CN112901910A - Protective heat-insulating structure for heat-insulating pipeline joint and construction method thereof - Google Patents
Protective heat-insulating structure for heat-insulating pipeline joint and construction method thereof Download PDFInfo
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- CN112901910A CN112901910A CN202110343022.8A CN202110343022A CN112901910A CN 112901910 A CN112901910 A CN 112901910A CN 202110343022 A CN202110343022 A CN 202110343022A CN 112901910 A CN112901910 A CN 112901910A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/10—Sleeveless joints between two pipes, one being introduced into the other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
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Abstract
The invention relates to a heat preservation pipeline interface protection heat preservation structure and a construction method thereof, wherein the heat preservation pipeline interface protection heat preservation structure comprises an interface heat preservation material and an interface elastic sleeve, the left end of the interface elastic sleeve is sleeved on the surface of a left outer protective pipe, the inner diameter of a left port of the interface elastic sleeve is smaller than or equal to the outer diameter of the left outer protective pipe of the left heat preservation pipe, the right end of the interface elastic sleeve is sleeved on the surface of a right outer protective pipe, the inner diameter of a right port of the interface elastic sleeve is smaller than or equal to the outer diameter of the right outer protective pipe of the right heat preservation pipe, a closed cavity is formed between the interface elastic sleeve and the right end surface of the left heat preservation pipe, the outer wall of a left pipe body of the left heat preservation pipe and the left end. The heat-insulating pipeline interface protection and heat-insulating structure realizes the functions of effectively sealing and heat-insulating protection of the heat-insulating pipeline interface through the interface elastic sleeve, and is simple to install.
Description
Technical Field
The invention relates to a heat insulation structure, in particular to a heat insulation structure for a pipeline joint.
Background
The heat preservation pipeline is widely applied to the fields of hot spring water transportation, cold water heat preservation, factory waste heat transmission, urban centralized heat supply and the like, particularly the socket joint type flexible interface heat preservation pipeline has unique advantages in the fields of installation, construction and the like, but the outer diameter of the base material in the interface area of the socket joint type heat preservation pipeline is obviously higher than that of the straight pipe, and the following problems exist when the interface heat preservation is carried out; firstly, the method comprises the following steps: the interface protection is carried out by adopting a commercially available heat-shrinkable belt, the installation difficulty is high, the complete isolation of the heat-insulating layer in the pipeline and the soil cannot be ensured, and water in the soil can enter the interface area and the heat-insulating layer of the pipeline. Secondly, the method comprises the following steps: when the flat plate electric hot melting sleeve is adopted for electric hot melting, the installation is difficult, the thickness of the interface area heat-insulating layer is lower, and the PE hot melting sleeve can be aged and failed at high temperature in a high-temperature condition under the condition of long-term operation. Thirdly, the method comprises the following steps: the thermal shrinkage belt is adopted to carry out thermal shrinkage port heat preservation sealing on the pipeline port, but under the high-temperature condition, the hot melt adhesive on the thermal shrinkage belt is softened, the short-term failure of the thermal shrinkage belt is accelerated, and the long-term heat supply protection stability cannot be achieved. Fourthly: the flexible interface can have pipeline interface infiltration in the operation. Above problem all can lead to moisture to get into in the interface region heat preservation, then in the reentrant pipeline heat preservation, leads to heat preservation carbonization inefficacy, and polyurethane foam obturator destroys, loses the heat preservation effect, and the heat preservation can take place to decompose simultaneously, produces acid radical ion and leads to pipeline accelerated corrosion.
The patent with the authorization publication number of CN211398955U discloses a seamless waterproof heat-preservation joint, which adopts an electric hot melting mode to heat PE sleeves to outer protective pipes at two ends of a heat-preservation pipe joint, the requirement on the size precision of the PE sleeves is high, the heat melting process needs to be electrified, the time is consumed, the installation difficulty is high, the local heat melting effect is poor, and the leakage rate is extremely high. The expansion and elongation of the pipeline can occur during the operation process, which causes local friction with soil and local damage. When the structure is applied to the connector with the bulges of the nodular cast iron pipe, the heat-insulating layer at the connector is thinned, the local aging speed is accelerated, and the service life of the pipeline is shortened.
The patent of grant publication number CN201302016Y discloses a submarine pipeline waterproof heat preservation sealing joint, adopts anticorrosive thermal contraction layer to carry out waterproof sealing with the insulating tube port, and heat supply pipeline is at the actual motion in-process, and the hot melt adhesive on thermal contraction layer takes place to melt, and is inefficacy promptly, and water or joint infiltration in soil can directly lead to water to get into the heat preservation, destroys the heat preservation.
To sum up, at present, no suitable interface heat insulation structure exists, the requirement of easy installation during construction can be met, and effective sealing and heat insulation protection of the heat insulation pipeline interface can be realized during use.
Disclosure of Invention
The invention aims to solve the technical problem of providing a heat-insulating pipeline interface protection and heat-insulating structure which is simple to install and can effectively seal and insulate and protect a heat-insulating pipeline interface.
The invention relates to a protective and heat-insulating structure for a heat-insulating pipeline interface, which comprises an interface heat-insulating material and an interface elastic sleeve, wherein the left end of the interface elastic sleeve is sleeved on the surface of a left outer protective pipe of a left heat-insulating pipe at the interface of a heat-insulating pipeline, the inner diameter of a left port of the interface elastic sleeve is less than or equal to the outer diameter of the left outer protective pipe of the left heat-insulating pipe, the right end of the interface elastic sleeve is sleeved on the surface of a right outer protective pipe of a right heat-insulating pipe at the interface of the heat-insulating pipeline, the inner diameter of a right port of the interface elastic sleeve is less than or equal to the outer diameter of the right outer protective pipe of the right heat-insulating pipe, a closed cavity is formed between the interface elastic sleeve and the right end surface of the left heat-insulating pipe, the outer wall.
The interface protection and heat insulation structure of the heat insulation pipeline further comprises a left waterproof sleeve and/or a right waterproof sleeve, wherein the left waterproof sleeve is used for separating a left heat insulation layer of the left heat insulation pipe from the interface heat insulation material, and the right protective sleeve is used for separating a right heat insulation layer of the right heat insulation pipe from the interface heat insulation material.
The invention relates to a protective and heat-insulating structure for a heat-insulating pipeline interface, wherein a left waterproof sleeve comprises a left sealing sleeve sleeved on the outer wall of a left pipe body of a left heat-insulating pipe, the left end of the left sealing sleeve is provided with a left flange layer integrally formed with the left sealing sleeve, and the outermost side of the left flange layer extends outwards to the interface elastic sleeve and is integrally connected with the interface elastic sleeve; the right protection sleeve comprises an inner sealing sleeve sleeved on the outer wall of the right pipe body and an outer sealing sleeve sleeved on the outer wall of the left end of the right outer protection pipe, the right end face of the inner sealing sleeve is connected with the left end face of the outer sealing sleeve in an integrated mode through a right flange layer, the right flange layer is tightly attached to the left end face of the right heat insulation layer, and the right end of the interface elastic sleeve wraps the periphery of the outer sealing sleeve.
The interface protection and heat insulation structure of the heat insulation pipeline comprises an interface heat insulation material and a filling type heat insulation material, wherein the interface heat insulation material comprises a prefabricated heat insulation material wrapped on the outer wall of a left pipe body of a left heat insulation pipe and the filling type heat insulation material filled on the outer side of the prefabricated heat insulation material.
The invention relates to a protective and heat-insulating structure for an interface of a heat-insulating pipeline, wherein the left end of an interface elastic sleeve is fixed on a left outer protective pipe of a left heat-insulating pipe through a left tightening device or sealant, and the right end of the interface elastic sleeve is fixed on the surface of a right outer protective pipe of a right heat-insulating pipe through a right tightening device or sealant.
According to the protective heat-insulating structure for the interface of the heat-insulating pipeline, disclosed by the invention, the inner walls of the left and right ports of the interface elastic sleeve are respectively provided with the waterlines for enhancing the sealing effect.
The invention relates to a protective and heat-insulating structure for a heat-insulating pipeline interface, wherein the right end of an interface elastic sleeve is sleeved on a right outer protective pipe of a socket section of a right heat-insulating pipe.
The invention relates to a protective and heat-insulating structure for an interface of a heat-insulating pipeline, wherein the right end of an interface elastic sleeve is sleeved on a right outer protective pipe of a horizontal section of a right heat-insulating pipe.
The interface elastic sleeve is used for wrapping one of special-shaped structures with rectangular, conical, elliptical, circular or other combined type longitudinal sections at the middle part of the interface heat-insulating material.
The invention relates to a protective and heat-insulating structure for a heat-insulating pipeline connector, wherein two middle tightening devices are arranged in the middle of an elastic connector sleeve in a bilateral symmetry manner.
The invention relates to a construction method for protecting a heat-insulating structure by using a heat-insulating pipeline joint,
s1: and cleaning the port heat-insulating layer, the outer protective pipe surface layer and the outer walls of the socket and the socket base body at the joints of the left heat-insulating pipeline and the right heat-insulating pipeline so as to ensure that the surfaces are smooth and have no oil stains and impurities.
S2: on the left outer pillar of the left insulating tube of the left port cover of interface protection elastic sleeve, will protect the waterproof cover in a left side of elastic sleeve integrated into one piece simultaneously and overlap on the body of a left side for the left flange layer of waterproof cover in a left side closely laminates at the left insulating layer terminal surface of left insulating tube, then turns over the periphery of its left end on the right-hand member of interface protection elastic sleeve.
S3: the inner sealing sleeve of the right waterproof sleeve is sleeved on the bellmouth base body of the right insulating pipe, and the outer sealing sleeve of the right waterproof sleeve is sleeved at the left end of the right outer protecting pipe, so that the right flange layer of the right waterproof sleeve is tightly attached to the right insulating layer of the right insulating pipe.
S4: installing the socket of the left insulating pipe into the socket of the right insulating pipe, winding a prefabricated insulating material on the outer wall of the left pipe body at the interface of the insulating pipe and the left sealing sleeve of the left waterproof sleeve after the insulating pipe is connected in place, and turning down the right end of the interface elastic sleeve to the outer sealing sleeve wrapped on the outer wall of the right outer protective pipe.
S5: the left end and the right end of the interface elastic sleeve are respectively fixed on the left outer protecting pipe and the right outer protecting pipe through a left tightening device and a right tightening device or sealant.
S6: and the interface elastic sleeve is provided with a material injection hole, and the air tightness of the sealing cavity wrapped by the interface elastic sleeve is detected through the material injection hole.
S7: and after the air tightness is detected without problems, the air outlet hole is formed in the interface elastic sleeve, and then the filling molding heat-insulating material is injected into the cavity through the material injection hole until the filling molding heat-insulating material is filled in the cavity space, so that a combined body is formed with the prefabricated molding heat-insulating material.
S8: and the material injection hole and the air outlet hole are blocked.
According to the heat-insulating pipeline interface protection and heat-insulating structure, the heat-insulating pipeline interface is effectively and completely separated from external soil through the interface elastic sleeve, so that the functions of effective sealing and heat-insulating protection of the heat-insulating pipeline interface are realized, meanwhile, the heat-insulating pipeline interface protection and heat-insulating structure is simple to install, and the problems that in the prior art, the installation is complicated and a stable layer is easy to damage are solved.
According to the heat-insulating pipeline joint protection heat-insulating structure, water in soil can be effectively prevented from permeating the heat-insulating layers of the left and right heat-insulating pipes due to the fact that the joint elastic sleeves are damaged through the left waterproof sleeve and the right waterproof sleeve; meanwhile, water can be effectively prevented from permeating into the heat insulation layers of the left and right heat insulation pipes due to water seepage of the interface matrix, the heat insulation layers of the heat insulation pipes can be effectively protected by the left waterproof sleeve and the right waterproof sleeve, and the service life of the heat insulation layer of the heat insulation pipe is prolonged.
The following describes the protective and thermal insulation structure of the thermal insulation pipeline joint in further detail with reference to the attached drawings.
Drawings
Fig. 1 is a schematic view of the protective and thermal insulation structure for an interface of a thermal insulation pipeline according to the first embodiment of the present invention installed at an interface of a pipeline;
fig. 2 is a schematic view of the protective and thermal insulation structure for an interface of a thermal insulation pipeline according to the second embodiment of the present invention installed at an interface of a pipeline;
fig. 3 is a schematic structural view of the second embodiment of the present invention after the elastic interface sleeve and the left waterproof sleeve are integrally formed;
fig. 4 is a schematic mechanism diagram of the right waterproof jacket of the second embodiment:
fig. 5 is a schematic view of the protective and thermal insulation structure for an interface of a thermal insulation pipeline according to the third embodiment of the present invention installed at an interface of a pipeline;
fig. 6 is a schematic structural view of the third embodiment after the elastic interface sleeve and the left waterproof sleeve are integrally formed.
Detailed Description
In the first embodiment, as shown in fig. 1, the interface protection and thermal insulation structure of the thermal insulation pipeline is used for a thermal insulation pipeline processed by a winding process, and when the left thermal insulation pipe 5 is connected with the right thermal insulation pipe 6, a socket base body at the right end of the left thermal insulation pipe 5 is installed in a socket base body with a sealing assembly at the left end of the right thermal insulation pipe 6, so that the left pipe body 50 in the left thermal insulation pipe 5 is hermetically connected with the right pipe body 60 of the right thermal insulation pipe 6. After the two heat preservation pipes are connected together, a heat preservation pipeline interface is formed. The left end surface of the insulating layer of the right insulating pipeline processed by the winding process extends to the upper part of the socket base body. The invention relates to a protective heat-insulating structure for a heat-insulating pipeline interface, which comprises an interface heat-insulating material, an interface elastic sleeve 2, a left tightening device 3 and a right tightening device 4. The interface elastic sleeve 2 is made of elastic materials such as rubber, the left end of the interface elastic sleeve 2 is sleeved on the surface of the left outer protective pipe 51 of the left heat preservation pipe 5 at the interface of the heat preservation pipeline, and the inner diameter of the left port of the interface elastic sleeve 2 is smaller than or equal to the outer diameter of the left outer protective pipe 51 of the left heat preservation pipe 5. The left tightening device 3 tightens the left end of the interface elastic sleeve 2 on the left outer protecting pipe 51 of the left heat preservation pipe 5, the right end of the interface elastic sleeve 2 is sleeved on the surface of the right outer protecting pipe 61 of the bearing section of the right heat preservation pipe 6 at the interface of the heat preservation pipeline, and the inner diameter of the right end port of the interface elastic sleeve 2 is smaller than or equal to the outer diameter of the right outer protecting pipe 61 of the right heat preservation pipe 6. The right binding device 4 binds the right end of the interface elastic sleeve 2 on the surface of the right outer protecting pipe 61 of the right insulating pipe 5. The inner walls of the left and right ports of the interface elastic sleeve 2 are respectively provided with a waterline 21 (refer to fig. 2) for enhancing the sealing effect. The left tightening device 3 and the right tightening device 4 in this embodiment may also be replaced by a sealant, that is, the left port of the elastic interface sleeve 2 is fixed on the left outer sheath 51 by the sealant, and the right port of the elastic interface sleeve 2 is fixed on the surface of the outer sheath 61 by the sealant. A sealed cavity is formed between the right end face of the interface elastic sleeve 2 and the left heat preservation pipe 5, the outer wall of the left pipe body 50 of the left heat preservation pipe and the left end face of the right heat preservation pipe 6, and the interface heat preservation material is filled in the sealed cavity, so that effective heat preservation of the pipeline interface can be realized. Interface elastic sleeve 2's left and right port closely overlaps respectively in the left and right outer pillar 51 of pipeline kneck, on 61, can block apart insulating tube interface and outside soil completely effectively, prevent that moisture in the soil from passing through in the insulating tube interface gets into insulating tube's the heat preservation, the heat preservation has effectively been protected, simultaneously compare with prior art, interface elastic sleeve 2's installation is simple, need not to adopt electric heat to melt or the naked light toasts, the validity and the security of the construction of having guaranteed of insulating tube interface have been improved. The joints of the heat preservation pipelines are easy to generate telescopic deformation during heat supply and simultaneously bear the pressure of outside soil, and the left and right tightening devices 3 and 4 can ensure that the left and right ports of the joint elastic sleeve 2 are firmly sleeved on the outer protective pipes of the left and right heat preservation pipes 5 and 6 and are placed to be separated from the outer protective pipes when stressed. The left and right tightening means 3, 4 may be any one of tightening bands, metal clips, plastic clips, etc., and may be made of a metal or non-metal material that provides a pressing force.
The interface heat insulating material can be any one of a filling type heat insulating material, a prefabricated type heat insulating material or a combination of the filling type heat insulating material and the prefabricated type heat insulating material. The interface insulation material of this embodiment selects the combination of filling type insulation material and prefabricated type insulation material, and it includes prefabricated type insulation material 11 that wraps up in the outer wall of left body 50 of left insulating tube 5 and fills the filling type insulation material 12 in the prefabricated type insulation material 11 outside. The prefabricated heat insulating material 11 can be spirally wound on the left pipe body 50 of the left heat insulating pipe 5 or bound on the left pipe body 50. The filling type heat insulation material 12 is injected into the cavity through the material injection hole formed in the interface elastic sleeve 2, and heat insulation is realized through self expansion and foaming of the heat insulation material. The combination of the filling type heat-insulating material and the prefabricated type heat-insulating material can greatly improve the heat-insulating property of the interface of the heat-insulating pipeline.
The construction method of the heat preservation pipeline interface protection heat preservation structure comprises the following steps:
s1: and cleaning the port heat-insulating layer, the outer protective pipe surface layer and the outer walls of the socket and the socket base body at the joints of the left heat-insulating pipeline and the right heat-insulating pipeline so as to ensure that the surfaces are smooth and have no oil stains and impurities.
S2: the left port of the interface protection elastic sleeve 2 is sleeved on the left outer protective pipe 51 of the left heat preservation pipe 5, and the right end of the interface protection elastic sleeve 2 is turned upwards to the periphery of the left end.
S3: the socket of the left heat-insulating pipe 5 is installed into the socket of the right heat-insulating pipe 6, after the heat-insulating pipeline is connected in place, the prefabricated heat-insulating material 11 is wound on the outer wall of the left pipe body 50 at the joint of the heat-insulating pipeline, and then the right end of the joint elastic sleeve 2 is turned downwards to the outer wall of the right outer protective pipe 61, located on the periphery of the socket base body, of the right heat-insulating pipe 6.
S4: the left and right ends of the interface elastic sleeve 2 are fixed on the left and right outer protective tubes 51, 61 through the left and right tightening devices 3, 4 or the sealant respectively.
S5: and a material injection hole is formed in the interface elastic sleeve 2, and the air tightness of the sealing cavity wrapped by the interface elastic sleeve 2 is detected through the material injection hole.
S6: after the air tightness detection is carried out without problems, air outlets are formed in the interface elastic sleeve 2, and then the filling molding heat-insulating material 12 is injected into the cavity through the material injection holes until the filling molding heat-insulating material is filled in the cavity space, so that a combined body is formed by the filling molding heat-insulating material and the prefabricated molding heat-insulating material 11.
The heat-insulating pipeline interface protection and heat-insulating structure solves the problems of heat insulation and protection at the heat-insulating pipeline interface processed by a winding process, effectively and completely separates the heat-insulating pipeline interface from external soil through the interface elastic sleeve, realizes the functions of effective sealing and heat insulation protection on the heat-insulating pipeline interface, is simple to install, and solves the problems of complex installation and easy damage to a heat-insulating layer in the prior art.
In the second embodiment, as shown in fig. 2 and 3, the insulating pipe joint protection and insulation structure of the present invention is different from the first embodiment in that: the left insulating layer 52 of the left insulating pipe 5 and the interface insulating material are separated by a left waterproof sleeve 7, and the left waterproof sleeve 7 and the interface elastic sleeve 2 are integrally formed. The left waterproof sleeve 7 comprises a left sealing sleeve 71 sleeved on the outer wall of the left pipe body 50 of the left heat preservation pipe 5, a left flange layer 72 integrally formed with the left sealing sleeve 71 is arranged at the left end of the left sealing sleeve 71, and the outermost side of the left flange layer 72 extends outwards to the interface elastic sleeve 2 and is integrally connected with the interface elastic sleeve 2; the right insulating layer 62 of the right insulating pipe 6 and the interface insulating material and the right outer protecting pipe 61 and the interface elastic sleeve 2 are separated by a right protecting sleeve 8, and the right protecting sleeve 8 and the interface elastic sleeve 2 are made of the same material. The right protection sleeve 8 comprises an inner sealing sleeve 81 and an outer sealing sleeve 82, wherein the inner sealing sleeve 81 is sleeved on the outer wall of the right pipe body 60 of the right insulation pipe 6, the outer sealing sleeve 82 is sleeved on the outer wall of the left end of the right outer protection pipe 61, the right end face of the inner sealing sleeve 81 is connected with the left end face of the outer sealing sleeve 82 in an integrated forming mode through a right flange layer 83, the right flange layer 83 is attached to the left end face of the right insulation layer 62 in a clinging mode, and the outer sealing sleeve 82 at the right end of. The right lacing device 4 is sleeved on the overlapping position of the interface elastic sleeve 2 and the right flange layer 82 to prevent the right flange layer 82 from moving when being stressed. When the heat-insulating pipeline interface protection heat-insulating structure is used in an actual field, only the left waterproof sleeve 7 or the right waterproof sleeve 8 is needed to be used for waterproof protection sometimes according to the field condition of the heat-insulating pipeline.
The installation and construction method of the heat preservation pipeline interface protection heat preservation structure comprises the following steps:
s1: and cleaning the port heat-insulating layer, the outer protective pipe surface layer and the outer walls of the socket and the socket base body at the joints of the left heat-insulating pipeline and the right heat-insulating pipeline so as to ensure that the surfaces are smooth and have no oil stains and impurities.
S2: on the left outer pillar 51 of the left insulating tube 5 of left port cover of interface protection elastic sleeve 2, will overlap the waterproof cover 7 in a left side with protection elastic sleeve 2 integrated into one piece simultaneously on left body 50 for the left flange layer 72 of left waterproof cover 7 closely laminates at the left insulating layer 52 terminal surface of left insulating tube 5, then turns over the periphery of its left end on the right-hand member of interface protection elastic sleeve 2.
S3: the inner sealing sleeve 81 of the right waterproof sleeve 8 is sleeved on the socket base body of the right insulating tube 6, and the outer sealing sleeve 82 of the right waterproof sleeve 8 is sleeved at the left end of the right outer protecting tube 61, so that the right flange 83 of the right waterproof sleeve 8 is tightly attached to the right insulating layer 62 of the right insulating tube 6.
S4: the socket of the left insulating pipe 5 is installed into the socket of the right insulating pipe 6, after the insulating pipeline is connected in place, the prefabricated insulating material 11 is wound on the outer wall of the left pipe body 50 at the interface of the insulating pipeline and the left sealing sleeve 71 of the left waterproof sleeve 7, and then the right end of the interface elastic sleeve 2 is turned downwards to the outer sealing sleeve 82 wrapped on the outer wall of the right outer protecting pipe 61.
S5: the left and right ends of the interface elastic sleeve 2 are fixed on the left and right outer protective tubes 51, 61 through the left and right tightening devices 3, 4 or the sealant respectively.
S6: and a material injection hole is formed in the interface elastic sleeve 2, and the air tightness of the sealing cavity wrapped by the interface elastic sleeve 2 is detected through the material injection hole.
S7: after the air tightness detection is carried out without problems, air outlets are formed in the interface elastic sleeve 2, and then the filling molding heat-insulating material 12 is injected into the cavity through the material injection holes until the filling molding heat-insulating material is filled in the cavity space, so that a combined body is formed by the filling molding heat-insulating material and the prefabricated molding heat-insulating material 11.
S8: and the material injection hole and the air outlet hole are blocked.
The protective and heat-insulating structure for the heat-insulating pipeline interface has the following using effects that: the water in the soil can be effectively prevented from permeating the heat insulation layers of the left and right heat insulation pipes 5 and 6 through the interface heat insulation material due to the damage of the interface elastic sleeve 2 through the left waterproof sleeve 7 and the right waterproof sleeve 8; meanwhile, water can be effectively prevented from permeating into the heat insulation layers of the left and right heat insulation pipes 5 and 6 due to water seepage of the interface matrix. The left waterproof sleeve 7 and the right waterproof sleeve 8 can effectively protect the heat-insulating layer of the heat-insulating pipe, and the service life of the heat-insulating layer of the heat-insulating pipe is prolonged.
In the third embodiment, as shown in fig. 4 and 5, the interface protection and thermal insulation structure of the thermal insulation pipeline is a thermal insulation pipeline processed by a pipe-in-pipe process, and the outer diameter of the thermal insulation layer positioned outside the socket base body is the same as that of the thermal insulation layer positioned on the horizontal pipe base body. Therefore, the difference between the interface protection and insulation structure of the insulation pipeline of the invention and the second embodiment is that the length of the middle part of the interface elastic sleeve 2 wrapping the insulation material 1 is lengthened, the length of the insulation material 1 is also lengthened, and the right port of the interface elastic sleeve 2 is sleeved on the right outer protective pipe 61 of the horizontal section of the right insulation pipe 6. In this embodiment, the longitudinal section of the middle part of the interface elastic sleeve 2 for wrapping the interface heat insulating material is rectangular, and two middle tightening devices 9 are symmetrically arranged at the left and right of the middle part of the interface elastic sleeve 2 to ensure that the interface elastic sleeve and the heat insulating material 1 are tightly wrapped together. The longitudinal section of the middle part of the interface elastic sleeve 2 used for wrapping the interface heat-insulating material can also be one of conical, elliptical, circular or other combined special-shaped structures.
The difference between the installation construction method of the heat preservation pipeline interface protection heat preservation structure and the second embodiment of the invention is the installation step of S3, which is as follows:
s3: the inner sealing sleeve 81 of the right waterproof sleeve 8 is sleeved on the right outer protecting pipe 61 of the horizontal section of the right heat-insulating pipe 6, and the outer sealing sleeve 82 of the right waterproof sleeve 8 is sleeved at the left end of the right outer protecting pipe 61, so that the right flange 83 of the waterproof sleeve 8 is tightly attached to the heat-insulating layer of the right heat-insulating pipe 6.
The heat-insulating pipeline interface protection and heat-insulating structure solves the problems of heat insulation and protection at the interface of the heat-insulating pipeline processed by a pipe-in-pipe process, effectively and completely isolates the interface of the heat-insulating pipeline from external soil through the interface elastic sleeve, and realizes the functions of effectively sealing and heat-insulating protection on the interface of the heat-insulating pipeline; the heat-insulating layer of the heat-insulating pipe can be effectively protected through the left waterproof sleeve and the right waterproof sleeve, and the service life of the heat-insulating layer of the heat-insulating pipe is prolonged; meanwhile, the installation is simple, and the problems that the installation is complex and the stability layer is easy to damage in the prior art are solved.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should be made within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (11)
1. The utility model provides a thermal insulation pipeline interface protection insulation construction which characterized in that: comprises an interface heat-insulating material and an interface elastic sleeve (2), the left end of the interface elastic sleeve (2) is sleeved on the surface of a left outer protective pipe (51) of a left heat-insulating pipe (5) at the interface of a heat-insulating pipeline, the inner diameter of the left port of the interface elastic sleeve (2) is less than or equal to the outer diameter of a left outer protective pipe (51) of the left heat preservation pipe (5), the right end of the interface elastic sleeve (2) is sleeved on the surface of a right outer protective pipe (61) of a right heat preservation pipe (6) at the interface of the heat preservation pipeline, the inner diameter of the right end port of the interface elastic sleeve (2) is less than or equal to the outer diameter of a right outer protective pipe (61) of the right heat preservation pipe (6), a closed cavity is formed between the right end face of the interface elastic sleeve (2) and the left heat-insulating pipe (5), the outer wall of the left pipe body (50) of the left heat-insulating pipe (5) and the left end face of the right heat-insulating pipe (6), and the interface heat-insulating material is filled in the closed cavity.
2. The insulated pipeline interface protection insulation construction of claim 1, characterized in that: the heat-insulating and heat-insulating integrated pipe is characterized by further comprising a left waterproof sleeve (7) and/or a right waterproof sleeve (8), wherein the left waterproof sleeve (7) is used for separating a left heat-insulating layer (52) of the left heat-insulating pipe (5) from the interface heat-insulating material, and the right protective sleeve (8) is used for separating a right heat-insulating layer (62) of the right heat-insulating pipe (6) from the interface heat-insulating material.
3. The insulated pipeline interface protection insulation construction of claim 2, characterized in that: the left waterproof sleeve (7) comprises a left sealing sleeve (71) sleeved on the outer wall of the left pipe body (50) of the left heat-insulating pipe (5), a left flange layer (72) integrally formed with the left sealing rubber sleeve (71) is arranged at the left end of the left sealing sleeve (71), and the outermost side of the left flange layer (72) extends outwards to the interface elastic sleeve (2) and is integrally connected with the interface elastic sleeve (2); right side lag (8) including cover inner gland cover (81) on right body (60) outer wall and cover outer oversleeve (82) on right outer pillar (61) left end outer wall, the right-hand member face of inner gland cover (81) through right flange layer (83) with the left end face integrated into one piece's of outer oversleeve (82) link together, right flange layer (83) are hugged closely on the left end face of right side heat preservation (62), the right-hand member parcel of interface elastic sleeve (2) is in the periphery of outer oversleeve (82).
4. The insulated pipeline interface protective insulation structure according to any one of claims 1 to 3, characterized in that: the interface heat-insulating material comprises a prefabricated heat-insulating material (11) wrapped on the outer wall of the left pipe body (50) of the left heat-insulating pipe (5) and a filling type heat-insulating material (12) filled on the outer side of the prefabricated heat-insulating material (11).
5. The insulated pipeline interface protection insulation construction of claim 4, characterized in that: the left end of the interface elastic sleeve (2) is fixed on a left outer protective pipe (51) of a left heat-insulating pipe (5) through a left tightening device (3) or sealant, and the right end of the interface elastic sleeve (2) is fixed on the surface of a right outer protective pipe (61) of a right heat-insulating pipe (5) through a right tightening device (4) or sealant.
6. The insulated pipeline interface protection insulation construction of claim 5, characterized in that: the inner walls of the left and right ports of the interface elastic sleeve (2) are respectively provided with a waterline (21) for enhancing the sealing effect.
7. The insulated pipeline interface protection and insulation structure of claim 3 or 5, wherein: the right end of the connector elastic sleeve (2) is sleeved on a right outer protective pipe (61) of the connector section of the right heat-insulating pipe (6).
8. The insulated pipeline interface protection and insulation structure of claim 3 or 5, wherein: the right end of the connector elastic sleeve (2) is sleeved on a right outer protective pipe (61) of the horizontal section of the right heat preservation pipe (6).
9. The insulated pipeline interface protective insulation structure of claim 8, wherein: the longitudinal section of the interface elastic sleeve (2) used for wrapping the middle part of the interface heat-insulating material is one of special-shaped structures of rectangle, cone, ellipse, circle or other combinations.
10. The insulated pipeline interface protective insulation structure of any one of claim 9, wherein: two middle tightening devices (9) are arranged in the middle of the interface elastic sleeve (2) in a bilateral symmetry manner.
11. A construction method for protecting an insulation structure by using the insulation pipeline joint according to any one of claims 5 to 9, characterized in that:
s1: and cleaning the port heat-insulating layer, the outer protective pipe surface layer and the outer walls of the socket and the socket base body at the joints of the left heat-insulating pipeline and the right heat-insulating pipeline so as to ensure that the surfaces are smooth and have no oil stains and impurities.
S2: the left end opening of the interface protection elastic sleeve (2) is sleeved on a left outer protective pipe (51) of the left heat preservation pipe (5), and meanwhile, a left waterproof sleeve (7) which is integrally formed with the protection elastic sleeve (2) is sleeved on the left pipe body (50), so that a left flange layer (72) of the left waterproof sleeve (7) is tightly attached to the end surface of the left heat preservation layer (52) of the left heat preservation pipe (5), and then the right end of the interface protection elastic sleeve (2) is upturned to the periphery of the left end of the interface protection elastic sleeve.
S3: an inner sealing sleeve (81) of the right waterproof sleeve (8) is sleeved on a socket base body of the right heat-insulating pipe (6), and an outer sealing sleeve (82) of the right waterproof sleeve (8) is sleeved at the left end of the right outer protecting pipe (61), so that a right flange layer 83 of the right waterproof sleeve (8) is tightly attached to a right heat-insulating layer (62) of the right heat-insulating pipe (6).
S4: the socket of a left insulating pipe (5) is installed into the socket of a right insulating pipe (6), after the insulating pipeline is connected in place, a prefabricated insulating material (11) is wound on the outer wall of a left pipe body (50) at the joint of the insulating pipeline and the left sealing sleeve (71) of a left waterproof sleeve (7), and then the right end of the joint elastic sleeve (2) is turned downwards to an outer sealing sleeve (82) wrapped on the outer wall of a right outer protecting pipe (61).
S5: the left end and the right end of the interface elastic sleeve (2) are respectively fixed on the left outer protective tube (51) and the right outer protective tube (61) through a left lacing device (3) and a right lacing device (4) or sealant.
S6: and a material injection hole is formed in the interface elastic sleeve (2), and the air tightness of the sealing cavity wrapped by the interface elastic sleeve (2) is detected through the material injection hole.
S7: after the air tightness detection is carried out without problems, air outlets are formed in the interface elastic sleeve (2), and then the filling molding heat-insulating material (12) is injected into the cavity through the material injection holes until the filling molding heat-insulating material is filled in the cavity space, so that a combined body is formed by the filling molding heat-insulating material and the prefabricated molding heat-insulating material (11).
S8: and the material injection hole and the air outlet hole are blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343022.8A CN112901910A (en) | 2021-03-30 | 2021-03-30 | Protective heat-insulating structure for heat-insulating pipeline joint and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343022.8A CN112901910A (en) | 2021-03-30 | 2021-03-30 | Protective heat-insulating structure for heat-insulating pipeline joint and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112901910A true CN112901910A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110343022.8A Pending CN112901910A (en) | 2021-03-30 | 2021-03-30 | Protective heat-insulating structure for heat-insulating pipeline joint and construction method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112901910A (en) |
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2021
- 2021-03-30 CN CN202110343022.8A patent/CN112901910A/en active Pending
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