CN102418797B

CN102418797B - High-performance aneroid/piston type ball valve

Info

Publication number: CN102418797B
Application number: CN 201110165021
Authority: CN
Inventors: 白龙山
Original assignee: 白龙山
Current assignee: Zhejiang Yonglian Valve Co., Ltd.
Priority date: 2011-06-06
Filing date: 2011-06-06
Publication date: 2013-12-25
Anticipated expiration: 2031-06-06
Also published as: CN102418797A

Abstract

The invention discloses two 'high-performance aneroid/piston type ball valves', which belong to inventions and creations about ball valves and aim to solve the problems that hard and flexible sealing rings of the conventional mechanical 'O'-shaped or 'V'-shaped ball valve both produce over-high rotating torque in the opening and closing of the valve so as to seriously abrade a ball surface and a sealing ring particularly when the valve is frequently opened and closed to easily cause sealing failures and leakage, shorten service life of the valve and make the operation of the valve time-consuming and labor-consuming. In invention, a hydraulic transmission principle is developed for the first time, and two independent combined sealing rings are provided and are an 'aneroid-type sealing ring' and a 'piston-type sealing ring' respectively; in addition, a matched 'gear rack hydraulic device' is provided. An execution mechanism forms two different novel ball valve structures with the 'aneroid-type sealing ring' and the 'piston-type sealing ring' respectively, and the 90-degree rotation of the ball surface in the opening and closing of a ball body is free from friction, thereby improving sealing performance and simultaneously ensuring service life. A gap is formed between the ball surface and the sealing ring, thereby greatly decreasing the opening and closing torque of the ball body, making the operation labor-saving and making the closing reach a zero-leakage standard.

Description

High-performance aneroid/piston type ball valve

High-performance aneroid/piston type ball valve is the innovation and creation that belong to the ball valve aspect.Its task is for existing traditional mechanical type " O " type or " V " type ball valve, in use hard, soft seal circle all exists valve opening, to close moment of rotation excessive, especially to valve opening, while closing frequent movement, heavy wear appears in sphere and sealing ring material, easily cause seal failure, cause to leak, valve is short working life, and during operating cost, effort., in high temperature and heavy caliber applications, also there are many unfavorable factors in therefore existing ball valve, and its main cause is that traditional ball-valve structure is restricted, and can not meet the needs of high request or special occasions.

The present invention is the development and Application hydraulic transfering principle first, two kinds of independent combined seal rings separately are provided, a kind of is that " bellows-type seal ring " another kind is " piston type seal ring ", a kind of supporting " gear rack hydraulic pressure installation " also is provided thus, this actuator has formed respectively two kinds of different ball valve structures from " bellows-type seal ring " or " piston type seal ring ", the former is low temperature for its application, the normal temperature occasion, the latter is middle temperature, the high temperature occasion, it is not limited by nominal pressure and bore, at spheroid, open, close in 90 degree transfer processes, seal ring and sphere are with gapped all the time, do not produce the sassafras that rubs, while only having spheroid to forward closed position to, seal ring is the obvolvent sphere, formation zero leakage sealing, therefore ball valve is opened, close moment very little, operation saves time, laborsaving.It has thoroughly changed the performance of conventional ball valve, has fundamentally solved the drawback that ball valve exists.Also extended working life, thereby greatly widened Applicable scope simultaneously.

The present invention is using upper valve rod as rotating shaft, and the lower valve rod double-screw bolt is as positioning shaft, and in the outer Fang Xin of upper valve rod and spheroid, Fang Xin is bonded into one.Adopt in addition half sectional view, in the valve body left side, a set of " bellows-type seal ring " is set, right side arranges a set of " piston type seal ring ", two cover ring structure differences, can be applied for various occasions, (half sectional view becomes whole-cutaway view) a set of " bellows-type seal ring " becomes two covers in use, be separately positioned on the valve body both sides, symmetrical.Another set of " piston type seal ring " also becomes two covers, is separately positioned on the valve body both sides, symmetrical.That is: quadruplet identical seal ring in twos, formed respectively " high-performance bellows ball valve " or " high-performance piston type ball valve ".Two kinds of ball valves all are provided with movable valve seat and seal ring in the valve body both sides, it promotes by bellows or piston, and its bellows carries out roll welding by metal ' U ' shape diaphragm and doughnut-shaped steel plate, and " U " shape mouth is shut, form bellows, coordinated by two-pad again, together be placed in the middle of flange, by flange, pushed down sealing, make the bellows pressurize, hydraulic oil enters the bellows chamber through bellows valve body silk hole, acts on the soft seal valve seat soft seal circle pressurized and sphere is formed to sealing." bellows-type seal ring ball valve " is on the inwall of valve body both sides in addition, also be provided with dividing plate, on dividing plate, have outside thread and valve body internal thread to be bonded into one, while damaging for the soft seal loop material, promptly inject the use of sealing compound by plug, so ball valve has obtained temporary sealing guarantee." piston type seal ring ball valve " respectively is provided with movable valve seat and seal ring except the valve body both sides are the same, also be provided with pallet push rod and piston push rod, and filler, stuffing nut lid, cylinder bracket and fastening screw trip bolt, wherein fastening screw trip bolt becomes cylinder bracket 120 degree with oil cylinder, uniform being fixed on the piston valve body side, control hard seal ring and the action of sphere clutch type.

The present invention is provided with a pair of radial bearing and is used for locating the revolution of upper valve rod left and right in valve body in flange hole, filler seat top also is provided with support and is used for fixing actuator and thrust-bearing simultaneously, makes the vertical location of upper valve rod not produce movement.The lower valve rod double-screw bolt is by the locking of flange gland, and location is controlled by a pair of radial bearing in the mesopore of spheroid lower end and top thrust-bearing again in its top.Therefore by the location to above 2 axles, will make spheroid fix firmly, and rotate around upper and lower axle.Meanwhile on support top, be provided with again by supporting " gear rack hydraulic pressure installation ", this actuator adopts gear, tooth bar and screw rod, piston, oil cylinder to form " gear rack hydraulic pressure installation ", during use, apply screw rod power with handwheel, tooth bar drives output gear, drives upper valve rod and rotates, cause spheroid open and close 90 degree conversions, now piston is synchronized with the movement thereupon, by the hydraulic oil release of cylinder chamber or boost, with the requirement that meets valve opening or close.Therefore it supports the use with two kinds of ball valves, has realized that seal ring is without friction, and the valve moment of rotation is very little, easy to operate, very laborsaving, and this valve long service life, closes and can reach the zero leakage index.

Compact structure of the present invention, novelty, not only high temperature resistant but also low temperature resistant, and also not pressure difference restriction, good seal performance, using scope is wide, is the current desirable ball valve across the epoch.

Figure of description 1 is structure master's sectional view of the present invention.In figure: 1. valve body; 2. plug; 3. dividing plate; 4. doughnut-shaped steel plate; 5. soft seal circle; 6. bellows valve body; 7. spheroid; 8. soft seal valve seat; 9.U shape diaphragm; 10. two-pad; 11. upper valve rod; 12. filler seat; 13. support; 14,41. thrust-bearings; 15. gland nut; 16. secondary tooth bar; 17. positioning wheel; 18. positioning shaft; 19. main tooth bar screw rod; 20. cover plate; 21. output gear; 22,33,42. radial bearings; 23. stop screw; 24. oil pipe; 25. housing; 26,28,31,40. double-screw bolts; 27,29,32,39. nuts; 30. filler; 34. hard seal valve seat; 35. piston push rod; 36. pallet push rod; 37. piston valve body; 38. hard seal ring; 43. lower valve rod double-screw bolt; 44 flange glands.

Fig. 2 is the partial enlarged drawing of I in Fig. 1.In figure: 16. secondary tooth bars; 17. positioning wheel; 18. positioning shaft; 19. main tooth bar screw rod; 20. cover plate; 21. output gear; 22. radial bearing; 23. stop screw; 25. housing; 11. upper valve rod; 26. double-screw bolt; 27. nut; 14. thrust-bearing; 15. gland nut; 13. support.

Fig. 3 is the sectional view of A-A in Fig. 1.In figure: 45. screw rod guard shields; 46. handwheel; 47. bearing gland; 48. rack bar nut; 19. main tooth bar screw rod; 49. pipe connects; 16. secondary tooth bar; 17. positioning wheel; 18. positioning shaft; 25. housing; 50. cylinder bottom plate; 51. piston; 52. plug; 53. oil pressure interface; 54.O shape seal ring; 55. oil cylinder; 23. stop screw; 11. upper valve rod; 21. output gear; 56. stage clip 57. back-up ring 58. thrust-bearings.

Fig. 4 is the partial enlarged drawing of II in Fig. 1.In figure: 8. soft seal valve seat; 9.U shape diaphragm; 59. oil pressure interface 10. two-pad 4. doughnut-shaped steel plate 1. valve bodies; 2. plug; 3. dividing plate; 7. spheroid; 5. soft seal circle.

Fig. 5 is the partial enlarged drawing of III in Fig. 1.In figure: 38. hard seal rings; 7. spheroid; 34. hard seal valve seat 1. valve body 37. piston valve body 60. fastening screw trip bolt 61. oil cylinders; 62. oil pressure interface; 35. piston push rod 63. bellowss; 64. cylinder bracket 65. stuffing nut lids; 66. filler; 36. pallet push rod.

Annotate: 1. bellows-type seal ring: bellows, by U-shaped diaphragm 9 and doughnut-shaped steel plate 4, is shut the U-shaped mouth by roll welding, forms withstand voltage bellows.Wherein doughnut-shaped steel plate 4 inside are provided with the oil circuit through hole, and it communicates with oil pressure interface 59.Stud with soft seal circle 5 on soft seal valve seat 8 in addition, it is integrally formed, and with bellows component film box-type sealing ring.As shown in accompanying drawing 1 and accompanying drawing 4.

2. piston type seal ring: by hard seal valve seat 34; Piston push rod 35; Pallet push rod 36; Hard seal ring 38, and the compositions such as oil cylinder 61 and cylinder bracket 64.Wherein on hard seal valve seat 34, stud with hard seal ring 38, it also is integrally formed, and forms the piston type seal ring with above-mentioned parts.As shown in accompanying drawing 1 and accompanying drawing 5.

3. gear rack hydraulic pressure installation: plan view is by secondary tooth bar 16; Positioning wheel 17; Positioning shaft 18; Main tooth bar screw rod 19; Cover plate 20; Output gear 21; Radial bearing 22; Stop screw 23; Housing 25 compositions such as grade.As shown in Figure 1.Plan view back plan view is by cylinder bottom plate 50; Piston 51; Plug 52; Oil pressure interface 53; O-ring seals 54; Oil cylinder 55 compositions such as grade.As shown in Figure 3.The plan view front plan view is by stage clip 56; Back-up ring 57; Thrust-bearing 58; Screw rod guard shield 45; Handwheel 46; Bearing gland 47; Rack bar nut 48; Main tooth bar screw rod 19; Pipe connects 49 compositions such as grade.As shown in Figure 3.Wherein secondary tooth bar 16 center lines are provided with through hole, and it is enclosed within on main tooth bar screw rod 19, are slidably matched with it, and guide main tooth bar and output gear 21 engagements, and gear, tooth bar movement clearance, controlled by positioning wheel 17 simultaneously.Output gear 21 is fixing up and down by a pair of radial bearing 22, and when it rotates, inner Fang Xin and valve rod foreign side core are bonded into one, and the band ovable valve stem synchronously rotates.

Below in conjunction with accompanying drawing, embodiments of the invention are illustrated to its working principle.

One. the bellows-type seal ring ball valve

1. during valve opening:

Rotate counterclockwise handwheel 46, main tooth bar screw rod 19 is moved down, now stage clip 56 loosens gradually, secondary tooth bar 16 keeps original position, the hydraulic oil of bellows chamber returns to rapidly cylinder chamber simultaneously, U-shaped diaphragm 9 starts to shrink, soft seal valve seat 8 is relaxed withdrawal, then soft seal circle 5 is thrown off with sphere, tooth bar on main tooth bar screw rod 19 meshes with output gear 21 put in place (main tooth bar lower end surface contacts with secondary tooth bar 16 upper-end surfaces) thereupon, so far secondary tooth bar 16 also starts to move down, and output gear 21 forwards spheroid 7 to 90 degree by 0 degree simultaneously, causes valve opening.

2. during valve closing:

Clockwise rotate handwheel 46, main tooth bar screw rod 19 is moved up, forward output gear 21 to 0 while spending from 90 degree, stuck by stop screw 23, secondary tooth bar 16 stops moving up simultaneously, so main tooth bar screw rod 19 is thrown off secondary tooth bar 16, continues to move up, and promotes piston 51 output of the hydraulic oil of cylinder chamber is boosted, be delivered to the bellows chamber through oil pipe 24, act on U-shaped diaphragm 9, soft seal valve seat 8 pressurizeds, by distending, make soft seal circle 5 and sphere close contact, form sealing, valve can be closed.

Two. the piston type seal ring ball valve

1. during valve opening:

Rotate counterclockwise handwheel 46, main tooth bar screw rod 19 is moved down, now stage clip 56 loosens gradually, secondary tooth bar 16 keeps original position, the hydraulic oil of the piston cylinder chamber on piston valve body 37 returns to rapidly cylinder chamber simultaneously, piston push rod 35 and pallet push rod 36 are retracted, so hard seal valve seat 34 loses pressure-acting, hard seal ring 38 is thrown off sphere, tooth bar on main tooth bar screw rod 19 and output gear 21 engagements put in place thereupon, and making secondary tooth bar 16 also start to move down, output gear 21 forwards spheroid 7 to 90 degree by 0 degree simultaneously, causes valve opening.

2. during valve closing:

Clockwise rotate handwheel 46, main tooth bar screw rod 19 is moved up, forward output gear 21 to 0 while spending from 90 degree, stuck by stop screw, secondary tooth bar 16 stops moving up simultaneously, so main tooth bar screw rod 19 is thrown off secondary tooth bar 16 and is continued to move up, promote piston 51, the output of the hydraulic oil of cylinder chamber is boosted, by oil pipe 24, be delivered to the piston cylinder chamber on piston valve body 37, act on 3 uniform pistons, piston push rod 35 and pallet push rod 36 pressurizeds are pushed into, make hard seal ring 38 and sphere close contact, form sealing, valve can be closed.

The outstanding problems such as the present invention's " high-performance aneroid/piston type ball valve ", be to the change of conventional ball valve matter and tremendous lifting, and these two kinds of ball valves, thoroughly solved the ball valve moment of torsion excessive, and sealing life is short.It will become the leading products of following valve industry, and particularly to remote pipeline valve, meaning is very great, and its market prospects are good, widely applicable, is the forward-looking novel product across the epoch.

Claims

1. a high-performance aneroid/piston type ball valve, mainly comprise valve body (1), plug (2,52), dividing plate (3), doughnut-shaped steel plate (4), soft seal circle (5), bellows valve body (6), spheroid (7), soft seal valve seat (8), U-shaped diaphragm (9), two-pad (10), upper valve rod (11), filler seat (12), support (13), thrust-bearing (14, 41, 58), gland nut (15), secondary tooth bar (16), positioning wheel (17), positioning shaft (18), main tooth bar screw rod (19), output gear (21), radial bearing (22, 33, 42), stop screw (23), oil pipe (24), gear rack hydraulic device casing (25), hard seal valve seat (34), piston push rod (35), pallet push rod (36), piston valve body (37), hard seal ring (38), lower valve rod double-screw bolt (43), flange gland (44), screw rod guard shield (45), handwheel (46), bearing gland (47), rack bar nut (48), pipe connects (49), cylinder bottom plate (50), piston (51), oil cylinder (55), stage clip (56), oil pressure interface (59), cylinder bracket (64), stuffing nut lid (65), the compositions such as filler (66), it is characterized in that:

Valve body (1) both sides respectively are provided with bellows valve body (6), between their flange, be provided with U-shaped diaphragm (9) and doughnut-shaped steel plate (4), adopt roll welding that two parts are formed to one, form bellows, and coordinated by two-pad (10), by described flange, pushed down sealing, doughnut-shaped steel plate (4) inside is provided with the oil circuit through hole in addition, and it communicates with oil pressure interface (59);

Respectively be provided with 1 on the inwall of valve body (1) both sides and have the dividing plate (3) be threaded, it forms emergency sealing injecting system with the plug (2) that is located at valve body (1) both sides;

Valve body (1) both sides respectively are provided with piston valve body (37), its side is provided with 3 piston cylinder and the accessory cylinder brackets (64) that become 120 degree to distribute, piston push rod (35) and pallet push rod (36), wherein pallet push rod (36) also is provided with filler (66) and stuffing nut lid (65) on piston valve body (37), make it to form sealing with pallet push rod (36), guarantee that medium is without leakage;

Valve body (1) bottom is provided with lower valve rod double-screw bolt (43) and flange gland (44), wherein flange gland (44) upper-end surface also is provided with the symmetrical flat post of projection, it and lower valve rod double-screw bolt (43) lower end fillistered joint merge locking, lower valve rod double-screw bolt (43) top also is provided with thrust-bearing (41) and radial bearing (42) in addition, and, for spheroid (7) provides location and rotates lubricated use, valve body (1) top is provided with upper valve rod (11); Radial bearing (33); Filler seat (12); Support (13); Thrust-bearing (14); Gland nut (15), wherein 2 radial bearings (33) and 1 thrust-bearing (14), by upper valve rod (11) location, rotate it and lubricate freely;

Be provided with output gear (21) in gear rack hydraulic device casing (25); Secondary tooth bar (16); Main tooth bar screw rod (19); Positioning wheel (17); Positioning shaft (18); Radial bearing (22) and stage clip (56), wherein on secondary tooth bar (16) center line, also be provided with through hole, it is enclosed within on main tooth bar screw rod (19), by stage clip (56) and positioning wheel (17), controlled, guide main tooth bar and output gear (21) engagement, gear rack hydraulic device casing (25) front is provided with pipe and connects (49); Rack bar nut (48); Thrust-bearing (58); Bearing gland (47); Handwheel (46) and screw rod guard shield (45), wherein main tooth bar screw rod (19) top is provided with tooth bar, middle part is provided with circular pin, bottom is provided with trapezoidal screw, it coordinates with rack bar nut (48), form the extending means of main tooth bar screw rod (19), gear rack hydraulic device casing (25) back is provided with cylinder bottom plate (50); Piston (51); Plug (52) and oil cylinder (55) and oil pipe (24), wherein on cylinder bottom plate (50), also be provided with outside thread and oil cylinder (55) internal thread and be bonded into one, then be fixed on housing (25) side by screw, therefore just formed the hydraulic power of hydraulic oil output;

Valve body (1) both sides arrange two covers separately independently " bellows-type seal ring " or " piston type seal ring ", spheroid (7) both sides are respectively equipped with the movable valve seat of quadruplet, wherein two covers are soft seal valve seat (8), a separate set of is hard seal valve seat (34), and every two cover valve seats stud with respectively soft seal circle (5) and hard seal ring (38), during use according to the occasion requirement, moderate selection is hard, soft seal circle ball valve, also be provided with matched actuating mechanism " gear rack hydraulic pressure installation " on valve body (1), it and " bellows-type seal ring ", " piston type seal ring " formed two kinds of different ball valve structures, simultaneously under the driving of " gear rack hydraulic pressure installation ", adopt hydraulic pressure transfer and the work of moment output substep, control " bellows-type seal ring ball valve " and " piston type seal ring ball valve ", make it form clutch type sealing.