CN208537113U - Sealing mechanism and vacuum box type helium detect test system - Google Patents
Sealing mechanism and vacuum box type helium detect test system Download PDFInfo
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- CN208537113U CN208537113U CN201821142705.7U CN201821142705U CN208537113U CN 208537113 U CN208537113 U CN 208537113U CN 201821142705 U CN201821142705 U CN 201821142705U CN 208537113 U CN208537113 U CN 208537113U
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Abstract
The utility model relates to a kind of sealing mechanisms, including inner shaft, annulus, outer sleeve, fixed plate and push plate；The inner shaft first end is connected with the push plate；The inner shaft second end includes spindle nose, the spindle nose far from the first end diameter be less than close to the first end while diameter；The outer sleeve is connected with the fixed plate, and the outer sleeve is sheathed in the inner shaft；The annulus can be slidably sheathed in the inner shaft, and the annulus diameter is identical as the diameter for the one side that the spindle nose is relatively large in diameter.Above-mentioned sealing mechanism makes workpiece in test by the outer sleeve and annulus that moveable inner shaft are arranged with are set in inner shaft, makes sealing ring swell by squeezing, sealing ring and nozzle inner wall are interference fitted, achieve the effect that sealing, avoids the abrasion of sealing ring, ensure that sealing effect.The invention also discloses a kind of vacuum box type helium to detect test system.
Description
Technical field
The utility model relates to vacuum helium to examine technical field, detect more particularly to a kind of sealing mechanism and vacuum box type helium
Test system.
Background technique
Four-way valve, hydraulic valve term are that there are four the control valves of hydraulic fluid port for tool.Four-way valve is indispensable in refrigeration equipment
Component, its working principle is that, when electromagnetic valve coil is in off-position, pilot slide valve moves to left under the driving of right side compressed spring,
High pressure gas enters right end plunger shaft after entering capillary, on the other hand, the gas discharge of left end plunger shaft, due to piston both ends
There are pressure difference, piston and main slide valve are moved to left, and are taken over exhaust pipe with outdoor unit and are communicated, and another two piece-root graftings pipe communicates, and are formed refrigeration and are followed
Ring.
Four-way valve is very high to seal request, therefore dispatches from the factory or using carrying out helium inspection leak detection as previous, most common
Leak hunting method is the detection examination of vacuum box type helium, i.e., the helium of certain pressure intensity, examined workpiece outside are filled with after evacuating to examined workpiece
It is the vacuum tank with certain vacuum degree requirement, vacuum tank connects with helium mass spectrometer leak detector leak detection mouth.If examined workpiece has leakage,
The helium for leaking into vacuum tank can be measured by helium mass spectrometer leak detector.What is be connected with examined workpiece is helium filling recyclable device,
The filling and recycling of helium are realized respectively in leak detection front and back.
At present when carrying out the detection examination of vacuum box type helium to four-way valve, helium fills close between recyclable device and four-way valve
The sealing ring of sealing mechanism is interference fitted always in clamping workpiece, test, disassembly with the nozzle inner wall of four-way valve, is easy to make to seal
Circle abrasion, sealing ring and nozzle inner wall poor sealing, cause equipment to report micro- leakage by mistake when causing to fill helium test.
Utility model content
Based on this, it is necessary to for when carrying out the detection examination of vacuum box type helium to four-way valve, helium fills recycling dress at present
Set the sealing ring of the sealing mechanism between four-way valve in clamping workpiece, test, disassembly and the nozzle inner wall of four-way valve always
Interference fit, is easy to make ring wear, and sealing ring and nozzle inner wall poor sealing, cause equipment to report by mistake when causing to fill helium test
The problem of micro- leakage, provides a kind of sealing mechanism and vacuum box type helium detection test system.
A kind of sealing mechanism, including inner shaft, annulus, outer sleeve, fixed plate and push plate；
The inner shaft first end is connected with the push plate, and the push plate can be described interior along the axial translation of the inner shaft
Axis follows the push plate mobile；
The inner shaft second end includes spindle nose, and the spindle nose is less than far from the diameter of the first end one side close to described the
The diameter of one end one side；
The outer sleeve is connected with the fixed plate, and the fixed plate is fixed, and the outer sleeve is sheathed in described
On axis, diameter of the outer sleeve close to one end of the spindle nose is identical as the diameter for the one side that the spindle nose is relatively large in diameter；
The annulus can be slidably sheathed in the inner shaft, the annulus diameter and the spindle nose diameter
The diameter of biggish one side is identical.
It is identical to remove shaft head exceptionally each section diameter for the inner shaft in one of the embodiments,.
The quantity of the inner shaft, annulus and outer sleeve is identical in one of the embodiments,.
The sealing mechanism includes 4 inner shafts, 4 annulus and 4 outer sleeves in one of the embodiments,.
The first groove, the annular sleeve are formed between the spindle nose and the annulus in one of the embodiments,
The second groove, first groove and the second groove are formed between cylinder and the outer sleeve for installing sealing ring.
Clearance fit between the outer sleeve and the fixed plate in one of the embodiments,.
The distance between the spindle nose and the annulus and the annulus and institute in one of the embodiments,
It is identical to state the distance between outer sleeve.
The sealing mechanism further includes rack in one of the embodiments, and the push plate and the fixed plate are mounted on
In the rack.
It in one of the embodiments, further include connecting rod, the push plate is connected by the connecting rod with the rack,
The push plate can be along the axial translation of the connecting rod.
A kind of vacuum box type helium detection test system, the vacuum box type helium detection test system is using sealing mechanism to tested work
The junction of part and helium filling recyclable device is sealed, and the sealing mechanism uses above-mentioned sealing mechanism.
Above-mentioned sealing mechanism and vacuum box type helium detection test system are by being arranged moveable inner shaft and being set in inner shaft
Outer sleeve and annulus, when making clamping workpiece, disassembly, sealing ring and nozzle inner wall clearance fit, nozzle inner wall and sealing
Circle is not directly contacted with, and workpiece makes sealing ring swell in test, by squeezing, and sealing ring and nozzle inner wall are interference fitted, and is reached
The effect of sealing avoids the abrasion of sealing ring, ensure that sealing effect.
Detailed description of the invention
Fig. 1 is the main view of the sealing mechanism of the embodiments of the present invention；
Fig. 2 is the top view of the sealing mechanism of the embodiments of the present invention.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that it can be directly on another component when component is referred to as " being installed in " another component
Or there may also be components placed in the middle.When a component is considered as " being set to " another component, it, which can be, is directly set
Set on another component or may be simultaneously present component placed in the middle.When a component is considered as " being fixed on " another group
Part, it, which can be, is directly anchored on another component or may be simultaneously present component placed in the middle.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
Any and all combinations of one or more related listed items.
It is the main view of the sealing mechanism of the embodiments of the present invention also referring to Fig. 1 and Fig. 2, Fig. 1, Fig. 2 is this
The top view of the sealing mechanism of the embodiment of utility model.In the present embodiment, the sealing mechanism carries out true for four-way valve
To the sealing between four-way valve and helium filling recyclable device when the detection examination of empty van formula helium.It is appreciated that the sealing mechanism is also
It can be used in other helium inspection test device except the detection examination of vacuum box type helium.
In the present embodiment, the sealing mechanism includes inner shaft 12, annulus 13, outer sleeve 14, fixed plate 11 and pushes away
Plate 10.
Specifically, the inner shaft 12 includes first end 121 and second end 122, the first end 121 and 10 phase of push plate
Even, the push plate 10 can push the axial translation of inner shaft 12 described in lower edge in external force, and the inner shaft 12 follows the push plate 10
Along the axial movement of the inner shaft 12.
The second end 122 includes spindle nose 1221, and in the present embodiment, the spindle nose 1221 is far from the first end 121
Diameter be less than close to the first end 121 while diameter.In the present embodiment, the spindle nose 1221 is rotary table.?
In other embodiments, the spindle nose 1221 can be other shapes, only need to meet the spindle nose 1221 far from the first end 121
Diameter be less than close to the first end 121 while diameter requirement.
Preferably, the inner shaft 12 each section diameter in addition to 1221 part of spindle nose is identical.In other embodiments, in described
12 each section diameter of axis can be different, need to only match with the adapter tube for the workpiece for carrying out helium inspection.
Specifically, the outer sleeve 14 is connected with the fixed plate 11, and the fixed plate 11 is fixed, the outer sleeve
14 are sheathed in the inner shaft 12, and diameter and the spindle nose 1221 of the outer sleeve 14 close to one end of the spindle nose 1221 are straight
The diameter of the biggish one side of diameter is identical, and the outer sleeve 14 is fixed in the fixed plate 11, not with the movement of the inner shaft 12
And it moves.
In the present embodiment, the annulus 13 is sheathed in the inner shaft 12,13 diameter of annulus and institute
The diameter for stating the one side that spindle nose 1221 is relatively large in diameter is identical, and the annulus 13 can slide in the inner shaft 12.
In the present embodiment, the inner shaft 12, outer sleeve 14 and annulus 13 are multiple, each inner shaft 12, housing
Cylinder 14 and the corresponding adapter tube with the workpiece for carrying out helium inspection of annulus 13 match.Preferably, the inner shaft 12,14 and of outer sleeve
Annulus 13 is 4, applied to the scene for carrying out helium inspection to four-way valve.In other embodiments, when the work for carrying out helium inspection
When part is other workpiece, the quantity of the inner shaft 12, outer sleeve 14 and annulus 13 can be adjusted accordingly.
In the present embodiment, the sealing mechanism further includes rack 15, and the push plate 10 and the fixed plate 11 are mounted on
In the rack 15.Specifically, the push plate 10 is connected by connecting rod 16 with the rack 15, and the push plate 10 can be along institute
State the axial translation of connecting rod 16.
The first groove, institute are formed between 1221 one end of spindle nose of the inner shaft 12 of above-mentioned sealing mechanism and the annulus 13
It states and forms the second groove between annulus 13 and the outer sleeve 14, the first sealing ring 17, institute are placed in first groove
It states and places the second sealing ring 18 in the second groove, when normal condition, the diameter of first sealing ring 17 and the second sealing ring 18
Less than the diameter of the annulus 13, it is big that the size of first sealing ring 17 and the second sealing ring 18 is less than the groove
It is small.When the adapter tube of the sealing mechanism and examined workpiece carries out clamping and disassembly, first sealing ring 17 and the second sealing
Circle 18 keeps normal condition, and diameter is less than the diameter of the annulus 13, therefore first sealing ring 17 and the second sealing
Circle 18 is not contacted with the nozzle inner wall；When the workpiece starts helium detection examination, apply one far from institute to the push plate 10
State the motive force in 122 direction of second end, the push plate 10 is mobile to the direction far from the second end 122, the inner shaft 12 with
Mobile to the direction far from the second end 122 with the push plate 10, the spindle nose 1221 applies to first sealing ring 17
Pressure, first sealing ring 17 apply pressure to the annulus 13, and the annulus 13 is under pressure to remote
Direction from the second end 122 is mobile, while the annulus 13 compresses second sealing ring 18 in moving process,
It is squeezed second sealing ring 18, deforms swell.The annulus is compressing second sealing ring 18 simultaneously
Reaction force by second sealing ring 18 in the process, the annulus moving distance be less than the inner shaft movement away from
From first groove distance becomes smaller, and first sealing ring 17 is squeezed, and deforms swell.Second end 122 works as described first
Sealing ring 17 and the second sealing ring 18 deformation swell arrive the degree for reaching sealing effect just when, stop to the push plate 10 application
Motive force, at this point, the adapter tube of the sealing mechanism and examined workpiece is tightly connected.
Above-mentioned sealing mechanism passes through the outer sleeve 14 and annular sleeve that moveable inner shaft 12 is arranged and is set in inner shaft 12
Cylinder 13, when making clamping workpiece, disassembly, sealing ring and nozzle inner wall clearance fit, nozzle inner wall are not directly contacted with sealing ring, work
Part makes sealing ring swell in test, by squeezing, and sealing ring and nozzle inner wall are interference fitted, and achievees the effect that sealing, avoids
The abrasion of sealing ring, ensure that sealing effect.The leakproofness of helium checking device Yu examined workpiece junction is also enhanced simultaneously, is dropped
The micro- leak rate of wrong report of the box helium mass spectrum leak detection equipment of low vacuum, the testing efficiency of lifting means.The outer sleeve 14 is outer simultaneously
The round inner hole with fixed plate 11 is clearance fit, so that outer sleeve 14, inner shaft 12 can float, it can by the floating of each inner shaft 12
To adjust the distance between inner shaft 12, even if also can in the case where the axial line distance tolerance that examined workpiece is respectively taken over is excessive
Guarantee that outer sleeve 14, annulus 13, the axis that the axis of inner shaft 12 is taken over examined workpiece are completely coincident, avoids sealing ring
With the single edge contact of nozzle inner wall so that the sealing effect of the sealing mechanism is with good stability.
The invention also discloses a kind of vacuum box type helium to detect test system (not shown), the vacuum box type helium detection
Test system is sealed using junction of the sealing mechanism to examined workpiece and helium filling recyclable device, and the sealing mechanism is adopted
With above-mentioned sealing mechanism, the abrasion of sealing ring is avoided, ensure that sealing effect, to make the vacuum box type helium detection examination system
The effect of the helium detection examination of system is more preferable.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of sealing mechanism, which is characterized in that including inner shaft, annulus, outer sleeve, fixed plate and push plate；
The inner shaft first end is connected with the push plate, the push plate can along the axial translation of the inner shaft, the inner shaft with
It is mobile with the push plate；
The inner shaft second end includes spindle nose, and the spindle nose is less than far from the diameter of the first end one side close to the first end
Diameter on one side；
The outer sleeve is connected with the fixed plate, and the fixed plate is fixed, and the outer sleeve is sheathed in the inner shaft,
Diameter of the outer sleeve close to one end of the spindle nose is identical as the diameter for the one side that the spindle nose is relatively large in diameter；
The annulus can be slidably sheathed in the inner shaft, and the annulus diameter is relatively large in diameter with the spindle nose
One side diameter it is identical.
2. sealing mechanism according to claim 1, which is characterized in that the inner shaft removes shaft head exceptionally each section diameter phase
Together.
3. sealing mechanism according to claim 1, which is characterized in that the quantity of the inner shaft, annulus and outer sleeve
It is identical.
4. sealing mechanism according to claim 3, which is characterized in that the sealing mechanism includes 4 inner shafts, 4 annulars
Sleeve and 4 outer sleeves.
5. sealing mechanism according to claim 1, which is characterized in that form between the spindle nose and the annulus
One groove forms the second groove, first groove and the second groove for pacifying between the annulus and the outer sleeve
Fill sealing ring.
6. sealing mechanism according to claim 1, which is characterized in that gap is matched between the outer sleeve and the fixed plate
It closes.
7. sealing mechanism according to claim 1, which is characterized in that the distance between the spindle nose and the annulus
It is identical as the distance between the outer sleeve with the annulus.
8. sealing mechanism according to claim 1, which is characterized in that the sealing mechanism further includes rack, the push plate
It is mounted on the rack with the fixed plate.
9. sealing mechanism according to claim 8, which is characterized in that further include connecting rod, the push plate passes through the company
Extension bar is connected with the rack, and the push plate can be along the axial translation of the connecting rod.
10. a kind of vacuum box type helium detects test system, the vacuum box type helium detection test system is using sealing mechanism to tested work
The junction of part and helium filling recyclable device is sealed, which is characterized in that the sealing mechanism is appointed using claim 1-9
Sealing mechanism described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142705.7U CN208537113U (en) | 2018-07-18 | 2018-07-18 | Sealing mechanism and vacuum box type helium detect test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142705.7U CN208537113U (en) | 2018-07-18 | 2018-07-18 | Sealing mechanism and vacuum box type helium detect test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208537113U true CN208537113U (en) | 2019-02-22 |
Family
ID=65385043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821142705.7U Active CN208537113U (en) | 2018-07-18 | 2018-07-18 | Sealing mechanism and vacuum box type helium detect test system |
Country Status (1)
| Country | Link |
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| CN (1) | CN208537113U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693224A (en) * | 2020-06-30 | 2020-09-22 | 湛江德利车辆部件有限公司 | Sealing structure, clamping device and clamping equipment |
| CN112067206A (en) * | 2020-08-20 | 2020-12-11 | 江门龙浩智能装备有限公司 | Sealing method |
-
2018
- 2018-07-18 CN CN201821142705.7U patent/CN208537113U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693224A (en) * | 2020-06-30 | 2020-09-22 | 湛江德利车辆部件有限公司 | Sealing structure, clamping device and clamping equipment |
| CN112067206A (en) * | 2020-08-20 | 2020-12-11 | 江门龙浩智能装备有限公司 | Sealing method |
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