CN105697779A - Inclined wedge type inner expansion sealing mandrel - Google Patents
Inclined wedge type inner expansion sealing mandrel Download PDFInfo
- Publication number
- CN105697779A CN105697779A CN201610113699.1A CN201610113699A CN105697779A CN 105697779 A CN105697779 A CN 105697779A CN 201610113699 A CN201610113699 A CN 201610113699A CN 105697779 A CN105697779 A CN 105697779A
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- CN
- China
- Prior art keywords
- connecting rod
- hole
- guide pad
- stop collar
- step portion
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses an inclined wedge type inner expansion sealing mandrel mounted on a turbine shell air tightness test fixture. The inclined wedge type inner expansion sealing mandrel comprises a connecting rod, a limiting sleeve and a guide block, wherein the connecting rod is movably sleeved in the limiting sleeve, and is limited through the limiting part; one end of the connecting rod is connected with a force applying part, and an inner hole is formed in the other end; one end of the guide block is arranged in the inner hole, and a sealing ring is arranged on the other end; and the force applying part drives the connecting rod to move along the limiting sleeve to extrude the sealing ring to outwards deform for sealing. The inclined wedge type inner expansion sealing mandrel drives the connecting rod to move along the limiting sleeve to extrude the sealing ring to outwards deform to achieve a sealing effect under the effect of the force applying part. The inclined wedge type inner expansion sealing mandrel improves the air tightness detecting stability, and enables operators to be more convenient in actual operation and to save more labors.
Description
Technical field
The present invention relates to a kind of turbine case air tightness test fixture, particularly relate to a kind of formula of tiltedly carving internal expanding for turbine case air tightness test fixture and seal mandrel。
Background technology
It is known that, needing it is carried out air tightness test in the course of processing of turbine case, at present, the sealing means of the mandrel of existing turbine case air tightness test fixture adopts the sealing of interference mostly, this kind of sealing means, due to the impact by the size of part own, causes air-tightness unstable result。Simultaneously because the problem of the magnitude of interference, add operator labor intensity in operation process。
Summary of the invention
It is an object of the invention to provide one and tiltedly carve formula internal expanding sealing mandrel, it has the stability and labour-saving simple to operate feature that improve air-leakage test, to solve the problems referred to above that in prior art, turbine case air tightness test fixture exists。
For reaching this purpose, the present invention by the following technical solutions:
One is tiltedly carved formula internal expanding and is sealed mandrel, it includes connecting rod, stop collar and guide pad, wherein, described connecting rod is placed on movably in described stop collar and is undertaken spacing by limiting component, one end of described connecting rod connects force application part, and the other end offers endoporus, and one end of described guide pad is arranged in described endoporus, being provided with sealing ring on the other end, described force application part drives connecting rod to move crush seal circle along stop collar outwards to deform and seal。
Especially, on described stop collar and guide pad, correspondence offers through hole, described connecting rod coordinate through hole offer moving hole, bearing pin sequentially passes through the through hole of stop collar, connecting rod, stop collar and guide pad are attached by the through hole of moving hole and guide pad, the external diameter of the apertures bearing pin of described through hole is arranged, and the aperture of described moving hole is more than the external diameter of described bearing pin。
Especially, one end of described guide pad is provided with up big and down small slant wedge mechanism, and in the first step portion that has been sequentially arranged above of described slant wedge mechanism and second step portion on described guide pad, described sealing ring is arranged in first step portion, described connecting rod is outward extended with positive stop lug boss in the opening part of described endoporus, the end of described connecting rod is assemblied in second step portion, and the end of described stop collar is arranged on positive stop lug boss, and the height in described first step portion is less than the diameter of described sealing ring。
Especially, one end of described connecting rod offers the connecting hole for connecting force application part。
Beneficial effects of the present invention is, compared with prior art described formula internal expanding sealing mandrel of tiltedly carving drives connecting rod to move the outside stress deformation of crush seal circle to reach sealing effectiveness along stop collar under the effect of force application part。Not only improve the stability of air-leakage test；And make operator easier in practical operation, more laborsaving。
Accompanying drawing explanation
Fig. 1 is the profile that formula of tiltedly the carving internal expanding that the specific embodiment of the invention 1 provides seals mandrel。
In figure:
1, connecting rod；2, stop collar；3, guide pad；4, connecting hole；5, endoporus；6, positive stop lug boss；7, slant wedge mechanism；8, first step portion；9, second step portion；10, sealing ring；11, moving hole；12, bearing pin。
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with accompanying drawing and by detailed description of the invention。
Referring to shown in Fig. 1, Fig. 1 is the profile that formula of tiltedly the carving internal expanding that the specific embodiment of the invention 1 provides seals mandrel。
In the present embodiment, one is tiltedly carved formula internal expanding sealing mandrel and is arranged on turbine case air tightness test fixture, it includes connecting rod 1, stop collar 2 and guide pad 3, one end of described connecting rod 1 offers connecting hole 4, described connecting hole 4 connects force application part as force side, the other end of described connecting rod 1 offers endoporus 5, the opening part of described endoporus 5 is outward extended with positive stop lug boss 6, the force side of described connecting rod 1 penetrates in described stop collar 2 and is undertaken spacing by positive stop lug boss 6, one end of described guide pad 3 is arranged in described endoporus 5, the other end is provided with up big and down small slant wedge mechanism 7, and in the first step portion 8 that has been sequentially arranged above of described slant wedge mechanism 7 and second step portion 9 on described guide pad 3, sealing ring 10 is arranged in first step portion 8, the end of described connecting rod 1 is assemblied in second step portion 9, the height in described first step portion 8 is less than the diameter of described sealing ring 10。
On described stop collar 2 and guide pad 3, correspondence offers through hole, described connecting rod 1 coordinate through hole offer moving hole 11, bearing pin 12 sequentially passes through the through hole of stop collar 2, connecting rod 1, stop collar 2 and guide pad 3 are attached by the through hole of moving hole 11 and guide pad 3, the external diameter of the apertures bearing pin 12 of described through hole is arranged, the aperture of described moving hole 11 is more than the external diameter of described bearing pin 12, so that connecting rod 1 can move along stop collar 2。
During sealing, connecting rod 1 is exerted a force by force application part, and connecting rod 1 moves along stop collar 2, then sealing ring 10 is extruded by the other end of connecting rod 1, outwards deforms to reach sealing effectiveness after making sealing ring 10 stress。Connecting rod 1 is under the double limitation of stop collar 2 and guide pad 3 leads, it is ensured that the stability of sealing。
Above example simply elaborates ultimate principle and the characteristic of the present invention; the present invention is not limited by above-mentioned example; without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and change both fall within the claimed scope of the invention。Claimed scope is defined by appending claims and equivalent thereof。
Claims (4)
1. tiltedly carve formula internal expanding sealing mandrel for one kind, it includes connecting rod, stop collar and guide pad, it is characterized in that, described connecting rod is placed on movably in described stop collar and is undertaken spacing by limiting component, one end of described connecting rod connects force application part, and the other end offers endoporus, and one end of described guide pad is arranged in described endoporus, being provided with sealing ring on the other end, described force application part drives connecting rod to move crush seal circle along stop collar outwards to deform and seal。
2. formula internal expanding of tiltedly carving according to claim 1 seals mandrel, it is characterized in that, on described stop collar and guide pad, correspondence offers through hole, described connecting rod coordinate through hole offer moving hole, bearing pin sequentially passes through the through hole of stop collar, connecting rod, stop collar and guide pad are attached by the through hole of moving hole and guide pad, and the external diameter of the apertures bearing pin of described through hole is arranged, and the aperture of described moving hole is more than the external diameter of described bearing pin。
3. formula of tiltedly the carving internal expanding according to any one of claim 1 or 2 seals mandrel, it is characterized in that, one end of described guide pad is provided with up big and down small slant wedge mechanism, and in the first step portion that has been sequentially arranged above of described slant wedge mechanism and second step portion on described guide pad, described sealing ring is arranged in first step portion, described connecting rod is outward extended with positive stop lug boss in the opening part of described endoporus, the end of described connecting rod is assemblied in second step portion, the end of described stop collar is arranged on positive stop lug boss, the height in described first step portion is less than the diameter of described sealing ring。
4. formula internal expanding of tiltedly carving according to claim 1 seals mandrel, it is characterised in that one end of described connecting rod offers the connecting hole for connecting force application part。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610113699.1A CN105697779B (en) | 2016-02-29 | 2016-02-29 | It is a kind of tiltedly to carve formula internal expanding sealing mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610113699.1A CN105697779B (en) | 2016-02-29 | 2016-02-29 | It is a kind of tiltedly to carve formula internal expanding sealing mandrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105697779A true CN105697779A (en) | 2016-06-22 |
| CN105697779B CN105697779B (en) | 2018-05-25 |
Family
ID=56222825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610113699.1A Active CN105697779B (en) | 2016-02-29 | 2016-02-29 | It is a kind of tiltedly to carve formula internal expanding sealing mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105697779B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071797A (en) * | 2016-11-10 | 2018-05-25 | 常州星宇车灯股份有限公司 | A kind of adaptive dibit fastening sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201521717U (en) * | 2009-07-28 | 2010-07-07 | 中冶南方工程技术有限公司 | Cable lead-in wire seal device under vacuum positive pressure and negative pressure |
| US20140314604A1 (en) * | 2013-04-23 | 2014-10-23 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Compressor |
| CN104676188A (en) * | 2014-12-12 | 2015-06-03 | 中国海洋石油总公司 | Internal-expansion type hydraulic boosting plugging device for submarine pipeline |
| CN205038016U (en) * | 2015-09-17 | 2016-02-17 | 青岛华涛汽车模具有限公司 | Airtight floating shutoff that detects machine of car intake pipe |
| CN205401702U (en) * | 2016-02-29 | 2016-07-27 | 无锡烨隆精密机械有限公司 | Carve sealed dabber of formula internal expanding to one side |
-
2016
- 2016-02-29 CN CN201610113699.1A patent/CN105697779B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201521717U (en) * | 2009-07-28 | 2010-07-07 | 中冶南方工程技术有限公司 | Cable lead-in wire seal device under vacuum positive pressure and negative pressure |
| US20140314604A1 (en) * | 2013-04-23 | 2014-10-23 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Compressor |
| CN104676188A (en) * | 2014-12-12 | 2015-06-03 | 中国海洋石油总公司 | Internal-expansion type hydraulic boosting plugging device for submarine pipeline |
| CN205038016U (en) * | 2015-09-17 | 2016-02-17 | 青岛华涛汽车模具有限公司 | Airtight floating shutoff that detects machine of car intake pipe |
| CN205401702U (en) * | 2016-02-29 | 2016-07-27 | 无锡烨隆精密机械有限公司 | Carve sealed dabber of formula internal expanding to one side |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071797A (en) * | 2016-11-10 | 2018-05-25 | 常州星宇车灯股份有限公司 | A kind of adaptive dibit fastening sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105697779B (en) | 2018-05-25 |
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Address after: 214187 Luoshe matching area, Huishan Economic Development Zone, Wuxi, Jiangsu Patentee after: Wuxi Yalong precision machinery Limited by Share Ltd Address before: 214000 Luosi double Temple Industrial Park, Huishan District, Wuxi, Jiangsu, China Patentee before: Yelong Precision Machinery Co., Ltd. |