CN202522383U - Inflation sealing device with sealed helical axial surface - Google Patents
Inflation sealing device with sealed helical axial surface Download PDFInfo
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- CN202522383U CN202522383U CN2012201406517U CN201220140651U CN202522383U CN 202522383 U CN202522383 U CN 202522383U CN 2012201406517 U CN2012201406517 U CN 2012201406517U CN 201220140651 U CN201220140651 U CN 201220140651U CN 202522383 U CN202522383 U CN 202522383U
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Abstract
Provided is an inflation sealing device with a sealed helical axial surface, comprising a sealing upper gland, a sealing lower gland, a soft sealing member, and a hard sealing member, wherein the sealing upper gland comprises a pressure plate and an enclosing wall arranged at one side of the pressure plate; the sealing upper gland is sleeved to the end portion of a metal sheath; the enclosed wall is located at the outboard of the outside threads of the metal sheath; the pressure plate is provided with an air pressure interface thereon; the soft sealing member is arranged between the enclosed wall and the outside threads, with the soft sealing member being connected with the pressure plate; the sealing lower gland is also sleeved to the end portion of the metal sheath; the hard sealing member is arranged between the sealing lower gland and the outside threads; and sealing lower gland, the hard sealing member, and the outside threads are fixedly connected; a gap is left between the upper edge of the sealing lower gland and the lower edge of the enclosed wall; the hard sealing member and the soft sealing member are connected; and the enclosed wall of the sealing upper gland can approach or separate from the sealing lower gland in the axial direction of the metal sheath via a mobile positioning mechanism. The inflation sealing device of the utility model features environmental protection, excellent durability, and high security and reliability.
Description
Technical field
The utility model relates to the bubble-tight packoff of test cable, is 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.
The utility model content
In order to overcome the deficiency of prior art, the purpose of the utility model has been 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 utility model 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 utility model 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 air inflation sealing device of the screw axis face seal of the utility model preferred embodiment.
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 filter element of water purifier life-span of the utility model and further describe, so that clearerly understand the utility model 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 the utility model claim 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 |
|---|---|---|---|
| CN2012201406517U CN202522383U (en) | 2012-04-01 | 2012-04-01 | Inflation sealing device with sealed helical axial surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201406517U CN202522383U (en) | 2012-04-01 | 2012-04-01 | Inflation sealing device with sealed helical axial surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202522383U true CN202522383U (en) | 2012-11-07 |
Family
ID=47105326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201406517U Expired - Fee Related CN202522383U (en) | 2012-04-01 | 2012-04-01 | Inflation sealing device with sealed helical axial surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202522383U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620896A (en) * | 2012-04-01 | 2012-08-01 | 广州岭南电缆股份有限公司 | Inflatable sealing device for face seal of screw shaft |
| 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 |
| CN107677428A (en) * | 2017-10-30 | 2018-02-09 | 西北橡胶塑料研究设计院有限公司 | One kind rolls rubber diaphragm seal tightness test frock |
-
2012
- 2012-04-01 CN CN2012201406517U patent/CN202522383U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620896A (en) * | 2012-04-01 | 2012-08-01 | 广州岭南电缆股份有限公司 | Inflatable sealing device for face seal of screw shaft |
| 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 |
| CN107677428A (en) * | 2017-10-30 | 2018-02-09 | 西北橡胶塑料研究设计院有限公司 | One kind rolls rubber diaphragm seal tightness test frock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |