CN106870778A - A kind of ultralow temperature filling valve - Google Patents
A kind of ultralow temperature filling valve Download PDFInfo
- Publication number
- CN106870778A CN106870778A CN201710179560.1A CN201710179560A CN106870778A CN 106870778 A CN106870778 A CN 106870778A CN 201710179560 A CN201710179560 A CN 201710179560A CN 106870778 A CN106870778 A CN 106870778A
- Authority
- CN
- China
- Prior art keywords
- valve
- gland
- valve element
- spring
- ultralow temperature
- 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.)
- Granted
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
- F16K15/06—Check valves with guided rigid valve members with guided stems
Abstract
The invention discloses a kind of ultralow temperature filling valve, including valve body and the valve element for being slideably positioned therein portion, gland is connected with the valve body lower end, spring is additionally provided with the valve inner, the upper end of the spring is arranged on valve element, the lower end of the spring is arranged on gland, and being inlaid with the valve body prevents the primary seal pad of low temperature leak, and the outer cone surface seal structure being engaged with primary seal pad is provided with the middle part of the outer peripheral face of the valve element.Good sealing effect of the present invention, not only avoids waste of resource, and also effectively raises the security performance of operating personnel, while also can ensure that valve element uniform force, is not susceptible to leakage.
Description
Technical field
The present invention relates to valve technology field, a kind of ultralow temperature filling valve is related specifically to.
Background technology
The main component of liquified natural gas is methane, a small amount of ethane, propane and other compositions, and its boiling point is -162 DEG C,
Fusing point is -182 DEG C, and burning-point is 650 DEG C.The molecular weight of liquified natural gas is small, and viscosity is low, and permeability is strong, it is easy to leakage and diffusion,
In the devices such as production, reception, transport and gasification, Subzero valve has extremely important work to its system safe and reliable operation
With wherein filling opening is the filling apparatus in reception system.
And prior art is poor for the sealing effectiveness of the valve of low temperature filling opening, cannot effectively be sealed after liquid feeding, not only
Cause resource loss, and also seriously threaten the personal safety of operating personnel；Another, prior art is used for low temperature filling opening
Valve damaged or valve element is subject to out-of-balance force or valve element to be subject to many reasons such as resistance when moving due to general plug envelope, easily make valve
The phenomenon that door is leaked, larger inconvenience is brought to user.
But in view of the shortcomings of the prior art, developer is necessary to develop a kind of reasonable in design, simple structure, sealing effectiveness
It is good, waste of resource is not only avoided, and also the security performance of operating personnel is effectively raised, while also can ensure that valve element is received
Power is uniform, is not susceptible to the ultralow temperature filling valve of leakage.
The content of the invention
To solve the problems, such as prior art, the object of the invention provides a kind of reasonable in design, simple structure, sealing effect
It is really good, waste of resource is not only avoided, and also the security performance of operating personnel is effectively raised, while also can ensure that valve element
Uniform force, is not susceptible to the ultralow temperature filling valve of leakage.
To solve above technical problem, what the present invention was realized using following technical scheme：
A kind of ultralow temperature filling valve, including valve body and the valve element in portion is slideably positioned therein, in the valve body lower end
Gland is connected with, spring is additionally provided with the valve inner, the upper end of the spring is arranged on valve element, the lower end of the spring
It is arranged on gland, it is characterised in that being inlaid with the valve body prevents the primary seal pad of low temperature leak, in the valve element
The outer cone surface seal structure being engaged with primary seal pad is provided with the middle part of outer peripheral face.
In a preferred embodiment of the invention, side sealing is provided between the outer peripheral face and valve body of the valve element
Ring, the side sealing ring is coated on the top of the outer peripheral face of valve element.
In a preferred embodiment of the invention, Upper gasket is provided between the upper end of the spring and valve element, in institute
State and lower gasket is provided between the lower end of spring and gland.
In a preferred embodiment of the invention, circumferentially distributed there are at least one and gland in the bottom of the valve element
Inner peripheral surface carry out the arc surface structure of arc surface contact.
In a preferred embodiment of the invention, internal thread is provided with the inner peripheral surface of the bottom of the valve body, in institute
The outer peripheral face for stating the top of gland is provided with the external screw thread being engaged with internal thread.
In a preferred embodiment of the invention, the primary seal pad is formed using polytrifluorochloroethylene material manufacture.
In a preferred embodiment of the invention, it is provided with the end face that the valve body is engaged with the upper surface of gland
Interior reentrant features, the interior reentrant features are 0.2-0.6mm, the interior re-entrant angle knot with the width of the contact surface of the upper surface of gland
A diameter of 55-65mm of the contact surface of the upper surface of structure and gland, the angle of the interior reentrant features is 45 ° -75 °.
In a preferred embodiment of the invention, the interior reentrant features are with the contact width of the upper surface of gland
0.4mm, a diameter of 60mm of the contact surface of the upper surface of the interior reentrant features and gland, the angle of the interior reentrant features is
60°。
Compared with prior art, the present invention is inlaid with valve body and prevents the primary seal pad of low temperature leak, in the outer of valve element
The outer cone surface seal structure being engaged with primary seal pad is provided with the middle part of side face, is adopted the structure and is effectively raised the valve
Sealing property, not only avoid waste of resource, and also effectively raise the security performance of operating personnel；Another, in bullet
Upper gasket is provided between the upper end of spring and valve element, lower gasket is provided between the lower end of spring and gland, using Upper gasket with
Pad is effectively combined, and effectively reduces the torsional deformation of spring, coordinates circumferentially distributed circular arc to be oriented to and is able to ensure that valve
Core uniform force, is difficult to leak the valve；Another, valve body is connected through a screw thread with bonnet, and in valve body and pressure
The end face that the upper surface of lid is engaged is provided with interior reentrant features, adopts the structure the sealing that improve in high and low temperature alternative
Performance.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is structural representation of the invention.
Fig. 2 is exploded perspective view of the invention.
Fig. 3 is enlarged drawing at the A of Fig. 1.
Fig. 4 is enlarged drawing at the B of Fig. 1.
Fig. 5 is enlarged drawing at the C of Fig. 1.
Fig. 6 is enlarged drawing at the D of Fig. 1.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Shown in reference picture 1- Fig. 6, a kind of ultralow temperature filling valve be given in figure, including valve body 100 and slip are set
In its internal valve element 200.
The filling import 110 being connected with filling gun is offered in the upper end of valve body 100, pressure is connected with the lower end of valve body 100
Lid 300, filling outlet 310 is offered in the lower end of gland 300, is additionally provided with spring 400 inside valve body 100, spring 400 it is upper
End is arranged on valve element 200, and the lower end of spring 400 is arranged on gland 300.
Valve element 200 includes upper valve core 210 and the bottom spool 220 being therewith molded, and the external diameter of upper valve core 210 is less than lower valve
The external diameter of core 220, being inlaid with valve body 100 prevents the primary seal pad 500 of low temperature leak, in the periphery of the upper end of bottom spool 220
Face is provided with the outer cone surface seal structure 221 being engaged with primary seal pad 500, outer cone surface seal structure 221 and primary seal pad 500
It is effective to coordinate, while not influenceing to open effect and do not increase total leakage point, can preferably prevent low temperature leak.
Primary seal pad 500 is formed using polytrifluorochloroethylene material manufacture, due to using polytrifluorochloroethylene material manufacture
Primary seal 500 low-temperature shrink of pad the reason for, coordinate with outer cone surface seal structure 221, can preferably certainly solution filling opening it is low
The problem of temperature sealing.
Side sealing ring 600 is provided between the filling import 110 of the outer peripheral face and valve body 100 of upper valve core 210, side is close
Seal ring 600 is coated on the outer peripheral face of the bottom of upper valve core 210, is provided with upper valve core 210 and is crimped on side sealing ring 600
Pad pressure ring 900, and pad card 800 of the pressure ring 900 by being connected on upper valve core 210 and be arranged on upper valve core 210, side sealing
Ring 600 uses general plug sealing ring, can effectively increase the service life of the valve, and side sealing ring 900 is effective with valve body 100
Cooperation, can to valve element 200 play be oriented to correct effect.
The gap that there is 0.5-1mm the upper surface 223 of bottom spool 220 with the metal step of valve body 100 coordinates, and works as valve seal
When catastrophe failure occurs in position, two plane contacts simultaneously have certain leakage-proof effect, prevent from filling rear liquid splash out hurting
Operating personnel.
Upper gasket 710 is provided between the upper end of spring 400 and valve element 200, is set between the lower end of spring 400 and gland
There is lower gasket 720, prevented the friction between spring 400 and valve element 200 and spring 400 and gland 300, it is to avoid metal and gold
Iron filings produced by category friction, the problem revealed caused by effectively reduces the abrasion of spring 400, it can be ensured that valve element
Uniform force, is difficult to leak the valve.
There is at least one circle that arc surface contact is carried out with the inner peripheral surface of gland 300 the bottom of valve element 200 is circumferentially distributed
Globoidal structure 222, the contact surface with gland 300 can be reduced using arc surface structure 222 while ensureing and having and be oriented to enough
Product, can effectively prevent because a small amount of moisture freeze caused by inwall valve element cannot normal start phenomenon generation.
Internal thread 120 is provided with the inner peripheral surface of the bottom of valve body 100, is provided with the outer peripheral face on the top of gland 300
The external screw thread 320 being engaged with internal thread 120, indent is provided with the end face that valve body 100 is engaged with the upper surface of gland 300
Corner structure 130, interior reentrant features 130 are 0.2-0.6mm, interior reentrant features with the width of the contact surface of the upper surface of gland 300
130 with a diameter of 55-65mm of the contact surface of the upper surface of gland 300, the angle of interior reentrant features 130 is 45 ° -75 °, at this
Interior reentrant features 130 and the width of the contact surface of the upper surface of gland 300 are 0.4mm, interior reentrant features 130 and pressure in embodiment
A diameter of 60mm of the contact surface of the upper surface of lid 300, the angle of interior reentrant features 130 is 60 °, and adopting the structure can be
(150Nm) realizes metal sealing effect under low locking torsion, so as to ensure under the larger temperature difference without leakage phenomenon.
The present invention is inlaid with valve body and prevents the primary seal pad of low temperature leak in sum, in the outer peripheral face of valve element
Portion is provided with the outer cone surface seal structure being engaged with primary seal pad, adopts the structure the sealing for effectively raising the valve
Can, waste of resource is not only avoided, and also effectively raise the security performance of operating personnel；Another, in the upper end of spring
Upper gasket is provided between valve element, lower gasket is provided between the lower end of spring and gland, it is effective with lower gasket using Upper gasket
Combination, effectively reduce the torsional deformation of spring, coordinate circumferentially distributed circular arc to be oriented to and be able to ensure that valve element stress is equal
It is even, it is difficult to leak the valve；Another, valve body is connected through a screw thread with bonnet, and in valve body and the upper end of gland
The end face that face is engaged is provided with interior reentrant features, adopts the structure the sealing property that improve in high and low temperature alternative.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent is defined.
Claims (8)
1. a kind of ultralow temperature filling valve, including valve body and the valve element for being slideably positioned therein portion, connect in the valve body lower end
Gland is connected to, spring is additionally provided with the valve inner, the upper end of the spring is arranged on valve element, and the lower end of the spring sets
Put on gland, it is characterised in that being inlaid with the valve body prevents the primary seal pad of low temperature leak, in the outer of the valve element
The outer cone surface seal structure being engaged with primary seal pad is provided with the middle part of side face.
2. a kind of ultralow temperature filling valve as claimed in claim 1, it is characterised in that：In the outer peripheral face and valve of the valve element
Side sealing ring is provided between body, the side sealing ring is coated on the top of the outer peripheral face of valve element.
3. a kind of ultralow temperature filling valve as claimed in claim 1, it is characterised in that：In the upper end of the spring and valve element
Between be provided with Upper gasket, be provided with lower gasket between the lower end of the spring and gland.
4. a kind of ultralow temperature filling valve as claimed in claim 1, it is characterised in that：In the bottom of the valve element circumferentially
Being distributed with least one carries out the arc surface structure of arc surface contact with the inner peripheral surface of gland.
5. a kind of ultralow temperature filling valve as claimed in claim 1, it is characterised in that：In the inner circumferential of the bottom of the valve body
Face is provided with internal thread, and the external screw thread being engaged with internal thread is provided with the outer peripheral face on the top of the gland.
6. a kind of ultralow temperature filling valve as claimed in claim 1, it is characterised in that：The primary seal pad uses poly- trifluoro
Vinyl chloride material manufacture is formed.
7. a kind of ultralow temperature filling valve as claimed in claim 1, it is characterised in that：In the valve body and the upper end of gland
The end face that face is engaged is provided with interior reentrant features, and the interior reentrant features are with the width of the contact surface of the upper surface of gland
A diameter of 55-65mm of the contact surface of the upper surface of 0.2-0.6mm, the interior reentrant features and gland, the interior reentrant features
Angle be 45 ° -75 °.
8. a kind of ultralow temperature filling valve as claimed in claim 7, it is characterised in that：The interior reentrant features and gland
The contact width of upper surface is 0.4mm, a diameter of 60mm of the contact surface of the upper surface of the interior reentrant features and gland, described
The angle of interior reentrant features is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179560.1A CN106870778B (en) | 2017-03-23 | 2017-03-23 | valve for ultralow temperature filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179560.1A CN106870778B (en) | 2017-03-23 | 2017-03-23 | valve for ultralow temperature filling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106870778A true CN106870778A (en) | 2017-06-20 |
| CN106870778B CN106870778B (en) | 2019-12-10 |
Family
ID=59172735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710179560.1A Active CN106870778B (en) | 2017-03-23 | 2017-03-23 | valve for ultralow temperature filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870778B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178210A (en) * | 2020-09-03 | 2021-01-05 | 湖北三江航天红峰控制有限公司 | Ultralow-temperature pneumatic stop valve |
| CN113757075A (en) * | 2021-09-23 | 2021-12-07 | 珠海格力电器股份有限公司 | Compressor muffler air inlet structure and reciprocating compressor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100696209B1 (en) * | 2006-03-23 | 2007-03-20 | 김청균 | Device for charging liquefied petroleum gas |
| CN202140576U (en) * | 2011-07-01 | 2012-02-08 | 宁波三安制阀有限公司 | Low-temperature stop valve |
| CN203549385U (en) * | 2013-10-30 | 2014-04-16 | 成都安迪生测量有限公司 | Integrated liquid adding gun seat |
| CN104847928A (en) * | 2015-05-18 | 2015-08-19 | 苏州赛智达智能科技有限公司 | Low-temperature filling valve on LNG storage tank |
| CN205401838U (en) * | 2016-03-08 | 2016-07-27 | 任焕轩 | On -vehicle gas cylinder filling opening of LNG |
| CN105864436A (en) * | 2016-06-13 | 2016-08-17 | 苏州先创流体控制技术有限公司 | End face sealed LNG (liquefied natural gas) filling port with positioning structure |
| CN206637064U (en) * | 2017-03-23 | 2017-11-14 | 罗达莱克斯阀门(上海)有限公司 | A kind of ultralow temperature filling valve |
-
2017
- 2017-03-23 CN CN201710179560.1A patent/CN106870778B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100696209B1 (en) * | 2006-03-23 | 2007-03-20 | 김청균 | Device for charging liquefied petroleum gas |
| CN202140576U (en) * | 2011-07-01 | 2012-02-08 | 宁波三安制阀有限公司 | Low-temperature stop valve |
| CN203549385U (en) * | 2013-10-30 | 2014-04-16 | 成都安迪生测量有限公司 | Integrated liquid adding gun seat |
| CN104847928A (en) * | 2015-05-18 | 2015-08-19 | 苏州赛智达智能科技有限公司 | Low-temperature filling valve on LNG storage tank |
| CN205401838U (en) * | 2016-03-08 | 2016-07-27 | 任焕轩 | On -vehicle gas cylinder filling opening of LNG |
| CN105864436A (en) * | 2016-06-13 | 2016-08-17 | 苏州先创流体控制技术有限公司 | End face sealed LNG (liquefied natural gas) filling port with positioning structure |
| CN206637064U (en) * | 2017-03-23 | 2017-11-14 | 罗达莱克斯阀门(上海)有限公司 | A kind of ultralow temperature filling valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178210A (en) * | 2020-09-03 | 2021-01-05 | 湖北三江航天红峰控制有限公司 | Ultralow-temperature pneumatic stop valve |
| CN112178210B (en) * | 2020-09-03 | 2022-12-23 | 湖北三江航天红峰控制有限公司 | Ultralow-temperature pneumatic stop valve |
| CN113757075A (en) * | 2021-09-23 | 2021-12-07 | 珠海格力电器股份有限公司 | Compressor muffler air inlet structure and reciprocating compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106870778B (en) | 2019-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106870778A (en) | A kind of ultralow temperature filling valve | |
| CN206637064U (en) | A kind of ultralow temperature filling valve | |
| CN206530708U (en) | A kind of anti-high pressure combines general plug sealing ring | |
| CN103821961A (en) | Ball valve | |
| CN209196146U (en) | A kind of fire safe type cryogenic globe valve | |
| CN104930214A (en) | Rapid installation type high pressure floating ball valve | |
| CN203686218U (en) | Ball valve | |
| CN206655970U (en) | A kind of low temperature gas recovery valve | |
| CN105673863B (en) | Baiting valve and reactor | |
| CN205859177U (en) | A kind of cryogenic globe valve | |
| CN205689796U (en) | A kind of screw thread type ball valve and valve rod | |
| CN206770772U (en) | Valve stem packing sealing structure | |
| CN204716994U (en) | A kind of explosion-proof type ammonia stop valve | |
| CN204851092U (en) | Oil pipe and sleeve pipe sealing connection device and body and coupling | |
| CN204099611U (en) | A kind of pipe-line system of LNG filling machine | |
| CN106907495A (en) | A kind of low temperature gas recovery valve | |
| CN207814473U (en) | A kind of hard sealing needle valve | |
| CN106015671A (en) | Self-closing valve for liquefied petroleum gas | |
| CN101725829B (en) | Pressure container plugging and guiding device | |
| CN205260900U (en) | Fire and static prevention ball valve | |
| WO2022217757A1 (en) | Valve | |
| CN205313071U (en) | Refuel sleeve pipe | |
| CN206799157U (en) | Oil filling riser hemispherical sealing-plug for petroleum vapor recovery | |
| CN103953763B (en) | Sealing structure based on unidirectional stop valve | |
| CN102817562B (en) | Sleeve joint |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |