CN105697919B - One kind is used for SiCl4The pipeline configuration of steam conveying - Google Patents
One kind is used for SiCl4The pipeline configuration of steam conveying Download PDFInfo
- Publication number
- CN105697919B CN105697919B CN201610224841.XA CN201610224841A CN105697919B CN 105697919 B CN105697919 B CN 105697919B CN 201610224841 A CN201610224841 A CN 201610224841A CN 105697919 B CN105697919 B CN 105697919B
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- Prior art keywords
- tubular bracket
- delivery pipe
- resistance wire
- bellows
- sicl
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Classifications
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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
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/32—Heating of pipes or pipe systems using hot fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a kind of for SiCl4The pipeline configuration of steam conveying is externally wrapped with the bellows being set on the outside of the tubular bracket and tubular bracket of resistance wire including delivery pipe and delivery pipe；Silicone oil is filled between the bellows and the tubular bracket and between the tubular bracket and the delivery pipe, the tubular bracket is equipped with several through-holes for silicone oil flowing；Insulating layer is equipped on the outside of the bellows, protective layer is equipped on the outside of the insulating layer.The tubular bracket is evenly distributed with the tetrafluoroethene pipe of several through-holes using surface.The internal diameter of the tubular bracket 1 5mm bigger than the outer diameter of the delivery pipe.Resistance wire is wrapped on tubular bracket, is effectively isolated with delivery pipe, resistance wire is avoided directly to be contacted with metallic conduit, the filling silicon oil between bellows and delivery pipe simultaneously, delivery pipe is heated in the form of oil bath so that delivery pipe temperature distribution evenness is substantially improved, and service life is longer.
Description
Technical field
The invention belongs to the research and development of light prefabricated rods and manufacturing technology field, is used for more particularly, to one kind
SiCl4The pipeline configuration of steam conveying.
Background technology
At present, in preform manufacturing field, there are mainly two types of most common preparation methods：VAD (vapor axials
Deposition) and OVD (Outside Vapor deposition).Both methods is all by imflammable gas (H2Or CH4), combustion-supporting property gas (O2)、
Reaction gas (SiCl4) and doping property gas (GeCl4、 CF4、PCl5Deng) be passed into blowtorch and blowtorch outlet and near
Zonal combustion then by flame hydrolysis, generates SiO2Particle.These SiO2Granular absorption forms white circular in target rod
Columnar loosening body after dehydration, sintering, can obtain vitreous preform.Based on above-mentioned preparation original
Reason, it is known that SiCl4It is the indispensable raw material of fiber manufacturing industry.
Due to SiCl4With volatile, facile hydrolysis generation highly acid gas HCl, irritation is strong, pollutes environment, influences people
Body health, so to SiCl4Steam conveying equipment it is more demanding.SiCl4Boiling point at 57.6 DEG C, while in order to obtain enough
Big SiCl4Gas pressure, the temperature of general vapo(u)rization system is higher than boiling point, about 80 DEG C.To prevent gas in transmission process
There is liquid condensation, the temperature of conveyance conduit, outline is higher than the temperature of vapo(u)rization system, generally at 90 DEG C or more.Meanwhile
SiCl4Steam convey during, it is desirable that conveyance conduit uniformity of temperature profile and stabilization, otherwise easily lead to gas partial condensation with
And torch flame bounce, and then influence the quality of prefabricated rods.This requires SiCl4Gas transmission pipeline can not only bear higher
Temperature, while also there is good temperature uniformity and stability.
Domestic SiCl at present4Gas transmission pipeline structure is relatively easy, general to wind one using in the outside of metal tube
It is prepared by layer resistance wire, the method for then wrapping up in deposited one layer of heat preservation cotton on the outside again.This SiCl4There are following several for gas transmission pipeline
A shortcoming：
1. poor temperature uniformity.Conventional SiCl4Gas transmission pipeline, the density of resistance wire ring winding are different (especially
Pipeline occur being bent or turning in the case of), while there are gaps between coil, easily lead to pipeline Axial-running Out current situation portion temperature
Too high or too low situation is spent, easily leads to that temperature distribution is non-uniform.
2. temperature stability is poor.Resistance wire is to SiCl4Pipeline is that intermittence heats during heating, i.e.,：Work as resistance
After silk reaches target temperature, that is, stop heating；During less than target temperature, that is, begin to warm up.The resistance wire of conventional heating pipe is
Directly contacted with metallic conduit, the heat conduction of metallic conduit is very fast, and specific heat capacity is smaller, easily lead to gas in pipelines temperature fluctuation compared with
Greatly or even there is the phenomenon that partial condensation.
3. service life is short.It due to the inhomogeneities of wire temperature part, easily leads to local temperature and crosses high temperature so that electricity
The service life of resistance silk shortens, and will replace within usual 3-6 months primary.
Invention content
In view of this, the invention is directed to a kind of for SiCl4The pipeline configuration of steam conveying, solves existing
SiCl4The problems such as temperature distribution is non-uniform for conveyance conduit, fluctuation is big and service life is short.
In order to achieve the above objectives, the technical solution of the invention is realized in：
One kind is used for SiCl4The pipeline configuration of steam conveying, resistance wire has been externally wrapped with including delivery pipe and delivery pipe
Tubular bracket and tubular bracket on the outside of be set with bellows；It is between the bellows and the tubular bracket and described
Silicone oil is filled between tubular bracket and the delivery pipe, the tubular bracket is equipped with several through-holes for silicone oil flowing；
Insulating layer is equipped on the outside of the bellows, protective layer is equipped on the outside of the insulating layer.
Further, the tubular bracket is evenly distributed with the tetrafluoroethene pipe of several through-holes using surface.
Further, the internal diameter of the tubular bracket is bigger 1-5mm than the outer diameter of the delivery pipe.
Further, the diameter of the through-hole is bigger 0.2-2mm than the diameter of the resistance wire.
Further, the resistance wire is nichrome resistance wire.
Further, the resistance wire spiral distribution is on the tubular bracket.
Further, the inside diameter of bel is bigger 1-5mm than the tubular bracket outer diameter.
Further, the silicone oil is dimethicone.
Relative to the prior art, the SiCl described in the invention4The pipeline configuration of steam conveying has the advantage that：
1) resistance wire is wrapped on tubular bracket, is effectively isolated with delivery pipe, avoid resistance wire directly and metallic conduit
Contact, while the filling silicon oil between bellows and delivery pipe, heat delivery pipe in the form of oil bath so that delivery pipe
Temperature distribution evenness is substantially improved.
2) using dimethicone as oil bath medium, there is higher specific heat capacity, in the heating of resistance wire intermittence
It in the process, will not increaseing or decreasing and change dramatically suddenly because of heating power.
3) using the form of oil bath heating, resistance wire is made to be immersed in silicone oil, the temperature basic one of resistance wire different piece
It causes, is not in the phenomenon that local temperature is too high or too low so that the service life of resistance wire is significantly increased.
Description of the drawings
The attached drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound
The illustrative embodiments and their description made do not form the improper restriction to the invention for explaining the invention.
In attached drawing：
Fig. 1 is the structure diagram of the invention；
Fig. 2 is the structure diagram for removing the invention after external insulation layer and protective layer.
Reference sign：
1- delivery pipes；2- silicone oil；3- tubular brackets；4- resistance wires；5- bellowss；6- insulating layers；7- protective layers；8- leads to
Hole.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description rather than instruction
Or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the invention.In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " are meant that two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments creates.
One kind is used for SiCl4The pipeline configuration of steam conveying, as depicted in figs. 1 and 2, including delivery pipe 1 and delivery pipe
1 is externally wrapped with the bellows 5 of 3 outside suit of the tubular bracket 3 of resistance wire 4 and tubular bracket；The bellows 5 and institute
It states between tubular bracket 3 and is filled with silicone oil 2, the tubular bracket 3 between the tubular bracket 3 and the delivery pipe 1
It is equipped with several through-holes 8 flowed for silicone oil 2；5 outside of bellows is equipped with insulating layer 6, is equipped with and protects in 6 outside of insulating layer
Sheath 7.It should be noted that 1 main function of delivery pipe is for SiCl4One cleaning of steam conveying offer, the pipeline of stabilization, one
As select 316LEP pipelines, generally selected a diameter of 1/4 ", 3/8 " or 1/2 according to the requirement of the flow and flow rate of conveying steam ".
Wherein, the tubular bracket 3 is evenly distributed with the tetrafluoroethene pipe of several through-holes 8 using surface.Tubulose branch
Frame main function provides support for resistance wire, and resistance wire is avoided directly to be contacted with conveyance conduit, and material generally selects tetrafluoro second
Alkene.Wherein, the internal diameter of the tubular bracket 3 is bigger 1-5mm than the outer diameter of the delivery pipe 1.The effect of these through-holes is for filling
Silicone oil between delivery pipe and bellows provides flow channel, and the diameter of through-hole 8 is bigger 0.2- than the diameter of the resistance wire 4
2mm effectively prevents resistance wire 4 and shelters from through-hole 8, and influences the circulation effect of silicone oil, ensure that delivery pipe 1 to greatest extent
The uniformity of temperature everywhere.
It should be pointed out that resistance wire 4 can be penetrated in through-hole 8, specifically, can be also, resistance wire 4 be out of a through-hole 8
It penetrates, is then pierced by out of another through-hole 8, thus penetrates and be pierced by repeatedly so that resistance wire 4 winds around tubular bracket 3
Inside and outside wall, whole in spiral distribution, such fixed form is solid and reliable, will not be displaced, and prevents electricity during use
It hinders 4 density degree of silk to change, influences the uniformity of temperature.
Wherein, the resistance wire 4 is nichrome resistance wire, and spiral distribution is on the tubular bracket 3.Resistance wire
Diameter selected between 0.1mm-1mm, length will be designed according to the dosage of gas, it is important to be ensured
SiCl4Before steam outflow delivery pipe, it can be sufficiently heated.
Wherein, 5 internal diameter of bellows is bigger 1-5mm than 3 outer diameter of tubular bracket.Select bellows the main reason for be
It prevents in heating process, silicone oil volume expansion causes pipeline breaking.
Silicone oil 2 described in it is filled between bellows 5 and delivery pipe 1, primarily as heat-conduction medium, by resistance wire
4 heat transfer is to delivery pipe 1.Silicone oil described in it generally selects all higher dimethicone of boiling point and specific heat capacity, boiling
Point is 155 DEG C or more, and specific heat capacity is about 1.63 × 103 J/ (kgK).Higher boiling point can cause this pipeline configuration to bear
Higher heating temperature, higher specific heat capacity can reduce the temperature fluctuation caused by intermittence heats.
Above-mentioned insulating layer 6 generally selects band-like heat-preservation cotton, and heat-preservation cotton is wrapped in the outside of bellows, and main function is just
It is to reduce heat to scatter and disappear, improves heat utilization ratio.Its thickness is generally in 5-20mm, and width is in 2cm-8cm, length and delivery pipe one
It causes.
Protective layer 7 generally selects tetrafluoroethene adhesive tape, and thickness about 0.5-1mm is coated on the heat-preservation cotton for heat preservation,
Its main function is fastening heat-preservation cotton, heat-preservation cotton is prevented in installation process to damage, at the same avoid installation personnel directly with heat preservation
Cotton contact causes allergy.
The pipeline configuration that the invention proposes, uniformity of temperature profile, fluctuation are small, and service life is long.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection domain within.
Claims (5)
1. one kind is used for SiCl4The pipeline configuration of steam conveying, it is characterised in that：It is externally wrapped with including delivery pipe and delivery pipe
There is the bellows being set on the outside of the tubular bracket and tubular bracket of resistance wire；Between the bellows and the tubular bracket,
And silicone oil is filled between the tubular bracket and the delivery pipe, the tubular bracket is equipped with several for silicone oil flowing
Through-hole；Insulating layer is equipped on the outside of the bellows, protective layer is equipped on the outside of the insulating layer；The tubular bracket uses surface
It is evenly distributed with the tetrafluoroethene pipe of several through-holes；The internal diameter of the tubular bracket is bigger 1- than the outer diameter of the delivery pipe
5mm；The diameter of the through-hole is bigger 0.2-2mm than the diameter of the resistance wire.
It is 2. according to claim 1 a kind of for SiCl4The pipeline configuration of steam conveying, it is characterised in that：The resistance wire
For nichrome resistance wire.
It is 3. according to claim 1 or 2 a kind of for SiCl4The pipeline configuration of steam conveying, it is characterised in that：The electricity
Silk spiral distribution is hindered on the tubular bracket.
It is 4. according to claim 1 a kind of for SiCl4The pipeline configuration of steam conveying, it is characterised in that：The bellows
Internal diameter is bigger 1-5mm than the tubular bracket outer diameter.
It is 5. according to claim 1 a kind of for SiCl4The pipeline configuration of steam conveying, it is characterised in that：The silicone oil is
Dimethicone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224841.XA CN105697919B (en) | 2016-04-12 | 2016-04-12 | One kind is used for SiCl4The pipeline configuration of steam conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224841.XA CN105697919B (en) | 2016-04-12 | 2016-04-12 | One kind is used for SiCl4The pipeline configuration of steam conveying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105697919A CN105697919A (en) | 2016-06-22 |
| CN105697919B true CN105697919B (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224841.XA Active CN105697919B (en) | 2016-04-12 | 2016-04-12 | One kind is used for SiCl4The pipeline configuration of steam conveying |
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| CN (1) | CN105697919B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331980A (en) * | 2018-04-09 | 2018-07-27 | 铁科创恒新材料科技有限公司 | A kind of thermal-insulating type double-wall corrugated pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191604A (en) * | 2014-08-21 | 2014-12-10 | 苏州鸿大金属制品有限公司 | Auxiliary heating device of thermal pipe shrinking machine |
| CN104984717A (en) * | 2015-07-13 | 2015-10-21 | 中国科学技术大学 | Flow oxidation reactor with soaking metal cladding |
| CN205579017U (en) * | 2016-04-12 | 2016-09-14 | 江苏通鼎光棒有限公司 | A pipeline structure for siCl4 steam is carried |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9302337B2 (en) * | 2012-08-09 | 2016-04-05 | Modine Manufacturing Company | Heat exchanger tube, heat exchanger tube assembly, and methods of making the same |
-
2016
- 2016-04-12 CN CN201610224841.XA patent/CN105697919B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191604A (en) * | 2014-08-21 | 2014-12-10 | 苏州鸿大金属制品有限公司 | Auxiliary heating device of thermal pipe shrinking machine |
| CN104984717A (en) * | 2015-07-13 | 2015-10-21 | 中国科学技术大学 | Flow oxidation reactor with soaking metal cladding |
| CN205579017U (en) * | 2016-04-12 | 2016-09-14 | 江苏通鼎光棒有限公司 | A pipeline structure for siCl4 steam is carried |
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| CN105697919A (en) | 2016-06-22 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180419 Address after: Suzhou Zhenze town of Wujiang city of Jiangsu province 215233 City Economic Development Zone, eight Xiaoping Avenue No. 8 Applicant after: The logical interconnected information limited company of ancient cooking vessel Applicant after: JIANGSU TONGDING LOGHT STICKS CO., LTD. Address before: 215200 Wujiang Economic Development Zone, Suzhou, with the main road, Jiangsu Applicant before: JIANGSU TONGDING LOGHT STICKS CO., LTD. |
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