Seal insert for ball valve, ball valve seat and ball valve

FIELD: construction.

SUBSTANCE: sealing insert has the multi-layer structure in which graphite layers alternate with metal sheets. The metal sheets are represented, for example, by steel sheets. The outer parts of the sealing insert are formed by the graphite layers. There are versions for making a ball valve seat with such a sealing insert, and a ball valve with such a seat.

EFFECT: Improving the tightness of the ball valve, especially while operating under high temperature conditions and in the presence of fluid media containing solid particles suspended therein.

31 cl, 4 dwg

 



 

Same patents:

FIELD: machine building.

SUBSTANCE: inventions group relates to valves manufacturing and is intended for use as metal seal to ensure tightness of the ball valves. The metal seal (50) for valves (10) of ball (30) type contains a ring body (51) and a ring shoulder (52) with face (52a) for relative contact with ball (30) surface. The mentioned ring body (51) is thick in longitudinal direction and is rigid. The mentioned face (52a) to ensure relative contact contains deepened radial grooves (53). There is ball valve with mentioned metal seal (50).

EFFECT: inventions group improves tightness during the valve use at high work pressures and very high and/or very low temperatures.

7 cl, 12 dwg

Ball valve // 2551711

FIELD: machine building.

SUBSTANCE: invention relates to valve industry, namely to remotely controlled ball valves, and is designed for use under cryogenic temperatures, for example, in rocket engineering for start and cut-off of components in engine accessories. A ball valve comprises a body 1 with an inlet reducing coupling 2, an outlet reducing coupling 26 with a hole, a sphere valve 3 with a spline opening and a groove, a shaft 4, a shaft 4 seal and a lower support 5. The groove is provided in the inlet reducing coupling 2 and a seal in the form of a gasket 6 is mounted in it. The seal interacts with the groove surface in the reducing coupling 2 and the edge of the gasket 6 with the sphere valve 3. The shaft 4 is installed at ball bearings 8. A ball bearing 8 interacting with the lower support 26 is mounted in the groove of the sphere valve 3. The inner surface of the gasket 6 edge is provided with an offset with conical surface parallel to the tangent line to the sphere valve 3 circumference.

EFFECT: invention is aimed at design simplification, reduction of turning moment of the sphere valve with the shaft; improvement of the ball valve tightness at large flow passages at operation under cryogenic temperatures of components, and longer service life of the ball valve.

1 dwg

Valve // 2542774

FIELD: machine building.

SUBSTANCE: valve contains body with coaxial input and output holes, two seats with sealing cone surface, shutdown element in form of two separate segments with sealing spherical surfaces. The segments are arranged with eccentricity to opposite sides relatively to axis of the input and output holes of the body. Each segment has inserted interfaced elements in form of the spring bushing and cylindrical bushing with key slot interacting during rotation with spindle tail and shaft with key respectively. Each segment connection with shaft ensures coaxial location of sealing surfaces of segments and seats. The spring bushings ensure rotation of segments until coincidence of their sealing spherical surfaces with cone surfaces of seats and additional pressing. Lines of the spindle tail contact with spring bushings coincide with axis of the sealing surfaces of seats.

EFFECT: increased double-side sealing of valve at the gayer closing end due to additional pressing of each segment to the seat.

2 cl, 3 dwg

Ball valve // 2521701

FIELD: machine building.

SUBSTANCE: ball valve comprises a casing with an inlet hole and an outlet hole and a supporting surface on its lower part, a seat with conical sealing surface, a part taken-out from a globe valve with spherical surface, a lamp with a gland, a drive with reciprocating rod and a device to provide for the interaction of the sealing surfaces of the globe valve and the casing seat. The casing is equipped by the second seat set opposite to the first seat. The globe valve is made from two movable segments with disks. Sealing surfaces are provided on the disk. The movable segments are interconnected pivotally via an axis set in the casing supporting surface. In the upper part each segment is connected pivotally to the lower end of the rod through the introduced levers with axes. The said introduced device consists of a nut with nonlocking thread which is rigidly fixed in the drive slider and interacts with the respective rod thread, and a set of disk springs set with preload in the lamp casing.

EFFECT: improved leakproofness of a globe valve and, on the whole, longer service life of fittings at the operation in main pipelines with large diameters and flows of working medium with abrasive inclusions and low drive forces.

9 cl, 3 dwg

Ball valve // 2517467

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to aerospace engineering, and can be used as hand-driven shutoff valve in weightlessness and under cryogenic temperatures. Ball valve consists of the body with inlet and outlet unions and two seats with through surfaces with spherical surfaces for interaction with flow opening ball shutoff element for rod ledge to fit in. Said seat is spring loaded on the side of inlet union. Seats are composed by seal elements. Said seat on inlet union side is fitted in seal element composed of moving sleeve. Seat is spring loaded by plate washer via sealing element. Detachable backup seal is arranged on the side of rotary mechanism. Said detachable backup seal is composed by threaded cup with sealing surface and plug-in cork seat.

EFFECT: higher valve tightness in operation of cryogenic temperatures, no-problem operation with loose parts in weightlessness.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: valve with contact pressure adjustment comprises a valve casing (100), a ring-shaped holder (300) of the valve seat, a resilient member (400), a ball (200), an adjustment member (500) with a pair of adjustment rings (510) and an adjustment key (520) between them. In the casing (100) there is a hollow main line connector (110) and an inner space communicating with the main line. The ring-shaped holder (300) is fitted by a valve seat (310), installed on the inner circular surface of the main line connector (110) and is sliding in the direction of the inner space in the casing (100). The resilient member (400) presses the holder (300) in the direction of the inner space of the casing (100). The ball (200) for liquid flow control is installed in the inner space of the casing (100) and touches the valve seat (310). The adjustment member (500) is installed on the inner circular surface of the main line connector (110). The pair of adjustment rings (510) is set so that to be aligned with the direction of compression and extension of the resilient member (400) and to rest against the main line connector (110), the rings are designed for adjustment of the resilient member (400) length due to compression or extension of the resilient member (400). The adjustment key (520) is set between the adjustment rings (510) to adjust the distance between the adjustment rings (510).

EFFECT: simplification of adjusting the contact pressure between the ball and the valve seat in assembly in order to set the contact pressure corresponding to the medium in which the valve is used.

4 cl, 10 dwg

Ball valve // 2486395

FIELD: machine building.

SUBSTANCE: ball valve includes a body with inlet, outlet and drain adapters, a ball gate with a shaft and a lower support, ball gate seal, shaft seal, a spring-loaded rack interacting with a gear wheel of the shaft and along the edge with the drive stock. Drain adapter axis is located at an angle and passes through the centre of the ball gate. Ball gate seal is made in the form of a ring with trapezoidal section. In the body perpendicular to inlet and outlet adapters there is a groove with a wall, in which a hole and a groove are made. Support sleeve is located in the groove. On the shaft there installed is a seal in the form of a ring of trapezoidal section with inner groove interacting with the support sleeve and along the edge with the body wall edge. Drain seal is made in the form of a cuff. The cuff is installed on cylindrical surface of the drain adapter and interacts through a sealing edge to the ball gate.

EFFECT: reduction of turning moment of the gate with the shaft; improvement of the valve service life and its tightness at operation under conditions of high inlet pressure and low temperatures of components.

2 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: bellow ball valve with an upper connector includes a body connected to a top cover plate, to inlet and outlet branch pipes, and a ball plug installed on the shaft through spring-loaded seats with contact surface in the form of a ball belt. A damper is installed between the ball plug at the bottom and the shaft. At the top, between the plug and the stock there installed is a converter of back-and-forth movement to rotational movement without any displacement of force transfer axs. The converter consists of a separator with at least two slots structurally made at a certain angle for installation of rolling bodies (balls) and external framework. The latter has a collar fixed between support roller bearings. Inside the separator there arranged is a stock having a base, on which there made are slots similar to slots of the separator for arrangement of rolling bodies (balls). A collar is made on the stock. One end of the bellow assembly is welded to that collar. The other end of the bellow assembly is attached to the cover plate by means of a lens through a stressed multilayered toroid-shaped sealing element.

EFFECT: providing the possibility of using the above valve for operation with corrosive and radioactive working media characterised with high parameters; improving reliability and durability of power plants without constant maintenance of valves.

4 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: valve consists of case (2) with axial channel (3), of spherical rotary plug (6), of seat (15), of lug (31), of slots (55, 56) and of devices for equalising fluid medium between inlet and outlet sides of seat before valve opening. Plug (6) rotates in the case between closed and open positions and has through orifice (10). Seat (15) is positioned on the inlet side and has central pass (16). It is installed in the channel of the case before the plug and performs progressive travels along axis (3). The seat is compressed to the plug by means of elastic device (27). Lug (31) in seat (15) projects in the direction of the plug. First slot (55) in the plug interacts with the lug, when the plug is in a closed position. Second slot (56) in plug (6) interacts with lug (31), when plug (6) is in an opened position. First slot (55) is at a distance from second slot (56) at angle (α) equal from 70° to 80°.

EFFECT: reduced wear of valve, its increased pressure tightness at low and medium pressure and simplified operation.

10 cl, 7 dwg

FIELD: power engineering.

SUBSTANCE: pipeline valve for power engineering objects is characterised by high parametres of working mediums - temperature up to 560°C, pressure up to 40 MPa, and is intended to isolate flows. Ball valve with upper joint comprises body with the following components joined to it by threaded connections - upper flange, inlet and outlet nozzles and ball plug. Plug is installed onto spring-loaded seats with contact surfaces in the form of ball belt. Spring-loaded seats are installed into additional circular bushes equipped with circular collars. These bushings are sealed along end surface relative to body of ball valve. Specified contact surfaces of seats are arranged as at least double-contour along width of ball belt. Contours on surface of ball belt are separated by at least one circular bore. Additional circular bushings are installed coaxially to seats and are fixed on the latter along threaded surface with the possibility to transfer pressing force to mentioned seals. In seat, in zone of threaded contact surface of additional bushing and seat, there is at least one through channel arranged as connecting to circular bore. Seals between end surface of additional circular bushings and body are arranged as gland seals.

EFFECT: expansion of temperature range and pressure range for medium, where ball valve is used, increased reliability and durability.

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: inventions group relates to valves manufacturing and is intended for use as metal seal to ensure tightness of the ball valves. The metal seal (50) for valves (10) of ball (30) type contains a ring body (51) and a ring shoulder (52) with face (52a) for relative contact with ball (30) surface. The mentioned ring body (51) is thick in longitudinal direction and is rigid. The mentioned face (52a) to ensure relative contact contains deepened radial grooves (53). There is ball valve with mentioned metal seal (50).

EFFECT: inventions group improves tightness during the valve use at high work pressures and very high and/or very low temperatures.

7 cl, 12 dwg

Valve unit // 2540345

FIELD: machine building.

SUBSTANCE: valve unit comprises a valve body, a valve seat (11, 12) set in the inner chamber of the valve body, and a valve plug (2) which can move relatively to the valve seat (11, 12). The valve seat (11, 12) includes the first seat (11) and the second seat (12) which are set in longitudinal direction. The valve plug (2) has the first contact part (21) and the second contact part (22). The first contact part (21) can contact with the first valve seat (11) and form a seal. The second contact part (22) includes an annular protrusion. The latter is made as capable of deformation after being pressed into the second seat (12). The second contact part (22) can form a seal by contacting with the second seat (12) by means of the deformed protrusion (20'). The valve body (1) is fitted by a blocking part to block the valve plug (2).

EFFECT: provision of sealing action of the valve plug and valve seat resulting in no necessity in exact machining of the valve plug and the valve seat.

11 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: group of inventions refers to piping valves, and namely to safety valves, and intended to be used as a device for pressure equalization. The stem assembly for valves contains a stem, sleeve, vertical support, set slot, sealing surface around the slot, socket with wedge surface, and multiple channels for passing of fluid medium flow. The stem from one end interacts with driving cam for controlling the fluid medium flow through the valve. From the other end the stem interacts with the sleeve. The rod enters the slot. The sleeve is located with a possibility of interaction with the socket of vertical support or is located at a distance from the socket of the vertical support. The sleeve contains the wedge sealing surface, recess and seal located in the named recess. The named wedge sealing surface of the sleeve and the named seal are intended for tight engaging with the wedge surface of the socket of the vertical support. There is an internal valve using the named stem assembly.

EFFECT: group of inventions is aimed at improvement of reliability of operation with ensuring of redundant seal of conjugate metal surfaces of the stem assembly.

14 cl, 13 dwg

FIELD: machine building.

SUBSTANCE: distributing valve (10) with valve element (12) opening and closing seat (28), interacting with valve part (22) of distributing valve (10), which releases pressure from high pressure chamber (26) that is under the pressure prevailing in the system and to which seat (28) corresponds or supplies pressure. Surface (44) restricting the seat and restricted with edge (40) that restricts the seat passes on seat (28) between valve element (12) and valve part (22). Surface (44) restricting the seat is made on valve part (22). Edge (40) restricting the seat restricts cavity (46) on valve part (22), which restricts the contact surface. Some part of contact surface (30) is provided with protective wear-resistant coating (60). Cavity (46) restricting the contact surface separates some part of contact surface (30) with protective wear-resistant coating (60) from part (64) that does not have such a coating.

EFFECT: simpler manufacture and higher manufacturing accuracy of the valve edge restricting the seat, and improved wear resistance of the seat as a whole.

6 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: fluid medium valve includes the following: a valve body having a curved inner surface for installation of a seat ring and a seat ring having a sealing surface for receiving the moved control component and a curved surface located opposite the sealing surface for connection to the curved inner surface of the valve body. The seat ring is adjacent to the valve body with possibility of being offset. Curved inner surface of the valve body corresponds to curved surface of the seat ring. Curved inner surface of the valve body and curved surface of the seat ring are either spherical, or conical, or elliptical.

EFFECT: proposed device and method of alignment of the seat ring position in the valve exclude the possibility of leakage caused with misalignment of position of valve components.

22 cl, 4 dwg

Air valve gate // 2459128

FIELD: machine building.

SUBSTANCE: valve gate is arranged at inlet chamber to be fitted on valve seat in working fluid direction. Said gate comprises valve with nonmetallic seal in annular groove and seal retainer. Said seal is fitted to displace axially. Elastic elements are arranged between groove bottom and seal. End faces of seal and valve body on seat side are configured to allow end face of closed valve to stay in contact with body end face and seal end face to stay in contact with body seat. Clearance exists between seal and retainer. Seal inner diameter is sealed by sliding seal.

EFFECT: higher reliability.

1 dwg

Stop valve // 2445537

FIELD: construction.

SUBSTANCE: stop valve comprises a casing 1 with an outlet nozzle 2, an inlet nozzle 3, connected to the casing 1, a spindle 10 with a drive 9, a stem 12 with a stop element 14 and a seat 5. The sealing surface 6 of the seat 5 is made as conical with exceeding of its cone angle above the cone angle of the conical sealing surface 15 of the stop element 14. The sealing surface 17 of the casing 1 and the sealing surface 16 of the inlet nozzle 3 are made as conical with exceeding of the cone angle of the sealing surface 17 of the casing 1 above the cone angle of the sealing surface 16 of the inlet nozzle 3. The specified exceeding of the cone angle of sealing surfaces 6 and 17 of the seat 5 and the casing 1 above the cone angle of the sealing surfaces 15 and 16 of the stop valve 14 and the inlet nozzle 3 makes 2…3°±1°.

EFFECT: invention provides for higher tightness of connection and increased reliability of valve operation, extension of its operational resource.

4 dwg

FIELD: machine building.

SUBSTANCE: procedure for sealing electromagnetic valve of high pressure consists in its sealing in closed position by interaction between metal circular edge of seat and shut-off element under high pressure of working substance actuating spring and in valve opening by said spring squeezing and shut-off element opening with force of electro-magnet when is fed with electric current. The shut-off element has conic working surface. The seat with the edge is made on flat surface whereon there is placed a packing in form of an elastic film ring, An external end of the said ring is rigidly attached to said flat surface. An internal end of the ring has a lug over the edge of the seat; it is pressed inside with offset of the internal end of the ring into a side of its periphery increasing pressure tightness. There is disclosed the device for implementation of the said procedure.

EFFECT: raised reliability of operation of electro-magnetic valve and its increased resource by increased degree of its closure tightness.

3 cl, 2 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment. A valve system for fluid flow control inside a surgical cartridge contains a body with a fluid inlet passage and a fluid outlet passage where two passages are coupled by a through hole; and an elastomeric valve boss arranged concentrically relatively to the through hole. Under static conditions, an edge of a lower side of the valve boss forms a seal face of the valve which contacts with an edge of the through hole owing to extension of the valve boss with respect to the through hole. And the edge of the through hole forms a valve seat.

EFFECT: application of the given invention shall allow controlling a fluid flow inside the cartridge with providing higher functionality, reliability, cleanness and operating safety of the valve system.

8 cl, 5 dwg

FIELD: construction.

SUBSTANCE: method to seal a high-pressure electromagnet valve includes its sealing in closed position by means of interaction of the seat circular edge with the conical surface of the stop valve under spring action at it and its opening by release of the specified spring under action of the electromagnet anchor and the seat opening with a stop valve. Additional sealing of the electromagnetic valve is carried out by interaction of two elastically resilient sealing circular ledges, which are serially arranged in front of the seat circular edge, with conical surface of the stop valve under action of high pressure of working fluid at the opposite side relative to the specified conical surface. There is an electromagnet valve design with above described sealing method.

EFFECT: improved reliability and resource of the electromagnetic valve operation.

3 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: valve seat is suggested for use with valves for fluids. Valve seat (302) contains ring (302) of valve seat, sealing assembly (422) and lock (424). Valve seat ring (302) has external surface (402) containing the first round groove (414) and second round groove (416) located near the first round groove (414) to form the step profile (418). Sealing assembly (422) is located in the first round groove (414), and lock (424) is located in the second round groove (416) and holds the sealing assembly (422). The valve seat interacts with socket (314) and valve body (304). If the valve stock (318) moves by the drive, the lock element (316) can open or close the hole (322) in the socket (314) to ensure possibility of flowing of flow termination between the input hole (308) and output hole (310).

EFFECT: improved design.

21 cl, 9 dwg

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