The oil accumulator centrifugal compressor

 

The battery is designed to store oil system seals and the oil supply device of centrifugal compressors. The battery includes a housing, a cover and mounted parallel to the valve to release gas, while one of the valves for gas release is made or installed in its own housing at the outside of the battery casing and spring-loaded in the closing direction of the float valve, or in the form of spring-loaded in the direction of opening the spool valve. The technical result is increased reliability. 3 Il.

The present invention relates to the field of production of compressors, in particular to battery oil system seals and the oil supply device of centrifugal compressors.

Famous oil accumulator, which has a float valve to release gas (air) that is installed in the mounting socket in the top of the battery (see, for example, the prospectus of the company "Nuovo Pignone", S. 1,7).

Known battery oil system, seal gas compressor containing ball and ball valves, as well as spring-loaded ball valve blocking the flow of gas in the battery after his discharge from oil (see, for example, and.with. 14565629).

avawam valves in the upper part of the housing of the battery to release gas (air) from it (see, for example the book. K. A. Telnov and other automation gas pumping units with gas turbine drive. Leningrad: Nedra, 1983, S. 80-85 89-90 and prototype.

The task of the invention is to increase reliability and simplify the design of batteries, oil centrifugal compressors.

The essential features of the invention are body, cover and set parallel to the valve to release gas, while one of the valves for gas release is made or installed in its own housing at the outside of the battery casing and spring-loaded in the closing direction of the float valve, or in the form of spring-loaded in the direction of opening the spool valve.

The hallmark of the invention is that one of the valves for gas release is made or installed in its own housing at the outside of the battery casing and spring-loaded in the closing direction of the float valve, or in the form of spring-loaded in the direction of opening the spool valve.

In Fig.1 is a schematic representation of the oil accumulator valve to release gas, the section, Fig.2 and 3 callout options battery with float and Bolotnikova valves, respectively.

two) above the cavity 3 made 4 hole, which strengthened the float valve 5. Between the housing 1 of the battery and the housing 6 of the float valve 5 is equipped with a sealing ring 7. In the internal cavity 8 of the housing 6 is placed a float 9 to the axle 10, the lower part of which is made drilling 11 and 12, and in the upper part of the shaft 10 is made of a shut-off valve 13. In the lower part of the housing 6 mounted sleeve 14. The upper part of the housing 6 is closed by a cover 15 and a sleeve 16, which made drilling 17 and hole 18. The float 9 axis 10 supported on a spring 19 mounted in the housing 6. In the upper part of the housing 1 of the oil accumulator is also the ball valve 20. The output flange or fitting 21) float valve 5 and an outlet fitting 22 ball valve 20 is connected by a hose 23 and 24 of the exhaust gas from the battery with hydroline reset gassy oil from compressor seal in the float chamber or in the gas-separator (candle).

In a variant of the battery with Bolotnikova valve (see Fig.1 and 3) in the upper part of the housing 1 in 4 hole fortified spool valve 5. Inside the housing 25 of the spool valve 5 has a valve 26 with the locking edges 27 and screwed the lid 28 with an opening 29. Between the lower cylindrical portion of the shell 25 and the housing 1 is formed of a ring is pus 25 holes 34. Between the belts 31 and 32 of the valve 26 and the housing 25 is made annular gap 35. In the upper part of the cavity 36 within the housing 25 are made saddle edges 37 and opening 38. In the cavity 36 between the housing 25 and the valve 26 is installed spring 39.

Does the oil accumulator in the following way (see Fig.1 and 2).

Before starting the compressor includes an oil pump, and is filled with oil, the oil system of the compressor. When filling oil battery from it displaces air (gas) in hydroline reset gassy oil from compressor seal in the float chamber or the knock-out box (depending on the adopted scheme compressor seal) through the above points battery ball 20 and the float 5 valves which, when passing through air (gas) are open. When the oil fills the entire cavity 3 of the battery, it will be received in the internal cavity of the ball valve 20 and passing through the ball valve, picks up the ball and presses it against the seat, closing the passage of oil through it.

To improve the reliability of the release of the air (gas) when filling the battery butter in parallel with the ball valve 20 install the float valve 5, as the ball valve is not and what about when the battery is not yet fully filled with oil). If you only use the float valve, there is no way to provide the necessary flow section of the valve due to insufficient lifting force of the float, a limited amount of float. A relatively large flow cross-section of the hole to remove the gas (air) from the battery, you need to ensure not too slow filling of the accumulator with oil and to supply gas "extrudes" oil from the accumulator system lubrication and sealing in case of emergency. The float valve of the proposed design allows the battery to reliably completed in full and to carry out the audit and adjustment of the valve without removing the battery cover.

Consider a battery with a float valve in the embodiment depicted in Fig.2. When filling out the battery, oil, air (gas) from the cavity 3 of the battery is pushed out through the drilling 11 and 12 in the cavity 8 of the float valve 5. Further, the gap between the float 9 and the inner side surfaces of the body 6, through holes 17 in the sleeve 16 and the opening 18 of the air (gas) is released in hydroline 23 and hydroline reset gassy oil (and later in the float chamber or the knock-out box). In the absence of the cavity 8 makoplasty (for example, Plexiglas), so you need a spring 19, which is made in such a way that balances the weight of the float, providing thus the possibility of its ascent when filling the cavity 8 oil. When reaching a certain oil level in cavity 8 float 9 will emerge and with the further rise in the oil level shut off valve 13 and the outlet 18. The necessary contact pressure is provided a lifting force of the float and the pressure drop that occurs between the pressure in the cavity 8 and hydroline 23 after closing the openings 18 of the valve 13 and closing of the ball valve 20). In case of an emergency stop of pumps seals (pressure oil), first open the ball valve, and after the fall of the oil level in the accumulator is opened and the float valve.

In a variant of the battery with Bolotnikova valve (see Fig.3) air (gas) from the cavity 3 of the battery when filling it with oil is displaced through the gap 30, the hole 34, the gap 35, the hole 38 and hydroline reset gassy oil. After filling the battery (cavity 3) oil next, it flows through the gap 30, the hole 34 in the cavity 33 and then passes through the gap 35. Due to the fact that the density of liquid n the areas of the spool 26 moves upwards and the locking edge 27 will sit on the saddle edges 37 - the valve will close and will be maintained in the closed position, the full differential pressure in the cavities 3 and 36.

In case of an emergency stop of pumps seals (pressure oil) first open the ball valve, and after the fall of the oil level appears spool valve.

Claims

The oil accumulator centrifugal compressor, comprising a housing, a cover and mounted parallel to the valve to release gas, characterized in that one of the valves for gas release is made or installed in its own housing at the outside of the battery casing and spring-loaded in the closing direction of the float valve, or in the form of spring-loaded in the direction of opening the spool valve.

 

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FIELD: mechanical engineering; machine building hydraulics.

SUBSTANCE: invention can be used on vehicles and machine-and-tractor units operating under unsteady conditions of movement. Proposed device contains planetary train 1, reactive link 3 connected with drive gear of oil pump 5. Planetary train is connected through carrier shaft with gearbox 9 and is set into operation by engine 11. Two-step adjustable restrictor 12 is installed in pressure main line of pump. Safety valve 14 and control cock 15 are connected to input of adjustable restrictor, being also installed in pressure main line of pump pneumohydraulic accumulator, being end member of pressure main line, is provided with three spaces. It consists of hydraulic cylinder, free piston, piston with rod, piston position regulator, oil line and oil channel. Space between pistons is filled with oil which regulates volume.

EFFECT: reduced influence of vibrations of external traction load onto functioning of machine-and-tractor unit.

2 dwg

FIELD: fluid-pressure actuators.

SUBSTANCE: fluid-pressure diaphragm accumulator comprises tank separated into gas and liquid spaces by the diaphragm. The top wall of the tank is provided with the unit for control of compressed air. The housing of the unit has the vertical cylindrical passage that enters the gas space of the tank and two cylindrical passages arranged perpendicular to it and receives identical valves spring-loaded to the connecting pipe faces by springs. The connecting pipes are mounted in the housing in front of the valves and overlap the nozzle opening for the inflowing compressed air into the space of the tank. The other connecting pipe receives the reducing valve and nozzle opening for discharging the compressed gas to the atmosphere. The vertical passage and longitudinal through grooves in the valve receive master cam which is connected with the diaphragm and cooperates with the stops of its valves by means of cam when the diaphragm moves outside of the specified working zone.

EFFECT: enhanced reliability.

11 dwg

FIELD: hydraulics.

SUBSTANCE: fluid-pressure accumulator comprises cylindrical housing provided with gas and liquid spaces separated by the fluid separator of buoy type and shutoff valve provided with the gate and seat made of truncated cone and arranged on the bottom of the fluid separator and connecting pipe for supplying fluid, respectively. The bottom of the fluid separator is made of the gate having inner conical surface. The seat has outer mating surface.

EFFECT: enhanced reliability and increased longevity.

3 dwg

FIELD: fluid-pressure actuators.

SUBSTANCE: supply unit comprises hydraulic accumulator, housing, and slide of the reduction valve which is mounted in the housing to define pressure, drain, and reduced pressure spaces. The slide is mounted for permitting disconnection of the pressure space from the reduction space. The hydraulic accumulator is connected with the housing from the side of the space of the reduction pressure. The safety valve is interposed between the space of the reduced pressure and the drain space. The trough opening that connects the space of the reduced pressure with the space of the safety valve is made along the axis of the slide. The safety valve is mounted in the drain space for permitting it to be pressed to the face surface of the slide by means of its spring. Between the pressure space and pressure line is the check valve that prevents the fluid to flow into the pressure line. The slide is made of the direct-action valve provided with the shank that is inserted in the drain space. The part of the slide that is opposite to the shank is diverging from the shank body and bears on the seat defined by the projections on the housing. The area of the inner section defined by the line of contact between the seat and slide of the reduction valve is greater that that of the inner section defined by the line of contact between the face part of the slide shank and safety valve.

EFFECT: enhanced reliability.

8 cl, 2 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used in transmissions of tractors and road-building machines under unstable motion conditions. Proposed transmission of vehicle has planetary reduction gear coupled with engine, pneumohydraulic accumulator, hydraulic pump mechanically coupled with one of links of planetary reduction gear. Fitted in pressure main lone are hydraulic distributor and additional three-dimensional member containing adjustable restrictor connected with variable rigidity pneumohydraulic accumulator. Drain main line of pneumohydraulic accumulator is connected through reduction valve with suction main line of hydraulic pump and drain main line of hydraulic distributor.

EFFECT: protection of engine and parts of power train from peak loads by means of reducing valve and from dynamic loads at starting from half, optimization of operation of engine, reduced specific consumption on fuel.

1 dwg

FIELD: installations for supplying fluid under pressure.

SUBSTANCE: method comprises determining the value of pressure in the vessel preliminary filled with explosion-proof compressible fluid and connected with the distributing device, comparing the value with that required for operation of the motor, and switching valving by the command signal to the air-operated motor of the drive. When the value of pressure in the vessel is higher or equal to the permissible value, the explosion-proof fluid is supplied from the vessel to the air-operated motor, whereas the pumped fluid is not supplied from the pipeline. When the value of pressure is lower than the permissible value, the pumped fluid is supplied from the pipeline to the air-operated motor, and the fluid is not allowed to enter the vessel.

EFFECT: improved environmental protection.

9 cl, 6 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used on vehicles operating under unstable conditions of movement. According to invention, nonlinear hydraulic damping unit is installed in transmission of vehicle. Said unit contains adjustable restrictor and least two pneumohydraulic accumulators of different rigidly. One input of restrictor is connected with main pneumohydraulic accumulator, and second input, with inputs of each additional pneumohydraulic accumulators.

EFFECT: improved reliability and increased durability of parts of power train owing to stepless change of torque transmitted from engine to wheels or tracks.

1 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to hydraulic systems and it can be used in different vehicles and machine-and-tractor sets operating under unsteady conditions. Proposed device contains planetary train 1 consisting of crown gear 2 and reaction member 3. Reaction member 3 is connected with gear 4 of drive of oil pump 5 and gear 6 of drive of hydraulic motor 7. Gear 4 of drive of oil pump 5 is connected with pump through overrunning clutch 8. Gear of drive of hydraulic motor 7 is connected with hydraulic motor 7 through overrunning clutch 9. Oil pump 5 is connected to suction main line 10 and pressure main line 11. Hydraulic motor 7 is connected to pressure main line 12 and return main line 13. Planetary train 1 is connected with gearbox 15 by shaft of carrier 14 and is set into motion by clutch 16 of engine 17. Adjustable throttle 18 is installed in pressure main line 11. Safety valve 19, control cock 20 and control hydraulic main line 21 with hydraulic distributor 22 are connected to pressure main line 11 before adjustable throttle 18. Device contains also hydraulic tank 26 and pneumohydraulic accumulator 27 consisting of three spaces.

EFFECT: increased efficiency of device.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: accumulator is designed to accumulate power in hydraulic drives with alternating consumption of liquid power. The accumulator comprises case made as a cylinder sleeve with a dead spherical bottom which has a stop support end surface and a central inlet for gas supply, removable cover with an axial hole for supplying working liquid and an end support, dividing piston installed inside the case-sleeve and capable of reciprocal motion thus creating liquid and gas chambers; at that the piston includes two packing portions, mutually spaced in the axial direction of the piston and moving along the inside wall of pneumatic hydraulic accumulator, at that a threaded portion is formed on the outside surface of the case-sleeve from the open part side, this threaded portion has a directing surface and a packing device, while the medium part has heat exchanging elements in kind of a developed peripheral surface with a formation of a row of ring ribs mutually and evenly spaced on the said surface in the axial direction; the said ribs have trapezoid section and made integrally with a case-sleeve.

EFFECT: increase of operational reliability, safety, manufacturability and maintainability.

5 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: device is designed to accumulate power in variable liquid power consumption hydraulic drives, to damp pressure pulsations and to kill hydraulic shocks in supply hydraulic systems. The accumulator incorporates a cylindrical barrel casing, its one end being closed by a spherical bottom with a limiting thrust end face surface, a casing neck making a central gas inlet, a detachable cover furnished with an axial channel to feed working fluid and a thrust end face, a separating piston arranged inside the barrel so as to reciprocate and to form a fluid and gas chambers. Here note that the piston includes two sealing sections spaced axially apart and moving along the accumulator inner wall. Note also that the accumulator represents an integral compact unit, a module, that can be built easily and directly into the system hydraulic drive, the said module incorporating a valve unit with shutting off elements of the "valve-seat" type and detachable coupler.

EFFECT: higher reliability and safety, ease of manufacture and repair.

6 cl, 6 dwg

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