CN201749003U - Magnetofluid shaft seal leakage detection device - Google Patents
Magnetofluid shaft seal leakage detection device Download PDFInfo
- Publication number
- CN201749003U CN201749003U CN2010202875128U CN201020287512U CN201749003U CN 201749003 U CN201749003 U CN 201749003U CN 2010202875128 U CN2010202875128 U CN 2010202875128U CN 201020287512 U CN201020287512 U CN 201020287512U CN 201749003 U CN201749003 U CN 201749003U
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- magnetofluid
- leakage detection
- detection device
- magnetic fluid
- detection apparatus
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Abstract
The utility model discloses a magnetofluid shaft seal leakage detection device comprising a body, wherein the center of the body is axially provided with a vent hole in which helium can be led; the bottom of the body is provided with an annular groove in which a sealing ring is placed; the upper center of the body is axially provided with a magnetofluid inserting slot hole; and the magnetofluid inserting slot hole and the vent hole are mutually communicated. The magnetofluid shaft seal leakage detection device can ensure seal for leakage detection and provides a sealed cavity (a magnetofluid sealed cavity and a linked shaft head can be exactly placed in an inner cavity) with the size approaching minimization, and is light in weight, convenient to carry, and fast and simple in installation. The magnetofluid neither needs installing on an actual workpiece nor needs complicated installation for connection with the leakage detection device, and the aim of detecting the tightness of the magnetofluid can be realized only by sheathing the sealing ring on the device without any screws. The magnetofluid shaft seal leakage detection device offers a fastest and most accurate method of incoming leakage detection for magnetofluid parts and the efficiency of judging the quality state of the magnetofluid in terms of tightness is greatly improved.
Description
Technical field
The utility model relates to a kind of envelope leakage detection apparatus, relates in particular to a kind of magnetic current axon envelope leakage detection apparatus.
Background technology
Magnetic fluid dynamic sealing device (hereinafter to be referred as magnetic fluid) is in case inflatable (SF6 gas) high-voltage switch gear application cashier's office in a shop altogether, mainly be at air chamber after filling SF6 gas with, satisfying a device that can guarantee sealing property under the moving condition of axle for what solve that on-load switch axle motive seal problem adopts.Before this device of utilization, the encapsulating method at this position, employing be the way that as shown in Figure 1 O-ring seal adds fluid sealant.Because the action need of the divide-shut brake of on-load switch, transmission shafts is moving can't to guarantee gas tightness for a long time with O-ring seal or fluid sealant but in use.So exist this position that the little phenomenon of leaking slowly of gas is arranged.
If can not guarantee the sealing of the magnetic fluid assembled, when manufacture test, just find its gas leakage, change it, the amount of doing over again is huge, the time of being delaied also is very long.
The realization of prior art scheme is that magnetic fluid directly is put on the pallet, and leak locator vacuumizes leak detection then.Technically, two faces that contacted under this method---a surface of contact non-tight face on the magnetic fluid and a surface of contact of pallet weaken greatly because of lacking the O-ring seal sealing.The prior art scheme to the maximum deficiency of magnetic fluid leak detection is: one, lack a frock that can guarantee sealing.Two, failing that each surface of contact is carried out Sealing Technology handles.Three, select the sealing surface of magnetic fluid incorrect.Above-mentioned 3 cause poorly sealed so that judge inaccurate, often erroneous judgement.Thereby sealing weakens the shortcoming that causes three aspects in the practical operation greatly: leak detection inefficiency, the low a large amount of helium of waste that reach of leak detection accuracy.
Summary of the invention
The purpose of this utility model provides a kind of high efficiency of hunting leak, the accurate performance of leak detection reaches does not well waste the magnetic current of helium axon envelope leakage detection apparatus.
The purpose of this utility model is achieved through the following technical solutions, magnetic current axon envelope leakage detection apparatus comprises: cylindrical body, the central shaft of described cylindrical body is to having the air hole that is used to feed helium, the bottom of cylindrical body has the ring groove that is used to place O-ring seal, the central upper portion of cylindrical body axially has magnetic fluid and inserts slotted eye, and described magnetic fluid inserts slotted eye and air hole and is interconnected.
The technical scheme that is provided by above-mentioned the utility model is as can be seen: the sealing when, guaranteeing to hunt leak.Two, for magnetic fluid leak detection operation provides a volume minimized seal chamber (inner chamber only can just be put into magnet fluid sealing chamber and interlock spindle nose) that becomes, in light weight, be easy to carry.Three, install simple fast: make magnetic fluid need not be installed to practical work piece and get on, being connected with this leakage detection apparatus does not more need complex installation, does not need a screw, as long as it is last once putting the purpose that can realize the detection magnet fluid sealing toward device to put O-ring seal.Four, by axle envelope leakage detection apparatus body, magnet fluid sealing circle, pallet O-ring seal and a pallet, directly magnetic fluid is positioned on the device, can under the prerequisite that guarantees sealing, hunts leak accurately by helium mass spectrometer leak detector.For advancing factory's leak detection, the magnetic fluid parts provide the mode of hunting leak the most fast and accurately.Five, improved the efficient of magnet fluid sealing performance quality condition judgement greatly.
Description of drawings
Fig. 1 is the synoptic diagram of existing magnetic fluid leak detection,
Fig. 2 is the magnetic current axon envelope leakage detection apparatus structural representation that embodiment of the present utility model provides,
Fig. 3 be the A of Fig. 2 to view,
Fig. 4 be the B of Fig. 2 to view,
Fig. 5 is the user mode synoptic diagram of magnetic current axon envelope leakage detection apparatus of the present utility model.
Embodiment
Magnetic current axon envelope leakage detection apparatus of the present utility model, preferred implementation such as Fig. 2～shown in Figure 4, comprise: body 3-1, the central shaft of described body 3-1 is to having the air hole 3-3 that is used to feed helium, the bottom of body 3-1 has the ring groove 3-2 that is used to place O-ring seal, the central upper portion of body 3-1 axially has magnetic fluid and inserts slotted eye 3-4, and described magnetic fluid inserts slotted eye 3-4 and air hole 3-3 is interconnected.
Described body 3-1 is cylindrical.
It is concentric circles that described magnetic fluid inserts between slotted eye 3-4 and the air hole 3-3.
Be provided with in the ring groove 3-2 of described body 3-1 bottom be used for and pallet between the pallet O-ring seal 5 that seals.
The periphery that the magnetic fluid on described body 3-1 top inserts slotted eye 3-4 be provided be used for and magnetic fluid between the magnet fluid sealing circle 4 that seals.
Excellent sealing when the magnetic current axon envelope leakage detection apparatus that this embodiment provides is hunted leak for realization between workpiece and leakage detecting instrument has adopted the method for axle envelope leakage detection apparatus body and upper and lower two O-ring seals to realize.Device top is thicker O-ring seal, is loaded in the annular groove that O-ring seal is installed on the magnetic fluid, contacts with axle envelope leakage detection apparatus when magnetic fluid is put on the leak detection tool equipment; The device bottom is thinner O-ring seal, this O-ring seal is loaded in the O-ring seal mounting groove of leakage detection apparatus bottom, be put on the pallet, pallet again with the leak locator air intake opening by O-ring seal and clamp connection.Like this, when helium mass spectrometer leak detector vacuumizes, just guaranteed the sealing problem between magnetic fluid and leakage detection apparatus, leakage detection apparatus and pallet and pallet and instrument.Guaranteed sealing, just guaranteed accuracy, also avoided leak detection inefficiency, the low a large amount of helium phenomenons of waste that reach of leak detection accuracy the judgement of magnet fluid sealing performance.
The technical solution of the utility model mainly embodies the beneficial effect of following several aspects by the utilization in actual leak detection work:
Efficient: to magnetic fluid leak detection,, cause poorly sealedly under the prior art scheme condition, can't finish fast thereby vacuumize, or even not take out vacuum, the influence efficient of hunting leak because of annular seal space and the O-ring seal that no frock provides.Technical scheme behind employing the utility model is hunted leak, and work efficiency improves 50%, that is: be example with 1 magnetic fluid, originally needs only can finish with 5 minutes now with 10 minutes.
Accuracy: under the prior art scheme condition magnetic fluid is hunted leak, the annular seal space and the O-ring seal that provide because of no frock, cause poorly sealed, when the spray helium leak check, helium can be between magnetic fluid and pallet untight surface of contact slit enter the mass spectrum chamber of helium mass spectrometer leak detector and be detected, thereby cause erroneous judgement.Technical scheme behind employing the utility model is hunted leak, and has stopped this shortcoming fully, has improved the accuracy that detects greatly.Under the prior art scheme condition, the False Rate in the practice is about about 10%, and after adopting the utility model, False Rate is less than 1%.
Consumption reduction: to the magnetic fluid leak detection, annular seal space and O-ring seal because of no frock provides cause poorly sealed under the prior art scheme condition, when the spray helium leak check, trial assembly is repeatedly sprayed helium repeatedly and is carried out careful leak detection, not only spends the plenty of time but also expend a large amount of helium.Next full bottle helium of prior art scheme can detect 500～600 magnetic fluids, and this can detect more than 1000 under scheme of utility model.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (5)
1. a magnetic current axon is sealed leakage detection apparatus, it is characterized in that, comprise: body, the central shaft of described body is to having the air hole that is used to feed helium, the bottom of body has the ring groove that is used to place O-ring seal, the upper part of body central shaft inserts slotted eye to having magnetic fluid, and described magnetic fluid inserts slotted eye and air hole is interconnected.
2. magnetic current axon envelope leakage detection apparatus according to claim 1 is characterized in that described body is cylindrical.
3. magnetic current axon envelope leakage detection apparatus according to claim 2 is characterized in that it is concentric circles that described magnetic fluid inserts between slotted eye and the air hole.
4. magnetic current axon according to claim 3 envelope leakage detection apparatus is characterized in that, be provided with in the ring groove of described body bottom be used for and pallet between the pallet O-ring seal that seals.
5. magnetic current axon according to claim 4 envelope leakage detection apparatus is characterized in that, the periphery that the magnetic fluid on described body top inserts slotted eye be provided be used for and magnetic fluid between the magnet fluid sealing circle that seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202875128U CN201749003U (en) | 2010-08-10 | 2010-08-10 | Magnetofluid shaft seal leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202875128U CN201749003U (en) | 2010-08-10 | 2010-08-10 | Magnetofluid shaft seal leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749003U true CN201749003U (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202875128U Expired - Fee Related CN201749003U (en) | 2010-08-10 | 2010-08-10 | Magnetofluid shaft seal leakage detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201749003U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752265A (en) * | 2013-12-31 | 2015-07-01 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Helium leakage alarm processing method and system of semiconductor device |
| CN105909889A (en) * | 2016-07-13 | 2016-08-31 | 株洲南车奇宏散热技术有限公司 | Device and method for sealing and locking water nozzle of liquid-cooled radiator |
| CN110441003A (en) * | 2019-07-19 | 2019-11-12 | 北京航空航天大学 | A kind of adjustable rotation axis seal leakage amount measuring device for electricity of pressure and temp and method |
| CN110441004A (en) * | 2019-07-19 | 2019-11-12 | 北京航空航天大学 | A kind of rotation axis seal leakage amount measuring device for electricity and its measurement method |
| WO2021258710A1 (en) * | 2020-06-23 | 2021-12-30 | 北京品驰医疗设备有限公司 | Testing apparatus and method for rough leakage detection of sealing performance of sealing ring |
-
2010
- 2010-08-10 CN CN2010202875128U patent/CN201749003U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752265A (en) * | 2013-12-31 | 2015-07-01 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Helium leakage alarm processing method and system of semiconductor device |
| CN104752265B (en) * | 2013-12-31 | 2017-09-01 | 北京北方微电子基地设备工艺研究中心有限责任公司 | The helium leakage alert processing method and system of semiconductor equipment |
| CN105909889A (en) * | 2016-07-13 | 2016-08-31 | 株洲南车奇宏散热技术有限公司 | Device and method for sealing and locking water nozzle of liquid-cooled radiator |
| CN105909889B (en) * | 2016-07-13 | 2018-02-13 | 株洲中车奇宏散热技术有限公司 | A kind of device and method of liquid cooling heat radiator water nozzle sealing locking |
| CN110441003A (en) * | 2019-07-19 | 2019-11-12 | 北京航空航天大学 | A kind of adjustable rotation axis seal leakage amount measuring device for electricity of pressure and temp and method |
| CN110441004A (en) * | 2019-07-19 | 2019-11-12 | 北京航空航天大学 | A kind of rotation axis seal leakage amount measuring device for electricity and its measurement method |
| CN110441004B (en) * | 2019-07-19 | 2020-08-11 | 北京航空航天大学 | Rotating shaft seal leakage quantity measuring device and measuring method thereof |
| WO2021258710A1 (en) * | 2020-06-23 | 2021-12-30 | 北京品驰医疗设备有限公司 | Testing apparatus and method for rough leakage detection of sealing performance of sealing ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20180810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |