CN108443605A - Gas cylinder air seal test connector - Google Patents
Gas cylinder air seal test connector Download PDFInfo
- Publication number
- CN108443605A CN108443605A CN201711013045.2A CN201711013045A CN108443605A CN 108443605 A CN108443605 A CN 108443605A CN 201711013045 A CN201711013045 A CN 201711013045A CN 108443605 A CN108443605 A CN 108443605A
- Authority
- CN
- China
- Prior art keywords
- gas cylinder
- retainer plate
- shaped rubber
- core bar
- hollow core
- 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.)
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
-
- 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
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Check Valves (AREA)
- Gasket Seals (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Gas cylinder air seal test connector, it is related to CNG gas cylinder detection device technical fields, including hollow core bar, core retainer plate, O-shaped rubber seal and connector sleeve, core retainer plate is sleeved on outside hollow core bar, hollow core bar peripheral surface is equipped with boss, the peripheral surface of core retainer plate is equipped with external screw thread, the inner wall of connector sleeve is equipped with the first internal thread for connecting gas cylinder valve and the second internal thread for connecting core retainer plate, first internal thread and the second internal thread are oppositely oriented, hollow core bar front end face is equipped with positioning counterbore, the diameter of positioning counterbore is more than the diameter in hollow core bar interior air-flow channel, O-shaped rubber seal is positioned in positioning counterbore and its radial outer abuts against the hole wall of the positioning counterbore, the line footpath of O-shaped rubber seal is more than the depth of positioning counterbore；When turn connector sleeve makes it be connect with gas cylinder valve, connector sleeve is moved with core retainer plate towards gas cylinder valve, and the front end face of core retainer plate pushes against the boss on hollow core bar, thus by O-shaped rubber seal top pressure on the interface end face of gas cylinder valve.
Description
Technical field
The present invention relates to CNG gas cylinder detection device technical fields, more particularly to a kind of gas cylinder air seal test connector.
Background technology
CNG gas cylinders need that the air pressure of 20MPa will be filled in bottle in airtight test, and air source passes through connector with gas cylinder valve
It is connected, connector there must be very reliable sealing performance.
Traditional air seal test joint structure is referring to Fig. 1 comprising 1, combination sealing washer 2 of a collar nut and
A piece hollow core bar 3.Combination sealing washer 2 includes the rubber ring 2a being integrally bonded together and becket 2b.It is set on core bar 3
Set the flange 3a for pushing down combination sealing washer 2.The screw hole of collar nut 1 is stepped hole, and flange 3a can be pushed down to be formed
Step 1a.Fig. 1 shows the air seal test connector is how to be connect with gas cylinder valve, in Fig. 1, combination sealing washer 2
It is sleeved on core bar 3, after which connect by turn collar nut 1 with gas cylinder valve, the step 1a in screw hole is pushed down
Flange 3a, and flange 3a tightly pushes down combination sealing washer 2 on the interface end face of valve, to realization and gas cylinder valve
Sealed connection.
Although the air seal test connector of above structure can meet plant produced demand substantially, it is in long-term production application
There is also following defects in the process：1, it is to avoid gas leakage, between combination sealing washer 2 and the end faces flange 3a and combination sealing pad
Should reliably be sealed between circle 2 and valve interface end face, due to be related to two contact surfaces sealing and test process in bottle
Pressure is up to 20MPa, it is necessary to impose severe pressure, therefore tighten and dismounting joint spiral shell in 2 both ends of the surface of combination sealing washer
It is required to operate by spanner when mother 1.2, during flange 3a and valve interface end face squeeze combination sealing washer 2,
Rubber ring 2a Impact directions in combination sealing washer 2 are as shown in Figure 2, and such stress is easy to squeeze on the tops rubber ring 2a
Enter in the gap 4 between core bar 3 and valve interface end face, although combination sealing washer 2 can also realize sealing at this time, its structure
Actually " gnawed and cut " it is bad, next time connection gas cylinder valve when can not just ensure sealing performance again.3, after being used for multiple times, due to by
The effect of very big extruding force, the becket 2b in combination sealing washer 2 generate plastic deformation, at this moment need the screwing force of bigger
It can realize sealing, meanwhile, becket 2b can also lead to entire combination sealing washer 2 to a certain extent after generating plastic deformation
Sealing performance reduces.
Invention content
The high pressure that the technical problem to be solved in the present invention is to provide a kind of dismounting easily, convenient and long term seal works well
Gas cylinder air seal test connector.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of gas cylinder air seal test connector,
Including hollow core bar, core retainer plate, O-shaped rubber seal and connector sleeve, the core retainer plate is sleeved on outside hollow core bar and can be along its axial direction
It is moved forward and backward, the hollow core bar peripheral surface is equipped with boss, and the core retainer plate can be moved along and its front end face is made to abut against this
Boss, the peripheral surface of the core retainer plate are equipped with external screw thread, and the inner wall of the connector sleeve is equipped with for connecting gas cylinder valve
One internal thread and the second internal thread for connecting core retainer plate, first internal thread and the second internal thread are oppositely oriented, institute
The front end face for stating hollow core bar is equipped with positioning counterbore, and the diameter of the positioning counterbore is more than the straight of hollow core bar interior air-flow channel
Diameter, the O-shaped rubber seal is positioned in positioning counterbore and its radial outer abuts against the hole wall of the positioning counterbore, the O
The line footpath of type rubber seal is more than the depth of positioning counterbore；
When connector sleeve described in turn makes it be connect with gas cylinder valve, the connector sleeve is moved with core retainer plate towards gas cylinder valve, described
The front end face of core retainer plate pushes against the boss on hollow core bar, and the hollow core bar is by O-shaped rubber seal top pressure in gas cylinder valve
On interface end face.
Wherein, the hollow core bar includes path section and major diameter section, and the outer diameter of the major diameter section is more than the outer diameter of path section,
The major diameter section is connected to path section front end, and to form boss on the hollow core bar peripheral surface, the core retainer plate is sleeved on small
Outside diameter section, the connector sleeve includes leading portion, stage casing and back segment, and the internal diameter of the leading portion is less than the internal diameter in stage casing, the stage casing
Internal diameter be less than the internal diameter of back segment, first internal thread is set on the inner wall of leading portion, and second internal thread is set to back segment
On inner wall, the internal diameter of the leading portion is less than the outer diameter of major diameter section, and the internal diameter in the back segment and stage casing is all higher than the outer diameter of major diameter section.
Wherein, the stage casing of the connector sleeve is sleeved on outside the major diameter section of hollow core bar, between the stage casing and major diameter section
Unilateral gap is 0.05mm -0.2mm.
Preferably, the core retainer plate further includes the stop nut positioned at its rear end, and the size of the stop nut is more than connection
Cover back segment internal diameter, the hollow core bar by O-shaped rubber seal top pressure when on the interface end face of gas cylinder valve, the limit
The front end of nut abuts against the rear end face of connector sleeve.
Further, the peripheral surface annular knurl of the connector sleeve is processed to form anti-skid chequer.
Preferably, the internal diameter of the O-shaped rubber seal is less than the port inner diameter of gas cylinder valve air admission hole.
Further, the relationship between the O-shaped rubber seal internal diameter and the port inner diameter of gas cylinder valve air admission hole is：
；
In above formula, the d1For the port inner diameter of gas cylinder valve air admission hole, the d2For the internal diameter of O-shaped rubber seal, the d3
For the line footpath of O-shaped rubber seal.
Gas cylinder air seal test connector provided by the invention uses the completely new knot different from traditional air seal test connector
Structure, for the present invention by the way that positioning counterbore is arranged in hollow core bar front end and O-shaped rubber seal is arranged in positioning counterbore, this is airtight
After test joint is connect with high-pressure gas cylinder valve, hollow core bar is by O-shaped rubber seal top pressure in the interface end face of gas cylinder valve
On, due to the positioning of O-shaped rubber seal is placed on counterbore and in non-groove, that is to say, that on the inside of O-shaped rubber seal relative to
Air source direction is wide-open, and under gas pressure effect, O-shaped rubber seal generates radially enlarged trend, but due to
Its radial outer just abuts against the hole wall of positioning counterbore originally, and O-shaped rubber seal radial direction outer can not become larger again, but more
Abut against the hole wall of positioning counterbore with stepping up, at this moment under the collective effect of gas pressure and positioning counterbore hole wall reaction force, O
Type rubber seal deforms upon, cross section become to be similar to by original circle it is rectangular, to gas cylinder valve interface
Sealing is formed between end face, positioning counterbore hole wall and positioning counterbore hole bottom surface, gas pressure is bigger, O-shaped rubber seal and gas
Bottle valve interface end face, positioning counterbore hole wall and positioning counterbore hole bottom surface are tighter against obtaining, and utilize air source itself to press to realize
Power is applied to O-shaped rubber seal and is sealed.
More importantly it is, since the present invention realizes sealing by air source pressure itself, to need pre- to be added in O-shaped rubber seal
Clamping force on circle is much smaller compared to combination sealing washer, in actual use, only slightly tightens connector sleeve with hand, and nothing
Connector sleeve need to be screwed by spanner to allow hollow core bar firmly to push down combination sealing washer, therefore the airtight experiment connector dismounting is more
Easily, conveniently, worker's working efficiency higher.
What is particularly worth mentioning is that the present invention is not in during connection cover locking, O-shaped rubber seal " being gnawed bad "
And becket generates the case where plastic deformation, to the powerful guarantee long term seal effect of air seal test connector and uses the longevity
Life.
In addition, in gas cylinder air seal test connector provided by the invention, core retainer plate not only be used to push against hollow core bar,
Make O-shaped rubber seal by top pressure on the interface end face of gas cylinder valve, and since the first internal thread and the second internal thread revolve
To opposite, that is to say, that the external screw thread on core retainer plate peripheral surface and the external screw thread on gas cylinder valve connector are oppositely oriented, thus,
Above-mentioned core retainer plate can also play the role of preventing from loosening between connector sleeve and gas cylinder valve connector to a certain extent.
Description of the drawings
Fig. 1 is the overall structure diagram of conventional high-tension gas cylinder air seal test connector；
Fig. 2 is the partial enlarged view at the positions I in Fig. 1；
Fig. 3 is the overall structure diagram of mesohigh gas cylinder air seal test connector of the present invention；
Fig. 4 is the structural schematic diagram of connector sleeve in gas cylinder air seal test connector shown in Fig. 3；
Fig. 5 is the structural schematic diagram of core retainer plate in gas cylinder air seal test connector shown in Fig. 3；
Fig. 6 is the structural schematic diagram of hollow core bar in gas cylinder air seal test connector shown in Fig. 3；
Fig. 7 is the partial enlarged view at the positions I in Fig. 3；
In figure：
1 --- attaching nut 2 --- combination sealing washer 3 --- core bar
4 --- gap 2a --- rubber ring 2b --- beckets
3a --- flange 5 --- hollow core bar 6 --- core retainer plates
7 --- O-shaped rubber seal 8 --- connector sleeve 5a --- boss
5b --- positioning counterbore 5c --- path section 5d --- major diameter sections
6a --- stop nut 8a --- the first internal thread 8b --- second internal threads
8c --- leading portion 8d --- stage casing 8e --- back segments.
Specific implementation mode
Need to illustrate in advance, in the description of the present invention, term "upper", "lower", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside", "front", "rear" is that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation "
Equal terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be
It is connected directly, it can also be indirectly connected through an intermediary.It for the ordinary skill in the art, can be according to specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
For the ease of those skilled in the art understand that the improvements of the present invention compared with the existing technology, with reference to implementation
Example and attached drawing are next, and the present invention is further illustrated.
Fig. 3-7 shows a kind of gas cylinder air seal test connector comprising hollow core bar 5, core retainer plate 6, O-shaped rubber seal
Circle 7 and connector sleeve 8, core retainer plate 6 are sleeved on 5 outside of hollow core bar and can axially back and forth be moved along it, and 5 peripheral surface of hollow core bar is equipped with
Boss 5a, core retainer plate 6 can be moved along and its front end face made to abut against boss 5a, and the peripheral surface of core retainer plate 6 is equipped with external screw thread, even
The inner wall of female connector 8 is equipped with spiral shell in the first internal thread 8a for connecting gas cylinder valve and second for connecting core retainer plate 6
Line 8b, the first internal thread 8a and the second internal thread 8b is oppositely oriented, and the front end face of hollow core bar 5 is equipped with positioning counterbore 5b, positioning
The diameter of counterbore 5b be more than 5 interior air-flow channel of hollow core bar diameter, O-shaped rubber seal 7 be positioned in positioning counterbore 5b and
Its radial outer abuts against the hole wall of positioning counterbore 5b, and the line footpath of O-shaped rubber seal 7 is more than the depth of positioning counterbore 5b；
When turn connector sleeve 8 makes it be connect with gas cylinder valve, connector sleeve 8 is moved with core retainer plate 6 towards gas cylinder valve, before core retainer plate 6
End face pushes against the boss 5a on hollow core bar 5 so that hollow core bar 5 by 7 top pressure of O-shaped rubber seal gas cylinder valve interface
On end face.
Above-described embodiment is by being arranged positioning counterbore 5b in 5 front end of hollow core bar and O-shaped rubber being arranged in positioning counterbore 5b
Glue sealing ring 7, after which connect with high-pressure gas cylinder valve, hollow core bar 5 exists 7 top pressure of O-shaped rubber seal
On the interface end face of gas cylinder valve, due to O-shaped rubber seal 7 positioning be placed on counterbore and in non-groove, that is to say, that O-shaped rubber
7 inside of glue sealing ring is wide-open relative to air source direction, and under gas pressure effect, O-shaped rubber seal 7 generates diameter
To the trend to swell, but since its radial outer just abuts against the hole wall of positioning counterbore 5b originally, O-shaped rubber seal 7 is radial
Outer can not become larger again, but more tightly abut against the hole wall of positioning counterbore 5b, at this moment in gas pressure and positioning counterbore 5b
Under the collective effect of hole wall reaction force, O-shaped rubber seal 7 deforms upon, and cross section becomes approximate by original circle
In rectangular, to form sealing between gas cylinder valve interface end face, positioning counterbore 5b hole walls and the holes positioning counterbore 5b bottom surface,
Gas pressure is bigger, O-shaped rubber seal 7 and gas cylinder valve interface end face, positioning counterbore 5b hole walls and positioning counterbore 5b bottom holes
Face is tighter against obtaining, to realize that being applied to O-shaped rubber seal 7 using air source pressure itself is sealed.
More importantly it is, since the present invention realizes sealing by air source pressure itself, to need pre- to be added in O-shaped rubber seal
Clamping force on circle 7 is much smaller compared to combination sealing washer 2, in actual use, connector sleeve 8 is only slightly tightened with hand,
Core bar 3 is allowed firmly to push down combination sealing washer 2 without screwing connector sleeve 8 by spanner, therefore the airtight experiment connector dismounts
More easily, conveniently, worker's working efficiency higher.
What is particularly worth mentioning is that above-described embodiment does not appear in during the locking of connector sleeve 8, O-shaped rubber seal 7
The case where " being gnawed bad " and becket 2b generate plastic deformation, to the powerful guarantee long term seal effect of air seal test connector
And service life.
In addition, in the gas cylinder air seal test connector that above-described embodiment provides, core retainer plate 6 not only be used to push against hollow
Core bar 5 makes O-shaped rubber seal 7 by top pressure on the interface end face of gas cylinder valve, and due to the first internal thread 8a and second
Internal thread 8b is oppositely oriented, that is to say, that the external screw thread on 6 peripheral surface of core retainer plate and the external screw thread rotation direction phase on gas cylinder valve connector
Instead, thus, which the core retainer plate 6 can also play to a certain extent prevents from loosening between connector sleeve 8 and gas cylinder valve connector
Effect.
Specifically, in the above-described embodiments, hollow core bar 5 includes path section 5c and major diameter section 5d, and major diameter section 5d's is outer
Diameter is more than the outer diameter of path section 5c, and major diameter section 5d is connected to the front ends path section 5c, convex to be formed on 5 peripheral surface of hollow core bar
Platform 5a, core retainer plate 6 are sleeved on outside path section 5c, and connector sleeve 8 includes leading portion 8c, stage casing 8d and back segment 8e, and the internal diameter of leading portion 8c is less than
The internal diameter of stage casing 8d, the internal diameter of stage casing 8d are less than the internal diameter of back segment 8e, and the first internal thread 8a is on the inner wall of leading portion 8c, and second
For internal thread 8b on the inner wall of back segment 8e, the internal diameter of leading portion 8c is less than the outer diameter of major diameter section 5d, and back segment 8e and stage casing 8d's is interior
Diameter is all higher than the outer diameter of major diameter section 5d.Further, the stage casing 8d of connector sleeve 8 is sleeved on outside the major diameter section 5d of hollow core bar 5, in
Unilateral gap between section 8d and major diameter section 5d is 0.05mm-0.2mm.Herein, stage casing 8d can be played to before major diameter section 5d
The effect being oriented to is moved afterwards, to avoid causing O-shaped rubber seal 7 a certain because major diameter section 5d radial offset is excessive
The case where section/does not abut against gas cylinder valve interface end face so that air seal test connector and the sealing of gas cylinder valve junction are imitated
Fruit is more stable, reliable.
Preferably, above-mentioned core retainer plate 6 further includes the stop nut 6a positioned at its rear end, and the size of stop nut 6a is more than connection
7 top pressure of O-shaped rubber seal when on the interface end face of gas cylinder valve, is limited spiral shell by the back segment 8e internal diameters of set 8, hollow core bar 5
The front end of female 6a abuts against the rear end face of connector sleeve 8.In addition, being also formed with by annular knurl processing on the peripheral surface of connector sleeve 8
Anti-skid chequer.
It is also preferred that the internal diameter of said o rubber seal 7 is less than the internal diameter of gas cylinder valve air inlet.Specifically,
Relationship between 7 internal diameter of O-shaped rubber seal and gas cylinder valve air inlet internal diameter is：
；
In above formula, d1For the internal diameter of gas cylinder valve air inlet, d2For the internal diameter of O-shaped rubber seal 7, d3For O-shaped rubber seal
The line footpath of circle 7.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other manner,
Do not depart from the technical program design under the premise of it is any it is obvious replacement within protection scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, those of ordinary skill in the art should be aware that the element that these are omitted also may make up present disclosure.
Claims (7)
1. gas cylinder air seal test connector, including hollow core bar（5）, it is characterised in that：It further include core retainer plate（6）, O-shaped rubber it is close
Seal（7）And connector sleeve（8）, the core retainer plate（6）It is sleeved on hollow core bar（5）Outside simultaneously can axially back and forth be moved along it, in described
Hollow bar（5）Peripheral surface is equipped with boss（5a）, the core retainer plate（6）It can be moved along and its front end face is made to abut against the boss
（5a）, the core retainer plate（6）Peripheral surface be equipped with external screw thread, the connector sleeve（8）Inner wall be equipped with for connecting bottle valve
First internal thread of door（8a）And for connecting core retainer plate（6）The second internal thread（8b）, first internal thread（8a）With
Second internal thread（8b）It is oppositely oriented, the hollow core bar（5）Front end face be equipped with positioning counterbore（5b）, the positioning counterbore
（5b）Diameter be more than hollow core bar（5）The diameter in interior air-flow channel, the O-shaped rubber seal（7）It is positioned over positioning counterbore
（5b）In and its radial outer abut against the positioning counterbore（5b）Hole wall, the O-shaped rubber seal（7）Line footpath be more than it is fixed
Position counterbore（5b）Depth；
Connector sleeve described in turn（8）When it being made to be connect with gas cylinder valve, the connector sleeve（8）With core retainer plate（6）Towards gas cylinder valve
It is mobile, the core retainer plate（6）Front end face push against hollow core bar（5）On boss（5a）, the hollow core bar（5）By O-shaped rubber
Sealing ring（7）Top pressure is on the interface end face of gas cylinder valve.
2. gas cylinder air seal test connector according to claim 1, it is characterised in that：The hollow core bar（5）Including
Path section（5c）With major diameter section（5d）, the major diameter section（5d）Outer diameter be more than path section（5c）Outer diameter, the major diameter section
（5d）It is connected to path section（5c）Front end, in the hollow core bar（5）Boss is formed on peripheral surface（5a）, the core retainer plate
（6）It is sleeved on path section（5c）Outside, the connector sleeve（8）Including leading portion（8c）, stage casing（8d）And back segment（8e）, the leading portion
（8c）Internal diameter be less than stage casing（8d）Internal diameter, the stage casing（8d）Internal diameter be less than back segment（8e）Internal diameter, in described first
Screw thread（8a）Set on leading portion（8c）Inner wall on, second internal thread（8b）Set on back segment（8e）Inner wall on, the leading portion
（8c）Internal diameter be less than major diameter section（5d）Outer diameter, the back segment（8e）And stage casing（8d）Internal diameter be all higher than major diameter section（5d）'s
Outer diameter.
3. gas cylinder air seal test connector according to claim 2, it is characterised in that：The connector sleeve（8）Stage casing
（8d）It is sleeved on hollow core bar（5）Major diameter section（5d）Outside, the stage casing（8d）With major diameter section（5d）Between unilateral gap be
0.05mm -0.2mm。
4. gas cylinder air seal test connector according to claim 2 or 3, it is characterised in that：The core retainer plate（6）Further include
Stop nut positioned at its rear end（6a）, the stop nut（6a）Size be more than connector sleeve（8）Back segment（8e）Internal diameter, institute
State hollow core bar（5）By O-shaped rubber seal（7）Top pressure is when on the interface end face of gas cylinder valve, the stop nut（6a）
Front end abut against connector sleeve（8）Rear end face.
5. gas cylinder air seal test connector according to claim 4, it is characterised in that：The connector sleeve（8）Periphery
Face annular knurl is processed to form anti-skid chequer.
6. gas cylinder air seal test connector according to claim 1, it is characterised in that：The O-shaped rubber seal（7）
Internal diameter be less than gas cylinder valve air inlet internal diameter.
7. gas cylinder air seal test connector according to claim 6, which is characterized in that the O-shaped rubber seal（7）
Relationship between internal diameter and gas cylinder valve air inlet internal diameter is：
；
In above formula, the d1For the internal diameter of gas cylinder valve air inlet, the d2For O-shaped rubber seal（7）Internal diameter, the d3
For O-shaped rubber seal（7）Line footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711013045.2A CN108443605A (en) | 2017-10-26 | 2017-10-26 | Gas cylinder air seal test connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711013045.2A CN108443605A (en) | 2017-10-26 | 2017-10-26 | Gas cylinder air seal test connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443605A true CN108443605A (en) | 2018-08-24 |
Family
ID=63190903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711013045.2A Pending CN108443605A (en) | 2017-10-26 | 2017-10-26 | Gas cylinder air seal test connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443605A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238989A (en) * | 2020-02-25 | 2020-06-05 | 西南石油大学 | Gravimetric method high temperature high pressure isothermal adsorption measuring device |
| CN114018509A (en) * | 2021-09-26 | 2022-02-08 | 厦门双瑞风电科技有限公司 | Assembled hydraulic bursting test joint for high-pressure hydrogen storage cylinder |
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| CN2169759Y (en) * | 1993-07-07 | 1994-06-22 | 戴志海 | Pipe high pressure seal joint |
| CN201875311U (en) * | 2010-10-28 | 2011-06-22 | 无锡宝南机器制造有限公司 | Seal joint in hydraulic system |
| US20150308593A1 (en) * | 2014-04-25 | 2015-10-29 | Kohler Co. | Plumbing fitting adapter |
| CN205447026U (en) * | 2016-03-24 | 2016-08-10 | 四川嘉科能源装备工程有限公司 | High pressure screwed joint |
| CN205504251U (en) * | 2016-04-11 | 2016-08-24 | 成都璨宇科技有限公司 | Pressurization connects |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238989A (en) * | 2020-02-25 | 2020-06-05 | 西南石油大学 | Gravimetric method high temperature high pressure isothermal adsorption measuring device |
| CN114018509A (en) * | 2021-09-26 | 2022-02-08 | 厦门双瑞风电科技有限公司 | Assembled hydraulic bursting test joint for high-pressure hydrogen storage cylinder |
| CN114018509B (en) * | 2021-09-26 | 2024-04-05 | 厦门双瑞风电科技有限公司 | Assembled hydraulic bursting test joint for high-pressure hydrogen storage cylinder |
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Application publication date: 20180824 |
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