CN113564751A - Carbonization furnace seal cavity structure - Google Patents
Carbonization furnace seal cavity structure Download PDFInfo
- Publication number
- CN113564751A CN113564751A CN202010355217.XA CN202010355217A CN113564751A CN 113564751 A CN113564751 A CN 113564751A CN 202010355217 A CN202010355217 A CN 202010355217A CN 113564751 A CN113564751 A CN 113564751A
- Authority
- CN
- China
- Prior art keywords
- cavity
- carbonization furnace
- pressure
- sealing
- clamping grooves
- 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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- 238000003763 carbonization Methods 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- 239000011148 porous material Substances 0.000 claims abstract description 19
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 11
- 239000004917 carbon fiber Substances 0.000 claims abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims description 15
- 239000010439 graphite Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 4
- 239000002775 capsule Substances 0.000 claims 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
Abstract
The invention relates to a carbonization furnace sealing cavity structure, which is applied to a carbon fiber device and is connected with a carbonization furnace, wherein a sealing clamping groove is used for connecting two petal-type sealing cavity shells to form a sealing cavity; a gas distribution pore plate is arranged between part of the sealing clamping grooves, and the adjacent sealing clamping grooves and the gas distribution pore plates connected with the adjacent sealing clamping grooves form a high-pressure labyrinth cavity; a low-pressure labyrinth cavity is formed between the sealing clamping grooves of the adjacent non-gas distribution pore plates; the gas access pipes are arranged on the two-petal type sealing cavity shell and are communicated with the high-pressure labyrinth cavity; some gas enters the high-pressure labyrinth cavity, so that a pressure field higher than that of the carbonization furnace is formed in the high-pressure labyrinth cavity. The device has a simple, stable and reliable structure, can effectively prevent external air from entering the interior of the carbonization furnace, also has a function of preventing nitrogen in the carbonization furnace from leaking outside the carbonization furnace, and achieves the aim of sealing the wire inlet and the wire outlet of the carbonization furnace of the carbon fiber device.
Description
Technical Field
The invention relates to the field of carbon fiber material equipment, in particular to a carbon fiber device carbonization furnace sealing cavity structure.
Background
The carbon fiber and the composite material thereof have strong advantages in the fields with strict requirements on material density, rigidity, weight, fatigue property and the like due to the advantages of high strength, high modulus, good electric conductivity and heat conductivity, small thermal expansion coefficient, small density and the like, are applied to the advanced scientific and technical fields of rockets, astronavigation, aviation and the like, and are also widely applied to the fields of sports equipment, textiles, chemical machinery and medicine.
The carbonization process section of the carbon fiber device comprises a low-temperature carbonization furnace and a high-temperature carbonization furnace, the internal temperature of the carbonization furnace is up to 1700 ℃, the nitrogen flushing operation is performed in the furnace body for strictly controlling the oxygen content, a furnace opening needs to be opened to realize that the pre-oxidized tows enter and exit the carbonization furnace, and meanwhile, the external air is not allowed to enter the carbonization furnace through a wire inlet and outlet opening, and the nitrogen in the furnace which is required to be reduced as much as possible is leaked out of the furnace through the wire inlet and outlet opening.
Disclosure of Invention
The invention provides a carbonization furnace sealing cavity structure, which is applied to a carbon fiber device and is connected with a carbonization furnace, and is characterized in that the sealing cavity structure comprises:
the sealing cavity is provided with a two-flap type sealing cavity shell and a plurality of sealing clamping grooves, and the two-flap type sealing cavity shell which can be split is formed by connecting the sealing clamping grooves; and
the gas distribution pore plates are arranged between part of adjacent sealing clamping grooves, and the gas distribution pore plates are not arranged between the other part of adjacent clamping grooves; and
the graphite baffles are arranged inside the sealing clamping grooves; and
the high-pressure labyrinth cavities are positioned in the sealed cavity and are formed by enclosing adjacent sealed clamping grooves and the gas distribution pore plates connected between the adjacent sealed clamping grooves; and
the low-pressure labyrinth cavities are positioned in the sealed cavity, are communicated with the high-pressure labyrinth cavity and are formed by adjacent clamping grooves of the other part without the gas distribution pore plate; and
the gas access pipes are arranged on the two-petal type sealing cavity shell and are communicated with the high-pressure labyrinth cavity; and a gas enters the high-pressure labyrinth cavity through the gas access pipe and the gas distribution pore plate, so that a pressure field higher than the carbonization furnace is formed in the high-pressure labyrinth cavity.
In one embodiment, the gas is nitrogen, the nitrogen is injected into the high-pressure labyrinth cavity through a gas access pipe, and the nitrogen in the high-pressure labyrinth cavity enters the low-pressure labyrinth cavity to be depressurized.
In one embodiment, the adjustable graphite baffle is arranged between the high-pressure labyrinth cavity and the low-pressure labyrinth cavity at intervals and is used for adjusting the pressure drop of the high-pressure seal cavity and the low-pressure seal cavity.
In one embodiment, 4 high-pressure labyrinth cavities are arranged near the side close to the carbonization furnace.
In one embodiment, 7 low-pressure labyrinth cavities are arranged near the far carbonization furnace side.
In an embodiment, the split two-petal type sealing cavity shell is welded with the sealing clamping groove.
In one embodiment, the surface of the two-petal sealed cavity outer shell is provided with a detachable honeycomb cooling jacket.
In one embodiment, the two-petal type sealing cavity shell is in threaded connection with an adjusting nut, the adjusting nut corresponds to the sealing clamping groove one to one, and the height of the graphite baffle in the sealing clamping groove is adjusted through the adjusting nut.
In one embodiment, the number of the gas access pipes is 6-12.
In an embodiment, a pressure gauge connection pipe is further disposed on the two-petal type sealed cavity housing.
Compared with the prior art, the invention has the following advantages:
1. the high-pressure labyrinth seal cavity and the low-pressure labyrinth seal cavity which are arranged at intervals are respectively formed, so that the gas in the carbonization furnace is effectively prevented from contacting with the air outside the carbonization furnace.
2. The invention improves the sealing effect by adjusting the air quantity and the air pressure of the nitrogen connecting pipe.
3. The height of the graphite baffle plate can be adjusted by adjusting the adjusting nut, so that the pressure distribution of the labyrinth seal cavity is changed.
4. The invention has the advantages of low cost, simple structure and strong operation adjustability, and effectively realizes the effective isolation of the internal gas and the external gas of the carbonization furnace.
The foregoing description of the present disclosure and the following description of the embodiments are provided to illustrate and explain the principles of the present disclosure and to provide further explanation of the invention as claimed.
Drawings
To enable those skilled in the art to understand the objects and advantages herein, reference is made to the drawings wherein like numerals represent like elements.
Fig. 1 is a schematic cross-sectional view of a carbonization furnace sealing cavity structure according to an embodiment of the invention.
FIG. 2 is a schematic view of the distribution of nozzles of the present invention.
Wherein the reference numerals are:
1-two-petal sealed cavity shell;
2-adjusting the nut;
3-gas access pipe;
4-gas distribution orifice plate;
5-sealing the clamping groove;
6-graphite baffle;
7-Low pressure labyrinth uterine cavity;
8-high pressure labyrinth;
9-pressure gauge connection pipe;
10-honeycomb cooling jacket.
Detailed Description
Fig. 1 is a schematic cross-sectional view illustrating a carbonization furnace sealed cavity structure according to an embodiment of the invention. Fig. 2 and fig. 2 are schematic views of the distribution of nozzles of the present invention. The sealed cavity structure is applied to the carbon fiber device, is connected with a carbide furnace, and this sealed cavity structure includes: the sealing device comprises a sealing cavity, a plurality of gas distribution pore plates 4, a plurality of graphite baffles, a plurality of high-pressure labyrinth cavities 8, a plurality of low-pressure labyrinth cavities 7 and a plurality of gas access pipes 3, wherein in the embodiment, the sealing cavity is provided with a two-flap sealing cavity shell and a plurality of sealing clamping grooves 5, and the sealing cavity is formed by connecting the two-flap sealing cavity shell 1 which can be split through the plurality of sealing clamping grooves 5; in an embodiment, the split two-petal type sealed cavity shell 11 is welded with the sealed clamping groove 5. The graphite baffles 6 are arranged in the sealed clamping grooves 5, the high-pressure labyrinth cavities 8 are positioned in the sealed cavities and are formed by enclosing the adjacent sealed clamping grooves 5 and the gas distribution pore plates 4 connected between the adjacent sealed clamping grooves 5; namely, the high-pressure labyrinth cavity 8 is formed by the enclosure of the adjacent sealed clamping grooves 5 and the gas distribution pore plate 4 connected between the adjacent sealed clamping grooves 5, and a plurality of low-pressure labyrinth cavities 7 are positioned in the sealed cavity, are communicated with the high-pressure labyrinth cavity 8 and are formed by the adjacent clamping grooves of the other part of the gas distribution pore plate 4 which is not arranged, namely the low-pressure labyrinth cavities 7 are formed between the adjacent sealed clamping grooves 5 of the other part of the non-gas distribution pore plate 4; it is noted that the low-pressure labyrinth chamber 7 is communicated with the high-pressure labyrinth chamber 8.
Referring to fig. 1, a gas access pipe 3 is arranged on the two-petal sealed cavity shell 1 and is communicated with the high-pressure labyrinth cavity 8; and certain gas enters the high-pressure labyrinth cavity 8 through the gas access pipe and the gas distribution pore plate 4, so that a pressure field higher than the carbonization furnace is formed in the high-pressure labyrinth cavity 8. In this embodiment, the gas is nitrogen, the nitrogen is injected into the high-pressure labyrinth chamber 8 through a gas access pipe, and the nitrogen in the high-pressure labyrinth chamber 8 enters the low-pressure labyrinth chamber 7 to be depressurized. In another embodiment, the high-pressure labyrinth cavity 8 and the low-pressure labyrinth cavity 7 are provided with adjustable graphite baffles 6 at intervals for adjusting the pressure drop of the high-pressure seal cavity and the low-pressure seal cavity. Referring to fig. 1 again, an adjusting nut 2 is connected to the two-piece type sealing cavity shell 1 in a threaded manner, the adjusting nut 2 corresponds to the sealing clamping groove 5 one by one, and the height of the graphite baffle 6 in the sealing clamping groove 5 is adjusted through the adjusting nut 2. The height of the graphite baffle 6 can be adjusted by the adjusting nut 2 which is connected with the two-petal type sealing cavity shell 1 by screw thread.
The during operation, nearly carbonization furnace side is connected with the carbonization furnace, and this sealed chamber is connected with the carbonization furnace, and the carbon fiber silk bundle after the preoxidation passes through the clearance between the graphite baffle 6 and passes this carbonization furnace sealed chamber, and nitrogen gas lets in gaseous access pipe 3 and gets into this high pressure labyrinth chamber 8 through gas distribution orifice plate 4 again to form the pressure field that is higher than interior nitrogen gas of stove in high pressure labyrinth chamber 8, ensure that interior nitrogen gas can not contact with the outside air, in an embodiment, gaseous access pipe 3 is equipped with 8. 4 high-pressure labyrinth cavities 8 are arranged on the side close to the carbonization furnace; 7 low-pressure labyrinth cavities 7 are arranged on the side close to the far carbonization furnace. The pressure of the nitrogen in the high-pressure labyrinth cavity is reduced to be slightly higher than the external atmospheric pressure after passing through a plurality of low-pressure labyrinth cavities 7 close to the far carbonization furnace side, so that the leakage of trace nitrogen to the atmosphere is realized. In one embodiment, the two-petal type sealed cavity shell 1 is further provided with a pressure gauge connecting pipe 9, the amount and pressure of nitrogen introduced into the nitrogen connecting pipe 3 are adjustable, and the adjustment and control of the pressure in each labyrinth cavity are realized. The height of the graphite baffle 6 is adjusted through the adjusting nut 2, so that the flow area between the high-pressure labyrinth cavity and the low-pressure labyrinth cavity is adjusted, the adjustment and control of the pressure in each labyrinth cavity can be realized, and the expected optimal sealing effect is achieved.
The invention relates to a carbonization furnace sealing cavity structure which comprises a detachable two-petal sealing cavity shell 1 and a sealing clamping groove 5 which are connected into a whole in a welding way; the two-petal sealed cavity shell 1 is provided with a nitrogen inlet connecting pipe and a pressure gauge connecting pipe 9, and the surface of the two-petal sealed cavity shell is provided with a detachable honeycomb cooling jacket.
In conclusion, the carbonization furnace sealing cavity provided by the invention has a simple structure, is stable and reliable, can effectively prevent external air from entering the carbonization furnace, also has a function of preventing nitrogen in the carbonization furnace from leaking outside the carbonization furnace, and achieves the purpose of sealing the wire inlet and the wire outlet of the carbonization furnace of the carbon fiber device.
Claims (10)
1. The utility model provides a carbonization furnace seal chamber structure, this seal chamber structure is applied to the carbon fiber device, is connected with a carbonization furnace, its characterized in that, this seal chamber structure includes:
the sealing cavity is provided with a two-flap type sealing cavity shell and a plurality of sealing clamping grooves, and the two-flap type sealing cavity shell which can be split is formed by connecting the sealing clamping grooves; and
the gas distribution pore plates are arranged between part of adjacent sealing clamping grooves, and the gas distribution pore plates are not arranged between the other part of adjacent clamping grooves; and
the graphite baffles are arranged inside the sealing clamping grooves; and
the high-pressure labyrinth cavities are positioned in the sealed cavity and are formed by enclosing adjacent sealed clamping grooves and the gas distribution pore plates connected between the adjacent sealed clamping grooves; and
the low-pressure labyrinth cavities are positioned in the sealed cavity, are communicated with the high-pressure labyrinth cavity and are formed by adjacent clamping grooves of the other part without the gas distribution pore plate; and
the gas access pipes are arranged on the two-petal type sealing cavity shell and are communicated with the high-pressure labyrinth cavity; and a gas enters the high-pressure labyrinth cavity through the gas access pipe and the gas distribution pore plate, so that a pressure field higher than the carbonization furnace is formed in the high-pressure labyrinth cavity.
2. The carbonization furnace sealed cavity structure as claimed in claim 1, wherein the gas is nitrogen, the nitrogen is injected into the high pressure labyrinth cavity through a gas access pipe, and the nitrogen in the high pressure labyrinth cavity enters the low pressure labyrinth cavity for pressure reduction.
3. The carbonization furnace sealed cavity structure of claim 1, wherein the high pressure labyrinth cavity and the low pressure labyrinth cavity are spaced by an adjustable graphite baffle plate for adjusting the pressure drop of the high pressure sealed cavity and the low pressure sealed cavity.
4. The carbonization furnace sealed cavity structure according to claim 1, wherein 4 of the high pressure labyrinth cavities are provided near the carbonization furnace side.
5. The carbonization furnace sealed cavity structure according to claim 1, wherein 7 of the low pressure labyrinth cavities are provided near the far carbonization furnace side.
6. The carbide furnace seal cavity structure of claim 1, wherein the split two-piece seal cavity housing is welded to the seal slot.
7. The carbide furnace capsule structure of claim 1, wherein the two-lobed capsule housing surface is fitted with a removable honeycomb cooling jacket.
8. The carbonization furnace seal cavity structure of claim 1, wherein the two-piece seal cavity housing is screwed with an adjusting nut, the adjusting nut is in one-to-one correspondence with the seal clamping groove, and the height of the graphite baffle in the seal clamping groove is adjusted by the adjusting nut.
9. The carbonization furnace sealed cavity structure according to claim 1, wherein the number of the gas inlet pipes is 6-12.
10. The carbide furnace chamber-sealing structure according to claim 1, wherein a pressure gauge connection tube is further provided on the two-piece chamber-sealing housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010355217.XA CN113564751A (en) | 2020-04-29 | 2020-04-29 | Carbonization furnace seal cavity structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010355217.XA CN113564751A (en) | 2020-04-29 | 2020-04-29 | Carbonization furnace seal cavity structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113564751A true CN113564751A (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010355217.XA Pending CN113564751A (en) | 2020-04-29 | 2020-04-29 | Carbonization furnace seal cavity structure |
Country Status (1)
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001098428A (en) * | 1999-09-30 | 2001-04-10 | Mitsubishi Rayon Co Ltd | Sealing apparatus for carbonization furnace for producing carbon fiber and method for producing carbon fiber |
| JP2010007209A (en) * | 2008-06-27 | 2010-01-14 | Mitsubishi Rayon Co Ltd | Sealing device of carbonization furnace for carbon fiber production |
| CN102433613A (en) * | 2011-09-15 | 2012-05-02 | 西安康本材料有限公司 | Gas sealing device of carbonization furnace |
| JP2012188771A (en) * | 2011-03-09 | 2012-10-04 | Mitsubishi Rayon Co Ltd | Sealing device for carbonization furnace used for producing carbon fiber |
| CN202558922U (en) * | 2012-04-25 | 2012-11-28 | 哈尔滨黑龙伟业碳纤维设备有限责任公司 | Carbide furnace labyrinth type gas seal |
| CN205635891U (en) * | 2016-03-10 | 2016-10-12 | 江苏恒神股份有限公司 | Novel carbon fibre precursor high pressure steam draft machine |
| CN106381576A (en) * | 2016-09-05 | 2017-02-08 | 株洲晨昕中高频设备有限公司 | Continuous carbon fiber carbonization furnace |
| CN106480550A (en) * | 2016-10-31 | 2017-03-08 | 哈尔滨天顺化工科技开发有限公司 | A kind of labyrinth type gas lock and its control device for carbon fiber production |
| CN109355734A (en) * | 2018-09-25 | 2019-02-19 | 浙江虹腾新材料有限公司 | A kind of sealing device for carbon fiber processing |
| CN212335377U (en) * | 2020-04-29 | 2021-01-12 | 天华化工机械及自动化研究设计院有限公司 | Carbonization furnace seal cavity structure |
-
2020
- 2020-04-29 CN CN202010355217.XA patent/CN113564751A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001098428A (en) * | 1999-09-30 | 2001-04-10 | Mitsubishi Rayon Co Ltd | Sealing apparatus for carbonization furnace for producing carbon fiber and method for producing carbon fiber |
| JP2010007209A (en) * | 2008-06-27 | 2010-01-14 | Mitsubishi Rayon Co Ltd | Sealing device of carbonization furnace for carbon fiber production |
| JP2012188771A (en) * | 2011-03-09 | 2012-10-04 | Mitsubishi Rayon Co Ltd | Sealing device for carbonization furnace used for producing carbon fiber |
| CN102433613A (en) * | 2011-09-15 | 2012-05-02 | 西安康本材料有限公司 | Gas sealing device of carbonization furnace |
| CN202558922U (en) * | 2012-04-25 | 2012-11-28 | 哈尔滨黑龙伟业碳纤维设备有限责任公司 | Carbide furnace labyrinth type gas seal |
| CN205635891U (en) * | 2016-03-10 | 2016-10-12 | 江苏恒神股份有限公司 | Novel carbon fibre precursor high pressure steam draft machine |
| CN106381576A (en) * | 2016-09-05 | 2017-02-08 | 株洲晨昕中高频设备有限公司 | Continuous carbon fiber carbonization furnace |
| CN106480550A (en) * | 2016-10-31 | 2017-03-08 | 哈尔滨天顺化工科技开发有限公司 | A kind of labyrinth type gas lock and its control device for carbon fiber production |
| CN109355734A (en) * | 2018-09-25 | 2019-02-19 | 浙江虹腾新材料有限公司 | A kind of sealing device for carbon fiber processing |
| CN212335377U (en) * | 2020-04-29 | 2021-01-12 | 天华化工机械及自动化研究设计院有限公司 | Carbonization furnace seal cavity structure |
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Effective date of registration: 20240207 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Country or region after: China Applicant after: Sinopec Shangai Petrochemical Co.,Ltd. Address before: 730060 Gansu city of Lanzhou province Xigu District Heshui Road No. 3 Applicant before: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION Co.,Ltd. Country or region before: China |