CN2893348Y

CN2893348Y - Three-position five-way hand reversing air valve

Info

Publication number: CN2893348Y
Application number: CN 200620096312
Authority: CN
Inventors: 林春照
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-18
Filing date: 2006-04-18
Publication date: 2007-04-25
Anticipated expiration: 2016-04-18

Abstract

The utility model relates to a three-position five-way manual reversing gas valve, which can be used in the gas route control of brake of water-wheel generator set or other gas routes. The panel of the metal disk valve core is provided with four non-penetrable round holes with the same size. The inner parts of two pairs of round holes are mutually communicated. Five round holes are arranged on the disk valve body, whose central hole is aligned with that of the valve core. The rotating shaft of the valve core threads a unilateral thrust ball bearing with sphere seat ring, a single butterfly spring, and a rotating shaft hole of the core cover in turn, then the rotating shaft is fixed with a turning handle seat. One turning handle is fixed on the handle seat. The valve core cover is fixed with the valve body by a fastening piece. A roll ball allocating and a limiting pin and a slide groove are arranged between the outer flank of the valve core cover and the turning handle. Operation can be done easily by operator standing upright on site. The utility model also has the advantages of less tube, small volume and compact structure.

Description

A kind of three-position five-way manual reverse of direction air valve

Affiliated technical field

The utility model relates to a kind of three-position five-way manual reverse of direction air valve, is applied to the gas circuit control or the control of other gas circuit of water power hydraulic generator unit stopping brake.

Background technique

Water power hydraulic generator unit rotating speed drops to rated speed 35%～40% o'clock, and the tach signal relay can send the braking electrical signal, requires the pressurized air of 0.3MPa～1Mpa source of the gas to lead to the active chamber of stopping brake, makes stopping brake work, quickens compressor emergency shutdown.Behind compressor emergency shutdown, the tach signal relay then can send another electrical signal, requires stopping brake involution original position state.The brake component of stopping brake is connected with the piston of cylinder by connecting rod and is subjected to piston actuated.Piston both sides in the cylinder body are active chamber I and active chamber II, and both all have a suction port and relief opening.When braking, promote the active chamber I exhaust close of piston deceleration, the suction port air inlet, simultaneously, the Exhaust Open of active chamber II, inlet close.When stopping brake resetted, the relief opening of active chamber I was then opened, inlet close, simultaneously, the exhaust close of active chamber II, suction port.

In order to realize above-mentioned braking and involution, bi-bit bi-pass ball valve control unit is adopted in the power station, cities and counties at present, thus the ball valve control unit that uses not only quantity is many, the complex operation of requirement, and the total pipeline length that is connected between each ball valve is very long.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of three-position five-way hand-operated direction valve easy and simple to handle that helps saving gas path pipe length, requirement is provided.

The purpose of this utility model can reach like this: a kind of three-position five-way manual reverse of direction air valve, it is characterized in that having on the circular metal plate valve core plate face four circular holes that do not penetrate that size is identical, be distributed in foursquare three summits and in the heart, internal communication between the circular hole of a pair of adjacent vertex, center hole communicates with circular hole inside, the 3rd summit; The circular metal plate valve body has five circular holes, be distributed in foursquare four summits of the equal length of side and in the heart, the center hole on the circular metal plate spool aligns mutually with the center hole on the circular metal plate valve body; The rotating shaft of circular metal plate spool fixes with the turning handle seat after passing the rotary shaft hole of single direction thrust ball bearing, a monolithic butterfly spring, circular metal plate valve core housing of a dribbling face seat ring successively, and a turning handle is fixed on the turning handle seat; The circular metal plate valve core housing fixes with the circular metal plate valve body with fastening piece; The turning handle seat is provided with positioning ball and 180 ° of position-limitting pins, and the circular metal plate valve core housing outside then has 180 ° of limited impressions and 0 °, 90 °, 180 ° three steel ball positioning holes.

In order further to strengthen the sealability of circular metal plate valve body with surface of contact between the circular metal plate spool, feature of the present utility model also is to inlay five fixing circular hole teflon plectanes of a usefulness sunk screw on the contacted circular metal plate valve body of circular metal plate spool surface of contact, and each hole aligns respectively with the circular hole on the circular metal plate valve body.

The utlity model has following advantage:

1, operator only need the original place operation of attentioning, and connecting tube greatly reduces;

2, volume is little, compact structure.

Description of drawings

Fig. 1 is the utility model structural representation

1 is the circular metal plate valve body among the figure, the 3rd, and circular metal plate valve core housing, the 5th, turning handle seat, the 7th, circular metal plate spool, the 9th, monolithic butterfly spring, the 13rd, the single direction thrust ball bearing of dribbling face seat ring, 15 is five circular hole teflon plectanes, and b2, b1, O, A, P represent five circular holes

Fig. 2 is five circular hole teflon plectanes with 15 being five circular hole teflon plectanes among the circular metal plate spool structure combining schematic representation figure, the 7th, the circular metal plate spool, b2 ', b1 ', O ', A ', five circular holes of P ' expression, M, N, K, L represent that four do not penetrate circular hole, dotted line table " connection ".

Fig. 3 is that the utility model spool is in the mutual connection situation of five circular holes under 0 °, 90 °, 180 ° three working position

Embodiment

A kind of three-position five-way manual reverse of direction air valve, have four circular hole M, N, K, L of not penetrating that size is identical on circular metal plate spool (7) the plate face, be distributed in foursquare three summits and in the heart, internal communication between circular hole M, the N of a pair of adjacent vertex, center hole L communicates with circular hole K inside, the 3rd summit; Circular metal plate valve body (1) has five circular hole b2, b1, O, A, P, be distributed in foursquare four summits of the equal length of side and in the heart, the center hole L on the circular metal plate spool (7) aligns mutually with the center hole (A) on the circular metal plate valve body (1); The rotating shaft of circular metal plate spool (7) fixes with turning handle seat (5) after passing the rotary shaft hole of single direction thrust ball bearing (13), a monolithic butterfly spring (9), circular metal plate valve core housing (3) of a dribbling face seat ring successively, and a turning handle (11) is fixed on the turning handle seat (5); Circular metal plate valve core housing (3) fixes with circular metal plate valve body (1) with fastening piece; Turning handle seat (5) is provided with positioning ball and 180 ° of position-limitting pins, and circular metal plate valve core housing (3) outside then has 180 ° of limited impressions and 0 °, 90 °, 180 ° three steel ball positioning holes.

In order further to strengthen the sealability of circular metal plate valve body (1) with surface of contact between the circular metal plate spool (7), can inlay five fixing circular hole teflon plectanes (15) of a usefulness sunk screw on the contacted circular metal plate valve body of circular metal plate spool (7) (1) surface of contact, plectane each hole b2 ', b1 ', O ', A ', P ' align respectively with each circular hole b2, b1, O, A, the P on the circular metal plate valve body.

When handle (11) is in vertical 90 ° of positions, the same respectively b2 ' of M on the spool, N, K, L, b1 ', O ', A ' over against since b2 ', b1 ', O ', A ', the same b2 of P ', b1, O, A, P respectively over against, b2 and b1 are communicated with, O and A are communicated with, and P then ends.

When handle (11) is in 180 ° of positions, the same respectively O ' of the M on the spool, N, K, L, b2 ', P ', A ' over against since b2 ', b1 ', O ', A ', the same b2 of P ', b1, O, A, P respectively over against, b2 and O are communicated with, P and A are communicated with, b1 then ends.

When handle (11) is in 0 ° of position, the same respectively b1 ' of the M on the spool, N, K, L, P ', b2 ', A ' over against since b2 ', b1 ', O ', A ', the same b2 of P ', b1, O, A, P respectively over against, b1 and P are communicated with, b2 and A are communicated with, O then ends.

For braking and the involution that realizes stopping brake, only need to be connected with active chamber I, the active chamber II of stopping brake respectively with two breathing pipe I, breathing pipe II.0.3Mpa～1Mpa air pressure source of the gas is inserted P circular hole and b1 circular hole with pipeline, and breathing pipe I inserts the A circular hole, and breathing pipe II inserts the b2 circular hole, inserts the O circular hole with the direct connecting pipe of atmosphere.When operator are in the face of turning handle seat (5) recently, away from the position of valve body (1), rotating counterclockwise turning handle (11) is that spool (7) is in 0 ° of working position on earth the time, and clockwise rotating promptly is that spool (7) is in 180 ° of working positions on earth.During 180 ° of working positions, source of the gas is connected with breathing pipe I gas is charged into the I of working room promotion piston, and simultaneously, breathing pipe II connects with relief opening O circular hole, and b1 ends, and the II of working room is to airborne release gas.Change hands handle (11) when rotation, make spool be in 90 ° of working positions, at this moment, the b1 circular hole is connected with source of the gas, oppositely promotes piston reset so gas enters the II of working room by the b2 circular hole through breathing pipe II, simultaneously, P ends, and breathing pipe I is communicated with atmosphere, and the I of working room is to airborne release gas.When spool (7) was in 0 ° of working position, b1 and P connected, and b2 connects with A, and the expression source of the gas is not connected with breathing pipe I or breathing pipe II; But two breathing pipe I and ventilation II connect, and O circular hole and ambient atmosphere are cut off, and two working room's internal communication are described, have the effect that makes the mutual balance of piston pressure at both sides.

Claims

1, a kind of three-position five-way manual reverse of direction air valve, it is characterized in that having on circular metal plate spool (7) the plate face four circular hole M, N, K, L of not penetrating that size is identical, be distributed in foursquare three summits and in the heart, internal communication between circular hole M, the N of a pair of adjacent vertex, center hole L communicates with circular hole K inside, the 3rd summit; Circular metal plate valve body (1) has five circular hole b2, b1, O, A, P, be distributed in foursquare four summits of the equal length of side and in the heart, the center hole L on the circular metal plate spool (7) aligns mutually with the center hole (A) on the circular metal plate valve body (1); The rotating shaft of circular metal plate spool (7) fixes with turning handle seat (5) after passing the rotary shaft hole of single direction thrust ball bearing (13), a monolithic butterfly spring (9), circular metal plate valve core housing (3) of a dribbling face seat ring successively, and a turning handle (11) is fixed on the turning handle seat (5); Circular metal plate valve core housing (3) fixes with circular metal plate valve body (1) with fastening piece; Turning handle seat (5) is gone up and is set position steel ball and 180 ° of position-limitting pins, and circular metal plate valve core housing (3) outside then has 180 ° of position-limitting pin sliding recess and 0 °, 90 °, 180 ° three steel ball positioning holes.

2, a kind of three-position five-way manual reverse of direction air valve according to claim 1 is characterized in that inlaying five fixing circular hole teflon plectanes (15) of a usefulness sunk screw on the contacted circular metal plate valve body of circular metal plate spool (7) (1) surface of contact.