阅读说明：本技术 一种上装式管线球阀 (Top-mounted pipeline ball valve ) 是由 师晓东 黄赛荣 杨金波 杨海峰 胡海超 于 2021-09-29 设计创作，主要内容包括：一种上装式管线球阀,阀体的通道两侧上方设有缺口榫槽,缺口榫槽平面上设有限位孔,缺口榫槽上装有支撑板,支撑板上对称设有防松孔、螺纹孔Ⅰ,限位螺钉通过防松孔后与预紧螺母相配合,预紧螺母的侧面设有与预紧工装上的销轴相配合的盲孔,预紧螺母的端部设有与限位螺钉相配合的螺纹孔Ⅱ,球体的上平面与支撑板的下平面间设有推力轴承Ⅱ,阀座支撑圈上设有密封圈Ⅰ、密封圈Ⅱ、密封圈Ⅲ、注脂孔、凹槽,阀体的正向外壁面设有注脂口、放空口和排污口。发明的有益效果是,本结构的上装式管线球阀具有高可靠性和密封性。(The utility model provides a top-mounted pipeline ball valve, the passageway both sides top of valve body is equipped with the breach tongue-and-groove, be equipped with spacing hole on the breach tongue-and-groove plane, the backup pad is equipped with on the breach tongue-and-groove, the symmetry is equipped with anti-loosening hole in the backup pad, screw hole I, stop screw cooperatees with pretightening nut after through anti-loosening hole, pretightening nut's side is equipped with the round pin axle matched with blind hole on the frock with the pretensioning, pretightening nut's tip is equipped with screw hole II with stop screw matched with, be equipped with thrust bearing II between spheroidal last plane and the lower plane of backup pad, be equipped with sealing washer I on the disk seat support ring, sealing washer II, sealing washer III, annotate the fat hole, the recess, the positive outer wall face of valve body is equipped with annotates fat mouth, drain and drain. The upper-mounted pipeline ball valve has the beneficial effects of high reliability and sealing property.)

1. A top-mounted pipeline ball valve comprises a valve body, a ball body, an upper valve shaft, a lower valve shaft, a limiting screw, a limiting pin, a valve seat support ring, a spring seat and an anti-rotation block, and is characterized in that notched mortises are arranged above two sides of a channel of the valve body, limiting holes are arranged on the planes of the notched mortises, a support plate is arranged on each notched mortises, anti-loosening holes and threaded holes I are symmetrically arranged on the support plate, the limiting screw is matched with a pre-tightening nut after passing through the anti-loosening holes, blind holes matched with a pin shaft on a pre-tightening tool are arranged on the side face of the pre-tightening nut, threaded holes II matched with the limiting screws are arranged at the end part of the pre-tightening nut, a sliding bearing is arranged between the pre-tightening nut and the spring seat, a boss abutted against the sliding bearing is arranged on the spring seat, a spring hole is arranged on the back face of the spring seat, a limiting groove is arranged on the excircle of the limiting pin after passing through the limiting hole, be equipped with bearing I, thrust bearing I on the contact surface of spheroidal lower part and lower valve shaft, spheroidal upper portion is equipped with the round platform, is equipped with bearing II between round platform and backup pad, is equipped with thrust bearing II between the lower plane of spheroidal last plane and backup pad, and spheroidal upper portion is equipped with two screw holes III that correspond with screw hole I in the backup pad, be equipped with sealing washer I, sealing washer II, sealing washer III, notes fat hole, recess on the disk seat lock ring, sealing washer I, sealing washer II, notes fat hole and valve body butt, sealing washer III and spheroid butt, the recess with prevent the lug looks butt on the commentaries on classics piece, prevent changeing piece and valve body welded connection, the positive outside wall of valve body is equipped with notes fat mouth, drain and drain.

2. The top-loading pipeline ball valve as claimed in claim 1, wherein the number of the sealing rings I is two, and the sealing ring I near the ball abuts against the thrust pad.

3. The top-loading pipeline ball valve as claimed in claim 2, wherein the sealing ring II is made of fireproof graphite.

4. A top-loading line ball valve as claimed in claim 3, wherein the grease injection port is located between the two seals i.

5. The top-loading pipeline ball valve as recited in claim 4, wherein the grease injection ports are symmetrically distributed on both sides of the vertical central axis of the valve body, the drain port is located at an upper portion of the vertical central axis of the valve body, and the drain port is located at a lower portion of the vertical central axis of the valve body.

6. The top-loading pipeline ball valve as claimed in claim 5, wherein the sealing ring III is rolled and edged after being loaded into the valve seat supporting ring.

7. The top-loading pipeline ball valve as recited in claim 6, wherein the valve body is provided with four symmetrical lifting lugs.

8. The top-loading pipeline ball valve as recited in claim 7, wherein the flat shaft of the upper valve shaft is provided with an anti-static device.

Technical Field

The invention relates to a ball valve, in particular to an upper-mounted pipeline ball valve.

Background

At present, the assembly mode of the commonly used upper-mounted pipeline ball valve structure is that most of the assembly modes are that the valve seat is pulled away from the ball body from two sides of the channel to realize the upper mounting of the ball body, a special tool needs to be manufactured, the assembly is complicated, and when the connection mode is welding connection, the valve can be maintained only by cutting off the valve from the pipeline, and the structure does not have the function of online maintenance;

the existing threaded valve seat top-mounting structure has the defects that the excircle of the nut is a single stress point when the nut is rotated to pre-tighten to extrude the spring seat, the assembling mode is labor-consuming during assembling, the spring cannot be compressed to the designed size, the pre-tightening specific pressure is insufficient, and the medium can leak from the space between the ball body and the sealing ring.

Meanwhile, the existing upper-mounted pipeline ball valve applied to high pressure and large caliber has large operation torque, large parameters of the driving device selected by the valve with the same specification and model, and high manufacturing cost. The traditional top-mounted lifting ring is arranged at a middle flange bolt, and the design has defects. The middle flange bolt abutting against the hanging ring needs the weight of the valve, so that the possibility that the bolt is broken and fails exists, the bolt is inevitably loosened in the lifting process of the valve, the stress of a flange sealing gasket in the pipeline ball valve is uneven, and the possibility of medium leakage exists. Therefore, the upper-mounted line ball valve having high reliability and sealing property is lacking in the market at present.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides an upper-mounted pipeline ball valve.

The invention adopts the technical scheme that the upper-mounted pipeline ball valve comprises a valve body, a ball body, an upper valve shaft, a lower valve shaft, a limiting screw, a limiting pin, a valve seat supporting ring, a spring seat and an anti-rotating block, wherein notched mortises are arranged above two sides of a channel of the valve body, limiting holes are formed in the planes of the notched mortises, a supporting plate is arranged on each notched mortises, anti-loosening holes and threaded holes I are symmetrically formed in the supporting plate, the limiting screw is matched with a pre-tightening nut after passing through the anti-loosening holes, a blind hole matched with a pin shaft on a pre-tightening tool is formed in the side surface of the pre-tightening nut, a threaded hole II matched with the limiting screw is formed in the end part of the pre-tightening nut, a sliding bearing is arranged between the pre-tightening nut and the spring seat, a boss abutted against the sliding bearing is arranged on the spring seat, a limiting groove is formed in the back surface of the spring seat, the limiting pin is abutted against the limiting groove after passing through the limiting hole, a bearing I and a bearing I are arranged on the contact surface of the lower portion of the ball body and the lower valve shaft, Thrust bearing I, spheroidal upper portion is equipped with the round platform, be equipped with bearing II between round platform and backup pad, be equipped with thrust bearing II between the lower plane of spheroidal last plane and backup pad, spheroidal upper portion is equipped with two screw holes III that correspond with screw hole I in the backup pad, be equipped with sealing washer I on the disk seat lock ring, sealing washer II, sealing washer III, annotate the fat hole, a groove, sealing washer I, sealing washer II, annotate fat hole and valve body butt, sealing washer III and spheroid butt, the recess with prevent the lug looks butt on the commentaries on classics piece, prevent commentaries on classics piece and valve body welded connection, the positive outer wall face of valve body is equipped with annotates fat mouth, drain and drain.

Preferably, the number of the sealing rings I is two, and the sealing ring I close to the ball abuts against the thrust pad.

Preferably, sealing washer II is the fire prevention graphite material.

Preferably, the grease injection hole is positioned between the two sealing rings I.

Preferably, annotate fat mouth symmetric distribution in the vertical axis both sides of valve body, drain is located the upper portion on the vertical axis of valve body, and the drain is located the lower part on the vertical axis of valve body.

Preferably, the sealing ring III is wrapped by adopting a rolling and wrapping process after being arranged in the valve seat supporting ring.

Preferably, four symmetrical lifting lugs are arranged on the valve body.

Preferably, the flat shaft of the upper valve shaft is provided with an antistatic device.

The invention has the advantages that the upper-mounted pipeline ball valve has high reliability and sealing performance, the assembly and disassembly of the valve internal part from the middle way can be realized through the pre-tightening tool, the upper mounting of the valve in the true sense is realized, and the valve has the function of online maintenance; a sliding bearing is designed between the pre-tightening nut and the spring seat, so that the extrusion friction force of the thread upper-mounted valve seat structure is reduced, and the assembly is simpler and more labor-saving; the limiting pin is abutted with the limiting groove after passing through the limiting hole, and when the pretightening nut and the valve seat support ring rotate relatively, the spring seat does not rotate circumferentially but only moves radially, so that the problem of torsional deformation of the spring due to the rotation of the spring seat is avoided, and the rigidity integrity of the spring is ensured; thrust from a high-pressure medium to the valve shaft is absorbed by the lower valve shaft and the support plate at the upper part of the sphere, so that the upper valve shaft and the lower valve shaft only bear the torsional force of the driving device in the opening and closing process and do not bear the thrust of the medium, the torque of the valve is further reduced, and the manufacturing cost is reduced; the design of the fireproof graphite ring ensures that the internal leakage of the valve in the case of fire does not exceed the specification of API6FA and API 607; four symmetrical lifting lugs are designed on the valve body, so that the defect that the lifting lugs are arranged at the middle flange bolt of the large-caliber upper-mounted ball valve is overcome, and the design is more reasonable and excellent; the arrangement of the anti-static device leads static electricity to be led into the outside in time, and safety accidents caused by static spark are prevented.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of a valve body;

FIG. 4 is a schematic structural view of the support plate;

FIG. 5 is a schematic view of a pre-tensioned nut;

FIG. 6 is a schematic view of a spring seat;

FIG. 7 is a cross-sectional view of portion B of FIG. 6;

FIG. 8 is a schematic diagram of a sphere;

FIG. 9 is a schematic view of the structure of the seat support ring;

FIG. 10 is a schematic structural view of an anti-rotation block;

fig. 11 is a schematic structural view of a pre-tightening tool.

In the figure: 1. a valve body; 2. a sphere; 3. an upper valve shaft; 4. a lower valve shaft; 5. a limit screw; 6. a spacing pin; 7. a gap mortise; 8. a limiting hole; 9. a support plate; 10. anti-loosening holes; 11. a threaded hole I; 12. pre-tightening the nut; 13. blind holes; 14. a threaded hole II; 15. a spring seat; 16. a sliding bearing; 17. a boss; 18. a spring hole; 19. a limiting groove; 20. a bearing I; 21. a thrust bearing I; 22. a circular truncated cone; 23. a bearing II; 24. a thrust bearing II; 25. a valve seat support ring; 26. a sealing ring I; 27. a sealing ring II; 28. a grease injection hole; 29. a sealing ring III; 30. a rotation prevention block; 31. a grease injection port; 32. a vent port; 33. a sewage draining outlet; 34. a thrust pad; 35. a groove; 36. a bump; 37. lifting lugs; 38. an antistatic device; 39. and a threaded hole III.

Detailed Description

As shown in the figure, a top-mounted pipeline ball valve, including valve body 1, spheroid 2, go up valve shaft 3, lower valve shaft 4, stop screw 5, spacer pin 6, disk seat supporting ring 25, spring holder 15, prevent changeing piece 30, the passageway both sides top of valve body 1 is equipped with breach tongue-and-groove 7, be equipped with spacing hole 8 on the 7 planes of breach tongue-and-groove, be equipped with backup pad 9 on the breach tongue-and-groove 7, the symmetry is equipped with anti-loosening hole 10 in the backup pad 9, screw hole I11, stop screw 5 cooperatees with pretightening nut 12 after through anti-loosening hole 10, the side of pretightening nut 12 be equipped with the round pin axle matched with blind hole 13 on the pretensioning frock, the tip of pretightening nut 12 be equipped with stop screw 5 matched with screw hole II 14, prevent that spheroid 2 is not hard up to take place at the not hard up emergence of switch in-process disk seat supporting ring 25, avoid appearing the phenomenon that the spring pretightning force is not enough. A sliding bearing 16 is arranged between the pre-tightening nut 12 and the spring seat 15, the spring seat 15 is provided with a boss 17 abutted against the sliding bearing 16, the back of the spring seat 15 is provided with a spring hole 18, the excircle of the spring seat is provided with a limiting groove 19, the limiting pin 6 is abutted against the limiting groove 19 after passing through the limiting hole 8, when the pre-tightening nut 12 and the valve seat support ring 25 rotate relatively, the spring seat 15 cannot rotate circumferentially and only moves radially, the problem that the spring is subjected to torsional deformation due to the rotation of the spring seat 15 is avoided, and the rigidity integrity of the spring is ensured.

A bearing I20 and a thrust bearing I21 are arranged on the contact surface of the lower part of the ball body 2 and the lower valve shaft 4, and an anti-static device 38 is arranged on the flat shaft of the upper valve shaft 3, so that generated static electricity is led into the outside in time, and safety accidents caused by static spark are prevented. The upper portion of spheroid is equipped with round platform 22, is equipped with bearing II 27 between round platform 22 and backup pad 9, is equipped with thrust bearing II 24 between the lower plane of the upper plane of spheroid 2 and backup pad 9, has reduced the frictional force between spheroid 2 and backup pad 9. The upper portion of spheroid 2 is equipped with two screw holes III 39 that correspond with screw hole I11 on the backup pad 9, use when being used for convenient hoist and mount during assembly or maintenance, be equipped with sealing washer I26 on the valve seat backing ring 25, sealing washer II 27, sealing washer III 29, annotate fat hole 28, recess 35, sealing washer I26, sealing washer II 27, annotate fat hole 28 and valve body 1 butt, sealing washer I26 quantity is two, be close to I26 butt thrust pads 34 of sealing washer of spheroid 2, sealing washer II 27 is the fire prevention graphite material, the rule that the internal leakage satisfies API6FA and API607 when making the valve catch fire, the security when having guaranteed catching fire. Annotate fat hole 28 and be located between two sealing washer I26, sealing washer III 29 and 2 butts of spheroid, adopt the roll-in technology of borduring to bordure after sealing washer III 29 packs into disk seat lock ring 25, avoid the medium to take place to leak between sealing washer III 29 and the disk seat lock ring 25, recess 35 and the lug 36 looks butt on preventing changeing the piece 30, prevent changeing piece 30 and valve body 1 welded connection, guarantee that disk seat lock ring 25 does not take place the rotation in a circumferential direction, the outer wall of valve body 1's forward is equipped with annotates fat mouth 31, drain 32 and drain 33, annotate fat mouth 31 symmetric distribution in the vertical axis both sides of valve body 1, drain 32 is located the upper portion on the vertical axis of valve body, drain 33 is located the lower part on the vertical axis of valve body. When the valve leaks after being used for a long time, the valve can be subjected to grease filling treatment through the grease filling port 31 on the valve body 1, so that the leakage rate of the valve is reduced. After the valve is in service for a period of time, the pressure accumulated in the valve cavity can be discharged through the vent 32, and the safety performance of the valve is improved. Four symmetrical lifting lugs 37 are designed on the valve body, so that the defect that the lifting lugs 37 are arranged at the middle flange bolt of the large-caliber top-mounted pipeline ball valve is overcome, and the safety performance of the valve is ensured.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.