CN102442810A - Dry powder of insulating layer of insulating pipe support of directly-buried pipe - Google Patents
Dry powder of insulating layer of insulating pipe support of directly-buried pipe Download PDFInfo
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- CN102442810A CN102442810A CN2010102968644A CN201010296864A CN102442810A CN 102442810 A CN102442810 A CN 102442810A CN 2010102968644 A CN2010102968644 A CN 2010102968644A CN 201010296864 A CN201010296864 A CN 201010296864A CN 102442810 A CN102442810 A CN 102442810A
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Abstract
The invention relates to a dry powder of an insulating layer of an insulating pipe support of a directly-buried pipe, comprising base material, fine soft clay powder or fly ash, aluminum silicate fibers and steel fibers, wherein the weight of the fine soft clay powder or fly ash is 7.5-8.5% of the base material; the weight of the aluminum silicate is 8-10%; the weight of the steel fibers is 5-8% of the base material; the base material comprises high-alumina cement, large-particle expanded perlite, ceramsite, vermiculite and expanded perlite. The insulating pipe support of the directly-buried pipe obtained by applying the dry powder after forming slurry by adding water can resist 940-100 degrees centigrade, has heat conductivity of 0.15-0.2 W/M.k, compression strength of 1.4-2.2 MPa, rupture strength of 1.0-1.6 MPa and bulk density of 7150765 kg/m3 after being baked for 24 h at 110 degrees centigrade, is difficult to age during the operation, is convenient to install and saves working hours.
Description
Technical field
The present invention relates to a kind of thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier, belong to pipe insulation material technology field.
Background technology
Central heating can cut down the consumption of energy, and produces huge economy, society, environmental benefit.Along with the expansion of central heating scope, especially in steam heating system, steam pipeline is more and more longer, to pressure drop, temperature drop require increasingly high.
The thermofin of existing directly buried pipeline Thermal insulative pipe carrier is to adopt high temperature resistant asbestos pad as thermofin, and its shortcoming is exactly:
1, heatproof is low.Can only anti-200 ℃ of left and right sides temperature.
2, (no anchor nails device), easy ageing are prone to come off.
3, non-watertight.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, a kind of thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier is provided.
According to technical scheme provided by the invention; The thermofin dry powder of said directly buried pipeline Thermal insulative pipe carrier comprises: base-material, soft raw clay fine powder or flyash, aluminium silicate fiber peacekeeping steel fiber; The weight of soft raw clay fine powder or flyash is 7.5%～8.5% of base-material; The weight of aluminum silicate fiber is 8%～10% of base-material, and the weight of steel fiber is 5%～8% of base-material;
Described base-material comprises high-alumina cement, macrobead pearlstone, haydite, vermiculite and pearlstone, and the weight ratio of high-alumina cement, macrobead pearlstone, haydite, vermiculite and pearlstone is 1: (2～3): (3～4): (2～3): (6～7).
Because high-alumina cement, macrobead pearlstone, haydite, vermiculite and pearlstone are fine powder or fine particle, so their weight ratio also is equivalent to their volume ratio.
The particle diameter of said soft raw clay fine powder or flyash is 1.2～5mm.
The particle diameter of said macrobead pearlstone is 1.2～5mm.
The particle diameter of said haydite is 1.2～5mm.
The particle diameter of said vermiculite is 1.2～5mm.
The particle diameter of said pearlstone is 1.2～3mm.
The thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier of the present invention adds the directly buried pipeline Thermal insulative pipe carrier that obtains after the slurry construction that forms behind the water; Can anti-940～1000 ℃ high temperature; Thermal conductivity is 0.15～0.2W/Mk; Compressive strength is 1.4～2.2MPa, and folding strength is 1.0～1.6MPa, and 110 ℃, 24h baking back volume density are 715～765kg/m
3, be difficult in the operational process wearing out, easy for installation, save man-hour.
Embodiment
The thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier adds the thermofin slurry that obtains the directly buried pipeline Thermal insulative pipe carrier after water stirs, and the constructional method of this slurry can be selected casting method, spraying method and streak method for use.
The construction of hard heat-insulating layer should possess following condition:
1, the construction of hard heat-insulating layer must guarantee that there are good ventilation, illumination in the working district;
2, the construction of hard heat-insulating layer and between preserving period, envrionment temperature should be between 5～35 ℃, and avoid Exposure to Sunlight, drench with rain, endure cold, otherwise should take measures;
3, executing the lining personnel should can be on duty after training and examination is qualified;
The system of mixing of the thermofin slurry of directly buried pipeline Thermal insulative pipe carrier should meet following regulation:
1, the hard heat-insulating layered material should adopt forced mixer to stir in required time, forbids to sneak into foreign material;
2, the hard heat-insulating layered material should be prepared by the construction proportioning, and amount of water should be definite according to the shipment distance of construction proportioning and field temperature, humidity and wet feed, but the upper limit that must not the overshoot water consumption;
Water consumption must not be higher than 35% of total proportioning material volume, and water consumption must not be lower than 20% of total proportioning material volume.
3, each amount of agitation is too much unsuitable, and the wet feed that stirs should use up in 30min or specific time.The wet feed that surpasses time of coagulation is forbidden secondary to add water and is used;
When 4, mixing steel fiber, should steel fiber evenly be sprinkled in the dry mix, the time of stirring should be less than 1min.Add in the wet feed after water stirs, steel fiber should be evenly distributed, and agglomerating phenomenon must not be arranged.
The maintenance of hard heat-insulating layer, should observe following system:
1, the lining of hydraulic binding agent (high-alumina cement, pure calcium aluminate cement), park after the construction to light finger by not being stained with mud when slurry, should keep surface moisture or beginning mist wet curing 48h, natural curing 24h again;
2, behind the lining construction of phosphoric acid salt jointing compound, should be in air natural curing 3～7d, should keep dry between preserving period, relative air humidity must not be greater than 70%;
3, after the low cement hard heat-insulating layer construction, should be immediately with plastics film lid hard heat-insulating laminar surface, maintenance 48h in physical environment;
4, the maintenance of hard heat-insulating layer can transport after intact, lifting and thermal treatment; Should carry out finished product protection before going into operation.
When the levelling of hard heat-insulating laminar surface, compacting, forbid at surperficial swabbing, grout or spread dry cement.
The quality of hard heat-insulating layer should be with each trade mark of single construction or every 20m of proportioning
3, to test as a collection of indwelling sample, not enough this number is also done a collection of check.When each single construction adopted the same trade mark or proportioning repeatedly to construct, each construction should be stayed test check.The size of sample should be 160 * 40 * 40 (mm), its making, maintenance should with the same condition of hard heat-insulating layer engineering.
Rust cleaning
The liner annex can adopt sandblast or hand cleaning.
Rust cleaning should meet Sal grade standard among " petrochemical equipment and pipeline coating anticorrosion technique standard " SH3522.
Metallic surface after the rust cleaning should prevent to drench with rain and make moist, and the hard heat-insulating layer of constructing as early as possible.
The installation of anchor nails, end plate
The welding of anchor nails, end plate should meet following provisions:
1, when wind speed greater than 10m/s or be exposed to rain, snow during environment, forbid welding;
2, when the weldment temperature is lower than 0 ℃, should weldment be preheating to more than 15 ℃;
3, welding surface and in the 10mm scope water, iron rust, greasy dirt, accumulated slag and other foreign material must not be arranged on every side;
4, the foot welding height of all fillet welds and overlapping weld is the thickness of thin part except that indicating the person, and should be CW;
5, weld seam must not have defectives such as crackle, pore, arc crater and slag inclusion, and must not keep slag and splash;
Form work engineering should meet following regulation in the casting method:
Should guarantee hard heat-insulating layer structure and each size conforms design requirements;
Template should have enough loading strengths, rigidity and stability, the load that can bear new monolithc lining deadweight and wall pressure reliably and in construction process, produced;
Template should be simple in structure, mounting or dismounting are convenient, and be convenient to requirements such as lining cast, maintenance;
Template surface should be smooth, and piece is answered tight not spillage;
Template and support thereof are removed and should be adhered to specification, and when the no specific requirement of design, should meet following regulation:
A, side form (not bearing form) should can be removed when hard heat-insulating layer intensity can guarantee that its surface and corner angle are not damaged because of form removal;
B, bed die (bearing form) should reach 70% o'clock of design strength in hard heat-insulating layer intensity, can remove.
When the cast of hard heat-insulating layer adopts vibrator to vibrate, should meet following regulation:
Hard heat-insulating layer cast blanking continuously symmetrically, each blanking highly should not surpass 300mm;
Each vibrating time a little of shaking should make the hard heat-insulating laminar surface present laitance and no longer sinks;
When adopting poker vibrator, its moving interval:, should not be not less than 50mm greater than the degree of depth that vibrator inserts in the lower-layer concrete (hard heat-insulating layer) for wear resistance lining;
When adopting surface vibrator, its moving interval should guarantee that the flat board of vibrator can cover the edge of the part of jolt ramming;
When adopting form vibrator, it is provided with spacing should confirm through test, and closely is connected with template.
Every layer of template hard heat-insulating layer should not be filled with, and reserving is 50～100mm highly, treats to pour into a mould after upper former is installed again.
When continuing cast, should meet following regulation at the construction joint place:
The ultimate compression strength of the hard heat-insulating layer of having poured into a mould should be less than 1.5MPa;
When on the hard heat-insulating laminar surface that hardens, continuing cast, should remove in its surface resistates and loosening weak lining, and it is fully moistening to add water, and must not ponding.
During the thermofin construction, should meet following regulation:
When thermofin is smeared, should answer the tamping levelling simultaneously, reach surfacing with smearing with inspection hard heat-insulating layer thickness;
Finished product protection
Transport, lift to thermal treatment after the maintenance of hard heat-insulating layer, should take measures, avoid cracking.
The quality inspection of hard heat-insulating layer
Defectives such as liner surface should smooth, closely knit, no honeycomb, pitted skin, liner thickness permissible variation ± 5mm;
Knock inspection gently with the 0.5kg hand hammer, its sound answers clang real, clear and melodious, and hollowing sound does not have;
The surface crack width must not be greater than 5mm in the thermal treatment backsight, and the penetrability map cracking that do not have.
Interface starting material, construction proportioning, the maintenance process used with repairing the hard heat-insulating layer requires identical in the time of should constructing with former hard heat-insulating layer or adopts the fast drying repair material with material.
Spraying method is an ordinary method, repeats no more at this.
Below in conjunction with specific embodiment the present invention is described further.
Embodiment 1
Get the trade mark and be totally 1 kilogram of 625# high-alumina cement, particle diameter and be totally 2 kilograms of the macrobead pearlstones of 1.2～5mm, totally 3 kilograms of haydites that particle diameter is 1.2～5mm, totally 2 kilograms of vermiculites that particle diameter is 1.2～5mm, pearlstone that particle diameter is 1.2～3mm totally 6 kilograms stir, obtain 14 kilograms base-material.
In base-material, add 1.05 kilograms soft raw clay fine powder, 1.12 kilograms aluminum silicate fiber, 0.7 kilogram steel fiber and stir; The weight of soft raw clay fine powder is 7.5% of base-material; The weight of aluminum silicate fiber is 8% of base-material, and the weight of steel fiber is 5% of base-material.
In base-material, add soft raw clay fine powder, aluminum silicate fiber, steel fiber and stir after add water again and stir, obtain the thermofin slurry of directly buried pipeline Thermal insulative pipe carrier, can construct.
After the construction molding sclerosis, the high-temperature resistant of this Thermal insulative pipe carrier is 950～1000 ℃, and thermal conductivity is 0.16～0.2W/Mk, and compressive strength is 1.5～2.2MPa, and folding strength is 1.0～1.5MPa, and 110 ℃, 24h baking back volume density are 720～760kg/m
3
Embodiment 2
Get the trade mark and be totally 1 kilogram of 625# high-alumina cement, particle diameter and be totally 3 kilograms of the macrobead pearlstones of 1.2～5mm, totally 4 kilograms of haydites that particle diameter is 1.2～5mm, totally 3 kilograms of vermiculites that particle diameter is 1.2～5mm, pearlstone that particle diameter is 1.2～3mm totally 7 kilograms stir, obtain 17 in the base-material of gram.
In base-material, add 1.445 kilograms soft raw clay fine powder, 1.7 kilograms aluminum silicate fiber, 1.36 kilograms steel fiber and stir; The weight of soft raw clay fine powder is 8.5% of base-material; The weight of aluminum silicate fiber is 10% of base-material, and the weight of steel fiber is 8% of base-material.
In base-material, add soft raw clay fine powder, aluminum silicate fiber, steel fiber and stir after add water again and stir, obtain the thermofin slurry of directly buried pipeline Thermal insulative pipe carrier, can construct.
After the construction molding sclerosis, the high-temperature resistant of this Thermal insulative pipe carrier is 940～990 ℃, and thermal conductivity is 0.15～0.21W/Mk, and compressive strength is 1.6～2.1MPa, and folding strength is 1.1～1.4MPa, and 110 ℃, 24h baking back volume density are 725～755kg/m
3
Embodiment 3
Get the trade mark and be totally 1 kilogram of 625# high-alumina cement, particle diameter and be totally 2.5 kilograms of the macrobead pearlstones of 1.2～5mm, totally 3.5 kilograms of haydites that particle diameter is 1.2～5mm, totally 2.5 kilograms of vermiculites that particle diameter is 1.2～5mm, pearlstone that particle diameter is 1.2～3mm totally 6.5 kilograms stir, obtain 15 kilograms base-material.
In base-material, add 1.2 kilograms soft raw clay fine powder, 1.35 kilograms aluminum silicate fiber, 0.9 kilogram steel fiber and stir; The weight of soft raw clay fine powder is 8% of base-material; The weight of aluminum silicate fiber is 9% of base-material, and the weight of steel fiber is 6% of base-material.
In base-material, add soft raw clay fine powder, aluminum silicate fiber, steel fiber and stir after add water again and stir, obtain the thermofin slurry of directly buried pipeline Thermal insulative pipe carrier, can construct.
After the construction molding sclerosis, the high-temperature resistant of this Thermal insulative pipe carrier is 955～985 ℃, and thermal conductivity is 0.15～0.22W/Mk, and compressive strength is 1.4～1.9MPa, and folding strength is 1.2～1.6MPa, and 110 ℃, 24h baking back volume density are 715～765kg/m
3
Claims (6)
1. the thermofin dry powder of a directly buried pipeline Thermal insulative pipe carrier; It is characterized in that this thermofin dry powder comprises: base-material, soft raw clay fine powder or flyash, aluminium silicate fiber peacekeeping steel fiber; The weight of soft raw clay fine powder or flyash is 7.5%～8.5% of base-material; The weight of aluminum silicate fiber is 8%～10% of base-material, and the weight of steel fiber is 5%～8% of base-material;
Described base-material comprises high-alumina cement, macrobead pearlstone, haydite, vermiculite and pearlstone, and the weight ratio of high-alumina cement, macrobead pearlstone, haydite, vermiculite and pearlstone is 1: (2～3): (3～4): (2～3): (6～7).
2. the thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier as claimed in claim 1 is characterized in that: the particle diameter of said soft raw clay fine powder or flyash is 1.2～5mm.
3. the thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier as claimed in claim 1 is characterized in that: the particle diameter of said macrobead pearlstone is 1.2～5mm.
4. the thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier as claimed in claim 1 is characterized in that: the particle diameter of said haydite is 1.2～5mm.
5. the thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier as claimed in claim 1 is characterized in that: the particle diameter of said vermiculite is 1.2～5mm.
6. the thermofin dry powder of directly buried pipeline Thermal insulative pipe carrier as claimed in claim 1 is characterized in that: the particle diameter of said pearlstone is 1.2～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102968644A CN102442810A (en) | 2010-09-30 | 2010-09-30 | Dry powder of insulating layer of insulating pipe support of directly-buried pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102968644A CN102442810A (en) | 2010-09-30 | 2010-09-30 | Dry powder of insulating layer of insulating pipe support of directly-buried pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102442810A true CN102442810A (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102968644A Pending CN102442810A (en) | 2010-09-30 | 2010-09-30 | Dry powder of insulating layer of insulating pipe support of directly-buried pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277632A (en) * | 2013-06-03 | 2013-09-04 | 常州市武进武南管道设备有限公司 | Hard heat-insulating material |
| CN105042279A (en) * | 2015-07-09 | 2015-11-11 | 江苏中圣管道工程技术有限公司 | Heat-insulation block for a shock-resistance and heat-insulation pipe bracket and a manufacturing method |
| CN105114763A (en) * | 2015-09-22 | 2015-12-02 | 江苏中圣管道工程技术有限公司 | Low-energy-consumption and long-distance steam conveying device |
| CN108675732A (en) * | 2018-06-27 | 2018-10-19 | 常州优纳新材料科技有限公司 | A kind of conduit saddle heat-insulating heat-preserving material and preparation method thereof |
Citations (3)
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| CN1040574A (en) * | 1989-04-06 | 1990-03-21 | 中国石油化工隔热耐磨衬里工程公司 | Refractory materials as lining |
| CN1051033A (en) * | 1989-10-20 | 1991-05-01 | 湖北省襄樊市胶粘技术研究所 | Non-burning antifire light profile and manufacture method thereof |
| JP2754869B2 (en) * | 1990-05-29 | 1998-05-20 | 株式会社大林組 | Cold-resistant insulation spray material |
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2010
- 2010-09-30 CN CN2010102968644A patent/CN102442810A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040574A (en) * | 1989-04-06 | 1990-03-21 | 中国石油化工隔热耐磨衬里工程公司 | Refractory materials as lining |
| CN1051033A (en) * | 1989-10-20 | 1991-05-01 | 湖北省襄樊市胶粘技术研究所 | Non-burning antifire light profile and manufacture method thereof |
| JP2754869B2 (en) * | 1990-05-29 | 1998-05-20 | 株式会社大林組 | Cold-resistant insulation spray material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277632A (en) * | 2013-06-03 | 2013-09-04 | 常州市武进武南管道设备有限公司 | Hard heat-insulating material |
| CN103277632B (en) * | 2013-06-03 | 2015-08-12 | 常州市武进武南管道设备有限公司 | Hard heat-insulating thermal insulating material |
| CN105042279A (en) * | 2015-07-09 | 2015-11-11 | 江苏中圣管道工程技术有限公司 | Heat-insulation block for a shock-resistance and heat-insulation pipe bracket and a manufacturing method |
| CN105042279B (en) * | 2015-07-09 | 2018-02-13 | 江苏中圣管道工程技术有限公司 | Antivibration Thermal insulative pipe carrier heat insulation and manufacture method |
| CN105114763A (en) * | 2015-09-22 | 2015-12-02 | 江苏中圣管道工程技术有限公司 | Low-energy-consumption and long-distance steam conveying device |
| CN105114763B (en) * | 2015-09-22 | 2017-10-20 | 江苏中圣管道工程技术有限公司 | Steam low energy consumption long distance delivery device |
| CN108675732A (en) * | 2018-06-27 | 2018-10-19 | 常州优纳新材料科技有限公司 | A kind of conduit saddle heat-insulating heat-preserving material and preparation method thereof |
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Application publication date: 20120509 |