CN2418317Y - Anti-theft high-temp and high-pressure metal hard-sealing ball valve - Google Patents

Abstract

The utility model relates to an anti-theft high-temperature and high-pressure metal hard sealing ball valve is composed of a valve body, a support frame, a valve rod, an assembled ball body, a hand wheel, etc., wherein, the lower end of the support frame is connected with the valve body, and the upper end is connected with the hand wheel which is provided with a valve rod nut. A filler case is positioned in the support frame, and a thermal sense element and combined fillers are arranged in the filler case. The valve rod passes through an inner cavity of the ball valve. The lower end of the valve rod is connected with the assembled ball body, and the upper end of the valve rod is connected with a valve body nut. The assembled ball body formed by assembling a middle wedge ball body and ball cap bodies on both sides is positioned in the inner cavity of the valve body, and forms a metal sealing pair by being matched with a valve seat. The hand wheel is operated to drive the valve rod, which causes the ball valve to be opened and closed. The utility model has the advantages of convenient operation, reliable sealing, high temperature resistance, high pressure resistance, energy saving, theft resistance, etc. and is especially suitable for being used in high-temperature and high-pressure operating conditions and places.

Description

Anti-theft High Temperature High Pressure metal hard-sealing ball valve

The utility model relates to ball valve, the anti-theft High Temperature High Pressure metal hard-sealing ball valve that particularly uses under the high temperature and high pressure condition condition.

At present, the home and abroad is now all adopted nonmetal flexible material or is added flexible metallic material manufacturing with the sealing of ball valve.Because of nonmetal soft sealing material material pine, molten point are low, generally can only under≤200 ℃ operating mode, use; Additional flexible metallic seal material can not adapt to the high pressure operating mode because of elastic force, generally can only use under the operating mode of≤10MPa.So the overwhelming majority selects stop valve for use in the high temperature and high pressure condition place, but stop valve exists keying speed slow again, and it is big to close moment, and traffic channel is little, and fluid resistance is big, etc. defective, causes the loss and the waste of energy.In addition, now generally all be easy to dismounting with ball valve, when using in the open air, problems such as stolen take place in regular meeting.

The purpose of this utility model just be to provide a kind of easy to operate, sealing is reliable, high temperature high voltage resistant, energy-conservation, antitheft anti-theft High Temperature High Pressure metal hard-sealing ball valve.

The purpose of this utility model is achieved in that

This ball valve mainly is made up of valve body, support, valve rod, combination spheroid, handwheel etc., connects valve body in the support lower end, and the upper end connects the handwheel of being furnished with Stem Mut; Stuffing box is positioned at support, and stuffing box is with seal ring and shelves ring outward, and thermal sensible element and combined packing are housed in the stuffing box; Valve rod passes through whole ball valve inner chamber, and its lower end links to each other with the combination spheroid, and its upper end links to each other with Stem Mut, and packing press ring is inserted in valve rod and is pressed on the combined packing, and hold-down grid is inserted in valve rod and is pressed on the packing press ring; Positioning work piece is positioned on the hold-down grid, is connected with valve rod, and has tooth and handwheel tooth to match; The combination spheroid is three a lobes combination spheroid that is combined by separation beam spheroid and both sides ball-crown body, is positioned at body cavity, this spheroid generally and valve seat directly make by metal of the same race, fit in sealing pair.This valve adopts from top to bottom assembling method when assembling, all connecting part spot welding are at last fixed, and the external world can't be dismantled.During use, valve body is linked to each other with pipeline, be rotated counterclockwise handwheel, drive Stem Mut, upwards poppet stem is drawn the middle wedge spheroid of combination spheroid, loosen the combination spheroid, produce the gap at both sides ball-crown body and valve base chamber, at this moment, depress handwheel, compression handwheel spring makes the engagement of handwheel and positioning work piece, rotation hand wheel, utilize positioning work piece to drive valve rod interlock (rotation), make combination spheroid half-twist, at this moment make up the traffic channel and the valve channel of spheroid and connect (unlatching).If need close ball valve, need to repeat above-mentioned steps, and behind combination spheroid half-twist, need positive hour hands rotation hand wheel, make valve rod promote to make up the wedge spheroid of spheroid downwards, arrange the both sides ball-crown body, ball-crown body and valve seat are close to, the passage of choke valve body.

Owing to taked such scheme, this ball valve sealing is safe and reliable, realize metal and intermetallic hard sealing (ball-crown body and valve seat are metal), good sealing effect, but high temperature high voltage resistant, the highest can under≤600 ℃, 42MPa operating mode, the use, except that sealing pair had good sealing effect, ball valve originally between valve rod and stuffing box, had all been taked seal approach between stuffing box and the valve body, cause whole valve not have leakage point, reach energy-conservation effect.Owing to adopt assembling method, extraneous no detachment point when using, has tangible anti-theft effect in the open air.In addition, this ball valve is easy to operate, and all operations only needs hand wheel to finish, and under high temperature and high pressure condition, switching still reaches free and relaxed.

Be described further below in conjunction with drawings and Examples:

Accompanying drawing is a structural representation of the present utility model

Support 17 lower ends are connected with valve body 1, and the upper end is connected with handwheel 4; Stem Mut 5 matches with handwheel 4, and outer-hexagonal cooperates in general the employing, and nut sinks in the handwheel; Stuffing box 21 is positioned at support 17; Outside stuffing box 17, be with seal ring 23, shelves ring 22; Thermal sensible element 16 is housed in the stuffing box, and thermal sensible element generally adopts bimetallic strip, Packing seat 15, combined packing 18-20; In the combined packing 18 is the fiber packing, and 19 is the Expanded graphite circle, and 20 is the asbestos graphite cake, and general combined packing is 2 groups, adds sacrificial metal between group and group, to prevent the electrolytic corrosion to valve rod; Valve rod 13 passes the ball valve inner chamber, and its lower end links to each other with combination spheroid 2, and its upper end links to each other with valve body nut 5; Packing press ring 14 is inserted in valve rod 13, is pressed on the combined packing; Hold-down grid 11 is inserted in valve rod 13, is pressed on the packing press ring 14; Positioning work piece 9 is positioned on the hold-down grid 11, is connected with valve rod 13, and has tooth and handwheel tooth to match; Combination spheroid 2 is positioned at valve body 1 inner chamber, this spheroid is three valve structures, and the separation beam spheroid is wide at the top and narrow at the bottom, is provided with isometrical traffic channel in the middle of the wedge spheroid, bi-side flexibly connect with two ball-crown bodies respectively in addition, upwards mention the wedge spheroid, can unclamp the both sides ball-crown body, whole combination spheroid is diminished in valve body chamber inner volume, like this, just can freely rotate combination spheroid (be closed condition as shown in drawings, traffic channel and valve channel on its wedge spheroid are perpendicular), its both sides spheroid and valve seat match; Valve seat and combination spheroid according to the applying working condition difference, adopt the manufacturing of congeniality metal, and to alloyed steel, hardfacing alloy is to the hardfacing alloy manufacturing as alloyed steel.During assembling, Stem Mut 5 is sunk in the handwheel 4, insert positioning plate 6 from both sides, in the support 17 of packing into together after the combination, screw locking nut 7, sink to support 17 inner chambers after the spot welding of tossing about is fixing from support 17 the inners; The thermal sensible element 16 of in stuffing box 21, packing into, Packing seat 15, two groups of combined packing 18-20, group with organize between add sacrificial metal filler; Valve rod 13 is scurried into from stuffing box 21 bottoms, at stuffing box 21 overcoat upper sealing rings 23, and shelves ring 22; Support 17 puts stuffing box 21, in support 17 windows, is inserted in packing press ring 14 on the valve rod 13, and hold-down grid 11 connects positioning work piece 9, handwheel spring 8; Valve rod 13 upper ends screw in Stem Mut 5; Spheroid 2 be will make up and (connection of T type groove) on the valve rod 13, valve body 1 inner chamber of packing into hung over; Screw the middle head thread of support 17 and valve body 1, force seal ring 23 to expand tightening seals; Screw screw 12, compress hold-down grid 11 and packing press ring 14; After the pressure test, support 17 is fixed with valve body 1 spot welding.Above-mentioned assembling just can guarantee that the external world can't dismantle the ball valve component.

Claims (3)

1, anti-theft High Temperature High Pressure metal hard-sealing ball valve is made up of valve body, support, valve rod combination spheroid, handwheel etc., and it is characterized in that: support (17) lower end is connected with valve body (1), and the upper end is connected with handwheel (4), and Stem Mut (5) matches with handwheel (4); Stuffing box (21) is positioned at support (17), is with seal ring (23), shelves rings (22) outside stuffing box (17), thermal sensible element (16) is housed, Packing seat (15), combined packing (18-20) in the stuffing box (21) from bottom to top; Valve body (13) passes the ball valve inner chamber, and its lower end links to each other with combination spheroid (2), and its upper end links to each other with Stem Mut (5); Packing press ring (14) is inserted in valve rod (13) and is pressed on the combined packing, and hold-down grid (11) is inserted in valve material (13) and is pressed on the packing press ring (14); Positioning work piece (9) is positioned on the hold-down grid (11), is connected with valve rod (13), and has tooth and handwheel tooth to match; Combination spheroid (2) is positioned at valve body (1) inner chamber.

2, anti-theft High Temperature High Pressure metal hard-sealing ball valve according to claim 1, it is characterized in that: described combined packing is made up of three parts, is respectively fiber packing (18), Expanded graphite circle (19), asbestos graphite cake (20).

3, anti-theft High Temperature High Pressure metal hard-sealing ball valve according to claim 1, it is characterized in that: described combination spheroid is three valve structures, the separation beam spheroid is wide at the top and narrow at the bottom, is provided with isometrical traffic channel in the middle of the wedge spheroid, and bi-side flexibly connect with two ball-crown bodies respectively in addition.

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