CN206708469U - A kind of LNG high pressure low temperatures check valve peculiar to vessel - Google Patents
A kind of LNG high pressure low temperatures check valve peculiar to vessel Download PDFInfo
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- CN206708469U CN206708469U CN201720502618.7U CN201720502618U CN206708469U CN 206708469 U CN206708469 U CN 206708469U CN 201720502618 U CN201720502618 U CN 201720502618U CN 206708469 U CN206708469 U CN 206708469U
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- bonnet
- valve body
- valve
- medium channel
- globe joint
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Abstract
A kind of LNG high pressure low temperatures check valve peculiar to vessel, including valve body and bonnet, slided in body cavity and be provided with valve element, valve element is pressed on one end of body cavity by the pretightning force of spring blocks medium channel to block the free flow of medium channel, first globe joint is fixed on valve body by the first collar nut, the through hole connected with medium channel is offered on first globe joint, second globe joint is fixed on bonnet by the second collar nut, and the through hole connected with medium channel is offered on the second globe joint.The application is applied to ultralow temperature high pressure operating mode, and valve body is connected through a screw thread with bonnet, assembles butt welding after pressure testing, ensures high pressure lower valve body sealing security.For check valve connection inlet and outlet using threaded connection, valve mechanism is compact, shock resistance and it is anti-wave that performance is strong, and be easy to the replacing of valve.Valve element is connected by spring with bonnet, and spring force can compensate for the influence of valve element own wt, avoid medium from flowing backwards, and valve installation is not limited by setting angle.
Description
Technical field
Marine valve manufacturing field is the utility model is related to, more particularly, to a kind of LNG high pressure low temperatures check valve peculiar to vessel.
Background technology
Flourished recently as inland river, coastal, ocean LNG ship oceangoing ship, LNG corollary apparatus and ships that transport peculiar to vessel are to low
The application demand of warm valve member is more urgent.Subzero valve is also more and more to be applied to the fields such as High Pressure Difference, long-life, high reliability
Close.At present, domestic traditional LNG high pressure low temperature check valves product structure is complicated, maintenance and part replacement inconvenience, it is anti-wave,
Shock resistance deficiency, is not suitable for ship and ship environment uses.
A kind of LNG high pressure low temperatures check valve peculiar to vessel is the utility model is related to, the check valve includes valve body, valve body internal passage
Interior to be provided with the valve element that slided relatively, valve element rear end is pressed in by spring on the step of bonnet interior bone, and the bonnet is with going out
Collar nut is using threaded connection at mouthful, and collar nut connects with the outside step of globe joint, by the sphere top of globe joint
In, to realize sealing, described valve body import end outside passes through screw thread and entrance collar nut connects on the conical surface of bonnet rear end
Connect, collar nut is connected with the step on the outside of globe joint, by globe joint front end sphere peak on the conical surface of valve body front end with
Realize sealing function.Valve body is connected through a screw thread with bonnet, assembles butt welding after pressure testing, ensures high pressure lower valve body sealing security.
Check valve connection inlet and outlet and install snap joint using threaded connection, and valve mechanism is compact, shock resistance and anti-wave performance
By force, and it is easy to the replacing of valve.Valve element is connected by spring with bonnet, and spring force can compensate for the influence of valve element own wt, keep away
Exempt from medium refluence, valve installation is not limited by setting angle.
Utility model content
The purpose of this utility model be for solve existing for existing check valve it is complicated, bulk is larger, shock resistance
A kind of and anti-the problem of waving performance deficiency, maintenance and part replacement inconvenience, there is provided LNG high pressure low temperatures check valve peculiar to vessel.
To solve the deficiency of above-mentioned technical problem, used technical scheme is the utility model：
A kind of LNG high pressure low temperatures check valve peculiar to vessel, including valve body and bonnet, bonnet form close on one end of valve body
Seal structure, a medium channel flowed through for medium being distributed along its length, valve are offered on described valve body and bonnet
Slided in intracoelomic cavity and be provided with valve element, valve element is pressed on one end of body cavity by the pretightning force of spring and blocks medium channel
To block the free flow of medium channel, as spring by pretightning force by valve element front end peak on the internal channel conical surface of valve body with
The cut-out of medium is realized, the conducting of medium channel can be realized when medium channel internal pressure power overcomes acting force of the spring, valve body is remote
The first globe joint is connected with one end of bonnet, medium channel is machined with and the first globe joint in one end away from bonnet
The conical surface of mutual cooperation, the first globe joint are fixed on valve body by the first collar nut, are offered on the first globe joint
The through hole connected with medium channel, it is to be connected on the outside of described valve body import end by screw thread with the first collar nut, the
One collar nut is connected with the step on the outside of the first globe joint, and the first globe joint front end sphere is peaked at into valve body front end
To realize sealing function on the conical surface, bonnet is connected with the second globe joint on one end away from valve body, and medium channel is away from valve body
One end in be machined with the conical surface to be cooperated with the second globe joint, the second globe joint is fixed on by the second collar nut
On bonnet, the through hole connected with medium channel is offered on the second globe joint, as bonnet and the second collar nut uses spiral shell
Line connects, and the second collar nut is connected with the outside step of the second globe joint, and the sphere of the second globe joint is peaked at into valve
Sealed on the conical surface of cover back-end with realizing.
One end top of described spring is located on valve element, and the other end top of spring is located on the step of bonnet interior bone.
One end of described bonnet is threaded into valve body, and the binding face of bonnet and valve body welds together, specifically
For be the valve body with bonnet using be threadedly coupled, butt welding connection after assembling examination low pressure.
Described LNG high pressure low temperature check valves, using the conical surface and sphere-contact at the sealing of its valve body and globe joint
Linear sealing type of attachment, sealing are stronger.
Described collar nut, using being threadedly coupled, is easy to trim maintenance and the replacing of globe joint, enhancing with valve body
The whole service life of the valve.
The valve body adds welding manner to be connected with bonnet using screw thread, compact-sized, anti-to wave and shock resistance is stronger,
It is suitable for naval vessel use.
The high pressure low temperature check valve runner uses once-through type structure, can reduce flow resistance when fluid is positive to circulate.
The valve element is connected by spring with bonnet, when the check valve waved with piping or heeling condition under, medium goes out
When mouthful pressure is higher than inlet pressure, valve element can the quick closedown under spring and medium active force, avoid medium from flowing backwards.
The beneficial effects of the utility model are：The utility model is compared with existing check valve, the utility model LNG high pressures
Low temperature check valve is applied to ultralow temperature high pressure operating mode, and valve body is connected through a screw thread with bonnet, assembles butt welding after pressure testing, ensures high pressure
Lower valve body seals security.Check valve connection inlet and outlet install snap joint using threaded connection, and valve mechanism is compact, resists
Impact and it is anti-wave that performance is strong, and be easy to the replacing of valve.Valve element is connected by spring with bonnet, and spring force can compensate for valve element certainly
The influence of body weight, avoids medium from flowing backwards, and valve installation is not limited by setting angle.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Diagram mark：1st, valve body, 2, valve element, 3, spring, 4, bonnet, 5-a, the second collar nut, 6-a, second spherical connect
Head, 5-b, the first collar nut, 6-b, the first globe joint.
Embodiment
Shown in Fig. 1, embodiment is as follows：
A kind of LNG high pressure low temperatures check valve peculiar to vessel, including valve body 1 and bonnet 4, one end of described bonnet 4 pass through screw thread
It is screwed into valve body 1, the binding face of bonnet 4 and valve body 1 welds together, and bonnet 4, which is arranged on one end of valve body 1, forms sealing knot
Structure, a medium channel flowed through for medium being distributed along its length, valve body 1 are offered on described valve body 1 and bonnet 4
Interior intracavitary, which is slided, is provided with valve element 2, and valve element 2 is pressed on closure medium on one end of the inner chamber of valve body 1 by the pretightning force of spring 3 and led to
Road is to block the free flow of medium channel, when medium channel internal pressure power overcomes the active force of spring 3 to realize medium channel
Conducting, one end top of described spring 3 are located on valve element 2, and the other end top of spring 3 is located on the step of the interior bone of bonnet 4,
The first globe joint 6-b is connected with the one end of valve body 1 away from bonnet 4, medium channel is machined with one end away from bonnet 4
The conical surface to be cooperated with the first globe joint 6-b, the first globe joint 6-b are fixed on valve body 1 by the first collar nut 5-b
On, the through hole connected with medium channel is offered on the first globe joint 6-b, bonnet 4 is connected with one end away from valve body 1
Two globe joint 6-a, medium channel are machined with the conical surface to be cooperated with the second globe joint 6-a in one end away from valve body 1,
Second globe joint 6-a is fixed on bonnet 4 by the second collar nut 5-a, is offered on the second globe joint 6-a and medium
The through hole of passage connection.
The LNG high pressure low temperatures check valve peculiar to vessel when mounted, first loads valve element 2 and spring 3 in valve body 1, then
Bonnet 4 is screwed in valve body 1, is connected valve body with bonnet using welding after screwing, by the second globe joint 6-a, second spherical
Joint 6-b is respectively charged into the taper surface of valve body, bonnet, is finally distinguished the second collar nut 5-a, the first collar nut 5-b
Screw in valve body and bonnet, the second collar nut 5-a, the first collar nut 5-b and valve body 1, bonnet 2 are made close using threaded connection
Front cover keeps sealing.
Technical scheme and embodiment and non-limiting cited by the utility model, with the skill cited by the utility model
Art scheme and embodiment are equal or effect same approach is all in the range of the utility model is protected.
Claims (3)
1. a kind of LNG high pressure low temperatures check valve peculiar to vessel, including valve body（1）And bonnet（4）, bonnet（4）Installed in valve body（1）One
Sealing structure is formed on end, it is characterised in that：Described valve body（1）And bonnet（4）On offer one and divide along its length
The medium channel flowed through for medium of cloth, valve body（1）Interior intracavitary is slided and is provided with valve element（2）, valve element（2）Pass through spring（3）'s
Pretightning force is pressed on valve body（1）Medium channel is blocked on one end of inner chamber to block the free flow of medium channel, when medium leads to
Road internal pressure power overcomes spring（3）Active force can realize the conducting of medium channel, valve body（1）Away from bonnet（4）One end it is upper
It is connected with the first globe joint（6-b）, medium channel is away from bonnet（4）One end in be machined with and the first globe joint（6-b）
The conical surface of mutual cooperation, the first globe joint（6-b）Pass through the first collar nut（5-b）It is fixed on valve body（1）On, first is spherical
Joint（6-b）On offer the through hole connected with medium channel, bonnet（4）Away from valve body（1）One end on be connected with the second ball
Shape joint（6-a）, medium channel is away from valve body（1）One end in be machined with and the second globe joint（6-a）The cone of mutual cooperation
Face, the second globe joint（6-a）Pass through the second collar nut（5-a）It is fixed on bonnet（4）On, the second globe joint（6-a）On
Offer the through hole connected with medium channel.
A kind of 2. LNG high pressure low temperatures check valve peculiar to vessel according to claim 1, it is characterised in that：Described spring（3）'s
One end top is located at valve element（2）On, spring（3）Other end top be located at bonnet（4）On the step of interior bone.
A kind of 3. LNG high pressure low temperatures check valve peculiar to vessel according to claim 1, it is characterised in that：Described bonnet（4）'s
One end is threaded into valve body（1）It is interior, bonnet（4）With valve body（1）Binding face weld together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720502618.7U CN206708469U (en) | 2017-05-08 | 2017-05-08 | A kind of LNG high pressure low temperatures check valve peculiar to vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720502618.7U CN206708469U (en) | 2017-05-08 | 2017-05-08 | A kind of LNG high pressure low temperatures check valve peculiar to vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206708469U true CN206708469U (en) | 2017-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720502618.7U Active CN206708469U (en) | 2017-05-08 | 2017-05-08 | A kind of LNG high pressure low temperatures check valve peculiar to vessel |
Country Status (1)
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|---|---|
| CN (1) | CN206708469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468606A (en) * | 2018-05-03 | 2018-08-31 | 沈东岳 | A kind of automobile constant temperature check valve integrated device |
| CN108612878A (en) * | 2018-05-28 | 2018-10-02 | 江苏安普阀门机械有限公司 | A kind of check valve seal assembly peculiar to vessel |
-
2017
- 2017-05-08 CN CN201720502618.7U patent/CN206708469U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468606A (en) * | 2018-05-03 | 2018-08-31 | 沈东岳 | A kind of automobile constant temperature check valve integrated device |
| CN108612878A (en) * | 2018-05-28 | 2018-10-02 | 江苏安普阀门机械有限公司 | A kind of check valve seal assembly peculiar to vessel |
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