CN108716546A - A kind of sealing ring and ductile iron pipe pressure testing sealing frock - Google Patents
A kind of sealing ring and ductile iron pipe pressure testing sealing frock Download PDFInfo
- Publication number
- CN108716546A CN108716546A CN201810820876.9A CN201810820876A CN108716546A CN 108716546 A CN108716546 A CN 108716546A CN 201810820876 A CN201810820876 A CN 201810820876A CN 108716546 A CN108716546 A CN 108716546A
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- Prior art keywords
- ring
- sealing
- ring plate
- plate
- sealing ring
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 116
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 229920003023 plastic Polymers 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000012372 quality testing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
- F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
- F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
- F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow in pipes or hoses
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Gasket Seals (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to sealing element and its sealing frock technical field, a kind of sealing ring and its ductile iron pipe pressure testing sealing frock are concretely disclosed.Constitute the main technical schemes of the sealing element：It is formed interior ring plate and outer ring plate, lip radially towards inner, section is outer ring plate is constituted in ring made of axially vertical and symmetrical " ㄥ " shape with its or the rubber-plastics material for " < > ".And above-mentioned sealing element is fixed in the tool assembly for being provided with o-ring groove.The sealing ring and its matching be provided with the sealing ring ductile iron pipe pressure testing sealing frock have the characteristics that sealing effect it is good, be easy dismount and it is with long service life.
Description
Technical field
The invention belongs to sealing frock technical fields, are concretely related to close used in a kind of ductile iron pipe quality testing
Seal and its ductile iron pipe pressure testing sealing frock for being provided with the sealing ring.
Background technology
Ductile iron pipe has essence, the performance of steel of iron, is mainly used for the mesolows such as municipal administration, industrial and mining enterprises' water supply, gas transmission
Pipe network has the characteristics that safe and reliable to operation, breakage rate is low, working drawing review is convenient, fast and antiseptic property is excellent.Ductile iron pipe
It is the quality and mechanical property of guarantee tube body in production process, it is necessary to carry out the water pressure test by root by defined pressure.Examination at present
Press operation is as shown in Figure 1, be that the female end 11 for the tube body 1 that will be fixed on pressure testing machine and socket end 12 are used and be mounted on tool assembly 2
Rubber seal or sealed nylon circle 3 in groove 22 hold out against to form tube body sealing, then the water-filling by being set in tool assembly 2
Mechanism 21 fetch water in tube body pressure testing inspection, with check tube body whether there is leakage phenomenon.During pressure testing, it is set to tooling
Body middle section, which is the sealing ring 3 of rectangle, must bear larger axial interpolated pressure to ensure sealing effect, therefore after a number of uses
The sealing ring of tube body end especially socket end can be caused to be sheared, tear failure, and influence its service life.In spite of factory
Family's sealing ring 3 used in small-bore tube socket is made of the nylon material for having anti-shear performance excellent, but because of its bullet
Property is poor, and the tube body axial direction pressure of bigger is needed to ensure to seal；To which hydraulic system can be caused to bear, load is high, failure is more,
And to the required precision of cast tube socket end face height, and fill up the old sealing ring of tooling slot replacement, dismounting it is time-consuming and laborious.
Invention content
It is an object of the invention to provide one kind can sealing effect be good, service life is long and detachable mounted sealing ring
And ductile iron pipe pressure testing sealing frock.
To achieve the above object, technical solution provided by the invention is：
A kind of sealing ring is formed interior ring plate and outer ring plate, lip is constituted radially towards ring made of inner rubber-plastics material.
The additional technical feature for constituting above-mentioned sealing ring further includes：
--- the radial section for constituting the ring is that the outer ring plate is in axially vertical and symmetrical " ㄥ " shape with its；
--- the radial section for constituting the ring is " < > " shape；
--- it is equal with the thickness of outer engaging portions of integral structure to constitute the thickness of ring plate and outer ring plate in the ring；
--- the width for constituting the interior ring plate of the lip is less than the width of the outer ring plate；
--- constitute the ring interior ring plate and outer ring plate in be provided with tissue layer formation enhancement layer ring；
--- constitute the ring interior ring plate and outer ring plate in setting elasticity layer formed elastic layer ring；
--- the corresponding medial surface of inside and outside ring plate for constituting the ring lip is channel form or the fiber crops that can form water gap
Planar；
--- constitute oblique outside the lip of the outer ring plate lateral surface of the ring, formation spill grooved ring.
A kind of ductile iron pipe pressure testing sealing frock, by being provided with the tool assembly of o-ring groove and can be fixed on therein
Sealing ring is constituted；The sealing ring is formed by interior ring plate and outer ring plate, lip is in and its axial direction radially towards inner, the described outer ring plate
Vertical and symmetrical section is ring composition made of the rubber-plastics material of " ㄥ " shape or section for " < > " shape, wherein described
The width of outer ring plate and the slot bottom width of the o-ring groove match.
The additional technical feature for constituting a kind of above-mentioned ductile iron pipe pressure testing sealing frock further includes：
--- it constitutes and is provided with the sealing ring fixing groove in the inner circle, outer circle or inside and outside round wall of the o-ring groove；
--- the sealing ring fixing mechanism is provided on the lateral wall in the o-ring groove；
--- the tapered ring in bell mouth shape is set in the cylindrical wall of the o-ring groove；
--- the oblique ring of inner ring piece end set of the sealing ring is constituted, which can be with the madial wall of the o-ring groove
Gap is formed to constitute into water ring.
Sealing ring and its ductile iron pipe pressure testing sealing frock provided by the present invention compared with prior art, has following excellent
Point：First, since the ring section for constituting sealing ring is that opening is radial inwardly, symmetrically " ㄥ " type or " < > " type rubber-plastics material
Manufactured ring is constituted so that becomes waiting for means of press seals from original slotting means of press seals between tube body and sealing ring：When operation by tube body with
Sealing ring top in the tooling of both ends is flat；Hydraulic pressure size does not influence sealing effect, thus long, close with sealing ring service life
Seal the advantages that effect is good, hydraulic system load is light, easy to operate；Second, due to being set in the interior ring plate and outer ring plate of composition ring
It is equipped with the enhancement layer ring of tissue layer formation, the service life of sealing ring can be extended；Third, due to being arranged in tooling body sealing ring
Sealing ring is formed by interior ring plate and outer ring plate in groove, lip radially towards inner, section is symmetrical " ㄥ " type or " < > " type rubber
Structure made of type rubber-plastics material is made in moulding material, has the characteristics that convenient for disassembly and assembly.
Description of the drawings
Fig. 1 is the using state structure diagram of the prior art；
Fig. 2 is the radial section structural schematic diagram of sealing ring provided by the invention；
Fig. 3 is the radial section structural schematic diagram of second of sealing ring provided by the invention；
Fig. 4 is the radial section structural schematic diagram of ductile iron pipe pressure testing sealing frock provided by the invention；
Fig. 5 is the use state radial section structural schematic diagram of Fig. 4 pressure testing sealing frocks；
Fig. 6 is second of structural schematic diagram for constituting ductile iron pipe pressure testing sealing frock body radial section.
Specific implementation mode
The structure and use principle of sealing ring of the present invention and its ductile iron pipe pressure testing sealing frock are done below in conjunction with the accompanying drawings
It is further described.
As shown in Fig. 2, the structure of the tooling sealing ring used provided by the present invention for ductile iron pipe tube body quality testing
Schematic diagram.Constitute the structure of the sealing ring held made of rubber-plastics material for withstanding ductile iron pipe tube body, the interior ring plate of socket
31, outer ring plate 32 and its outer ring portion（That is the interior ring plate of annular ring and the outer engaging portions of outer ring plate）It 34 is combined as a whole, inner ring
It is in be constituted to the ring that vertical and symmetrical cross sectional shape is " ㄥ " with its axis F that portion, which forms lip 4 radially towards innner and outer ring plate 32,.
When use（As shown in Figure 4,5）, the sealing ring 3 that structure is the ring composition that symmetrical cross sectional shape is " ㄥ " is divided
It Zhi Ru not hold, in the o-ring groove 22 in socket end tool assembly 2 so that the holding of tube body, socket 11,12 is respectively against sealing ring
3；Then by water-filling mechanism 21, into tube body 1, water filling is pressurizeed, 4 structure of lip that water can enter interior ring plate 31 and outer ring plate 32 is formed
At sealing ring annular groove in, filling high pressure water after hydraulic pressure can make interior ring plate 31 expand inwards and the bellmouth 11 that constitutes tube body and slotting
Mouth 12 compresses, and hydraulic pressure more high compression sealing performance between the two is better, i.e., becomes the structure from the slotting means of press seals of the prior art
Wait for means of press seals, can be thus achieved tube body the water pressure test detection.
In the structure for constituting above-mentioned sealing ring：
--- due in detection process, needing the holding of tube body, the sealing ring 3 in socket end and tool assembly 2 compresses, and prevents out
Now between the two can not caused by the thickness of interior ring plate 31 and the outer engaging portions 34 of outer ring plate 32 and its integral structure is inconsistent
It realizes sealing, constitute the thickness D of the outer engaging portions 34 of annular ring and is formed by the thickness of the interior ring plate 31 and outer ring plate 32 of lip
Degree is consistent；
--- in order to form the water inlet circuit 7 entered in lip 4, the width L1 of ring plate 31 in above-mentioned lip is constituted less than upper
State the width L2 of outer ring plate 32；
--- in order to further increase the service life of sealing ring, that is, the access times of sealing ring are improved, is constituting above-mentioned ring
Interior ring plate and outer ring plate in be provided with the enhancement layer ring 8 that corresponding " ㄥ " shape tissue layer (also including various elastic membranes) is formed；
--- in order to further increase the extruding elasticity of sealing ring, that is, further increases and hold, the extruding elasticity of socket end improves
Sealing performance, constitute above-mentioned ring interior ring plate and outer ring plate in be provided with accordingly preferably sheet metal or other elasticity
" ㄥ " shape elasticity circular layer 9 that plate is constituted；
--- in order to enable the water being injected into tube body to enter in the annular groove of the composition of ring lip 4, keep interior ring plate further
It expands outwardly, improve interior ring plate and holds, the crush seal effect of socket end, interior ring plate and the corresponding inside of outer ring plate（Table）
Face is pitted skin shape or channel form 30, to form water gap 10；
--- as shown in Fig. 1,4, in order to improve the sealing effect of the sealing ring and the o-ring groove 22 in tool assembly 2 so that
The outer ring plate lateral surface for constituting the sealing ring ring and the veneer in 22 base ring face 26 of o-ring groove seal, outer ring plate lateral surface 33
End（Namely lip）It is ramp-like outside being formed, form it into spill grooved ring 36；O-ring groove i.e. in sealing ring merging tool assembly
In 22, outer ring plate lateral surface 33 is outer ramp-like since end is formed, and just forms spill grooved ring 36, increases in the annular groove with pressure
Air be extruded（As shown in Figure 5）, to form vacuum effect, improve sealing ring and the o-ring groove 22 of tool assembly
Sealing effect is conducive to the sealing effect of sealing ring.
As shown in Figure 4,5, the ductile iron pipe pressure testing sealing frock structure of above structure sealing ring has been used, it is close by being provided with
The tool assembly 2 of seal groove 22 and the sealing ring 3 being fixed in groove are constituted；Wherein, which is lip 4, diameter by section
To inwardly, outer ring plate 32（The outer ring plate is in its axis F to vertical and symmetrical）Cross sectional shape is the rubber-plastics material of " ㄥ " shape
Manufactured ring is constituted.The width for constituting the outer ring plate 32 of above-mentioned ring is consistent with the groove width of 22 bottom of seal groove, makes the sealing
Circle can be fixed in the groove 22.The sealing frock of the structure can realize as described above held with tube body 1, socket end 11,12
Between sealing, formed tube body water filling sealing.Due to the structure sealing ring be lip 4 radially towards inner interior ring plate 31 and outer shroud
Piece 32 constitute, therefore also have the characteristics that installation and remove it is convenient.
In constituting above-mentioned ductile iron pipe pressure testing sealing frock structure：
--- form the sealing ring 3 and tool assembly groove 22 that ring is constituted to further increase interior ring plate 31 and outer ring plate 32
It is fixed, it may be used with lower structure：First, being provided with fixing groove 25 on lateral wall 24 in o-ring groove 22, installation is close
The outer engaging portions 34 for constituting sealing ring ring are caught in wherein when seal；It can also be as shown in fig. 6, in tooling body sealing ring
The side-walls of groove 22 are fastened or are welded and fixed a pressure ring 26 by bolt 29, can equally be made in o-ring groove 22
One is formed on lateral wall 24 for the fixed fixing groove 25 for constituting sealing ring annular ring outer engaging portions 34；It can also be in sealing ring
The madial wall 27 of groove 22 and or lateral wall 24 on concurrently or separately form the outer engaging portions for fixed composition sealing ring
34 fixing groove 25, for the fixation to sealing ring；
--- the tapered ring 241 in bell mouth shape is set on the lateral wall 24 of above-mentioned o-ring groove, not only in order to
The insertion of ductile iron pipe 1, and can more ensure the axial concentricity of tube body 1 and tooling body sealing ring；
--- as a shown in Figure 6, the oblique ring 37 of inner ring piece end set of above-mentioned sealing ring is constituted, which can be with sealing ring
The madial wall 27 of groove is constituted into water ring 28, is not only conducive to the entrance of water, but also can wash away the mud that lip 4 is formed in ring
Sand, to ensure the cleaning between lip.
Constitute in ductile iron pipe pressure testing sealing frock, be set in o-ring groove by interior ring plate 31 and outer ring plate
32 form, the sealing ring that lip 4 is constituted radially towards ring made of inner rubber-plastics material can also be structure as shown in Figure 3.
The radial section for the ring that the structure for constituting the sealing ring is is " < > " shape, i.e., in ring plate 31 and outer ring plate 32 with its diameter
To the structure of section R B at an acute angle.Constitute the thickness of the outer engaging portions 34 of ring plate 31 and outer ring plate 32 in the ring of the sealing structure circle
It is equal with the interior ring plate of formed lip 4 and the thickness of outer ring plate to spend D, and the width for constituting the interior ring plate of above-mentioned lip is less than
The width of the outer ring plate can be formed into the water inlet circuit in lip 4；It is provided with fabric in its interior ring plate and outer ring plate
The elastic layer ring 9 of enhancement layer ring 8, setting elasticity layer formation that layer is formed；Constitute the inside between the inside and outside ring plate of ring lip
Face is the channel form or pitted skin shape 30 that can form water gap.
Claims (14)
1. a kind of sealing ring, it is characterised in that：It is formed interior ring plate and outer ring plate, lip is radially towards made of inner rubber-plastics material
Ring is constituted.
2. a kind of sealing ring as described in claim 1, it is characterised in that：The radial section for constituting the ring is the outer shroud
Piece is in axially vertical and symmetrical " ㄥ " shape with its.
3. a kind of sealing ring as described in claim 1, it is characterised in that：The radial section for constituting the ring is " < > "
Shape.
4. a kind of sealing ring as described in claim 1, it is characterised in that：Constitute the thickness of ring plate and outer ring plate in the ring
It is equal with the thickness of the outer engaging portions of integral structure.
5. a kind of sealing ring as described in claim 1, it is characterised in that：The width for constituting the interior ring plate of the lip is less than institute
State the width of outer ring plate.
6. a kind of sealing ring as described in claim 1, it is characterised in that：Constitute the ring interior ring plate and outer ring plate in set
It is equipped with the enhancement layer ring of tissue layer formation.
7. a kind of sealing ring as described in claim 1, it is characterised in that：Constitute the ring interior ring plate and outer ring plate in set
It is equipped with the elastic layer ring of elastic layer formation.
8. a kind of sealing ring as described in claim 1, it is characterised in that：The inside and outside ring plate for constituting the ring lip corresponds to
Medial surface be the channel form or pitted skin shape that can form water gap.
9. a kind of sealing ring as described in claim 1, it is characterised in that：Constitute the lip of the outer ring plate lateral surface of the ring
It is outer oblique, form spill grooved ring.
10. a kind of ductile iron pipe pressure testing sealing frock, by being provided with the tool assembly of o-ring groove and can be fixed on therein
Sealing ring is constituted；It is characterized in that：The sealing ring is formed by interior ring plate and outer ring plate, lip is radially towards inner, the described outer shroud
Ring is constituted made of rubber-plastics material of the piece in axially vertical and symmetrical " ㄥ " shape with its or section for " < > " shape, wherein
The width of the outer ring plate and the slot bottom width of the o-ring groove match.
11. a kind of ductile iron pipe pressure testing sealing frock as claimed in claim 10, it is characterised in that：It is recessed to constitute the sealing ring
It is provided with the sealing ring fixing groove on the inner circle of slot, outer circle or inside and outside round wall.
12. a kind of ductile iron pipe pressure testing sealing frock as claimed in claim 10, it is characterised in that：The o-ring groove
In lateral wall on be provided with the sealing ring fixing mechanism.
13. a kind of ductile iron pipe pressure testing sealing frock as claimed in claim 10, it is characterised in that：The o-ring groove
Cylindrical wall on the tapered ring in bell mouth shape is set.
14. a kind of ductile iron pipe pressure testing sealing frock as claimed in claim 10, it is characterised in that：Constitute the sealing ring
The oblique ring of inner ring piece end set, the oblique ring can form gap with the madial wall of the o-ring groove and constitute into water ring.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820876.9A CN108716546A (en) | 2018-07-24 | 2018-07-24 | A kind of sealing ring and ductile iron pipe pressure testing sealing frock |
| CN201980005466.1A CN111295537B (en) | 2018-07-24 | 2019-07-12 | Sealing ring and tool assembly for pressure test sealing of cast tube |
| PCT/CN2019/095759 WO2020019999A1 (en) | 2018-07-24 | 2019-07-12 | Sealing ring for pressure testing and sealing of cast pipe, and tooling assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820876.9A CN108716546A (en) | 2018-07-24 | 2018-07-24 | A kind of sealing ring and ductile iron pipe pressure testing sealing frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108716546A true CN108716546A (en) | 2018-10-30 |
Family
ID=63913684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810820876.9A Pending CN108716546A (en) | 2018-07-24 | 2018-07-24 | A kind of sealing ring and ductile iron pipe pressure testing sealing frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108716546A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020019999A1 (en) * | 2018-07-24 | 2020-01-30 | 衡水威达橡塑有限公司 | Sealing ring for pressure testing and sealing of cast pipe, and tooling assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205568A (en) * | 1991-03-14 | 1993-04-27 | Festo Kg | Sealing ring |
| US5951022A (en) * | 1997-10-06 | 1999-09-14 | Gorman Company, Inc. | Fluid seal device with reinforced dynamic lip |
| CN102484268A (en) * | 2009-07-17 | 2012-05-30 | 通用汽车环球科技运作有限责任公司 | Improved seal performance for hydrogen storage and supply systems |
| CN205745301U (en) * | 2016-06-14 | 2016-11-30 | 宁波美亚特精密传动部件有限公司 | Sealing ring |
| CN106764167A (en) * | 2017-03-15 | 2017-05-31 | 连云港宏泽机械设备有限公司 | Double seals ultralow temperature swivel joint |
| CN208885982U (en) * | 2018-07-24 | 2019-05-21 | 衡水威达橡塑有限公司 | A kind of sealing ring and ductile iron pipe pressure testing sealing frock |
-
2018
- 2018-07-24 CN CN201810820876.9A patent/CN108716546A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205568A (en) * | 1991-03-14 | 1993-04-27 | Festo Kg | Sealing ring |
| US5951022A (en) * | 1997-10-06 | 1999-09-14 | Gorman Company, Inc. | Fluid seal device with reinforced dynamic lip |
| CN102484268A (en) * | 2009-07-17 | 2012-05-30 | 通用汽车环球科技运作有限责任公司 | Improved seal performance for hydrogen storage and supply systems |
| CN205745301U (en) * | 2016-06-14 | 2016-11-30 | 宁波美亚特精密传动部件有限公司 | Sealing ring |
| CN106764167A (en) * | 2017-03-15 | 2017-05-31 | 连云港宏泽机械设备有限公司 | Double seals ultralow temperature swivel joint |
| CN208885982U (en) * | 2018-07-24 | 2019-05-21 | 衡水威达橡塑有限公司 | A kind of sealing ring and ductile iron pipe pressure testing sealing frock |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020019999A1 (en) * | 2018-07-24 | 2020-01-30 | 衡水威达橡塑有限公司 | Sealing ring for pressure testing and sealing of cast pipe, and tooling assembly |
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Application publication date: 20181030 |