CN106286907A - A kind of check-valves - Google Patents
A kind of check-valves Download PDFInfo
- Publication number
- CN106286907A CN106286907A CN201610727086.7A CN201610727086A CN106286907A CN 106286907 A CN106286907 A CN 106286907A CN 201610727086 A CN201610727086 A CN 201610727086A CN 106286907 A CN106286907 A CN 106286907A
- Authority
- CN
- China
- Prior art keywords
- spool
- joint
- valve body
- check
- valves
- 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.)
- Pending
Links
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of check-valves, it includes valve body, core assembly, spring, sealing gasket and joint, valve body and joints are all in class tubulose, the two ends of valve body and joint are respectively provided with opening, it is provided with screw thread at one opening inwall of valve body, connect and at the outer wall of first opening, be also equipped with screw thread, valve body and joint are attached by the screw thread of respective opening part, core assembly includes spool and seal spool ring, spool includes head and the body being fixed as one with head, body is tubular and inside has cavity, seal spool ring is arranged at the head of spool, core assembly is integrally placed in the internal cavities of joint, spring is arranged in the cavity of spool body, one end of spring is connected on the step surface of spool body and head junction, the other end of spring is connected to the step surface at inner nosepiece wall.Apparatus of the present invention can achieve the anti-return of big flow ultralow temperature pipe-line system, and then ensures that ultra-low temperature systems is properly functioning.
Description
Technical field
The invention belongs to valve technology field, more particularly, to a kind of stream being applicable under big flow ultralow-temperature operation conditions
Body check-valves.
Background technology
Industrialized developing rapidly brings serious environmental problem, and wherein the destruction to environment of traditional energy is the most aobvious
Writing, the proportion of utilization improving clean energy resource (such as natural gas) has become extensively common recognition.
In order to improve the storage rate of natural gas, generally natural gas (temperature is-162 DEG C) at low temperatures is liquefied, make
Used time regasifies, and therefore, liquefied natural gas valve is with regard to the necessary focus of attention of Cheng Liaoguo inner valve enterprise.
The problem that traditional ultralow temperature check-valves generally exists leakage, flow is little, causes system to go out under low temperature dress state
Existing medium back flow phenomenon, it is impossible to effectively realize the reverse cutoff function of medium, bring hidden danger to security of system.
In order to solve this problem, need to develop a kind of novel big flow ultralow temperature check-valves, it is desirable to it can be the most anti-
Only medium back flow, can realize the big flow transport of cryogenic media.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides a kind of check-valves, it is intended that ingeniously
Wonderful core assembly is set and spring is placed in joint and valve body, can guarantee that the normal circulation of fluid and fluid reflux can be prevented, tool
There is preferable non-return effect.
For achieving the above object, according to one aspect of the present invention, it is provided that a kind of check-valves, it includes valve body, spool
Assembly, spring, sealing gasket and joint,
Described valve body and joints all two ends in class tubulose, valve body and joint are respectively provided with opening, set at valve interior wall
It is equipped with step surface, is also equipped with step surface at inner nosepiece wall, at joint outer wall, is additionally provided with flange face,
Being provided with screw thread at one opening inwall of valve body, another opening of valve body is groove shape, connects outside first opening
Being also equipped with screw thread at wall, another opening of joint also fills for groove, and valve body and joint are carried out by the screw thread of respective opening part
Connecting, and valve body port is connected at the flange face of joint, sealing gasket is placed between the flange face of valve body port and joint outer wall,
Described core assembly includes spool and seal spool ring, and described spool includes head and is fixed as one with head
Body, described body is tubular, has cavity inside this body, and seal spool ring is arranged at the head of spool, core assembly
Being integrally placed in the internal cavities of joint, spring is arranged in the cavity of spool body, and one end of spring is connected to spool body
With on the step surface of head junction, the other end of spring is connected to the step surface at inner nosepiece wall,
Spring pushes core assembly to valve body on the step surface by spool body and head junction so that seal spool
Ring apical grafting is at the step surface of valve interior wall, and when spring is by counteracting force, drives seal spool ring to depart from valve interior wall
Step surface.
Further, described spool body wall is symmetrically distributed with multiple square aperture, to guarantee that check-valves is situated between after opening
The circulation of matter.
Further, described poppet head having annular groove, seal spool ring is pressed into valve core head by spinning process
In the annular groove in portion,
The boss of circle it is provided with, in seal spool ring spinning to spool annular on the bottom surface of the annular groove of poppet head
During bottom portion of groove, circular boss embeds in polytrifluorochloroethylene under the effect of extruding, and can further guarantee to seal can
By property.
Further, having multiple steam vent bottom poppet head annular groove, multiple steam vents are uniformly distributed, it is simple to
Seal spool ring spinning puts in place, it is ensured that seal spool ring does not stay pneumatosis bottom spinning process intermediate annular groove, to ensure spool group
The reliability that part seals during check-valves uses.
Further, the import of all opening respectively check-valves in groove shape of described valve body and described joint and going out
Mouthful, the opening tapering of the import of described check-valves and the outlet of check-valves is 50 °～70 °, is preferably 60 °.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is possible to show under acquirement
Benefit effect:
When ultralow temperature medium flows into check-valves of the present invention by import, overcome the spring of spring by seal spool ring
Power, backs down core assembly so that seal spool ring departs from the step surface at valve interior wall, and check-valves is opened.In pipeline medium
When having reverse flow trend, the core assembly of check-valves is under the effect of spring force and medium buffer brake, and core assembly is whole
Body moves to check valve inlet direction, and seal spool ring is connected to the sealing of valve interior wall step surface, seal spool ring and valve body
Face fits tightly, and check-valves is in reverse blocking state, plays the effect preventing ultralow temperature medium back flow.Apparatus of the present invention can be real
Show the anti-return of big flow ultralow temperature pipe-line system, and then ensured that ultra-low temperature systems is properly functioning.
Accompanying drawing explanation
Fig. 1 is the structural representation of check-valves in the embodiment of the present invention；
Fig. 2 is the core assembly profile in the embodiment of the present invention；
Fig. 3 is spool parts structural representation during the present invention implements.
In all of the figs, identical reference is used for representing identical element or structure, wherein:
1-valve body 2-core assembly 3-spring
4-sealing gasket 5-joint
101-spool 102-seal spool ring
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.If additionally, technical characteristic involved in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
Ultralow temperature check-valves is the important component part of low-temperature control system, by effectively preventing ultralow temperature medium from returning
Stream, it is ensured that system is properly functioning
Fig. 1 is the structural representation of check-valves in the embodiment of the present invention；Fig. 2 is that the core assembly in the embodiment of the present invention cuts open
Face figure；Fig. 3 is spool parts structural representation during the present invention implements, as it can be seen, a kind of big flow ultralow temperature of the present invention is only
Returning valve and include valve body 1, core assembly 2, spring 3, sealing gasket 4 and joint 5, wherein, core assembly 2 includes spool 101 and spool
Sealing ring 102.
Wherein, valve body 1 and joint 5 profile are all in class tubular, and the two ends of valve body 1 and joint 5 are respectively provided with opening, in valve body 1
It is provided with step surface at wall, is also equipped with step surface at joint 5 inwall, at joint 5 outer wall, is additionally provided with flange face.Valve body 1 one
It is provided with screw thread at individual port inner wall, is also equipped with screw thread, valve body 1 and joint 5 at the outer wall of 5 one ports of joint and passes through screw thread
Being attached, and valve body 1 port is connected at the flange face of joint 5, sealing gasket 4 is placed in the method for valve body 1 end and joint 5 outer wall
Between blue face, to play sealing function.
Core assembly 2 is placed in the gathering sill (gathering sill is joint 5 internal cavities) of joint 5, and spring 3 is arranged on spool
In the internal cavities of assembly 2, one end of spring 3 is connected at the step surface of core assembly 2 outer wall, and the other end of spring 3 abuts
Step surface at joint 5 inwall, under the elastic force effect of spring 3, can utilize spring by the step surface of core assembly 2 outer wall
Elastic force push core assembly 2 to valve body 1 so that seal spool ring 102 apical grafting is at the step surface of valve body 1 inwall, concrete, valve
Core sealing ring 102 has chamfering, abuts the corner portion of the step surface of valve body 1 inwall with this fillet surface.Step at joint 5 inwall
Face is mainly to spring 3 and 2 position-limiting actions of core assembly.
The work process of check-valves of the present invention is as follows:
1 one openings of valve body are connected with joint 5, the import that another opening is check-valves of valve body 1, of joint 5
Opening is connected with valve body 1, the outlet that another opening is check-valves of joint 5.
Ultralow temperature medium is flowed into by import, is overcome the spring force of spring 3 by seal spool ring 102, backs down spool group
Part 2 so that seal spool ring 102 departs from the step surface at valve body 1 inwall, check-valves is opened, and ultralow temperature medium can be from check-valves
Import flows through core assembly and flows out from check-valves outlet.Ultralow temperature medium normally circulates in pipe-line system.
When pipeline medium has reverse flow trend, the core assembly 2 of check-valves is reversely pressed at spring force and medium
Under the effect of power, core assembly entirety moves to check valve inlet direction, and seal spool ring 102 is connected to valve body 1 inwall step
Face, seal spool ring 102 fits tightly with the sealing surface of valve body 1, and check-valves is in reverse blocking state, prevents ultralow temperature medium
Backflow.
Wherein, seal spool ring 102 material is such as polytrifluorochloroethylene material, it is ensured that check-valves is at ultralow-temperature operation conditions
The reliability of lower seal.Having annular groove on spool 101, seal spool ring 102 is by the ring of spinning process press-in spool 101
In connected in star.The bottom surface of the annular groove of spool 101 is designed with the boss of circle, at seal spool ring 102 spinning to valve
Time bottom core 101 annular groove, circular boss embeds in polytrifluorochloroethylene under the effect of extruding, can further guarantee
Sealing reliability.
Having three steam vents at spool 101 annular groove bottom, three steam vents are uniformly distributed, it is simple to seal spool ring
102 spinning put in place, it is ensured that seal spool ring 102 does not stay pneumatosis bottom spinning process intermediate annular groove, it is ensured that core assembly 2 is only
Return the reliability sealed during valve uses.
Check-valves latus rectum is such as φ 21, can meet the ultralow temperature medium negotiability under big flow status.For only ensureing
Returning valve inlet and outlet connectors and seal reliable, sealing means uses the ball metal to metal seal mode to cone, and check-valves is imported and exported and opens
Prostomum degree is 50 °～70 °, is the most such as 60 °.
Symmetrical four square aperture is had, it is ensured that after check-valves is opened on the outer wall of the spool 101 of core assembly 2
The negotiability of medium.Sealing gasket 4 uses politef material, coordinates the such as triangle arranged on valve body 1 and joint 5 recessed
Groove, under the extruding of valve body 1 and joint 5, it is ensured that the reliability that check-valves seals herein.Valve body 1, spool 101, joint 5 and bullet
The material of spring 3 is 304 rustless steels, can meet the job stability under ultra low temperature state.
Apparatus of the present invention can achieve the anti-return of big flow ultralow temperature pipe-line system, and then ensures that ultra-low temperature systems is normal
Run.
The big flow ultralow temperature check-valves of the present invention can be used under the operating mode that minimum temperature reaches-196 DEG C, this novel mass flow
Ultralow temperature check-valves can be applied to ultralow-temperature operation conditions, it is adaptable to the very low temperature flow control systems such as liquefied natural gas (LNG).
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (5)
1. a check-valves, it is characterised in that it includes valve body (1), core assembly (2), spring (3), sealing gasket (4) and joint
(5),
Described valve body (1) and joint (5) profile are all in class tubulose, and the two ends of valve body (1) and joint (5) are respectively provided with opening, valve body
(1) it is provided with step surface at inwall, is also equipped with step surface at joint (5) inwall, at joint (5) outer wall, is additionally provided with flange
Face,
Being provided with screw thread at (1) opening inwall of valve body, valve body (1) another opening is groove shape, (5) openings of joint
Outer wall at be also equipped with screw thread, joint (5) another opening also fills for groove, and valve body (1) and joint (5) pass through respective opening
The screw thread at place is attached, and valve body (1) port is connected at the flange face of joint (5), and sealing gasket (4) is placed in valve body (1) end
Between mouth and the flange face of joint (5) outer wall,
Described core assembly (2) includes spool (101) and seal spool ring (102), described spool (101) include head and with head
The body that portion is fixed as one, described body is tubular, has cavity inside this body, and seal spool ring (102) is arranged on valve
At the head of core (101), core assembly (2) is integrally placed in the internal cavities of joint (5), and spring (3) is arranged on spool (101)
In the cavity of body, one end of spring (3) is connected on the step surface of spool (101) body and head junction, spring (3)
The other end is connected to the step surface at joint (5) inwall,
Spring (3) pushes core assembly (2) to valve body (1) on the step surface by spool (101) body and head junction, makes
Obtain seal spool ring (102) apical grafting step surface at valve body (1) inwall, and when spring (3) is by counteracting force, band movable valve plug
Sealing ring (102) departs from the step surface of valve body (1) inwall.
2. a kind of check-valves as claimed in claim 1, it is characterised in that described spool (101) body wall is symmetrically distributed with
Multiple square aperture, with guarantee check-valves open after the circulation of medium.
3. a kind of check-valves as claimed in claim 1 or 2, it is characterised in that have annular on described spool (101) head recessed
Groove, in the seal spool ring (102) annular groove by spinning process press-in spool (101) head,
The boss of circle it is provided with, at seal spool ring (102) spinning to valve on the bottom surface of the annular groove of spool (101) head
Time bottom core (101) annular groove, circular boss embeds in polytrifluorochloroethylene under the effect of extruding, can the most really
The reliability of confidential letter.
4. a kind of check-valves as claimed in claim 3, it is characterised in that have bottom spool (101) head annular groove
Multiple steam vents, multiple steam vents are uniformly distributed, it is simple to seal spool ring (102) spinning puts in place, it is ensured that seal spool ring (102)
Bottom spinning process intermediate annular groove, do not remain pneumatosis, with ensure core assembly (2) check-valves use during seal can
By property.
5. check-valves as claimed in claim 4 a kind of, it is characterised in that described valve body (1) and described joint (5) all in slope
The opening of mouth shape is respectively the inlet and outlet of check-valves, and the opening tapering of the import of described check-valves and the outlet of check-valves is equal
It it is 50 °～70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610727086.7A CN106286907A (en) | 2016-08-25 | 2016-08-25 | A kind of check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610727086.7A CN106286907A (en) | 2016-08-25 | 2016-08-25 | A kind of check-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106286907A true CN106286907A (en) | 2017-01-04 |
Family
ID=57676875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610727086.7A Pending CN106286907A (en) | 2016-08-25 | 2016-08-25 | A kind of check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106286907A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883024A (en) * | 2017-11-15 | 2018-04-06 | 湖北三江航天红峰控制有限公司 | A kind of low temperature topping up check-valves |
| CN108223858A (en) * | 2017-08-08 | 2018-06-29 | 河南航天液压气动技术有限公司 | Valve sealing structure, valve and the low pressure valve using the sealing structure |
| CN109210245A (en) * | 2017-07-01 | 2019-01-15 | 乔森 | A kind of unidirectional stop valve |
| CN109707995A (en) * | 2019-01-09 | 2019-05-03 | 中国原子能科学研究院 | A kind of note hydrogen note argon skid-mounted system for sodium-cooled fast reactor |
| CN111730366A (en) * | 2020-07-10 | 2020-10-02 | 深圳市爱贝科精密机械有限公司 | Water outlet and air outlet switching mechanism of main shaft |
| CN113187968A (en) * | 2021-06-15 | 2021-07-30 | 开能康德威健康科技(北京)有限责任公司 | Pipeline assembly and water treatment equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4637430A (en) * | 1985-12-31 | 1987-01-20 | Nupro Company | Check valve |
| CN202082438U (en) * | 2011-04-12 | 2011-12-21 | 重庆缔欧机械制造有限公司 | Novel unidirectional valve |
| CN202366362U (en) * | 2011-12-09 | 2012-08-08 | 四川迪威消防设备制造有限公司 | One-way valve for fire extinguishing agent storage container |
| CN203614822U (en) * | 2013-10-31 | 2014-05-28 | 北京宇航系统工程研究所 | Anti-blocking pressure increasing one-way valve |
| CN204042084U (en) * | 2014-07-18 | 2014-12-24 | 天津华迈燃气装备股份有限公司 | The hard leakproof one-way valve of a kind of high pressure for natural gas compressor |
-
2016
- 2016-08-25 CN CN201610727086.7A patent/CN106286907A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4637430A (en) * | 1985-12-31 | 1987-01-20 | Nupro Company | Check valve |
| CN202082438U (en) * | 2011-04-12 | 2011-12-21 | 重庆缔欧机械制造有限公司 | Novel unidirectional valve |
| CN202366362U (en) * | 2011-12-09 | 2012-08-08 | 四川迪威消防设备制造有限公司 | One-way valve for fire extinguishing agent storage container |
| CN203614822U (en) * | 2013-10-31 | 2014-05-28 | 北京宇航系统工程研究所 | Anti-blocking pressure increasing one-way valve |
| CN204042084U (en) * | 2014-07-18 | 2014-12-24 | 天津华迈燃气装备股份有限公司 | The hard leakproof one-way valve of a kind of high pressure for natural gas compressor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210245A (en) * | 2017-07-01 | 2019-01-15 | 乔森 | A kind of unidirectional stop valve |
| CN109210245B (en) * | 2017-07-01 | 2024-04-05 | 乔森 | One-way stop valve |
| CN108223858A (en) * | 2017-08-08 | 2018-06-29 | 河南航天液压气动技术有限公司 | Valve sealing structure, valve and the low pressure valve using the sealing structure |
| CN107883024A (en) * | 2017-11-15 | 2018-04-06 | 湖北三江航天红峰控制有限公司 | A kind of low temperature topping up check-valves |
| CN109707995A (en) * | 2019-01-09 | 2019-05-03 | 中国原子能科学研究院 | A kind of note hydrogen note argon skid-mounted system for sodium-cooled fast reactor |
| CN111730366A (en) * | 2020-07-10 | 2020-10-02 | 深圳市爱贝科精密机械有限公司 | Water outlet and air outlet switching mechanism of main shaft |
| CN113187968A (en) * | 2021-06-15 | 2021-07-30 | 开能康德威健康科技(北京)有限责任公司 | Pipeline assembly and water treatment equipment |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |