CN110954271A - Plugging device and method for air tightness test of machine body - Google Patents
Plugging device and method for air tightness test of machine body Download PDFInfo
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- CN110954271A CN110954271A CN201811134339.5A CN201811134339A CN110954271A CN 110954271 A CN110954271 A CN 110954271A CN 201811134339 A CN201811134339 A CN 201811134339A CN 110954271 A CN110954271 A CN 110954271A
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- 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
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the related field of air tightness tests, and discloses a plugging device and a plugging method for an air tightness test of a machine body, wherein the device comprises: the two first sealing pieces are respectively clung to two sides of the hole to be plugged of the machine body and used for sealing the hole to be plugged; the two clamping plates are respectively arranged on one sides of the two first sealing elements far away from the hole to be plugged; the two second sealing pieces are respectively arranged on one sides of the two clamping plates, which are far away from the first sealing piece; and the fastener penetrates through the first sealing element, the clamping plate and the second sealing element on two sides of the hole to be blocked and clamps and fixes the first sealing element, the clamping plate and the second sealing element on two sides of the hole to be blocked. Through hugging closely first sealing member in the both sides in the shutoff hole of treating of fuselage to press from both sides the first sealing member of both sides tightly in treating shutoff hole both sides through fastener, splint, can effectively realize treating the sealed in shutoff hole, and be applicable to treating the shutoff hole of any shape, also be applicable to treating the shutoff hole in any aperture moreover, effectively improve fuselage air tightness test's reliability and accuracy nature.
Description
Technical Field
The invention relates to the field related to air tightness tests, in particular to a plugging device and a plugging method for an air tightness test of a machine body.
Background
After the butt joint of the main structure of the airplane body is completed, in the process of carrying out the air tightness test of the airplane body, because the airplane system parts are not installed temporarily, a plurality of system part through holes with different sizes are formed in the main structure of the airplane body. The main purpose of the air tightness test of the fuselage is to verify whether the air tightness of the structure of the fuselage section meets the engineering requirements, and if the leakage amount of the installed system parts is not in the inspection range, the default leakage amount is zero, namely the air tightness meets the engineering requirements.
For the normal operation of better assurance airtight test, field operation personnel usually take the mode that toper rubber blockked up the shutoff hole to system spare clearing hole shutoff before carrying out fuselage airtight test, because system clearing hole quantity is many, its mainly including irregular shape system spare clearing hole such as round hole and D type hole, irregular shape system spare clearing hole such as the unable complete shutoff D type hole of toper rubber stopper leads to fuselage airtight test to receive the influence.
In addition, the aperture of the most system spare through hole of aircraft fuselage does not exceed 50mm, therefore can block up the shutoff through rubber, but to the through-hole that aperture exceeds 50mm on the fuselage, because the total resultant force direction that the rubber choking received is outside, the size equals 8.27psi pressure differential and multiplies the hole area, the rubber choking can receive bigger resultant force, and fuselage trompil department skin thickness is about 2-4mm (partial trompil department is composite material, thickness is thinner), belong to non-load-carrying structure, if still adopt the annular line contact sealing mode between rubber choking and the fuselage structure, very easily lead to the deformation of skin annular opening part, damage fuselage body structure. And the rubber material itself contains a certain amount of deformation, with the risk of popping out of the fuselage in the event of excessive pressure differences.
Disclosure of Invention
The invention aims to provide a plugging device and a plugging method for an air tightness test of a machine body, which can effectively plug system component through holes with irregular shapes such as D-shaped holes and the like on the machine body and improve the reliability and the accuracy of the air tightness test of the machine body.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a fuselage air-tight test plugging device, includes:
the two first sealing pieces are respectively clung to two sides of the hole to be sealed of the machine body and used for sealing the hole to be sealed;
the two clamping plates are respectively arranged on one sides of the two first sealing elements, which are far away from the hole to be plugged;
the two second sealing pieces are respectively arranged on one sides of the two clamping plates, which are far away from the first sealing piece;
and the fastener penetrates through the first sealing element, the clamping plate and the second sealing element on two sides of the hole to be blocked and clamps and fixes the first sealing element, the clamping plate and the second sealing element on two sides of the hole to be blocked.
Preferably, the first sealing member and the second sealing member are both rubber pads.
Preferably, the first sealing element is a rubber pad made of a flexible material.
Preferably, a gap between the first sealing element and the fuselage is coated with a sealant.
Preferably, the surfaces of the body and the first sealing element, which are attached to the hole to be plugged, are coated with a release agent.
Preferably, the fastening member includes a bolt and a nut, and the bolt passes through the first sealing member, the clamping plate, and the second sealing member on both sides of the hole to be plugged and is fixed by the nut.
The invention also provides a plugging method of the plugging device for the air tightness test of the fuselage, which comprises the following steps:
a second sealing element, a clamping plate and a first sealing element are sequentially arranged in a penetrating manner through a fastening piece;
the method comprises the following steps that a fastener penetrates through a hole to be plugged from one side of a machine body, and another first sealing element, a clamping plate and a second sealing element are sequentially arranged on the other side of the machine body in a penetrating mode;
and locking a fastener, and clamping and fixing the first sealing element, the clamping plate and the second sealing element on two sides of the hole to be blocked so that the first sealing element seals the hole to be blocked, and the second sealing element seals the connecting position of the fastener and the clamping plate.
Preferably, the method further comprises the following steps:
and coating a release agent on the surface of the first sealing element attached to the hole to be blocked and on the periphery of the hole to be blocked of the machine body.
Preferably, the method further comprises the following steps: and coating a sealant at a gap between the first sealing element and the machine body.
Preferably, the method further comprises the following steps: the sealing device for the air tightness test of the machine body is installed from the inside to the outside of the machine body.
The invention has the beneficial effects that: through hugging closely first sealing member in the both sides in the shutoff hole of treating of fuselage to press from both sides the first sealing member of both sides tightly in treating shutoff hole both sides through fastener, splint, can effectively realize treating the sealed in shutoff hole, and be applicable to treating the shutoff hole of any shape, also be applicable to treating the shutoff hole in any aperture moreover, can effectively improve fuselage airtight test's reliability and accuracy nature, and can not damage the fuselage. In addition, through the clearance seal between second sealing member with fastener and the splint, the first sealing member of cooperation further makes and treats that the shutoff hole is sealed completely, has improved the experimental effect of fuselage airtightness.
Drawings
FIG. 1 is a schematic structural diagram of a plugging device for a fuselage air-tightness test of the invention;
FIG. 2 is an exploded schematic view of the plugging device for the fuselage air-tightness test of the invention;
FIG. 3 is a schematic diagram of the sealing device for the airtightness test of the fuselage according to the present invention in cooperation with a hole to be sealed of the fuselage;
fig. 4 is a flow chart of the plugging method of the plugging device for the fuselage airtightness test.
In the figure:
1. a first seal member; 2. a splint; 3. a second seal member; 4. a bolt; 5. a nut; 6. a fuselage.
Detailed Description
The technical scheme of the invention is further explained by a specific embodiment formula in combination with the attached drawings.
The invention provides a plugging device for a fuselage air-tightness test, which comprises two first sealing parts 1, two clamping plates 2, two second sealing parts 3 and a fastener, wherein the fastener penetrates through the two first sealing parts 1, the two clamping plates 2 and the two second sealing parts 3 and clamps and fixes the two first sealing parts 1, the two clamping plates 2 and the two second sealing parts 3, as shown in figures 1 to 3, wherein:
referring to fig. 3, the two first sealing members 1 are respectively tightly attached to two sides of a hole (not shown in the figure) to be plugged of the machine body 6, that is, the first sealing members 1 are tightly attached to two sides of the hole to be plugged, and the first sealing members 1 can seal the hole to be plugged. In this embodiment, the shape of the hole to be plugged of the above-mentioned fuselage 6 can be any shape, such as a round hole, a D-shaped hole or other irregularly shaped holes, and the aperture of the hole to be plugged can be any size, that is, the first sealing element 1 of this embodiment can all realize the sealing of the hole to be plugged of each shape and various apertures, and effectively improve the reliability and accuracy of the fuselage airtight test. As shown in fig. 2, the surface area of the first sealing element 1 is larger than the area of the hole to be plugged, so that the hole to be plugged can be completely covered, and the hole to be plugged can be sealed.
Further, in this embodiment, above-mentioned first sealing member 1 can be the rubber pad, and preferred, first sealing member 1 is the rubber pad that flexible material made, the rubber pad of making through flexible material, when waiting to block up the too big rivet that exists in hole aperture, lead to waiting to block up unevenness around the hole, or when waiting to block up 6 position unevenness on the hole around, the rubber pad that flexible material made hugs closely when waiting to block up the hole, can paste the position of unevenness through self deformation, and then guarantee that any state (unevenness or have rivet or other circumstances) on the fuselage 6 treat that the shutoff hole homoenergetic is sealed completely. The first sealing member 1 may be circular, rectangular or the same shape as the hole to be plugged.
In this embodiment, in order to further improve the sealing effect, a sealant is coated on the gap between the first sealing element 1 and the machine body 6, so that the gap between the first sealing element 1 and the machine body 6 is also sealed, thereby improving the effect of the machine body airtight test.
In consideration of the fact that the sealant is coated and is not easy to remove after the test is finished, the release agent is coated on the surface of the machine body 6 and the surface of the first sealing element 1 attached to the hole to be plugged. Through coating the release agent, can separate fuselage 6, first sealing member 1 and sealed glue for after the experiment, the sealed glue of comparatively easy peeling off, and can not influence this embodiment fuselage air tightness test plugging device's reuse. In addition, through coating the release agent, can also scribble the position of fuselage 6 surface unevenness flat, be favorable to first sealing member 1 to treat the high sealed in shutoff hole.
Above-mentioned two splint 2 set up respectively and keep away from the one side of treating the shutoff hole at two first sealing member 1, and two splint 2 are used for pressing from both sides two first sealing member 1 tightly for the hole is waited to block up in first sealing member 1 is sealed. The shape of the two clamping plates 2 can be circular, rectangular or the same shape as the hole to be plugged.
The two second sealing members 3 are respectively disposed on one sides of the two clamping plates 2 far away from the first sealing member 1, and are used for sealing a gap between the fastening member and the clamping plates 2. Through the clearance seal between second sealing member 3 with fastener and splint 2, the first sealing member 1 of cooperation further makes and treats that the shutoff hole is sealed completely, has improved the effect of fuselage airtight test.
Specifically, the second sealing member 3 may also be a rubber pad, and a rubber pad made of a flexible material may also be used. Sealing between the fastener and the clamping plate 2 is achieved by a rubber gasket. In this embodiment, the surface area of the second seal 3 is larger than the cross-sectional area of the fastener and should be smaller than the surface area of the clamping plate 2. On the premise of not increasing the cost, the sealing between the clamping plate 2 and the fastener is effectively realized.
The fastener comprises a bolt 4 and a nut 5, wherein the bolt 4 is a hexagon socket head cap screw 4 so as to facilitate screwing of an operator and installation in a narrow space. The bolt 4 sequentially penetrates through the second sealing element 3, the clamping plate 2, the first sealing element 1, the clamping plate 2 and the second sealing element 3 on one side of the to-be-plugged hole, the to-be-plugged hole is fixed through the nut 5, the first sealing element 1, the clamping plate 2 and the second sealing element 3 on two sides of the to-be-plugged hole are clamped tightly through the screwed nut 5, and effective sealing of the to-be-plugged hole is achieved.
The invention also provides a plugging method of the plugging device for the fuselage air-tightness test, which comprises the following steps of:
and S10, sequentially penetrating a second sealing element 3, a clamping plate 2 and a first sealing element 1 through a fastener.
Before this step, a release agent is coated on the surfaces of the two first sealing elements 1 to be attached to the hole to be sealed and the peripheries of the two sides of the hole to be sealed of the machine body 6.
A second sealing element 3, a clamping plate 2 and the first sealing element 1 are then inserted through the screw 4 of the fastening element for subsequent sealing of the hole to be sealed.
And S20, a fastener penetrates through the hole to be plugged from one side of the machine body 6, and another first sealing element 1, a clamping plate 2 and a second sealing element 3 are sequentially arranged on the other side of the machine body 6 in a penetrating manner.
After one of the first sealing member 1, the clamping plate 2 and the second sealing member 3 is pierced in step S10, the bolt 4 of the fastener is passed through the hole to be plugged from the inside of the body 6, and one end of the bolt 4 is made to protrude out of the hole to be plugged. And then, another first sealing element 1, the clamping plate 2 and the second sealing element 3 are sequentially arranged at one end of the bolt 4 extending out of the hole to be blocked in a penetrating manner along the direction away from the hole to be blocked.
And S30, locking the fastener, and clamping and fixing the first sealing element 1, the clamping plate 2 and the second sealing element 3 on two sides of the hole to be sealed so that the first sealing element 1 seals the hole to be sealed, and the second sealing element 3 seals the connecting position of the fastener and the clamping plate 2.
That is, after step S20, the nut 5 is screwed on the bolt 4, and the first seal member 1, the clamping plate 2, and the second seal member 3 on both sides of the hole to be plugged are clamped and fixed by the nut 5 and the bolt 4. At this time, the first sealing element 1 seals the hole to be plugged, and the second sealing element 3 seals the connecting position of the bolt 4 of the fastener and the clamping plate 2.
After the nut 5 is tightened, a sealant may be applied to a gap between the first sealing member 1 and the body 6, and the gap between the first sealing member 1 and the body 6 may be sealed by applying the sealant.
After the air tightness test of the machine body is finished, the nut 5 is unscrewed, the plugging device for the air tightness test of the machine body can be taken down to be separated from the machine body 6, the sealant can easily fall off due to the action of the release agent, and the machine body 6 and the plugging device for the air tightness test of the machine body cannot be damaged.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a fuselage air-tight test plugging device which characterized in that includes:
the two first sealing pieces (1) are respectively clung to two sides of a hole to be sealed of the machine body (6) and used for sealing the hole to be sealed;
the two clamping plates (2) are respectively arranged on one sides of the two first sealing elements (1) far away from the hole to be plugged;
the two second sealing pieces (3) are respectively arranged on one sides of the two clamping plates (2) far away from the first sealing piece (1);
and the fastener penetrates through the first sealing element (1), the clamping plate (2) and the second sealing element (3) on two sides of the hole to be blocked and clamps and fixes the first sealing element (1), the clamping plate (2) and the second sealing element (3) on two sides of the hole to be blocked.
2. The fuselage air-tightness test plugging device according to claim 1, characterized in that the first sealing element (1) and the second sealing element (3) are both rubber pads.
3. The fuselage air-tightness test plugging device according to claim 1, characterized in that the first sealing element (1) is a rubber pad made of a flexible material.
4. The fuselage airtightness test plugging device according to any one of claims 1 to 3, wherein a gap between the first sealing member (1) and the fuselage (6) is coated with a sealant.
5. The fuselage airtightness test plugging device according to claim 4, wherein the surfaces of the fuselage (6) and the first sealing member (1) attached to the hole to be plugged are coated with a release agent.
6. The fuselage air-tightness test plugging device according to claim 1, characterized in that the fastener comprises a bolt (4) and a nut (5), and the bolt (4) passes through the first sealing element (1), the clamping plate (2) and the second sealing element (3) on both sides of the hole to be plugged and is fixed by the nut (5).
7. The plugging method of the plugging device for the fuselage air tightness test according to any one of claims 1 to 6, characterized by comprising the following steps:
a second sealing element (3), a clamping plate (2) and a first sealing element (1) are sequentially arranged in a penetrating way through a fastening piece;
a fastener penetrates through a hole to be blocked from one side of a machine body (6), and another first sealing element (1), a clamping plate (2) and a second sealing element (3) are sequentially arranged on the other side of the machine body (6) in a penetrating manner;
locking a fastener, and clamping and fixing the first sealing element (1), the clamping plate (2) and the second sealing element (3) on two sides of the hole to be sealed so that the first sealing element (1) seals the hole to be sealed, and the second sealing element (3) seals the connecting position of the fastener and the clamping plate (2).
8. The occlusion method of claim 7, further comprising:
and coating a release agent on the surface of the hole to be blocked, which is attached to the first sealing element (1), and the periphery of the hole to be blocked of the machine body (6).
9. The occlusion method of claim 8, further comprising: and coating a sealant at a gap between the first sealing element (1) and the machine body (6).
10. The occlusion method of claim 7, further comprising: the sealing device for the air tightness test of the machine body is installed from the inside to the outside of the machine body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134339.5A CN110954271A (en) | 2018-09-27 | 2018-09-27 | Plugging device and method for air tightness test of machine body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134339.5A CN110954271A (en) | 2018-09-27 | 2018-09-27 | Plugging device and method for air tightness test of machine body |
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| CN110954271A true CN110954271A (en) | 2020-04-03 |
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| CN201811134339.5A Pending CN110954271A (en) | 2018-09-27 | 2018-09-27 | Plugging device and method for air tightness test of machine body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112326150A (en) * | 2020-11-05 | 2021-02-05 | 中航通飞华南飞机工业有限公司 | Air tightness test device and method for airplane body structure |
| CN114518200A (en) * | 2021-12-22 | 2022-05-20 | 苏州众犇汽车部件有限公司 | Sealing device for air tightness detection of automobile parts |
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| CN114518200B (en) * | 2021-12-22 | 2024-07-09 | 苏州众犇汽车部件有限公司 | Sealing device for detecting air tightness of automobile parts |
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Application publication date: 20200403 |