CN105952890A - Box-type fragile protective cover structure with large positive-negative pressure difference - Google Patents
Box-type fragile protective cover structure with large positive-negative pressure difference Download PDFInfo
- Publication number
- CN105952890A CN105952890A CN201610487998.1A CN201610487998A CN105952890A CN 105952890 A CN105952890 A CN 105952890A CN 201610487998 A CN201610487998 A CN 201610487998A CN 105952890 A CN105952890 A CN 105952890A
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- China
- Prior art keywords
- negative pressure
- end frame
- lid
- protection cap
- positive
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- Legal status (The legal status 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 status listed.)
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Classifications
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- 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
- F16J13/00—Covers or similar closure members for pressure vessels in general
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
The invention discloses a box-type fragile protective cover structure with a large positive-negative pressure difference. The box-type fragile protective cover structure with the large positive-negative pressure difference comprises an end frame; a cover body is arranged on one side of the end frame and is an elliptical face protruding outwards; a convex face and a concave face of the elliptical face are used for bearing positive pressure and negative pressure correspondingly; and the positive pressure is larger than three times the negative pressure. A plurality of reinforcement layers thickening gradually are symmetrically arranged between the center of the concave face of the cover body and the bottom side close to the end frame. First weakening grooves, second weakening grooves and third weakening grooves are formed in the diagonals of the internal concave face of the cover body, the four lateral sides of the end frame and the peripheral corners of the end frame correspondingly, and are different in depth. The box-type fragile protective cover structure with the large positive-negative pressure difference solves the design problem of a fragile protective cover structure with the positive pressure being larger than three times the negative pressure.
Description
Technical field
The present invention relates to frangible protection cap technical field, particularly relate to a kind of frame type frangible guarantor of big positive and negative pressure
Cover-protecting structure.
Background technology
Traditional system having frangible protection cap uses mechanical system and opens frangible protection cap, blasting method
Open frangible protection cap, as long as to meet negative pressure index the most permissible for the design of this frangible protection cap, design simply,
But whole system operation is complicated, poor reliability.For making faster system response, simple to operate, modern frangible protection
Lid uses certain pressure high-speed gas to open Fragile cap, but this pressure has certain limit, namely wants
Ask frangible protection cap broken under limited positive pressure, but frangible in the case of negative pressure is more than malleation certain value
Protection cap stands intact, if within requiring that negative pressure is malleation 2 times, the design of frangible protection cap is easier to, at present
The most extensively apply, but require that design negative pressure is that malleation 3 is above current frangible protection cap design challenges again,
Frangible protection cap structure must be carried out innovative design.
Summary of the invention
The present invention mainly solves the technical problem in the presence of prior art, thus it is positive and negative to provide one to meet
The big positive and negative pressure of the frame type frangible protection cap structure of the requirement that pressure difference is more than 3 times.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals:
The big positive and negative pressure of the frame type frangible protection cap structure that the present invention provides, including end frame, described end frame
Side is provided with lid, and described lid is ellipsoid outwardly, and the convex surface of described ellipsoid and concave surface are respectively
For bearing malleation and negative pressure, described malleation is more than three times of described negative pressure, wherein, the concave surface of described lid
Center is provided with multiple enhancement Layer gradually thickeied to symmetrical near the bottom side of described end frame, described lid interior
At concave surface diagonal angle, portion, on four sides of described end frame, on surrounding corner, it is respectively equipped with the first to the 3rd reduction
Groove, the degree of depth of described first to the 3rd reduction groove is different.
Further, described lid contacts with described end frame on simultaneously and is additionally provided with supporting surface, and described end frame
On be additionally provided with press box, described press box for being locked at described end frame by the supporting surface of described lid.
Further, height and the thickness of described lid is respectively 195mm and 29mm.
Further, first to the 3rd degree of depth weakening groove is respectively 10mm, 6mm and 19mm, with
And described first, second weaken groove trench angles be 60 °
Further, described malleation and negative pressure are respectively 90kPa and 280kPa.
The beneficial effects of the present invention is: by lid being designed to ellipsoid outwardly, change gas
Body pressure is at the convex surface action mode of ellipsoid, the beneficially uniform force of lid；And the concave surface at lid
Center is provided with, to the bottom side near end frame, the enhancement Layer gradually thickeied, and plays anti-suction function, by test aftereffect
Fruit substantially, meanwhile, weakens groove by design first to the 3rd, it is ensured that lid is edge under positive pressure
First to the 3rd weakens groove crushes.The present invention solves positive/negative-pressure and differs the frangible protection cap knot of more than 3 times
Structure design challenges.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the big positive and negative pressure of the frame type frangible protection cap structure of the present invention；
Fig. 2 is the left view of the big positive and negative pressure of the frame type frangible protection cap structure of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail so that advantages of the present invention and
Feature can be easier to be readily appreciated by one skilled in the art, thus makes protection scope of the present invention apparent
Clear and definite defines.
Refering to shown in Fig. 1-2, the big positive and negative pressure of the frame type frangible protection cap structure of the present invention, including end frame 1,
The side of end frame 1 is provided with lid 2, and lid 2 is ellipsoid outwardly, the convex surface of ellipsoid and concave surface
Being respectively used to bear malleation and negative pressure, malleation is more than three times of negative pressure, and wherein, the concave surface center of lid 2 is extremely
Symmetrical near the bottom side of end frame 1 it is provided with multiple enhancement Layer 3 gradually thickeied, the inner concave surface pair of lid 2
At angle, end frame 1 four sides on, be respectively equipped with on surrounding corner 4 first to the 3rd reduction groove (5-7),
The degree of depth of the first to the 3rd reduction groove (5-7) is different.
The present invention, by lid 2 is designed to ellipsoid outwardly, changes gas pressure at ellipsoid
Convex surface action mode, the beneficially uniform force of lid；And at the center of lid 2 near end frame 1
Bottom side be provided with the enhancement Layer 3 gradually thickeied, play anti-suction function, obvious by effect after test, meanwhile,
By design first to the 3rd reduction groove (5-7), it is ensured that lid 2 under positive pressure along first to
3rd weakens groove (5-7) crushes.The present invention solves positive/negative-pressure and differs the frangible protection cap knot of more than 3 times
Structure design challenges.
Specifically, in order to improve the fastness that lid 2 is connected with end frame 1, it is to avoid get loose, lid 2 and end
Frame 1 contacts to be additionally provided with on simultaneously on supporting surface 8, and end frame 1 and is additionally provided with press box 9, and press box 9 will be for covering
The supporting surface 8 of body 2 is locked on end frame.Wherein, locking mode can be adopted and be tightened by bolts, convenient dismounting and
Install.
In the present invention, height and the thickness of lid 2 are respectively 195mm and 29mm, (namely ellipse side
Parameter a=500mm in journey, b=360mm).First to the 3rd degree of depth weakening groove (5-7) is respectively
10mm, 6mm and 19mm, and first, second weaken groove (5,6) trench angles be 60 °,
Malleation and negative pressure are respectively 90kPa and 280kPa.
The elliptic arc equation such as formula (1) of lid 2.
Verified by ground slow test, be specifically divided into positive pressure test and negative pressure test.Result of the test meets to be wanted
Ask.
Above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto,
Any change expected without creative work or replacement, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims are limited.
Claims (5)
1. the big positive and negative pressure of a frame type frangible protection cap structure, including end frame, the side of described end frame is provided with lid, it is characterized in that, described lid is ellipsoid outwardly, the convex surface of described ellipsoid and concave surface are respectively used to bear malleation and negative pressure, described malleation is more than three times of described negative pressure, wherein, the concave surface center of described lid is provided with multiple enhancement Layer gradually thickeied to symmetrical near the bottom side of described end frame, at the inner concave surface diagonal angle of described lid, on four sides of described end frame, the first to the 3rd reduction groove it is respectively equipped with on surrounding corner, the degree of depth of described first to the 3rd reduction groove is different.
2. the big positive and negative pressure of frame type frangible protection cap structure as claimed in claim 1; it is characterized in that; described lid contacts with described end frame to be additionally provided with on supporting surface, and described end frame on simultaneously and is additionally provided with press box, and described press box for being locked at described end frame by the supporting surface of described lid.
3. the big positive and negative pressure of frame type frangible protection cap structure as claimed in claim 2, it is characterised in that height and the thickness of described lid are respectively 195mm and 29mm.
4. the big positive and negative pressure of frame type frangible protection cap structure as claimed in claim 3, it is characterised in that first to the 3rd degree of depth weakening groove is respectively 10mm, 6mm and 19mm, and described first, second trench angles weakening groove is 60 °.
5. the big positive and negative pressure of frame type frangible protection cap structure as claimed in claim 4, it is characterised in that described malleation and negative pressure are respectively 90kPa and 280kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610487998.1A CN105952890B (en) | 2016-06-29 | 2016-06-29 | A kind of frangible protection cap structure of the big positive and negative pressure of frame type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610487998.1A CN105952890B (en) | 2016-06-29 | 2016-06-29 | A kind of frangible protection cap structure of the big positive and negative pressure of frame type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105952890A true CN105952890A (en) | 2016-09-21 |
| CN105952890B CN105952890B (en) | 2018-01-30 |
Family
ID=56902400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610487998.1A Active CN105952890B (en) | 2016-06-29 | 2016-06-29 | A kind of frangible protection cap structure of the big positive and negative pressure of frame type |
Country Status (1)
| Country | Link |
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| CN (1) | CN105952890B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4498368A (en) * | 1983-10-06 | 1985-02-12 | The United States Of America As Representedby The Secretary Of The Navy | Frangible fly through diaphragm for missile launch canister |
| JP2002022396A (en) * | 2000-07-07 | 2002-01-23 | Mitsubishi Heavy Ind Ltd | Rear caver guide device and canister for flying object |
| TW200622180A (en) * | 2004-12-22 | 2006-07-01 | Chung Shan Inst Of Science | Structure of front end cover made of fiber reinforced plastics (FRP) |
| CN1844839A (en) * | 2006-04-30 | 2006-10-11 | 南京航空航天大学 | Integral impacting type composite canister cover |
| CN203769488U (en) * | 2014-02-25 | 2014-08-13 | 郑州宇通客车股份有限公司 | School bus emergency door and door lock externally-opening protection cover thereof |
| CN205780831U (en) * | 2016-06-29 | 2016-12-07 | 贵州航天天马机电科技有限公司 | A kind of protection cap |
-
2016
- 2016-06-29 CN CN201610487998.1A patent/CN105952890B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4498368A (en) * | 1983-10-06 | 1985-02-12 | The United States Of America As Representedby The Secretary Of The Navy | Frangible fly through diaphragm for missile launch canister |
| JP2002022396A (en) * | 2000-07-07 | 2002-01-23 | Mitsubishi Heavy Ind Ltd | Rear caver guide device and canister for flying object |
| TW200622180A (en) * | 2004-12-22 | 2006-07-01 | Chung Shan Inst Of Science | Structure of front end cover made of fiber reinforced plastics (FRP) |
| CN1844839A (en) * | 2006-04-30 | 2006-10-11 | 南京航空航天大学 | Integral impacting type composite canister cover |
| CN203769488U (en) * | 2014-02-25 | 2014-08-13 | 郑州宇通客车股份有限公司 | School bus emergency door and door lock externally-opening protection cover thereof |
| CN205780831U (en) * | 2016-06-29 | 2016-12-07 | 贵州航天天马机电科技有限公司 | A kind of protection cap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105952890B (en) | 2018-01-30 |
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