CN115574196B - Heat preservation structure and heat preservation coating process of steam heat preservation pipe - Google Patents
Heat preservation structure and heat preservation coating process of steam heat preservation pipe Download PDFInfo
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- CN115574196B CN115574196B CN202211190936.6A CN202211190936A CN115574196B CN 115574196 B CN115574196 B CN 115574196B CN 202211190936 A CN202211190936 A CN 202211190936A CN 115574196 B CN115574196 B CN 115574196B
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- heat
- cotton
- insulating cotton
- insulating
- closing section
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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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- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a steam inner pipe, which is coated with a heat-insulating cotton layer; the heat-insulating cotton layer comprises cylindrical inner heat-insulating cotton and outer heat-insulating cotton; the heat-insulating cotton skeleton is coaxial with the steam inner pipe, the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton are formed by bending/bending a piece of complete rectangular heat-insulating cotton, after the rectangular heat-insulating cotton is bent/bent into the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton, the heat-insulating cotton skeleton is sandwiched between the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton, and the heat-insulating cotton skeleton divides the space between the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton into a plurality of independent heat-insulating empty bins; a piece of heat preservation cotton is bent into a double-layer hollow structure, the problem that the heat conduction area between solids is enlarged is solved on the basis of tightly wrapping the heat preservation cotton, and the heat preservation effect of locking heat is achieved.
Description
Technical Field
The invention belongs to the field of heat preservation pipes.
Background
The heat-insulating cotton outside the steam inner pipe is generally coated by adopting a plurality of layers of heat-insulating cotton, so that the heat-insulating effect is achieved;
if the two adjacent soundproof cotton layers are covered by the loose insulating cotton, gaps exist between the two adjacent insulating cotton layers, so that the problem that heat is lost through the gaps is caused;
if the two adjacent soundproof cotton covers are too tight, the contact surface between the two adjacent insulating cotton layers is large due to the too tight adhesion, so that the heat conduction rate between the two insulating cotton layers is enhanced, and heat dissipation is also easily caused.
The steam inner tube has a large temperature difference in working and non-working states, and due to the problem of thermal expansion and cold contraction, the relaxation and the compact intermediate form between two adjacent soundproof cotton are difficult to have sustainability in a conventional cladding mode.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides the heat preservation structure and the heat preservation coating process of the steam heat preservation pipe, wherein a piece of heat preservation cotton is bent into a double-layer hollow structure, the problem that the heat conduction area between solids is enlarged is solved on the basis of tightly coating the heat preservation cotton, and the heat preservation effect of locking heat is achieved.
The technical scheme is as follows: in order to achieve the purpose, the heat-insulating structure of the steam heat-insulating pipe comprises a steam inner pipe, wherein a heat-insulating cotton layer is coated outside the steam inner pipe; the heat-insulating cotton layer comprises cylindrical inner-layer heat-insulating cotton and outer-layer heat-insulating cotton;
the heat-insulating cotton skeleton is characterized by further comprising a heat-insulating cotton skeleton coaxial with the steam inner pipe, wherein the inner heat-insulating cotton and the outer heat-insulating cotton are formed by bending/bending a piece of complete rectangular heat-insulating cotton, and after the rectangular heat-insulating cotton is bent/bent into the inner heat-insulating cotton and the outer heat-insulating cotton, the heat-insulating cotton skeleton is sandwiched between the inner heat-insulating cotton and the outer heat-insulating cotton, and the heat-insulating cotton skeleton divides the space between the inner heat-insulating cotton and the outer heat-insulating cotton into a plurality of independent heat-insulating empty bins.
Further, the inner-layer heat-insulating cotton comprises a layer of cylindrical inner-ring heat-insulating cotton with an open-loop lower end tightly wrapped outside the steam inner pipe, and the anticlockwise end and the clockwise end of the open-loop inner-ring heat-insulating cotton are respectively bent downwards to form a first heat-insulating cotton closing section and a second heat-insulating cotton closing section; the steam pipe further comprises a first holding strip and a second holding strip which are parallel to the axis of the steam pipe; the first holding strip and the second holding strip are clamped on two sides of the first heat-preserving cotton closing section and two sides of the second heat-preserving cotton closing section in parallel, so that the first heat-preserving cotton closing section and the second heat-preserving cotton closing section are tightly extruded, the first heat-preserving cotton closing section and the second heat-preserving cotton closing section which are mutually extruded enable the inner ring heat-preserving cotton of the open loop to be closed loop, and the inner ring heat-preserving cotton has an inward shrinkage trend.
Further, the heat preservation cotton skeleton includes a plurality of coaxial equidistant ring-shaped dividing pieces that distribute, and the lower extreme of ring-shaped dividing piece is provided with the opening, and the inner circle of each ring-shaped dividing piece is all coaxial heart cover outside the inner circle heat preservation cotton, and anticlockwise end and clockwise of each ring-shaped dividing piece are welded connection respectively first holding strip and second holding strip.
Further, the outer layer heat-insulating cotton consists of left semicircular arc heat-insulating cotton and right semicircular arc heat-insulating cotton which are coaxial; the inner walls of the left semicircular arc heat-insulating cotton and the right semicircular arc heat-insulating cotton are attached to the outline of the outer ring of each circular dividing piece, and an independent heat-insulating empty bin is formed between any two adjacent circular dividing pieces;
the left semicircular arc heat preservation cotton is connected with the lower end of the first heat preservation cotton closing section into a whole, and the right semicircular arc heat preservation cotton is connected with the lower end of the second heat preservation cotton closing section into a whole;
the clockwise end of the left semicircular arc heat preservation cotton and the anticlockwise end of the right semicircular arc heat preservation cotton are respectively bent upwards integrally to form a third heat preservation cotton closing section and a fourth heat preservation cotton closing section.
The steam pipe further comprises a third holding strip and a fourth holding strip which are parallel to the axis of the steam pipe; the third holding strip and the fourth holding strip are clamped on two sides of the third heat-insulating cotton closing section and two sides of the fourth heat-insulating cotton closing section in parallel, so that the third heat-insulating cotton closing section and the fourth heat-insulating cotton closing section are tightly extruded, the third heat-insulating cotton closing section and the fourth heat-insulating cotton closing section which are mutually extruded and the first heat-insulating cotton closing section and the second heat-insulating cotton closing section which are mutually extruded enable the left semicircular arc heat-insulating cotton and the right semicircular arc heat-insulating cotton to be spliced into a closed loop cylindrical structure, and the closed loop cylindrical structure has a trend of inwards shrinking.
Further, the left semicircular arc heat preservation cotton, the right semicircular arc heat preservation cotton, the first heat preservation cotton closing section, the second heat preservation cotton closing section, the inner ring heat preservation cotton, the third heat preservation cotton closing section and the fourth heat preservation cotton closing section are formed by bending/bending rectangular heat preservation cotton.
Further, the heat preservation cotton coating process of the heat preservation structure of the steam heat preservation pipe is characterized in that:
step one, clamping and fixing a steam inner pipe in a horizontal posture;
step two, the middle part of the rectangular heat-insulating cotton is tangent with the top of the steam inner pipe;
step three, enabling the first holding strip and the second holding strip to contact the upper surface of the middle part of the rectangular heat-insulating cotton;
step four, the first holding strip and the second holding strip respectively move anticlockwise and clockwise along the outline path of the steam inner tube, so that the middle part of the rectangular heat-insulating cotton is gradually attached to the outer wall of the steam inner tube in an arc shape under the motion constraint of the first holding strip and the second holding strip, and the inner ring heat-insulating cotton is gradually formed; the part of the two sides of the heat-insulating cotton which is not bent/folded is marked as a left wing and a right wing;
when a complete inner ring heat-insulating cotton is formed, a first heat-insulating cotton closing section and a second heat-insulating cotton closing section which are formed by the anticlockwise end and the clockwise end of the inner ring heat-insulating cotton and are bent downwards are clamped between a first clamping strip and a second clamping strip;
fifthly, enabling the whole heat-insulating cotton framework formed by the first clamping strip, the second clamping strip and each annular dividing piece to coaxially cover the heat-insulating cotton of the formed inner ring;
the third holding strip and the fourth holding strip are respectively contacted with the lower side surface of the right end of the left wing and the lower side surface of the left end of the right wing in parallel;
step six, the third holding strip and the fourth holding strip respectively displace clockwise and anticlockwise along the contour path of the heat-insulating cotton framework, the left wing and the right wing are gradually and gradually attached to the periphery of the heat-insulating cotton framework in an arc shape under the arc motion constraint of the third holding strip and the fourth holding strip, and the left wing and the right wing are gradually formed into left semicircular arc-shaped heat-insulating cotton and right semicircular arc-shaped heat-insulating cotton;
when the complete left semicircular arc heat preservation cotton and the right semicircular arc heat preservation cotton are formed, a third heat preservation cotton closing section and a fourth heat preservation cotton closing section which are formed by the clockwise end of the left semicircular arc heat preservation cotton and the anticlockwise end of the right semicircular arc heat preservation cotton and are bent upwards are clamped between the third clamping strip and the fourth clamping strip.
Further, the left heat-insulating cotton clamping device and the right heat-insulating cotton clamping device are included, and can clamp the left outline edge and the right outline edge of rectangular heat-insulating cotton respectively; the driving device can respectively drive the left heat-preservation cotton clamping device and the right heat-preservation cotton clamping device to do arbitrary X Y direction displacement.
Further, the heat preservation cotton coating process device of the steam heat preservation pipe further comprises a left holding strip clamping device and a right holding strip clamping device, wherein the driving device can respectively drive the left holding strip clamping device and the right holding strip clamping device to do random XY direction displacement, and the left holding strip clamping device and the right holding strip clamping device respectively clamp the first holding strip and the second holding strip; enabling the first clamping strip c and the second clamping strip to respectively follow the left clamping strip clamping device and the right clamping strip clamping device to synchronously displace; after the left holding strip clamping device and the right holding strip clamping device release the first holding strip and the second holding strip, the third holding strip and the fourth holding strip can be clamped respectively.
The beneficial effects are that: the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton are formed by bending/bending a whole rectangular heat-insulating cotton, and the continuous structure formed by bending/bending ensures that the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton both have inward shrinkage tendency, so that a compact coating effect is achieved, and meanwhile, a plurality of independent cavities are formed between the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton, so that heat conduction between solids is effectively isolated, and further, the heat insulation function of locking heat is realized on the basis of compact coating of the heat-insulating cotton; in the process aspect, a mode of displacing the circular arc paths of the first holding strip, the second holding strip and the third holding strip is adopted to bend/bend rectangular heat-insulating cotton into continuous left semicircular arc heat-insulating cotton, right semicircular arc heat-insulating cotton, a first heat-insulating cotton closing section, a second heat-insulating cotton closing section, an inner ring heat-insulating cotton, a third heat-insulating cotton closing section and a fourth heat-insulating cotton closing section.
Drawings
FIG. 1 is a schematic diagram of the whole structure of a steam insulating pipe;
FIG. 2 is a schematic structural view of the steam insulating pipe with the outer pipe removed;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic diagram of a left clip strip clamping device and a right clip strip clamping device clamping a first clip strip and a second clip strip, respectively;
FIG. 5 is a schematic view of a plurality of annular segments, a first clip strip, and a second clip strip separated;
FIG. 6 is a schematic diagram of a plurality of annular dividing pieces, a first clamping strip and a second clamping strip integrally welded into a heat-insulating cotton skeleton;
FIG. 7 is a schematic diagram at the end of "step three";
FIG. 8 and FIG. 9 are schematic diagrams of the rectangular heat insulation cotton, wherein the first holding strip and the second holding strip in the fourth step are respectively displaced anticlockwise and clockwise along the contour path of the steam inner tube, so that the middle part of the rectangular heat insulation cotton is gradually attached to the outer wall of the steam inner tube in an arc shape under the motion constraint of the first holding strip and the second holding strip, and the inner ring heat insulation cotton is gradually formed;
FIG. 10 is a schematic diagram at the end of "step four";
FIG. 11 is a schematic diagram at the end of "step five";
FIG. 12 is a schematic view of the left wing and the right wing gradually forming left semi-circular arc insulation cotton and right semi-circular arc insulation cotton in the step six;
FIG. 13 is a schematic perspective view of FIG. 12;
schematic at the end of "step six" of fig. 14.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 14, the heat insulation structure of the steam heat insulation pipe comprises a steam inner pipe 11, wherein a heat insulation cotton layer is coated outside the steam inner pipe 11; the heat-insulating cotton layer comprises cylindrical inner heat-insulating cotton and outer heat-insulating cotton; if the insulating cotton layer of figure 1 is sleeved with an outer tube 9 coaxially, the end part of the outer tube 9 is fixed with the outer wall of one end of the steam inner tube 11 through a plurality of welding brackets 2, the scheme mainly introduces a coating structure and a process of the insulating cotton, and is as follows:
as shown in fig. 6, the steam heat insulation device further comprises a heat insulation cotton skeleton 31 coaxial with the steam inner pipe 11, wherein the inner heat insulation cotton and the outer heat insulation cotton are formed by bending/bending a complete rectangular heat insulation cotton 1, after the rectangular heat insulation cotton 1 is bent/bent into the inner heat insulation cotton and the outer heat insulation cotton, the heat insulation cotton skeleton 31 is sandwiched between the inner heat insulation cotton and the outer heat insulation cotton, and the heat insulation cotton skeleton divides the space between the inner heat insulation cotton and the outer heat insulation cotton into a plurality of independent heat insulation empty bins 13 as shown in fig. 3; the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton are formed by bending/bending a complete rectangular heat-insulating cotton, and the continuous structure formed by bending/bending in the follow-up concrete structure enables the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton to have inward shrinkage tendency, so that a compact coating effect is achieved, meanwhile, a plurality of independent cavities are formed between the inner-layer heat-insulating cotton and the outer-layer heat-insulating cotton, heat conduction between solids is effectively isolated, and further, the heat insulation effect of locking heat is achieved on the basis of compact coating of the heat-insulating cotton;
as shown in fig. 1, the inner-layer heat-insulating cotton comprises a layer of cylindrical inner-ring heat-insulating cotton 1.1 with an open-loop lower end tightly covered outside a steam inner pipe 11, and a counterclockwise end and a clockwise end of the open-loop inner-ring heat-insulating cotton 1.1 are respectively bent downwards integrally to form a first heat-insulating cotton closing section 1.2 and a second heat-insulating cotton closing section 1.3; further comprising a first grip strip 8c and a second grip strip 8d parallel to the axis of the steam inner tube 11; the first clamping strip 8c and the second clamping strip 8d are clamped at two sides of the first heat-preserving cotton closing section 1.2 and the second heat-preserving cotton closing section 1.3 in parallel, so that the first heat-preserving cotton closing section 1.2 and the second heat-preserving cotton closing section 1.3 are tightly extruded, the first heat-preserving cotton closing section 1.2 and the second heat-preserving cotton closing section 1.3 extruded mutually enable the open-loop inner ring heat-preserving cotton 1.1 to be changed into a closed loop and have a trend of inwards shrinking, and the inner ring heat-preserving cotton 1.1 is tightly attached to the outer wall of the steam inner pipe 11;
as shown in fig. 5 and 6, the insulation cotton skeleton 31 comprises a plurality of circular ring-shaped dividing pieces 10 with equal intervals distributed on the same axis, an opening 20 is arranged at the lower end of each circular ring-shaped dividing piece 10, the inner ring of each circular ring-shaped dividing piece 10 is coaxially sleeved outside the inner ring insulation cotton 1.1, and the anticlockwise end and the clockwise end of each circular ring-shaped dividing piece 10 are respectively welded and connected with a first holding strip 8c and a second holding strip 8d;
the outer layer heat preservation cotton consists of left semicircular arc heat preservation cotton 1.4 and right semicircular arc heat preservation cotton 1.5 which are coaxial; the inner walls of the left semicircular arc heat-insulating cotton 1.4 and the right semicircular arc heat-insulating cotton 1.5 are attached to the outer ring outline 10.1 of each circular dividing piece 10, and independent heat-insulating empty bins 13 are formed between any two adjacent circular dividing pieces 10, so that heat conduction between solids is effectively isolated, and further the heat-insulating effect of locking heat is achieved;
the anticlockwise end of the left semicircular arc heat preservation cotton 1.4 is connected with the lower end of the first heat preservation cotton closing section 1.2 into a whole, and the clockwise end of the right semicircular arc heat preservation cotton 1.5 is connected with the lower end of the second heat preservation cotton closing section 1.3 into a whole;
the clockwise end of the left semicircular arc heat preservation cotton 1.4 and the anticlockwise end of the right semicircular arc heat preservation cotton 1.5 are respectively bent upwards integrally to form a third heat preservation cotton closing section 1.6 and a fourth heat preservation cotton closing section 1.4; further comprising a third grip strip 8a and a fourth grip strip 8b parallel to the axis of the steam inner tube 11; the third clamping strip 8a and the fourth clamping strip 8b are clamped at two sides of the third heat-insulating cotton closing section 1.6 and the fourth heat-insulating cotton closing section 1.4 in parallel, so that the third heat-insulating cotton closing section 1.6 and the fourth heat-insulating cotton closing section 1.4 are tightly extruded, the third heat-insulating cotton closing section 1.6 and the fourth heat-insulating cotton closing section 1.4 which are mutually extruded, the first heat-insulating cotton closing section 1.2 and the second heat-insulating cotton closing section 1.3 which are mutually extruded enable the left semicircular arc heat-insulating cotton 1.4 and the right semicircular arc heat-insulating cotton 1.5 to be spliced into a closed loop cylindrical structure, and the closed loop cylindrical structure has a trend of inward shrinkage, so that the heat-insulating cotton framework 31 is tightly held tightly;
the left semicircular arc heat-insulating cotton 1.4, the right semicircular arc heat-insulating cotton 1.5, the first heat-insulating cotton closing section 1.2, the second heat-insulating cotton closing section 1.3, the inner ring heat-insulating cotton 1.1, the third heat-insulating cotton closing section 1.6 and the fourth heat-insulating cotton closing section 1.4 are formed by bending/bending rectangular heat-insulating cotton 1.
As shown in fig. 2 and 4, bolt through holes 41 are formed in the third holding strip 8a and the fourth holding strip 8b in an array along the length direction, and the bolt through holes 41 on the third holding strip 8a and the bolt through holes 41 on the fourth holding strip 8b correspond to each other coaxially one by one; the locking bolts 6 penetrate through bolt penetrating holes 41 on the third clamping strip 8a and the fourth clamping strip 8b, and penetrate through a third thermal insulation cotton closing section 1.6 and a fourth thermal insulation cotton closing section 1.4 between the third clamping strip 8a and the fourth clamping strip 8b; the end of the locking bolt 6 close to the tip 5 is locked by the nut 7, so that the third clamping strip 8a and the fourth clamping strip 8b tightly squeeze the third heat-insulation cotton closing section 1.6 and the fourth heat-insulation cotton closing section 1.4.
The device comprises: the vertical direction is referred to as the Y direction and the horizontal direction is referred to as the X direction in the axial view of the steam inner pipe 11;
the left heat-insulating cotton clamping device 3 and the right heat-insulating cotton clamping device 4 are further included, and the left heat-insulating cotton clamping device 3 and the right heat-insulating cotton clamping device 4 can clamp the left outline edge and the right outline edge of the rectangular heat-insulating cotton 1 respectively; the driving device can drive the left heat-preservation cotton clamping device 3 and the right heat-preservation cotton clamping device 4 to do arbitrary X Y direction displacement respectively;
as shown in fig. 4, the clamping device further comprises a left clamping strip clamping device 43 and a right clamping strip clamping device 44, the driving device can respectively drive the left clamping strip clamping device 43 and the right clamping strip clamping device 44 to move in any X Y direction, and the left clamping strip clamping device 43 and the right clamping strip clamping device 44 respectively clamp the first clamping strip 8c and the second clamping strip 8d; causing the first clip strip 8c and the second clip strip 8d to follow the left clip strip clamping device 43 and the right clip strip clamping device 44 respectively to displace synchronously; after the left holding device 43 and the right holding device 44 release the first holding strip 8c and the second holding strip 8d, they can also hold the third holding strip 8a and the fourth holding strip 8b, respectively; the driving device capable of performing XY displacement is of an existing structure, and therefore will not be described in detail.
The process comprises the following steps:
step one, clamping and fixing the steam inner pipe 11 in a horizontal posture;
step two, preparing a piece of rectangular heat-insulating cotton 1 in a complete horizontal posture, and enabling a left heat-insulating cotton clamping device 3 and a right heat-insulating cotton clamping device 4 to clamp the left outline edge and the right outline edge of the rectangular heat-insulating cotton 1 respectively so as to enable the rectangular heat-insulating cotton 1 to be in a horizontal state; the middle part of the rectangular heat preservation cotton 1 is tangent to the top of the steam inner pipe 11 by controlling the displacement of the left heat preservation cotton clamping device 3 and the right heat preservation cotton clamping device 4;
step three, the left holding device 43 and the right holding device 44 hold the first holding strip 8c and the second holding strip 8d parallel to each other, respectively, and make the first holding strip 8c and the second holding strip 8d contact the upper surface of the middle part of the rectangular insulation cotton 1, as shown in fig. 7;
step four, the driving device drives the left holding strip clamping device 43 and the right holding strip clamping device 44 to displace respectively, so as to drive the first holding strip 8c and the second holding strip 8d clamped by the left holding strip clamping device 43 and the right holding strip clamping device 44 to displace anticlockwise and clockwise respectively along the contour path of the steam inner tube 11, so that the middle part of the rectangular heat-insulating cotton 1 is gradually attached to the outer wall of the steam inner tube 11 in an arc shape under the motion constraint of the first holding strip 8c and the second holding strip 8d, and the inner ring heat-insulating cotton 1.1 is gradually formed; the portions of the two sides of the insulation cotton 1 which have not been bent/folded are denoted as a left wing 1a and a right wing 1b as shown in fig. 8 and 9;
at the same time; the left heat-preservation cotton clamping device 3 and the right heat-preservation cotton clamping device 4 are adaptively mutually close and descend, so that the left wing 1a and the right wing 1b are always kept in a loose horizontal state;
as the first clamping strip 8c and the second clamping strip 8d respectively move anticlockwise and clockwise along the outline path of the steam inner pipe 11 until a complete inner ring heat preservation cotton 1.1 is formed, the first heat preservation cotton closing section 1.2 and the second heat preservation cotton closing section 1.3 which are formed by the anticlockwise end and the clockwise end of the inner ring heat preservation cotton 1.1 and are bent downwards are clamped between the first clamping strip 8c and the second clamping strip 8d, at the moment, the first clamping strip 8c and the second clamping strip 8d are controlled to press the first heat preservation cotton closing section 1.2 and the second heat preservation cotton closing section 1.3 which are clung to each other in the direction of approaching each other, so that the open ring inner ring heat preservation cotton 1.1 becomes a closed ring and has the trend of inwards shrinking, and the inner ring heat preservation cotton 1.1 is clung to the outer wall of the steam inner pipe 11, and maintains the state; as in fig. 10;
fifthly, uniformly distributing a plurality of annular dividing pieces 10 with openings 20 at the lower ends and sleeving the annular dividing pieces outside the formed inner ring heat-insulating cotton 1.1, and then respectively welding the anticlockwise ends and the clockwise ends of the annular dividing pieces 10 to connect the first clamping strip 8c and the second clamping strip 8d; the whole heat-insulating cotton skeleton 31 formed by the first clamping strip 8c, the second clamping strip 8d and the circular dividing pieces 10 is coaxially sleeved outside the formed inner ring heat-insulating cotton 1.1;
the left clip strip clamping device 43 and the right clip strip clamping device 44 release the first clip strip 8c and the second clip strip 8d, respectively; then, the left holding strip clamping device 43 and the right holding strip clamping device 44 are controlled to clamp the third holding strip 8a and the fourth holding strip 8b respectively, and the third holding strip 8a and the fourth holding strip 8b are respectively contacted with the lower side surface of the right end of the left wing 1a and the lower side surface of the left end of the right wing 1b in parallel; as in fig. 11;
step six, the driving device drives the left holding strip clamping device 43 and the right holding strip clamping device 44 to displace respectively, so as to drive the third holding strip 8a and the fourth holding strip 8b clamped by the left holding strip clamping device 43 and the right holding strip clamping device 44 to displace clockwise and anticlockwise along the outline path of the heat insulation cotton skeleton 31 respectively, and simultaneously the left heat insulation cotton clamping device 3 and the right heat insulation cotton clamping device 4 release the left wing 1a and the right wing 1b respectively, so that the left wing 1a and the right wing 1b are gradually attached to the periphery of the heat insulation cotton skeleton 31 gradually in an arc shape under the arc motion constraint of the third holding strip 8a and the fourth holding strip 8b, and the left wing 1a and the right wing 1b are gradually formed into a left semicircular arc heat insulation cotton 1.4 and a right semicircular arc heat insulation cotton 1.5; as in fig. 12 and 13;
when the complete left semicircular arc heat preservation cotton 1.4 and the right semicircular arc heat preservation cotton 1.5 are formed, a third heat preservation cotton closing section 1.6 and a fourth heat preservation cotton closing section 1.7 which are formed by the clockwise end of the left semicircular arc heat preservation cotton 1.4 and the anticlockwise end of the right semicircular arc heat preservation cotton 1.5 and are bent upwards are clamped between a third clamping strip 8a and a fourth clamping strip 8b, at the moment, the first clamping strip 8c and the second clamping strip 8d are controlled to extrude the third heat preservation cotton closing section 1.6 and the fourth heat preservation cotton closing section 1.7 which are clung to each other in the direction of approaching each other, so that the left semicircular arc heat preservation cotton 1.4 and the right semicircular arc heat preservation cotton 1.5 are combined into a closed loop cylindrical structure and have inward shrinkage trend, and further the tight holding of the heat preservation cotton skeleton 31 is realized; at this time, an independent heat insulation empty bin 13 is formed between any two adjacent circular ring-shaped partition sheets 10 of the heat insulation cotton skeleton 31; as in fig. 14;
step seven, preparing a plurality of locking bolts 6 with pointed ends 5, enabling each locking bolt 6 to pass through bolt passing holes 41 on a third holding strip 8a and a fourth holding strip 8b, and puncturing a third heat-insulation cotton closing section 1.6 and a fourth heat-insulation cotton closing section 1.4 between the third holding strip 8a and the fourth holding strip 8b; then the end of the locking bolt 6 close to the tip 5 is locked by the nut 7, so that the third clamping strip 8a and the fourth clamping strip 8b tightly squeeze the third heat-insulation cotton closing section 1.6 and the fourth heat-insulation cotton closing section 1.4; the heat preservation cotton layer coated outside the steam inner pipe 11 is completely coated;
and step eight, coaxially sleeving an outer tube 9 outside the heat-insulating cotton layer, and fixing the end part of the outer tube 9 with the outer wall of one end of the steam inner tube 11 through a plurality of welding brackets 2.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (5)
1. Heat preservation structure of steam heat preservation pipe, its characterized in that: the heat-insulating cotton composite pipe comprises a steam inner pipe (11), wherein a heat-insulating cotton layer is coated outside the steam inner pipe (11); the heat-insulating cotton layer comprises cylindrical inner-layer heat-insulating cotton and outer-layer heat-insulating cotton;
the heat-insulating cotton thermal insulation device is characterized by further comprising a heat-insulating cotton skeleton (31) coaxial with the steam inner pipe (11), wherein the inner heat-insulating cotton and the outer heat-insulating cotton are formed by bending/bending a piece of complete rectangular heat-insulating cotton (1), and after the rectangular heat-insulating cotton (1) is bent/bent into the inner heat-insulating cotton and the outer heat-insulating cotton, the heat-insulating cotton skeleton (31) is sandwiched between the inner heat-insulating cotton and the outer heat-insulating cotton, and the heat-insulating cotton skeleton divides the space between the inner heat-insulating cotton and the outer heat-insulating cotton into a plurality of independent heat-insulating empty bins (13);
the inner-layer heat-insulating cotton comprises a layer of cylindrical inner-ring heat-insulating cotton (1.1) with an open loop at the lower end, wherein the layer of cylindrical inner-ring heat-insulating cotton is tightly covered outside a steam inner pipe (11), and the anticlockwise end and the clockwise end of the open loop inner-ring heat-insulating cotton (1.1) are respectively bent downwards to form a first heat-insulating cotton closing section (1.2) and a second heat-insulating cotton closing section (1.3); the steam generator further comprises a first holding strip (8 c) and a second holding strip (8 d) which are parallel to the axis of the steam inner pipe (11); the first clamping strip (8 c) and the second clamping strip (8 d) are clamped at two sides of the first heat-preserving cotton closing section (1.2) and the second heat-preserving cotton closing section (1.3) in parallel, so that the first heat-preserving cotton closing section (1.2) and the second heat-preserving cotton closing section (1.3) are tightly extruded, and the first heat-preserving cotton closing section (1.2) and the second heat-preserving cotton closing section (1.3) which are mutually extruded enable the open-loop inner ring heat-preserving cotton (1.1) to be closed loop and have the trend of inwards shrinking;
the heat preservation cotton skeleton (31) comprises a plurality of annular dividing pieces (10) which are distributed at equal intervals in a coaxial way, an opening (20) is formed in the lower end of each annular dividing piece (10), the inner ring of each annular dividing piece (10) is coaxially sleeved outside the inner ring heat preservation cotton (1.1), and the anticlockwise end and the clockwise end of each annular dividing piece (10) are respectively welded and connected with the first clamping strip (8 c) and the second clamping strip (8 d);
the outer layer heat-insulating cotton consists of left semicircular arc heat-insulating cotton (1.4) and right semicircular arc heat-insulating cotton (1.5) which are coaxial; the inner walls of the left semi-circular arc heat preservation cotton (1.4) and the right semi-circular arc heat preservation cotton (1.5) are attached to the outer ring outline (10.1) of each circular ring-shaped dividing piece (10), and an independent heat insulation empty bin (13) is formed between any two adjacent circular ring-shaped dividing pieces (10);
the anticlockwise end of the left semicircular arc heat preservation cotton (1.4) is connected with the lower end of the first heat preservation cotton closing section (1.2) into a whole, and the clockwise end of the right semicircular arc heat preservation cotton (1.5) is connected with the lower end of the second heat preservation cotton closing section (1.3) into a whole;
the clockwise end of the left semicircular arc heat preservation cotton (1.4) and the anticlockwise end of the right semicircular arc heat preservation cotton (1.5) are respectively bent upwards integrally to form a third heat preservation cotton closing section (1.6) and a fourth heat preservation cotton closing section (1.7);
the steam generator also comprises a third holding strip (8 a) and a fourth holding strip (8 b) which are parallel to the axis of the steam inner pipe (11); the third clamping strip (8 a) and the fourth clamping strip (8 b) are clamped on two sides of the third heat-insulation cotton closing section (1.6) and the fourth heat-insulation cotton closing section (1.7) in parallel, so that the third heat-insulation cotton closing section (1.6) and the fourth heat-insulation cotton closing section (1.7) are tightly extruded, the third heat-insulation cotton closing section (1.6) and the fourth heat-insulation cotton closing section (1.7) which are mutually extruded and the first heat-insulation cotton closing section (1.2) and the second heat-insulation cotton closing section (1.3) which are mutually extruded enable the left semicircular arc heat-insulation cotton (1.4) and the right semicircular arc heat-insulation cotton (1.5) to be spliced into a closed loop cylindrical structure, and the closed loop has a trend of inwards shrinking.
2. The insulation structure of a steam insulation pipe according to claim 1, wherein: the left semi-circular heat-insulating cotton (1.4), the right semi-circular heat-insulating cotton (1.5), the first heat-insulating cotton closing section (1.2), the second heat-insulating cotton closing section (1.3), the inner ring heat-insulating cotton (1.1), the third heat-insulating cotton closing section (1.6) and the fourth heat-insulating cotton closing section (1.7) are formed by bending/bending rectangular heat-insulating cotton (1).
3. The insulation cotton wrapping process of the insulation structure of the steam insulation pipe according to claim 1, wherein the insulation cotton wrapping process is characterized in that:
step one, clamping and fixing a steam inner pipe (11) in a horizontal posture;
step two, the middle part of the horizontal rectangular heat preservation cotton (1) is tangent with the top of the steam inner pipe (11);
thirdly, enabling the first holding strip (8 c) and the second holding strip (8 d) to be contacted with the upper surface of the middle part of the rectangular heat-insulating cotton (1);
step four, the first clamping strip (8 c) and the second clamping strip (8 d) respectively move anticlockwise and clockwise along the outline path of the steam inner tube (11), so that the middle part of the rectangular heat-insulating cotton (1) is gradually attached to the outer wall of the steam inner tube (11) in an arc shape under the motion constraint of the first clamping strip (8 c) and the second clamping strip (8 d), and the inner ring heat-insulating cotton (1.1) is gradually formed; the parts of the two sides of the heat-insulating cotton (1) which are not bent/folded are marked as a left wing (1 a) and a right wing (1 b);
when a complete inner ring heat preservation cotton (1.1) is formed, a first heat preservation cotton closing section (1.2) and a second heat preservation cotton closing section (1.3) which are formed by the anticlockwise end and the clockwise end of the inner ring heat preservation cotton (1.1) and are bent downwards are clamped between a first clamping strip (8 c) and a second clamping strip (8 d);
fifthly, enabling the whole heat-insulating cotton skeleton (31) formed by the first clamping strip (8 c), the second clamping strip (8 d) and the circular dividing pieces (10) to be coaxially sleeved outside the formed inner ring heat-insulating cotton (1.1);
the third holding strip (8 a) and the fourth holding strip (8 b) are respectively contacted with the lower side surface of the right end of the left wing (1 a) and the lower side surface of the left end of the right wing (1 b) in parallel;
step six, the third holding strip (8 a) and the fourth holding strip (8 b) respectively displace clockwise and anticlockwise along the outline path of the heat-insulating cotton skeleton (31), the left wing (1 a) and the right wing (1 b) are gradually attached to the periphery of the heat-insulating cotton skeleton (31) gradually in an arc shape under the arc motion constraint of the third holding strip (8 a) and the fourth holding strip (8 b), and the left wing (1 a) and the right wing (1 b) are gradually formed into left semicircular arc-shaped heat-insulating cotton (1.4) and right semicircular arc-shaped heat-insulating cotton (1.5);
when the complete left semi-circular arc heat preservation cotton (1.4) and the right semi-circular arc heat preservation cotton (1.5) are formed, a third heat preservation cotton closing section (1.6) and a fourth heat preservation cotton closing section (1.7) which are bent upwards and formed by the clockwise end of the left semi-circular arc heat preservation cotton (1.4) and the anticlockwise end of the right semi-circular arc heat preservation cotton (1.5) are clamped between a third clamping strip (8 a) and a fourth clamping strip (8 b).
4. A device for a thermal insulation cotton coating process of a thermal insulation structure of a steam thermal insulation pipe according to claim 3, which is characterized in that: the device comprises a left heat-insulating cotton clamping device (3) and a right heat-insulating cotton clamping device (4), wherein the left heat-insulating cotton clamping device (3) and the right heat-insulating cotton clamping device (4) can clamp the left outline edge and the right outline edge of rectangular heat-insulating cotton (1) respectively; the driving device can respectively drive the left heat-preservation cotton clamping device (3) and the right heat-preservation cotton clamping device (4) to do arbitrary X Y direction displacement.
5. The device for the insulation cotton wrapping process of the insulation structure of the steam insulation pipe according to claim 4, which is characterized in that: the clamping device comprises a left clamping strip clamping device (43) and a right clamping strip clamping device (44), wherein a driving device can respectively drive the left clamping strip clamping device (43) and the right clamping strip clamping device (44) to do arbitrary X Y-direction displacement, and the left clamping strip clamping device (43) and the right clamping strip clamping device (44) respectively clamp a first clamping strip (8 c) and a second clamping strip (8 d); the first clamping strip (8 c) and the second clamping strip (8 d) respectively follow the left clamping strip clamping device (43) and the right clamping strip clamping device (44) to synchronously displace; after the left holding device (43) and the right holding device (44) release the first holding strip (8 c) and the second holding strip (8 d), the third holding strip (8 a) and the fourth holding strip (8 b) can be held by clamping respectively.
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| CN202211190936.6A CN115574196B (en) | 2022-09-28 | 2022-09-28 | Heat preservation structure and heat preservation coating process of steam heat preservation pipe |
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| GB390380A (en) * | 1932-07-18 | 1933-04-06 | A V Holm Aktiebolag | Method of manufacturing insulating sleeves |
| EP0175943A1 (en) * | 1984-08-27 | 1986-04-02 | Kurt Fischer | Sheath for the thermal insulation of a pipe conveying a warm or cold fluid |
| KR100915630B1 (en) * | 2008-09-30 | 2009-09-04 | 김국수 | Insulation cover for piping and method for constructing the same |
| JP3180132U (en) * | 2012-09-21 | 2012-12-06 | 千代田工業株式会社 | Vacuum insulated water pipe |
| CN109723937A (en) * | 2019-01-31 | 2019-05-07 | 上海科华热力管道有限公司 | The prefabricated aerial composite vapor insulating tube of one kind and its manufacturing method |
| CN215111343U (en) * | 2021-06-28 | 2021-12-10 | 泰州金泰环保热电有限公司 | Reduce heat loss's steam conduit insulation construction |
| CN216813442U (en) * | 2022-01-19 | 2022-06-24 | 邓州市华诚管业有限公司 | Engineering anticorrosion heat-insulation pipe |
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2022
- 2022-09-28 CN CN202211190936.6A patent/CN115574196B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB390380A (en) * | 1932-07-18 | 1933-04-06 | A V Holm Aktiebolag | Method of manufacturing insulating sleeves |
| EP0175943A1 (en) * | 1984-08-27 | 1986-04-02 | Kurt Fischer | Sheath for the thermal insulation of a pipe conveying a warm or cold fluid |
| KR100915630B1 (en) * | 2008-09-30 | 2009-09-04 | 김국수 | Insulation cover for piping and method for constructing the same |
| JP3180132U (en) * | 2012-09-21 | 2012-12-06 | 千代田工業株式会社 | Vacuum insulated water pipe |
| CN109723937A (en) * | 2019-01-31 | 2019-05-07 | 上海科华热力管道有限公司 | The prefabricated aerial composite vapor insulating tube of one kind and its manufacturing method |
| CN215111343U (en) * | 2021-06-28 | 2021-12-10 | 泰州金泰环保热电有限公司 | Reduce heat loss's steam conduit insulation construction |
| CN216813442U (en) * | 2022-01-19 | 2022-06-24 | 邓州市华诚管业有限公司 | Engineering anticorrosion heat-insulation pipe |
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|---|---|
| CN115574196A (en) | 2023-01-06 |
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