CN105241782A - Detection method and apparatus for penetration crack - Google Patents
Detection method and apparatus for penetration crack Download PDFInfo
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- CN105241782A CN105241782A CN201510609156.4A CN201510609156A CN105241782A CN 105241782 A CN105241782 A CN 105241782A CN 201510609156 A CN201510609156 A CN 201510609156A CN 105241782 A CN105241782 A CN 105241782A
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- gas tank
- gas
- inflator
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- pipe
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Abstract
The invention discloses a detection method and apparatus for a penetration crack, belonging to the field of structural designing of a stator of an aircraft engine. The detection apparatus for the penetration crack comprises a gas tank (1), a pressure gauge (2), a tube (3) and an inflator (5), wherein one end of the gas tank (1) is sealed at a crack of a to-be-detected device through bonding by an adhesive, the other end of the gas tank (1) is connected with the inflator (5) through the tube (3), and the gas tank (1) is also connected with the pressure gauge (2). After the gas tank covers and seals the crack, the amount of gas entering the gas tank is controlled through a switch arranged on the tube; when gas tank is inflated, the switch is closed, the pointer of the pressure gauge is checked, and the crack is determined to be a non-penetration crack if the position of the pointer does not change while the crack is determined to be a penetration crack if the position of the pointer has changed; and gas is further injected into the gas tank to allow the gas in the gas tank to reach a certain pressure, and then the gas tank and the to-be-detected device are separated. The detection apparatus is simple in structure and easy to operate, and separation of the detection apparatus from the to-be-detected device is easy.
Description
Technical field
The invention belongs to aircraft engine stator structure design field, relate to a kind of method whether crackle judging that component matrix occurs splits.
Background technology
Many stator parts of engine are designed to welded structure, welding seam design is in inner side in some structures, joint designs is outside, now use conventional Non-Destructive Testing such as, the methods such as fluorescence, painted and eddy current limit by design feature, even if weld seam does not split, these lossless detection methods also must be judged as crackle, so just cannot differentiate that whether weld joint on inner side occurs crackle, easily breaks down when Crack Extension.
Structure in a confined space is placed into for some, only has a little view window, when suspecting that crackle appears in some position, due to distant, the method of very difficult Non-Destructive Testing judges, also only can tentatively judge to occur crackle with endoscope, the position not so good for some surface quality also not easily judges, the method can not determine whether crackle splits simultaneously.
Summary of the invention
In order to solve the problem, the present invention proposes the simple through wall flaw detection method of a kind of structure, when crackle splits matrix, can accurately determine by this method.
First aspect present invention proposes a kind of through wall flaw detection method, and whether the line seam treated on pick-up unit is that through wall flaw detects, and comprising:
S1, the gas tank of one end open to be arranged on equipment to be detected, to make the opening part of described gas tank cover described line seam completely, and described gas tank edge of opening is sealed on described equipment to be detected;
S2, by gas tank the other end connect source of the gas, and by this gas tank be communicated with tensimeter;
S3, fill with into proper amount of gas by described source of the gas in the gas tank of described sealing, described proper amount of gas refers to that this gas is pressure gas in described gas tank, and this pressure gas can not destroy the connection device of described gas tank and described device to be detected;
The tensimeter numerical value change that S4, detection are communicated with described gas tank.
Preferably, described gas tank one end connects inflator by pipe.
In above-mentioned either a program preferably, described pipe is provided with switch, described switch can make the gas in described gas tank and described inflator be interconnected or disconnect.
In above-mentioned either a program preferably, the other end of described gas tank is uncovered, and this uncovered edge is provided with jelly, and this end of described gas tank is sealedly connected on Devices to test.
Based on said method, the present invention provides the through wall flaw pick-up unit of another kind of coupling in addition, and it comprises: gas tank, tensimeter, pipe and inflator, and described gas tank one end is sealed in the line seam place of device to be detected, the other end connects inflator by pipe, and described gas tank is Bonding pressure table also.
Preferably, described pipe is provided with switch, described switch can make the gas in described gas tank and described inflator be interconnected or disconnect.
In above-mentioned either a program preferably, described gas tank is provided with jelly in the uncovered edge of one end that it is connected with device to be detected, and described jelly enables this end of described gas tank be sealedly connected on Devices to test.
Advantage of the present invention is: after gas tank, tensimeter, pipe, switch, inflator being connected, maintained switch is in open mode, then carries out punching press by inflator to gas tank.When after gas tank punching press, closing switch, see whether gauge hand changes, if do not become, then crackle does not split, if pointer changes, crackle splits.When crackle is larger, in gas replenishment process, manometric pointer changes always, is easy to determine that crackle splits.
Accompanying drawing explanation
Fig. 1 is the structural representation according to through wall flaw pick-up unit of the present invention.
Wherein, 1 is gas tank, and 2 is tensimeter, and 3 is pipe, and 4 is switch, and 5 is inflator.
Embodiment
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
The present invention first aspect provides a kind of through wall flaw detection method, and whether the line seam treated on pick-up unit is that through wall flaw detects, and mainly comprises the following steps:
S1, the gas tank of one end open to be arranged on equipment to be detected, to make the opening part of described gas tank cover described line seam completely, and described gas tank edge of opening is sealed on described equipment to be detected;
S2, by gas tank the other end connect source of the gas, and by this gas tank be communicated with tensimeter;
S3, fill with into proper amount of gas by described source of the gas in the gas tank of described sealing, described proper amount of gas refers to that this gas is pressure gas in described gas tank, and this pressure gas can not destroy the connection device of described gas tank and described device to be detected;
The tensimeter numerical value change that S4, detection are communicated with described gas tank.
Be understandable that, by source of the gas to after gas tank inflation, whether observed pressure watch change numerical value can split by very fast determination crackle, choosing it and being determined on a case-by-case basis of source of the gas can be such as pneumatic plant, or produces gas by some chemical reaction and serve as source of the gas etc., in the present embodiment, described source of the gas is inflator, for this reason, needs to connect described inflator in described gas tank one end by pipe.This design ensure that the reliability of connection on the one hand, source of the gas can be made to divide from pick-up unit and gas tank on the other hand and work in different occasion, ensure that the security of operating personnel.
As a preferred implementation of the present embodiment, described pipe is provided with switch, described switch can make the gas in described gas tank and described inflator be interconnected or disconnect.The design of switch is controlled when source of the gas can not only be made to inflate, and can also make, when source of the gas stops gas transmission, to ensure that the gas in gas tank can not flow backwards, thus ensure the accuracy of operation.
Be understandable that, when operating according to above-mentioned steps, the other end of described gas tank is uncovered, and this uncovered edge is provided with jelly, and this end of described gas tank is sealedly connected on Devices to test.Connected by the mode of glueing joint, better advantage is: maintained switch is in open mode, then carry out after punching press detects by inflator to gas tank, by choosing the stickup degree of jelly, punching press can be continued to gas tank, to reach the stickup degree upper limit of jelly, thus be beneficial to being separated of equipment to be detected and gas tank.
As shown in Figure 1, in order to mate said method, the present invention also schematically provides through wall flaw pick-up unit, it comprises: gas tank 1, tensimeter 2, pipe 3 and inflator 5, described gas tank 1 one end is sealed in the line seam place of device to be detected, the other end connects inflator 5 by pipe 3, and Bonding pressure table 2 gone back by described gas tank 1.
Corresponding with method, in through wall flaw pick-up unit, described pipe 3 is provided with switch 4, described switch 4 can make the gas in described gas tank and described inflator be interconnected or disconnect.
It should be noted that, described gas tank 1 open at one end, uncovered size is arranged to cover crack, and, suitably can repair gas tank 1 edge of opening with the structure of equipment to be detected at crack place, as an alternate embodiment of the present embodiment, described gas tank 1 edge of opening also can be smooth, when gas tank 1 is sealed on equipment to be detected by needs, can add in the middle of the crack that exists between gas tank 1 and equipment to be detected by adding the form of fluid sealant.
Equally, described gas tank 1 is provided with jelly in the uncovered edge of one end that it is connected with device to be detected, and described jelly enables this end of described gas tank 1 be sealedly connected on Devices to test.And when continuing the pressure strengthening gas in gas tank 1, being separated of gas tank 1 and equipment to be detected can be made.
When concrete operations, first tensimeter 2 and pipe 3 are connected on gas tank 1, are coated with daub at gas tank oral area, then gas tank are fixed to testee surface.Maintained switch 4 is in open mode, then carries out punching press by inflator 5 pairs of gas tanks 1.Continue gas tank punching press after detecting, gas tank is decomposed.Judge whether matrix cracking splits according to tensimeter 2 pointer situation of change.Wherein the Interface Shape of gas tank and detected matrix can be circle, strip and other abnormity, and these shapes can adapt to different detected object shapes, the detectability of expansion this method.
Thus, in the present embodiment, preferred employing pressure sensitive adhesive, pressure sensitive adhesive is the abbreviation of pressure-sensitive adhesive, that a class has tackifier pressure being had to susceptibility, mainly for the preparation of pressure sensitive adhesive tape, the peeling force of general pressure sensitive adhesive (adhesive tape and by maxxaedium pressurize paste after the peeling force that shows) base adhesion force (adhesion between tackifier and base material) of cohesion (acting force between pressure sensitive adhesive molecule) < tackifier of < tackifier.Such pressure-sensitive adhesive does not in use just have the generation of phenomenons such as coming unstuck.Pressure sensitive adhesive in the present embodiment is as polyacrylate or polyvingl ether two class, and base material requires is even, retractility little and good to solvent wellability.
Wherein, the gas tank 1 that penetrability splits pick-up unit is stainless steel, and it also can be the metal species such as plain carbon steel, aluminium alloy or alloy type hard material, and pipe 3 is rubber hose, under some special occasions, also can be steel pipe.
The present invention takes gas tank to detect to determine that through wall flaw needs the technical problem underlying solved to comprise two aspects, and one is the reliable fixing of gas tank, simultaneously each union piece itself and connecting portion air tight, two is detect rear gas tank easily to dismantle.Based on above-mentioned requirements, provide the fixed form of gas tank, can take to glued joint and fix, the method structure is simple, but high to the requirement of glue.In a certain pressure limit, glue can ensure that gas tank is fixed on testee, and when continuing pressurising, pressure is greater than splicing power, and gas tank and matrix are thrown off.And if when there is crackle in matrix, need to gas tank continuous punching, until pressure is enough.
Apparatus structure of the present invention is simple, operation is efficient, both can detect weld metal crack, and also can detect non-weld metal crack, especially the method does not need cleaning, be easy to operation, have the position of operating space distance to be a kind of method of reasonable for some, reseach of engine risk can be reduced.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a through wall flaw detection method, whether the line seam treated on pick-up unit is that through wall flaw detects, and it is characterized in that, comprising:
S1, the gas tank of one end open to be arranged on equipment to be detected, to make the opening part of described gas tank cover described line seam completely, and described gas tank edge of opening is sealed on described equipment to be detected;
S2, by gas tank the other end connect source of the gas, and by this gas tank be communicated with tensimeter;
S3, fill with into proper amount of gas by described source of the gas in the gas tank of described sealing, described proper amount of gas refers to that this gas is pressure gas in described gas tank, and this pressure gas can not destroy the connection device of described gas tank and described device to be detected;
The tensimeter numerical value change that S4, detection are communicated with described gas tank.
2. through wall flaw detection method as claimed in claim 1, is characterized in that: described gas tank one end connects inflator by pipe.
3. through wall flaw detection method as claimed in claim 2, it is characterized in that: described pipe is provided with switch, described switch can make the gas in described gas tank and described inflator be interconnected or disconnect.
4. through wall flaw detection method according to claim 3, is characterized in that: the other end of described gas tank is uncovered, this uncovered edge is provided with jelly, and this end of described gas tank is sealedly connected on Devices to test.
5. a through wall flaw pick-up unit, it is characterized in that: described device comprises gas tank (1), tensimeter (2), pipe (3) and inflator (5), described gas tank (1) one end is sealed in the line seam place of device to be detected, the other end connects inflator (5) by pipe (3), and described gas tank (1) is Bonding pressure table (2) further.
6. through wall flaw pick-up unit as claimed in claim 5, it is characterized in that: described pipe (3) is provided with switch (4), described switch can make the gas in described gas tank and described inflator be interconnected or disconnect.
7. through wall flaw pick-up unit as claimed in claim 5, it is characterized in that: described gas tank (1) is provided with jelly in the uncovered edge of one end that it is connected with device to be detected, described jelly enables this end of described gas tank be sealedly connected on Devices to test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609156.4A CN105241782A (en) | 2015-09-22 | 2015-09-22 | Detection method and apparatus for penetration crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609156.4A CN105241782A (en) | 2015-09-22 | 2015-09-22 | Detection method and apparatus for penetration crack |
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| Publication Number | Publication Date |
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| CN105241782A true CN105241782A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510609156.4A Pending CN105241782A (en) | 2015-09-22 | 2015-09-22 | Detection method and apparatus for penetration crack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290719A (en) * | 2016-07-27 | 2017-01-04 | 贵州遵义铭东商贸有限公司 | A kind of waterproof material leakage detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2483382A1 (en) * | 2004-10-01 | 2006-04-01 | Bruce Johnson | System for the transfer and detection of gas dissolved in fluid under pressure |
| CN1804577A (en) * | 2004-12-21 | 2006-07-19 | 通用电气公司 | Method and apparatus for testing air permeable waterproof gloves |
| CN201126422Y (en) * | 2007-09-20 | 2008-10-01 | 许进 | Active pipe breach monitoring device |
| CN102243159A (en) * | 2010-05-10 | 2011-11-16 | 日本碍子株式会社 | Method of detecting damage on saggar |
| CN202903637U (en) * | 2012-09-21 | 2013-04-24 | 中国石油化工股份有限公司 | Portable fracture-cave rock hole permeability test device |
| CN103234859A (en) * | 2013-05-06 | 2013-08-07 | 钟炜铁 | Method for determining deodorization performance of floor drain |
| CN203929340U (en) * | 2014-04-16 | 2014-11-05 | 宁波红杉高新板业有限公司 | A kind of aluminum component leak-testing apparatus |
-
2015
- 2015-09-22 CN CN201510609156.4A patent/CN105241782A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2483382A1 (en) * | 2004-10-01 | 2006-04-01 | Bruce Johnson | System for the transfer and detection of gas dissolved in fluid under pressure |
| CN1804577A (en) * | 2004-12-21 | 2006-07-19 | 通用电气公司 | Method and apparatus for testing air permeable waterproof gloves |
| CN201126422Y (en) * | 2007-09-20 | 2008-10-01 | 许进 | Active pipe breach monitoring device |
| CN102243159A (en) * | 2010-05-10 | 2011-11-16 | 日本碍子株式会社 | Method of detecting damage on saggar |
| CN202903637U (en) * | 2012-09-21 | 2013-04-24 | 中国石油化工股份有限公司 | Portable fracture-cave rock hole permeability test device |
| CN103234859A (en) * | 2013-05-06 | 2013-08-07 | 钟炜铁 | Method for determining deodorization performance of floor drain |
| CN203929340U (en) * | 2014-04-16 | 2014-11-05 | 宁波红杉高新板业有限公司 | A kind of aluminum component leak-testing apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290719A (en) * | 2016-07-27 | 2017-01-04 | 贵州遵义铭东商贸有限公司 | A kind of waterproof material leakage detection device |
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Application publication date: 20160113 |