CN106969142B - A kind of pressure vessel sealing locking structure - Google Patents
A kind of pressure vessel sealing locking structure Download PDFInfo
- Publication number
- CN106969142B CN106969142B CN201710341275.5A CN201710341275A CN106969142B CN 106969142 B CN106969142 B CN 106969142B CN 201710341275 A CN201710341275 A CN 201710341275A CN 106969142 B CN106969142 B CN 106969142B
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- CN
- China
- Prior art keywords
- head cover
- barrel end
- pressure vessel
- sealing
- shearing resistance
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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
- F16J13/02—Detachable closure members; Means for tightening closures
-
- 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
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The present invention relates to a kind of pressure vessel sealing locking structures.The second annular recess that the present invention is included in the first annular recess opened up in the barrel end circumferential direction of pressure vessel and is opened up in the head cover circumferential direction of pressure vessel, both the first annular recess and second annular recess notch is opposite after head cover is mounted on barrel end and Formation cross-section is circular annular channel, filled with so that the shearing resistance steel ball that barrel end is locked with head cover realization in annular channel.The present invention changes previous sealing locking structure, and the pattern for using shearing resistance steel ball is locked, and the present invention greatly reduces the weight of barrel end and head cover, reduces the cost of container, safety in operation is good, remarkable in economical benefits.The present invention solve the problems, such as conventional pressure vessel sealing locking structure shearing resistance component in use easily kill, greatly reduce unlatching difficulty, operating cost is greatly reduced, and good economy performance.
Description
Technical field
The invention belongs to design of pressure vessels and manufacturing technology field, are specifically related to a kind of pressure vessel dense block tight knot
Structure.
Background technology
Pressure vessel in the design of pressure vessel for design pressure not higher than 35MPa recommends the sealing structure selected to have
The patterns such as metal flat gasket, biconical ring seal, wood closure, Cachaly seal, the sealing of clip fast-open type.High-pressure bottle is set
It is that non-bolt couples pattern to recommend to open class sealing structure in meter soon, couple comprising the connection of clamp connection, shearing bolt, shear-pin and
The patterns such as anti-shear ring connection.
High parameter is constantly moved towards in the development of pressure vessel in recent years, and the sealing structure of shearing resistance connection is selected to be acted in pressure
Lower shearing resistance component is easily killed, and not easy to remove, operational efficiency is low.And therefore the part material thickness also greatly increases；Material
The thickness of material is bigger higher to manufacturing inspection requirement, and safety is then lower, easily causes security risk, and the utilization rate of material is not
It is high.
The sealing locking structure of high-pressure bottle designs the coarse scale structures such as bolt or the clip that major diameter need to be used toward contact.
For the coarse scale structures high-pressure bottle when being turned on and off, since the heaviness of equipment can not carry out manual operations, it is necessary to
Using hydraulic pressure (machinery) cocking mechanism or rotating mechanism etc., and then mating corresponding hydraulic pressure (machinery) system etc., it considerably increases
The construction cost of high-pressure bottle.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of pressure vessel sealing locking structure, which solves height
Pressure vessel barrel end couples the problem that switch is difficult and pressure vessel cost is high, weight is big with head cover.
In order to achieve the object of the present invention, present invention employs following technical schemes：
It is cyclic annular to be included in first opened up in the barrel end circumferential direction of pressure vessel for a kind of pressure vessel sealing locking structure
Groove and the second annular recess opened up in the head cover circumferential direction of pressure vessel, the head cover are mounted on the barrel end
Both first annular recess and second annular recess notch are opposite afterwards and to form cross section be circular annular channel, described
Filled with so that the barrel end and head cover realize the shearing resistance steel ball of locking in annular channel.
Further, the head cover peripheral surface is bonded with the barrel end internal face, first annular recess section
For semicircle and it is located at barrel end internal face, second annular recess section is semicircle and is located at head cover peripheral surface, institute
State offered between barrel end internal face and head cover peripheral surface communicated with the annular channel into ball, the barrel end
Side offers the spherical cavity being connected to the annular channel, the cross section of the diameter and the annular channel of the shearing resistance steel ball
Diameter coincide substantially.
Further, the inside of top cover face is fixed with the self-tightening sealing portion with the barrel end inner wall circumferential seal
Part.
Further, the head cover is equipped with the limiting component for realizing location and installation, the limit with the barrel end
Component includes the limit hole being located on the head cover and the positioning pin on barrel end, and the head cover is mounted on cylinder
The positioning pin passes through the limit hole when on end.
Further, described to be obliquely installed into ball towards the annular channel, the spherical cavity is towards under barrel end
Side is obliquely installed.
Further, the shearing resistance that the barrel end side offers multiple arranged for interval and communicated with the annular channel
Steel ball removal hole.
Further, the self-tightening sealing component includes the sealing face ring being fixed on the inside of top cover face, described close
Cover ring peripheral surface is equipped with the O-ring seals and spring sealed that sealing cooperation is circumferentially formed with the barrel end internal face
Circle.
The beneficial effects of the present invention are：
(1) present invention change flange connection, clamp connection, shearing bolt that previous sealing locking structure uses couple,
Shear-pin couples and the locking mechanisms patterns such as anti-shear ring connection, and the pattern for using shearing resistance steel ball is locked, this is sealing
Locking provides a kind of new mode, and the weight of barrel end and head cover greatly reduces in sealing locking structure of the present invention, drop
The low cost of container, safety in operation is good, remarkable in economical benefits.
(2) shearing resistance steel ball of the present invention and it is mating into ball, spherical cavity also solve conventional high-tension pressure vessel sealing
The unlatching difficult problem of locking mechanism, the invention enables pressure vessels top covers to be easy to be opened and closed, and reduces operation difficulty
And good economy performance, the present invention, which has abandoned the design of common high-pressure bottle, needs mating hydraulic pressure (or machinery) auxiliary body etc., operation at
Originally it is greatly reduced.
It is described to be used to fill shearing resistance steel ball into the annular channel after head cover is mounted on barrel end into ball,
It can be used for auxiliary when head cover needs to open the shearing resistance steel ball is discharged by the spherical cavity, the invention enables pressure vessels
Barrel end and head cover be easy to be mounted locking, fixed and open.
(3) self-tightening sealing component of the present invention solves on manufacturing and designing for axial displacement sealing problem, close
It seals effect to protrude, it is ensured that the safety and reliability of pressure vessel operation.
(4) head cover is installed to according to design installation dimension on barrel end by the limiting component auxiliary, it is ensured that top
The smooth installation of lid and self-tightening sealing component avoids head cover from being circumferentially rotated along barrel end or position radially occurs along barrel end
Offset can also assist the smooth dismounting of head cover and self-tightening sealing component, ensure the self-tightening sealing component and cylinder after installing repeatedly
The reliability of body inner wall of end circumferential seal and safety.
(5) pressure vessel sealing locking structure of the present invention can greatly reduce the wall thickness of barrel end so that for making
The thickness restricted problem of the plank or forging of making barrel end is alleviated, corresponding to make pressure under conditions of thickness is certain
The high parameter of container is achieved.Therefore, from the saving material of high-pressure bottle, convenient opening and closing, investment cost, security reliability
Etc. various aspects account for, pressure vessel sealing locking structure of the present invention can meet above-mentioned requirements.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is self-tightening sealing modular construction schematic diagram.
The meaning marked in attached drawing is as follows：
1- barrel end 2- self-tightening sealing component 3- shearing resistance steel ball 4- head cover 5- limiting components
6- seals face ring 9-O shape sealing rings into ball 7- spherical cavities 8-
The spring sealed circle 11- filler rings A- annular channels of 10-
Specific implementation mode
More specific detail is made to technical solution of the present invention with reference to embodiment：
The present invention is included in the first annular recess opened up in 1 circumferential direction of barrel end of pressure vessel and in pressure vessel
4 circumferential direction of head cover on the second annular recess for opening up, the head cover 4 is described first cyclic annular after being mounted on the barrel end 1
Both groove and the second annular recess notch is opposite and to form cross section be circular annular channel A, is filled out in the annular channel A
Filled with the barrel end 1 is made the shearing resistance steel ball 3 locked is realized with head cover 4.The present invention changes previous sealing locking structure
The locking mechanisms patterns such as flange connection, clamp connection, shearing bolt connection, shear-pin connection and the anti-shear ring connection of use, and
The pattern for using shearing resistance steel ball 3 is locked, this provides a kind of new mode, present invention sealing for the sealing locking of container
The weight of barrel end 1 and head cover 4 greatly reduces in locking mechanism, reduces the cost of container, and safety in operation is good, economical
Remarkable benefit.
4 peripheral surface of the head cover is closed with 1 inner wall of end face paste of the barrel end, and first annular recess section is half
Round and be located at 1 internal face of barrel end, second annular recess section is semicircle and is located at 4 peripheral surface of head cover, described
Offered between 1 internal face of barrel end and 4 peripheral surface of head cover communicated with the annular channel A into ball 6, the cylinder end
1 side of portion offers the spherical cavity 7 being connected to the annular channel A, the diameter of the shearing resistance steel ball 3 and the annular channel A
Cross-sectional diameter coincide substantially.The shearing section of the shearing resistance steel ball 3 is radial vertical with the barrel end 1.It is described into
Ball 6 is obliquely installed towards the annular channel A, and the spherical cavity 7 is obliquely installed towards 1 side-lower of barrel end.
Shearing resistance steel ball 3 of the present invention and it is mating into ball 6, spherical cavity 7 also solve conventional high-tension pressure vessel sealing
The unlatching difficult problem of locking mechanism, the invention enables pressure vessels top covers to be easy to be opened and closed, and it is difficult can to reduce operation
Degree requires and good economy performance, and the present invention, which has abandoned common high-pressure bottle design, needs mating hydraulic pressure (or machinery) auxiliary body etc.,
Operating cost is greatly reduced.
It is described to be used to fill shearing resistance steel into the annular channel A after head cover 4 is mounted on barrel end 1 into ball 6
Ball 3 can be used for auxiliary when head cover 4 needs to open and the shearing resistance steel ball 3 be discharged by the spherical cavity 7, and the present invention makes
It obtains the barrel end 1 of pressure vessel and head cover 4 is easy to be mounted locking, fix.
The head cover 4 is equipped with the limiting component 5 for realizing location and installation with the barrel end 1, and the limiting component 5 wraps
Limit hole and positioning pin are included, the barrel end 1 is equipped with positioning pin, and the head cover 4 is equipped with limit hole.The limit
The head cover 4 is installed to according to design installation dimension on barrel end 1 by the auxiliary of component 5, it is ensured that head cover 4 and self-tightening sealing component
2 smooth installation can also assist the smooth dismounting of head cover and self-tightening sealing component, head cover 4 is avoided to be circumferentially rotated along barrel end 1
Or along the radial generation position offset of barrel end 1, ensure the self-tightening sealing component 2 and 1 inner wall of barrel end after installing repeatedly
The reliability of circumferential seal and safety.
4 medial surface of the head cover is fixed with the self-tightening sealing component 2 with 1 inner wall circumferential seal of the barrel end.It is described
Self-tightening sealing component 2 includes the sealing face ring 8 for being fixed on 4 medial surface of the head cover, and the ring-type of sealing 8 peripheral surface of face ring is close
The O-ring seals 9 and spring sealed circle 10 that sealing cooperation is circumferentially formed with 1 inner wall of the barrel end are installed in sealing groove.
Self-tightening sealing component 2 of the present invention, which is solved, protrudes axial displacement sealing problem, sealing effect on manufacturing and designing,
Ensure the safety and reliability of pressure vessel operation.
It is installation and the method for dismounting of sealing locking structure of the present invention below：
Step 1：Head cover 4 is installed among barrel end 1 by the auxiliary of limiting component 5, it is ensured that head cover 4 and self-tightening
The smooth installation of seal member 2 ensures the reliable and safe of sealing.
Step 2：Head cover 4 and barrel end 1 are after installation is complete by being opened up into ball 6 between barrel end 1 and head cover 4
Annular channel A in filling shearing resistance steel ball 3, it is desirable that the quantity of filling steel ball 3 is no less than the quantity needed for calculating, and ensures uniform
Distribution.Rear enclosed goal hole 6 is completed in filling, is ensured the stability of shearing resistance steel ball 3 and is prevented shearing resistance steel ball 3 in container operation process
In de- jump, the locking of this sealing locking structure is completed to this, the further work of equipment can be carried out.
Step 3：DE device end, ensure container can with safe opening after carry out the unlatching of this sealing locking structure,
Spherical cavity 7 is opened, it can be by the way that the gap between the removal hole on barrel end 1, barrel end 1 and head cover 4 or goal be arranged
Hole etc. assists mobile shearing resistance steel ball 3 by steel bar, so that all shearing resistance steel balls 3 is removed annular channel A, i.e., dialled by the steel bar
The dynamic shearing resistance steel ball 3 in annular channel A so that shearing resistance steel ball 3 is rolled out from spherical cavity 7.
Step 4：After all shearing resistance steel balls 3 remove annular channel A, by the auxiliary of limiting component 5 by head cover 4 from barrel end
It is removed on 1, that is, completes the unlatching of this sealing locking structure.
The present invention actually use and design process in can also realize shearing resistance steel by adjusting the pattern of annular channel
The automatic disassembling of ball 3 can also preferably assist the installation of head cover 4 and self-tightening sealing component 2 by improveing limiting component 5,
It can also be by improveing into ball 6 and spherical cavity 7 so that the installation and dismounting of shearing resistance steel ball 3 are more convenient.
And in the fabrication process it must also be noted that the manufacturing tolerance of barrel end 1 and 2 fitting surface of head cover 4 and self-tightening sealing component
And cooperation ensures the smooth of head cover 4 by proposing corresponding requirement to the concentricity of mating surface, flatness, verticality and roughness
The reliability of installation and sealing.Need to also by adjusting the annular channel A processed between barrel end 1 and head cover 4 manufacturing tolerance,
The hardness of material hardness and shearing resistance steel ball 3 at channel, come ensure shearing resistance steel ball 3 smooth dismounting and barrel end 1 and head cover 4 it
Between the reliability that couples.
It is the computational methods about the sealing locking structure below, is mainly used for determining that selected shearing resistance steel ball specification is
No satisfaction designs requirement, and further determines that the quantity of required shearing resistance steel ball, and the computational methods include the following steps：
S1, clear design of pressure vessels parameter and shearing resistance steel ball material type；
S2, according to force balance principle, calculate under operating pressure effect needed for minimum sealing force F, calculation formula is as follows：
P is pressure vessel operating pressure in formula, and D is sealing surface diameter；The size of seal contact face D refers to the dense block
The outer diameter of face ring 8 is sealed in locking structure；
S3, minimum sealing force F is calculated by step S2 being averaged to cut and answering for shearing resistance steel ball sectional median plane is calculated
Power τ, calculation formula are as follows：
N is shearing resistance steel ball number in formula, and r is shearing resistance steel ball radius；
Relationship is as follows between S4, circular annular form channel center circular diameter L and shearing resistance steel ball radius r：
π L=2Nr,
S5, the relational expression in step S4 is substituted into step S3, following formula can be obtained：
S6, according to TSG21-2016《Fixed safe technology of pressure vessel Supervision Code》It is required that allowing shear stress that should expire
Sufficient following requirements：
[τ]=σs/ n,
σ in formulasFor the yield stress drop-out value of shearing resistance steel ball material, n values are 2.5~3.5；
S7, the result of calculation of step S5 and the result of calculation of step S6 are compared, such as τ < [τ], then meet requirement,
Otherwise adjusting parameter r is recalculated according still further to above-mentioned steps；
S8, the step S7 result of calculation meet τ < [τ] after, calculate shearing resistance steel ball using the relational expression of step S4
Number, calculation formula are as follows：
It is the number of required shearing resistance steel ball to result of calculation round numbers；
S9, it completes to calculate.
The computational methods determine that design of pressure vessels pressure P, size of seal contact face D, circular annular form channel center circle are straight
Relationship between diameter L and shearing resistance steel ball radius r, the computational methods are to the sealing locking structure of above-mentioned novel pressure container
Critical component shearing resistance steel ball is calculated, and ensure that under design pressure conditioning, and shearing resistance steel ball, which meets design use, to be wanted
It asks, theoretical calculation foundation is provided for the application of such sealing locking structure.The computational methods are for calculating in pressure
Under the effect of Vessel Design pressure, the maximum shear stress that shearing resistance steel ball section is born so that shear stress is less than shearing resistance steel ball
The permission shear stress of material ensures that shearing resistance steel ball will not be sheared rupture under high pressure effect, and selects suitable steel ball number.
The computational methods so that pressure vessel is stable, safe, and meet requirement.In addition the computational methods determine anti-
The formula that the fail-ure criterion foundation and shearing resistance steel ball number of shear-steel ball are selected, additionally provides the basis for selecting for allowing shear stress.
Claims (6)
1. a kind of pressure vessel sealing locking structure, it is characterised in that：It is included in barrel end (1) circumferential direction of pressure vessel and opens
If the first annular recess and the second annular recess for being opened up in head cover (4) circumferential direction of pressure vessel, head cover (4) peace
Both first annular recess and second annular recess notch is opposite after on the barrel end (1) and formation cross section
For circular annular channel
(A), filled with so that the barrel end (1) and head cover (4) realize the shearing resistance steel ball of locking in the annular channel (A)
(3)；Head cover (4) peripheral surface is bonded with the barrel end (1) internal face, and first annular recess section is semicircle
And it is located at barrel end (1) internal face, second annular recess section is semicircle and is located at head cover (4) peripheral surface, described
Offered between barrel end (1) internal face and head cover (4) peripheral surface communicated with the annular channel (A) into ball (6), institute
It states barrel end (1) side and offers the spherical cavity (7) being connected to the annular channel (A), the diameter of the shearing resistance steel ball (3)
It coincide substantially with the cross-sectional diameter of the annular channel (A).
2. pressure vessel sealing locking structure as described in claim 1, it is characterised in that：Head cover (4) medial surface is fixed
There is the self-tightening sealing component (2) with the barrel end (1) inner wall circumferential seal.
3. pressure vessel sealing locking structure as described in claim 1, it is characterised in that：The head cover (4) and the cylinder
End (1) is equipped with the limiting component (5) for realizing location and installation, and the limiting component (5) includes being located on the head cover (4)
Limit hole and the positioning pin on barrel end (1), the head cover (4) are described fixed when being mounted on barrel end (1)
Position pin passes through the limit hole.
4. pressure vessel sealing locking structure as described in claim 1, it is characterised in that：It is described into ball (6) towards described in
Annular channel (A) is obliquely installed, and the spherical cavity (7) is arranged towards barrel end (1) inclined downward.
5. pressure vessel sealing locking structure as described in claim 1, it is characterised in that：The barrel end side offers
Multiple arranged for interval and the shearing resistance steel ball removal hole communicated with the annular channel (A).
6. pressure vessel sealing locking structure as claimed in claim 2, it is characterised in that：Self-tightening sealing component (2) packet
The sealing face ring (8) being fixed on the head cover (4) medial surface is included, sealing face ring (8) peripheral surface is equipped with and the cylinder
Body end portion (1) internal face circumferentially forms the O-ring seals (9) of sealing cooperation and spring sealed circle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341275.5A CN106969142B (en) | 2017-05-10 | 2017-05-10 | A kind of pressure vessel sealing locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341275.5A CN106969142B (en) | 2017-05-10 | 2017-05-10 | A kind of pressure vessel sealing locking structure |
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| Publication Number | Publication Date |
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| CN106969142A CN106969142A (en) | 2017-07-21 |
| CN106969142B true CN106969142B (en) | 2018-11-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107627850B (en) * | 2017-09-18 | 2020-07-21 | 芜湖金智王机械设备有限公司 | Motor vehicle instrument |
| CN110594411A (en) * | 2019-08-12 | 2019-12-20 | 中国石油化工股份有限公司 | Sealing method for pressure-resistant container |
| CN115046008B (en) * | 2022-06-30 | 2024-09-10 | 江苏省特种设备安全监督检验研究院 | Automatic efficient quick door opening device |
| CN115306897B (en) * | 2022-07-18 | 2024-06-21 | 合肥通用机械研究院有限公司 | Quick-opening type linkage mechanism for end part and cover body of large-sized pressure vessel |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201175659Y (en) * | 2008-02-19 | 2009-01-07 | 沈阳航空工业学院应用技术研究所 | Spinning type sealing device |
| CN202065465U (en) * | 2011-04-27 | 2011-12-07 | 特瑞斯信力(常州)燃气设备有限公司 | Lock ring type quick-to-open blind plate |
| CN202769127U (en) * | 2012-04-27 | 2013-03-06 | 中国石化集团江汉石油管理局第四机械厂 | Novel moveable joint connecting device |
| CN203656173U (en) * | 2013-11-06 | 2014-06-18 | 乐山川天燃气输配设备有限公司 | Lock ring type quick opening and closing blind plate device |
| CN204114109U (en) * | 2014-08-26 | 2015-01-21 | 卫梦华 | A kind of pressurized container and quick opening structure |
| CN105114437A (en) * | 2015-07-31 | 2015-12-02 | 河南航天精工制造有限公司 | Self-locking bolt |
| CN105508602B (en) * | 2015-12-21 | 2019-04-05 | 平高集团有限公司 | Retaining ring used in a kind of pressure vessel and the pressure vessel |
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2017
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