CN104595493A - Sealing device and sealing ring thereof - Google Patents
Sealing device and sealing ring thereof Download PDFInfo
- Publication number
- CN104595493A CN104595493A CN201510070030.4A CN201510070030A CN104595493A CN 104595493 A CN104595493 A CN 104595493A CN 201510070030 A CN201510070030 A CN 201510070030A CN 104595493 A CN104595493 A CN 104595493A
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- Prior art keywords
- seal ring
- seal
- ring
- dust
- groove
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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
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/02—Packing the free space between cylinders and pistons
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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
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a sealing ring, which comprises a base body, a first elastic element and a support element used for supporting, wherein the base body is provided with a groove, the support element is fixedly arranged in the groove, the first elastic element is arranged between the support element and the inner side wall of the groove in a clamping way, and in addition, the first elastic element exerts the force in the direction towards the axis center when receiving the impact by fluid. When the sealing ring provided by the invention is adopted, and when the sealing ring receives the impact by the fluid, on one hand, the base body has a certain impact resistance effect on the fluid, and on the other hand, the elastic element receives the impact effect of the fluid and exerts the force in the direction towards the axis center on the base body, so that the contact of the base body and the part passing through the shaft hole is tighter, so that a good sealing effect is achieved. Therefore the sealing ring has the excellent high-pressure fluid dynamic sealing performance, and in addition, the service life is long. The invention also discloses a sealing device comprising the sealing ring.
Description
Technical field
The present invention relates to technical field of sealing technology, more particularly, relate to a kind of seal ring, also relate to a kind of seal arrangement comprising above-mentioned seal ring.
Background technique
Sealing is at the technical fields such as machinery and all very common component of daily life.By sealing, can anti-fluid or solid particle from leaking between adjacent junction plane and preventing introduced contaminants such as the impurity such as dust and moisture from invading machinery equipment inside.
Traditional Sealing is used for the static seal of high and low pressure medium and the motive sealing of low-pressure medium.But for high-pressure liquid, general Sealing can not play motive sealing effect maybe can only play of short duration motive sealing effect.For plunger pump, the motive sealing of traditional power end of plunger pump at plunger place adopts the double sealing structure of oil sealing and mud retaining ring, and this composite structure can play the effect of stop under normal circumstances to the lubricant oil of inside and the impurity of outside.But, when fluid end packing component wear is serious, when high-pressure liquid is sprayed onto power end along plunger, said structure can not play the effect of sealing to high-pressure liquid, cement slurry, acidifying solution etc. is made to enter power end enclosure interior along plunger, the transmission system of pump is damaged, thus reduces the working life of pump and bring higher maintenance and other fringe costs.Thus, long service life and the Sealing being applicable to high pressure field are for field all important in inhibitings such as petroleum industry, well cementation, pressure break, acidifyings.
In sum, how effectively solving the problems such as high pressure field Sealing sealing effect bad and working life is short, is current those skilled in the art's urgent problem.
Summary of the invention
In view of this, first object of the present invention is to provide a kind of seal ring, the structural design of sealing circle can solve the bad and problem that working life is short of high pressure field Sealing sealing effect effectively, and second object of the present invention is to provide a kind of seal arrangement comprising above-mentioned seal ring.
In order to reach above-mentioned first object, the invention provides following technological scheme:
A kind of seal ring, comprise matrix, the first elastic component and the supporting element for supporting, described matrix offers groove, described supporting element is fixedly installed in described groove, described first elastic component is arranged between the madial wall of described supporting element and described groove, and during by fluid impact, described first elastic component applies towards the power of axis direction to described matrix.
Preferably, in above-mentioned seal ring, described first elastic component is V-type spring, and the opening of described V-type spring is towards the notch direction of described groove, and the opening two ends of described V-type spring offset with described pedestal and described supporting element respectively along the radial direction of described seal ring.
Preferably, in above-mentioned seal ring, comprise the second elastic component be arranged between described supporting element and described groove outer side wall further, and the elastic force of described second elastic component acts on described matrix and described supporting element.
Preferably, in above-mentioned seal ring, described second elastic component is coil spring.
Preferably, in above-mentioned seal ring, described supporting element cross section is radially T-shaped.
Preferably, in above-mentioned seal ring, described supporting element is metallic support.
Preferably, in above-mentioned seal ring, the material of described matrix is teflon.
Seal ring provided by the invention comprises matrix, the first elastic component and the supporting element for supporting.Wherein, matrix offers groove, supporting element is fixedly installed in groove, with thinking that the first elastic component provides support, first elastic component is arranged between supporting element and the madial wall of groove, and during by fluid impact, the first elastic component can apply towards the power of axis direction to matrix, makes matrix more tight with the component contact through axis hole.
Apply seal ring provided by the invention, when being subject to fluid impact, matrix has certain opposing percussion for fluid on the one hand, on the other hand, as fluid enter in the groove of seal ring matrix time, can impact elastic component, by the percussion of fluid, elastic component has the trend of distortion, and then the effect of power can be produced to the matrix at its two ends and supporting element, because supporting element is fixed on matrix, therefore not easily to move and not yielding, the matrix of the other end thus offseted with elastic component is subject to the power towards axis direction of elastic component, more easily produce the trend to this Directional Extension, thus matrix is made to contact more tight with the moving element through axis hole, to reach good sealing effect.
In order to reach above-mentioned second object, present invention also offers a kind of seal arrangement, sealing device comprises any one seal ring above-mentioned, also comprise the dust ring of the notch side being arranged at described o-ring groove, the inner side of described dust ring is provided with lip limit, and the opening direction on described lip limit deviates from the notch of described groove, between described seal ring and described dust ring, be provided with the grommet for supporting described seal ring and described dust ring.
Preferably, in above-mentioned seal arrangement, comprise two the described seal rings be set up in parallel, the groove notch of two described seal rings is towards the opposite, and the one side relative with described groove notch of the matrix of two described seal rings mutually near.
Preferably, in above-mentioned seal arrangement, the quantity of described dust ring is two, is placed in the both sides of two described seal rings respectively, and is provided with the grommet for supporting described seal ring and described dust ring between each described dust ring and described seal ring.
Preferably, in above-mentioned seal arrangement, comprise oil sealing base, oil sealing, sealing seat and anti-dust seat further, described oil sealing is placed in described oil sealing base, described seal ring is placed in described sealing seat, described dust ring is placed in described anti-dust seat, and described sealing seat is placed between described oil sealing base and described anti-dust seat, and described oil sealing base, described sealing seat are fixedly connected with described anti-dust seat.
Because above-mentioned seal ring has above-mentioned technique effect, the seal arrangement with sealing circle also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of embodiment of seal ring provided by the invention;
Fig. 2 is the partial enlarged drawing of the seal ring shown in Fig. 1;
Fig. 3 is the relative position schematic diagram of the seal ring of the first embodiment of seal arrangement provided by the invention, dust ring and grommet;
Fig. 4 is the structural representation of the dust ring of the seal arrangement shown in Fig. 3;
Fig. 5 is the structural representation of seal arrangement the second embodiment provided by the invention;
Fig. 6 is the installation form schematic diagram of the first embodiment of seal arrangement provided by the invention;
The overall structure schematic diagram that Fig. 7 is the seal arrangement described in Fig. 6.
In accompanying drawing, mark is as follows:
Matrix 1, the second elastic component 2, supporting element 3, the first elastic component 4, grommet 5, dust ring 6, oil sealing base 7, oil sealing 8, sealing seat 9, anti-dust seat 10, lip limit 11.
Embodiment
The embodiment of the invention discloses a kind of seal ring, can sealed high pressure fluid and sealing circle has longer working life.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of embodiment of seal ring provided by the invention; Fig. 2 is the partial enlarged drawing of the seal ring shown in Fig. 1.
In a kind of embodiment, seal ring provided by the present invention comprises matrix 1, supporting element 3 and the first elastic component 4.
Matrix 1 is the main body of seal ring, generally be made up of wear-resisting acid resistant alkali material, concrete can be teflon, can certainly be other common sealing ring materials, general for ring structure provided by the invention, its material is that teflon can have better high-pressure fluid seal performance.Matrix 1 is ring structure, and the diameter of its hollow space can be determined according to the external diameter of the piston type part of different size etc.Matrix 1 offers the groove of annular, to install supporting element 3 and elastic component.
Supporting element 3 is the supporting part of seal ring, mainly plays the effect supporting elastic component and matrix 1.Meanwhile, when there being fluid impact, supporting element 3 can effectively play the effect of bearing part of impact force, to reduce the destruction of fluid impact to seal ring matrix 1.In the groove being arranged at pedestal 1 that supporting element 3 is fixing, thus when elastic component has deformation tendency, due to the effect of supporting element 3, supporting element side is not yielding, and the active force of elastic component acts on pedestal 1 and produces deformation tendency to make it.
First elastic component 4 is arranged between matrix 1 and the madial wall of groove, and madial wall herein refers to the sidewall in the close axle center of groove, and one end and the matrix 1 of the first elastic component 4 offset, and the madial wall of the other end and groove offsets.And then when being subject to fluid impact, first elastic component has the trend of distortion, further generation is towards axle center and the tension force deviating from axle center, and act on matrix 1 and supporting element 3 respectively, due to matrix 1 not easily displacement, therefore mentioned strain makes matrix 1 produce the trend expanded to axis direction, it is made to contact more tight with the piston type component through matrix 1 hollow space.Concrete, above-mentioned first elastic component 4 can be V-type spring, and the opening of V-type spring is towards the notch direction of above-mentioned groove, and the opening two ends of V-type spring offset with matrix 1 and supporting element 4 respectively along the radial direction of seal ring.When being subject to fluid impact, the opening power of being hit of V-type spring has the trend of expansion, and then the matrix 1 offseted with it is by the tension force effect of V-type spring towards axle center, more tight with piston type component contact, to reach good sealing effect.When above-mentioned seal ring is used for sealed high pressure fluid, have directivity, i.e. its forward, namely the notch direction of matrix 1 groove has excellent high-pressure liquid motive sealing performance; And it dorsad, the notch direction namely deviating from matrix 1 groove has the sealability to low-pressure fluid equally.Thus, above-mentioned seal ring had both been applicable to low-pressure fluid and had also been applicable to high-pressure liquid.
Some further improvement can be carried out to the seal ring in above-mentioned a kind of embodiment.
In order to supporting element 3 can have better support effect, be convenient to the installation of the external structure such as seal ring and sealing seat mounting hole, above-mentioned seal ring can arrange the second elastic component 2 further simultaneously.Second elastic component 2 is arranged between supporting element 3 and groove outer side wall, and outer side wall herein refers to the sidewall away from axle center of groove, relative with above-mentioned madial wall.The elastic force of the second elastic component 2 acts on matrix 1 and supporting element 3, plays further support limit effect on the one hand with the first elastic component 4 acting in conjunction to supporting element 3; On the other hand, when the external structures such as above-mentioned seal ring and sealing seat are installed, the interference fit of seal ring and external structure mounting hole is convenient in the elastic force effect of the second elastic component 2.General, above-mentioned second elastic component 2 can be coil spring, can certainly be other common elastic components.
Further, what the shape of above-mentioned supporting element 3 was concrete can be T-shaped, and namely cross section is radially T-shaped.In order to the installation of supporting element 3, the groove floor of matrix 1 is offered further the groove coordinated with supporting element 3, make T-shaped bottom, one end that namely cross section is little is arranged in the groove of matrix 1.T-shaped head, area is comparatively large, can the impact of receiving portion shunting body.Meanwhile, T-shaped axially symmetric structure is conducive to its support limit effect.It is pointed out that the shape of supporting element 3 is also not limited to T-shaped, also can be other shapes.Concrete, supporting element 3 can be metallic support, certainly, and the supporting element of the other materials that also can satisfy condition for other rigidity etc.
Based on the seal ring provided in above-described embodiment, present invention also offers a kind of seal arrangement, sealing device comprises any one seal ring in above-described embodiment.Refer to Fig. 3 and Fig. 4, Fig. 3 is the relative position schematic diagram of the seal ring of the first embodiment of seal arrangement provided by the invention, dust ring and grommet; Fig. 4 is the structural representation of the dust ring of the seal arrangement shown in Fig. 3, and the arrow direction in figure is pressure direction.In order to more effective effect silt etc. being played to baffle seal, avoid silt to damage other Sealings such as the seal ring inside seal arrangement, above-mentioned seal arrangement comprises dust ring 6 further.Dust ring 6 is arranged at the notch side of matrix 1 groove, and the inner side of dust ring 6 is provided with lip limit 11, and the side of the paraxial heart is depended in inner side described here.Meanwhile, the opening direction on lip limit 11 deviates from the notch of matrix 1 groove.Concrete lip limit 11 can be V-type lip limit, the working principle on V-type lip limit and the first elastic component 4 of seal ring similar, no longer describe in detail here.Certainly, lip limit 11 is not limited to V-type, and lip form can adjust according to sealing medium and actual conditions.For avoiding seal ring and dust ring 6 to be subject to fluid impact generation influence of crust deformation sealing effect, between seal ring and dust ring 6, grommet 5 being set further, to play the effect supporting seal ring and dust ring 6, ensureing sealing effect.
Refer to Fig. 5, Fig. 5 is the structural representation of seal arrangement the second embodiment provided by the invention, and the arrow direction in figure is pressure direction.Seal ring as above has directivity, and the seal arrangement comprising sealing circle also has directivity when being applied to sealed high pressure fluid.Thus, in order to satisfied different duty requirements, reach forward and dorsad there is high-pressure liquid motive sealing effect simultaneously, above-mentioned seal arrangement can be set to comprise two above-mentioned seal rings, and two seal rings are arranged back-to-back, namely the one side deviating from groove notch of two seal rings contacts, and in other words the groove notch of two seal rings is towards the opposite.Forward is herein identical with the implication dorsad with mentioned above.By being set up in parallel the motive sealing that two seal rings can realize both sides high-pressure liquid.
According to actual needs, when being provided with two seal rings, can selectively wherein the side of a seal ring dust ring 6 is set, or two dust rings 6 are set respectively in the both sides of two seal rings, to reach the seal action of side silt etc. or all to there is dustproof effect to both sides simultaneously.When arranging two dust rings 6, the opening direction on its V-type lip limit 11 is consistent with the groove notch direction of the seal ring be adjacent.Between each seal ring and dust ring 6, grommet 5 is all set.
Further, above-mentioned seal arrangement can comprise the parts such as oil sealing base 7, oil sealing 8, sealing seat 9 and anti-dust seat 10, forms integrally-built seal arrangement, to be applicable to the equipment such as plunger pump.Refer to Fig. 6 and Fig. 7, Fig. 6 is the installation form schematic diagram of the first embodiment of seal arrangement provided by the invention; The overall structure schematic diagram that Fig. 7 is the seal arrangement described in Fig. 6.Oil sealing 8 is placed in oil sealing base 7, and seal ring is placed in sealing seat 9, and dust ring 6 is placed in anti-dust seat 10, sealing seat 9 is placed between oil sealing base 7 and anti-dust seat 10, and oil sealing base 7, sealing seat 9 are fixedly connected with anti-dust seat 10, concrete can connect for bolt, also connects by other forms.Oil sealing base 7 and oil sealing 8 form grease proofing part, and sealing seat 9 and seal ring form part against pressure, and anti-dust seat 10 and dust ring 6 form dust-proof part, in addition the supporting effect of grommet 5 grade.Sealing application of installation is when plunger pump, and plunger moves back and forth through the through hole in the middle of each assembly.In normal conditions, sealing device plays sealing and barrier effect to the lubricant oil of pump case inside and outside silt respectively by oil sealing 8, dust ring 6; Serious in fluid end packing component wear, when high-pressure liquid is sprayed onto power end along plunger, seal ring can play barrier effect to high-pressure liquid, and dust ring 6 also can play certain barrier effect to high-pressure liquids such as cement slurrys simultaneously, thus avoids pump power end to damage.Certainly, above-mentioned seal arrangement also by changing the size of matrix 1 and each black box to meet the piston type part of different size, can reach the motive sealing effect of convection cell.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. a seal ring, it is characterized in that, comprise matrix (1), the first elastic component (4) and the supporting element (3) for supporting, described matrix (1) offers groove, described supporting element (3) is fixedly installed in described groove, described first elastic component (4) is arranged between described supporting element (3) and the madial wall of described groove, and during by fluid impact, described first elastic component (4) applies towards the power of axis direction to described matrix (1).
2. seal ring according to claim 1, it is characterized in that, described first elastic component (4) is V-type spring, the opening of described V-type spring is towards the notch direction of described groove, and the opening two ends of described V-type spring offset with described pedestal (1) and described supporting element (3) respectively along the radial direction of described seal ring.
3. seal ring according to claim 1 and 2, it is characterized in that, comprise the second elastic component (2) be arranged between described supporting element (3) and described groove outer side wall further, and the elastic force of described second elastic component (2) acts on described matrix (1) and described supporting element (3).
4. seal ring according to claim 3, is characterized in that, described second elastic component (2) is coil spring.
5. seal ring according to claim 4, is characterized in that, described supporting element (3) cross section is radially T-shaped.
6. seal ring according to claim 5, is characterized in that, described supporting element (3) is metallic support.
7. seal ring according to claim 6, is characterized in that, the material of described matrix (1) is teflon.
8. a seal arrangement, it is characterized in that, comprise the seal ring as described in any one of claim 1-7, comprise the dust ring (6) of the notch side being arranged at described groove further, the inner side of described dust ring (6) is provided with lip limit (11), and the opening direction of described lip limit (11) deviates from the notch of described groove, between described seal ring and described dust ring (6), be provided with the grommet (5) for supporting described seal ring and described dust ring (6).
9. seal arrangement according to claim 8, it is characterized in that, comprise two the described seal rings be set up in parallel, the groove notch of two described seal rings is towards the opposite, and the one side relative with described groove notch of the matrix of two described seal rings mutually near.
10. seal arrangement according to claim 9, it is characterized in that, the quantity of described dust ring (6) is two, be placed in the both sides of two described seal rings respectively, and between each described dust ring (6) and described seal ring, be provided with the grommet (5) for supporting described seal ring and described dust ring (6).
11. seal arrangements according to claim 8, it is characterized in that, comprise oil sealing base (7) further, oil sealing (8), sealing seat (9) and anti-dust seat (10), described oil sealing (8) is placed in described oil sealing base (7), described seal ring is placed in described sealing seat (9), described dust ring (6) is placed in described anti-dust seat (10), described sealing seat (9) is placed between described oil sealing base (7) and described anti-dust seat (10), and described oil sealing base (7), described sealing seat (9) is fixedly connected with described anti-dust seat (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070030.4A CN104595493A (en) | 2015-02-10 | 2015-02-10 | Sealing device and sealing ring thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070030.4A CN104595493A (en) | 2015-02-10 | 2015-02-10 | Sealing device and sealing ring thereof |
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| CN104595493A true CN104595493A (en) | 2015-05-06 |
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| CN201510070030.4A Pending CN104595493A (en) | 2015-02-10 | 2015-02-10 | Sealing device and sealing ring thereof |
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