CN108507721B - A kind of sealing performance test method of flower bud shape sealing ring - Google Patents
A kind of sealing performance test method of flower bud shape sealing ring Download PDFInfo
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- CN108507721B CN108507721B CN201810240917.7A CN201810240917A CN108507721B CN 108507721 B CN108507721 B CN 108507721B CN 201810240917 A CN201810240917 A CN 201810240917A CN 108507721 B CN108507721 B CN 108507721B
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- 238000007789 sealing Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000011056 performance test Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 238000010998 test method Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 15
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of sealing performance test methods of flower bud shape sealing ring, comprising the following steps: S1, flower bud shape sealing ring is put into inside the annular spacing groove inside cylinder upper end, and cylinder is caught in inside the card slot of connecting tube bottom inner portion and is screwed by fixture block；S2, starting telescopic cylinder release water tank from the inside of supporting table, and cylinder and connecting tube are immersed in the water inside water tank；S3, piston is pushed using driving device, to the internal pressurization of piston cylinder, by gradually pressurizeing, the achievable sealing performance to flower bud shape sealing ring is tested.Test method of the invention is easy to operate, and improves the test effect of test device.
Description
Technical field
The invention belongs to experiments of sealing performance equipment technical fields, and in particular to a kind of sealing performance survey of flower bud shape sealing ring
Method for testing.
Background technique
Flower bud shape sealing ring is also known as piston rod seals, is that a kind of suppressed by rubber ring in Y shape folder fabric rubber ring and lip is glued
Unidirectional solid sealing ring made of conjunction.It is mainly used on coal industry hydraulic support column, is a kind of common accessory, mainly
There are polyurethane compositions to be molded.Effect is to prevent from the emulsion in hydraulic cylinder from revealing to cause hydraulic direct protective function is discarded to set.It is suitable
For hydraulic cylinder piston rod reciprocating motion sealing device, it can also be used to the static seal device of flange end cap.In flower bud shape sealing ring
In production process, needs to carry out experimental test to the sealing performance of flower bud shape sealing ring, to prevent defective products from dispatching from the factory, not only influence enterprise
The prestige of industry, while will also result in the return of goods, loss is brought to manufacturer.
The sealing property tester of existing flower bud shape sealing ring is most of, and structure is complicated, and cumbersome, testing efficiency is low
Under.For this purpose, proposing a kind of sealing performance test method of flower bud shape sealing ring.
Summary of the invention
The purpose of the present invention is to provide a kind of sealing performance test methods of flower bud shape sealing ring, to solve above-mentioned background skill
The problem of proposing in art, optimal inspection method make easy to operate, testing efficiency raising, and improve the test effect of test device
Fruit.
To achieve the above object, present invention employs following technical solutions:
A kind of experiments of sealing performance method of flower bud shape sealing ring, includes the following steps:
S1, flower bud shape sealing ring is put into inside the annular spacing groove inside cylinder upper end, and cylinder is caught in by fixture block
Inside the card slot of connecting tube bottom inner portion and screw；
S2, starting telescopic cylinder release water tank from the inside of supporting table, and cylinder and connecting tube are immersed inside water tank
In water；
S3, piston is pushed using driving device, it is achievable to flower bud shape by gradually pressurizeing to the internal pressurization of piston cylinder
The sealing performance of sealing ring is tested.
The test method uses a kind of sealing property tester of flower bud shape sealing ring comprising supporting table, it is described
The inside of supporting table is fixedly installed with telescopic cylinder, fixes at the telescopic rod of the telescopic cylinder and the bottom centre position of pallet
Connection, the top of the pallet are fixed with water tank, and the pallet and water tank are arranged at the inside of supporting table, the supporting table
Top side be fixedly welded with L-type support, the upper end inner roof wall lower part of the L-type support is fixedly installed with piston cylinder, described
The inside of piston cylinder is equipped with piston, is fixedly connected at the central upper portion position of the piston with the output shaft of driving device, described
Driving device is fixedly mounted on the top of L-type support, and the bottom connection of the piston cylinder is equipped with connecting tube, the bottom of the connecting tube
End is internal to offer card slot, and the bottom end of the connecting tube is equipped with flange collar, and the bottom end of the connecting tube is connected with cylinder, the cylinder
Upper end two sides be symmetrically arranged with two fixture blocks, and the annular spacing groove to match with flange collar is offered inside the upper end of cylinder, institute
The bottom inner portion for stating connecting tube is symmetrically arranged with two insert ports to match with fixture block.
Preferably, the top of the water tank is hatch frame.
Preferably, the bottom four corners of the supporting table are symmetrically arranged with four rubber supporting legs.
Preferably, the piston cylinder is made of transparent toughened plastic material, and the outside of piston cylinder is equipped with graduation mark.
Preferably, it is equipped with fixed ear outside the upper end of the piston cylinder, the fixed ear is mounted by means of bolts on L-type
The upper end inner roof wall lower part of bracket.
Preferably, the driving device is cylinder or electric cylinders.
Preferably, the external side of the supporting table is equipped with dismountable cover plate by screw.
Preferably, the table top of the supporting table offers the through-hole for water tank lifting.
Preferably, the upper end bottom of the fixture block is equipped with inclined-plane.
Preferably, the upper end bottom of the fixture block is equipped with inclined-plane.
Preferably, in order to make the engaging of fixture block more closely with card slot, the angle α of the inclined-plane and horizontal plane is 30-
45 degree.
Preferably, the angle α of the inclined-plane and horizontal plane meets:
Wherein, β is piston cylinder material coefficient, when the material of piston cylinder is cast iron, β 0.074-0.092；Work as piston cylinder
Material coefficient, when the material of piston cylinder is stainless steel, β 0.072-0.124；T by flower bud shape sealing ring from test when bear
Pressure.
Compared with prior art, the beneficial effects of the present invention are:
1, the sealing performance test method of flower bud shape sealing ring of the invention passes through solid in the upper end inner roof wall lower part of L-type support
Dingan County fills piston cylinder, and the inside of piston cylinder is equipped with piston, fixes at the central upper portion position of piston with the output shaft of driving device
Connection drives the piston piston cylinder internal pressurization using driving device, using pressure to the experiments of sealing performance of flower bud shape sealing ring,
So that the apparatus structure is simple, it is easy to operate；
2, the bottom connection of the sealing performance test method piston cylinder of flower bud shape sealing ring of the invention is equipped with connecting tube, connection
The bottom inner portion of pipe offers card slot, and the bottom end of connecting tube is equipped with flange collar, and the bottom end of connecting tube is connected with cylinder, the upper end of cylinder
Two sides are symmetrically arranged with two fixture blocks, and the annular spacing groove to match with flange collar is offered inside the upper end of cylinder, connecting tube
Bottom inner portion is symmetrically arranged with two insert ports to match with fixture block, can quickly put flower bud shape sealing ring through the above arrangement
Enter inside annular spacing groove, and cylinder is caught in inside connecting tube, and resist flower bud shape sealing ring with flange collar, so that connecting tube and column
Body forms the space of a sealing, can quickly test flower bud shape sealing ring, so that experimental test efficiency greatly improves；
3, the sealing performance test method of flower bud shape sealing ring of the invention passes through the angle on setting inclined-plane and horizontal plane, and
The relationship for the pressure that the angle and piston rod material, flower bud shape sealing ring are born in test, keeps fixture block more tight with card slot
Close engaging improves the test effect of the test device
Detailed description of the invention
Fig. 1 is the sealing property testing equipment schematic diagram of flower bud shape sealing ring of the invention；
Fig. 2 is the sealing property testing equipment connecting tube cross-sectional view of flower bud shape sealing ring of the invention；
Fig. 3 is the sealing property testing equipment tube structure schematic diagram of flower bud shape sealing ring of the invention；
Fig. 4 is the sealing property testing equipment fixture block structural schematic diagram of flower bud shape sealing ring of the invention；
Fig. 5 is the sealing property testing equipment connecting tube bottom view of flower bud shape sealing ring of the invention；
Fig. 6 is the sealing property testing equipment front view of flower bud shape sealing ring of the invention；
Fig. 7 is the sealing property testing equipment supporting table top view of flower bud shape sealing ring of the invention；
Fig. 8 is the sealing performance test method flow chart of flower bud shape sealing ring of the invention.
In figure: 1 supporting table, 2L type bracket, 3 driving devices, 4 cylinders, 5 connecting tubes, 6 pistons, 7 bolts, 8 fixed ears, 9 are lived
It is plug cylinder, 10 water tanks, 11 pallets, 12 telescopic cylinders, 13 screws, 14 dismountable cover plates, 15 graduated scales, 16 through-holes, 17 card slots, 18 convex
Circle, 19 fixture blocks, 20 inclined-planes, 21 annular grooves, 22 insert ports, 23 rubber supporting legs.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
Embodiment 1
Fig. 1-8 is please referred to, the present invention provides a kind of technical solution: a kind of experiments of sealing performance method of flower bud shape sealing ring,
Include the following steps:
S1, flower bud shape sealing ring is put into inside the annular spacing groove inside cylinder upper end, and cylinder is caught in by fixture block
Inside the card slot of connecting tube bottom inner portion and screw；
S2, starting telescopic cylinder release water tank from the inside of supporting table, and cylinder and connecting tube are immersed inside water tank
In water；
S3, piston is pushed using driving device, it is achievable to flower bud shape by gradually pressurizeing to the internal pressurization of piston cylinder
The sealing performance of sealing ring is tested.
The test method uses a kind of sealing property tester of flower bud shape sealing ring, including supporting table 1, the branch
The inside of support platform 1 is fixedly installed with telescopic cylinder 12, the telescopic rod of the telescopic cylinder 12 and the bottom centre position of pallet 11
Place is fixedly connected, and the top of the pallet 11 is fixed with water tank 10, and the pallet 11 and water tank 10 are arranged at supporting table 1
Inside, the top side of the supporting table 1 are fixedly welded with L-type support 2, and the upper end inner roof wall lower part of the L-type support 2 is fixed
Piston cylinder 9 is installed, the inside of the piston cylinder 9 is equipped with piston 6, at the central upper portion position of the piston 6 with driving device 3
Output shaft be fixedly connected, the driving device 3 is fixedly mounted on the top of L-type support 2, the bottom connection of the piston cylinder 9
Equipped with connecting tube 5, the bottom inner portion of the connecting tube 5 offers card slot 17, and the bottom end of the connecting tube 5 is equipped with flange collar 18, institute
The bottom end for stating connecting tube 5 is connected with cylinder 4, and the upper end two sides of the cylinder 4 are symmetrically arranged with two fixture blocks 19, and cylinder 4 is upper
End is internal to offer the annular spacing groove 21 to match with flange collar 18, the bottom inner portion of the connecting tube 5 be symmetrically arranged with two with
The insert port 22 that fixture block 19 matches.
The top of the water tank 10 is hatch frame, and the top of water tank 10 is set on mouth structure and is convenient for 4 He of cylinder
Connecting tube 5 immerses in the water inside water tank 10.
The bottom four corners of the supporting table 1 are symmetrically arranged with four rubber supporting legs 23, which, which has, preferably subtracts
Anti-skidding effect is shaken, the stable operation of the device is conducive to.
The piston cylinder 9 is made of transparent toughened plastic material, and the outside of piston cylinder 9 is equipped with graduation mark 15, the scale
Line 15 tests each scale corresponding pressure value before setting, using pressure test device, so that in test flower bud shape sealing ring
Convenient for reading pressure value.
Fixed ear 8 is equipped with outside the upper end of the piston cylinder 9, the fixed ear 8 is fixedly mounted on L-type branch by bolt 7
The upper end inner roof wall lower part of frame 2, the fixed ear 8 is internally threaded hole, and fixed ear 8 and piston cylinder 9 are integrally formed.
The driving device 3 is cylinder, drives piston 6 conveniently to do isometric exercise by cylinder, is driven and lived by electric cylinders
Plug 6 can random regulating piston 6 move distance, cylinder or electric cylinders can be selected according to different test requirements documents.
The external side of the supporting table 1 is equipped with dismountable cover plate 14 by screw 13, by the way that dismountable cover plate is arranged
14 are convenient for later maintenance.
The table top of the supporting table 1 offers the through-hole 16 gone up and down for water tank 10, which is convenient for telescopic cylinder 12
Water tank 10 is driven to go up and down.
The upper end bottom of the fixture block 19 is equipped with inclined-plane 20, and the inclined-plane 20 has better guiding function, and is convenient for fixture block
19 closely engage with card slot 17.
Working principle: flower bud shape sealing ring when experimental test, is put into column by the sealing property tester of this flower bud shape sealing ring
Inside annular spacing groove 21 inside 4 upper end of body, and cylinder 4 is passed through into the card slot 17 that fixture block 19 is caught in 5 bottom inner portion of connecting tube
Inside simultaneously screws, and starting telescopic cylinder 12 releases water tank 10 from the inside of supporting table 1, and cylinder 4 and connecting tube 5 are immersed water tank
In water inside 10, piston 6 is pushed using driving device 3, it is achievable right by gradually pressurizeing to the internal pressurization of piston cylinder 9
The experiments of sealing performance of flower bud shape sealing ring.
Embodiment 2
A kind of experiments of sealing performance method of flower bud shape sealing ring, includes the following steps:
S1, flower bud shape sealing ring is put into inside the annular spacing groove inside cylinder upper end, and cylinder is caught in by fixture block
Inside the card slot of connecting tube bottom inner portion and screw；
S2, starting telescopic cylinder release water tank from the inside of supporting table, and cylinder and connecting tube are immersed inside water tank
In water；
S3, piston is pushed using driving device, it is achievable to flower bud shape by gradually pressurizeing to the internal pressurization of piston cylinder
The sealing performance of sealing ring is tested.
The test method uses a kind of sealing property tester of flower bud shape sealing ring, including supporting table 1, the branch
The inside of support platform 1 is fixedly installed with telescopic cylinder 12, the telescopic rod of the telescopic cylinder 12 and the bottom centre position of pallet 11
Place is fixedly connected, and the top of the pallet 11 is fixed with water tank 10, and the pallet 11 and water tank 10 are arranged at supporting table 1
Inside, the top side of the supporting table 1 are fixedly welded with L-type support 2, and the upper end inner roof wall lower part of the L-type support 2 is fixed
Piston cylinder 9 is installed, the inside of the piston cylinder 9 is equipped with piston 6, at the central upper portion position of the piston 6 with driving device 3
Output shaft be fixedly connected, the driving device 3 is fixedly mounted on the top of L-type support 2, the bottom connection of the piston cylinder 9
Equipped with connecting tube 5, the bottom inner portion of the connecting tube 5 offers card slot 17, and the bottom end of the connecting tube 5 is equipped with flange collar 18, institute
The bottom end for stating connecting tube 5 is connected with cylinder 4, and the upper end two sides of the cylinder 4 are symmetrically arranged with two fixture blocks 19, and cylinder 4 is upper
End is internal to offer the annular spacing groove 21 to match with flange collar 18, the bottom inner portion of the connecting tube 5 be symmetrically arranged with two with
The insert port 22 that fixture block 19 matches.
The top of the water tank 10 is hatch frame, and the top of water tank 10 is set on mouth structure and is convenient for 4 He of cylinder
Connecting tube 5 immerses in the water inside water tank 10.
The bottom four corners of the supporting table 1 are symmetrically arranged with four rubber supporting legs 23, which, which has, preferably subtracts
Anti-skidding effect is shaken, the stable operation of the device is conducive to.
The piston cylinder 9 is made of transparent toughened plastic material, and the outside of piston cylinder 9 is equipped with graduation mark 15, the scale
Line 15 tests each scale corresponding pressure value before setting, using pressure test device, so that in test flower bud shape sealing ring
Convenient for reading pressure value.
Fixed ear 8 is equipped with outside the upper end of the piston cylinder 9, the fixed ear 8 is fixedly mounted on L-type branch by bolt 7
The upper end inner roof wall lower part of frame 2, the fixed ear 8 is internally threaded hole, and fixed ear 8 and piston cylinder 9 are integrally formed.
The driving device 3 is cylinder, drives piston 6 conveniently to do isometric exercise by cylinder, is driven and lived by electric cylinders
Plug 6 can random regulating piston 6 move distance, cylinder or electric cylinders can be selected according to different test requirements documents.
The external side of the supporting table 1 is equipped with dismountable cover plate 14 by screw 13, by the way that dismountable cover plate is arranged
14 are convenient for later maintenance.
The table top of the supporting table 1 offers the through-hole 16 gone up and down for water tank 10, which is convenient for telescopic cylinder 12
Water tank 10 is driven to go up and down.
The upper end bottom of the fixture block 19 is equipped with inclined-plane 20, and the inclined-plane 20 has better guiding function, and is convenient for fixture block
19 closely engage with card slot 17.
In order to make the engaging of fixture block more closely with card slot, the angle α of the inclined-plane and horizontal plane is 30-45 degree.
Preferably, the angle α of the inclined-plane and horizontal plane meets:
Wherein, β is piston cylinder material coefficient, when the material of piston cylinder is cast iron, β 0.074-0.092；Work as piston cylinder
Material coefficient, when the material of piston cylinder is stainless steel, β 0.072-0.124；T by flower bud shape sealing ring from test when bear
Pressure.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of sealing performance test method of flower bud shape sealing ring, which is characterized in that the method includes the following steps:
S1, flower bud shape sealing ring is put into inside the annular spacing groove inside cylinder upper end, and cylinder is caught in connection by fixture block
Inside the card slot of pipe bottom inner portion and screw；
S2, starting telescopic cylinder release water tank from the inside of supporting table, and cylinder and connecting tube are immersed in the water inside water tank；
S3, piston is pushed using driving device, it is achievable that flower bud shape is sealed by gradually pressurizeing to the internal pressurization of piston cylinder
The sealing performance of circle is tested；
The test method uses a kind of sealing property testing equipment of flower bud shape sealing ring, and the test device includes support
The inside of platform (1), the supporting table (1) is fixedly installed with telescopic cylinder (12), the telescopic rod and support of the telescopic cylinder (12)
It is fixedly connected at the bottom centre position of disk (11), the top of the pallet (11) is fixed with water tank (10), the pallet
(11) and water tank (10) is arranged at the inside of supporting table (1), and the top side of the supporting table (1) is fixedly welded with L-type branch
The upper end inner roof wall lower part of frame (2), the L-type support (2) is fixedly installed with piston cylinder (9), and the inside of the piston cylinder (9) is set
Have piston (6), is fixedly connected at the central upper portion position of the piston (6) with the output shaft of driving device (3), the driving dress
The top that (3) are fixedly mounted on L-type support (2) is set, the bottom connection of the piston cylinder (9) is equipped with connecting tube (5), the connection
The bottom inner portion of pipe (5) offers card slot (17), and the bottom end of the connecting tube (5) is equipped with flange collar (18), the connecting tube (5)
Bottom end is connected with cylinder (4), and the upper end two sides of the cylinder (4) are symmetrically arranged with two fixture blocks (19), and in the upper end of cylinder (4)
Portion offers the annular spacing groove (21) to match with flange collar (18), and the bottom inner portion of the connecting tube (5) is symmetrically arranged with two
The insert port (22) to match with fixture block (19)；The upper end bottom of the fixture block (19) be equipped with inclined-plane (20), the inclined-plane with
The angle α of horizontal plane is 30-45 degree；
Preferably, the angle α of the inclined-plane and horizontal plane meets:
Wherein, β is piston cylinder material coefficient, when the material of piston cylinder is cast iron, β 0.074-0.092；When the material of piston cylinder
When matter is stainless steel, β 0.072-0.124；T is by flower bud shape sealing ring from the pressure born when test.
2. a kind of sealing performance test method of flower bud shape sealing ring according to claim 1, it is characterised in that: the piston
Fixed ear (8) are equipped with outside the upper end of cylinder (9), the fixed ear (8) is fixedly mounted on the upper of L-type support (2) by bolt (7)
Hold inner roof wall lower part.
3. a kind of sealing performance test method of flower bud shape sealing ring according to claim 2, it is characterised in that: the driving
Device (3) is cylinder or hydraulic cylinder.
4. a kind of sealing performance test method of flower bud shape sealing ring according to claim 2 or 3, it is characterised in that: described
The external side of supporting table (1) is equipped with dismountable cover plate (14) by screw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810240917.7A CN108507721B (en) | 2018-03-22 | 2018-03-22 | A kind of sealing performance test method of flower bud shape sealing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810240917.7A CN108507721B (en) | 2018-03-22 | 2018-03-22 | A kind of sealing performance test method of flower bud shape sealing ring |
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| CN108507721A CN108507721A (en) | 2018-09-07 |
| CN108507721B true CN108507721B (en) | 2019-11-22 |
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| CN201810240917.7A Active CN108507721B (en) | 2018-03-22 | 2018-03-22 | A kind of sealing performance test method of flower bud shape sealing ring |
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Families Citing this family (1)
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| CN109580127A (en) * | 2018-11-28 | 2019-04-05 | 杭州万顺氟胶科技有限公司 | A kind of rubber product air tightness checking device |
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|---|---|---|---|---|
| CN201944466U (en) * | 2010-12-13 | 2011-08-24 | 厦门建霖工业有限公司 | Pipe fitting connecting piece structure |
| CN102435402A (en) * | 2011-12-01 | 2012-05-02 | 西北核技术研究所 | Device for detecting leak rate of sealing ring |
| CN203083784U (en) * | 2013-02-20 | 2013-07-24 | 福州钜立机动车配件有限公司 | Hydraulically compacted-type leakage testing device |
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| CN108507721A (en) | 2018-09-07 |
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Address after: No.80, Shangcheng Road, Jinan street, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhou Zaiyun Address before: 311816 No.86, wupeng new village, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: Zhou Zaiyun |
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Effective date of registration: 20220223 Address after: 311800 Yu Cun, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: ZHUJI CHENGXIANG MACHINERY Co.,Ltd. Address before: 311800 No.80 Shangcheng Road, Jinan street, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: Zhou Zaiyun |
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Denomination of invention: A test method for sealing performance of bud seal ring Effective date of registration: 20220224 Granted publication date: 20191122 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Meichi sub branch Pledgor: ZHUJI CHENGXIANG MACHINERY Co.,Ltd. Registration number: Y2022980001794 |