CN106766914A - High vacuum tube furnace pipe plug - Google Patents
High vacuum tube furnace pipe plug Download PDFInfo
- Publication number
- CN106766914A CN106766914A CN201710000707.6A CN201710000707A CN106766914A CN 106766914 A CN106766914 A CN 106766914A CN 201710000707 A CN201710000707 A CN 201710000707A CN 106766914 A CN106766914 A CN 106766914A
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- CN
- China
- Prior art keywords
- hollow casing
- tube furnace
- diameter
- cylinder hollow
- pipe plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/02—Furnaces of a kind not covered by any preceding group specially designed for laboratory use
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Glass Melting And Manufacturing (AREA)
- Furnace Details (AREA)
Abstract
A kind of high vacuum tube furnace pipe plug, it is characterized in that, including a quartz glass cylinder hollow casing, the cylinder hollow casing external diameter is more smaller than the boiler tube internal diameter of tube furnace, the both ends of the surface of the cylinder hollow casing are all provided with several breeder tubes, the both ends of the surface edge chamfer of the cylinder hollow casing, the end face of the cylinder hollow casing welds a quartz ring, the threaded quartz cover of filler screwed hole and the filler corresponding threaded holes is provided with the end face center, the solid quartz glass pearl of cylinder hollow casing, the diameter of quartz glass pearl is more than the diameter of described passage less than the diameter of described filler screwed hole.It is of the invention to effectively improve the vacuum and cleanliness factor of tube furnace compared with traditional pipe plug, can continuous several times reuse, reduce manufacturing cost.
Description
Technical field
The present invention relates to high vacuum tube furnace, particularly a kind of high vacuum tube furnace pipe plug.
Background technology
High vacuum tube furnace is the conventional equipment in the laboratories such as scientific research institutions, universities and colleges, industrial and mining enterprises, is widely used in
The heat treatment experiment of small lot sample.In structure, heating is both provided with tubular type furnace body, is distributed in the outer of boiler tube
Enclose, the two ends of boiler tube are stretched out outside body of heater.Tube furnace operating temperature is very high, reach as high as 1700 DEG C, due to radiant heat transfer, boiler tube
Convection heat transfer' heat-transfer by convection causes that boiler tube two ends temperature is also higher after heat conduction and ventilation, and up to 400~500 DEG C, long-term use easily makes stove
Pipe two ends vacuum flange inner seal ring is aging or even fusing, reduces sealing effectiveness, sealing ring is aging or fusion process in can release
Poisonous gas or inflammable and explosive property gas are placed with, easily cause these gas leaks, there is potential safety hazard.So, existing technology
Processing scheme is to place pipe plug at tube furnace two ends, and mostly mullite insulating brick etc material is made, and plays heat-insulated work
With the temperature of boiler tube two ends vacuum flange can effectively being reduced, so as to slow down the aging of sealing ring.This kind of material of mullite has
Loose structure, can effectively slow down thermal convection current, and pipe plug is heat-insulated, high insulating effect.But, traditional pipe plug has the defect of itself, main
It is attributed to three classes：
(1) a large amount of gases are remained in the mullite material therein hole that traditional pipe plug is used, tube furnace is by taking out
After vacuum technology, the gas slowly of pipe plug inner void is discharged, and has a strong impact on the vacuum of tube furnace；
(2) after traditional pipe plug is through technique machine-shapings such as round as a ball, cuttings, a small amount of Al is remained in surface hole defect2O3-SiO2
Powder, when vacuumizing, these powders are extracted to be scattered in tube furnace to be influenceed the cleanliness factor of tube furnace or is blocked up after being extracted
Plug vavuum pump causes the damage of vavuum pump；
(3) traditional pipe plug, contains a small amount of K2The materials such as O, CaO, it is readily volatilized under high temperature out to be reacted with sample,
While influence heat treatment experiment, also cause pipe plug not easy cleaning, it is impossible to which more than enough time repetitive cycling is used, and improves tube furnace
Use cost.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high vacuum tube furnace pipe plug, and the pipe plug solves tradition
Pipe plug hole residual gas and powder are slowly released after evacuation, have a strong impact on the skill of tube furnace vacuum and cleanliness factor
Art problem.The vacuum and cleanliness factor of tube furnace can be effectively improved, repeated multiple times can be used, reduce manufacturing cost.
In order to solve the above technical problems, technical solution of the invention is as follows：
A kind of high vacuum tube furnace pipe plug, its feature is, including a quartz glass cylinder hollow casing, the circle
Cylinder hollow casing external diameter is more smaller than the boiler tube internal diameter of tube furnace, and the both ends of the surface of the cylinder hollow casing are all provided with several
Breeder tube, the both ends of the surface edge chamfer of the cylinder hollow casing, the end face welding one of the cylinder hollow casing
Individual quartz ring, the threaded quartz cover of filler screwed hole and the filler corresponding threaded holes, the circle are provided with the end face center
The solid quartz glass pearl of cylinder hollow casing, the diameter of quartz glass pearl is big less than the diameter of described filler screwed hole
In the diameter of described passage.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) it is material (quartz glass heat resistance is good, thermal coefficient of expansion is small), quartz glass that the present invention uses quartz glass
Compactness is high, is remained in the absence of hole and powder particle thing, can improve tube furnace vacuum in use and cleaning
Degree；
(2) chamfering at cylinder hollow casing edges at two ends, reduces pipe plug and is touched with the friction of tube furnace boiler tube inner diameter
The probability for hitting；
(3) pipe plug both ends of the surface are uniformly provided with passage, meet tube furnace and vacuumize and be passed through required gas in use
The need for body；
(4) this pipe plug end face is provided with stuffing hole and equipped with threaded quartz cover, and quartz glass pearl can smoothly from filling out
The turnover of material hole, and screw and can prevent quartz glass pearl from being skidded off from pipe plug after quartz cover；
(5) pipe plug is had the cylindrical structure for filling quartz glass pearl, the quartz glass of these dense accumulations into one
Pearl can play heat-insulated effect；
(6) this pipe plug stable chemical nature, is difficult to be corroded, and stuffing hole quartz cover of being outwarded winding after use takes out quartz glass
Pearl, easily cleaning, can be repeated several times recycling.
Brief description of the drawings
Fig. 1 is the front view of the embodiment of the present invention；
Fig. 2 is the right view when embodiment of the present invention is not filled by quartz glass pearl；
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention are more
It is easy to be understood by this area scientific and technical personnel, apparent is clearly defined so as to be made to protection scope of the present invention.
As shown in Fig. 1~2, a kind of high vacuum tube furnace pipe plug, including cylinder hollow casing 1, cylinder is hollow outer
The both sides end face edge chamfer of shell 1, is filled in the quartz glass pearl 2 in cylinder hollow casing, the ventilation of two side ends EDS maps
Aperture 5 and 7, side end face welding quartz ring 4, the side end face set stuffing hole 6 and with threaded quartz cover 3.
A kind of course of work of high vacuum tube furnace pipe plug is as follows：Take two pipe plugs, quartz cover of outwarding winding 3, by quartzy glass
Glass pearl is filled into cylinder hollow casing the inside by stuffing hole 6, and quartz cover 3 is screwed immediately.Pipe plug is placed on tube furnace boiler tube
Pipe plug is shifted onto specified location with crucible hook (generally outside heater element in boiler tube outer end in two ends, the side with quartz ring 4
End), vacuum flange is installed, is vacuumized, when vacuum reaches 10 in boiler tube-5After Pa, according to technological requirement set intensification, constant temperature,
Cooling process carries out the heat treatment experiment of sample.After temperature is down to room temperature, sealing flange is taken apart, quartz ring is caught on crucible hook
4 hook to tube furnace boiler tube two ends pipe plug, take out pipe plug, and stuffing hole quartz cover 3 of outwarding winding takes out quartz glass pearl 2, by cylinder
Hollow casing 1 remains to be continuing with next time after finishing drying together with the cleaning of quartz glass pearl 2.
Embodiments of the invention are the foregoing is only, interest field of the invention is not thereby limited, such as by quartzy material
Matter is changed to corundum material or other required materials etc..It is clear that those skilled in the art made to the embodiment party
Formula any associated change or change, all without the protection domain beyond design of the invention and appended claims.
Claims (1)
1. a kind of high vacuum tube furnace pipe plug, it is characterised in that including a quartz glass cylinder hollow casing, the cylinder
Body hollow casing external diameter is more smaller than the boiler tube internal diameter of tube furnace, and the both ends of the surface of the cylinder hollow casing are all provided with several and lead to
Gas aperture, the both ends of the surface edge chamfer of the cylinder hollow casing, the end face of the cylinder hollow casing welds one
Quartz ring, the threaded quartz cover of filler screwed hole and the filler corresponding threaded holes, the cylinder are provided with the end face center
The solid quartz glass pearl of body hollow casing, the diameter of quartz glass pearl is more than less than the diameter of described filler screwed hole
The diameter of described passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000707.6A CN106766914B (en) | 2017-01-03 | 2017-01-03 | High vacuum tube furnace pipe plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000707.6A CN106766914B (en) | 2017-01-03 | 2017-01-03 | High vacuum tube furnace pipe plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106766914A true CN106766914A (en) | 2017-05-31 |
| CN106766914B CN106766914B (en) | 2019-04-19 |
Family
ID=58951898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710000707.6A Active CN106766914B (en) | 2017-01-03 | 2017-01-03 | High vacuum tube furnace pipe plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106766914B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133494A1 (en) * | 2002-03-25 | 2005-06-23 | Toshiba Ceramics Co., Ltd | Carbon wire heating object sealing heater and fluid heating apparatus using the same heater |
| CN203568850U (en) * | 2013-07-18 | 2014-04-30 | 常州二维碳素科技有限公司 | Multi-screen heat-insulated quartz tube stopper |
| CN203922732U (en) * | 2014-05-30 | 2014-11-05 | 常州二维碳素科技有限公司 | A kind of silica tube pipe plug |
| CN204438572U (en) * | 2015-01-30 | 2015-07-01 | 江苏龙泉太阳能科技有限公司 | A kind of thermal-collecting tube of solar water heater of vacuum structure |
-
2017
- 2017-01-03 CN CN201710000707.6A patent/CN106766914B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133494A1 (en) * | 2002-03-25 | 2005-06-23 | Toshiba Ceramics Co., Ltd | Carbon wire heating object sealing heater and fluid heating apparatus using the same heater |
| CN203568850U (en) * | 2013-07-18 | 2014-04-30 | 常州二维碳素科技有限公司 | Multi-screen heat-insulated quartz tube stopper |
| CN203922732U (en) * | 2014-05-30 | 2014-11-05 | 常州二维碳素科技有限公司 | A kind of silica tube pipe plug |
| CN204438572U (en) * | 2015-01-30 | 2015-07-01 | 江苏龙泉太阳能科技有限公司 | A kind of thermal-collecting tube of solar water heater of vacuum structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106766914B (en) | 2019-04-19 |
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