CN103104785A - Inner fixing knot arranged on 200 DEG C direct burial heat supply pipeline and used for preventing heat bridge from transferring heat - Google Patents
Inner fixing knot arranged on 200 DEG C direct burial heat supply pipeline and used for preventing heat bridge from transferring heat Download PDFInfo
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- CN103104785A CN103104785A CN2013100504047A CN201310050404A CN103104785A CN 103104785 A CN103104785 A CN 103104785A CN 2013100504047 A CN2013100504047 A CN 2013100504047A CN 201310050404 A CN201310050404 A CN 201310050404A CN 103104785 A CN103104785 A CN 103104785A
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- heat
- epoxy resin
- novolac epoxy
- steel pipe
- retaining ring
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Abstract
The invention discloses an inner fixing knot arranged on a 200 DEG C direct burial heat supply pipeline and used for preventing a heat bridge from transferring heat. The problem that a heat bridge effect easily happens in an existing fixing knot of a direct burial type steam pipeline is solved. A heat transferring steel pipe (1) is placed inside an external guard steel pipe (4), an external fixing ring (5) is placed on the inner side wall of the external guard steel pipe (4), an aluminum silicate lining (10) is arranged between the external fixing ring (5) and the heat transferring steel pipe (1), an internal fixing ring (6) is arranged on the outer side wall of the heat transferring steel pipe (1), an internal fixing ring reinforcing rib (7) is placed between the internal fixing ring (6) and the outer side wall of the heat transferring steel pipe (1), a high-strength heat insulation novolac epoxy annulus gasket (9) is arranged between the external fixing ring (5) and the internal fixing ring (6), and an aluminum foil reflecting film (8) is placed between the high-strength heat insulation novolac epoxy annulus gasket (9) and the internal fixing ring (6). Strength and heat insulation effects of the inner fixing knot of the direct burial heat supply pipeline are improved.
Description
Technical field
The present invention relates to a kind of inner fixed support of directly buried type heat supply pipeline, particularly a kind of fixed knot of heat supply pipeline of the partition heat transmission that arranges in the external protective steel tube of heat supply pipeline.
Background technique
at present, the high-strength heat isolating material that uses between the steam steel pipe of the fixed knot of directly buried type steam line and fixed dam is the asbestos rubber pad, this asbestos rubber pad is under the acting in conjunction of high temperature and pipe stress, very easily produce aging and powdered, in case after the aging and powdered of asbestos rubber pad, produce the heat bridge transport phenomenon between the outer retaining ring that will arrange in the fixed dam of steam line and external protective steel tube, make the hull-skin temperature of outer pillar increase rapidly, cause a large amount of losses of steam heat, also can occur when serious running, emit, drip, the phenomenons such as leakage, had influence on the transporting of safety economy of steam.
Summary of the invention
The invention provides a kind of Internally fixed node that stops 200 ℃ of Direct-Buried Heating Pipelines of heat bridge transmission, the technical problem of heat bridge phenomenon easily appears in the fixed knot that has solved existing directly buried type steam line.
The present invention solves above technical problem by the following technical programs:
a kind of Internally fixed node that stops 200 ℃ of Direct-Buried Heating Pipelines of heat bridge transmission, comprise external protective steel tube and hot conveying steel pipe, hot conveying steel pipe is arranged in external protective steel tube, be provided with thermal insulation layer and air layer between hot conveying steel pipe and external protective steel tube, be provided with outer retaining ring on the madial wall of external protective steel tube, be provided with the alumina silicate liner between retaining ring and hot conveying steel pipe outside, be provided with interior retaining ring on the outer side wall of hot conveying steel pipe, be provided with interior retaining ring stiffening rib between the outer side wall of interior retaining ring and hot conveying steel pipe, be provided with outside high-strength heat-insulation novolac epoxy resin annulus pad between retaining ring and interior retaining ring, be provided with the aluminium foil reflecting coating between high-strength heat-insulation novolac epoxy resin annulus pad and interior retaining ring.
Described high-strength heat-insulation novolac epoxy resin annulus pad is formed by the compacting of high-strength heat-insulation novolac epoxy resin composition, described high-strength heat-insulation novolac epoxy resin composition, with 100 weight portion weighing scales, contain following material: the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part.
Described novolac epoxy resin is 65-75 part, and described glass fiber is 20-30 part, and described microporous calcium silicate is 5-8 part, and described curing agent is 2-3 part, and described promoter is 2-3 part.
The preparation method of high-strength heat-insulation novolac epoxy resin composition comprises the following steps:
The first step, with 100 weight portion weighing scales, get the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part;
Second step, the novolac epoxy resin of 60-80 part and the microporous calcium silicate of 2-10 part are put into stirrer, stir it is mixed;
In the 3rd step, novolac epoxy resin and microporous calcium silicate mixture that promoter the joining of the curing agent of 1-3 part and 1-3 part mixed, stir;
The 4th step: the glass fiber of 15-30 part is immersed in above mixture, heated 20 minutes, make the temperature of mixture reach 120 ℃-130 ℃, then pressurization makes mixture solidified, namely obtains high-strength heat-insulation novolac epoxy resin composition.
High-strength heat-insulation novolac epoxy resin annulus pad of the present invention has been blocked by the steam steel pipe to the heat bridge transmission that forms between external protective steel tube, make the temperature of external protective steel tube lower than 50 ℃, greatly improve intensity and the effect of heat insulation of the Internally fixed node of directly buried type heat supply pipeline, improved the transmission efficiency of heat energy.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
a kind of Internally fixed node that stops 200 ℃ of Direct-Buried Heating Pipelines of heat bridge transmission, comprise external protective steel tube 4 and hot conveying steel pipe 1, hot conveying steel pipe 1 is arranged in external protective steel tube 4, be provided with thermal insulation layer 2 and air layer 3 between hot conveying steel pipe 1 and external protective steel tube 4, be provided with outer retaining ring 5 on the madial wall of external protective steel tube 4, be provided with alumina silicate liner 10 between retaining ring 5 and hot conveying steel pipe 1 outside, be provided with interior retaining ring 6 on the outer side wall of hot conveying steel pipe 1, be provided with interior retaining ring stiffening rib 7 between the outer side wall of interior retaining ring 6 and hot conveying steel pipe 1, be provided with outside high-strength heat-insulation novolac epoxy resin annulus pad 9 between retaining ring 5 and interior retaining ring 6, be provided with aluminium foil reflecting coating 8 between high-strength heat-insulation novolac epoxy resin annulus pad 9 and interior retaining ring 6.
Described high-strength heat-insulation novolac epoxy resin annulus pad 9 is formed by the compacting of high-strength heat-insulation novolac epoxy resin composition, described high-strength heat-insulation novolac epoxy resin composition, with 100 weight portion weighing scales, contain following material: the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part.
With 100 weight portion weighing scales, described novolac epoxy resin is 65-75 part, and described glass fiber is 20-30 part, and described microporous calcium silicate is 5-8 part, and described curing agent is 2-3 part, and described promoter is 2-3 part.
The preparation method of high-strength heat-insulation novolac epoxy resin composition comprises the following steps:
The first step, with 100 weight portion weighing scales, get the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part;
Second step, the novolac epoxy resin of 60-80 part and the microporous calcium silicate of 2-10 part are put into stirrer, stir it is mixed;
In the 3rd step, novolac epoxy resin and microporous calcium silicate mixture that promoter the joining of the curing agent of 1-3 part and 1-3 part mixed, stir;
The 4th step: the glass fiber of 15-30 part is immersed in above mixture, heated 20 minutes, make the temperature of mixture reach 120 ℃-130 ℃, then pressurization makes mixture solidified, namely obtains high-strength heat-insulation novolac epoxy resin composition.
when the medium steam in hot conveying steel pipe 1 is flowed through fixed knot, can be with the interior retaining ring 6 of heat by arranging on the outer side wall of hot conveying steel pipe 1, high-strength heat-insulation novolac epoxy resin annulus pad 9 and being delivered on external protective steel tube 4 at the outer retaining ring 5 that arranges on the madial wall of external protective steel tube 4, because high-strength heat-insulation novolac epoxy resin annulus pad 9 has good heat-blocking action, can greatly reduce the heat transmission in above-mentioned path, alumina silicate liner 10 is filled in the gap between high-strength heat-insulation novolac epoxy resin annulus pad 9 and hot conveying steel pipe 1, the surface temperature that has guaranteed external protective steel tube 4 is no more than 50 ℃, make the external protective steel tube can be not too high because of hull-skin temperature, cause localized stress excessive and damage.
When the medium steam in hot conveying steel pipe 1 flows, hot conveying steel pipe 1 is with expanded by heating, make the interior retaining ring 6 and interior retaining ring stiffening rib 7 displacements that arrange on the outer side wall of hot conveying steel pipe 1, thereby extruding high-strength heat-insulation novolac epoxy resin annulus pad 9 and the outer retaining ring 5 that arranges on the madial wall of external protective steel tube 4, close to tensile strength and the compressive strength of steel plate, therefore can satisfy the fixed knot force request due to the tensile strength of high-strength heat-insulation novolac epoxy resin annulus pad 9 and compressive strength.
Organic thermal-protective material has advantages of that thermal conductivity is low and higher than Compressive Strength, be the ideal material of making high-strength heat isolating material, but the heatproof of organic thermal-protective material is lower, can not be directly used in the heat insulated support of high temperature heat supply pipeline; And thermal insulation inorganic material has resistant to elevated temperatures advantage, but has the large shortcoming of water absorption rate; The present invention is the advantages with two class materials, forms the thermal-protective material of inorganic organic composite structure, can obtain heatproof high, heat-insulating efficiency height and the high effect of intensity.According to above-mentioned requirements, the present invention adopts novolac epoxy resin as body material, adds reinforcing fiber and contains the strengthening agent of silicate composition, by adjusting each composition proportion, consists of a kind of novolac epoxy resin based composite heat insulation material.
Through laboratory test, the physical property of high-strength heat-insulation novolac epoxy resin material of the present invention is as follows:
1, the intensity variation with temperature of high-strength heat-insulation novolac epoxy resin composition of the present invention sees the following form:
| Temperature (℃) | Room temperature | 100 | 150 | 200 |
| Tensile strength sigma b（MPa） | 350-420 | 200-240 | 190-210 | 120-160 |
| Compressive strength σ bc（MPa） | 160-230 | 110-130 | 90-120 | 80-100 |
2, the thermal conductivity of high-strength heat-insulation novolac epoxy resin composition of the present invention sees the following form:
| Temperature (℃) | 80? | 120 | 150 | 180 |
| Thermal conductivity (w/m.K) | 0.315 | 0.327 | 0.336 | 0.342 |
3, the linear expansion coefficient variation with temperature situation of high-strength heat-insulation novolac epoxy resin composition of the present invention sees the following form:
High-strength heat-insulation novolac epoxy resin composition of the present invention can be applicable to medium temperature and on fixing and sliding support, is made into the high-strength heat-insulation bearing more than or equal to the pipeline of 200 ℃, has blocked by working steel tube to the heat loss between support of pipelines.The present invention has also provided mechanical characteristic and the heat preservation property index of high-strength heat-insulation novolac epoxy resin composition first quantitatively.The working life of high-strength heat-insulation novolac epoxy resin annulus pad 9 of the present invention is identical with the working life of hot conveying steel pipe, mechanical property of the present invention and Q235B steel plate approach, excellent thermal insulation performance of the present invention is high-intensity thermal-protective material desirable in pipe support.
Claims (4)
1. Internally fixed node that stops 200 ℃ of Direct-Buried Heating Pipelines that heat bridge transmits, comprise external protective steel tube (4) and hot conveying steel pipe (1), hot conveying steel pipe (1) is arranged in external protective steel tube (4), be provided with thermal insulation layer (2) and air layer (3) between hot conveying steel pipe (1) and external protective steel tube (4), be provided with outer retaining ring (5) on the madial wall of external protective steel tube (4), be provided with alumina silicate liner (10) between retaining ring (5) and hot conveying steel pipe (1) outside, be provided with interior retaining ring (6) on the outer side wall of hot conveying steel pipe (1), be provided with interior retaining ring stiffening rib (7) between the outer side wall of interior retaining ring (6) and hot conveying steel pipe (1), it is characterized in that, be provided with high-strength heat-insulation novolac epoxy resin annulus pad (9) between retaining ring (5) and interior retaining ring (6) outside, be provided with aluminium foil reflecting coating (8) between high-strength heat-insulation novolac epoxy resin annulus pad (9) and interior retaining ring (6).
2. a kind of Internally fixed node that stops 200 ℃ of Direct-Buried Heating Pipelines that heat bridge transmits according to claim 1, it is characterized in that, described high-strength heat-insulation novolac epoxy resin annulus pad (9) is formed by the compacting of high-strength heat-insulation novolac epoxy resin composition, described high-strength heat-insulation novolac epoxy resin composition, with 100 weight portion weighing scales, contain following material: the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part.
3. a kind of Internally fixed node that stops 200 ℃ of Direct-Buried Heating Pipelines that heat bridge transmits according to claim 2, it is characterized in that, described novolac epoxy resin is 65-75 part, described glass fiber is 20-30 part, described microporous calcium silicate is 5-8 part, described curing agent is 2-3 part, and described promoter is 2-3 part.
4. a kind of Internally fixed node that stops 200 ℃ of Direct-Buried Heating Pipelines of heat bridge transmission according to claim 2, is characterized in that, the preparation method of high-strength heat-insulation novolac epoxy resin composition comprises the following steps:
The first step, with 100 weight portion weighing scales, get the novolac epoxy resin of 60-80 part, the glass fiber of 15-30 part, the microporous calcium silicate of 2-10 part, the curing agent of 1-3 part, the promoter of 1-3 part;
Second step, the novolac epoxy resin of 60-80 part and the microporous calcium silicate of 2-10 part are put into stirrer, stir it is mixed;
In the 3rd step, novolac epoxy resin and microporous calcium silicate mixture that promoter the joining of the curing agent of 1-3 part and 1-3 part mixed, stir;
The 4th step: the glass fiber of 15-30 part is immersed in above mixture, heated 20 minutes, make the temperature of mixture reach 120 ℃-130 ℃, then pressurization makes mixture solidified, namely obtains high-strength heat-insulation novolac epoxy resin composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100504047A CN103104785A (en) | 2013-02-11 | 2013-02-11 | Inner fixing knot arranged on 200 DEG C direct burial heat supply pipeline and used for preventing heat bridge from transferring heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100504047A CN103104785A (en) | 2013-02-11 | 2013-02-11 | Inner fixing knot arranged on 200 DEG C direct burial heat supply pipeline and used for preventing heat bridge from transferring heat |
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| Publication Number | Publication Date |
|---|---|
| CN103104785A true CN103104785A (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100504047A Pending CN103104785A (en) | 2013-02-11 | 2013-02-11 | Inner fixing knot arranged on 200 DEG C direct burial heat supply pipeline and used for preventing heat bridge from transferring heat |
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| CN (1) | CN103104785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508814A (en) * | 2016-02-23 | 2016-04-20 | 江苏明江机械制造有限公司 | Prefabricated nano thermal-insulation fixing support of buried steam pipe |
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| CN2694149Y (en) * | 2004-03-26 | 2005-04-20 | 康凤雷 | External heat insulation type inner fixing holder |
| CN2864308Y (en) * | 2005-12-30 | 2007-01-31 | 宁波万里管道有限公司 | Stationary barrier for direct-burried thermal insulation pipe |
| CN2898543Y (en) * | 2006-03-28 | 2007-05-09 | 北京市鼎超供热管有限公司 | Antifreezing bridging slide stand of steel jacket pipeline |
| CN2898542Y (en) * | 2006-03-28 | 2007-05-09 | 北京市鼎超供热管有限公司 | Internal and external fixed joint of steam directed-buried pipeline |
| CN201184481Y (en) * | 2008-03-06 | 2009-01-21 | 山东鼎超供热设备有限公司 | Composite heat preservation structure of prefabricated direct-buried steam pipeline |
| CN102796349A (en) * | 2012-08-27 | 2012-11-28 | 黑龙江省科学院石油化学研究院 | Membranous room-temperature-curing epoxy resin composite material gasket and preparation method thereof |
| CN202660159U (en) * | 2012-05-30 | 2013-01-09 | 北京豪特耐管道设备有限公司 | Prefabricated directly-buried high-temperature steam pipe fixing bracket |
| CN102875977A (en) * | 2012-09-20 | 2013-01-16 | 常熟市永祥机电有限公司 | Preparation method of flame-retardant phenolic epoxy composite material |
| CN203147169U (en) * | 2013-02-11 | 2013-08-21 | 中国能源建设集团山西省电力勘测设计院 | Internal fixing knot arranged on 200 DEG C direct burial heat supply pipeline and used for preventing heat bridge from transferring heat |
-
2013
- 2013-02-11 CN CN2013100504047A patent/CN103104785A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694149Y (en) * | 2004-03-26 | 2005-04-20 | 康凤雷 | External heat insulation type inner fixing holder |
| CN2864308Y (en) * | 2005-12-30 | 2007-01-31 | 宁波万里管道有限公司 | Stationary barrier for direct-burried thermal insulation pipe |
| CN2898543Y (en) * | 2006-03-28 | 2007-05-09 | 北京市鼎超供热管有限公司 | Antifreezing bridging slide stand of steel jacket pipeline |
| CN2898542Y (en) * | 2006-03-28 | 2007-05-09 | 北京市鼎超供热管有限公司 | Internal and external fixed joint of steam directed-buried pipeline |
| CN201184481Y (en) * | 2008-03-06 | 2009-01-21 | 山东鼎超供热设备有限公司 | Composite heat preservation structure of prefabricated direct-buried steam pipeline |
| CN202660159U (en) * | 2012-05-30 | 2013-01-09 | 北京豪特耐管道设备有限公司 | Prefabricated directly-buried high-temperature steam pipe fixing bracket |
| CN102796349A (en) * | 2012-08-27 | 2012-11-28 | 黑龙江省科学院石油化学研究院 | Membranous room-temperature-curing epoxy resin composite material gasket and preparation method thereof |
| CN102875977A (en) * | 2012-09-20 | 2013-01-16 | 常熟市永祥机电有限公司 | Preparation method of flame-retardant phenolic epoxy composite material |
| CN203147169U (en) * | 2013-02-11 | 2013-08-21 | 中国能源建设集团山西省电力勘测设计院 | Internal fixing knot arranged on 200 DEG C direct burial heat supply pipeline and used for preventing heat bridge from transferring heat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508814A (en) * | 2016-02-23 | 2016-04-20 | 江苏明江机械制造有限公司 | Prefabricated nano thermal-insulation fixing support of buried steam pipe |
| CN105508814B (en) * | 2016-02-23 | 2018-08-10 | 江苏明江机械制造有限公司 | Prefabricated direct-buried jet chimney nano heat-insulating fixing bracket |
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Application publication date: 20130515 |