CN102252131A - Internal pressure self-sealing isolation transmission device - Google Patents
Internal pressure self-sealing isolation transmission device Download PDFInfo
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- CN102252131A CN102252131A CN2011101541330A CN201110154133A CN102252131A CN 102252131 A CN102252131 A CN 102252131A CN 2011101541330 A CN2011101541330 A CN 2011101541330A CN 201110154133 A CN201110154133 A CN 201110154133A CN 102252131 A CN102252131 A CN 102252131A
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- ring
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- sealing
- pressure self
- transmission device
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Abstract
The invention discloses an internal pressure self-sealing isolation transmission device comprising a valve cover, a valve rod, an internal pressure self-sealing ring and a floating isolation ring, wherein the valve rod is arranged in the valve cover, the floating isolation ring is arranged in the valve cover and sleeved on the valve rod and is simultaneously in sealing fit with the valve cover and the valve rod, and an axial limiting table is formed in the valve cover; the internal pressure self-sealing ring is sleeved on the valve rod, arranged between the floating isolation ring and the axial limiting table, and provided with through holes for connecting two sides of the internal pressure self-sealing ring; and corresponding side sealing surfaces are arranged between the internal pressure self-sealing ring and the floating isolation ring. The anti-leakage performance of the isolation transmission device can be further improved, and higher security is achieved.
Description
Technical field
The present invention relates to a kind of internal-pressure self-sealing and isolate transmission device.
Background technique
In power transmission process, especially under nuclear industry, the hypertoxic environment, should realize the mechanokinetic transmission, avoid leaking of harmful matter again, need to use sealed gearing device.
Existing sealed gearing device such as Chinese patent 200920238041.9 disclose a kind of isolating seal transmission device, this isolating seal transmission device is in the mechanokinetic transmittance process, can play the effective isolation seal action, in this structure, what play the isolating seal effect is isolating seal transmission shield, still might cause leakage in the course of the work, its Security still remains to be improved.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, provide a kind of internal-pressure self-sealing to isolate transmission device, the present invention can further improve the anti-leak performance of isolating transmission device, and Security is higher.
Its technological scheme is as follows.
A kind of internal-pressure self-sealing is isolated transmission device, comprise valve gap, valve rod, internal-pressure self-sealing ring and the isolating ring that floats, valve rod is located in the valve gap, and unsteady isolating ring is located in the valve gap and is enclosed within on the valve rod, the isolating ring that floats cooperates with valve gap, valve stem seal simultaneously, is formed with the axial limiting platform in the valve gap; The internal-pressure self-sealing ring set is on valve rod, and the internal-pressure self-sealing ring is provided with through hole its both sides are communicated between unsteady isolating ring and axial limiting platform on the internal-pressure self-sealing ring; Be provided with corresponding side sealing face between internal-pressure self-sealing ring and the unsteady isolating ring.
Below the further technological scheme of the present invention is described.
Described internal-pressure self-sealing ring is equipped with and the corresponding inclined-plane that cooperates of described unsteady isolating ring with respect to interior ring, the outer shroud of described unsteady isolating ring one side, and described side sealing face cooperates the inclined-plane for this.
Described cooperation inclined-plane becomes 30 degree to 60 degree angles with respect to the axis of described valve rod.
The cross-section area of described through hole is 3% to 10% of a described internal-pressure self-sealing ring cross-section area.
Described unsteady isolating ring comprises first bezel ring,, second bezel ring,, adjusting screw and inner seal ring, exterior seal ring, first bezel ring, is relative with second bezel ring,, first bezel ring, is connected by adjusting screw and is provided with betwixt with second bezel ring, regulates the gap, form interior seal groove and the external sealed groove that has the inclined-plane between first bezel ring, and second bezel ring,, inner seal ring, exterior seal ring place respectively in interior seal groove, the external sealed groove.
Described internal-pressure self-sealing ring forms external sealed face, inner sealing surface with respect to the outer wall of described valve gap correspondence, described internal-pressure self-sealing ring respectively with respect to the inwall of described valve rod correspondence.
Described internal-pressure self-sealing ring also is respectively equipped with outer conical surface, internal conical surface with respect to the outer wall of described valve gap correspondence, described internal-pressure self-sealing ring with respect to the inwall of described valve rod correspondence, described external sealed face, inner sealing surface are cylindrical, and outer conical surface is spent to the slanted angles of 7 degree with respect to all forming 1 between the described inner sealing surface with respect to described external sealed face, internal conical surface.
Below advantage of the present invention or principle are described:
1, in normal operation, the pressure of unsteady isolating ring both sides is in metastable state, in the valve rod course of action, unsteady isolating ring can move up and down and the pressure balance of the isolating ring both sides that keep floating, at this moment, the internal-pressure self-sealing ring is provided with through hole, and the pressure of its both sides also keeps relative equilibrium, and the internal-pressure self-sealing ring does not produce effect; If the flexible sealing cover produces and to break and during decompression, will float isolating ring and internal-pressure self-sealing ring of pipeline pressure is pressed together, and by corresponding side sealing face seal between internal-pressure self-sealing ring and the unsteady isolating ring, the pressure reduction of its both sides is big more, sealing effect rises, effectively avoid harmful matter further to leak, improved internal-pressure self-sealing and isolated the Security of transmission device;
2, unsteady isolating ring comprises first bezel ring,, second bezel ring,, regulate distance between first bezel ring,, second bezel ring, by adjusting screw, it is the width of interior seal groove of can regulate and external sealed groove, owing to also have the inclined-plane on interior seal groove and the external sealed groove, the change width of interior seal groove and external sealed groove, be that can regulate inner seal ring, exterior seal ring move radial direction, and then regulate the degree of tightness that the isolating ring that floats cooperates with valve gap, valve rod;
3, the external sealed face of internal-pressure self-sealing ring, inner sealing surface cooperate with valve gap, valve rod respectively, outer conical surface is spent to the slanted angles of 7 degree with respect to all forming 1 between the described inner sealing surface with respect to described external sealed face, internal conical surface, reduce the area of contact of internal-pressure self-sealing ring and valve gap, valve rod, improve its sealing effect.
Description of drawings
Fig. 1 is the structural drawing that the described internal-pressure self-sealing of the embodiment of the invention is isolated transmission device;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the structural drawing of unsteady isolating ring;
Fig. 4 is the structural drawing of internal-pressure self-sealing ring;
Description of reference numerals:
1, valve gap, 2, valve rod, 3, isolating ring floats, 4, limit dais, 5, the internal-pressure self-sealing ring, 6, through hole, 7, position limit pin, 8, first bezel ring,, 9, second bezel ring,, 10, inner seal ring, 11, exterior seal ring, 12, adjusting screw, 13, regulate the gap, 14, the flexible sealing cover, 15, side sealing face, 16, inner sealing surface, 17, the external sealed face.
Embodiment
Below embodiments of the invention are elaborated.
As shown in Figures 1 to 4, a kind of internal-pressure self-sealing is isolated transmission device, comprise valve gap 1, valve rod 2, internal-pressure self-sealing ring 5 and the isolating ring 3 that floats, valve rod 2 is located in the valve gap 1, the isolating ring 3 that floats is located in the valve gap 1 and is enclosed within on the valve rod 2, the isolating ring 3 that floats is sealed and matched with valve gap 1, valve rod 2 simultaneously, is formed with axial limiting platform 4 in the valve gap 1; Internal-pressure self-sealing ring 5 is enclosed within on the valve rod 2, and internal-pressure self-sealing ring 5 is provided with through hole 6 its both sides are communicated between unsteady isolating ring 3 and axial limiting platform 4 on internal-pressure self-sealing ring 5; Be provided with corresponding side sealing face between internal-pressure self-sealing ring 5 and the unsteady isolating ring 3.
Wherein, be provided with position limit pin 7 on limit dais 4, internal-pressure self-sealing ring 5 is spacing by this position limit pin 7; Described internal-pressure self-sealing ring 5 is equipped with and the described unsteady isolating ring 3 corresponding inclined-planes that cooperate with respect to interior ring, the outer shroud of described unsteady isolating ring 3 one sides, and described side sealing face cooperates the inclined-plane for this.Described cooperation inclined-plane becomes 30 degree to 60 degree angles with respect to the axis of described valve rod 2.The cross-section area of described through hole 6 is 3% to 10% of described internal-pressure self-sealing ring 5 cross-section areas.
Described unsteady isolating ring 3 comprises first bezel ring, 8, second bezel ring, 9, adjusting screw 12 and inner seal ring 10, exterior seal ring 11, first bezel ring, 8 is relative with second bezel ring, 9, first bezel ring, 8 is connected by adjusting screw 12 and is provided with betwixt with second bezel ring, 9 regulates gap 13, form interior seal groove and the external sealed groove that has the inclined-plane between first bezel ring, 8 and second bezel ring, 9, inner seal ring 10, exterior seal ring 11 place respectively in interior seal groove, the external sealed groove.
Internal-pressure self-sealing ring 5 forms external sealed face 17, inner sealing surface 16 with respect to outer wall, the internal-pressure self-sealing ring 5 of valve gap 1 correspondence respectively with respect to the inwall of valve rod 2 correspondences.Internal-pressure self-sealing ring 5 also is respectively equipped with outer conical surface, internal conical surface with respect to outer wall, the internal-pressure self-sealing ring 5 of valve gap 1 correspondence with respect to the inwall of valve rod 2 correspondences, external sealed face 17, inner sealing surface 16 are cylindrical, outer conical surface with respect to external sealed face 17, internal conical surface with respect to the slanted angles that all form 4 degree between the inner sealing surface 16.
Present embodiment has following advantage:
1, in normal operation, the pressure of unsteady isolating ring 3 both sides is in metastable state, in valve rod 2 course of action, the isolating ring 3 that floats can move up and down and the pressure balance of isolating ring 3 both sides that keep floating, at this moment, internal-pressure self-sealing ring 5 is provided with through hole 6, and the pressure of its both sides also keeps relative equilibrium, and internal-pressure self-sealing ring 5 does not produce effect; If flexible sealing cover 14 produces and breaks and during decompression, will float isolating ring 3 of pipeline pressure is pressed together with internal-pressure self-sealing ring 5, and by corresponding side sealing face seal between internal-pressure self-sealing ring 5 and the unsteady isolating ring 3, the pressure reduction of its both sides is big more, sealing effect rises, effectively avoid harmful matter further to leak, improved internal-pressure self-sealing and isolated the Security of transmission device;
2, unsteady isolating ring 3 comprises first bezel ring, 8, second bezel ring, 9, by the distance between adjusting screw 12 adjustings first bezel ring, 8, second bezel ring, 9, it is the width of interior seal groove of can regulate and external sealed groove, owing to also have the inclined-plane on interior seal groove and the external sealed groove, the change width of interior seal groove and external sealed groove, be that can regulate inner seal ring 10, exterior seal ring 11 move radial direction, and then regulate the degree of tightness that the isolating ring 3 that floats cooperates with valve gap 1, valve rod 2;
3, the external sealed face 17 of internal-pressure self-sealing ring 5, inner sealing surface 16 cooperate with valve gap 1, valve rod 2 respectively, outer conical surface with respect to external sealed face 17, internal conical surface with respect to all forming slanted angle between the inner sealing surface 16, reduce the area of contact of internal-pressure self-sealing ring 5 and valve gap 1, valve rod 2, improve its sealing effect.
Be specific embodiments of the invention only below, do not limit protection scope of the present invention with this; Any replacement and the improvement done on the basis of not violating the present invention's design all belong to protection scope of the present invention.
Claims (7)
1. an internal-pressure self-sealing is isolated transmission device, it is characterized in that, comprise valve gap, valve rod, internal-pressure self-sealing ring and the isolating ring that floats, valve rod is located in the valve gap, unsteady isolating ring is located in the valve gap and is enclosed within on the valve rod, the isolating ring that floats cooperates with valve gap, valve stem seal simultaneously, is formed with the axial limiting platform in the valve gap; The internal-pressure self-sealing ring set is on valve rod, and the internal-pressure self-sealing ring is provided with through hole its both sides are communicated between unsteady isolating ring and axial limiting platform on the internal-pressure self-sealing ring; Be provided with corresponding side sealing face between internal-pressure self-sealing ring and the unsteady isolating ring.
2. internal-pressure self-sealing is isolated transmission device according to claim 1, it is characterized in that, described internal-pressure self-sealing ring is equipped with and the corresponding inclined-plane that cooperates of described unsteady isolating ring with respect to interior ring, the outer shroud of described unsteady isolating ring one side, and described side sealing face cooperates the inclined-plane for this.
3. isolate transmission device as internal-pressure self-sealing as described in the claim 2, it is characterized in that, described cooperation inclined-plane becomes 30 degree to 60 degree angles with respect to the axis of described valve rod.
As in the claim 1 to 3 as described in each internal-pressure self-sealing isolate transmission device, it is characterized in that the cross-section area of described through hole is 3% to 10% of a described internal-pressure self-sealing ring cross-section area.
As in the claim 1 to 3 as described in each internal-pressure self-sealing isolate transmission device, it is characterized in that, described unsteady isolating ring comprises first bezel ring,, second bezel ring,, adjusting screw and inner seal ring, exterior seal ring, first bezel ring, is relative with second bezel ring,, first bezel ring, is connected by adjusting screw and is provided with betwixt with second bezel ring, regulates the gap, form interior seal groove and the external sealed groove that has the inclined-plane between first bezel ring, and second bezel ring,, inner seal ring, exterior seal ring place respectively in interior seal groove, the external sealed groove.
As in the claim 1 to 3 as described in each internal-pressure self-sealing isolate transmission device, it is characterized in that described internal-pressure self-sealing ring forms external sealed face, inner sealing surface with respect to the outer wall of described valve gap correspondence, described internal-pressure self-sealing ring respectively with respect to the inwall of described valve rod correspondence.
7. isolate transmission device as internal-pressure self-sealing as described in the claim 6, it is characterized in that, described internal-pressure self-sealing ring also is respectively equipped with outer conical surface, internal conical surface with respect to the outer wall of described valve gap correspondence, described internal-pressure self-sealing ring with respect to the inwall of described valve rod correspondence, described external sealed face, inner sealing surface are cylindrical, and outer conical surface is spent to the slanted angles of 7 degree with respect to all forming 1 between the described inner sealing surface with respect to described external sealed face, internal conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101541330A CN102252131B (en) | 2011-06-09 | 2011-06-09 | Internal pressure self-sealing isolation transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101541330A CN102252131B (en) | 2011-06-09 | 2011-06-09 | Internal pressure self-sealing isolation transmission device |
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| Publication Number | Publication Date |
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| CN102252131A true CN102252131A (en) | 2011-11-23 |
| CN102252131B CN102252131B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101541330A Expired - Fee Related CN102252131B (en) | 2011-06-09 | 2011-06-09 | Internal pressure self-sealing isolation transmission device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265457A (en) * | 1979-02-14 | 1981-05-05 | Neptune Glenfield Limited | Shaft seals |
| GB2186952A (en) * | 1986-02-14 | 1987-08-26 | Hattersley Heaton Ltd | A ball valve |
| CN101050827A (en) * | 2006-04-03 | 2007-10-10 | 林德宽 | Isolation seal driving opening and closing device for valve |
| CN201187629Y (en) * | 2008-02-19 | 2009-01-28 | 江苏大学 | High pressure instrument ball valve rod seal apparatus with self-tightening type seal structure |
| CN201547377U (en) * | 2009-10-28 | 2010-08-11 | 林德宽 | Isolation sealed transmission device |
| CN202100819U (en) * | 2011-06-09 | 2012-01-04 | 林德宽 | Internal-pressure self-sealing isolating transmission gear |
-
2011
- 2011-06-09 CN CN2011101541330A patent/CN102252131B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265457A (en) * | 1979-02-14 | 1981-05-05 | Neptune Glenfield Limited | Shaft seals |
| GB2186952A (en) * | 1986-02-14 | 1987-08-26 | Hattersley Heaton Ltd | A ball valve |
| CN101050827A (en) * | 2006-04-03 | 2007-10-10 | 林德宽 | Isolation seal driving opening and closing device for valve |
| CN201187629Y (en) * | 2008-02-19 | 2009-01-28 | 江苏大学 | High pressure instrument ball valve rod seal apparatus with self-tightening type seal structure |
| CN201547377U (en) * | 2009-10-28 | 2010-08-11 | 林德宽 | Isolation sealed transmission device |
| CN202100819U (en) * | 2011-06-09 | 2012-01-04 | 林德宽 | Internal-pressure self-sealing isolating transmission gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102252131B (en) | 2012-11-07 |
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Granted publication date: 20121107 Termination date: 20140609 |
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