CN201697833U - Big gap internal expanding seal ring - Google Patents
Big gap internal expanding seal ring Download PDFInfo
- Publication number
- CN201697833U CN201697833U CN2010202268248U CN201020226824U CN201697833U CN 201697833 U CN201697833 U CN 201697833U CN 2010202268248 U CN2010202268248 U CN 2010202268248U CN 201020226824 U CN201020226824 U CN 201020226824U CN 201697833 U CN201697833 U CN 201697833U
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- big gap
- ring
- block
- expansion type
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Abstract
The utility model discloses a big gap internal expanding seal ring which is installed in the seal installation groove at the external diameter of a die; the external diameter part of the seal ring and the inner hole of a pressure test steel tube can be in separation and contact seal; the inner hole part of the seal ring is a prepressing seal groove which is communicated with the high-pressure liquid in the prepressing channel of the die; and the seal lips at two sides of the prepressing seal groove are respectively in seal fit with two end surfaces of the seal installation groove. Before prepressing, a big gap exists between the external diameter part of the seal ring and the inner hole wall of the pressure test steel tube, during prepressing, the external diameter part of the seal ring is expanded to push against the inner hole wall of the pressure test steel tube to realize sealing the inner hole of the pressure test steel tube; and a supporting block is matched with a supporting angle block to lead the seal ring not to be extruded under ultrahigh pressure so as to realize ultrahigh pressure big gap internal expanding seal.
Description
Technical field
The utility model belongs to the seal element of steel tube pressure-measuring machine, is a kind of big gap internal expansion type sealing ring of the pressure testing steel tube inner hole being implemented sealing concretely.
Background technology
Present steel tube pressure-measuring machine adopts the outside surface Sealing Technology to the pressure testing steel pipe, it is the hem type Sealing Technology, used seal element adopts the UHV (ultra-high voltage) big clearance seal circle of precompressed seal groove at external diameter more, under the highly pressurised liquid effect in pre-pressure passageway, seal element is embraced the pressure testing outer surface of steel tube, and the pressure testing outer surface of steel tube is implemented sealing.For the bore area of steel pipe, existing seal element can not be implemented effective seal to steel tube inner hole.
Summary of the invention
The utility model will solve existing seal element can not implement the effectively technical matters of sealing to steel tube inner hole, and a kind of big gap internal expansion type sealing ring of the pressure testing steel tube inner hole being implemented sealing is provided.
In order to solve the problems of the technologies described above, the technical scheme that the utility model is taked is: a kind of big gap internal expansion type sealing ring, O-ring seal is installed in the sealing mounting groove of mould outer radius, the external diameter position of O-ring seal can be separated with the pressure testing steel tube inner hole and be contacted sealing, the endoporus position of O-ring seal is the precompressed seal groove, the precompressed seal groove is communicated with the highly pressurised liquid in the pre-pressure passageway in the mould, and the seal lip of precompressed seal groove both sides cooperates with two butt-end packings of sealing mounting groove respectively.
Mould is in the pressure testing steel pipe.Before pre-pressure passageway feeds highly pressurised liquid, there is big gap between big internal expansion type sealing ring external diameter position, gap and the pressure testing steel tube inner hole surface, when pre-pressure passageway feeds highly pressurised liquid, under highly pressurised liquid precompressed effect, big gap internal expansion type sealing ring distending in the sealing mounting groove, the seal lip of precompressed seal groove both sides seals closely with two end faces of sealing mounting groove respectively and contacts, the external diameter position distending of O-ring seal pushes up to the inner hole wall of pressure testing steel pipe, seal closely with inner hole wall and to contact, realize the pressure testing steel tube inner hole is sealed.
The seal lip of close pressure testing liquid one side is greater than the seal lip of precompressed seal groove opposite side.During pressure testing, the seal lip of precompressed seal groove opposite side is in pressured state, under the situation that guarantees sealing, the smaller intensity that can improve O-ring seal of sealing lip, O-ring seal cross-sectional area when distending reduces, under the effect of pressure, O-ring seal is pressed towards the sealing mounting groove end face of precompressed seal groove opposite side, O-ring seal is in lax or gapped state with the sealing mounting groove end face of close pressure testing liquid one side, because the seal lip of this side is bigger, keep sealing closely so under lower or higher pressure, can both keep opening, make the O-ring seal distending, realize sealing the pressure testing steel tube inner hole.
O-ring seal is the back-up block that is intervally arranged of pressure testing liquid one side end face outer rim setting-in dorsad.Back-up block has increased the intensity of O-ring seal, the gap of adjacent supports piece with O-ring seal under pressure distending strengthen.
Back-up block is evenly arranged.
Between the adjacent supports piece bearing pin is arranged on the O-ring seal, the pin shaft hole on the support corner block is fixedlyed connected with bearing pin.Back-up block and support corner block be with the O-ring seal distending, the support corner block distending that slides on back-up block.The gap is strengthened because of distending between the support corner block, and its gap is blocked by back-up block; The gap is strengthened because of distending between the back-up block, and its gap is blocked by support corner block.Back-up block cooperates with support corner block, and O-ring seal also can be extruded under hyperpressure, realizes the sealing of expanding in the big gap of UHV (ultra-high voltage).
The projection on the O-ring seal end face of back-up block and support corner block is fan-shaped.
Back-up block and support corner block are steels.
The material of O-ring seal is a polyurethane.
The utility model has the advantages that: the seal lip of precompressed seal groove both sides remains to seal closely with two end faces of sealing mounting groove respectively and contacts, before the precompressed, O-ring seal external diameter position and pressure testing steel tube inner hole wall have big gap, during precompressed, under the preload pressure effect, the external diameter position distending of O-ring seal pushes up to the inner hole wall of pressure testing steel pipe, realizes the pressure testing steel tube inner hole is sealed.Back-up block cooperates with support corner block, and O-ring seal also can be extruded under hyperpressure, realizes the sealing of expanding in the big gap of UHV (ultra-high voltage).
Description of drawings
Fig. 1 is the synoptic diagram of an embodiment of the utility model;
Fig. 2 is Fig. 1 embodiment and mould and the pressure testing steel pipe synoptic diagram before the pressurization when being used;
Fig. 3 is Fig. 1 embodiment and mould and the pressure testing steel pipe synoptic diagram during pressurization when being used.
Embodiment
Accompanying drawings.
Fig. 1 is the big gap of an a kind of UHV (ultra-high voltage) internal expansion type sealing ring.During use, the O-ring seal 1 of polyurethane is to be placed in the sealing mounting groove of mould 5 outer radius among the figure, its right side is the side near pressure testing liquid, when not applying precompressed, separate with pressure testing steel pipe 6 endoporus at the external diameter position, and bigger gap is arranged, apply precompressed after, the external diameter position contacts sealing with pressure testing steel pipe 6 endoporus, referring to Fig. 2 and Fig. 3.The endoporus position of O-ring seal 1 is the precompressed seal groove, the precompressed seal groove is communicated with the highly pressurised liquid in the pre-pressure passageway in the mould 5, mould 5 is in the endoporus of pressure testing steel pipe 6, and the seal lip of precompressed seal groove both sides cooperates with two butt-end packings of sealing mounting groove respectively, referring to Fig. 2 and Fig. 3.O-ring seal 1 external diameter position is the face of cylinder generally speaking, but on the right side one circle projection is arranged, and has strengthened the sealing of O-ring seal 1 external diameter and pressure testing steel pipe 6 endoporus under the pressure test pressure effect, referring to Fig. 3.The seal lip on right side is greater than the seal lip in left side, and the seal lip groove depth on right side is greater than the seal lip groove depth in left side.The steel back-up block 2 that O-ring seal 1 left end face outer rim setting-in evenly is intervally arranged, bearing pin 4 is arranged between the adjacent supports piece 2 on the O-ring seal 1, pin shaft hole on the steel support corner block 3 is fixedlyed connected with bearing pin 4, and the projection on O-ring seal 1 end face of back-up block 2 and support corner block 3 is fan-shaped.Back-up block 2 and support corner block 3 be with O-ring seal 1 distending, support corner block 3 distending that on back-up block 2, slides, and the gap is strengthened because of distending between the support corner block 3, and its gap is blocked by back-up block 2; The gap is strengthened because of distending between the back-up block 2, and its gap is blocked by support corner block 3.Back-up block 2 cooperates with support corner block 3, and O-ring seal 1 also can be extruded under hyperpressure, has realized the sealing of expanding in the big gap of UHV (ultra-high voltage).
Fig. 2 and Fig. 3 are Fig. 1 embodiment and mould and the pressure testing steel pipe synoptic diagram when being used, and it is the synoptic diagram of the relevant big internal expansion type sealing ring working position, gap of oil pipe hydraulic pressure pressure testing machine.The big gap of UHV (ultra-high voltage) internal expansion type sealing ring is placed in the sealing mounting groove of mould 5 outer radius, Fig. 2 is presented at the preceding O-ring seal 1 external diameter position of precompressed and there is bigger gap in pressure testing steel pipe 6 inner hole walls, and the big gap of UHV (ultra-high voltage) shown in Figure 3 internal expansion type sealing ring is at preload pressure P
0Effect is distending down, the external diameter position distending of O-ring seal 1, push up to the inner hole wall of pressure testing steel pipe 6, back-up block 2 and support corner block 3 are also with its distending, push up to the inner hole wall of pressure testing steel pipe 6, seal the gap of mould 5 and steel pipe 6 inner hole walls, O-ring seal 1 is under the effect of pressure test pressure P, tightly be pressed on inner hole wall, back-up block 2 and the support corner block 3 of pressure testing steel pipe 6, and can be extruded.The right side of O-ring seal 1 is in gapped state with the right side of sealing mounting groove, since precompressed seal groove right side be suit, enough big seal lip, under low and higher pressure, can both keep opening and keep sealing, make O-ring seal 1 distending, realize endoporus sealing with pressure testing steel pipe 6.
Claims (8)
1. big gap internal expansion type sealing ring, it is characterized in that O-ring seal (1) is installed in the sealing mounting groove of mould (5) outer radius, the external diameter position of O-ring seal (1) can be separated with pressure testing steel pipe (6) endoporus and be contacted sealing, the endoporus position of O-ring seal (1) is the precompressed seal groove, the precompressed seal groove is communicated with the highly pressurised liquid in the pre-pressure passageway in the mould (5), and the seal lip of precompressed seal groove both sides cooperates with two butt-end packings of sealing mounting groove respectively.
2. big gap according to claim 1 internal expansion type sealing ring is characterized in that the seal lip of the seal lip of close pressure testing liquid one side greater than precompressed seal groove opposite side.
3. big gap according to claim 1 internal expansion type sealing ring is characterized in that O-ring seal (1) back-up block (2) that is intervally arranged of pressure testing liquid one side end face outer rim setting-in dorsad.
4. big gap according to claim 3 internal expansion type sealing ring is characterized in that back-up block (2) evenly arranges.
5. big gap according to claim 3 internal expansion type sealing ring is characterized in that O-ring seal (1) upward has bearing pin (4) between the adjacent supports piece (2), and the pin shaft hole on the support corner block (3) is fixedlyed connected with bearing pin (4).
6. big gap according to claim 5 internal expansion type sealing ring is characterized in that the projection on O-ring seal (1) end face of back-up block (2) and support corner block (3) is fan-shaped.
7. according to claim 5 or 6 described big gap internal expansion type sealing rings, it is characterized in that back-up block (2) and support corner block (3) are steels.
8. big gap according to claim 1 internal expansion type sealing ring is characterized in that the material of O-ring seal (1) is a polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202268248U CN201697833U (en) | 2010-06-04 | 2010-06-04 | Big gap internal expanding seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202268248U CN201697833U (en) | 2010-06-04 | 2010-06-04 | Big gap internal expanding seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697833U true CN201697833U (en) | 2011-01-05 |
Family
ID=43399080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202268248U Expired - Fee Related CN201697833U (en) | 2010-06-04 | 2010-06-04 | Big gap internal expanding seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697833U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240324A (en) * | 2013-05-08 | 2013-08-14 | 中国重型机械研究院股份公司 | Liquid-expansion forming system for bimetal composite pipe |
| CN103697240A (en) * | 2014-01-03 | 2014-04-02 | 青岛恒基泰机电科技有限公司 | Pipe end sealing ring capable of bearing axial force |
| CN103791089A (en) * | 2014-01-22 | 2014-05-14 | 青岛恒基泰机电科技有限公司 | Steel tube end seal ring and sealing device |
| CN105757258A (en) * | 2016-04-14 | 2016-07-13 | 番禺珠江钢管有限公司 | Novel large-gap internal expansion type seal |
| CN110671560A (en) * | 2019-10-10 | 2020-01-10 | 太原科技大学 | Automatic quick ultrahigh-pressure pipeline joint |
-
2010
- 2010-06-04 CN CN2010202268248U patent/CN201697833U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240324A (en) * | 2013-05-08 | 2013-08-14 | 中国重型机械研究院股份公司 | Liquid-expansion forming system for bimetal composite pipe |
| CN103697240A (en) * | 2014-01-03 | 2014-04-02 | 青岛恒基泰机电科技有限公司 | Pipe end sealing ring capable of bearing axial force |
| CN103791089A (en) * | 2014-01-22 | 2014-05-14 | 青岛恒基泰机电科技有限公司 | Steel tube end seal ring and sealing device |
| CN103791089B (en) * | 2014-01-22 | 2016-06-08 | 青岛中瑞泰软控技术有限公司 | A kind of steel tube end part sealing-ring and tightness system |
| CN105757258A (en) * | 2016-04-14 | 2016-07-13 | 番禺珠江钢管有限公司 | Novel large-gap internal expansion type seal |
| CN110671560A (en) * | 2019-10-10 | 2020-01-10 | 太原科技大学 | Automatic quick ultrahigh-pressure pipeline joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QINGDAO ZHONGRUITAI SOFT CONTROL TECHNOLOGY CO., L Free format text: FORMER OWNER: QINGDAO HENGJITAI TECHNOLOGY CO., LTD. Effective date: 20150703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150703 Address after: Miao road Laoshan District 266061 Shandong city of Qingdao province 6-8 Patentee after: The Tai Ruan of Qingdao China and Sweden control techniques company limited Address before: Miao road Laoshan District 266061 Shandong city of Qingdao province 6-8 Patentee before: Qingdao Hengjitai Technologies Corp., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee after: The Tai Ruan of Qingdao China and Sweden control techniques company limited Address before: Miao road Laoshan District 266061 Shandong city of Qingdao province 6-8 Patentee before: The Tai Ruan of Qingdao China and Sweden control techniques company limited |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee after: Qingdao Ruitai mesnac Polytron Technologies Inc Address before: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee before: The Tai Ruan of Qingdao China and Sweden control techniques company limited |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20190604 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |