CN205877206U - Axial end face seal's LNG filler - Google Patents
Axial end face seal's LNG filler Download PDFInfo
- Publication number
- CN205877206U CN205877206U CN201620564743.6U CN201620564743U CN205877206U CN 205877206 U CN205877206 U CN 205877206U CN 201620564743 U CN201620564743 U CN 201620564743U CN 205877206 U CN205877206 U CN 205877206U
- Authority
- CN
- China
- Prior art keywords
- valve body
- seals
- spool
- axial end
- filler
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an axial end face seal's LNG filler, including the valve body, set up the case in valve body cavity, the end cover that is connected with valve body end to and set up the spring between case and end cover, and being equipped with the thimble between case and the spring, thimble one end is connected with the spring, and the other end is equipped with most advanced portion, and a tangible form and a pointed end depressed part that suits are established to the spool end face. Accurate location is carried out through the pointed end of thimble to the case to this kind of design, has overcome the accumulation tolerance that produces behind each unit construction, and the spring is applyed elasticity on the central point of case through the thimble in addition, can prevent like this that the case from leading to the atress uneven because of self positional deviation, spring distortion or the reason of rocking, avoids the case to take place skew or slope for the valve body to ensure that the case and the sealed face of valve body contact well all the time.
Description
Technical field
This utility model relates to the technical field of LNG filler, the LNG filling sealed particularly to a kind of axial end
Mouthful.
Background technology
LNG filler is mainly used in the filling of the storage tank super-low liquid of LNG automobile, steamer etc., including LNG and liquid nitrogen etc.
Industrial gases.
The existing filler in market, is technically derived from U.S. JC Carter and Macro(and now belongs to the sub-brand name of ECI),
Almost all uses radial seal mode, and the design sealing structure and sealing member is the most the same, is all to radially slide sealing,
Using the sealing member that spring coordinates PTFE or PCTFE, the size of sealing member is the most exactly the same, and only filler outward appearance is slightly
Difference.Macro(mark Technology Co., Ltd.) disclosed in a liquefied natural gas (LNG) filler, as it is shown in figure 1, it seals
Part 101 is arranged between filler spool 102 and filler valve body 103, and filler spring 104 is directly and filler spool 102
Connecting, the filler of this structure, every time the when of filling LNG, liquid feeding rifle backs down filler spool 102, filler spool 102
On sealing member 101 and the circular hole of filler valve body 103 import between use slipper seal mode, occur relative displacement, to close
Envelope surface produces certain abrasion.In view of China LNG heavy truck and bus running environment have partial particulate shape dust or
Other foreign bodies, once enter filler import, it is easy to be shoved into the cooperation face that seals, and during slipper seal, right
Sealing surface causes permanent scratch, thus causes serious leakage failure, causes potential safety hazard.
Only having a company on world market at present, Sichuan May Flower precision optical machinery company limited have employed non-radial slip
The mode sealed, as in figure 2 it is shown, the filler of the said firm have employed conical surface seal, valve body sealing surface 201 is obliquely installed, spool
On ring packing 202 the most relative with valve body sealing surface 201 slide, compression spring 203 is directly connected with spool.This structure solution
Determine the problem of sealing surface scuffing, damage, but this sealing means has lacked position assurance structure, and compression spring 203 is easy
Run-off the straight and rocking, so can cause skew and the inclination of spool, and the spring force size distribution being applied on spool be not
All, the direction of spring force is inclined to valve axis direction, causes the ring packing 202 on spool relative with valve body sealing surface 201
Tilt, thus cause band not overlap, leakage problem occurs.
Utility model content
The purpose of utility model: this utility model discloses the LNG filler that a kind of axial end seals, and can solve spool
Orientation problem, it is ensured that spool overlaps all the time with the sealing surface of valve body, improve seal reliability and stability, it is to avoid reveal ask
The generation of topic.
Technical scheme: in order to realize object above, the utility model discloses the LNG filling that a kind of axial end seals
Mouthful, including valve body, it is arranged on the spool in valve body hollow cavity, the end cap being connected with valve end, and it is arranged on spool
And the spring between end cap, is provided with thimble between spool and spring, thimble one end is connected with spring, and the other end is provided with tip
Portion, spool end is provided with the depressed part that shape adapts with point.This design carries out essence by the tip of thimble to spool
Certainly position, the cumulative limit produced after overcoming each unit construction, additionally elastic force is put in spool by spring by thimble
On heart point, spool so it is possible to prevent to cause unbalance stress because of self-position deviation, camber of spring or the reason rocked, it is to avoid valve
Skew is there is or tilts, to guarantee that spool contacts well all the time with the sealing surface of valve body in core relative to valve body.
Further, the LNG filler that above-mentioned a kind of axial end seals, described valve inner is provided with the ladder of projection
Portion, spool is provided with the sealing fit portion of projection, and wherein sealing fit portion and end difference fit and the sealing surface that formed and valve body
Axis perpendicular.This axial end that is designed with seals, it can be ensured that sealing surface contacts well all the time；Valve core sealed cover with
The most relatively slide between valve body sealing surface, it is to avoid foreign body, to the scuffing of sealing surface and abrasion, improves the use longevity of filler
Life.
Further, the LNG filler that above-mentioned a kind of axial end seals, described spool is provided with away from that one end of thimble
Axis of guide portion, valve inner is provided with the end difference of projection, end difference offers pilot hole.This shaping-orientation axle portion is guiding
Move under the regulation in hole, it is ensured that spool and the relative position relation of valve body, and spool is guided and positions, its position is public
Difference controls within the specific limits；This guide-localization combines the precise positioning of thimble, overcomes sealing that cumulative limit brings not
Good, and improve the stability in running and reliability.
Further, the LNG filler that above-mentioned a kind of axial end seals, described thimble offers one group of fluid passage
Hole.This design makes the fluid fluid passage holes from thimble centre position flow out, and can improve the flow of fluid, accelerate filling
Speed.
Further, the LNG filler that above-mentioned a kind of axial end seals, also include the flange being set on valve body, its
Being connected with valve body screw thread, valve body is provided with spacing block set.This design is with the Welder of the current industry universal of threaded replacement
Skill, it is to avoid welding causes valve body thermal deformation and produces thermal stress；Thermal deformation itself may result in valve seal facial disfigurement, therefore
Cause seal failure, and the harm of thermal stress is the most hidden bigger, owing to being likely difficult to discover seal failure under room temperature, but
During ultralow-temperature operation conditions, thermal stress alternating action remaining when ultralow temperature stress and welding, valve body can be caused to produce unpredictalbe
Deformation, thus there is seal failure, threaded design then completely eliminates this risk；Spacing block set may insure that and limits
Determine relative position when flange connects with valve body.
Further, the LNG filler that above-mentioned a kind of axial end seals, described point is tapered, and depressed part is cone
Shape hole, wherein the cone angle of depressed part is more than the cone angle of point.This Design and Machining is convenient, and the precision of location is high.
Further, the LNG filler that above-mentioned a kind of axial end seals, described fluid passage holes is rounded or slotted hole
Shape, it is distributed with circular array column-shaped.This design increases the gross area of fluid passage holes as far as possible, it is ensured that the flow of fluid, and
It is made to flow uniform, stable.
Further, the LNG filler that above-mentioned a kind of axial end seals, described axis of guide portion is provided with one group of guiding gutter,
Guiding gutter circular array shape is distributed.This design make fluid can smooth and easy circulation ensure that its flow, guiding gutter reasonable
Distribution makes the flowing of fluid evenly, stably.
Further, the LNG filler that above-mentioned a kind of axial end seals, described sealing fit portion includes sealing ring, close
Being fitted by the sealing surface of sealing ring with end difference in envelope auxiliary section, the surface of described sealing ring is convex-shaped surface.This design will
Sealing ring is as single parts, and it can select different materials from spool, the most both can guarantee that the overall intensity of spool and
Rigidity, can guarantee that again valve core sealed cover has the features such as corrosion-resistant, low temperature resistant, not adhesion；The sealing ring of convex-shaped surface and ladder
When the sealing surface in portion is fitted, both are linear contact, and sealing surface reduces with the probability of abnormal contact, and washing away at fluid
Under, foreign body is not easy to remain on convex surface, reduces the possibility that sealing surface is scratched, damages.
Further, the LNG filler that above-mentioned a kind of axial end seals, described spool includes that axis of guide portion, spill are close
Envelope and valve core base, wherein female seat is set in the end in axis of guide portion, and described depressed part is arranged on the end of valve core base,
The valve core base other end is provided with installation axle portion, installs axle portion and is connected with axis of guide portion through female seat, and axis of guide portion is provided with
The installing hole that shape adapts with installation axle portion.This design utilizes axis of guide portion and valve core base that female seat is located in it
In, it addition, the side of female seat is free state, do not acted on by external force, make female seat be not easy deformation and move
Position, mounting stability is good, it is ensured that sealing surface contacts well all the time, prevents leakage；The outer ring of female seat and the end face of end difference
Contact, forms axial end and seals, improve the service life of female seat.
Technique scheme is it can be seen that this utility model has the advantages that one described in the utility model
The LNG filler that axial end seals, spool contacts well with the sealing surface of valve body, improves the reliability of sealing and stablizes
Property；Avoid scuffing and the damage of sealing surface, improve the service life of filler sealing member；Effectively reduce risk of leakage with
And the after-sales service cost therefore brought；Improve safety, ensured that gas station operator's is safe and healthy；Improve stream
The flow of body, accelerates filling speed；The wind of the seal failure eliminating welded stress and ultralow temperature stress alternation and cause
Danger, improves the life and reliability of product.
Accompanying drawing explanation
Fig. 1 is the structure chart of a LNG filler disclosed in mark Technology Co., Ltd. in prior art；
Fig. 2 is the LNG filling of a conical surface seal disclosed in the May Flower precision optical machinery company limited of Sichuan in prior art
The structure chart of mouth；
Fig. 3 is the section of LNG the first embodiment of filler that a kind of axial end described in the utility model seals
Structure chart；
Fig. 4 is the guiding of LNG the first embodiment of filler that a kind of axial end described in the utility model seals
The structure chart in axle portion；
Fig. 5 is the thimble of LNG the first embodiment of filler that a kind of axial end described in the utility model seals
Structure chart；
Fig. 6 is the section of LNG filler the second embodiment that a kind of axial end described in the utility model seals
Structure chart；
Fig. 7 is the thimble of LNG filler the second embodiment that a kind of axial end described in the utility model seals
Structure chart；
Fig. 8 is the section of LNG the third embodiment of filler that a kind of axial end described in the utility model seals
Structure chart；
In figure: 1-valve body, 11-end difference, 12-pilot hole, 13-spacing block set, 2-spool, 21-depressed part, 22-seals
Auxiliary section, 23-axis of guide portion, 24-guiding gutter, 25-sealing ring, 26-female seat, 27-valve core base, 28-installs axle portion,
29-installing hole, 30-spill base, 31-ring packing, 3-end cap, 4-spring, 5-thimble, 51-point, 52-fluid passage
Hole, 6-flange, 101-sealing member, 102-filler spool, 103-filler valve body, 104-filler spring, 201-valve body is close
Front cover, 202-ring packing, 203-compression spring.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model detailed description of the invention is described in detail.
Embodiment 1
The first embodiment of the LNG filler that a kind of axial end of the present utility model seals, such as Fig. 3 to Fig. 5 institute
Show, including valve body 1, be arranged on the spool 2 in valve body 1 hollow cavity, the end cap 3 being connected with valve body 1 end, and be arranged on
Spring 4 between spool 2 and end cap 3, is provided with thimble 5 between spool 2 and spring 4, thimble 5 one end is connected with spring 4, another
End is provided with tapered point 51, and corresponding, spool 2 end face is provided with the depressed part 21 that shape adapts with point 51,
Depressed part 21 is bellmouth, and wherein the cone angle of depressed part 21 is more than the cone angle of point 51.The internal ladder being provided with projection of valve body 1
Portion 11, end difference 11 offers pilot hole 12, and spool 2 includes axis of guide portion 23, female seat 26 and valve core base 27, wherein
Axis of guide portion 23 can move under the regulation of pilot hole 12, and female seat 26 is set in the end in axis of guide portion 23, described depression
Portion 21 is arranged on the end of valve core base 27, and valve core base 27 other end is provided with installation axle portion 28, installs axle portion 28 through spill
Sealing 26 to be connected with axis of guide portion 23, axis of guide portion 23 is provided with shape and installs the installing hole 29 that axle portion 28 adapts, wherein
The connected mode installed between axle portion 28 and installing hole 29 is interference fit or threadeds；Over-surplus fit structure is simple and reliable,
Processing is with easy for installation；Threaded readily accessible, the replaceability of female seat 26 is good, it addition, the bottom of female seat 26 by
In deformation, provide pretightning force for threadeding between axis of guide portion 23 with valve core base 27, prevent threaded loosening.
The outer ring of female seat 26 and the end contact of end difference 11, form axial end and seal, the cross section of female seat 26 outer ring
In convex curve shape, further, in mentioned ridge-shaped or semicircle, the material of female seat 26 is PTFE or PCTFE, or modification
PTFE, or the PCTFE of modification.Thimble 5 offers one group of rounded fluid passage holes 52, and it is distributed with circular array column-shaped, its
Quantity is 4 to 6；Axis of guide portion 23 is provided with one group of guiding gutter 24, and guiding gutter 24 circular array shape is distributed, and its quantity is 3
Individual to 5.Being arranged with flange 6 on valve body 1, it is threadeded with valve body 1, and valve body 1 is provided with spacing block set 13, is used for limiting method
The position of blue 6.For threadeding between end cap 3 with valve body 1, this mode is readily accessible, facilitates the replacement of parts, and screw thread is even
Meet place and use thread locking adhesive or screw thread fastening glue, so can improve sealing and mounting stability, it addition, the end of valve body 1
Face is provided with valve seal material with the place of cooperation of end cap 3, and this design can improve sealing, prevents fluid from letting out from installing gap
Leakage, the compression of valve seal material simultaneously can be threaded offer pretightning force, makes connection more firm.Valve core base 27 is provided with recessed
That end falling into portion 21 is additionally provided with one group of blind hole, and the instrument that may utilize during maintenance probes into blind hole and clamps spool 2, and is drawn off.
Embodiment 2
The second embodiment of the LNG filler that a kind of axial end of the present utility model seals, such as Fig. 6 and Fig. 7 institute
Showing, spool 2 is provided with the sealing fit portion 22 of projection, and wherein sealing fit portion 22 and end difference 11 fit and the sealing surface that formed
It is that axial end seals with the sealing means of the axis perpendicular of valve body 1, i.e. valve body 1 with spool 2；Further, cooperation is sealed
Portion 22 includes that sealing ring 25, sealing ring 25 are arranged on the surface of sealing fit portion 22, sealing fit portion 22 by sealing ring 25 with
The sealing surface laminating of end difference 11, the surface of described sealing ring 25 is convex-shaped surface；The design of spool 2 integration, simple in construction,
Reduce cost, and reduce cumulative limit.Thimble 5 offers one group of fluid passage holes 52, and fluid passage holes 52 is in the length of bending
Circle hole shape, it is with the distribution of circular array column-shaped, and its quantity is 3 or 4.Other structures are same as in Example 1.
Embodiment 3
The third embodiment of the LNG filler that a kind of axial end of the present utility model seals, as shown in Figure 8, valve
Core 2 includes axis of guide portion 23, spill base 30 and ring packing 31, and wherein the cross section of spill base 30 is concave, its with
Axis of guide portion 23 forms the mounting groove of ring packing 31, is pressed into wherein by ring packing 31 during assembling, other structures and embodiment 1
Identical.So the structure of spool 2 is the most relatively simple, simple and convenient assembly, ring packing 31 fixing more stable, reliable.
The above is only preferred implementation of the present utility model, it should be noted that for the ordinary skill of the art
For personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvement, these improve and also should be regarded as this
The protection domain of utility model.
Claims (10)
1. the LNG filler that axial end seals, including valve body (1), is arranged on the spool in valve body (1) hollow cavity
(2), the end cap (3) being connected with valve body (1) end, and the spring (4) being arranged between spool (2) and end cap (3), it is special
Levying and be: be provided with thimble (5) between spool (2) and spring (4), thimble (5) one end is connected with spring (4), and the other end is provided with
Point (51), spool (2) end face is provided with the depressed part (21) that shape adapts with point (51).
The LNG filler that a kind of axial end the most according to claim 1 seals, it is characterised in that: in described valve body (1)
Portion is provided with the end difference (11) of projection, and spool (2) is provided with the sealing fit portion (22) of projection, wherein sealing fit portion (22) and rank
The sealing surface that ladder portion (11) fits and formed and the axis perpendicular of valve body (1).
The LNG filler that a kind of axial end the most according to claim 1 seals, it is characterised in that: described spool (2) is remote
Axis of guide portion (23) it is provided with from that one end of thimble (5), the internal end difference (11) being provided with projection of valve body (1), end difference (11)
On offer pilot hole (12).
The LNG filler that a kind of axial end the most according to claim 1 seals, it is characterised in that: described thimble (5) is opened
It is provided with one group of fluid passage holes (52).
The LNG filler that a kind of axial end the most according to claim 1 seals, it is characterised in that: also include being set in
Flange (6) on valve body (1), it threadeds with valve body (1), and valve body (1) is provided with spacing block set (13).
The LNG filler that a kind of axial end the most according to claim 1 seals, it is characterised in that: described point
(51) tapered, depressed part (21) is bellmouth, and wherein the cone angle of depressed part (21) is more than the cone angle of point (51).
The LNG filler that a kind of axial end the most according to claim 4 seals, it is characterised in that: described fluid passage
Hole (52) is rounded or slotted hole shape, and it is distributed with circular array column-shaped.
The LNG filler that a kind of axial end the most according to claim 3 seals, it is characterised in that: described axis of guide portion
(23) being provided with one group of guiding gutter (24), guiding gutter (24) circular array shape is distributed.
The LNG filler that a kind of axial end the most according to claim 2 seals, it is characterised in that: described sealing coordinates
Portion (22) includes sealing ring (25), and sealing fit portion (22) is fitted by the sealing surface of sealing ring (25) with end difference (11), institute
The surface stating sealing ring (25) is convex-shaped surface.
The LNG filler that a kind of axial end the most according to claim 3 seals, it is characterised in that: described spool (2)
Including axis of guide portion (23), female seat (26) and valve core base (27), wherein female seat (26) is set in axis of guide portion
(23) end, described depressed part (21) is arranged on the end of valve core base (27), and valve core base (27) other end is provided with installation
Axle portion (28), installs axle portion (28) and is connected with axis of guide portion (23) through female seat (26), and axis of guide portion (23) are provided with shape
The installing hole (29) that shape adapts with installation axle portion (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620564743.6U CN205877206U (en) | 2016-06-13 | 2016-06-13 | Axial end face seal's LNG filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620564743.6U CN205877206U (en) | 2016-06-13 | 2016-06-13 | Axial end face seal's LNG filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205877206U true CN205877206U (en) | 2017-01-11 |
Family
ID=57690183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620564743.6U Withdrawn - After Issue CN205877206U (en) | 2016-06-13 | 2016-06-13 | Axial end face seal's LNG filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205877206U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107387823A (en) * | 2017-08-17 | 2017-11-24 | 北京航天发射技术研究所 | The automatic anti-icing equipment of cryogenic loading system vacuum cup isolation type and method |
| CN109812698A (en) * | 2019-02-28 | 2019-05-28 | 张家港氢云新能源研究院有限公司 | High-pressure hydrogenation machine Pull breaking ualve |
| CN112127859A (en) * | 2020-11-02 | 2020-12-25 | 沧州瑞泰石油机械有限公司 | Two-way flow control valve, water control screen pipe and well completion pipe string |
| CN114215659A (en) * | 2021-11-30 | 2022-03-22 | 上海宇航系统工程研究所 | Docking mechanism for propelling rod and filling valve of filling gun in liquid rocket propellant filling process |
-
2016
- 2016-06-13 CN CN201620564743.6U patent/CN205877206U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105864436B (en) * | 2016-06-13 | 2019-03-19 | 苏州先创流体控制技术有限公司 | A kind of end face seal LNG filler with location structure |
| CN107387823A (en) * | 2017-08-17 | 2017-11-24 | 北京航天发射技术研究所 | The automatic anti-icing equipment of cryogenic loading system vacuum cup isolation type and method |
| CN107387823B (en) * | 2017-08-17 | 2019-04-05 | 北京航天发射技术研究所 | The automatic anti-icing equipment of cryogenic loading system vacuum chuck isolation type and method |
| CN109812698A (en) * | 2019-02-28 | 2019-05-28 | 张家港氢云新能源研究院有限公司 | High-pressure hydrogenation machine Pull breaking ualve |
| CN112127859A (en) * | 2020-11-02 | 2020-12-25 | 沧州瑞泰石油机械有限公司 | Two-way flow control valve, water control screen pipe and well completion pipe string |
| CN114215659A (en) * | 2021-11-30 | 2022-03-22 | 上海宇航系统工程研究所 | Docking mechanism for propelling rod and filling valve of filling gun in liquid rocket propellant filling process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170111 Effective date of abandoning: 20190319 |