature ratio is lower, air infiltration cold insulation layer, will be less than the dew point temperature of air behind the air cooling, cause the moisture in the air to be condensed into water or even ice, because the entering of moisture, the effect greatly reduced that will make cold insulation, insulation material receives the loose very big influence to the heat preservation effect that wets simultaneously. The effect of the heat preservation layer is reduced, the cold preservation effect under the condition of stopping the electric tracing work state is considered on the premise of ensuring the heat preservation effect in the design, the material with the heat preservation effect and the cold preservation effect is selected, and the heat preservation, cold preservation and heat insulation structure 5 is provided with the moisture-proof layer 52 outside the functional layer 51; in addition, the thermal insulation structure 5 should have certain intensity, should not receive dead weight or accidental external force effect and destroy, should take the reinforcement measure, for this purpose, the utility model discloses set up protective layer 53 in the outside of dampproof course 52.
The material, thickness and structure of the heat preservation, cold insulation and heat insulation structure 5 should be determined according to the application requirements (including medium heat preservation, cold insulation requirements and performance requirements and the material performance of the medium pipeline, etc.) and the power of the electric tracing band 02, and the heat preservation, cold insulation and heat insulation structure 5 should be divided into multi-layer construction, for example, the utility model discloses divide into 1-3 layers and carry out construction. According to actual measurement, the heat loss caused by gap radiation and convection is several times to dozens of times of that of a good heat-preservation position, so that during construction, the heat-preservation, cold-preservation and heat-insulation structure 5 is laid by adopting the modes of same-layer inlaying, multi-layer staggered joint and inner-outer-layer seam pressing.
In one embodiment, the functional layer 51 may be made of a waterproof rock wool tube, a rock wool tube shell or a polyurethane foam tape, the waterproof rock wool tube or the rock wool tube shell has the properties of moisture resistance, heat preservation, heat insulation, cold insulation and the like, has a certain chemical stability, and does not deliquesce even if being used for a long time under a humid condition, and the material is a non-combustible material and has no corrosion effect on equipment, so that the functional layer is particularly suitable for the requirements of the application occasions of the utility model; the moisture-proof layer 52 can be made of emulsified asphalt, waterproof cold glue stock and glass cloth waterproof coiled material or emulsified asphalt, waterproof cold glue stock and ethylene propylene diene monomer waterproof coiled material, and the thickness of the layer is usually designed by adopting the most adverse environment design principle; the protective layer 53 can protect the heat preservation, cold insulation and heat insulation structure 5 from being damaged and prevent water from entering, and the material of the protective layer has the advantages of water resistance, fire resistance, good chemical properties and the like, and can be one or a combination of a protective layer made of metal or plastic (such as a PVC pipe shell or a glass fiber reinforced plastic thin plate), a plastering protective layer or a protective layer made of felt, foil and cloth. The protective layer 53 is preferably constructed by a winding method, the winding method is adopted, the overlapping part is generally one third to one half of the width of the protective layer 53, the functional layer 51 and the moisture-proof layer 52 are tightly wrapped during winding, the phenomena of loosening, flanging, creasing and bubbling are not allowed, and the starting end and the tail end are firmly tied by iron wires. For example, when applying a protective layer of asbestos cement, a rough moisture barrier 52 should be applied to improve the adhesion of the two materials.
The utility model discloses bury medium pipeline underground with above-mentioned structure adopts the electric tracing band initiative heating mode to carry out freeze proof thermal insulation, is applicable to the pipeline underground of long-term operation in cold humid area freezing intraformational. The medium pipeline 01 is provided with a heating structure 1 formed by reasonably laying an electric tracing band 02 on the periphery of the pipeline; porous meshes of a heat energy storage and transmission layer 2 are laid on the peripheries of the electric tracing band 02 and the medium pipeline 01, the idle heat on the outer side surface (the side surface which is not contacted with the medium pipeline) of the electric tracing band 02 and the periphery of the electric tracing band 02 is collected, stored and uniformly released, and the collected heat is fed back to the medium pipeline 01 in a heat conduction mode; the metal thin strip of the heat energy secondary feedback layer 3 is laid on the periphery of the heat energy storage and conduction layer 2, the electric tracing band 02 and the net piece of the heat energy storage and conduction layer 2 are wrapped and fixed on the medium pipeline 01, and heat released by the heat energy storage and conduction layer 2 is fed back to the medium pipeline 01 again in a heat conduction and heat radiation mode by the metal thin strip, so that the heat efficiency of the electric tracing band 02 is improved, and the energy consumption is reduced; the insulating sealing layer 4 is made of a high-temperature-resistant high-strength silicon rubber insulating self-adhesive tape, is wrapped and fixed on the heat energy secondary feedback layer 3 and serves as a secondary insulating sealing waterproof layer of the electric tracing band 02; the heat-preservation, cold-insulation and heat-insulation structure 5 is arranged on the outermost layer, not only has the heat-preservation, heat-insulation and anti-freezing heat-insulation functions in cold seasons, but also has the cold-preservation and heat-insulation functions in non-cold seasons when the electric tracing band 02 is not used, and due to the arrangement of the moisture-proof layer, the functional layer 51 is prevented from dewing when the electric tracing band 02 does not work in non-cold seasons, and the heat-insulation effect is reduced. The utility model discloses bury medium pipeline application comprehensive design principle underground with frost resistant dampproofing effect, adopt multilayer structure design and inlay with the layer, multilayer fissure of displacement, the mode of laying of seam is pressed to the layer, solve the electric insulation and the sealed problem of electric tracing area 02 when burying underground, the soaking and the heat feedback technique that utilize heat energy to save conducting layer 2 and heat energy secondary feedback layer 3 simultaneously increase substantially the thermal efficiency of electric tracing area, reduce the energy consumption, and further enlarge the range of application of electric tracing area and medium pipeline's diameter specification.
The manufacturing method of the embedded medium pipeline with the anti-freezing and damp-proof effects comprises the following steps:
firstly, preparing, namely, the medium pipeline is qualified in welding seam, pressure test and air tightness test, and the measures of derusting, painting and corrosion prevention are finished, and the outer surface of the medium pipeline is kept clean and dry;
and step two, sequentially laying a heating structure 1, a heat energy storage and conduction layer 2, a heat energy secondary feedback layer 3, an insulating sealing layer 4 and a heat preservation, cold insulation and heat insulation structure 5 on the periphery of the medium pipeline 01 from inside to outside.
In the second step, the concrete steps include:
in step S1, an electric tracing band 02 is laid on the outer circumference of the medium pipe 01 as the heating structure 1.
Preferably, the electric tracing band 02 is spirally laid on the outer circumference of the medium pipe 01, i.e., a single electric tracing band (02) is spirally wound on the medium pipe (01) in a unidirectional manner (see fig. 4B); or a single electric tracing band (02) is oppositely spirally wound on the medium pipeline 01 (see fig. 4C); or two electric tracing bands (02) are spirally wound on the medium pipeline (01) in the same direction in a crossed mode (see figure 4D).
In step S2, the thermal energy storage conductive layer 2 is laid on the outer circumference of the medium pipe 01 and the electric tracing band 02.
Specifically, the heat energy storage and transmission layer 2 is a coiled mesh formed by any one or a combination of a plurality of iron wire meshes, aluminum wire meshes, copper wire meshes and stainless steel wire meshes, is laid on the periphery of the electric tracing band 02 in a spiral winding manner, and adopts a half-lamination method during winding.
In step S3, the heat energy secondary feedback layer 3 includes a heat energy feedback sheet covering the periphery of the heat energy storage and conduction layer 2, and the electric tracing band 02 and the heat energy storage and conduction layer 2 are uniformly wrapped and fixed on the medium pipe (or equipment).
Specifically, the heat energy feedback sheet of the heat energy secondary feedback layer 3 is made of a rolling plate formed by one of an aluminum foil sheet, a polished stainless steel sheet and an electroplating sheet; the heat energy feedback sheet of the heat energy secondary feedback layer 3 is an integral type rolling plate, and the rolling plate wraps the periphery of the heat energy storage and conduction layer 2 to overlap and fix the edge of the closed part of the rolling plate; or the heat energy feedback sheet is of a double-winding plate structure, the two winding plates are combined into a cylinder shape and wrapped on the periphery of the heat energy storage and conduction layer 2, and the two edges are laminated and fixed; preferably, the heat energy feedback sheet is a coiled sheet with the width of 100mm-150mm, and is spirally wound on the periphery of the heat energy storage and transmission layer 2, and a half-lap pressure type is adopted during winding.
And step S4, wrapping the insulating sealing layer 4 on the periphery of the heat energy secondary feedback layer 3.
Specifically, insulating sealing layer 4 is the band-shaped structure (insulating sealing area) of being made by the high strength silicon rubber self-adhesive tape of high temperature resistance, and this insulating sealing area spiral winding adopts half-lamination method in the 3 peripheries of heat energy secondary feedback layer, the winding, and the surface on clean heat energy secondary feedback layer 3 before the winding, and vertically stretches high strength silicon rubber area for this insulating sealing area width is 3/4 of former width, and the limit is twined the limit and is compacted.
In step S5, the heat insulating structure 5 is laid on the outer periphery of the insulating seal layer 4.
Specifically, the heat preservation, cold insulation and heat insulation structure 5 is a multilayer composite structure and comprises a functional layer 51, a moisture-proof layer 52 and a protective layer 53 which are sequentially arranged from inside to outside, and the heat preservation, cold insulation and heat insulation structure 5 is laid by adopting a same-layer staggered joint and inner-outer laminated joint mode.
It will be understood by those skilled in the art that these examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention, and that various equivalent modifications and adaptations of the invention are intended to fall within the scope of the invention disclosed herein.
Claims (10)
1. The utility model provides an bury medium pipeline underground with frost resistant dampproofing effect, for the electric heat tracing medium pipeline that has multilayer structure, be suitable for burying underground in cold humid area frozen layer, its characterized in that, including heating structure (1), heat energy storage conducting layer (2), heat energy secondary feedback layer (3), insulating seal layer (4) and heat preservation cold insulation structure (5) that at least one medium pipeline (01) and this medium pipeline periphery set gradually from inside to outside, heating structure (1) is electric heat tracing area (02) of arranging on medium pipeline (01), and heat preservation cold insulation structure (5) are multilayer composite construction, include functional layer (51) that are used for heat preservation and cold preservation that set gradually from inside to outside, have cold preservation and prevent dampproof course (52) of dewing and have waterproof reinforcement effect's protective layer (53).
2. A buried medium pipe with frost and moisture resistant effects as claimed in claim 1, wherein said heat energy storage and conduction layer (2) is made of a wire mesh and is laid on the outer periphery of the electric tracing band (02) and the medium pipe (01) to form a porous flocculent layer.
3. A buried medium pipe with antifreeze and moisture proof effects according to claim 2, wherein said heat energy storing and conducting layer (2) is a mesh formed by any one or a combination of iron wire mesh, aluminum wire mesh, copper wire mesh, stainless steel wire mesh, and the mesh does not electrochemically react with the material in contact therewith, and the mesh width is 100mm to 150 mm.
4. A buried medium pipe having antifreeze and moisture proof effects according to claim 2, wherein said heat energy storing and conducting layer (2) is a rolled mesh, at least two layers of which are spirally wound around the outer peripheries of the electric tracing band (02) and the medium pipe (01) in a half-lap method.
5. A buried medium pipe having antifreeze and moisture proof effects according to any one of claims 1 to 4, wherein said heat energy secondary feedback layer (3) comprises a thin metal strip covering the outer periphery of the heat energy storing and conducting layer (2), said thin metal strip being a heat energy feedback sheet made of a rolled plate formed of one of an aluminum foil, a polished stainless steel sheet, and an electroplated sheet.
6. The buried medium pipeline with frost and moisture resistant effects as claimed in claim 5, wherein the heat energy feedback sheet of the heat energy secondary feedback layer (3) is an integral roll plate, the roll plate wraps the periphery of the heat energy storage and conduction layer (2), and the edge of the closed part is overlapped and fixed; or the heat energy feedback sheet of the heat energy secondary feedback layer (3) is of a double-winding plate structure, the two winding plates are combined into a cylinder shape and wrapped on the periphery of the heat energy storage and conduction layer (2), and the two edges are laminated and fixed.
7. An embedded medium pipeline with frost and moisture resistance effects according to any of claims 1 to 4, wherein the insulating sealing layer (4) is a belt-shaped structure wrapped on the periphery of the heat energy secondary feedback layer (3), and is made of high-temperature-resistant high-strength silicon rubber insulating self-adhesive tape.
8. A buried medium pipe with antifreeze and moisture proof effect according to any one of claims 1 to 4, wherein the functional layer (51) is made of waterproof rock wool pipe, rock wool pipe shell or polyurethane foam tape, the moisture proof layer (52) is made of emulsified asphalt, waterproof cold glue and glass wool cloth waterproof coiled material or emulsified asphalt, waterproof cold glue and ethylene propylene diene monomer waterproof coiled material, and the protective layer (53) is one or more of metal or plastic protective layer, a coated protective layer or a combination of felt, foil and cloth protective layer.
9. A buried medium pipe with antifreeze and moisture proof effect according to any one of claims 1 to 4, wherein said electric tracing band (02) is laid on the medium pipe (01) in a spiral manner, i.e. a single electric tracing band (02) is spirally wound on the medium pipe (01) in one direction; or a single electric tracing band (02) is oppositely spirally wound on the medium pipeline (01); or the two electric tracing bands (02) are spirally wound on the medium pipeline (01) in the same direction in a crossed manner.
10. A buried medium pipe with antifreeze and moisture proof effects according to any one of claims 1 to 4, wherein a plurality of electric tracing bands (02) are laid in parallel on the peripheral outer wall of the medium pipe (01).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067911A (en) * | 2019-05-16 | 2019-07-30 | 中建材行业生产力促进中心有限公司 | Embedded medium pipeline and preparation method thereof with freeze proof dampproof effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067911A (en) * | 2019-05-16 | 2019-07-30 | 中建材行业生产力促进中心有限公司 | Embedded medium pipeline and preparation method thereof with freeze proof dampproof effect |
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