CN207378047U - For the sealing element of liquid compound spring - Google Patents
For the sealing element of liquid compound spring Download PDFInfo
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- CN207378047U CN207378047U CN201721330436.2U CN201721330436U CN207378047U CN 207378047 U CN207378047 U CN 207378047U CN 201721330436 U CN201721330436 U CN 201721330436U CN 207378047 U CN207378047 U CN 207378047U
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- sealing element
- protrusion
- lip portion
- seam allowance
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Abstract
The utility model is related to a kind of sealing element for liquid compound spring, wherein the liquid compound spring includes the elastic element with liquid containing chamber, the sealing element includes：Substrate；Pressing plate on the substrate is set；And it is arranged in the compressive resilience film of the liquid containing intracavitary, the end of the compressive resilience film is equipped with the lip portion extended radially out, wherein, the pressing plate and substrate collectively define to accommodate and seal the card slot in the lip portion, and annular seam allowance is equipped in the bottom of the card slot.
Description
Technical field
The utility model is related to mechanical seal field, more particularly to a kind of sealing element for liquid compound spring.
Background technology
In recent years, people's active development clean energy resource, wherein wind energy are a kind of new energy for cleaning and continuing forever.With to wind energy
Continually develop, wind generating technology has obtained development at full speed.With the continuous development of MW class wind turbine group, wind turbine
Load it is increasing.Therefore, the damping of the key components and parts of generating set is also particularly important.
The supporting way of wind-driven generator group wheel box of the prior art mainly uses hydraulic pressure support.Hydraulic pressure support is main
It is a kind of novel damping support to grow up on traditional elastic brace foundation for four-point supporting type.Hydraulic pressure support is pacified
Mounted in the left and right sides of the gear-box of wind power generating set, per each one of side, the torsional load of gear-box is primarily subjected to, is mainly held
Load component is liquid compound spring.Wherein, the liquid compound spring of lower end and the compound bullet of liquid of right side upper end on the left of gear-box
Spring is connected by high-pressure hose, and the liquid compound spring of left side upper end and the liquid compound spring of right side lower end are soft also by high pressure
Pipe connects.The hydraulic pressure support of this structure is when bearing torsional load, since the two pieces elastomer of pressure-bearing is connected by high-pressure hose
Logical, liquid is not flowable, shows as very big torsion stiffness.And when bearing vertical load, the compound bullet of liquid of two pieces lower end
The liquid of spring intracavitary flow to the liquid compound spring intracavitary of upper end by high-pressure hose, shows as the vertical stiffness of very little and larger
Damping.
After liquid compound spring installation, its build-in cavities need to be vacuumized and filling liquid, after filling liquid, it is necessary to liquid
Bluk recombination spring is sealed.Hydraulic support system is very high to sealing requirements, therefore, to the Seal Design of liquid compound spring
It is particularly important.
The Seal Design for being presently used for liquid compound spring mainly uses compressive resilience film.Pressure bullet of the prior art
Property film lip seal structure design be T-shaped sealing structure, act on forming sealing by the pressing of top board and lower plate.This structure
Design comparison is simple, and the seal point formed is few.During the work time, since the volume of compressive resilience film can become larger, thus
Compressive resilience film generates larger pulling force with pressing plate for sealing junction so that the lip of compressive resilience film loosens even pull-off.
This can cause sealing performance to be deteriorated, so as to influence the rigidity property of the gear-box of wind power generating set.
In addition, wind power station usually build remote place in, and unit is in high dry running, repair and maintenance it is inconvenient and into
This is very high.
Utility model content
For it is at least some as described above the technical issues of, the utility model is intended to provide a kind of for liquid compound spring
Sealing element.The sealing element can form self sealing structure, with good sealing performance, while can prevent seal point from pulling out
It takes off and causes seal failure.
For this purpose, according to the utility model, a kind of sealing element for liquid compound spring is provided, wherein the liquid is answered
Closing spring includes the elastic element with liquid containing chamber, and the sealing element includes：Substrate；Pressure on the substrate is set
Plate；And the compressive resilience film of the liquid containing intracavitary is arranged in, the end of the compressive resilience film, which is equipped with, radially outward stretches
The lip portion gone out, wherein, the pressing plate and substrate collectively define to accommodate and seal the card slot in the lip portion, described
The bottom of card slot is equipped with annular seam allowance.
In a preferred embodiment, the annular seam allowance has arc-shaped section.
In a preferred embodiment, protrusion is equipped in the lip portion, the card slot has and the raised phase
The shape of adaptation, wherein, the ring-type seam allowance is located at the longitudinal end of the card slot.
In a preferred embodiment, several last protrusions are equipped in the lip portion, corresponding each protrusion is all provided with
Annular seam allowance there are one putting.
In a preferred embodiment, the end of the protrusion has fillet, and the radius of corner of the lobe terminus is big
In the radius of corner of the annular seam allowance.
In a preferred embodiment, after pressing, the pressing plate is inside in the footpath of the protrusion with the lip portion
Side forms the first seal point.
In a preferred embodiment, the annular seam allowance has the section of rectangle.
In a preferred embodiment, the lip portion includes protrusion and is arranged on the radial outside of the protrusion
Antelabium, wherein, the ring-type seam allowance is located at the radial outside of the antelabium.
In a preferred embodiment, a quarter for the height that the height of the annular seam allowance is in the antelabium arrives
In the range of 1/3rd.
In a preferred embodiment, after pressing, the pressing plate and the antelabium are in the radial outside of the protrusion
Form the second seal point.
Description of the drawings
The utility model is illustrated below with reference to accompanying drawings.
Fig. 1 shows the structure of liquid compound spring according to the present utility model, which is included according to this
The sealing element of utility model.
Fig. 2 shows the structure in the lip portion of sealing element shown in Fig. 1.
Fig. 3 shows the structure of the reinforcer in sealing element shown in Fig. 1.
Fig. 4 shows another structure in the lip portion of sealing element shown in Fig. 1.
Fig. 5 shows another structure of the reinforcer in sealing element shown in Fig. 1.
Fig. 6 shows the different structure of the another kind of the reinforcer in sealing element shown in Fig. 1.
In this application, all attached drawings are schematical attached drawing, are merely to illustrate the principle of the utility model, and not
It is drawn to scale.
Specific embodiment
The utility model is introduced below by attached drawing.
Fig. 1 shows liquid compound spring 100 according to the present utility model, including sealing element according to the present utility model
120.As shown in Figure 1, liquid compound spring 100 includes elastic element 110.Elastic element 110 is included with cylindrical structure
Rubber body 111, an end face (such as lower face) of rubber body 111 are equipped with liquid containing chamber 113.In rubber body 111
It is interior to be equipped with steel plate 112 of the polylith as reinforcer.Steel plate 112 for example can rounded disk shape, and pass through vulcanization with rubber body
Mode forms one.The said structure of the elastic element 110 of liquid compound spring 100 is known in the art, is omitted here
It is described in detail.
Sealing element 120 according to the present utility model is arranged on the bottom of liquid compound spring 100, holds including being arranged in liquid
The compressive resilience film 130 received in chamber 113.The outer shape of compressive resilience film 130 and the structure of liquid containing chamber are adapted so that
The outer surface of compressive resilience film 130 and the inner wall of liquid containing chamber 113 fit.Footpath is equipped in the end of compressive resilience film 130
To outwardly directed lip portion 131.The lip portion 131 generally forms a L-shaped structure.It is equipped in lip portion 131 convex
Play 132.In the utility model, term " radial direction " refers to along the horizontal direction in Fig. 1.
In addition, sealing element 120 further includes the substrate 121 for being arranged on elastic element lower end and the pressure being arranged on substrate 121
Plate 122.Pressing plate 122 is embedded in rubber body 111, and substrate 121 is connected with elastic element 110 by unshowned assembling screw
Together.Wherein, radially corresponding groove 125 is equipped on substrate 121 and pressing plate 122.After pressing is installed, substrate 121
Card slot 123 is collectively defined with the groove 125 on pressing plate 122.The lip portion 131 of compressive resilience film 130 be pressed together on substrate 121 with
Between pressing plate 122, and the protrusion 132 in lip portion 131 is pressed together in card slot 123, is formed as a result, to liquid containing chamber
113 sealing.
In addition, the center of substrate 121 is in liquid containing chamber 113 and preferentially equipped with locating part 140.Limit
Position part 140 is mounted on by connecting stud (not shown) on substrate 121, realizes the /V to rubber body 111.
Fig. 2 shows the structure in the lip portion 131 of sealing element 120.As shown in Fig. 2, in the lip of compressive resilience film 130
Protrusion 132 is arranged on two surfaces in portion 131.The cross sectional shape of protrusion 132 can be set to triangle.However it can manage
Solution, the protrusion 132 may be set to be other shapes, such as rectangle, arc-shaped or waveform.For example, implement in diagram
In example, the cross sectional shape of protrusion 132 is arranged to right angled triangle, and the bevel edge of the right angled triangle is radially oriented inside and right-angle side
It is radially oriented outside.As a result, two right angled triangles be collectively formed one using protrusion 132 bevel edge is waist and base vertical is in lip
The isosceles triangle of the radial direction of oral area 131.Before pressing, the apex angle of the isosceles triangle is in 60 degree to 150 degree of model
In enclosing.After pressing is installed, protrusion 132 is subject to the collective effect of substrate 121 and pressing plate 122 and is compressed in card slot 123, makes
The apex angle for obtaining the isosceles triangle formed in lip portion 131 is in the range of 30 degree to 120 degree.
In the embodiment shown in Figure 2, lip portion 131 further includes the antelabium 135 of the radial outside positioned at protrusion 132.It should
Antelabium 135 includes the plane contacted with substrate 121 and the curved surface contacted with pressing plate 122.Meanwhile groove is on pressing plate 122
125 radial outside is additionally provided with to press the holding tank 126 of the curved surface of antelabium 135.After pressing is installed, pressing plate 122 and lip
Edge 135 forms the first seal point 150 in the radially inner side of protrusion 132, and the second seal point is formed in the radial outside of protrusion 132
160, so as to fulfill effective sealing to liquid containing chamber 113.
When liquid compound spring 100 is in running order, the liquid in compressive resilience film 130 can be compressed and cause to press
The top of power elastic membrane 130 is pulled up, so as to generate outside pull-out force at lip 131.In the present embodiment, substrate
121 press lip portion 131 jointly with pressing plate 122, and protrusion 132 is pressed together in card slot 123.In this way, lip 131 bear to
During outer pull-out force, being configured to the protrusion 132 of triangle can be close to press formed pyrometric cone by pressing plate 122 and substrate 121
Mouthful, so as to form a self sealing structure.Also, for this self sealing structure, the pull-out force born is bigger, close
Envelope is more reliable.Sealing element 120 according to the present invention effectively prevents the seal failure caused by seal point pull-off as a result,
So that liquid compound spring 100 possesses good sealing performance.
As shown in Fig. 2, it is equipped with annular seam allowance 127, annular seam allowance in the bottom of substrate 121 and the card slot 125 of pressing plate 122
127 cross sectional shape for example sets in the arc-shaped.Meanwhile the end of the protrusion 132 in lip portion 131 is equipped with fillet.It is preferred that
Ground, the radius of corner of raised 132 ends are more than the radius of corner of annular seam allowance 127.In this way, compressive resilience film is installed in pressing
When 130, lip portion 131 can is pressed sufficiently due to compressive deformation in annular seam allowance 127, so that it is guaranteed that pressing plate 122 with
Fitting closely between substrate 121.
According to the utility model, in the embodiment shown in Figure 2, section shape can be also equipped in the radial outside of antelabium 135
Shape is the annular seam allowance 128 of rectangle.Wherein, the height of annular seam allowance 128 is in a quarter of the height of antelabium 135 to three
In the range of/mono-.Equally, when compressive resilience film 130 is installed in pressing, antelabium 135 can be due to compressive deformation and by fully
It is expressed in annular seam allowance 128, so that it is guaranteed that fitting closely between pressing plate 122 and substrate 121.
In addition, in order to improve the anti-de- performance pulled out in lip portion 131 and the sealing performance in lip portion 131, according to this practicality
A new preferred embodiment can bury reinforcer in the inside in lip portion 131.As shown in figure 3, reinforcer is configured to
Steel ring 180.Steel ring 180 is arranged in the region of protrusion 132, and the cross sectional shape of steel ring 180 is arranged to section with protrusion 132
Face shape is adapted.In addition, the maximum gauge size of steel ring 180 is preferably chosen as being more than pressing plate 122 and the installation pressure of substrate 121
The opening size formed after conjunction, to further improve the anti-pulling-and-doffing performance energy in lip portion 131.In the illustrated embodiment, steel ring 180
Cross sectional shape be arranged to substantially isosceles trapezoid, and the upper bottom edge of the isosceles trapezoid is radially oriented inside and bottom is radially oriented
Outside.The shape can well with protrusion 132 shape be adapted, to greatest extent play steel ring 180 booster action.
As shown in figure 4, in one embodiment, lip portion 231 is arranged to terminate at the structure of protrusion 232 on the radial.
In this way, the free end in lip portion 231 is arranged to the protrusion 232 that cross sectional shape is triangle, the protrusion 232 of the triangle is formed as
The isosceles triangle of line centered on the radial centre lines in lip portion 231, and the base of isosceles triangle is in lip portion 231
Radial outer end, and perpendicular to substrate 221.Equally, the apex angle of the isosceles triangle is in 60 degree to 150 degree of model before pressing
In enclosing, and after pressing in the range of 30 to 120 degree.Similarly, steel can be also embedded in isosceles triangle region
Circle 280, in the illustrated embodiment, the cross sectional shape of steel ring 280 is arranged to substantially isosceles trapezoid, and the upper bottom edge of the isosceles trapezoid
On the outside of on the inside of being radially oriented and bottom is radially oriented.In this way, after pressing, pressing plate 221 is with lip portion 231 in protrusion 232
Radially inner side forms the first seal point 250, and this structure can equally realize effective sealing to liquid containing chamber 113.
In addition, in the present embodiment, as shown in figure 4, being equipped with ring in the bottom of substrate 221 and the card slot 225 of pressing plate 222
Shape seam allowance 227, the cross sectional shape of annular seam allowance 227 for example set in the arc-shaped.Meanwhile the end of the protrusion 232 in lip portion 231
End is equipped with fillet.Preferably, the radius of corner of raised 232 ends is more than the radius of corner of annular seam allowance 227.In this way, it is pressing
When installing compressive resilience film 230, lip portion 231 can be pressed sufficiently in annular seam allowance 227 due to compressive deformation, from
And ensure fitting closely between pressing plate 222 and substrate 221.
As shown in figure 5, in one embodiment, the section setting of the protrusion 332 in lip portion 331 is in the arc-shaped.Meanwhile
The section for being arranged on the steel ring 380 inside protrusion 332 is arranged to the circle being adapted with the section of protrusion 332, this is circular straight
Footpath size is preferentially selected larger than pressing plate 322 and the opening size formed after the installation pressing of substrate 321, to further improve
The anti-pulling-and-doffing performance energy in lip portion 331.After pressing, pressing plate 321 forms first with lip portion 331 in the radially inner side of protrusion 332
Seal point 350 forms the second seal point 360, so as to fulfill to the effective of liquid containing chamber 113 in the radial outside of protrusion 332
Sealing.
In a unshowned embodiment, lip portion 331 can be equipped with multiple raised 332, and in each raised 332 area
Steel ring 380 is equipped in domain.On the one hand this structure adds the quantity of seal point, on the other hand also improve lip portion 331
Rigidity, be added significantly to the anti-pull-off performance of compressive resilience film 330.
As shown in fig. 6, in one embodiment, the section setting of the protrusion 432 in lip portion 431 is rectangular.This
In the case of, the section for being arranged on the steel ring 480 inside protrusion 432 is arranged to the rectangle being adapted with the section of protrusion 432, should
The long side of rectangle is placed perpendicular to lip portion 431 in the radial direction, and the long edge size of the rectangle is preferentially chosen to greatly
The opening size formed after pressing plate 422 and the installation pressing of substrate 421, to further improve the anti-pulling-and-doffing performance in lip portion 431
Energy.After pressing, pressing plate 421 forms the first seal point 450 with lip portion 431 in the radially inner side of protrusion 432, in protrusion 432
Radial outside formed the second seal point 460, so as to fulfill effective sealing to liquid containing chamber 113.
According to the utility model, compressive resilience film 130 can be made of rubber material.The lip portion 131 of compressive resilience film 130
The scope of compression ratio be arranged to 10 five to percent four ten, can be protected while the rigidity in lip portion 131 is ensured
The toughness and tension in card lip portion 131 take off performance, so as to ensure the sealing performance of liquid containing chamber 113.
" steel ring " mentioned in this application is only the class made of other materials for convenience of the term used for the sake of discussion
It can be used like the part of ring, loop-shaped.
Finally it should be noted that the foregoing is merely the utility model preferred embodiment, do not form to this
Any restrictions of utility model.Although the utility model is described in detail with reference to foregoing embodiments, for
For those skilled in the art, it can still modify to the technical solution recorded in previous embodiment or to wherein
Some technical characteristics carry out equivalent substitution.Within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of sealing element for liquid compound spring, wherein the liquid compound spring includes the bullet with liquid containing chamber
Property element, which is characterized in that the sealing element includes：
Substrate；
Pressing plate on the substrate is set；And
The compressive resilience film of the liquid containing intracavitary is arranged in, the end of the compressive resilience film is equipped with what is extended radially out
Lip portion,
Wherein, the pressing plate and substrate collectively define to accommodate and seal the card slot in the lip portion, in the card slot
Bottom is equipped with annular seam allowance.
2. sealing element according to claim 1, which is characterized in that the ring-type seam allowance has arc-shaped section.
3. sealing element according to claim 2, which is characterized in that protrusion, the card slot tool are equipped in the lip portion
There is the shape being adapted with the protrusion, wherein, the ring-type seam allowance is located at the longitudinal end of the card slot.
4. sealing element according to claim 3, which is characterized in that several last protrusions are equipped in the lip portion, it is right
Each protrusion is answered to be respectively provided with, and there are one annular seam allowances.
5. sealing element according to claim 4, which is characterized in that the end of the protrusion has fillet, the protrusion end
The radius of corner at end is more than the radius of corner of the annular seam allowance.
6. sealing element according to claim 5, which is characterized in that after pressing, the pressing plate is with the lip portion in institute
The radially inner side for stating protrusion forms the first seal point.
7. sealing element according to claim 1, which is characterized in that the ring-type seam allowance has the section of rectangle.
8. sealing element according to claim 7, which is characterized in that the lip portion includes protrusion and is arranged on described
The antelabium of the radial outside of protrusion, wherein, the ring-type seam allowance is located at the radial outside of the antelabium.
9. sealing element according to claim 8, which is characterized in that the height of the ring-type seam allowance is in the height of the antelabium
The a quarter of degree is in the range of 1/3rd.
10. sealing element according to claim 9, which is characterized in that after pressing, the pressing plate is with the antelabium described
The radial outside of protrusion forms the second seal point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721330436.2U CN207378047U (en) | 2017-10-17 | 2017-10-17 | For the sealing element of liquid compound spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721330436.2U CN207378047U (en) | 2017-10-17 | 2017-10-17 | For the sealing element of liquid compound spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207378047U true CN207378047U (en) | 2018-05-18 |
Family
ID=62338633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721330436.2U Active CN207378047U (en) | 2017-10-17 | 2017-10-17 | For the sealing element of liquid compound spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207378047U (en) |
-
2017
- 2017-10-17 CN CN201721330436.2U patent/CN207378047U/en active Active
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