CN102620896A - Inflatable sealing device for face seal of screw shaft - Google Patents
Inflatable sealing device for face seal of screw shaft Download PDFInfo
- Publication number
- CN102620896A CN102620896A CN2012100980918A CN201210098091A CN102620896A CN 102620896 A CN102620896 A CN 102620896A CN 2012100980918 A CN2012100980918 A CN 2012100980918A CN 201210098091 A CN201210098091 A CN 201210098091A CN 102620896 A CN102620896 A CN 102620896A
- Authority
- CN
- China
- Prior art keywords
- sealing
- seal
- lower cover
- pressing plate
- pressing cover
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 86
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 210000003141 lower extremity Anatomy 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004049 embossing Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The invention relates to an inflatable sealing device for face seal of a screw shaft. The inflatable sealing device comprises a sealing upward pressing cover, a sealing downward pressing cover, a soft sealing piece and a hard sealing piece, wherein the sealing upward pressing cover comprises a pressing plate and a surrounding wall arranged at one side of the pressing plate; the sealing upward pressing cover is connected at the end part of the metal sheath in a sleeved manner; the surrounding wall is located outside an outer screw thread of the metal sheath; the pressing plate is provided with an air pressure interface; the soft sealing piece is arranged between the surrounding wall and the outer screw thread, and is also connected with the pressing plate; the sealing downward pressing cover is also connected at the end part of the metal sheath in a sleeved manner; the hard sealing piece is arranged between the sealing downward pressing cover and the outer screw thread; the sealing downward pressing cover, the hard sealing piece and the outer screw thread are connected mutually in a fixing manner; a gap exists between the upper edge of the sealing downward pressing cover and the lower edge of the surrounding wall; the hard sealing piece is connected with the soft sealing piece; and the surrounding wall of the sealing upward pressing cover can be close to or far away from the upper edge of the sealing downward pressing cover along the axial direction of the metal sheath through a movement locating mechanism. The inflatable sealing device for the face seal of the screw shaft, disclosed by the invention, has the advantages of environmental protection, durability, high safety and high reliability.
Description
Technical field
The present invention relates to the bubble-tight packoff of test cable, be specifically related to a kind of air inflation sealing device of screw axis face seal.
Background technology
Existing 110kV and above crosslinked cable need carry out air-tight test to the metal sheath layer that spiral embossing is arranged.Existing universal method is through the pyrocondensation characteristic of plastics pyrocondensation cap, and spiral embossing is sealed, and prevents that gas from passing through spiral embossing and externally revealing.There is following defective in the method: 1, material contracting with heat can't be reused, and strengthens resource consumption, and discarded pyrocondensation cap pollutes environment; 2, utilize the pyrocondensation characteristic low, can not satisfy the requirement of high pressure gas tightness test the reliability that spiral embossing seals; Need use the coal gas air pressure gun when 3, heating the pyrocondensation cap, have security risk.
Summary of the invention
In order to overcome the deficiency of prior art, the object of the present invention is to provide the air inflation sealing device of a kind of environmental protection, reliable, safe screw axis face seal.
In order to achieve the above object, the technical scheme that the present invention adopted is following:
A kind of air inflation sealing device of screw axis face seal, it comprises sealing upper press cover, sealing lower cover, soft seal, hard seal; The sealing upper press cover comprises that a pressing plate and is arranged on the leg of pressing plate one side, and the sealing upper press cover is socketed in the end of protective metal shell, and leg is positioned at the externally threaded outside of protective metal shell, and pressing plate is provided with the air pressure interface; Soft seal is arranged between leg and the external thread, and soft seal also is connected with pressing plate; The sealing lower cover also is socketed in the end of protective metal shell; Hard seal is arranged between sealing lower cover and the external thread; Sealing lower cover, hard seal, external thread three are mutually permanently connected; Have the gap between the coboundary of sealing lower cover and the lower limb of leg, hard seal is connected with soft seal; The leg of sealing upper press cover through a mobile positioning mechanism can along the axial direction of protective metal shell near or away from the coboundary that seals lower cover.
As preferred construction, said mobile positioning mechanism comprises wing nut, swing bolt, and the stiff end of swing bolt is fixedly connected with the sealing lower cover, is spirally connected with wing nut after the end that is spirally connected of swing bolt passes pressing plate.
As preferred construction, the sealing lower cover is fixedly connected with external thread through fixed screw.
As preferred construction, soft seal is rubber seal or tetrafluoro tygon seal.
As preferred construction, hard seal is steel seal or copper seal or graphite seal or alloy seal.
The present invention compared with prior art has following beneficial effect:
Abandon material contracting with heat fully, adopted physical construction to realize sealing, reusable, can not produce discarded object, do not pollute the environment, and have safe, high reliability features.
Description of drawings
Fig. 1 is the structure cut-open view of the air inflation sealing device of the screw axis face seal of preferred embodiment of the present invention.
Wherein, 1, wing nut; 2, sealing upper press cover; 21, pressing plate; 22, leg; 3, soft seal; 4, hard seal; 5, sealing lower cover; 6, fixed screw; 7, air pressure interface; 8, protective metal shell; 9, swing bolt.
Embodiment
Below, in conjunction with accompanying drawing and embodiment, remind control system to do to the filter element of water purifier of the present invention life-span and further describe, so that clearerly understand the present invention's technological thought required for protection.
As shown in Figure 1, a kind of air inflation sealing device of screw axis face seal, it comprises sealing upper press cover 2, sealing lower cover 5, soft seal 3, hard seal 4.
Sealing upper press cover 2 comprises that a pressing plate 21 and is arranged on the leg 22 of pressing plate 21 1 sides (promptly sealing the cross section structure of upper press cover 2 actual is a U font structure); Sealing upper press cover 2 is socketed in the end of protective metal shell 8; Leg 22 is positioned at the externally threaded outside of protective metal shell 8, and pressing plate 21 is provided with air pressure interface 7; Soft seal 3 is arranged between the external thread of leg 22 and protective metal shell 8, and soft seal 3 also is connected with pressing plate 21; Sealing lower cover 5 also is socketed in the end of protective metal shell 8; Hard seal 4 is arranged between the external thread of sealing lower cover 5 and protective metal shell 8; The external thread three of sealing lower cover 5, hard seal 4, protective metal shell 8 is mutually permanently connected; Have the gap between the coboundary of sealing lower cover 5 and the lower limb of leg 22, hard seal 4 is connected with soft seal 3; The leg 22 of sealing upper press cover 2 through a mobile positioning mechanism can along the axial direction of protective metal shell 8 near or away from the coboundary that seals lower cover 5.
As preferred construction, said mobile positioning mechanism comprises wing nut 1, swing bolt 9, and the stiff end of swing bolt 9 is fixedly connected with sealing lower cover 5, and the end that is spirally connected of swing bolt 9 passes pressing plate 21 backs and is spirally connected with wing nut 1.Sealing lower cover 5 is fixedly connected with the external thread of protective metal shell 8 through fixed screw 6.The quantity of wing nut 1, swing bolt 9, fixed screw 6 all can be decided as required, and for example, the data of wing nut 1 and swing bolt 9 can be four, can be evenly distributed on respectively pressing plate 21 periphery, the sealing lower cover 5 side face on; The quantity of fixed screw 6 also can be four, also is evenly distributed on the side face of sealing lower cover 5.
The soft seal 3 of present embodiment can be rubber seal or tetrafluoro tygon seal; Hard seal 4 can be steel seal or copper seal or graphite seal or alloy seal.
During use, fix sealing lower cover 5, make sealing lower cover 5 compress hard seal 4, the external thread three of sealing lower cover 5, hard seal 4, protective metal shell 8 is fixedly connected, relative displacement does not take place with fixed screw 6; Turn wing nut 1 makes sealing upper press cover 2 move to sealing lower cover 5 directions, makes pressing plate 21 and hard seal 4 co-extruded soft seals 3; Soft seal 3 compressive deformations; Soft seal 3 is fully closely filled the externally threaded gap of protective metal shell 8, at this moment, because the mutual interlock of screw thread of wing nut 1 and swing bolt 9; The stationkeeping of sealing upper press cover 2 is got off, and realizes the air seal to the helicoid of protective metal shell 8.Air pressure interface 7 connects the inflated with nitrogen joint, can inflate cable, after the inflated, pulls out the inflated with nitrogen joint, makes air pressure interface 7 connect rain glass, can test the impermeability of protective metal shell 8.After test finishes; Extract rain glass, the wing nut of turn in the other direction 1 makes sealing upper press cover 2 away from sealing lower cover 4; Unclamp fixed screw 6; Disassemble whole air inflation sealing device from protective metal shell 8, be installed to air inflation sealing device on the next protective metal shell 8, carry out the protective metal shell air tightness test of next bar cable.
In addition, the structure of the mobile positioning mechanism of present embodiment can also be other forms, can move and push soft seal 3 to sealing lower cover 5 as long as realize sealing upper press cover 2.For example; Can on sealing upper press cover 2, fastener be set, at the axial direction that seals lower cover 5 upper edge protective metal shells 8 a plurality of catching grooves be set, during use; As long as get final product sealing upper press cover 2 to sealing lower cover 5 directions pressure, snapping onto fastener on the corresponding catching groove then.
Present embodiment has simple in structure, and is safe and reliable, environmental protection and saving, convenience operation.
For a person skilled in the art, can make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection domain of claim of the present invention all according to the technical scheme and the design of above description.
Claims (5)
1. the air inflation sealing device of screw axis face seal is characterized in that, comprises sealing upper press cover, sealing lower cover, soft seal, hard seal; The sealing upper press cover comprises that a pressing plate and is arranged on the leg of pressing plate one side, and the sealing upper press cover is socketed in the end of protective metal shell, and leg is positioned at the externally threaded outside of protective metal shell, and pressing plate is provided with the air pressure interface; Soft seal is arranged between leg and the external thread, and soft seal also is connected with pressing plate; The sealing lower cover also is socketed in the end of protective metal shell; Hard seal is arranged between sealing lower cover and the external thread; Sealing lower cover, hard seal, external thread three are mutually permanently connected; Have the gap between the coboundary of sealing lower cover and the lower limb of leg, hard seal is connected with soft seal; The leg of sealing upper press cover through a mobile positioning mechanism can along the axial direction of protective metal shell near or away from the coboundary that seals lower cover.
2. the air inflation sealing device of screw axis face seal as claimed in claim 1; It is characterized in that; Said mobile positioning mechanism comprises wing nut, swing bolt, and the stiff end of swing bolt is fixedly connected with the sealing lower cover, is spirally connected with wing nut after the end that is spirally connected of swing bolt passes pressing plate.
3. the air inflation sealing device of screw axis face seal as claimed in claim 1 is characterized in that, the sealing lower cover is fixedly connected with external thread through fixed screw.
4. the air inflation sealing device of screw axis face seal as claimed in claim 1 is characterized in that, soft seal is rubber seal or tetrafluoro tygon seal.
5. the air inflation sealing device of screw axis face seal as claimed in claim 1 is characterized in that, hard seal is steel seal or copper seal or graphite seal or alloy seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100980918A CN102620896A (en) | 2012-04-01 | 2012-04-01 | Inflatable sealing device for face seal of screw shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100980918A CN102620896A (en) | 2012-04-01 | 2012-04-01 | Inflatable sealing device for face seal of screw shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102620896A true CN102620896A (en) | 2012-08-01 |
Family
ID=46560946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100980918A Pending CN102620896A (en) | 2012-04-01 | 2012-04-01 | Inflatable sealing device for face seal of screw shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102620896A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091046A (en) * | 2012-11-13 | 2013-05-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Motor graphite end face seal device seal test jig |
| CN105547596A (en) * | 2015-12-08 | 2016-05-04 | 重庆泰山电缆有限公司 | Sealing cap for detecting sealing performance of cable metal sheath |
| CN107219041A (en) * | 2017-07-21 | 2017-09-29 | 无锡市曙光电缆有限公司 | A kind of extra-high-tension cable protective metal shell air tight test device |
| CN108443613A (en) * | 2018-04-23 | 2018-08-24 | 浙江想能睡眠科技股份有限公司 | A kind of airtight inflatable interface of fast insert-pull of soft or hard adjustable bed mattess |
| CN108663163A (en) * | 2017-03-30 | 2018-10-16 | 迈得医疗工业设备股份有限公司 | Plugging structure and dialyzer detection device |
| CN114636528A (en) * | 2022-04-11 | 2022-06-17 | 长江三峡绿洲技术发展有限公司 | HDPE pipe air tightness inspection device and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209352A (en) * | 1978-08-21 | 1980-06-24 | Raychem Corporation | Methods for sealing closure members to substrates |
| CN2172922Y (en) * | 1993-08-21 | 1994-07-27 | 吴精华 | Sleeve for cable junctions |
| CN2199624Y (en) * | 1994-02-03 | 1995-05-31 | 郭晓云 | Sealed pulling-resistant cable connector |
| CN1274816A (en) * | 1999-05-14 | 2000-11-29 | 日本玛泰克斯株式会社 | Material for use in gland packing element the gland packing element and manufacture thereof |
| CN101915646A (en) * | 2010-08-06 | 2010-12-15 | 浙江球冠特种线缆有限公司 | Tightness test device of metal sheath |
| CN202522383U (en) * | 2012-04-01 | 2012-11-07 | 广州岭南电缆股份有限公司 | Inflation sealing device with sealed helical axial surface |
-
2012
- 2012-04-01 CN CN2012100980918A patent/CN102620896A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209352A (en) * | 1978-08-21 | 1980-06-24 | Raychem Corporation | Methods for sealing closure members to substrates |
| CN2172922Y (en) * | 1993-08-21 | 1994-07-27 | 吴精华 | Sleeve for cable junctions |
| CN2199624Y (en) * | 1994-02-03 | 1995-05-31 | 郭晓云 | Sealed pulling-resistant cable connector |
| CN1274816A (en) * | 1999-05-14 | 2000-11-29 | 日本玛泰克斯株式会社 | Material for use in gland packing element the gland packing element and manufacture thereof |
| CN101915646A (en) * | 2010-08-06 | 2010-12-15 | 浙江球冠特种线缆有限公司 | Tightness test device of metal sheath |
| CN202522383U (en) * | 2012-04-01 | 2012-11-07 | 广州岭南电缆股份有限公司 | Inflation sealing device with sealed helical axial surface |
Non-Patent Citations (1)
| Title |
|---|
| 《工程材料实用手册》编辑委员会编: "《工程材料实用手册》", 31 August 2002, 中国标准出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091046A (en) * | 2012-11-13 | 2013-05-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Motor graphite end face seal device seal test jig |
| CN103091046B (en) * | 2012-11-13 | 2016-01-27 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of motor graphite end face seal device seal test jig |
| CN105547596A (en) * | 2015-12-08 | 2016-05-04 | 重庆泰山电缆有限公司 | Sealing cap for detecting sealing performance of cable metal sheath |
| CN105547596B (en) * | 2015-12-08 | 2019-09-13 | 重庆泰山电缆有限公司 | Sealing cap is used in the detection of cable metal sheath sealing performance |
| CN108663163A (en) * | 2017-03-30 | 2018-10-16 | 迈得医疗工业设备股份有限公司 | Plugging structure and dialyzer detection device |
| CN107219041A (en) * | 2017-07-21 | 2017-09-29 | 无锡市曙光电缆有限公司 | A kind of extra-high-tension cable protective metal shell air tight test device |
| CN108443613A (en) * | 2018-04-23 | 2018-08-24 | 浙江想能睡眠科技股份有限公司 | A kind of airtight inflatable interface of fast insert-pull of soft or hard adjustable bed mattess |
| CN108443613B (en) * | 2018-04-23 | 2024-05-14 | 浙江想能睡眠科技股份有限公司 | Quick plug airtight inflation interface of soft or hard adjustable mattress |
| CN114636528A (en) * | 2022-04-11 | 2022-06-17 | 长江三峡绿洲技术发展有限公司 | HDPE pipe air tightness inspection device and using method thereof |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120801 |