CN202733041U - Ball valve seat - Google Patents
Ball valve seat Download PDFInfo
- Publication number
- CN202733041U CN202733041U CN 201220326916 CN201220326916U CN202733041U CN 202733041 U CN202733041 U CN 202733041U CN 201220326916 CN201220326916 CN 201220326916 CN 201220326916 U CN201220326916 U CN 201220326916U CN 202733041 U CN202733041 U CN 202733041U
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- Prior art keywords
- seal ring
- valve seat
- contact
- spheroid
- rubber
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Abstract
The utility model discloses a ball valve seat. The ball valve seat is provided with a grease injection hole, a sealing ring hollow cavity, an anti-explosion decompression groove, and a compression variation hollow cavity which are connected to form an integral organism. The ball valve seat effectively solves the problem that soft sealing materials burst at high pressure, can be used as a lubricating mechanism, complete sealing work, and reduce design difficulty and machining technologies, and has functions, which other valve seats do not have, in the same size. The ball valve seat is simple, compact and reasonable in structure. Compared with an existing valve seat, the ball valve seat is flexible in operation of opening and closing, high in sealing performance, long in service life, and high in safety coefficient.
Description
Technical field
The utility model relates to a kind of ball seat, is specifically related to a kind of rubber seal ring and adds the lubricated and emergency seal assembly dual-path sealed ball valve base of plug-in unit seal band.
Background technique
Existing ball seat has following 3 kinds:
1. the material such as domestic employing PEEK/PTFE/NYLON is inlaid into valve seat as sealing material with press-fit approach, is single sealing configuration.Such design sealing grade is low, can not satisfy high pressure sealing and gas seal requirement.
2. adopt rubber sealing abroad.Exemplify 2 inches namely 2 inches with lower valve base: answer the valve volume little, seat design limited space valve seat is without emergency seal assembly.When sealing surface damages dielectric leakage.
3. adopt the Split type structure design.The ball seat that is assembled into forms such as jump ring or screw threads by internal valve, outer valve, soft seal circle.Complex process, accessory are many.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of rubber seal ring to add the plug-in unit seal band with double-seal ball valve valve seat lubricated and emergency seal assembly.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of ball seat, valve seat are arranged between spheroid and the valve body, structure ringwise, and a side is the valve body surface of contact, and opposite side is the spheroid surface of contact, and described valve body surface of contact is provided with spring, and described spheroid surface of contact is conical surface.Rubber seal ring and plug seal ring have been arranged side by side on the described spheroid surface of contact.Described rubber seal ring external diameter is greater than described plug seal ring, and described rubber seal ring internal diameter equals described plug seal ring external diameter.
The rubber seal ring cross section of telling is three circular arcs.Rubber seal ring is 90 degree and is embedded in the valve seat cavity, and warp-wise contacts fully, laterally leaves to press to become cavity.The other end contacts with described spheroid, and this end face is corresponding with described spheroid surface of contact.
Described plug seal ring one end is embedded in the described valve seat, and the part external diameter contacts with the rubber seal ring bottom surface.The other end contacts with described spheroid, and this end face is corresponding with described spheroid surface of contact.
Further, described valve seat is provided with anti-riot decompressing groove.Described anti-riot decompressing groove is arranged between rubber seal ring and the plug seal ring, is arranged at plug seal ring external diameter, is communicated with plug seal annular space chamber.
Further, described seal ring cavity is arranged at upper bevel place, plug seal ring external diameter bottom surface.
Described rubber seal is fluorine rubber, and hardness is Shao Er A95～98 degree.
Described rubber seal is explosion-proof rubber, and hardness is Shao Er A95～98 degree.
Valve seat is provided with the greasing hole.It is characterized in that: described greasing hole is arranged on valve seat and contacts the B face with valve body, between O type sealing A ring and the O type sealing B ring, and vertical connection seal ring cavity.
Described valve seat is provided with to press and becomes cavity.It is arranged on rubber seal ring and is embedded in that the place, base angle is communicated with anti-riot decompressing groove in the valve seat cavity.
Described plug seal circle is polyether-ether-ketone resin.
Described plug seal circle is teflon.
Described plug seal circle is polycaprolactam.
The beneficial effects of the utility model are:
Greasing hole, seal ring cavity, anti-riot decompressing groove, pressure become cavity and are connected to form a complete body.Effectively solved soft sealing material high pressure explosion problem, can serve as lubrication mechanism, and finish seal operation.Reduce design difficulty, reduce processing technology, simple, compact and reasonable for structure; Compare with existing valve seat, open and close flexible operation, sealability is high, long service life, and safety coefficient is high.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and cooperate accompanying drawing to be described in detail as follows.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 the utility model annexation schematic representation;
Fig. 2 is M partial enlarged drawing among Fig. 1.
Number in the figure explanation: 1, valve seat, 1a, valve body surface of contact, 1b, spheroid surface of contact, 1a1, spring, 1a2, O shape sealing A ring, 1a 3, O shape sealing B ring, 1a4, valve body contact B face, 1b1, rubber seal, 1b2, plug seal circle, 1b3, explosion-proof decompressing groove, 1b4, press to become cavity, 1b5, seal ring cavity, 101, the greasing hole, 2, valve body, 3, spheroid.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
With reference to Fig. 1, shown in Figure 2, a kind of ball seat is arranged between spheroid 3 and the valve body 2, structure ringwise, a side is valve body surface of contact 1a, opposite side is spheroid surface of contact 1b, described valve body surface of contact 1a is provided with spring 1a1, and described spheroid surface of contact 1b is conical surface.Rubber seal ring 1b1 and plug seal ring 1b2 have been arranged side by side on the described spheroid surface of contact 1b.Described rubber seal ring 1b1 external diameter is greater than described plug seal ring 1b2, and described rubber seal ring 1b1 internal diameter equals described plug seal ring 1b2 external diameter.
The rubber seal ring 1b1 cross section of telling is three circular arcs.Rubber seal ring 1b1 is 90 degree and is embedded in the valve seat cavity, and warp-wise contacts fully, laterally leaves to press to become cavity 1b4.The other end contacts with described spheroid 3, and this end face is corresponding with described spheroid surface of contact 1b.
Described plug seal ring 1b2 one end is embedded in the described valve seat 1, and the part external diameter contacts with rubber seal ring 1b1 bottom surface.The other end contacts with described spheroid 3, and this end face is corresponding with described spheroid surface of contact 1b.
Further, described valve seat 1 is provided with anti-riot decompressing groove 1b3.Described anti-riot decompressing groove 1b3 is arranged between rubber seal ring 1b1 and the plug seal ring 1b2, is arranged at plug seal ring 1b2 external diameter, and chamber 1b5 is communicated with the plug seal annular space.
Further, described seal ring cavity 1b5 is arranged at upper bevel place, plug seal ring 1b2 external diameter bottom surface.
Described rubber seal 1b1 is fluorine rubber, and hardness is Shao Er A95～98 degree.
Described rubber seal 1b1 is explosion-proof rubber, and hardness is Shao Er A95～98 degree.
Valve seat 1 is provided with greasing hole 101.It is characterized in that: described greasing hole 101 is arranged on valve seat 1 and contacts B face 1a4 with valve body, between O type sealing A ring 1a2 and the O type sealing B ring 1a3, and vertical connection seal ring cavity 1b5.
Described valve seat 1 is provided with to press and becomes cavity 1b4.It is arranged on rubber seal ring 181 and is embedded in that the place, base angle is communicated with anti-riot decompressing groove 1b3 in the valve seat cavity.
Described plug seal circle 1b2 is polyether-ether-ketone resin.
Described plug seal circle 1b2 is teflon.
Described plug seal circle 1b2 is polycaprolactam.
Its working principle of the utility model and working procedure:
Shown in Figure 1 when opening plug seal ring 1b2 protection main seal ring 1b1, main seal ring 1b1 is in and the medium state of isolation, avoided fluid and solid particle to the erosion corrosion of main seal ring 1b1.When spheroid 3 rotated to 90 ° along the direction of arrow, ball valve import and outlet were blocked by spheroid 3 and are made it be in closed condition.The medium that has certain pressure under this state is full of import and spheroid 3 is produced the thrust of pointing to Way out, and the size of thrust is by the poor decision of inlet and outlet pressure.Ball valve in use, the rubber seal ring 1b1 on the valve seat and plug seal ring 1b2 and spheroid 3 surfaces belong to interference fit, make rubber seal ring 1b1 and line seal ring 1b2 and spheroid 3 Surface Contacts on the valve seat, form sealing; 1. in the poor little situation of inlet and outlet pressure, its sealability mainly relies on rubber seal ring 1b1 to guarantee, spheroid 3 weight rely on plug seal ring 1b2 to support.2. when inlet and outlet pressure is poor when increasing to a certain numerical value, spheroid 3 moves to Way out under the effect of medium thrust.Valve seat rubber ring seal ring 1b1 and plug seal ring 1b2 and spheroid 3 surfaces produce resiliently deformable, and area of contact increases.When valve seat and spheroid reached equilibrium of forces point, spheroid 3 stopped mobile, and this moment, valve seat 1 formed double sealings with spheroid 3 surfaces.Take rubber ring seal ring 1b1 as main, plug-in unit line seal ring 1b2 is auxiliary, thus the sealing of valve when guaranteeing that pressure difference is larger.This shows that under the pressure of design code, valve all has reliable sealing at any pressure stage.
When ball valve was opened, the pressure of import and export tended to balance, and rubber ring seal ring 1b1 and plug seal ring 1b2 and spheroid 3 area of contact reduce, and have reduced moment of torsion, make to operate more light and flexible.Under the valve closing state, because valve seat has plug seal ring 1b2 that spheroid 3 is supported and the design of explosion-proof decompressing groove 1b 3, rubber seal ring 1b1 is subjected to spheroid pressure to produce deformation and fills deformation cavity 1b4, and medium is discharged by explosion-proof decompressing groove 1b3, plug seal annular space chamber 1b5 and greasing hole 101 in the cavity.Make rubber seal ring 1b1 can cause serious extrusion-deformation in no instance, solved the soft sealing material high pressure explosion problem of conventional seals valve seat, and along with the wearing and tearing of sealing surface in the using process, be trapped in the rubber ring seal ring 1b1 that press to become in the cavity 1b4 can be in certain wear extent auto-compensation, overcome short defective of soft seal valve seat life-span in the prior art.
Greasing hole 101 links to each other with pressing change cavity 1b4 by seal ring cavity 1b5, anti-riot decompressing groove 1b3 straight down.In use opening and closing also is greasing: 101 inject lubricating grease to seal ring cavity 1b5 in the greasing hole, flow through to press and become cavity 1b4, enter explosion-proof decompressing groove 1b3, in the spheroid rotation process, thereby outer surface of spheroid has attached lubricating grease spheroid is lubricated.Rubber seal ring 1b1 is subjected to external force generation deformation during keying, fills and presses change cavity 1b4 that grease flow is lubricated spheroid 3 through explosion-proof decompressing groove 1b3 and seal ring cavity 1b5.The wearing and tearing of spheroid 3 with plug seal ring 1b1 and rubber ring seal ring 1b2 surface of contact have been reduced.Explosion-proof decompressing groove 1b3 avoids medium to wash away and causes lubricating grease to run off between plug seal ring 1b1 and rubber ring seal ring 1b2.The seal failure of double sealing ring: by greasing hole 101 inject the emergency sealing fat to seal ring cavity 1b5, the explosion-proof decompressing groove 1b3 that flows through, enter to press and become cavity 1b4, contact the prevention dielectric leakage fully with spheroid 3, finish seal operation.
Greasing hole 101 becomes a complete body with seal ring cavity 1b5, anti-riot decompressing groove 1b3, pressure change cavity shape 1b4.Effectively solved conventional softer sealing material high pressure explosion problem, can serve as lubrication mechanism, and finish seal operation.Reduce design difficulty, reduce processing technology, under equal volume, can finish the function that other valve seats do not have.
From test case, 2 inches glue seal rings add the plug-in unit seal ring and successfully pass through 2500 pounds of level tests with lubricated double-seal ball valve valve seat with emergency seal assembly in test room.Carried out 14 tests to being furnished with 2 inches valves of this valve seat of new generation under the 80psig pressure reaching, valve does not leak.Rubber seal ring and plug seal face do not have visible distortion.The artificial destruction sealing surface, emergency seal assembly work, valve leak stops.
Increase the valve seat volume: can design the adding graphite annulus, can design the change spring position, can design change greasing hole site.The above only is preferred embodiment of the present utility model for institute, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. ball seat, valve seat (1) is arranged between spheroid (3) and the valve body (2), structure ringwise, one side is valve body surface of contact (1a), opposite side is spheroid surface of contact (1b), described valve body surface of contact (1a) is provided with spring (1a1), described spheroid surface of contact (1b) is conical surface, rubber seal ring (1b1) and plug seal ring (1b2) have been arranged side by side on the described spheroid surface of contact (1b), described rubber seal ring (1b1) external diameter is greater than described plug seal ring (1b2), and described rubber seal ring (1b1) internal diameter equals described plug seal ring (1b2) external diameter; Described rubber seal ring (1b1) cross section is three circular arcs, rubber seal ring (1b1) is 90 degree and is embedded in the valve seat cavity, radially fully contact, laterally leave and press change cavity (1b4) the other end to contact with described spheroid (3), this end face is corresponding with described spheroid surface of contact (1b); Described plug seal ring (1b2) end is embedded in the described valve seat (1), the part external diameter contacts with rubber seal ring (1b1) bottom surface, the other end contacts with described spheroid (3), and this end face is corresponding with described spheroid surface of contact (1b).
2. ball seat according to claim 1, it is characterized in that: further, described valve seat (1) is provided with anti-riot decompressing groove (1b3), described anti-riot decompressing groove (1b3) is arranged between rubber seal ring (1b1) and the plug seal ring (1b2), be arranged at plug seal ring (1b2) external diameter, be communicated with plug seal annular space chamber (1b5).
3. ball seat according to claim 2 is characterized in that: further, described seal ring cavity (1b5) is arranged at upper bevel place, plug seal ring (1b2) external diameter bottom surface.
4. ball seat according to claim 1 is characterized in that: described rubber seal (1b1) is fluorine rubber, and hardness is Shao Er A95～98 degree.
5. ball seat according to claim 1 is characterized in that: described rubber seal (1b1) is explosion-proof rubber, and hardness is Shao Er A95～98 degree.
6. ball seat according to claim 1, further, valve seat (1) is provided with greasing hole (101), it is characterized in that: described greasing hole (101) is arranged on valve seat (1) and contacts B face (1a4) with valve body, between O type sealing A ring (1a 2) and the O type sealing B ring (1a 3), vertical connection seal ring cavity (1b5).
7. ball seat according to claim 1 is characterized in that: described valve seat (1) is provided with to press and becomes cavity (1b4), and it is arranged on rubber seal ring (1b1) and is embedded in that the place, base angle is communicated with anti-riot decompressing groove (1b3) in the valve seat cavity.
8. ball seat according to claim 1, it is characterized in that: described plug seal circle (1b2) is polyether-ether-ketone resin.
9. ball seat according to claim 1, it is characterized in that: described plug seal circle (1b2) is teflon.
10. ball seat according to claim 1, it is characterized in that: described plug seal circle (1b2) is polycaprolactam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220326916 CN202733041U (en) | 2012-07-09 | 2012-07-09 | Ball valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220326916 CN202733041U (en) | 2012-07-09 | 2012-07-09 | Ball valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733041U true CN202733041U (en) | 2013-02-13 |
Family
ID=47658742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220326916 Expired - Fee Related CN202733041U (en) | 2012-07-09 | 2012-07-09 | Ball valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733041U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734488A (en) * | 2012-07-09 | 2012-10-17 | 张业宝 | Ball valve base |
| CN103335103A (en) * | 2013-07-12 | 2013-10-02 | 昆山新莱洁净应用材料股份有限公司 | Sealing mechanism without dead angle |
-
2012
- 2012-07-09 CN CN 201220326916 patent/CN202733041U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734488A (en) * | 2012-07-09 | 2012-10-17 | 张业宝 | Ball valve base |
| CN103335103A (en) * | 2013-07-12 | 2013-10-02 | 昆山新莱洁净应用材料股份有限公司 | Sealing mechanism without dead angle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20140709 |
|
| EXPY | Termination of patent right or utility model |