CN203892636U - Seal structure based on one-way stop valve - Google Patents
Seal structure based on one-way stop valve Download PDFInfo
- Publication number
- CN203892636U CN203892636U CN201420263397.9U CN201420263397U CN203892636U CN 203892636 U CN203892636 U CN 203892636U CN 201420263397 U CN201420263397 U CN 201420263397U CN 203892636 U CN203892636 U CN 203892636U
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- stop valve
- cavity
- seal ring
- valve
- unidirectional
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Abstract
The utility model discloses a seal structure based on an one-way stop valve. The seal structure comprises a stop valve flap, a stop valve seal ring, a tightening screw, an one-way valve rod and a cavity. The stop valve flap is fixedly connected to the stop valve seal ring and is provided with a fixing groove used for fixing the tightening screw in the direction facing to the cavity; the central position of the stop valve seal ring is provided with a through hole used for arranging the tightening screw in a penetrated manner, and the stop valve seal ring is tightly arranged between the stop valve flap and the one-way valve rod in a fitted manner; the one-way valve rod is tightly fitted to the stop valve seal ring and is provided with a fixing hold used for fixing the tightening screw; the tightening screw is used for fixing the one-way valve rod, the stop valve seal ring and the stop valve flap in a tightly-fitted manner; the port of the cavity is provided with a conical cavity structure stretching towards the port. By the aid of the seal structure, the problem of seal failure caused by structural imbalance of the one-way valve of a seal structure after low-temperature medium is injected for several times is solved.
Description
Technical field
The utility model relates to sealing configuration field, relates more specifically to a kind of sealing configuration based on unidirectional stop valve.
Background technique
At present, sealing configuration (seal arrangement) is widely used in the fields such as Aeronautics and Astronautics, military affairs, industry, for common commercial Application, sealing configuration can be used in sealing up for safekeeping, preserve, transporting of cryogenic media, cryogenic media wherein can be: the media such as LNG (Liquefied Natural Gas, LNG Liquefied natural gas), liquid nitrogen, liquid argon.
Conventionally, be applied to the sealing configuration of above-mentioned cryogenic media, its filing provision all adopts one-way valve to add the sealing of lip accumulation of energy ring structure, and one-way valve relies on polytetrafluoroethylene gasket or poly-trifluoro-ethylene packing ring to realize sealing in the situation that having interior pressure.
But, the shortcoming of existing cryogenic media filing provision is that structural design lacks whole consideration, and sealing configuration size is use repeatly repeatedly, uses the sealing configuration of one-way valve after realizing repeatedly filling, one-way valve structures there will be structural disequilibrium, causes the seal failure of ring structure.From scene filling data statistics, existing sealing configuration is merely able to guarantee that 2500 times to 4000 times filling do not occur that cryogenic media leaks, once Cryogenic Filling equipment occurs that after leakage, cryogenic media can eject from filling apparatus jointing, cause operator injured, have serious potential safety hazard.
Therefore, there is unbalance of structure in sealing configuration its one-way valve after repeatedly annotating that how to solve cryogenic media, causes seal failure, just becomes technical problem urgently to be resolved hurrily.
Model utility content
In view of this, technical problem to be solved in the utility model has been to provide a kind of sealing configuration based on unidirectional stop valve, to solve sealing configuration its one-way valve after repeatedly annotating of cryogenic media, occurs unbalance of structure, causes the problem of seal failure.
In order to solve the problems of the technologies described above, the utility model discloses a kind of sealing configuration based on unidirectional stop valve, comprising: stop valve clack, stop valve seal ring, fastening screw trip bolt, one-way valve valve rod and cavity, wherein,
Described stop valve clack, is fixedly connected with this stop valve seal ring laminating, and the shape of the shape of this stop valve clack and the port of this cavity matches, and this stop valve clack is provided with for fixing the fixed groove of this fastening screw trip bolt towards the direction of cavity cavity;
Described stop valve seal ring, is O-ring seal, and the center portion of this stop valve seal ring is provided with the through hole that this fastening screw trip bolt is set for running through, and fits tightly and be arranged at this stop valve clack between the end face of this cavity cavity and this one-way valve valve rod;
Described one-way valve valve rod, end face and this stop valve seal ring towards the port direction of this cavity fit tightly, and this one-way valve valve rod is provided with for fixing the fixed hole of this fastening screw trip bolt towards the end face center of the port direction of this cavity, by this fastening screw trip bolt, is fixedly connected with this stop valve clack;
Described fastening screw trip bolt, by the fixed hole on this one-way valve valve rod, through hole on stop valve seal ring and the fixed groove on stop valve clack, fits tightly fixing by this one-way valve valve rod, stop valve seal ring and stop valve clack;
Described cavity, the inner perfusion channel that forms cavity type, this perfusion channel forms the conical cavity structure of shrinking towards port direction in the port of this cavity.
Wherein, preferably, the perfusion channel of the described cavity type of the unidirectional cutoff valve core being comprised of described stop valve clack, stop valve seal ring, fastening screw trip bolt, one-way valve valve rod in described cavity moves towards the port direction of described this cavity.
Wherein, preferably, described unidirectional stop valve valve core movement is to the conical surface place in the conical cavity structure in described cavity, and this stop valve seal ring in this unidirectional cutoff valve core contact with the described conical surface afterwards and seals.
Wherein, preferably, in described cavity, in the perfusion channel of formed described cavity type, the sealing surface angle that is positioned at the conical cavity structure of this cavity port is 60 °.
Wherein, preferably, the sealed diameter of the perfusion channel of described cavity type is 33.5mm.
Wherein, preferably, described stop valve clack is 22mm towards the face size of the perfusion channel of the described cavity type of described cavity.
Wherein, preferably, the thickness of described stop valve seal ring is 2.8 ± 0.05mm.
Compared with prior art, a kind of sealing configuration based on unidirectional stop valve described in the utility model, has reached following effect:
1) the utility model is by being provided with the conical cavity structure of the conical surface in the perfusion channel in cavity, when the cone structure of stop valve seal ring and filling vias inner walls comes in contact, because filling apparatus inner cryogenic pressure medium is greater than external air pressure, thereby this stop valve seal ring outward edge and the cone structure compression of filling vias inner walls are realized to sealing purpose.There is unbalance of structure in sealing configuration its one-way valve after repeatedly annotating that efficiently solves cryogenic media, causes the problem of seal failure.
2) the utility model is by rationally reducing stop valve clack end face diameter, having guaranteed when being subject to excessive non-axial applied force not can unstability, simultaneously, rationally increase stop valve seal ring thickness, guaranteed to there will not be the inhomogeneous situation of seal ring decrement when being subject to excessive non-axial applied force.
3) the utility model is effectively brought up to the above reliable levels of leaking of occurring of filling 12000 times by the reliable level that causes seal failure to occur for 4000 times from annotating leaking.
Certainly, implement arbitrary product of the present utility model and must not necessarily need to reach above-described all technique effects simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a part of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural drawing of the sealing configuration based on unidirectional stop valve described in the utility model embodiment.
Fig. 2 is unidirectional cutoff valve core described in the utility model embodiment at the interior motion of described cavity 9 schematic diagram that seals.
Fig. 3 is the preferred concrete structure figure of cavity 9 described in the utility model embodiment.
Fig. 4 is the preferred concrete structure figure of stop valve clack 17 described in the utility model embodiment.
Fig. 5 is the preferred concrete structure figure of stop valve seal ring 18 described in the utility model embodiment.
Embodiment
As used some vocabulary in the middle of specification and claim, censure specific components.Those skilled in the art should understand, and hardware manufacturer may be called same assembly with different nouns.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the difference in function is used as the criterion of distinguishing with assembly.If " comprising " mentioned in the middle of specification and claim is in the whole text an open language, therefore should be construed to " comprise but be not limited to "." roughly " refer to that in receivable margin of error, those skilled in the art can solve the technical problem within the scope of certain error, reach described technique effect substantially.In addition, " couple " word and comprise directly any and electric property coupling means indirectly at this.Therefore, if describe a first device in literary composition, be coupled to one second device, represent that described first device can directly be electrically coupled to described the second device, or be indirectly electrically coupled to described the second device by other devices or the means that couple.Specification subsequent descriptions is for implementing better embodiment of the present utility model, and right described description is to illustrate that rule of the present utility model is object, not in order to limit scope of the present utility model.Protection domain of the present utility model is when being as the criterion depending on the claims person of defining.
As shown in Figure 1, be a kind of sealing configuration based on unidirectional stop valve described in the utility model, comprising: unidirectional cutoff valve core and cavity 9, wherein,
Described unidirectional cutoff valve core comprises: stop valve clack 17, stop valve seal ring 18, fastening screw trip bolt 40, one-way valve valve rod 21, wherein,
Stop valve clack 17, be fixedly connected with these stop valve seal ring 18 laminatings, the shape of the port of the shape of this stop valve clack 17 and this cavity 9 matches, and this stop valve clack 17 is provided with for fixing the fixed groove of this fastening screw trip bolt 40 towards the direction of cavity 9 cavitys.
Stop valve seal ring 18, for O-ring seal, the center portion of this stop valve seal ring 18 is provided with the through hole that this fastening screw trip bolt 40 is set for running through, and fits tightly and be arranged at this stop valve clack 17 between the end face of these cavity 9 cavitys and this one-way valve valve rod 21.
One-way valve valve rod 21, end face and this stop valve seal ring towards the port direction of this cavity 9 fit tightly, and this one-way valve valve rod 21 is provided with towards the end face center of the port direction of this cavity 9 for fixing the fixed hole of this fastening screw trip bolt 40, by this fastening screw trip bolt 40, is fixedly connected with this stop valve clack 17.
Fastening screw trip bolt 40, by the fixed hole on this one-way valve valve rod 21, through hole on stop valve seal ring 18 and the fixed groove on stop valve clack 17, fits tightly fixing by this one-way valve valve rod 21, stop valve seal ring 18 and stop valve clack 17.
Cavity 9, the inner perfusion channel that forms cavity type, this perfusion channel forms the cone structure of shrinking towards opening direction at the opening of this cavity 9, and moves in the cavity that forms in this cavity 9 of this unidirectional cutoff valve core.
In the present embodiment, as shown in Figure 2, the direction that the unidirectional cutoff valve core being comprised of stop valve clack 17, stop valve seal ring 18, fastening screw trip bolt 40, one-way valve valve rod 21 marks arrow along the black in Fig. 2 is moved, when the cone structure of this stop valve seal ring 18 and filling vias inner walls comes in contact (the S1 region in Fig. 2), because filling apparatus inner cryogenic pressure medium is greater than external air pressure, thereby these stop valve seal ring 18 outward edges and the cone structure compression of filling vias inner walls are realized to sealing purpose.Although when filing provision completes after filling action, stop valve seal ring 18 can be worn, but due to the conical cavity structure in (the S1 region in Fig. 2) in the present embodiment, the degree of wear of stop valve seal ring 18 can be down to minimumly, further increase filling number of times.
As the optimal way in the present embodiment:
As shown in Figure 3, in the perfusion channel of cavity 9 interior formed cavity types, the sealing surface angle that is positioned at the conical cavity structure of these cavity 9 ports is 60 °, internal channel sealed diameter Φ 33.5mm.
As shown in Figure 4, this stop valve clack 17 is Φ 22mm towards the face size of the perfusion channel of the cavity type of cavity 9, is less than current normally used stop valve clack end face Φ 24mm.
As shown in Figure 5, the thickness of this stop valve seal ring 18 is 2.8 ± 0.05mm, is greater than current normally used stop valve seal ring thickness 2.0 ± 0.05mm.
It should be noted that, too much reduce stop valve clack end face diameter and will cause stop valve clack strength decreased, meeting unstability while being subject to excessive non-axial applied force, too much increasing stop valve seal ring thickness can cause stop valve spool bulk strength inadequate, while being subject to excessive non-axial applied force, there will be the inhomogeneous situation of seal ring decrement, cause seal failure.
Due to the above-mentioned optimal way in the present embodiment, under sealing surface angle is 60 °, internal channel sealed diameter Φ 33.5mm condition, stop valve clack end face diameter Φ 22mm, stop valve seal ring thickness are 2.8 ± 0.05mm is designed and sized to optimum design.
And, under sealing surface angle is 60 °, internal channel sealed diameter Φ 33.5mm condition, the application is by reducing stop valve clack 17 end face diameters, increasing the measures such as stop valve seal ring 18 thickness, improved the reliability of stop valve sealing, from annotating, occurred that the reliable level of leakage is brought up to the reliable level that 12000 above appearance of filling are leaked for 4000 times.Too small or the cut-off seal ring thickness of stop valve face size is crossed the stability that mostly can not guarantee stop valve structure, adopts the application's optimal way to reach raising sealing reliability object, eliminates potential potential safety hazard.
Compared with prior art, a kind of sealing configuration based on unidirectional stop valve described in the utility model, has reached following effect:
1) the utility model is by being provided with the conical cavity structure of the conical surface in the perfusion channel in cavity, when the cone structure of stop valve seal ring and filling vias inner walls comes in contact, because filling apparatus inner cryogenic pressure medium is greater than external air pressure, thereby this stop valve seal ring outward edge and the cone structure compression of filling vias inner walls are realized to sealing purpose.There is unbalance of structure in sealing configuration its one-way valve after repeatedly annotating that efficiently solves cryogenic media, causes the problem of seal failure.
2) the utility model is by rationally reducing stop valve clack end face diameter, having guaranteed when being subject to excessive non-axial applied force not can unstability, simultaneously, rationally increase stop valve seal ring thickness, guaranteed to there will not be the inhomogeneous situation of seal ring decrement when being subject to excessive non-axial applied force.
3) the utility model is effectively brought up to the above reliable levels of leaking of occurring of filling 12000 times by the reliable level that causes seal failure to occur for 4000 times from annotating leaking.
Also it should be noted that, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, commodity or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, commodity or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, commodity or the equipment that comprises described key element and also have other identical element.
It will be understood by those skilled in the art that embodiment of the present utility model can be provided as method, system or computer program.Therefore, the utility model can adopt complete hardware implementation example, implement software example or in conjunction with the embodiment's of software and hardware aspect form completely.And the utility model can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code one or more.
The foregoing is only embodiment of the present utility model, be not limited to the utility model.To those skilled in the art, the utility model can have various modifications and variations.All any modifications of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present utility model within spirit of the present utility model and principle.
Claims (7)
1. the sealing configuration based on unidirectional stop valve, is characterized in that, comprising: stop valve clack, stop valve seal ring, fastening screw trip bolt, one-way valve valve rod and cavity, wherein,
Described stop valve clack, is fixedly connected with this stop valve seal ring laminating, and the shape of the shape of this stop valve clack and the port of this cavity matches, and this stop valve clack is provided with for fixing the fixed groove of this fastening screw trip bolt towards the direction of cavity cavity;
Described stop valve seal ring, is O-ring seal, and the center portion of this stop valve seal ring is provided with the through hole that this fastening screw trip bolt is set for running through, and fits tightly and be arranged at this stop valve clack between the end face of this cavity cavity and this one-way valve valve rod;
Described one-way valve valve rod, end face and this stop valve seal ring towards the port direction of this cavity fit tightly, and this one-way valve valve rod is provided with for fixing the fixed hole of this fastening screw trip bolt towards the end face center of the port direction of this cavity, by this fastening screw trip bolt, is fixedly connected with this stop valve clack;
Described fastening screw trip bolt, by the fixed hole on this one-way valve valve rod, through hole on stop valve seal ring and the fixed groove on stop valve clack, fits tightly fixing by this one-way valve valve rod, stop valve seal ring and stop valve clack;
Described cavity, the inner perfusion channel that forms cavity type, this perfusion channel forms the conical cavity structure of shrinking towards port direction in the port of this cavity.
2. the sealing configuration based on unidirectional stop valve as claimed in claim 1, it is characterized in that, the perfusion channel of the described cavity type of the unidirectional cutoff valve core being comprised of described stop valve clack, stop valve seal ring, fastening screw trip bolt, one-way valve valve rod in described cavity moves towards the port direction of described this cavity.
3. the sealing configuration based on unidirectional stop valve as claimed in claim 2, it is characterized in that, described unidirectional stop valve valve core movement is to the conical surface place in the conical cavity structure in described cavity, and this stop valve seal ring in this unidirectional cutoff valve core contact with the described conical surface afterwards and seals.
4. the sealing configuration based on unidirectional stop valve as claimed in claim 3, is characterized in that, in described cavity, in the perfusion channel of formed described cavity type, the sealing surface angle that is positioned at the conical cavity structure of this cavity port is 60 °.
5. the sealing configuration based on unidirectional stop valve as claimed in claim 4, is characterized in that, the sealed diameter of the perfusion channel of described cavity type is 33.5mm.
6. the sealing configuration based on unidirectional stop valve as claimed in claim 1, is characterized in that, described stop valve clack is 22mm towards the face size of the perfusion channel of the described cavity type of described cavity.
7. the sealing configuration based on unidirectional stop valve as claimed in claim 1, is characterized in that, the thickness of described stop valve seal ring is 2.8 ± 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420263397.9U CN203892636U (en) | 2014-05-21 | 2014-05-21 | Seal structure based on one-way stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420263397.9U CN203892636U (en) | 2014-05-21 | 2014-05-21 | Seal structure based on one-way stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892636U true CN203892636U (en) | 2014-10-22 |
Family
ID=51719041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420263397.9U Withdrawn - After Issue CN203892636U (en) | 2014-05-21 | 2014-05-21 | Seal structure based on one-way stop valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203892636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953763A (en) * | 2014-05-21 | 2014-07-30 | 北京兴世华荣科技发展有限责任公司 | Sealing structure based on non-return stop valve |
-
2014
- 2014-05-21 CN CN201420263397.9U patent/CN203892636U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953763A (en) * | 2014-05-21 | 2014-07-30 | 北京兴世华荣科技发展有限责任公司 | Sealing structure based on non-return stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141022 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |