CN104406008A - Heat insulation facility of polyethylene gas pipeline and heat insulation method of heat insulation facility - Google Patents
Heat insulation facility of polyethylene gas pipeline and heat insulation method of heat insulation facility Download PDFInfo
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- CN104406008A CN104406008A CN201410613027.8A CN201410613027A CN104406008A CN 104406008 A CN104406008 A CN 104406008A CN 201410613027 A CN201410613027 A CN 201410613027A CN 104406008 A CN104406008 A CN 104406008A
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- fuel gas
- gas pipeline
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- heat distribution
- insulation
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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
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- General Engineering & Computer Science (AREA)
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- Thermal Insulation (AREA)
Abstract
The invention discloses a heat insulation facility of a polyethylene gas pipeline and a heat insulation method of the heat insulation facility. The heat insulation facility comprises a group of heat pipelines embedded in soil and a polyethylene gas pipeline which is paved to be parallel to or vertical to the heat pipelines and is used for conveying a gas medium; a heat insulation protecting plate is arranged between the heat pipelines and the polyethylene gas pipeline; the heat insulation protecting plate is a flat plate or a circular arc plate or a flat arc combined plate, wherein flat arc combined plate is a coaming formed by combining a middle flat plate section and two circular arc plates. The heat insulation facility of the polyethylene gas pipeline can solve the existing technical problem, ensures the gas pipeline to safely run under a surrounding temperature not more than 40 DEG C or under a lower temperature, and can reduce the horizontal clear distance and the vertical clear distance between the polyethylene gas pipeline and the heat pipelines.
Description
Technical field
The invention belongs to gas pipeline field of engineering technology, be specifically related to a kind of insulation facility and the heat insulation method thereof of laying polyvinyl fuel gas pipeline.
Background technique
When People's Republic of China (PRC) professional standard CJJ 63-2008 " polyvinyl fuel gas pipeline engineering code " defines and arranges underground polyvinyl fuel gas pipeline, underground polyvinyl fuel gas pipeline should and heat distribution pipeline between net level length and vertical clearance should not be less than specific value, and should guarantee that gas pipeline surrounding soil temperature is not more than 40 DEG C.
But in Practical Project, because pipeline various in community is more, and the space that can lay the line is less, therefore, when arranging polyvinyl fuel gas pipeline, the net level length of fuel gas polyethylene pipeline and heating pipeline parallel lay-up is difficult to ensure; Meanwhile, because heating pipeline earthing is generally 1.0 meters, fuel gas polyethylene pipeline thickness of earth covering is not less than 0.9 meter under motorway, under non-motorway (containing walk), must not be less than 0.6 meter, and vertical clearance when laying that intersects is difficult to ensure.Therefore, in order to meet the requirement of above-mentioned spacing and earthing, often polyethylene tube steel can be moulded crossover sub and be converted to steel pipe by designer, and polyethylene pipe antiseptic property is excellent, the advantage of long service life just cannot effectively utilize; If in intersection place ungratified with parallel clear distance, with steel pipe, other place polyethylene pipes, then the integrity of pipe-line system is destroyed again.
Summary of the invention
The object of this invention is to provide a kind of insulation facility laying polyvinyl fuel gas pipeline, it can solve the problem of prior art, under the security context that guarantee gas pipeline peripheral temperature is not more than 40 DEG C or lower temperature, net level length and the vertical clearance of polyvinyl fuel gas pipeline and heat distribution pipeline can be shortened.
For achieving the above object, the present invention takes following design proposal:
An insulation facility for polyvinyl fuel gas pipeline, comprises one group and is embedded in the heat distribution pipeline in soil and is parallel to each other with it or the polyvinyl fuel gas pipeline of delivery of fuel gas medium that square crossing is laid; Insulation backplate together with establishing between heat distribution pipeline with polyvinyl fuel gas pipeline; Described insulation backplate is one flat board, or is one circular arc plate, or is one flat arc modular panel, and wherein, described flat arc modular panel is the coaming plate be combined to form by central flat section and both sides circular arc plate section.
In the insulation facility of described polyvinyl fuel gas pipeline, the distance of the central position distance polyvinyl fuel gas pipeline pipe outer wall of described insulation backplate wall is 0 ~ 0.2m.
In the insulation facility of described polyvinyl fuel gas pipeline, described one group of heat distribution pipeline and polyvinyl fuel gas pipeline are parallel to each other and lay, and establish flat board or the board-like insulation backplate of circular arc between this heat distribution pipeline and polyvinyl fuel gas pipeline; The thickness direction of this flat insulation backplate and the axis place plane parallel of aforementioned two parallel laid pipelines, arc form insulation backplate medial axis is in the plane at the axis place of aforementioned two parallel laid pipelines, and insulation backplate is relative to the axis place plane symmetry of two parallel laid pipelines.
In the insulation facility of described polyvinyl fuel gas pipeline, described insulation backplate be by a component body unit plate mutually bonding or Tenon engage the whole cell board formed; During according to Tenon juncture, each with the tenon engaged for Tenon or mortise in the both ends of the surface of each split cell board length direction.
In the insulation facility of described polyvinyl fuel gas pipeline, described one group of heat distribution pipeline and the mutual square crossing of polyvinyl fuel gas pipeline are laid, and this group heat distribution pipeline comprises confession, backwater two heat distribution pipelines of parallel laying; Then, between this group heat distribution pipeline and polyvinyl fuel gas pipeline, a) establish flat board or the board-like insulation backplate of circular arc, and the polyvinyl fuel gas pipeline described in the sensing of the concave surface of circular arc plate; The medial axis of described insulation backplate is immediately below polyvinyl fuel gas pipeline axis, and insulation backplate length direction is parallel with polyvinyl fuel gas pipeline; Or, between this group heat distribution pipeline and polyvinyl fuel gas pipeline, b) establish circular arc plate or the board-like insulation backplate of flat arc combined type, and the heat distribution pipeline described in the sensing of the concave surface of circular arc plate or flat arc modular panel; The plane that the center line of the medial axis of this insulation backplate and aforementioned confession, backwater two heat distribution pipeline axis is formed with for, backwater two heat distribution pipeline axis place plane orthogonal, width direction is symmetrical relative to the center line of confession, backwater two heat distribution pipeline axis, length direction is parallel with heat distribution pipeline, and length direction is relative to polyvinyl fuel gas pipeline axisymmetrical.
In the insulation facility of described polyvinyl fuel gas pipeline, additional coated hard polyurethane foam thermal-insulating pipe case on polyvinyl fuel gas pipeline, it is at least half-shell and is positioned at towards heat distribution pipeline side; This thermal-insulating pipe case length direction is spliced mutually by the above cell cube thermal-insulating pipe case of two joints; Each cell cube thermal-insulating pipe case is formed by the little halfbody thermal-insulating pipe case docking of one, two halfbodies or more than three; The independent Tenon that adopts engages separately between described each joint cell cube thermal-insulating pipe case and between the halfbody docked between two in described cell cube or little halfbody thermal-insulating pipe case, or adopts integral Tenon to engage.
If when one group of heat distribution pipeline and the mutual square crossing of polyvinyl fuel gas pipeline are laid, also should sheathed one section of hard sleeve on polyvinyl fuel gas pipeline.
In the insulation facility of described polyvinyl fuel gas pipeline, described insulation backplate can be the hard polyurethane foam board that thermal conductivity (under 50 DEG C of states) is less than or equal to the hole-closing structure of 0.033W/ (mK).
Another object of the present invention is to provide a kind of heat preservation and insulation method laying polyvinyl fuel gas pipeline, and it can solve the problem of prior art, to ensure that gas pipeline peripheral temperature is not more than 40 DEG C or lower temperature.
A heat preservation and insulation method for the polyvinyl fuel gas pipeline utilizing above-mentioned insulation facility described in any one to realize, comprises the one group of heat distribution pipeline be embedded in soil; Its method is as follows:
Before the polyvinyl fuel gas pipeline burying delivery of fuel gas medium underground, first according to installing on-the-spot operating mode, the polyvinyl fuel gas pipeline of delivery of fuel gas medium and the one group of heat distribution pipeline be embedded in soil to be parallel to each other or square crossing is laid and buried, then insulation backplate that is dull and stereotyped together with at least establishing between heat distribution pipeline with polyvinyl fuel gas pipeline, that be with radian plate; This band radian plate is circular arc plate or flat arc modular panel, and wherein, described flat arc modular panel is the coaming plate be combined to form by central flat section and both sides circular arc plate section.
In the heat preservation and insulation method of described polyvinyl fuel gas pipeline, when polyvinyl fuel gas pipeline and the one group of heat distribution pipeline be embedded in soil be parallel to each other lay time, described flat board or band radian plate will be made in advance, flat board or the band radian plate of one group of monomer is first made with mould, with the tenon combined for Tenon or mortise on two butt joint edges of each flat board or band radian plate length direction, in erecting bed, the flat board of one group of monomer or band radian plate are docked continuously, form insulation backplate overall together.
In the heat preservation and insulation method of described polyvinyl fuel gas pipeline, the thermal-insulating pipe case of one group of halfbody or little halfbody can also be precast in advance, laying the scene of polyvinyl fuel gas pipeline, leading hard polyurethane foam thermal-insulating pipe case carries out coated to polyvinyl fuel gas pipeline, at least completely coated halfbody towards heat distribution pipeline side.
Advantage of the present invention is: can solve when Practical Project arranges fuel gas polyethylene pipeline, polyvinyl fuel gas pipeline and existing heat distribution pipeline intersect or parallel laid time when cannot meet the minimum level clear distance between embedded underground polyvinyl fuel gas pipeline and heat distribution pipeline or vertical clearance that CJJ 63-2008 " polyvinyl fuel gas pipeline engineering code " specifies, by adopting technological scheme of the present invention, polyvinyl fuel gas pipeline safe operation under peripheral temperature is not more than 40 DEG C or lower temperature can be ensured.
Accompanying drawing explanation
Fig. 1 a is the insulation facility first example structure schematic diagram (polyvinyl fuel gas pipeline buried underground and heat distribution pipeline are parallel to each other and lay, and adopt plate shaped hard polyurethane foam insulation backplate) of polyvinyl fuel gas pipeline of the present invention.
Fig. 1 b is the axial view (i.e. A to) of Fig. 1 a illustrated embodiment.
Fig. 2 a is that (polyvinyl fuel gas pipeline buried underground and heat distribution pipeline are parallel to each other and lay for the insulation facility second example structure schematic diagram of polyvinyl fuel gas pipeline of the present invention, adopt circular arc plate hard polyurethane foam insulation backplate, the concave surface of circular arc plate points to polyvinyl fuel gas pipeline).
Fig. 2 b is the axial view of Fig. 2 a illustrated embodiment.
Fig. 3 a is that (polyvinyl fuel gas pipeline buried underground and heat distribution pipeline are parallel to each other and lay for insulation facility the 3rd example structure schematic diagram of polyvinyl fuel gas pipeline of the present invention, adopt circular arc plate hard polyurethane foam insulation backplate, the concave surface of circular arc plate points to heat distribution pipeline).
Fig. 3 b is the axial view (i.e. B to) of Fig. 3 a illustrated embodiment.
Fig. 4 a is insulation facility the 4th example structure schematic diagram (polyvinyl fuel gas pipeline buried underground and the mutual square crossing of heat distribution pipeline are laid, and adopt plate shaped plate hard polyurethane foam insulation backplate) of polyvinyl fuel gas pipeline of the present invention.
Fig. 4 b is the structural representation (C to) of Fig. 4 a illustrated embodiment.
Fig. 5 a is insulation facility the 5th example structure schematic diagram (polyvinyl fuel gas pipeline 1 buried underground is laid with the mutual square crossing of heat distribution pipeline 2, and the hard polyurethane foam insulation backplate 3 of employing is the circular arc plate that concave surface points to polyvinyl fuel gas pipeline 1) of polyvinyl fuel gas pipeline of the present invention.
Fig. 5 b is the structural representation (F to) of Fig. 5 a illustrated embodiment.
Fig. 6 a is insulation facility the 6th example structure schematic diagram (polyvinyl fuel gas pipeline 1 buried underground is laid with the mutual square crossing of heat distribution pipeline 2, and the hard polyurethane foam insulation backplate 3 of employing is the circular arc plate that concave surface points to heat distribution pipeline 2) of polyvinyl fuel gas pipeline of the present invention.
Fig. 6 b is the structural representation (D to) of Fig. 6 a illustrated embodiment.
Fig. 7 a is insulation facility the 7th example structure schematic diagram (polyvinyl fuel gas pipeline 1 buried underground is laid with the mutual square crossing of heat distribution pipeline 2, and the hard polyurethane foam insulation backplate 3 of employing is the flat arc modular panel that concave surface points to heat distribution pipeline 2) of polyvinyl fuel gas pipeline of the present invention.
Fig. 7 b is the structural representation (E to) of Fig. 7 a illustrated embodiment.
Fig. 8 a is insulation facility the 8th example structure schematic diagram (reinforced, coated thermal-insulating pipe case on polyvinyl fuel gas pipeline) of polyvinyl fuel gas pipeline of the present invention.
Fig. 8 b is the structural representation (G to) of Fig. 8 a illustrated embodiment.
Fig. 9 is insulation facility the 9th example structure schematic diagram (reinforced, coated thermal-insulating pipe case on polyvinyl fuel gas pipeline) of polyvinyl fuel gas pipeline of the present invention.
Figure 10 is the structural representation (tenon and mortise are shown) of monomer flat board of the present invention.
Figure 11 is the structural representation of monomer circular arc plate of the present invention.
Figure 12 is the coated thermal-insulating pipe case structural representation of polyvinyl fuel gas pipeline of the present invention (three-dimensional view, the integral protection of two joint cell cube thermal-insulating pipe cases docking compositions).
Figure 13 a is hard polyurethane foam pipe heat insulation layer structure schematic diagram of the present invention (three-dimensional view, a halfbody thermal-insulating pipe case illustrate that its length direction one end is with mortise).
Figure 13 b is hard polyurethane foam pipe heat insulation layer structure schematic diagram of the present invention (three-dimensional view, a halfbody thermal-insulating pipe case illustrate that its length direction one end is with tenon).
Figure 13 c is hard polyurethane foam pipe heat insulation layer structure schematic diagram (side view) of the present invention.
In figure: 1. polyvinyl fuel gas pipeline; 2. heat distribution pipeline; 3. insulation backplate; 301. insulation backplate tenons; 302. insulation backplate mortises; 4. hard sleeve; 5. thermal-insulating pipe case; 501. thermal-insulating pipe case tenons; 502. thermal-insulating pipe case mortises.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further details.
Embodiment
Consult shown in Fig. 1 a, Fig. 2 a, Fig. 3 a, Fig. 4 a, Fig. 5 a, Fig. 6 a and Fig. 7 a, the main innovate point of the insulation facility of polyvinyl fuel gas pipeline of the present invention is: be embedded in the polyvinyl fuel gas pipeline 1 hard polyurethane foam insulation backplate 3 together with arranging between heat distribution pipeline 2 in soil at one group.
Described insulation backplate 3 adopts hard polyurethane foam plate, and it is hole-closing structure, and play insulation heat insulating function, the hard polyurethane foam board selecting thermal conductivity (under 50 DEG C of states) to be less than or equal to 0.033W/ (mK) is good.
The shape of described hard polyurethane foam insulation backplate 3 can be dull and stereotyped (see Fig. 1 a, Fig. 1 b, Fig. 4 a and Fig. 4 b), or adopt circular arc plate (see Fig. 2 a, Fig. 2 b, Fig. 3 a, Fig. 3 b, Fig. 5 a, Fig. 5 b, Fig. 6 a and Fig. 6 b), also or one flat arc modular panel in limit (see Fig. 7 a and Fig. 7 b, this flat arc modular panel is the coaming plate be combined to form by central flat section and both sides circular arc plate section), its concrete size can according to the size of polyvinyl fuel gas pipeline and heat distribution pipeline, relative position and determining.
The burial place of described hard polyurethane foam insulation backplate 3 in soil should between polyvinyl fuel gas pipeline 1 and heat distribution pipeline 2, and the central position of insulation backplate wall is 0 ~ 0.2m apart from the distance of polyvinyl fuel gas pipeline pipe outer wall.
When polyvinyl fuel gas pipeline 1 with heat distribution pipeline 2 parallel laid and heat insulation with plate shaped hard polyurethane foam insulation backplate 3 time, the thickness direction of plate shaped hard polyurethane foam insulation backplate 3 and two parallelpipeds (polyvinyl fuel gas pipeline 1 and heat distribution pipeline 2) axis place plane parallel, plate shaped hard polyurethane foam insulation backplate 3 is relative to two parallelpiped axis place plane symmetry, length direction is parallel with two conduit axis, see Fig. 1 a and Fig. 1 b.
When polyvinyl fuel gas pipeline 1 is with heat distribution pipeline 2 parallel laid and when adopting circular arc plate hard polyurethane foam insulation backplate 3 heat insulation, the axis of circular arc plate hard polyurethane foam insulation backplate 3 should in two parallelpiped axis institutes planar, and circular arc plate hard polyurethane foam insulation backplate 3 is relative to two parallelpiped axis place plane symmetry, as the laying side of polyvinyl fuel gas pipeline, the circular arc concave surface of circular arc plate hard polyurethane foam insulation backplate 3 should be pointed to polyvinyl fuel gas pipeline 1, see Fig. 2 a and Fig. 2 b in construction; As the laying side of heat distribution pipeline, in construction, the circular arc concave surface of circular arc plate hard polyurethane foam insulation backplate 3 should be pointed to heat distribution pipeline 2, see Fig. 3 a and Fig. 3 b.
See Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b, Fig. 3 a and Fig. 3 b, when polyvinyl fuel gas pipeline 1 and heat distribution pipeline 2 parallel laid, hard polyurethane foam insulation backplate 3 length direction can be interconnected to constitute by a component body unit plate, should connection be fitted tightly each other, prevent too much heat from flowing through from gap between two plates.The mode connected both can be mutually bonding, and also Tenon engages; During according to Tenon juncture, each with the tenon 301 engaged for Tenon or mortise 302 (shown in Fig. 2 b) in the both ends of the surface of each split cell board length direction; Figure 10 shows the split cell board structure of straight-plate-type, and Figure 11 shows the board-like split cell board structure of circular arc.
When polyvinyl fuel gas pipeline 1 square crossing above or below heat distribution pipeline 2 is laid and is heat insulation with plate shaped hard polyurethane foam insulation backplate 3, heat distribution pipeline 2 needs the confession considering parallel laying, backwater two pipelines, the thickness direction of plate shaped hard polyurethane foam insulation backplate 3 should with confession, the plane orthogonal at backwater two heat distribution pipeline axis places, plate shaped hard polyurethane foam insulation backplate 3 width direction is symmetrical relative to two heat distribution pipeline axis center lines, length direction is parallel with heat distribution pipeline 2, length direction is relative to polyvinyl fuel gas pipeline 1 axisymmetrical, see Fig. 4 a and Fig. 4 b.
When polyvinyl fuel gas pipeline 1 square crossing above or below heat distribution pipeline 2 is laid and is used circular arc plate hard polyurethane foam insulation backplate 3 heat insulation, as the laying side of polyvinyl fuel gas pipeline, the concave surface of the circular arc plate of circular arc plate hard polyurethane foam insulation backplate 3 should be pointed to polyvinyl fuel gas pipeline 1, see Fig. 5 a and Fig. 5 b in construction; As the laying side of heat distribution pipeline, in construction, the circular arc concave surface of circular arc plate hard polyurethane foam insulation backplate 3 should be pointed to heat distribution pipeline 2, see Fig. 6 a and Fig. 6 b; Under two kinds of situations, line parallel in the medial axis of circular arc plate hard polyurethane foam insulation backplate 3 and two heat distribution pipeline axis and the plane orthogonal that should form with two heat distribution pipeline axis with the plane of its formation, length direction is relative to polyvinyl fuel gas pipeline 1 axisymmetrical.
For the shape of hard polyurethane foam insulation backplate except adopting above-mentioned shape, also other shape can also be adopted, as: for confession, backwater two heat distribution pipelines 2 of square crossing laying, adopt flat arc modular panel together, this flat arc modular panel is the coaming plate (see Fig. 7 a and Fig. 7 b) be combined to form by central flat section and both sides circular arc plate section.
When one group of heat distribution pipeline and the mutual square crossing of polyvinyl fuel gas pipeline are laid, also can sheathed one section of hard sleeve 4 be (see Fig. 4 a, Fig. 5 a, Fig. 6 a and Fig. 7 a) again on polyvinyl fuel gas pipeline.
See Fig. 8 a, Fig. 8 b and Fig. 9, be strengthen insulation and heat insulation effect, 1 can a coated thermal-insulating pipe case 5 again on polyvinyl fuel gas pipeline; It is half side towards of heat distribution pipeline that this thermal-insulating pipe case at least covers polyvinyl fuel gas pipeline.
Described thermal-insulating pipe case 5 length direction can also be spliced mutually by the above cell cube thermal-insulating pipe case of two joints; Each cell cube thermal-insulating pipe case is formed by the little halfbody thermal-insulating pipe case docking of one or two halfbody or more than three.Integral coating is in embodiment shown in Fig. 8 a, Fig. 8 b and Fig. 9; Shown in Figure 12 is the integral protection structure that two joint cell cube thermal-insulating pipe case docking form.Shown in Figure 13 a, Figure 13 b and 13c is the structure of halfbody thermal-insulating pipe case.One side end face of this halfbody or little halfbody thermal-insulating pipe case has mortise 502, with tenon 501 on opposite side end face.Can be: independently adopt Tenon to engage separately between the halfbody docked between two in described cell cube or little halfbody thermal-insulating pipe case, or adopt integral Tenon to engage (two mortise UNICOMs namely, described two tenons combine as a whole).
The insulation facility of polyvinyl fuel gas pipeline of the present invention to be mainly used in Practical Project when embedded underground fuel gas polyethylene pipeline, polyvinyl fuel gas pipeline and existing heat distribution pipeline intersect or parallel laid time when cannot meet the minimum level clear distance between underground polyvinyl fuel gas pipeline and heat distribution pipeline or vertical clearance that CJJ 63-2008 " polyvinyl fuel gas pipeline engineering code " specifies, by burying hard polyurethane foam thermal insulation thermal insulation board underground, polyvinyl fuel gas pipeline is protected, to ensure polyvinyl fuel gas pipeline safe operation under Soil Surrounding is not more than 40 DEG C or lower temperature.
The above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; some improvements and modifications can also be made; therefore above explanation institute comprises and the structure shown in accompanying drawing should be considered as exemplary, and be not used to the protection domain of restriction the present patent application patent.
Claims (10)
1. an insulation facility for polyvinyl fuel gas pipeline, comprises one group and is embedded in the heat distribution pipeline in soil and is parallel to each other with it or the polyvinyl fuel gas pipeline of delivery of fuel gas medium that square crossing is laid; It is characterized in that: insulation backplate together with establishing between heat distribution pipeline with polyvinyl fuel gas pipeline; Described insulation backplate is one flat board, or is one circular arc plate, or is one flat arc modular panel, and wherein, described flat arc modular panel is the coaming plate be combined to form by central flat section and both sides circular arc plate section.
2. the insulation facility of polyvinyl fuel gas pipeline according to claim 1, is characterized in that: the distance of the central position distance polyvinyl fuel gas pipeline pipe outer wall of described insulation backplate wall is 0 ~ 0.2m.
3. the insulation facility of polyvinyl fuel gas pipeline according to claim 2, it is characterized in that: described one group of heat distribution pipeline and polyvinyl fuel gas pipeline are parallel to each other and lay, between this heat distribution pipeline and polyvinyl fuel gas pipeline, establish flat board or the board-like insulation backplate of circular arc; The thickness direction of this flat insulation backplate and the axis place plane parallel of aforementioned two parallel laid pipelines, arc form insulation backplate medial axis is in the plane at the axis place of aforementioned two parallel laid pipelines, and insulation backplate is relative to the axis place plane symmetry of two parallel laid pipelines.
4. the insulation facility of polyvinyl fuel gas pipeline according to claim 3, is characterized in that: described insulation backplate be by a component body unit plate mutually bonding or Tenon engage the whole cell board formed; During according to Tenon juncture, each with the tenon engaged for Tenon or mortise in the both ends of the surface of each split cell board length direction.
5. the insulation facility of polyvinyl fuel gas pipeline according to claim 1, is characterized in that: described one group of heat distribution pipeline and the mutual square crossing of polyvinyl fuel gas pipeline are laid, and this group heat distribution pipeline comprises confession, backwater two heat distribution pipelines of parallel laying; Then,
A) between this group heat distribution pipeline and polyvinyl fuel gas pipeline, establish flat board or the board-like insulation backplate of circular arc, and the polyvinyl fuel gas pipeline described in the sensing of the concave surface of circular arc plate; The medial axis of described insulation backplate is immediately below polyvinyl fuel gas pipeline axis, and insulation backplate length direction is parallel with polyvinyl fuel gas pipeline;
Or
B) between this group heat distribution pipeline and polyvinyl fuel gas pipeline, establish circular arc plate or the board-like insulation backplate of flat arc combined type, and the heat distribution pipeline described in the sensing of the concave surface of circular arc plate or flat arc modular panel; The plane that the center line of the medial axis of this insulation backplate and aforementioned confession, backwater two heat distribution pipeline axis is formed with for, backwater two heat distribution pipeline axis place plane orthogonal, width direction is symmetrical relative to the center line of confession, backwater two heat distribution pipeline axis, length direction is parallel with heat distribution pipeline, and length direction is relative to polyvinyl fuel gas pipeline axisymmetrical.
6. the insulation facility of polyvinyl fuel gas pipeline according to any one of claim 1 to 5, it is characterized in that: additional coated hard polyurethane foam thermal-insulating pipe case on polyvinyl fuel gas pipeline, it is at least half-shell and is positioned at towards heat distribution pipeline side; This thermal-insulating pipe case length direction is spliced mutually by the above cell cube thermal-insulating pipe case of two joints; Each cell cube thermal-insulating pipe case is formed by the little halfbody thermal-insulating pipe case docking of one, two halfbodies or more than three.
7. the insulation facility of polyvinyl fuel gas pipeline according to claim 6, it is characterized in that: the independent Tenon that adopts engages separately between described each joint cell cube thermal-insulating pipe case and between the halfbody docked between two in described cell cube or little halfbody thermal-insulating pipe case, or adopts integral Tenon to engage.
8. a heat preservation and insulation method for the polyvinyl fuel gas pipeline utilizing the insulation facility in claim 1 to 7 described in any one to realize, comprises the one group of heat distribution pipeline be embedded in soil; It is characterized in that method is as follows:
Before the polyvinyl fuel gas pipeline burying delivery of fuel gas medium underground, first according to the operating mode of erecting bed, the laying that the polyvinyl fuel gas pipeline of delivery of fuel gas medium and the one group of heat distribution pipeline be embedded in soil is parallel to each other is buried, then insulation backplate that is dull and stereotyped together with at least establishing between heat distribution pipeline with polyvinyl fuel gas pipeline, band radian plate; Or, be embedded in the insulation backplate first setting up one dull and stereotyped, band radian plate above in soil one group of heat distribution pipeline, and then above insulation backplate, the polyvinyl fuel gas pipeline of delivery of fuel gas medium is laid and bury, polyvinyl fuel gas pipeline should square crossing mutual to heat distribution pipeline;
Described band radian plate is circular arc plate or flat arc modular panel, and wherein, flat arc modular panel is the coaming plate be combined to form by central flat section and both sides circular arc plate section.
9. the heat insulation method of polyvinyl fuel gas pipeline according to claim 8, it is characterized in that: when polyvinyl fuel gas pipeline and the one group of heat distribution pipeline be embedded in soil be parallel to each other lay time, the insulation backplate of described flat board or band radian plate will be made in advance, flat board or the band radian plate of one group of monomer is first made with mould, with the tenon combined for Tenon or mortise on two butt joint edges of each flat board or band radian plate length direction, in erecting bed, the flat board of one group of monomer or band radian plate are docked continuously, form insulation backplate overall together.
10. the heat insulation method of polyvinyl fuel gas pipeline according to claim 8 or claim 9, it is characterized in that: the thermal-insulating pipe case precasting one group of halfbody or little halfbody in advance, laying the scene of polyvinyl fuel gas pipeline, carry out coated with hard polyurethane foam thermal-insulating pipe case to polyvinyl fuel gas pipeline, at least completely coated halfbody towards heat distribution pipeline side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410613027.8A CN104406008A (en) | 2014-11-04 | 2014-11-04 | Heat insulation facility of polyethylene gas pipeline and heat insulation method of heat insulation facility |
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| CN201410613027.8A CN104406008A (en) | 2014-11-04 | 2014-11-04 | Heat insulation facility of polyethylene gas pipeline and heat insulation method of heat insulation facility |
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Application publication date: 20150311 |