CN106595987A - Workpiece pressure test sealing structure - Google Patents

Workpiece pressure test sealing structure Download PDF

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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
Application number
CN201611206360.2A
Other languages
Chinese (zh)
Inventor
李振河
冯长虹
马朝锋
陈旭
杨海龙
袁征
谢迎侠
孙晶
叶菁
袁凯
Original Assignee
河南省西峡汽车水泵股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 河南省西峡汽车水泵股份有限公司 filed Critical 河南省西峡汽车水泵股份有限公司
Priority to CN201611206360.2A priority Critical patent/CN106595987A/en
Publication of CN106595987A publication Critical patent/CN106595987A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating 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

The invention discloses a workpiece pressure test sealing structure. The structure comprises a T-shaped mandrel and a pressing sleeve. The mandrel is equipped with a rubber sealing component. One end of the mandrel is provided with a nut. The rubber sealing component adopts an O-shaped rubber sealing ring. An end portion of the mandrel is provided with an arc chamfer. The pressing sleeve is equipped with a limiting seat sleeve. The mandrel is provided with a pin. The pressing sleeve is provided with a limiting long hole which is cooperated with the pin. An outer end of the pressing sleeve is provided with a sealing feeding mechanism. The feeding mechanism comprises a support frame body and a telescoping cylinder which is fixedly connected to the support frame body. A telescoping end of the telescoping cylinder is connected to the pressing sleeve. The pressing sleeve is provided with a spring. The rubber sealing component adopts a rubber sealing sleeve. A waist drum type structure surrounds an excircle of the rubber sealing sleeve. In the invention, a sealing effect of structure is better than a traditional end surface sealing effect; the structure is designed to be simple and practical; and a sealing ring wear rate is effectively reduced and a service life of the workpiece pressure test sealing structure is prolonged.

Description

A kind of workpiece pressure testing sealing structure

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)

1. a kind of workpiece pressure testing sealing structure, it is characterised in that:It includes T-shaped mandrel and gland, is wherein coated with rubber on mandrel Glue sealing member, the outer end of gland arranges pressing mechanism.
2. workpiece pressure testing sealing structure as claimed in claim 1, it is characterised in that:The pressing mechanism is clamp nut.
3. workpiece pressure testing sealing structure as claimed in claim 1, it is characterised in that:Spacing cover for seat is coated with the gland.
4. workpiece pressure testing sealing structure as claimed in claim 1, it is characterised in that:Pin is set on the mandrel, on gland Spacing elongated hole with bayonet fittings is set.
5. workpiece pressure testing sealing structure as claimed in claim 1, it is characterised in that:The pressing mechanism include supporting frame and The telescopic cylinder of connection fixed thereto, the telescopic end of telescopic cylinder is connected with the gland.
6. the workpiece pressure testing sealing structure as described in claim 1 or 3, it is characterised in that:Spring is set on the gland.
7. workpiece pressure testing sealing structure as claimed in claim 1, it is characterised in that:The rubber seal adopts rubber seal Set.
8. a kind of workpiece pressure testing sealing structure, it is characterised in that:Including T-shaped mandrel and gland, wherein rubber is coated with mandrel Sealing member, is coated with spacing cover for seat on the gland, mandrel and limit base put the radial direction being correspondingly arranged for installing pin and lead to Hole, arranges the spacing elongated hole with bayonet fittings on gland, the outer end of the gland arranges hold-down mechanism, and the hold-down mechanism includes propping up Support body and the telescopic cylinder of connection fixed thereto, the telescopic end of telescopic cylinder is connected with the gland.
9. workpiece pressure testing sealing structure as claimed in claim 8, it is characterised in that:Spring is set on the gland.
10. workpiece pressure testing sealing structure as claimed in claim 8, it is characterised in that:The rubber seal is rubber seal Set.
CN201611206360.2A 2016-12-23 2016-12-23 Workpiece pressure test sealing structure CN106595987A (en)

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

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CN201611206360.2A CN106595987A (en) 2016-12-23 2016-12-23 Workpiece pressure test sealing structure

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Citations (10)

* Cited by examiner, † Cited by third party
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

Patent Citations (10)

* Cited by examiner, † Cited by third party
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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