CN106595987A - Workpiece pressure test sealing structure - Google Patents
Workpiece pressure test sealing structure Download PDFInfo
- Publication number
- CN106595987A CN106595987A CN201611206360.2A CN201611206360A CN106595987A CN 106595987 A CN106595987 A CN 106595987A CN 201611206360 A CN201611206360 A CN 201611206360A CN 106595987 A CN106595987 A CN 106595987A
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- CN
- China
- Prior art keywords
- sealing
- gland
- mandrel
- pressure testing
- workpiece pressure
- Prior art date
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 94
- 210000004907 Glands Anatomy 0.000 claims description 65
- 239000003292 glue Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 210000001624 Hip Anatomy 0.000 abstract 1
- 230000002035 prolonged Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000903 blocking Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injections Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000243 solutions Substances 0.000 description 2
- 280000255884 Dispatching companies 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effects Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005755 formation reactions Methods 0.000 description 1
- 239000007789 gases Substances 0.000 description 1
- 239000007788 liquids Substances 0.000 description 1
- 230000000116 mitigating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 239000007787 solids 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
-
- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
Description
Technical field
The present invention relates to mechanical equipment technical field, and in particular to a kind of workpiece pressure testing sealing structure.
Background technology
In mechanical manufacturing field, many pressure resistant vessels or cavity kind equipment or parts and components in general assembly and before dispatching from the factory generally Pressure testing is needed to check, to ensure to dispatch from the factory product quality, it is ensured that production equipment is normally used, it is to avoid operation troubles or accident are sent out It is raw.And, pressure test pressure is often far above equipment rated pressure.The pressure testing mode of this kind equipment or parts is usually by cavity Pressure testing gas injection（Liquid）All opening strict seal beyond hole, injection high-pressure fluid is protected according to set time to pressure test pressure After pressure, it is whether qualified to judge to check whether there is pressure drop.
At present, the pressure testing sealing of the opening adopts end face seal mostly, and the opening to being provided with adpting flange is then adopted It is connected with adpting flange with special pressure testing end cap and opening is blocked, and rubber seal is set in faying face.For Open-hole without adpting flange then needs to arrange pressure testing end cap hold-down mechanism, and can withstand greater than the pressure testing pressure of maximum Power.
Particularly, there is the pressure release connection open-hole of a Φ 14.96mm, its mouth end on automobile turbocharger housing Face has the flange of a short of width 2mm, implements the hold-down mechanism that maximum pressure test pressure is not needed only be above during end face seal, and And the rubber seal for end face seal is easily cut, often pressure testing once needs to change a sealing ring, not only changes close Seal is time-consuming, affects pressure testing working performance, particularly produces the enterprise of up to ten thousand products per month, and the consumption of its sealing ring is also corresponding Production cost is increased, the economic benefit of enterprise is affected.
The utility model of Application No. 201020222567.0 discloses a kind of sealing device for detection of turbocharger, institute Stating sealing device for detection of turbocharger includes：The closure core of connection air inlet by-pass valve port and detection connector, positioned at turbine The supercharger detection cylindrical base of sealing device one end, is socketed and for locking, sealing the positioning sleeve for blocking core, if It is placed in the locking nut and O-ring seals of air inlet by-pass valve port.The closure core intermediate formation has middle through hole, in blocking in core Through hole is connected with air inlet by-pass valve port, and the closure core is close proximity to the cylindrical base, shape by the positioning sleeve being socketed on the outside of it Into locking and sealing.When lifting or push set lever on manually, the mechanism can be carried out locking with compressor outlet close Envelope.Such design structure is complicated, and O-ring seals wear rate is high, and sealing effectiveness is bad, and needs manual operation, wastes time and energy.
The content of the invention
Problem to be solved by this invention is to provide a kind of workpiece pressure testing sealing structure, without the need for manual operation, sealing ring mill Loss rate is low, good sealing effect, and simple structure, easy to operate.
To solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of workpiece pressure testing sealing structure, including T-shaped mandrel and gland, are wherein coated with rubber seal on mandrel, gland Outer end arranges pressing mechanism.
The pressing mechanism is clamp nut.
Spacing cover for seat is coated with the gland.
Pin is set on the mandrel, the spacing elongated hole with bayonet fittings is set on gland.
The pressing mechanism includes the telescopic cylinder of supporting frame and connection fixed thereto, the telescopic end of telescopic cylinder and institute State gland connection.
Spring is set on the gland.
The rubber seal adopts rubber sealing boot.
A kind of workpiece pressure testing sealing structure, including T-shaped mandrel and gland, are wherein coated with rubber seal, institute on mandrel State and be coated with gland spacing cover for seat, mandrel and limit base put the radial direction through hole being correspondingly arranged for installing pin, on gland Arrange and the spacing elongated hole of bayonet fittings, the outer end of the gland arranges hold-down mechanism, the hold-down mechanism include supporting frame and The telescopic cylinder of connection fixed thereto, the telescopic end of telescopic cylinder is connected with the gland.
Spring is set on the gland.
The rubber seal is rubber sealing boot.
The workpiece pressure testing sealing structure of the present invention, its advantage is：
1) workpiece pressure testing sealing structure of the invention is directed to many difficulties and defect of end face seal, by the way of sealing, Simplify sealing structure so that sealing it is relatively reliable, operate it is easier, while so that the service life of rubber seal significantly Extend.
2) in the outer end end connection sealing driving and reversing mechanism of gland, the mechanization of sealing actuating is realized, is made beneficial to pressure testing The raising of industry efficiency and the mitigation of labor intensity.
3) rubber seal adopts special rubber sealing boot, beneficial to the area for increasing sealing engagement face, optimization sealing effect Really；The outer circumferential sides of rubber sealing boot are set to into loincloth drum type structure, during rubber sealing boot extrusion, its Extended from the axial middle part of rubber sealing boot to two-end part with the sealing engagement face for treating pressure testing through-hole wall, can be avoided The fold of rubber sealing boot, and then leaking for high-pressure fluid is avoided, also can further extend the service life of rubber sealing boot.
4）Spring is installed on gland, cushioning effect can be played to the advance and retreat of gland and mandrel, delay gland, mandrel and rubber The advance and retreat speed of glue sealing member, it is to avoid itself and the shock between through-hole wall to be sealed and transition friction and the wiping of region of interest Wound, extends the service life of rubber seal.
Description of the drawings
Below in conjunction with the accompanying drawings the invention will be further described：
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the structural representation of the embodiment of the present invention two；
Fig. 3 is the structural representation of the embodiment of the present invention three；
Fig. 4 is the structural representation of the embodiment of the present invention four；
Fig. 5 is the structural representation of the embodiment of the present invention five；
Fig. 6 is the structural representation of the embodiment of the present invention six.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, with reference to Fig. 1-6 pair of skill of the present invention Art scheme is further clearly and completely described.Specific embodiment is as follows：Obviously, described embodiment is this Bright a part of embodiment, rather than the embodiment of whole.Based on described embodiments of the invention, ordinary skill The every other embodiment that personnel are obtained, belongs to the scope of protection of the invention.
Embodiment one
As shown in Figure 1：Workpiece pressure testing sealing structure in the present invention, including T-shaped mandrel 1 and gland 2a, wherein install on mandrel 1 There is a rubber seal, gland 2a axis parts arrange through hole, and installed with mandrel 1 by the through hole and be connected.The rubber seal Part can adopt O shape rubber seal 3a, the external diameter Ying Ji of mandrel 1 diameter at end and O shapes rubber seal 3a and gland 2a greatly This is equal, coordinates with the diameter small―gap suture of through hole to be sealed 5, and the gap is preferably controlled in the range of 0.2 ~ 0.5mm, mandrel 1 Big end and gland are slidably matched with through hole to be sealed 5, O shapes rubber seal 3a and the interference fit of through hole to be sealed 5, should ensure Sealing structure can smoothly penetrate through hole to be sealed 5, ensure that good sealing effectiveness.Arrange in one end of mandrel 1 and compress Mechanism, the hold-down mechanism can adopt nut 4, be threadedly coupled with the outer end of mandrel 1, for preventing releasing for mandrel 2 and gland 2a, The pre-pressing of O shape rubber seal 3a can be realized simultaneously.The big end end of the mandrel 1 arranges arc angling, is easy to mandrel 1 To smoothly installing for through hole to be sealed 5.
The workpiece pressure testing sealing structure of present embodiment is directed to many defects of end face seal, by the way of sealing, Simplify sealing structure so that sealing is relatively reliable, operate easier.The sealing structure is carrying out container class or cavity class structure When part carries out pressure testing, only gland 2a need to be easily put in through hole to be sealed 5, and turn nut 4 is to O shape rubber seal 3a Implement pre-pressing so that O shapes rubber seal 3a is in close contact with the inwall of through hole to be sealed 5, reaches normal sealing state. During high-pressure fluid enforcement pressure testing boosting is injected into the cavity of container class or cavity class component, its pressure acts on mandrel The end face at 1 big end, the trend for expanding the cavity volume causes mandrel 1 towards the direction movement of extruding O shape rubber seal 3a, O shape rubber seal 3a is further deformed, increase its contact area and pressure with the inwall of through hole to be sealed 5, sealing property Further improve, and pressure test pressure is higher, and sealing property is better.Pressure testing is completed and carried out after pressure release, as long as loose nut 4, O Shape rubber seal 3a recovers original form, and sealing device is easily taken out.
Embodiment two
Referring to Fig. 2, as the improvement of embodiment one, spacing cover for seat 6 can be installed on gland 2a.Spacing cover for seat 6a one end with treat close Envelope through hole 5 outer face contact, the other end can with the aft mounted Hp contacts of the gland 2a, to limit gland 2a and O shape Sealing ring 3a puts in the depth of through hole to be sealed 5, without the need for controlling this depth manually, can avoid putting in the too deep of depth or it is excessively shallow and Sealing effectiveness is affected, operation is also more quick, using the raising of pressure testing working performance.
Embodiment three
Referring to Fig. 3, as further improvement, pin 7a can be set on mandrel 1, while arranging and pin 7a on gland 2b The spacing elongated hole 8 for coordinating.So, the axle center hole for being used to install mandrel 1 on gland 2b can be set to blind hole, to prevent mandrel 1 Releasing during advance and retreat.On the basis of this structure, sealing driving and reversing mechanism, the sealing can be set in the outer end end of gland 2b Driving and reversing mechanism includes and pressure testing clamping workpiece mold（Do not show in figure）The supporting frame 9 that is fixedly connected and solid with the supporting frame 9 The telescopic cylinder 10 of fixed connection, the telescopic end of telescopic cylinder 10 is connected with the gland 2b, is achieved in gland 2b and mandrel 1 Fast advance and retreat, and the axial location by telescopic cylinder 10 and gland 2b fixes, gland 2b can accurately align through hole to be sealed 5, It is allowed to free to advance or retreat.
The structure when in use, by the propulsion of telescopic cylinder 10, promotes gland 2b, O shape rubber seal 3a and mandrel 1 Put in through hole to be sealed 5.After gland T-shaped end face is contacted with spacing cover for seat 6a, promote the front end face of spacing cover for seat 6a and treat close The outer face of envelope through hole 5 contacts and stops propulsion, and now the pin 7a is located at spacing elongated hole 8 near putting in one end part, O shapes Sealing ring 3a is freely sealed with its inner and outer diameter and the external diameter of mandrel 1 and overproof being in through hole to be sealed 5 of the internal diameter of through hole to be sealed 5 State.When high-pressure fluid enforcement boosting is injected in the cavity of pressure testing container class or cavity class workpiece, its pressure is acted on In the end face at the end greatly of mandrel 1, the trend for expanding the cavity volume causes mandrel 1 towards the side of extruding O shape rubber seal 3a To movement, O shape rubber seal 3a is deformed, increases the contact surface of O shapes rubber seal 3a and the inwall of through hole to be sealed 5 Product, and as the rising of pressure test pressure, sealing property are improved constantly, finally realize maximally effective sealing.Pressure testing is completed and carried out After pressure release, by the actuating of telescopic cylinder 10 gland 2b is retreated, the pin 7a is to close spacing elongated hole 8 near gland 2b The direction movement of outer end, O shapes rubber seal 3a recovers original form, and gland 2b and mandrel 1 exit through hole to be sealed 5, release Sealing.
Example IV
Referring to Fig. 4, as the further improvement of embodiment three, a spring 11 can be installed on gland 2b, to gland 2b and core The advance and retreat of axle 1 play cushioning effect, delay the advance and retreat speed of gland 2b, mandrel 1 and rubber seal, it is to avoid it is logical with to be sealed Shock and transition friction between the inwall of hole 5, beneficial to the service life for extending rubber seal.The hold-down mechanism can also be adopted Special rubber sealing boot 3b, to increase the area in sealing engagement face, optimizes sealing effectiveness.Certainly also can be by rubber sealing boot 3b Outer circumferential sides are set to loincloth drum type structure, during rubber sealing boot 3b extrusions, its with treat in pressure testing through hole 5 The face that is sealingly engaged of wall is extended from the axial middle part of rubber sealing boot 3b to two-end part, can avoid rubber sealing boot 3b Fold, and then avoid leaking for high-pressure fluid.
Embodiment five
Referring to Fig. 5, another kind of workpiece pressure testing sealing structure of the present invention, including T-shaped mandrel and gland 2b are wherein installed on mandrel There is rubber seal, the rubber seal can adopt O-shaped rubber ring 3a.Spacing cover for seat 6b, core are coated with the gland 2b It is correspondingly arranged the radial direction through hole for installing pin 7b on axle 1 and spacing cover for seat 6b, spacing cover for seat 6b is moved through pin 7b Band moving mandrel 1 synchronizing moving.The spacing elongated hole 8 coordinated with pin 7b is set on gland 2b, is arranged in the outer end of gland 2b and is compressed Mechanism, the hold-down mechanism includes the telescopic cylinder 10 of supporting frame 9 and connection fixed thereto, the telescopic end of telescopic cylinder 10 and institute State gland 2b connections.
When carrying out pressure testing using the workpiece pressure testing sealing structure, by after pressure testing clamping workpiece is finished, start telescopic cylinder 10, promote gland 2b to move to the direction for putting in through hole to be sealed 5, mandrel 1 is moved in the presence of frictional force with gland 2b, and Spacing cover for seat 6b movement is driven by pin 7b；When spacing cover for seat 6b contacts and stop movement with the outer face of through hole to be sealed 5 Afterwards, mandrel 1 also stops therewith movement, and now gland 2b is continued to move under the promotion of the telescopic end of telescopic cylinder 10, and close to O shapes Seal 3a pressures are allowed to be deformed, and reach the effect of reinforcing sealing；When gland 2b upper limits elongated hole 8 after end in contact after press Set 2b stops movement, reaches most strong sealing state, you can carry out pressure testing.After the completion of pressure testing, by operating telescopic cylinder 10 Make to be moved after gland 2b, O-ring seals 3a releases of pressure recover initial condition, after front end in contact of the pin 7b with spacing elongated hole 8, mandrel 1 and spacing cover for seat 6b also treat pressure testing through hole 5 with moving after gland 2b and remove.
Embodiment six
Referring to Fig. 6, as the further improvement to the technical scheme of embodiment five, in order to realize the gland 2b, mandrel 1 and rubber Sealing member extends the service life of rubber seal relative to the elasticity turnover of through hole to be sealed 5, and slowly lets out when exiting Pressure, it is ensured that the safety of pressure testing environment, on the gland 2b spring is arranged.The rubber seal can adopt rubber sealing boot 3b, is easy to increase sealing surface, it is to avoid rubber seal is punctured during pressure testing by high-pressure fluid.
Finally illustrate, above example is only to illustrate technical scheme and unrestricted, and this area is common Other modifications or equivalent that technical staff is made to technical scheme, without departing from technical solution of the present invention Spirit and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611206360.2A CN106595987A (en) | 2016-12-23 | 2016-12-23 | Workpiece pressure test sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611206360.2A CN106595987A (en) | 2016-12-23 | 2016-12-23 | Workpiece pressure test sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106595987A true CN106595987A (en) | 2017-04-26 |
Family
ID=58603450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611206360.2A CN106595987A (en) | 2016-12-23 | 2016-12-23 | Workpiece pressure test sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106595987A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476943U (en) * | 2009-06-26 | 2010-05-19 | 厦门永裕机械工业有限公司 | Seal detection clamp of sealed container |
| CN201628615U (en) * | 2010-03-25 | 2010-11-10 | 镇海石化建安工程有限公司 | Quick interface unit used for pressure test |
| CN202757841U (en) * | 2012-08-29 | 2013-02-27 | 李洪普 | Lamp bulb compression resistance testing tool |
| CN203336134U (en) * | 2013-05-30 | 2013-12-11 | 重庆红旗缸盖制造有限公司 | Leakage check seal plugging device |
| CN103528761A (en) * | 2013-10-24 | 2014-01-22 | 安徽江淮汽车股份有限公司 | Internal expansion block sealing device for hole |
| CN203453706U (en) * | 2013-07-22 | 2014-02-26 | 重庆市和诚机电设备制造有限公司 | Pipeline blocking tool |
| CN203688163U (en) * | 2013-12-31 | 2014-07-02 | 浙江吉利控股集团有限公司 | Leakage-testing sealing device of engine cylinder cover VVT valve hole |
| CN105402404A (en) * | 2015-12-22 | 2016-03-16 | 中车戚墅堰机车车辆工艺研究所有限公司 | Tensioning-type inner hole sealing mechanism and application thereof |
| CN205136589U (en) * | 2015-11-24 | 2016-04-06 | 常德东鼎动力机械有限公司 | Cylinder block leak test sealing device |
| CN205350342U (en) * | 2016-01-15 | 2016-06-29 | 上海汽车变速器有限公司 | Multicavity room compound seal shutoff mechanism |
-
2016
- 2016-12-23 CN CN201611206360.2A patent/CN106595987A/en not_active Application Discontinuation
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476943U (en) * | 2009-06-26 | 2010-05-19 | 厦门永裕机械工业有限公司 | Seal detection clamp of sealed container |
| CN201628615U (en) * | 2010-03-25 | 2010-11-10 | 镇海石化建安工程有限公司 | Quick interface unit used for pressure test |
| CN202757841U (en) * | 2012-08-29 | 2013-02-27 | 李洪普 | Lamp bulb compression resistance testing tool |
| CN203336134U (en) * | 2013-05-30 | 2013-12-11 | 重庆红旗缸盖制造有限公司 | Leakage check seal plugging device |
| CN203453706U (en) * | 2013-07-22 | 2014-02-26 | 重庆市和诚机电设备制造有限公司 | Pipeline blocking tool |
| CN103528761A (en) * | 2013-10-24 | 2014-01-22 | 安徽江淮汽车股份有限公司 | Internal expansion block sealing device for hole |
| CN203688163U (en) * | 2013-12-31 | 2014-07-02 | 浙江吉利控股集团有限公司 | Leakage-testing sealing device of engine cylinder cover VVT valve hole |
| CN205136589U (en) * | 2015-11-24 | 2016-04-06 | 常德东鼎动力机械有限公司 | Cylinder block leak test sealing device |
| CN105402404A (en) * | 2015-12-22 | 2016-03-16 | 中车戚墅堰机车车辆工艺研究所有限公司 | Tensioning-type inner hole sealing mechanism and application thereof |
| CN205350342U (en) * | 2016-01-15 | 2016-06-29 | 上海汽车变速器有限公司 | Multicavity room compound seal shutoff mechanism |
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Application publication date: 20170426 |
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