CN204717237U - A kind of phase-change energy-storing heat preservation pipeline - Google Patents
A kind of phase-change energy-storing heat preservation pipeline Download PDFInfo
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- CN204717237U CN204717237U CN201520423982.5U CN201520423982U CN204717237U CN 204717237 U CN204717237 U CN 204717237U CN 201520423982 U CN201520423982 U CN 201520423982U CN 204717237 U CN204717237 U CN 204717237U
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Abstract
The utility model discloses a kind of phase-change energy-storing heat preservation pipeline.The utility model comprises interior conduit and Outer Tube, and interior conduit is set within Outer Tube, and is connected by the flange seal at its two ends; Described Outer Tube is provided with two filler lines, and one of them filler line is provided with one-way valve, and another filler line mouth of pipe is provided with plugging pipe cap; Phase-change material is full of in space between inside and outside pipeline; So, form the phase-change energy-storing heat preservation pipeline of the semi-enclosed double-decked insulation of segmentation, each segment pipe is interconnected by the flange of its end.The utility model utilizes phase-change material in phase transition process, absorb or discharge sizable latent heat and the almost constant principle of self temperature, thus the temperature difference reduced between hot environment and medium, effectively reduce the phase-change energy-storing heat preservation pipeline of cold (heat) amount loss in defeated cold (heat) process.
Description
Technical field
The utility model belongs to pipeline heat-insulating technology field, is specifically related to a kind of phase-change energy-storing heat preservation pipeline.
Background technique
At present, in each large office building of China, store, subway station even mine cooling, mostly centralized heat supply and central air-conditioning system is adopted.The load of centralized heat supply and air-conditioning system and area (or radius) all larger, medium conveying distance longer, along Cheng Leng (heat) amount lose larger.
Pipeline cold (heat) loss of China's Heating,Ventilating and Air Conditioning (HVAC) industry accounts for 7.5% one 8% of whole cooling (heat) system energy consumption.Heat distribution pipeline and equipment are after taking cold insulation (temperature), and cold (heat) loss can greatly reduce.In addition, after equipment and pipeline adopt good Insulation and material, also can reduce energy consumption and cost, environmental protect, have good economic benefit simultaneously, the investment about a year being generally used for thermal insulating material can be regained by the energy saved.So carrying out insulation to heat distribution pipeline and equipment is reduce system energy consumption, realize energy-conservation the most directly, most effective measures.
At present, many countries are all carrying out defeated heat (cold) heat insulation structure and research that is heat insulation, moisture barrier material, and they require that the thermal-protective material of defeated heat (cold) pipeline must have the characteristic feature that thermal conductivity is little and water resistance is strong.For reaching this object, people adopt special chemical technology, cause the heat transfer condition of " stationary gas " in the material that can foam, and by the little gas collection of thermal conductivity in the closed trickle mesh of material, prevent from being conducted heat by gaseous exchange.Many foamed plastics all have this performance, and conventional insulation (cold) material has: polystyrene, polyethylene, polyurethane etc.At insulation (cold) pipeline configuration design aspect, the defeated cold pipeline of many mines generally adopts polystyrene foam plastics to make the heat insulation shell of semi-cylindrical type, be wound around wrapping with the glass fibre cloth of kiss-coating, now part is used instead and is poured into a mould RPUF etc. between inner and outer pipes and make thermal-protective coating.
All there is following problem in above-mentioned technology: (1) complex structure; (2) construction is inconvenient, and because insulation pipe needs to adopt multilayer to lay, and require strict for work progress, construction is got up more difficult; (3) maintenance difficult, for conventional vacuum pipeline, needs all thermal insulation layers of dismantling, adds workload to maintenance during maintenance; (4) thermal insulating material is easily aging, and heat insulation effect is poor; (5) working life is shorter.
Summary of the invention
The purpose of this utility model is for there is above-mentioned defect in prior art, thering is provided a kind of utilizes phase-change material in phase transition process, absorb or discharge sizable latent heat and the almost constant principle of self temperature, thus the temperature difference reduced between hot environment and medium, effectively reduce the phase-change energy-storing heat preservation pipeline of cold (heat) amount loss in defeated cold (heat) process.
The utility model object realizes by the following technical solutions: this phase-change energy-storing heat preservation pipeline, and it comprises interior conduit and Outer Tube, and interior conduit is set within Outer Tube, and is connected by the flange seal at its two ends; On described Outer Tube, homonymy is provided with two filler lines near the position of two end flange, and one of them filler line is provided with one-way valve, and another filler line mouth of pipe is provided with plugging pipe cap; Phase-change material is full of in space between inside and outside pipeline; So, form the phase-change energy-storing heat preservation pipeline of the semi-enclosed double-decked insulation of segmentation, each segment pipe is interconnected by the flange of its end.
Concrete, described interior conduit, Outer Tube and flange are metallic material and make.
Concrete, described end face of flange is the male and female flange of heavy convex two steps.
Further, described interior conduit adopts seamless steel pipe, inserts in the heavy mouth of male and female flange, and with being welded to connect; Described Outer Tube adopts two pieces of semi-circular sheet steel butt welding to form, and is welded on the outer convex surface step of male and female flange.
Phase-change energy-storing heat preservation pipeline of the present utility model; integrate thermal insulation layer, vapor barrier, protective layer, flame-retardant layer; both be incubated; moisture resistance, fire-retardant, not fragile again; effectively can stop the infiltration of water and steam; do not affect the performance of thermal insulation layer, effectively reduce pipeline cold (heat) the amount loss of cold (heat) matchmaker long distance delivery in cooling (heat) system.And phase-change material between inside and outside pipeline absorb be increased to fusing point after heat in external temperature or pipe time, produce phase transformation, absorb and store a large amount of latent heat, stop heat to invade interior pipe to a certain extent.When temperature is higher than phase transition temperature, the heat that phase-change material stores is discharged in medium in certain temperature range, carries out reverse transformation process.In these two kinds of phase transition process, energy that is stored or release is latent heat of phase change.Although physical state changes, the temperature of material self almost remains unchanged before phase transformation completes, and forms a wider temperature platform.Phase-change material, while absorption or release latent heat, reduces the hot-fluid fluctuation between environment and medium, thus reduces the temperature difference of medium and external environment in pipe, effectively reduces the loss of cold (heat) amount.
Phase-change energy-storing heat preservation pipeline of the present utility model; integrate phase-change material layers (thermal insulation layer), vapor barrier, protective layer, flame-retardant layer, be the closed cold insulation structure of a kind of segmentation, multiple raw material can be saved; save construction sequence, be also convenient to transport, install, dismantle.
Be summed up, the utility model compared with prior art, has the advantage of the following aspects:
(1) the utility model integrates thermal insulation layer, vapor barrier, protective layer, flame-retardant layer, and structure is simple, saves material, and production technology is simple, saves plenty of time and labour force;
(2) the utility model was both incubated, moisture resistance, fire-retardant, not fragile again, effectively can stop the infiltration of water and steam, not affect thermal insulation property, effectively reduced the loss of refrigeration capacity in defeated cold process, and long service life.
(3) the utility model is the semi-enclosed double-deck cold insulation pipeline of a kind of segmentation, by Flange joint between pipeline, is conducive to transport and installs, easy construction;
(4) the utility model utilizes phase-change material absorb in phase transition process or discharge a large amount of latent heat, and the principle that the temperature of self is almost constant, decrease the temperature difference between environment and medium, effectively reduce cold (heat) amount loss in defeated cold (heat) process.
Accompanying drawing explanation
Fig. 1 is the local delamination surface structure schematic diagram of the utility model phase-change energy-storing heat preservation pipeline.
Fig. 2 is the axial section of the utility model phase-change energy-storing heat preservation pipeline.
Fig. 3 is the end face sectional view of the utility model phase-change energy-storing heat preservation pipeline.
Fig. 4 is the structural representation of flange of the present utility model.
Fig. 5 is the sectional drawing of flange of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
See Fig. 1 to Fig. 3, the utility model embodiment comprises inner metal tube road 1 and outer metallic conduit 2, and inner metal tube road 1 is set within outer metallic conduit 2, and is connected by metal flange 4 sealing at its two ends.On outer metallic conduit 2, homonymy is provided with two filler lines 5,6 near the position of two end flange, and wherein, filler line 6 is provided with one-way valve 7, and the mouth of pipe of another filler line 5 is provided with plugging pipe cap (not shown in FIG.); Phase-change material 8 is full of in space between inner metal tube road 1 and outer metallic conduit 2; So, form the phase-change energy-storing heat preservation pipeline of the semi-enclosed double-decked insulation of segmentation, each segment pipe is interconnected by the metal flange 4 of its end.
See Fig. 4 to Fig. 5, metal flange 4 adopts male and female flange (a heavy boss flange).Go out a circle with conventional flange unlike cars many on convex flange and sink mouth, metallic conduit 1 is welded in the heavy mouth of metal flange 4, and metallic conduit 2 is welded on the outer convex surface step of metal flange 4.The designing requirement of metal flange 4 is: flange sinks the width (D2-D1) of mouth slightly larger than the wall thickness of metallic conduit 1, and D1 equals the internal diameter of metallic conduit 1; The outer diameter D 4 of flange convex surface step is slightly less than the internal diameter of metallic conduit 2.Metallic conduit 1 adopts seamless steel pipe, and metallic conduit 2 adopts two pieces of semi-circular sheet steel butt welding to form, and meets protected from moisture.In addition, metal flange 4 need carry out isothermal holding.
Phase-change material 8 should have following characteristics: fire prevention is not fired, durability is strong, safe and reliable, nontoxic, easy construction etc.When filled phase-change material, first be liquid by phase-change material heating and melting, by insulation pipe slant setting in ground, wherein one end is higher than the distance of the Altitude control H (1-2 times of pipe diameter) in the horizontal plane of the other end, the low side filler line (be provided with the filler line 6 of one-way valve 7) of liquid state phase change material from cylindrical shell pipeline is injected, after high-end filler line (being provided with the filler line 5 of plugging pipe cap) mouth of pipe overflowing liquid, stop filling, after cooling under insulation pipe being placed in low temperature environment, filler line 5 is sealed with plugging pipe cap.
When pipeline is used for heating agent transport, the heat of medium in phase-change material absorption tube, temperature is increased to phase transition temperature gradually, and phase-change material becomes liquid state from solid-state, stores a large amount of latent heat, but temperature to remain on phase transition temperature constant.When temperature is higher than phase transition temperature, the cold in phase-change material absorbing environmental, phase-change material discharges latent heat of phase change in certain temperature range, and phase-change material carries out reverse transformation process, and phase is become solid-state from liquid state.In like manner, when pipeline is used for refrigerant transport, phase-change material absorbs the heat in surrounding environment, and temperature is increased to phase transition temperature gradually, and the phase of phase-change material becomes liquid state from solid-state, stores a large amount of latent heat, but temperature to remain on phase transition temperature constant.When to flow through temperature in metallic conduit 1 be the chilled water of 5 ~ 7 DEG C, phase-change material discharges latent heat of phase change in certain temperature range, and phase-change material carries out reverse transformation process, and phase is become solid-state from liquid state.
In whole process, although physical state changes, the temperature of material self almost remains unchanged before phase transformation completes, and forms a wider temperature platform.Phase-change material, while absorption or release latent heat, reduces the hot-fluid fluctuation between environment and medium, thus reduces temperature drop or the temperature rise of medium in pipe, effectively reduce the energy loss in cold (heat) matchmaker course of conveying.Can be used for the long distance high-efficient conveying of cold (heat) matchmaker.
Claims (4)
1. a phase-change energy-storing heat preservation pipeline, is characterized in that: it comprises interior conduit and Outer Tube, and interior conduit is set within Outer Tube, and is connected by the flange seal at its two ends; On described Outer Tube, homonymy is provided with two filler lines near the position of two end flange, and one of them filler line is provided with one-way valve, and another filler line mouth of pipe is provided with plugging pipe cap; Phase-change material is full of in space between inside and outside pipeline; So, form the phase-change energy-storing heat preservation pipeline of the semi-enclosed double-decked insulation of segmentation, each segment pipe is interconnected by the flange of its end.
2. phase-change energy-storing heat preservation pipeline according to claim 1, is characterized in that: described interior conduit, Outer Tube and flange are metallic material and make.
3. phase-change energy-storing heat preservation pipeline according to claim 2, is characterized in that: described end face of flange is the male and female flange of heavy convex two steps.
4. phase-change energy-storing heat preservation pipeline according to claim 3, is characterized in that: described interior conduit adopts seamless steel pipe, inserts in the heavy mouth of male and female flange, and with being welded to connect; Described Outer Tube adopts two pieces of semi-circular sheet steel butt welding to form, and is welded on the outer convex surface step of male and female flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423982.5U CN204717237U (en) | 2015-06-18 | 2015-06-18 | A kind of phase-change energy-storing heat preservation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423982.5U CN204717237U (en) | 2015-06-18 | 2015-06-18 | A kind of phase-change energy-storing heat preservation pipeline |
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| Publication Number | Publication Date |
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| CN204717237U true CN204717237U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520423982.5U Expired - Fee Related CN204717237U (en) | 2015-06-18 | 2015-06-18 | A kind of phase-change energy-storing heat preservation pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033850A (en) * | 2017-04-28 | 2017-08-11 | 北京中世佳恒环保科技有限公司 | Fiber composite phase-changing energy storage material, pipeline and preparation method thereof as made from the material |
| CN107448696A (en) * | 2017-09-12 | 2017-12-08 | 丹阳市丹达防腐设备有限公司 | A kind of anticorrosion composite pipe with cooling effect |
-
2015
- 2015-06-18 CN CN201520423982.5U patent/CN204717237U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033850A (en) * | 2017-04-28 | 2017-08-11 | 北京中世佳恒环保科技有限公司 | Fiber composite phase-changing energy storage material, pipeline and preparation method thereof as made from the material |
| CN107033850B (en) * | 2017-04-28 | 2020-04-28 | 北京中世佳恒环保科技有限公司 | Fiber composite phase change energy storage material, pipeline made of material and manufacturing method of pipeline |
| CN107448696A (en) * | 2017-09-12 | 2017-12-08 | 丹阳市丹达防腐设备有限公司 | A kind of anticorrosion composite pipe with cooling effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20180618 |