CN107883024A - A kind of low temperature topping up check-valves - Google Patents
A kind of low temperature topping up check-valves Download PDFInfo
- Publication number
- CN107883024A CN107883024A CN201711130306.9A CN201711130306A CN107883024A CN 107883024 A CN107883024 A CN 107883024A CN 201711130306 A CN201711130306 A CN 201711130306A CN 107883024 A CN107883024 A CN 107883024A
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- China
- Prior art keywords
- valve body
- check
- low temperature
- valve
- valves
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Classifications
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
- F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of low temperature topping up check-valves, including valve body (6), core assembly (5), the valve body (6) leads to structure in being, it is respectively inlet and outlet to lead to structure both ends in described, the exit is provided with interface (1), the core assembly (5) is among the valve body (6) close to the entrance, spring (4) is provided between the core assembly (5) and the interface (1), the core assembly (5) includes valve core (51) and seal spool block (5), valve core (51) lower end is provided with groove, the seal spool block (5) is in the groove, the valve body (6), the interface (1) and the spring (4) use to be made of the metal material Jing Guo subzero treatment, the valve core (51) is made of polytrifluorochloroethylene.Low temperature topping up check-valves of the present invention not only reverse non-return good sealing effect, and be adapted to work under low temperature environment.
Description
Technical field
The invention belongs to valve technology field, more particularly, to a kind of low temperature topping up check-valves.
Background technology
Natural gas is compressed into liquefied natural gas through being dehydrated, refining and cool down under -163 DEG C of cryogenic conditions, saves storage
And transport space, therefore liquefied natural gas industry quickly flourishes.Liquefied natural gas has inflammable and explosive property, liquefied natural gas
Dangerous high, valve is the important device in natural gas motorcar, therefore the security of valve is most important, in addition in the market pair
The valve demand that it matches is also increasing, and wherein low temperature topping up check-valves is as the important composition in liquefied natural gas plant
Part, its development receive the sizable concern of valve industry.
The normal working temperature of liquefied natural gas valve is -163 DEG C, and brittle fracture under low temperature phenomenon will occur for metal material, i.e., strong
Degree and hardness rise, plasticity and toughness decline to a great extent, and this can have a strong impact on the security of valve.Opened in addition in natural gas valve
Afterwards, natural gas adverse current is also to have a strong impact on the problem of liquefied natural gas is safe to use, and prior art is designed mainly also for solution
Certainly above-mentioned two problems, but the preferable valve of neither one can solve the problems, such as low-temperature working and fluid stopping well.
Patent CN103732962 discloses a kind of check-valves, is supported by making to be suppressed the key that part suppresses with containment member
Connect and the opening of fluid passage of the device on the first valve body is turned into closed mode.Seal is carried out post-cure complete
Fluorubber gasket.Sealing formed with the ring-type with containment member linear contact lay on key.The patent can be good at
Solve the problems, such as adverse current, but the low temperature of liquefied natural gas working environment can not be born, in addition, the fluid stopping effect of the check-valves and
Sealing effectiveness is also undesirable.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, a kind of low temperature topping up check-valves of offer of the invention, core assembly,
The collective effect of spring and interface can realize that cryogenic liquid enters the import of valve by filling apparatus, and pressure medium overcomes spring force
Valve element is opened with frictional force, valve opening；Cryogenic media enters system by valve, when filling apparatus stops liquid feeding, in bullet
In the presence of spring force and frictional force, valve element is closed, so as to prevent the backflow of liquid in systems, seal spool block,
Sealing gasket uses polytrifluorochloroethylene material, and interface, spring, valve body use metal material, and are carried out after roughing at deep cooling
Reason, meets the reliability that worst cold case uses, improves the security of valve.
To achieve these goals, the present invention provides a kind of low temperature topping up check-valves, including valve body and core assembly, and it is special
Sign is that the valve body leads to structure in being, it is respectively inlet and outlet to lead to structure both ends in described, and the exit is provided with and connect
Mouthful, the core assembly, close to the entrance, is provided among the valve body between the core assembly and the interface
Spring, for making the core assembly compress the sealing surface of valve body, to realize function that check-valves reversely seals；
The core assembly includes valve core and seal spool block, and the valve core lower end is provided with groove, and the valve element is close
Block is sealed in the groove, for ensureing the sealing of reverse non-return, the valve body, the interface and the spring are using warp
The metal material for crossing subzero treatment is made, and the valve core is made of polytrifluorochloroethylene, for ensureing under check-valves low temperature
Normal work.
Further, the valve core top is provided with the boss structure of two or more uniform intervals distribution, the boss knot
Small―gap suture is equipped between structure outer wall and the valve body, and the spring is in the opening that boss structure surrounds, the spring
Contacted with the boss structure inwall.
Further, the valve core bottom is along the circumferential direction respectively equipped with the equally distributed through hole of two or more, described
Two or more through hole is connected with the valve outlet.
Further, spring base is provided with the spring.
Further, position of the valve body between the spring base and interface is provided with step surface.
Further, the import of the valve body is set to cone mouth structure.
Further, the interface is set in the upper end of the valve body, and the valve body upper end is provided with cascaded surface, the interface
Projection is correspondingly provided with, the described raised and cascaded surface coordinates.
Further, the interface and the valve body junction are provided with sealing gasket.
Further, the sealing gasket is made of polytrifluorochloroethylene material.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) low temperature topping up check-valves of the present invention, the collective effect of core assembly, spring and interface can realize that cryogenic liquid leads to
The import that filling apparatus enters valve is crossed, pressure medium overcomes spring force and frictional force to open valve element, valve opening；Cryogenic media
System is entered by valve, when filling apparatus stops liquid feeding, in the presence of spring force and frictional force, valve element, which is in, closes shape
State, so as to prevent the backflow of liquid in systems, ensure the safe operation of system.
(2) low temperature topping up check-valves of the present invention, seal spool block, sealing gasket use polytrifluorochloroethylene material, interface, bullet
Spring, valve body use metal material, and subzero treatment are carried out after roughing, meet the reliability that worst cold case uses, and improve
The security of valve.
(3) low temperature topping up check-valves of the present invention, valve core lower half separate four equally distributed holes, and uniform bore causes together
Pressure fluid on one circumference everywhere circulates mutually, and core assembly is avoided because liquid is flowing through in valve body centralized positioning
, there is side clamping in caused side force between core assembly and valve body gap, error when causing the core assembly to move
Phenomenon.
(4) part of low temperature topping up check-valves of the present invention, valve core top half and valve body contact design four it is uniform
Boss structure, boss are coordinated with valve body using small―gap suture, can reduce the frictional force between valve core and valve body, and and can ensures valve
The good sliding of core assembly and sealing property.
Brief description of the drawings
Fig. 1 is a kind of structural representation of low temperature topping up check-valves of the embodiment of the present invention；
Fig. 2 is a kind of core assembly profile of low temperature topping up check-valves of the embodiment of the present invention；
Fig. 3 is a kind of valve core structural representation of low temperature topping up check-valves of the embodiment of the present invention.
In all accompanying drawings, same reference represents identical structure and part, wherein：1- interfaces, 2- sealing gaskets, 3-
Spring base, 4- springs, 5- core assemblies, 6- valve bodies；
51- valve cores, 52- seal spool blocks.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below that
Conflict can is not formed between this to be mutually combined.
Fig. 1 is a kind of structural representation of low temperature topping up check-valves of the embodiment of the present invention.Fig. 2 is that the embodiment of the present invention is a kind of
The core assembly profile of low temperature topping up check-valves.Fig. 3 is a kind of valve core knot of low temperature topping up check-valves of the embodiment of the present invention
Structure schematic diagram.As shown in Figure 1, Figure 2 and Figure 3, the low temperature topping up check-valves include interface 1, sealing gasket 2, spring base 3, spring 4,
Core assembly 5 and valve body 6, wherein core assembly 5 include valve core 51 and seal spool block 52, and valve body 6 leads to structure in being, in lead to
Structure both ends are respectively inlet and outlet, and the import of valve body 6 is cone mouth structure, and interface 1 is set in the exit of valve body 6, and passes through
Threaded connection, interface 1 lead to structure in being, for realizing the outflow of medium, the upper end of valve body 6 is provided with cascaded surface, and interface 1 is correspondingly provided with
Projection, the projection coordinate with cascaded surface, for placing the interface 1, and are provided with sealing gasket 2 between raised and step surface, coordinate
Valve body and the groove on joint, in assembling by valve body and the two-way extruding force of joint, play sealing function and ensure check-valves not
Leakage phenomenon occurs.Spring base 3, position of the valve body 6 between spring base 3 and interface 1 are provided with the lower section valve body 6 of interface 1
Provided with step surface, axial limiting is played a part of to spring base 3.
The one end of spring 4 is in spring base 3, and one end is provided with valve core 51, wherein the setting energy limited spring of spring base 3
4 radial-play, core assembly 5 is caused to keep good contact with the sealing surface of valve body 6 in the presence of the spring force of spring 4,
It is achieved thereby that the function that check-valves reversely seals.The upper end of valve core 51 is hatch frame, and the top of valve core 51 is divided into four
Individual equally distributed boss structure, and four spaced settings of boss structure, spring 4 are opened located at what four boss structures surrounded
Intraoral, small―gap suture coordinates between four equally distributed boss structure outer walls and valve body 6, can reduce between valve core and valve body
Frictional force, and can ensures the good slidingly and sealingly performance of valve element.Spring 4 connects in four boss structures with boss inwall
Touch.Circumference of the bottom of valve core 51 along valve core 51 is separately provided with four equally distributed through holes, four through holes and the upper end of valve body 6
Be open UNICOM, and uniform bore causes the equal liquid of pressure on same circumference everywhere to circulate mutually, and valve element is kept away in centralized positioning
Exempt from, because liquid is flowing through caused side force between valve element and hair empty gap, error when causing the valve element to move, occur one
The phenomenon of side clamping.
The lower end of valve core 51 opens up fluted, and valve core sealing block 52 is in the groove, valve core 51 and seal spool
Coordinate between block 52 for gap, be pressed into after one end gluing of seal spool block 52 in the groove of valve core 51, other end rolling is received
Mouthful, the end face of smart car sealing block, ensure that its roughness can reach seal request.In order to ensure that the sealing reliability of check-valves uses
Arc surface is to the metal of plane to nonmetallic seal form.
Import as preferred valve body 6 is 37 cone mouth structures.
Lead and yellow-collation copper product is used as preferred valve core 51.
Polytrifluorochloroethylene material is used as preferred sealing gasket 2.
Valve body 6, interface 1, spring 4 use metal material, and as preferred valve body 6, interface 1, spring 4 use 304 not
Rust steel material, and subzero treatment is carried out after roughing, meet the use condition of Cryogenic Filling device.
Pressure medium is in the state close to balance and mutual dragsaw before and after check-valves, and flap is often in unlatching, pass
The state closed, in order to ensure check-valves performance, valve core 51 preferably uses polytrifluorochloroethylene material, both can guarantee that flap
The toughness of material, and can meet the sealing property under worst cold case, are not in cold flow.
In use, cryogenic liquid enters valve body 6 by import, the spring force and core assembly 5 and valve body of spring 4 are overcome
6 frictional force causes core assembly 5 to depart from the sealing surface of valve body 6 and move up, and liquid passes through the gap between core assembly 5 and valve body 6
So as to realizing the purpose to system filling liquid in into the cavity of core assembly.During liquid reverse flow, in the spring force of spring 4
In the presence of pressure medium, core assembly 5 seals motionless, so as to ensure that the phenomenon for preventing medium counter flow, has reached non-return
The good sealing effectiveness of valve.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (9)
1. a kind of low temperature topping up check-valves, including valve body (6) and core assembly (5), it is characterised in that during the valve body (6) is
Logical structure, it is respectively inlet and outlet to lead to structure both ends in described, and the exit is provided with interface (1), the core assembly (5)
Close to the entrance among the valve body (6), spring is provided between the core assembly (5) and the interface (1)
(4), for making the core assembly (5) compress the sealing surface of valve body (6), to realize function that check-valves reversely seals；
The core assembly (5) includes valve core (51) and seal spool block (5), and valve core (51) lower end is provided with groove,
The seal spool block (5) is in the groove, for ensureing the sealing of reverse non-return, the valve body (6), the interface
(1) it is made with the spring (4) of the metal material Jing Guo subzero treatment, the valve core (51) uses polytrifluorochloroethylene
It is made, for ensureing normal work under check-valves low temperature.
2. a kind of low temperature topping up check-valves according to claim 1, it is characterised in that valve core (51) top is provided with
The boss structure of two or more uniform intervals distribution, small―gap suture coordinates and set between the boss structure outer wall and the valve body (6)
Put, in the opening that boss structure surrounds, the spring (4) contacts the spring (4) with the boss structure inwall.
A kind of 3. low temperature topping up check-valves according to claim 1 or 2, it is characterised in that valve core (51) bottom
The equally distributed through hole of two or more is along the circumferential direction respectively equipped with, described two above through holes export with the valve body (6)
It is connected.
4. a kind of low temperature topping up check-valves according to claim 1 or 2, it is characterised in that be provided with the spring (4)
Spring base (3).
5. a kind of low temperature topping up check-valves according to claim 1,2 or 4, it is characterised in that the valve body (6) is located at institute
The position stated between spring base (3) and interface (1) is provided with step surface.
6. a kind of low temperature topping up check-valves according to claim 5, it is characterised in that the import of the valve body (6) is set to
Cone mouth structure.
7. a kind of low temperature topping up check-valves according to claim 1, it is characterised in that the interface (1) is set in described
The upper end of valve body (6), valve body (6) upper end are provided with cascaded surface, and the interface (1) is correspondingly provided with projection, the raised and institute
State cascaded surface cooperation.
8. a kind of low temperature topping up check-valves according to claim 1 or 6, it is characterised in that the interface (1) and the valve
Body (6) junction is provided with sealing gasket (2).
9. a kind of low temperature topping up check-valves according to claim 8, it is characterised in that the sealing gasket (2) uses poly- three
Fluorine vinyl chloride material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711130306.9A CN107883024A (en) | 2017-11-15 | 2017-11-15 | A kind of low temperature topping up check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711130306.9A CN107883024A (en) | 2017-11-15 | 2017-11-15 | A kind of low temperature topping up check-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107883024A true CN107883024A (en) | 2018-04-06 |
Family
ID=61777303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711130306.9A Pending CN107883024A (en) | 2017-11-15 | 2017-11-15 | A kind of low temperature topping up check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107883024A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803503A (en) * | 2021-09-17 | 2021-12-17 | 沈阳工程学院 | Right-angle hydraulic control one-way valve for internet of things terminal information acquisition |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1604135A1 (en) * | 2003-03-20 | 2005-12-14 | Bosch Rexroth AG | Non-return valve |
| CN102588633A (en) * | 2012-03-12 | 2012-07-18 | 太仓市弧螺机电有限公司 | High-reliability one-way valve |
| CN103732962A (en) * | 2011-06-10 | 2014-04-16 | 株式会社富士金 | Check valve |
| CN205401838U (en) * | 2016-03-08 | 2016-07-27 | 任焕轩 | On -vehicle gas cylinder filling opening of LNG |
| CN106195355A (en) * | 2016-08-04 | 2016-12-07 | 成都国光电子仪表有限责任公司 | A kind of resistant to elevated temperatures gas pipeline one-way cock |
| CN106286907A (en) * | 2016-08-25 | 2017-01-04 | 湖北三江航天红峰控制有限公司 | A kind of check-valves |
-
2017
- 2017-11-15 CN CN201711130306.9A patent/CN107883024A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1604135A1 (en) * | 2003-03-20 | 2005-12-14 | Bosch Rexroth AG | Non-return valve |
| CN103732962A (en) * | 2011-06-10 | 2014-04-16 | 株式会社富士金 | Check valve |
| CN102588633A (en) * | 2012-03-12 | 2012-07-18 | 太仓市弧螺机电有限公司 | High-reliability one-way valve |
| CN205401838U (en) * | 2016-03-08 | 2016-07-27 | 任焕轩 | On -vehicle gas cylinder filling opening of LNG |
| CN106195355A (en) * | 2016-08-04 | 2016-12-07 | 成都国光电子仪表有限责任公司 | A kind of resistant to elevated temperatures gas pipeline one-way cock |
| CN106286907A (en) * | 2016-08-25 | 2017-01-04 | 湖北三江航天红峰控制有限公司 | A kind of check-valves |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803503A (en) * | 2021-09-17 | 2021-12-17 | 沈阳工程学院 | Right-angle hydraulic control one-way valve for internet of things terminal information acquisition |
| CN113803503B (en) * | 2021-09-17 | 2023-04-18 | 沈阳工程学院 | Right-angle hydraulic control one-way valve for internet of things terminal information acquisition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180406 |
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| RJ01 | Rejection of invention patent application after publication |