Valve

FIELD: valving.

SUBSTANCE: valve comprises housing with inlet port, outlet port, seat, and movable valving member or control member. The member is connected with the pulse drive through the flexible impermeable member. The valve is provided with additional pulse drive mounted inside the housing, two devices for converting and reducing the pulse reciprocation into interrupted forward motion or rotation, or curved motion. The converting devices are connected with the valving member, control member, and pulse drives through flexible impermeable members.

EFFECT: enhanced reliability and prolonged service life.

2 dwg

 

The invention relates to the field of valve industry, in particular to devices of valves steam, water, other gases and liquids.

Known electric valve, comprising a housing with an inlet, an outlet and a seat connected with the rod shut-off body in the form of a spool, the drive Converter rotational motion of the mover ( electric motor) in a reciprocating movement of the rod, which is connected to the housing through a sealing device is placed in the cover, the stirrup (see Gurevich J.F. Calculation and design of pipeline valves. - M.: Mashinostroenie, 1964, s.112, Fig).

The disadvantage of this device is the connection of the rod to the housing through a sealing lip device, which reduces the reliability and durability of the valve due to friction, wear, rod, seal and quick release of the latest failure, resulting in leaks medium, large dimensions of the spindle and drive.

Known valve, comprising a housing with an inlet, an outlet and a seat connected with the rod shut-off body in the form of a spool, the drive Converter (coil pair) rotational motion of the propeller ( in the form of a spindle with a handle) in the reciprocating movement of the rod placed under the cover inside the housing, which is connected with the cover by means of the bellows (elastic cont nicely for the working environment element) (see Gurevich J.F. Calculation and design of pipeline valves. - M.: Mashinostroenie, 1964, s.112, Fig).

Due to the presence of the bellows, within its period of operation, are excluded from leaking between the spindle and the cover.

The disadvantage of this device is the small stroke of the bellows, to increase the progress you want most of their length, which leads to high cost, limiting the use of bellows valves for valves with great Control and a large stroke (very difficult and expensive to manufacture bellows large diameter and length at high pressures and temperatures).

Reliability and durability of the bellows large length and diameter lower than the small-size bellows. The dimensions of the drive spindle and the entire product significant for valves with large Remote control.

Known diaphragm valve, comprising a housing with an inlet, an outlet and a seat connected with the rod shut-off body in the form of a slide valve, solenoid (pulsed) drive the reciprocating motion of the mover (in the form of a spindle, which is connected through the membrane (elastic impermeable to the working environment element) with the rod (see Gurevich J.F. and other Valves in nuclear power plants. - M.:Energoizdat, 1982, p.113, Fig). The membrane is similar to the bellows and ensures absolute tightness of the housing from the mover.

The disadvantage of this device is the small Ho is the working body - spool due to the limited stroke of the membrane to increase, which requires an increase in the diameter of the membrane, which leads to an increase of the dimensions of the product, which limits the use for large DN and PN (nominal diameters and pressures).

Objectives of the invention are: to improve the reliability and durability of the valve with a large DN, PN, a size reduction of the drive spindle and valve in General, the reduction of diameter and length of the bellows, precision speed control and positioning stop or regulatory authority, and control its position.

The technical result is achieved in that the valve, comprising a housing with an inlet, outlet and seat, a movable stop or regulatory authority associated with pulse drive through the impermeable elastic element, equipped with an additional pulse drive, the two devices conversion and reduction of the pulse reciprocating motion into intermittent, translational or rotational or curvilinear motion, which is located inside the housing and connected with shut-off or regulating body with a pulse drives through the impermeable elastic elements, and devices for the conversion and reduction of motion are opposite the direction of motion of the output elements.

The essence and the gain is that used pulsed drive inverter movement with the transformation of the movement located inside the enclosure.

A brief description of the drawings.

Figure 1 presents schematically the front section of the valve, figure 2 - example of implementation of the NAT device and reduction of motion.

The valve includes a housing 1 with an inlet 2, outlet 3 holes and saddle 4, a movable stop or regulatory authority (rwdp) 5. Device conversion and reduction of motion (OPRD) 6, 7 is located inside the housing 1, for example, under the cover 8, are associated with impulse actuator movement (SDI) 9, 10 (for example, reciprocating motion) and the nuclear waste disposal 5. It can be solenoids, pneumatic, hydraulic (pneumatic, hydraulic), pestujhely or engines on the basis of the electrohydraulic effect, reactive, explosive engines, which provide pulse movement (e.g., rectilinear reciprocating) with a certain amplitude, force, frequency, duty cycle. The control unit (cu) 11 SDI 9, 10 is located outside the housing 1. SDI 9, 10 are made of the output elements 12, 13. UPG 6, 7 are walking, with the possibility of conversion and reduction (increase torque at the output of pulse movement into intermittent rotational, translational, or curvilinear motion in R is slichnih planes. UPG 6, 7 are made with input elements 14, 15 and with opposite directions of movement of the output elements 16, 17 associated with the nuclear waste disposal 5.

Rwdp 5 can be performed in different ways: disc, cone, moving coaxially with and along the axis of the seat 4, in the form of a disk with slits, which rotates relative to the slots in the saddle (saddle motionless), in the form of a ball with a hole (ball valve), the valve spool (flaps) reverse controlled valve. The movement of the spool can be discerned: straight, rotating in different planes, along a curved path.

SDI 9, 10 are located outside of the housing 1 and connected with the converters movement through impermeable elastic elements 18, 19 (UNE), for example, in the form of bellows or membrane, tightly attached to the cover 8 or the housing 1 (Fig 1). UNE 18, 19 can be located inside of the housing 1 and the inner part is connected with the external environment.

The operation of the valve.

The working environment is supplied to the inlet 2 of the housing 1, passes through the gap between the rwdp 5 and the seat 4 to the outlet 3. Depending on the provisions of the nuclear waste disposal 5 is opened, closed, flow control environment. Moving rwdp 5 is as follows: BU 11 serves pulses to SDI 9, while the output link 12 is moving, for example, translational, and through ONE 18 transmits movement to the s to the input element 14 UPG 6. Further movement is converted (transformed) in the direction, for example in rotary, using, for example, a ratcheting mechanism UPG 6 (figure 2), thus rotating the shaft on which is fixed a toothed wheel that rotates at a certain angle, simultaneously and reduction through the application of mechanical transmission, for example, a rack and pinion, and the rack - output element 16 UPG 6 is moved on a step. One of the gears 20 is connected with the fixation element, for example, in the form of a spring-loaded ball 21, which provides locking in the end position of the output element 16. Accordingly moves and sdrw 5 at a certain step, which is rigidly connected with the output element 16. When submitting the next control pulse from BU 11 to 9 SDI process is repeated and sdrw 5 is moved one step. As mentioned above, this can be a straightforward step-by-step, rotary, curvilinear movement rwdp 5, depending on fixture type and nature of movement relative to the seat 4. For backward movement of radioactive waste from 5 BU 11 serves pulses to SDI 10, with the output link 13 performs motion (e.g., translational) and through ONE 19 transmits motion to the input element 15 OPRD 7. Further movement is converted (transformed), for example, in the rotation, but upravleniyafederaljnogo above. Output element 17 OPRD 7 moves to a step locking in the end position. Accordingly moves and sdrw 5 at a certain step, but in the opposite direction. When submitting the next control pulse from BU 11 to 9 SDI process is repeated and sdrw 5 is moved one step. This excludes seals, rod seals, spindle, which increases the reliability of the valve. Significantly reduced the dimensions of the actuator and valve.

This design significantly improves the accuracy of speed control and positioning rwdp 5, since the speed is determined by the pulse frequency of the motion SDI 9, 10, which is easy to modify electronically when submitting from BU 11 control pulses, and the ratio of reduction UPG 6, 7, which is defined by the design UPG 6, 7, and the position of the nuclear waste disposal 5 is determined by the number of pulses of the movement SDI 9, 10. There is no need for additional control devices provisions rwdp 5, which are regulated by the rules of designing valves for fossil and nuclear power plants, thus it is easy to determine the position of the nuclear waste disposal 5 electronically, by counting the control pulses from BU 11 to SDI 9, 10. The essential difference of this design is the low inertia and low backlash power transmission OPRD.

This valve design can be used in di is the same, ball, needle, latkovich, Bolotnikova, axisymmetric (firm Mokveld) valves and shut-off functions in regulating, reverse and other valves. The basic principle inherent in the design of the valve - conversion pulse, for example a reciprocating input motion from impulse thruster rectilinear, curvilinear, the rotational output movement of radioactive waste, which can significantly reduce the size of the valve, actuator, spindle, bellows or diaphragms, simplify management, positioning and position control of radioactive waste. For valves with large DN substantially reduced dimensions, it is possible to use small-size pulsed actuators, bellows and diaphragms, which significantly improves the reliability and durability of their work. Using this arrangement, the valves of the rotary type for the disk and ball valve allows the use of conventional bellows and diaphragms, which has never been used in such structures, and to significantly improve the reliability and durability of the valve, since there is no bellows and diaphragms that operate at a rotational motion.

This solution can be used to drive the valves of all types in various industries.

Valve, comprising a housing with an inlet, outlet and behold the scrap, movable locking or regulatory authority associated with pulse drive through the impermeable elastic element, wherein the valve is provided with an additional pulse drive, the two devices conversion and reduction of the pulse reciprocating motion into intermittent translational, or rotational or curvilinear motion, which is located inside the housing and connected with shut-off or regulatory authority, as well as with pulse drives through the impermeable elastic elements, and devices for the conversion and reduction of motion are opposite the direction of motion of the output elements.



 

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