CN101769815A - Testing device for plane sealing performance - Google Patents

Testing device for plane sealing performance Download PDF

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Publication number
CN101769815A
CN101769815A CN200910110247A CN200910110247A CN101769815A CN 101769815 A CN101769815 A CN 101769815A CN 200910110247 A CN200910110247 A CN 200910110247A CN 200910110247 A CN200910110247 A CN 200910110247A CN 101769815 A CN101769815 A CN 101769815A
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CN
China
Prior art keywords
base
testing
lip ring
sealing performance
loam cake
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CN200910110247A
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Chinese (zh)
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CN101769815B (en
Inventor
周明杰
曾元丰
Original Assignee
海洋王照明科技股份有限公司
深圳市海洋王照明工程有限公司
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Application filed by 海洋王照明科技股份有限公司, 深圳市海洋王照明工程有限公司 filed Critical 海洋王照明科技股份有限公司
Priority to CN2009101102478A priority Critical patent/CN101769815B/en
Publication of CN101769815A publication Critical patent/CN101769815A/en
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Publication of CN101769815B publication Critical patent/CN101769815B/en

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Abstract

The invention relates to a testing device for plane sealing performance comprising a base (2) with an open end and an upper cover (1) which seals the open end of the base (2), also comprising an annular seal groove (5) arranged on a contact surface between the open end of the base (2) and the upper cover (1) for holding an annular seal element (3), wherein a plurality of one-to-one corresponding through holes (9) used for mounting bolts (4) are respectively arranged at the outer edge of the upper cover (1) and the outer side of the seal groove (5). The plane sealing performance can be obtained by respectively measuring the air tightness of the mounting bolts (4) with different numbers and the annular seal elements (3) made of different materials. The testing device with simple structure and convenient operation not only can effectively test the sealing performance of a plane sealing device, but also can collect a series of data valuable to the plane sealing design and provides basis for the sealing design accuracy.

Description

A kind of testing device for plane sealing performance
Technical field
The present invention relates to the sealing property measuring technology, relate in particular to a kind of testing device for plane sealing performance.
Background technology
Butt-end packing is named in the axial plane sealing of grommet type seals again, and is corresponding with radial seal.The factor that influences flat seal is many-sided.Mainly contain: lip ring performance, bolt arrangement etc.Lip ring is the critical elements that constitutes flat seal, and suitable compressibility and resilience are the necessary conditions that forms sealing.And the rationality of bolt arrangement is another key factor of influence sealing, reach good sealing, must make pretightning force act on lip ring equably.Therefore, when material stiffness one timing, increasing the bolt number, is favourable to sealing.But bolt uses and too much not only causes waste, also has influence on the parts mechanical property easily.How many bolts in light of the circumstances flat seal need use, use the lip ring of what model not have simple theoretical foundation in the actual production, often will lean on the designer to estimate according to the experience of long-term design.
For a long time, people mainly carry out the flat seal design by the mode of experience and calculating and usefulness.And rarely has the approach that obtains the optimal design data by test.Experience depends on designer's long-term accumulation, is a loaded down with trivial details process and calculate, and makes mistakes easily, also difficult discovery the after makeing mistakes.By the retrieval pertinent literature, be not exclusively used in the flat seal test in the existing sealing test device, and the most complex structure of existing sealing test device, cost high enterprise.
Summary of the invention
Technical matters to be solved by this invention is, do not have the deficiency of simple possible means at the design process of above-mentioned flat seal, provides a kind of simple in structure, easy to operate, and can the Validity Test testing device for plane sealing performance.
The technical solution adopted for the present invention to solve the technical problems is, a kind of testing device for plane sealing performance is provided, and described proving installation comprises the base of an end opening and the loam cake of this base openings end of sealing; Also comprise the annular seal groove that is used to install lip ring that is provided with on the surface of contact of described base openings end and loam cake; The described loam cake outer and the described seal groove outside are respectively equipped with a plurality of through holes that are used for erection bolt one to one.
In testing device for plane sealing performance of the present invention, described lip ring is a flexible member, and the height of described lip ring is greater than the degree of depth of seal groove, and the width of described lip ring is less than the width of described seal groove.
In testing device for plane sealing performance of the present invention, between described base and the loam cake one to one the through hole bolt is housed, be arranged with rigid gasket on the described bolt, described rigid gasket is between base and loam cake.
The technical scheme that the present invention is adopted for its technical matters of solution, another kind of testing device for plane sealing performance also is provided, be used to test the axial plane sealing property of lip ring, described proving installation comprises the base of an end opening and the loam cake of this base openings end of sealing; Described base openings end is provided with the outward extending extension of level and described base openings end end face inboard and is provided with and is used to install lip ring and around the seal groove of base openings end; Described loam cake outer and described extension are provided with a plurality of through holes that are used for erection bolt one to one respectively.
In the above-mentioned testing device for plane sealing performance of the present invention, described annular seal groove is arranged on the base openings end end face.
In the above-mentioned testing device for plane sealing performance of the present invention, described extension is a plurality of outstanding outer rims that have through hole respectively.
In the above-mentioned testing device for plane sealing performance of the present invention, described extension is annular outer, and described through hole is arranged on the annular outer.
In the above-mentioned testing device for plane sealing performance of the present invention, described lip ring is a flexible member, and the height of described lip ring is greater than the degree of depth of seal groove, and the width of described lip ring is less than the width of described seal groove.
In the above-mentioned testing device for plane sealing performance of the present invention, between described base and the loam cake one to one the through hole bolt is housed, be arranged with rigid gasket on the described bolt, described rigid gasket is between base and loam cake.
In the above-mentioned testing device for plane sealing performance of the present invention, described loam cake is a Transparent Parts.
Implement flat seal proving installation provided by the invention, simple in structure, easy to operate, but and the sealing property of Validity Test lip ring, and can obtain a series of sealing data with long-term guiding value, effectively improve the accuracy of Seal Design, reduce and reveal, increase customer satisfaction degree, reduce the dependence of enterprise professional Seal Design personnel.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the planimetric map of testing device for plane sealing performance embodiment one of the present invention;
Fig. 2 is along the cross section view of A-A line among Fig. 1;
Fig. 3 is the local enlarged diagram of Fig. 2;
Fig. 4 is the cut-open view of testing device for plane sealing performance embodiment three of the present invention;
Fig. 5 is the synoptic diagram of the best pitch of bolts test implementation of testing device for plane sealing performance of the present invention example.
Embodiment
Embodiment 1
As illustrated in fig. 1 and 2, in the embodiment 1 of testing device for plane sealing performance of the present invention, comprise base 2 and loam cake 1; Base 2 is the cylindrical member of an end opening, and the middle part forms shallow slot 6, the annular seal groove that is used to install lip ring 3 (5) that is provided with on the surface of contact of described base 2 openend end faces and loam cake 1, and be provided with the outward extending extension 7 of level at base 2 openends.On extension 7 and loam cake 1 outer, be provided with a plurality of through holes 9 that are used for erection bolt 4 one to one.
Wherein, described annular seal groove (5) is arranged on base (2) the openend end face.
Lip ring 3 is a flexible member, and its height is greater than the degree of depth of seal groove 5, and width is slightly less than the width of seal groove 5.When putting into seal groove 5, lip ring 3 can't take seal groove 5 fully, vacant 51 of therefore forming of seal groove 5, and vacant 51 is used to install the deformation part that described lip ring 3 is produced when being subjected to external pressure.
When erection bolt 4, can on bolt 4, adorn the pad 8 of rigidity material, the usage quantity minimum value of each bolt 4 Upper gasket 8 can be taken as 0, its through hole 9 places one to one between the extension 7 of described base 2 and loam cake 1, and through hole 9 is coaxial one to one between the extension 7 of the hole of rigid gasket 8 and base 2 and the loam cake 1, as shown in Figure 3.
Described extension 7 can be the annular outer of a whole astragal through hole or the outstanding outer rim of a plurality of band through holes.
Below in conjunction with the foregoing description, specify this testing device for plane sealing performance and how to realize what plane sealing performance was tested.
It is the ethylene-propylene-diene rubber lip ring of 50 degree and 60 degree that present embodiment is selected encapsulant for use, existing by proving installation test searching best pitch of bolts, lip ring optimal compression value and suitable hardness.In each A﹠T process, utilize the transparency of loam cake to can be observed the installation situation of lip ring and the place that appearance is revealed.
1. best pitch of bolts test
To packoff, pitch of bolts is more little, and sealing effectiveness is good more, and under many circumstances, the requirement of sealing effectiveness is very not high, and too intensive bolt can increase cost.Best pitch of bolts is: all external conditions are reduced under the situation of the poorest standard, still can just satisfy the critical pitch of bolts that sealing property requires.Therefore, choosing of best pitch of bolts requires relevant with actual sealing property.
As shown in Figure 5, distance between two bolts 4 is X, between base 2 and loam cake 1, do not put under the situation of pad 8, in gap, bolt position place is 0, under the fastening condition of bolt 4, the edge of loam cake 1 is fixed, and the height of lip ring 3 is greater than the height of seal groove 5, and this moment, lip ring 3 was by base 2 and loam cake 1 extruding.Since lip ring 3 elastic force effects, and the edge of loam cake 1 is fixed, and distortion will appear in loam cake 1, maximum distortion Y can occur in the centre position in theory.For different packoffs, the span of maximum distortion Y can calculate according to actual seal request.Under certain pitch of bolts,, be preferable pitch of bolts as long as maximum distortion Y does not exceed span.Described best pitch of bolts test may further comprise the steps:
S1: put into lip ring 3 for 5 li at seal groove, tight a bolt 4, measure the spacing X between the adjacent bolt 4;
S2: the maximal clearance Y between extension 7 upper surfaces of measurement loam cake 1 and base 2;
S3: obtain corresponding Y value by getting different X values;
S4:, just can find out a preferable pitch of bolts by certain data processing method.
2. lip ring optimal compression value test
For packoff, the compressibility of seal is related to the life-span and the sealing property of product.Compressibility is big more, and the life-span of product is short more.Therefore, optimal compression value is and gets the minimal compression rate to guarantee the serviceable life of product under the prerequisite that satisfies the product hermeticity energy.
As shown in Figure 3, by increase and decrease pad 8 between base 2 and loam cake 1, thus the decrement of change lip ring.This routine lip ring depth of section is 8mm, compressibility is not 30% when having pad, increase the pad of a 0.4mm, compressibility becomes 25%, compressibility becomes 20% when increasing by two pads, also can obtain 15%, 10%, 5% compressibility by that analogy, test the sealing effectiveness that can obtain under the various compressibilitys, just can obtain best compressibility by certain analysis and judgement method by proving installation.The test of lip ring optimal compression value may further comprise the steps:
S1: measure when not using pad 8 compressibility of lip ring 3;
S2: measure the height of pad 8 thickness and lip ring 3, and extrapolate according to the S1 measurement result and to use when being no less than 1 pad 8 compressibility of lip ring 3;
S3: when varying number pad 8 is used in test, the sealing property of lip ring 3;
S4:, just can obtain the lip ring optimal compression value by certain disposal route according to the S3 test result and in conjunction with S1, S2 measurement data.
3. best lip ring testing material hardness
In proving installation provided by the invention, successively pack into 50 degree and the 60 EPT rubber packing circles of spending, under certain pitch of bolts, draw the sealing effectiveness contrast table under identical compressibility, test result is carried out certain analyzing and processing just can find out best lip ring material hardness.Best lip ring testing material hardness may further comprise the steps:
S1: the lip ring 3 that the matter of drawing materials hardness is different;
S2: under certain pitch of bolts, test the sealing effectiveness of the unlike material lip ring 3 under the identical compressibility;
S3: test result is carried out certain analysis and judgement just can find out best lip ring material hardness.
Embodiment 2
As shown in Figure 4, the plane sealing performance pick-up unit that provided of embodiment 3 comprises base 2 and loam cake 1; Base 2 is the cylindrical member of an end opening, and the middle part forms shallow slot 6; The annular seal groove that is used to install lip ring 3 (5) that is provided with on the surface of contact of described base 2 openend end faces and loam cake 1; There are a plurality of through holes 9 in seal groove 5 outsides on the base 2 openend end faces, and the outer of loam cake 1 is provided with the through hole that a plurality of and base 2 are used for erection bolt 4 one to one.
The using method of embodiment 2 is with embodiment 1.
In the various embodiments described above, best pitch of bolts, best lip ring material, best lip ring compressibility all can draw according to the test of concrete operating position, and restriction condition each other between the three.Want bonding properties demand and cost concrete analysis during actual the use.
Pad in the foregoing description is optional, and the shape of loam cake and base also is not limited to the described shape of present embodiment, as long as can reach all being suitable for of identical purpose.Loam cake also might not be chosen the transparent material material, so long as have certain elasticity, and is convenient to observe its deformed configurations or material all is suitable for.
Extension in the foregoing description neither be necessary, when the base wall thickness is enough big, can directly at base openings end end face through hole and seal groove (embodiment 2) be set.When the base wall thickness is not enough to seal groove and through hole are set simultaneously, need at base openings end arranged outside extension, the shape of described extension is not limit, as long as satisfy the position and the size requirements of through hole.Described extension both can be the outstanding outer rim of band through hole, also can be the annular outer (embodiment 1) that has through hole.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a testing device for plane sealing performance is characterized in that, described proving installation comprises the base (2) of an end opening and the loam cake (1) of sealing this base (2) openend; Also comprise the annular seal groove that is used to install lip ring (3) (5) that is provided with on the surface of contact of described base (2) openend and loam cake (1); Described loam cake (1) outer and described seal groove (5) outside are respectively equipped with a plurality of through holes (9) that are used for erection bolt (4) one to one.
2. according to the described testing device for plane sealing performance of claim 1, it is characterized in that described annular seal groove (5) is arranged on base (2) the openend end face.
3. according to the described testing device for plane sealing performance of claim 1, it is characterized in that, described lip ring (3) is a flexible member, and described lip ring (3) height is greater than the degree of depth of seal groove (5), and described lip ring (3) width is slightly less than the width of described seal groove (5).
4. according to the described testing device for plane sealing performance of claim 3, it is characterized in that, between described base (2) and the loam cake (1) one to one through hole (9) locate to be equipped with bolt (4), be arranged with rigid gasket (8) on the described bolt (4), described rigid gasket (8) is positioned between base (2) and the loam cake (1).
5. testing device for plane sealing performance, the axial plane sealing property that is used to test lip ring (3) is characterized in that, described proving installation comprises the base (2) of an end opening and the loam cake (1) of sealing this base (2) openend; Described base (2) openend is provided with the outward extending extension of level (7) and described base (2) openend end face inboard and is provided with and is used to install lip ring (3) and around the seal groove (5) of base (2) openend; Described loam cake (1) outer and described extension (7) are respectively equipped with a plurality of through holes (9) that are used for erection bolt (4) one to one.
6. testing device for plane sealing performance according to claim 5 is characterized in that, described extension (7) is a plurality of outstanding outer rims that have through hole (9) respectively.
7. testing device for plane sealing performance according to claim 5 is characterized in that, described extension (7) is annular outer, and described through hole (9) is arranged on the annular outer.
8. according to claim 6 or 7 described testing device for plane sealing performance, it is characterized in that, described lip ring (3) is a flexible member, and the height of described lip ring (3) is greater than the degree of depth of seal groove (5), and the width of described lip ring (3) is less than the width of described seal groove (5).
9. described according to Claim 8 testing device for plane sealing performance, it is characterized in that, between described base (2) and the loam cake (1) one to one through hole (9) locate to be equipped with bolt (4), be arranged with rigid gasket (8) on the described bolt (4), described rigid gasket (8) is positioned between base (2) and the loam cake (1).
10. according to the described testing device for plane sealing performance of claim 1, it is characterized in that described loam cake (1) is a Transparent Parts.
CN2009101102478A 2009-10-27 2009-10-27 Testing device for plane sealing performance CN101769815B (en)

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Application Number Priority Date Filing Date Title
CN2009101102478A CN101769815B (en) 2009-10-27 2009-10-27 Testing device for plane sealing performance

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Application Number Priority Date Filing Date Title
CN2009101102478A CN101769815B (en) 2009-10-27 2009-10-27 Testing device for plane sealing performance

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CN101769815B CN101769815B (en) 2011-12-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104122044A (en) * 2014-07-09 2014-10-29 马永青 Plane sealing performance testing device
CN108254130A (en) * 2017-12-30 2018-07-06 北京化工大学 Continuous high-temperature sealing performance test wind tunnel device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN88200285U (en) * 1988-01-16 1988-09-21 大连市旅顺铸件浸渗设备厂 Inner-outer differential pressure type lock sealing structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104122044A (en) * 2014-07-09 2014-10-29 马永青 Plane sealing performance testing device
CN108254130A (en) * 2017-12-30 2018-07-06 北京化工大学 Continuous high-temperature sealing performance test wind tunnel device
CN108254130B (en) * 2017-12-30 2020-09-22 北京化工大学 Wind tunnel device for continuous high-temperature sealing performance test

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