CN111765327B - High temperature pipeline insulation structure - Google Patents

High temperature pipeline insulation structure Download PDF

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Publication number
CN111765327B
CN111765327B CN202010614276.4A CN202010614276A CN111765327B CN 111765327 B CN111765327 B CN 111765327B CN 202010614276 A CN202010614276 A CN 202010614276A CN 111765327 B CN111765327 B CN 111765327B
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China
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pipeline
shell
heat
plate
high temperature
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CN111765327A (en
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张声远
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China Aviation Planning and Design Institute Group Co Ltd
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China Aviation Planning and Design Institute Group Co Ltd
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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
    • 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
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • 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
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)

Abstract

The invention discloses a high-temperature pipeline heat-insulating structure which comprises a first pipeline, a second pipeline and a connecting piece, wherein the cross sections of the first pipeline and the second pipeline are round defects; the second pipeline comprises a second protective shell, a pipeline body and a first heat-insulating layer filled between the second protective shell and the pipeline body, and the second protective shell comprises a second arc shell and a second chord shell; the outer side surfaces of the first arc part shell and the second arc part shell and the positions close to the end parts are symmetrically provided with first connecting lug plates. The high-temperature pipeline heat-insulation structure provided by the invention is simple in design, ingenious in structure, stable in structure after assembly, suitable for multi-pipeline heat-insulation construction and convenient to operate. The problem that the space between a plurality of high-temperature pipelines is large and the space for expansion of the reserved pipeline is large at the present stage is well solved.

Description

High temperature pipeline insulation structure
Technical Field
The invention relates to the field of high-temperature pipeline construction, in particular to a high-temperature pipeline heat-insulating structure.
Background
The high-temperature pipelines of the power plant are more, and the pipelines need to be arranged in a closer parallel or crossed mode due to the restriction of field space. The existing pipeline heat preservation method only preserves heat for a single pipeline. When a plurality of pipelines are arranged relatively close to each other, the pipelines need to be insulated jointly, namely, the first insulating layer is wound or wrapped on the plurality of pipelines at the same time in a cold state.
The problems existing in the existing stage of heat preservation construction are as follows: when the high-temperature pipeline operates, the expansion amount and the expansion direction of a plurality of pipelines can be inconsistent, and the existing pipeline heat-insulating material does not have the capability of absorbing expansion, so that the first heat-insulating layer is pulled to be cracked, and the heat-insulating effect is influenced.
Disclosure of Invention
The invention aims to provide a high-temperature pipeline heat-insulating structure and aims to solve the technical problems of large expansion space, large occupied area, high plant cost, low plant utilization rate and the like in the operation of a high-temperature pipeline at the present stage.
In order to achieve the purpose, the invention adopts the following technical scheme: the invention provides a high-temperature pipeline heat-insulating structure which comprises a first pipeline, a second pipeline and a connecting piece, wherein the cross sections of the first pipeline and the second pipeline are round defects;
the second pipeline comprises a second protective shell, a pipeline body and a first heat-insulating layer filled between the second protective shell and the pipeline body, and the second protective shell comprises a second arc shell and a second chord shell;
the outer side surfaces of the first arc part shell and the second arc part shell and the positions close to the end parts are symmetrically provided with first connecting lug plates,
the cross section of the connecting piece is I-shaped, the outer side surfaces of an upper transverse plate and a lower transverse plate of the I-shaped connecting piece are respectively and symmetrically provided with a second connecting lug plate, and a second heat-insulating layer is arranged in the connecting piece;
the first chord part shell is clamped and arranged on the left side face of the vertical plate of the I-shaped connecting piece, the second chord part shell is clamped and arranged on the right side face of the vertical plate of the I-shaped connecting piece, and the first connecting ear plate and the second connecting ear plate are fixedly connected through bolts.
Further, the length of the first chord part shell is smaller than the diameter of the circle; the length of the first chord part shell is equal to the length of the second chord part shell.
Furthermore, the first protective shell is made of galvanized steel plates or stainless steel plates.
Further, the thickness of the first protective shell is 0.5-0.7 mm.
Furthermore, the upper transverse plate and the lower transverse plate are both made of flexible materials.
Further, the upper cross plate and the lower cross plate have the same thickness; the thickness of the upper cross plate is 0.5-0.7 mm.
Furthermore, the first heat preservation layer adopts an expanded perlite product or a calcium silicate product or an aluminum silicate cotton product.
Furthermore, the second insulating layer adopts an expanded perlite product or a calcium silicate product or an aluminum silicate cotton product.
During the process, the reticular fiber product is mixed with the common heat insulation material, the fiber product is fixed with the second connecting ear plate through the pin, so as to ensure the heat insulation material to be evenly distributed during the thermal expansion,
further, the length of the first conduit does not exceed 12 m.
Further, the length of the first conduit and the length of the second conduit are equal.
Further, the cross-sectional widths of the first and second conduits and the connector in a cooled state are: 50-5000 mm.
The invention has the beneficial effects that:
the high-temperature pipeline heat-insulation structure provided by the invention is simple in design, ingenious in structure, stable in structure after assembly, suitable for multi-pipeline heat-insulation construction and convenient to operate.
2, the high-temperature pipeline heat-insulating structure provided by the invention well solves the problems that a plurality of high-temperature pipelines at the current stage are large in space, and the reserved pipeline expansion space is large in order to ensure that the high-temperature pipelines have respective heat-insulating spaces, so that the utilization efficiency of a plant is better improved, the design difficulty of the plant is reduced, and the manufacturing cost of the plant is reduced.
3, the high-temperature pipeline heat-insulating structure provided by the invention well meets the requirement of common heat insulation of multiple pipelines, saves space and ensures that the expansion of the pipelines is not influenced in a high-temperature state.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the thermal insulation structure of the present invention.
Fig. 2 is a schematic view of the connector structure.
FIG. 3 is a schematic diagram of the cold state of the pipeline for separation tendency.
FIG. 4 is a schematic view of the pipeline operating conditions for a separation trend.
FIG. 5 is a schematic diagram of a pipeline cold state following a trend.
FIG. 6 is a schematic view of the pipeline operating conditions following a trend.
Reference numerals: 1-a first pipeline, 11-a first arc part shell, 12-a first chord part shell, 13-a first connecting lug plate,
2-a second pipeline, 21-a second arc part shell, 22-a second chord part shell,
3-connecting piece, 31-second connecting lug plate, 32-second insulating layer,
4-the pipeline body, 5-the first heat preservation layer.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and illustrating the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
Examples
As shown in fig. 1, the present invention provides a high temperature pipeline thermal insulation structure, where the thermal insulation structure includes a first pipeline 1, a second pipeline 2 and a connecting piece 3, the cross sections of the first pipeline 1 and the second pipeline 2 are both circular defects, the first pipeline 1 includes a first protective shell, a pipeline body 4 and a first thermal insulation layer 5 filled between the protective shell and the pipeline body 4, and the first protective shell includes a first arc shell 11 and a first chord shell 12;
the second pipeline 2 comprises a second protective outer shell, a pipeline body 4 and a first heat-insulating layer 5 filled between the protective outer shell and the pipeline body 4, wherein the second protective outer shell comprises a second arc shell 21 and a second chord shell 22; the first heat preservation layer 5 adopts an expanded perlite product or a calcium silicate product or an aluminum silicate cotton product.
The outer side surfaces and the positions close to the end parts of the first arc part shell 11 and the second arc part shell 21 are symmetrically provided with first connecting lug plates 13.
As shown in fig. 2, the cross section of the connecting member 3 is i-shaped, the outer side surfaces of the upper transverse plate and the lower transverse plate of the i-shaped connecting member 3 are respectively and symmetrically provided with a second connecting ear plate 31, and a second insulating layer 32 is arranged in the connecting member 3; the second insulating layer 32 adopts an expanded perlite product or a calcium silicate product or an aluminum silicate cotton product. During the process, the reticular fiber product is mixed with the common heat insulation material, and the fiber product is fixed with the second connecting lug plate 31 through the pin, so that the heat insulation material is uniformly distributed during thermal expansion.
The connecting piece 3 belongs to a flexible heat-insulation expansion joint, and the second heat-insulation layer 32 can adjust the expansion amount along with the thermal expansion of the pipeline so as to ensure that the surface temperature of the connecting piece 3 meets the specification requirement. The second insulating layer 32 adopts a net structure to insulate and separate the expansion joints, so that the expansion joints are not accumulated in one direction due to the expansion and contraction of the connecting pieces 3.
The first chord part shell 12 is clamped and arranged on the left side face of a vertical plate of the I-shaped connecting piece 3, the second chord part shell 22 is clamped and arranged on the right side face of the vertical plate of the I-shaped connecting piece 3, and the first connecting ear plate 13 and the second connecting ear plate 31 are fixedly connected through bolts. The upper transverse plate and the lower transverse plate are the same in thickness and made of flexible materials with the thickness of 0.5-0.7 mm.
Wherein the length of the first chord shell 12 is less than the diameter of a circle; the length of the first chord shell 12 is equal to the length of the second chord shell 22. The first protective shell is made of galvanized steel plate or stainless steel plate with the thickness of 0.5-0.7 mm.
Wherein the length of the first pipeline 1 is not more than 12m, and the length of the first pipeline is equal to that of the second pipeline. The heat preservation equipment can be processed in sections and connected to the site in another section. The cross-sectional width of the first conduit 1, the second conduit 2 and the connection 3 in the cooled state is: 50-5000 mm.
As shown in figures 3-6, if the trend between the pipelines in the running state is separated from the pipelines in the cold state, the expansion joint is arranged according to the form shown in figure 3, namely, the hard pipelines are installed in a tight fit manner during cold installation, and the expansion joint is insulated outside the hard insulation and connected with the hard shell through a flange, so that the disassembly is convenient. If the trend between the pipelines in the running state is close to that in the cold state, the expansion joints can be arranged according to the form shown in figure 5, and the second insulating layer 32 with better elasticity can be filled between the hard pipelines.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.

Claims (10)

1. High temperature pipeline insulation construction, its characterized in that: the heat insulation structure comprises a first pipeline (1), a second pipeline (2) and a connecting piece (3), the cross sections of the first pipeline (1) and the second pipeline (2) are circular defects, the first pipeline (1) comprises a first protection shell, a pipeline body (4) and a first heat insulation layer (5) filled between the first protection shell and the pipeline body (4), and the first protection shell comprises a first arc shell (11) and a first chord shell (12);
the second pipeline (2) comprises a second protective shell, a pipeline body (4) and a first heat-insulating layer (5) filled between the second protective shell and the pipeline body (4), and the second protective shell comprises a second arc shell (21) and a second chord shell (22);
the outer side surfaces and the positions close to the end parts of the first arc part shell (11) and the second arc part shell (21) are symmetrically provided with first connecting lug plates (13),
the section of the connecting piece (3) is I-shaped, the outer side surfaces of an upper transverse plate and a lower transverse plate of the I-shaped connecting piece (3) are respectively and symmetrically provided with a second connecting lug plate (31), and a second heat-insulating layer (32) is arranged in the connecting piece (3);
the first chord part shell (12) is clamped and arranged on the left side face of a vertical plate of the I-shaped connecting piece (3), the second chord part shell (22) is clamped and arranged on the right side face of the vertical plate of the I-shaped connecting piece (3), and the first connecting lug plate (13) and the second connecting lug plate (31) are fixedly connected through bolts.
2. A high temperature pipe insulation as claimed in claim 1, wherein the first chordal shell (12) has a length less than the diameter of a circle; the length of the first chord part shell (12) is equal to the length of the second chord part shell (22).
3. A high temperature pipe insulation as claimed in claim 1, wherein the first protective enclosure is made of galvanized steel or stainless steel.
4. A high temperature pipe insulation as claimed in claim 1, wherein the first protective shell has a thickness of 0.5-0.7 mm.
5. The high-temperature pipeline thermal insulation structure of claim 1, wherein the upper transverse plate and the lower transverse plate are both made of flexible materials.
6. The high temperature duct insulation structure of claim 1, wherein the upper cross plate and the lower cross plate have the same thickness; the thickness of the upper cross plate is 0.5-0.7 mm.
7. A high-temperature pipe insulation structure as claimed in claim 1, wherein the first insulation layer (5) is made of expanded perlite, calcium silicate or aluminum silicate cotton.
8. A high temperature pipe insulation structure as recited in claim 1, wherein the second insulation layer (32) is made of expanded perlite, calcium silicate, or aluminum silicate cotton.
9. A high temperature pipe insulation as claimed in claim 1, wherein the length of the first pipe (1) does not exceed 12 m.
10. A high-temperature pipe insulation structure as claimed in claim 1, wherein the cross-sectional width of the first pipe (1), the second pipe (2) and the connector (3) in a cooled state is: 50-5000 mm.
CN202010614276.4A 2020-06-30 2020-06-30 High temperature pipeline insulation structure Active CN111765327B (en)

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Application Number Priority Date Filing Date Title
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CN111765327B true CN111765327B (en) 2021-08-24

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2017383A1 (en) * 1968-09-04 1970-05-22 Kabel Metallwerke Ghh
JP2009192002A (en) * 2008-02-15 2009-08-27 Toyota Auto Body Co Ltd Clamp for binding object
CN203240101U (en) * 2013-05-07 2013-10-16 北汽福田汽车股份有限公司 Pipeline fixing device and vehicle
CN103851259A (en) * 2012-12-06 2014-06-11 北汽福田汽车股份有限公司 Pipe clamp device
CN104676125A (en) * 2013-11-29 2015-06-03 无锡市同创玻璃钢船艇厂 Suspending device for pipeline of ship
CN109027526A (en) * 2018-09-13 2018-12-18 山东艾菲尔管业有限公司 Central heating prefabricated thermal insulation plastic conduit
CN109922894A (en) * 2016-10-27 2019-06-21 富世华股份有限公司 Adapter for liquid dispensing system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2017383A1 (en) * 1968-09-04 1970-05-22 Kabel Metallwerke Ghh
JP2009192002A (en) * 2008-02-15 2009-08-27 Toyota Auto Body Co Ltd Clamp for binding object
CN103851259A (en) * 2012-12-06 2014-06-11 北汽福田汽车股份有限公司 Pipe clamp device
CN203240101U (en) * 2013-05-07 2013-10-16 北汽福田汽车股份有限公司 Pipeline fixing device and vehicle
CN104676125A (en) * 2013-11-29 2015-06-03 无锡市同创玻璃钢船艇厂 Suspending device for pipeline of ship
CN109922894A (en) * 2016-10-27 2019-06-21 富世华股份有限公司 Adapter for liquid dispensing system
CN109027526A (en) * 2018-09-13 2018-12-18 山东艾菲尔管业有限公司 Central heating prefabricated thermal insulation plastic conduit

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