CN107606937B - High-temperature atmosphere sintering furnace with sealed thermocouple - Google Patents
High-temperature atmosphere sintering furnace with sealed thermocouple Download PDFInfo
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- CN107606937B CN107606937B CN201710801076.8A CN201710801076A CN107606937B CN 107606937 B CN107606937 B CN 107606937B CN 201710801076 A CN201710801076 A CN 201710801076A CN 107606937 B CN107606937 B CN 107606937B
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Abstract
The invention discloses a high-temperature atmosphere sintering furnace with a sealed thermocouple, which comprises a furnace body refractory material, a furnace body sealed shell, a thermocouple, a corundum insulating tube, a corundum through tube, a corundum outer protective tube and a sealed support; the furnace body sealing shell is provided with a through hole, the sealing support is arranged outside the through hole of the furnace body sealing shell, the thermocouple penetrates through the corundum insulating tube, the corundum through tube is fixed at the through hole of the furnace body sealing shell, the corundum insulating tube penetrates through the corundum through tube, and the corundum outer protective tube is sleeved outside one end of the corundum insulating tube; one end of the corundum outer protective tube penetrates through the furnace body refractory material, and the other end of the corundum outer protective tube is open and a certain gap is reserved between the corundum outer protective tube and the corundum through tube. According to the sintering furnace, a certain gap is reserved between the opening end of the corundum outer protective tube and the corundum through tube, so that the pressure difference between the inside and the outside of the corundum outer protective tube is balanced, and the corundum outer protective tube is prevented from being damaged due to the overlarge pressure difference.
Description
Technical Field
The invention relates to a sintering furnace, in particular to a high-temperature atmosphere sintering furnace with a sealed thermocouple.
Background
The traditional temperature thermocouple consists of a thermocouple, a corundum insulating tube and a corundum outer protective tube, wherein the thermocouple penetrates through the corundum insulating tube, the corundum outer protective tube is sleeved outside the corundum insulating tube, when the temperature thermocouple is applied to a high-temperature atmosphere sintering furnace, if the corundum outer protective tube penetrates through a furnace body sealing shell and a furnace body refractory material, the corundum outer protective tube is detected into the furnace and sealed, and the tube wall of the corundum outer protective tube is subjected to all atmosphere pressure while bearing the high temperature in a furnace chamber, so that the corundum outer protective tube is easy to break and leak gas, thereby affecting the air tightness and the temperature measurement reliability of the furnace body.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention discloses a high-temperature atmosphere sintering furnace with a sealed thermocouple, which comprises a furnace body refractory material, a furnace body sealing shell, a thermocouple, a corundum insulating tube, a corundum through tube, a corundum outer protective tube and a sealing support; the furnace body sealing shell is provided with a through hole, the sealing support is arranged outside the through hole of the furnace body sealing shell and welded on the furnace body sealing shell, the thermocouple penetrates through the corundum insulating tube, the corundum through tube is fixed at the through hole of the furnace body sealing shell, the corundum insulating tube penetrates through the corundum through tube, and the corundum outer protective tube is sleeved outside one end of the corundum insulating tube; one end of the corundum outer protective tube penetrates through the furnace body refractory material, and the other end of the corundum outer protective tube is open and a certain gap is reserved between the corundum outer protective tube and the corundum through tube; a sealing ring group and an O-shaped ring group are arranged between the sealing support and the corundum tube, and the sealing ring group and the O-shaped ring group are sleeved outside the corundum tube. The arrangement can make the pressure inside and outside the corundum outer protective tube equal by utilizing the gap between the corundum outer protective tube and the corundum through tube, so that damage caused by overlarge pressure difference is avoided, and the sealing bearing parts of the device are all positioned on the sealing shell with lower temperature outside the high-temperature area of the hearth, thereby ensuring more reliable sealing and also keeping the tightness of the corundum through tube.
Further, the sealing ring set comprises a first sealing ring and a second sealing ring, the O-shaped ring set comprises a first O-shaped ring and a second O-shaped ring, and the first sealing ring, the first O-shaped ring, the second sealing ring and the second O-shaped ring are sequentially arranged in the sealing support from top to bottom. The setting is stable and firm, and the sealing performance is good.
Further, high temperature resistant glue is arranged between the corundum through pipe and the corundum insulating pipe. Such an arrangement may enhance sealability.
Further, the sealing support is a cylinder, and the inner diameter of the cylinder is larger than the diameter of the through hole of the furnace body sealing shell. The bottom of the O-shaped ring can be propped against the furnace body sealing shell through the arrangement, so that the structure is more compact.
Further, the sealing support further comprises a compression nut, an inner thread is arranged on the inner wall of the sealing support, an outer thread is arranged on the outer wall of the compression nut, and the inner thread and the outer thread are matched with each other. The structure is simple and stable, and the cost is low.
Further, the upper end of the outer wall of the compression nut is provided with a convex edge protruding outwards. The convex edge of the compression nut can be propped against the sealing support, so that the sealing performance of the sealing support is better.
According to the sintering furnace, a certain gap is reserved between the opening end of the corundum outer protective tube and the corundum through tube, so that the pressure difference between the inside and the outside of the corundum outer protective tube is balanced, and the corundum outer protective tube is prevented from being damaged due to the overlarge pressure difference.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
Referring to fig. 1, a high-temperature atmosphere sintering furnace with a sealed thermocouple comprises a furnace body refractory material 11, a furnace body sealed shell 12, a thermocouple 20, a corundum insulating tube 30, a corundum through tube 40, a corundum outer protective tube 50 and a sealing support 60; the furnace body sealing shell 12 is provided with a through hole, the sealing support 60 is arranged outside the through hole of the furnace body sealing shell 12, the thermocouple passes through the corundum insulating tube 30, the corundum through tube 40 is fixed at the through hole of the furnace body sealing shell 12, the corundum insulating tube 30 passes through the corundum through tube 40, and the corundum outer protective tube 50 is sleeved outside one end of the corundum insulating tube 30; one end of the corundum outer protection pipe 50 passes through the furnace body refractory material 11, and the other end of the corundum outer protection pipe 50 is open and a certain gap is reserved between the corundum outer protection pipe and the corundum through pipe 40.
A sealing ring set and an O-ring set are arranged between the sealing support 60 and the corundum tube 40, and the sealing ring set and the O-ring set are sleeved outside the corundum tube 40. The sealing ring set comprises a first sealing ring 71 and a second sealing ring 73, the O-ring set comprises a first O-ring 72 and a second O-ring 74, and the first sealing ring 71, the first O-ring 72, the second sealing ring 73 and the second O-ring 74 are sequentially arranged in the sealing support 60 from top to bottom. A high temperature resistant glue 80 is arranged between the corundum through pipe 40 and the corundum insulating pipe 30.
The seal support 60 is a cylinder having an inner diameter larger than the diameter of the through hole of the furnace seal housing 12. The sealing support 60 further comprises a compression nut 90, an inner thread 61 is arranged on the inner wall of the sealing support 60, an outer thread 91 is arranged on the outer wall of the compression nut 90, and the inner thread 61 and the outer thread 91 are matched with each other. The upper end of the outer wall of the compression nut 90 is provided with an outwardly protruding flange 92. The seal support 60 is welded to the furnace seal housing 12.
The external thread 91 of the compression nut 90 is screwed in cooperation with the internal thread 61 of the seal support 60, so as to lock the seal ring set and the O-ring set in the seal support 60. The inner diameter of the sealing support 60 is larger than the diameter of the through hole of the furnace sealing shell 12, and the diameters of the sealing ring group and the O-ring group are both larger than the diameter of the through hole, so that the bottom of the second O-ring 74 can be propped against the furnace sealing shell 12. Since the corundum insulating tube 30 and the corundum outer shield tube 50 penetrate the refractory material layer and have one end enter the furnace high temperature zone and the refractory material has pores, the gap between the furnace body seal housing 12 and the furnace body refractory material 11 is equal to the air pressure of the furnace high temperature zone. The corundum outer protective tube 50 uses the open end thereof to make the pressure inside and outside the tube the same, so as to avoid the overlarge pressure difference inside and outside the tube caused by sealing.
The corundum outer protective tube 50 is integrally arranged in the furnace atmosphere so that the inner and outer walls of the corundum outer protective tube 50 are not subjected to pressure difference, and the gaps of the thermocouples penetrating through the holes of the corundum insulating tube 30 are sealed by high-temperature glue. The gap between the corundum insulating tube 30 and the inner wall of the corundum tube 40 is sealed by high temperature glue.
The outer wall of the corundum tube 40 and the furnace body sealing shell 12 are sealed by a sealing support 60, an O-ring group, a sealing ring group and a compression nut 90. The bottom of the sealing support 60 welded on the furnace body sealing shell 12 can pass through the corundum tube 40 but the temperature-resistant O-shaped ring and the sealing ring cannot pass through, and the inner circle of the sealing support 60 is provided with threads which can be matched with the compression nut 90 so as to fasten the corundum tube 40, the temperature-resistant O-shaped sealing ring and the sealing ring. In this embodiment, the corundum outer shroud 50 is fixed relative to the furnace body refractory material 11 by a clamp 93.
The sealing support 60 is inserted with the corundum tube 40 bonded with the corundum insulating tube 30 and the thermocouple, and then sleeved with the corundum tube in sequence: the second O-ring 74, the second sealing ring 73, the first O-ring 72 and the first sealing ring 71 are sleeved into the compression nut 90 for fastening and sealing.
In the invention, one end of the corundum outer protective tube 50 bearing high temperature with a bottom seal is positioned in a high temperature area 94, and the open end is positioned in a space between the outer wall of the furnace body refractory material 11 and the furnace body sealing shell 12, and the inside and the outside bear the same pressure so as not to bear pressure difference. The sealing structure is positioned on the sealing furnace shell with lower temperature, and the sealing is ensured by the reliably fastened temperature-resistant O-shaped ring and the high-temperature glue, so that the high-temperature atmosphere sintering furnace can reliably work and is free from air leakage under the temperature of 1700 ℃ and the pressure of 0.5MPa, and the stable and reliable operation of the high-temperature atmosphere sintering furnace is ensured.
According to the sintering furnace, a certain gap is reserved between the opening end of the corundum outer protective tube and the corundum through tube, so that the pressure difference between the inside and the outside of the corundum outer protective tube is balanced, and the corundum outer protective tube is prevented from being damaged due to the overlarge pressure difference.
The present invention is not limited to the above-described embodiments, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.
Claims (6)
1. The utility model provides a take high temperature atmosphere sintering stove of sealed thermocouple, includes furnace body refractory material and furnace body sealed shell, its characterized in that: the device also comprises a thermocouple, a corundum insulating tube, a corundum through tube, a corundum outer protective tube and a sealing support; the furnace body sealing shell is provided with a through hole, the sealing support is arranged outside the through hole of the furnace body sealing shell and welded on the furnace body sealing shell, the thermocouple penetrates through the corundum insulating tube, the corundum through tube is fixed at the through hole of the furnace body sealing shell, the corundum insulating tube penetrates through the corundum through tube, and the corundum outer protective tube is sleeved outside one end of the corundum insulating tube; one end of the corundum outer protective tube penetrates through the furnace body refractory material, and the other end of the corundum outer protective tube is open and a certain gap is reserved between the corundum outer protective tube and the corundum through tube; a sealing ring group and an O-shaped ring group are arranged between the sealing support and the corundum tube, and the sealing ring group and the O-shaped ring group are sleeved outside the corundum tube.
2. The high temperature atmosphere sintering furnace with a sealed thermocouple of claim 1, wherein: the sealing ring set comprises a first sealing ring and a second sealing ring, the O-shaped ring set comprises a first O-shaped ring and a second O-shaped ring, and the first sealing ring, the first O-shaped ring, the second sealing ring and the second O-shaped ring are sequentially arranged in the sealing support from top to bottom.
3. The high temperature atmosphere sintering furnace with a sealed thermocouple of claim 1, wherein: and high-temperature resistant glue is arranged between the corundum through pipe and the corundum insulating pipe.
4. The high temperature atmosphere sintering furnace with a sealed thermocouple of claim 1, wherein: the sealing support is a cylinder, and the inner diameter of the cylinder is larger than the diameter of the through hole of the furnace body sealing shell.
5. The high-temperature atmosphere sintering furnace with a sealed thermocouple of claim 4, wherein: the sealing support is characterized by further comprising a compression nut, wherein an internal thread is arranged on the inner wall of the sealing support, an external thread is arranged on the outer wall of the compression nut, and the internal thread and the external thread are matched with each other.
6. The high-temperature atmosphere sintering furnace with a sealed thermocouple according to claim 5, wherein: the upper end of the outer wall of the compression nut is provided with an outwardly convex flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801076.8A CN107606937B (en) | 2017-09-07 | 2017-09-07 | High-temperature atmosphere sintering furnace with sealed thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801076.8A CN107606937B (en) | 2017-09-07 | 2017-09-07 | High-temperature atmosphere sintering furnace with sealed thermocouple |
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| Publication Number | Publication Date |
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| CN107606937A CN107606937A (en) | 2018-01-19 |
| CN107606937B true CN107606937B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710801076.8A Active CN107606937B (en) | 2017-09-07 | 2017-09-07 | High-temperature atmosphere sintering furnace with sealed thermocouple |
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| CN113109380A (en) * | 2021-05-17 | 2021-07-13 | 太原理工大学 | CT real-time scanning high-temperature pyrolysis coal rock test system and test method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2513092Y (en) * | 2001-11-23 | 2002-09-25 | 魏东 | High pressure fluid precision temprature measuring device |
| EP1365219A2 (en) * | 2002-05-22 | 2003-11-26 | Shin-Etsu Chemical Co., Ltd. | Thermocouple protective tube |
| JP2004225142A (en) * | 2003-01-27 | 2004-08-12 | Jfe Steel Kk | Device for hermetically sealing and fixing furnace bottom part in blast furnace |
| CN202158905U (en) * | 2011-06-01 | 2012-03-07 | 邵阳纺织机械有限责任公司 | Temperature measuring simulating and insulation sealing device for ionitriding |
| CN203024897U (en) * | 2012-12-17 | 2013-06-26 | 核动力运行研究所 | Thermocouple structure under high temperature and high pressure condition |
| CN103630256A (en) * | 2013-06-27 | 2014-03-12 | 杭州亿泰自控设备有限公司 | Gasification furnace thermocouple and preparation method of thermocouple protection sleeve |
| CN104101439A (en) * | 2013-04-03 | 2014-10-15 | 北京航天试验技术研究所 | Sealing method for thermocouple temperature sensor |
| CN204007907U (en) * | 2014-02-18 | 2014-12-10 | 青岛隆盛晶硅科技有限公司 | A kind of two pillar vacuum thermocouple |
| CN204228285U (en) * | 2014-09-28 | 2015-03-25 | 重庆迪洋仪表有限责任公司 | Claus oven furnace roof special electric thermo-couple |
| CN204255512U (en) * | 2014-10-17 | 2015-04-08 | 北京航天益森风洞工程技术有限公司 | Thermopair hermetically-sealed construction |
| CN204758148U (en) * | 2015-06-10 | 2015-11-11 | 广东大唐国际潮州发电有限责任公司 | Hot jacket formula thermocouple |
| CN105466590A (en) * | 2016-01-07 | 2016-04-06 | 中国核电工程有限公司 | Thermocouple specially for high temperature |
| CN207214794U (en) * | 2017-09-07 | 2018-04-10 | 韶关市欧莱高新材料有限公司 | A kind of high-temperature atmosphere sintering furnace of the sealed thermocouple of band |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4437592B2 (en) * | 2000-04-24 | 2010-03-24 | いすゞ自動車株式会社 | Fast response thermocouple |
-
2017
- 2017-09-07 CN CN201710801076.8A patent/CN107606937B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2513092Y (en) * | 2001-11-23 | 2002-09-25 | 魏东 | High pressure fluid precision temprature measuring device |
| EP1365219A2 (en) * | 2002-05-22 | 2003-11-26 | Shin-Etsu Chemical Co., Ltd. | Thermocouple protective tube |
| JP2004225142A (en) * | 2003-01-27 | 2004-08-12 | Jfe Steel Kk | Device for hermetically sealing and fixing furnace bottom part in blast furnace |
| CN202158905U (en) * | 2011-06-01 | 2012-03-07 | 邵阳纺织机械有限责任公司 | Temperature measuring simulating and insulation sealing device for ionitriding |
| CN203024897U (en) * | 2012-12-17 | 2013-06-26 | 核动力运行研究所 | Thermocouple structure under high temperature and high pressure condition |
| CN104101439A (en) * | 2013-04-03 | 2014-10-15 | 北京航天试验技术研究所 | Sealing method for thermocouple temperature sensor |
| CN103630256A (en) * | 2013-06-27 | 2014-03-12 | 杭州亿泰自控设备有限公司 | Gasification furnace thermocouple and preparation method of thermocouple protection sleeve |
| CN204007907U (en) * | 2014-02-18 | 2014-12-10 | 青岛隆盛晶硅科技有限公司 | A kind of two pillar vacuum thermocouple |
| CN204228285U (en) * | 2014-09-28 | 2015-03-25 | 重庆迪洋仪表有限责任公司 | Claus oven furnace roof special electric thermo-couple |
| CN204255512U (en) * | 2014-10-17 | 2015-04-08 | 北京航天益森风洞工程技术有限公司 | Thermopair hermetically-sealed construction |
| CN204758148U (en) * | 2015-06-10 | 2015-11-11 | 广东大唐国际潮州发电有限责任公司 | Hot jacket formula thermocouple |
| CN105466590A (en) * | 2016-01-07 | 2016-04-06 | 中国核电工程有限公司 | Thermocouple specially for high temperature |
| CN207214794U (en) * | 2017-09-07 | 2018-04-10 | 韶关市欧莱高新材料有限公司 | A kind of high-temperature atmosphere sintering furnace of the sealed thermocouple of band |
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| CN107606937A (en) | 2018-01-19 |
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Address after: 512000 factory building C, No. 5 Chuangye Road, Wujiang District, Shaoguan City, Guangdong Province Applicant after: Guangdong Oulai high tech materials Co.,Ltd. Address before: 512000 in Yangshan Area, Muxi Industrial Park, Shaoguan City, Guangdong Province Applicant before: SHAOGUAN OULAI HI-TECH MATERIAL Co.,Ltd. |
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