RU25204U1 - CENTRIFUGAL REGULATOR OF SPEED OF A DIESEL DIESEL GENERATOR - Google Patents

Abstract

1. A centrifugal speed controller of a diesel diesel generator, comprising a centrifugal speed meter, a device for setting the speed, an actuator of the isodromic power feedback buffer type associated with the racks of fuel pumps, a spool distribution device with spools and movable bushings, each the movable bushings of the spool switchgear kinematically connected to the actuating actuator of the power isodromic feedback and buffer type, and spools with a centrifugal speed meter, characterized in that the centrifugal speed meter is equipped with a spring-hydraulic damping device made in the form of a cylindrical crosshead with annular protrusions having side springs included in the grooves of the gear transmitting the torque of the cylindrical traverse through a torsion spring mounted on the spool sleeve of the spool distribution device and kinematically connected to the drive roller with springs, comb the gap between the pinion and the collar allows the cylindrical yoke rotatable through a certain angle in both directions relative to the gears, based on podshipnik.2. The centrifugal speed controller of a diesel diesel generator according to claim 1, characterized in that the controller does not have hard feedback nodes between the power servomotor and the control servomotor of the device for setting the speed, power control units and oil supply channels to them.

Description

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CENTRIFUGAL FREQUENCY REGULATOR OF THE ROTATION OF THE FUEL DIESEL GENERATOR

The utility model relates to internal combustion engines, namely to automatic centrifugal speed controllers of diesel diesel generators.

A known speed controller of a diesel generator (see, Tenovoz TEZ, NP Sinenko, EG Zaslavsky, Moscow, Transport, 1986, p. 44-46), containing the main elements: a speed meter, perceiving deviation diesel shaft rotation frequency from the set value; the executive body associated with the rails of the fuel pumps, the node isodromic kinematic feedback, ensuring the stability of the regulatory process; oil pump, creating a pressure of the working fluid; oil battery.

The regulator mechanisms are driven in rotation from the diesel crankshaft through a special drive.

The design of the controller contains a spring connection on the input shaft, which serves to damp harmful vibrations.

The centrifugal speed controller of the diesel generator is equipped with an electro-pneumatic mechanism associated with a lever transmission, which is controlled by the driver using the controller.

The disadvantage of this controller is the complexity of the design, tuning and adjustment of the centrifugal controller and the instability of operation at low speeds.

The closest in technical essence to the claimed utility model is a centrifugal speed controller 1 OD 100 mounted on a diesel diesel locomotive TEZ (see diesel locomotive TEZ, NP Sinenko,

E.G. Zaslavsky, Moscow, Transport, 1986, p. 48, Fig. 26).

The design of such a controller contains a rigid drive shaft, a lever load control system connecting the upper rod of the power servomotor with the piston of the servo motor for setting the frequency of rotation; the spool device to this system with needle valves, an inductive sensor with a servomotor, an MP5 electromagnet with a shut-off device.

The main structural elements of the centrifugal controller are a speed meter, an executive body connected to the racks of fuel pumps. This regulator employs buffered type isodromic feedback.

The centrifugal speed controller of the diesel generator is equipped with an electro-hydraulic speed control system that provides a stepwise change in the speed of the diesel shaft during a smooth transition from step to step.

The disadvantages of this centrifugal regulator are the design complexity, insufficient smoothing of torsional vibrations coming from the crankshaft.

Indirectly, this drawback affects the deterioration of the environmental and fuel-economic characteristics of the diesel generator and the efficiency of the diesel engine.

The objective of the utility model is to improve the quality of regulation by damping torsional: vibrations, improving the dynamic and environmental characteristics of the centrifugal rotational speed controller and its operating conditions, while simplifying the kinematic scheme and design of the traditional centrifugal speed controller of a diesel diesel generator.

K) P1 your access to other nodes of the regulator.

The technical result is achieved by the fact that the centrifugal speed controller of the diesel diesel generator is equipped with a spring-hydraulic damping device made in the form of a cylindrical traverse with ring protrusions having side springs included in the grooves of the gear, transmitting torque to the cylindrical traverse through a torsion spring mounted on the spool sleeve distribution spool device, and kinematically connected to the drive roller with springs, and the gap between the gear and ring protrusions allows the cylindrical traverse to rotate at a certain angle in both directions relative to the gear, resting on a bearing.

In addition, in the centrifugal controller there are no hard feedback nodes between the power servomotor and the device control servomotor for setting the rotational speed, power control units and oil supply channels to them.

In FIG. 1 shows a kinematic diagram of a centrifugal speed controller.

Figure 2 is a longitudinal section of a centrifugal regulator.

In Fig.Z - section Ap AI spring-hydraulic damper.

Figure 4 is a partial cross-sectional view of ErB.

The centrifugal speed controller of the diesel diesel generator contains a flexible drive roller 1 with springs 2, an oil pump 3 in communication with the battery 4, ensuring constant oil pressure. The spool distribution device includes movable spool sleeves 5, 7 and spools 6, 8.

The centrifugal speed meter of a diesel diesel generator consists of two cargo 10 rotating with a cylindrical traverse 9, made in the form of angular levers and an all-mode

a spring 11 having a certain tightening.

Spools 6, 8 of the spool distribution device are in kinematic connection with a centrifugal speed meter.

The centrifugal speed meter of the diesel diesel generator is equipped with a spring-hydraulic damping device made in the form of a cylindrical crosshead 9 with annular protrusions that enter the internal cavities of the gear 12 with a gap G (Fig. 3). From the gear 12 to the cylindrical traverse 9, the torque is transmitted through the torsion spring 15. The ends of this spring are bent in different directions: one end enters the hole of the traverse 9, the second into the hole of the gear 12. Working on twisting, the spring 15 provides a smooth transmission of rotation to the meter rotational speeds. The same role is played by the side springs 14, bending to the protrusions when turning the yoke 9. The gap G between the gear 12 and the annular protrusions of the cylindrical yoke 9 allows the cylindrical yoke to rotate at a certain angle in both directions relative to the gear 12, relying on the bearing 13.

Hydraulic shock absorption is carried out using oil filling the cavities of the gear 12 and the annular protrusions of the yoke 9. When the yoke is turned, the oil flowing between the annular protrusions creates friction, which contributes to the damping of vibrations.

The spring-hydraulic damping device provides double damping of torsional vibrations coming from the diesel crankshaft to the regulator, which leads to an improvement in static, dynamic and environmental characteristics.

The buffer type isodromic power feedback includes a piston 16 with springs in cavities A and B of the isodrome needle 17 and power girdle D of the spool 6. The isodrome needle 17 controls the passage area

the hole connecting the cavity A and B to the left and right of the piston 19. Feedback provides stability to the control process by acting on the spool 6 through the belt D.

The executive servomotor 18 of the isodromic power feedback of the buffer type of a centrifugal diesel engine generator speed controller connected to the fuel pump rails consists of a piston 20 with a rod 19 moving in the housing of the servomotor 18 and a spring 21 and is kinematically connected to the movable spool distribution sleeves devices.

The buffer-type actuating actuator 18 of the isodromic power feedback provides the force necessary to move the racks of the fuel pumps and, under the influence of a centrifugal speed meter, changes the fuel supply to the engine cylinders.

A device for setting the crankshaft rotation frequency includes electromagnets MP1, MP2, MRZ, MP4, spool 8 and spool sleeve 7, control servomotor 22 and hard feedback consisting of rod 25 and levers 24, 27.

The electromagnets MP1, MP2, MP3, included by the controller in a certain sequence, act on the vertices of the triangular plate 26.

To automatically stop the diesel generator in the event of a drop in oil pressure in the diesel oil system below the permissible value, as well as in the case of the need to remotely stop the diesel, there is a moan device consisting of a housing 28, a traction electromagnet 29, a spool 30.

Centrifugal regulator operates as follows.

The mechanisms of the centrifugal frequency controller are driven in rotation from the diesel crankshaft through the drive, from where it is transmitted to the drive shaft 1. Oil from the oil pump 3 under pressure flows through

channels to spool bushings 5 and 7.

When operating in steady state (see figL) or constant load, the spool 7 with the E belt closes the window in the spool sleeve 5, blocking the oil from the accumulator to the piston 16. The piston 16 is in the middle position under the action of its springs. The oil pressure under the piston 20 of the servomotor 18 and in the cavities A and B is the same (figure 1). The rod 19 of the servomotor 18 is in a position in which the fuel supply corresponds to the load of the diesel engine. When the load on the diesel engine increases, the speed of its shaft decreases, the loads converge, the spool 6 moves downward, allowing access of oil from the battery 4 to the cavity B. The piston 16 is shifted towards the servomotor 18 and displaces the corresponding volume of oil under the piston 20 of the servomotor 18, moving it up and increasing fuel supply. The same will happen when moving the controller handle to higher positions.

When the pistons 16 and 20 move, the differential pressure of the oil on both sides of the piston 16 is transmitted to the cavity above the girdle D of the spool 6 and below it with a higher pressure under the girdle D. The pressure on the girdle D from the bottom increases until it overcomes the force the meter spring 11 and will not lift the spool 6 to the overlapping control window of the spool sleeve 5, while the control window closes, the piston 20 stops in a position corresponding to the increased fuel supply necessary for the diesel to work under increased load and whether the corresponding highest position of the controller.

When the load decreases, the diesel shaft rotational speed increases, the loads 10 diverge, lifting the control valve 6 up and opening the control window with the E belt. The control window connects the cavity B to the drain, allowing the piston 20 of the servomotor 18 to spring down under the action of the spring 21 in the direction of decreasing fuel supply . The same thing happens when

transferring the controller from higher positions to lower ones.

When the pistons 16 and 20 move, the differential pressure of the oil on both sides of the piston 16 is transmitted in the cavity above the girdle D of the spool 6 and under it with a higher pressure above the girdle D. The pressure on the compensation girdle D from above increases until it balances the force of the loads and the spool 6 will not lower until the window in the spool sleeve 5 is blocked, after which the piston 20 is set to the corresponding position; it has a reduced fuel supply necessary for the diesel engine to work under reduced load. The piston 16 returns 1; it is in the middle position under the action of its springs. The diesel engine is stopped; it is carried out using a stop device. When the electromagnet 29 is turned off, the spool 30 rises under the influence of oil pressure, opening a channel for draining oil from under the piston 20 into the regulator cavity. The piston 20 under the action of the spring 21 falls down and through the lever system turns off the fuel supply to the diesel engine. The diesel engine stops.

Claims (2)

1. A centrifugal speed controller of a diesel diesel generator, comprising a centrifugal speed meter, a device for setting the speed, an actuator of the isodromic power feedback buffer type associated with the racks of fuel pumps, a spool distribution device with spools and movable bushings, each the movable bushings of the spool switchgear kinematically connected to the actuating actuator of the power isodromic feedback and buffer type, and spools with a centrifugal speed meter, characterized in that the centrifugal speed meter is equipped with a spring-hydraulic damping device made in the form of a cylindrical crosshead with annular protrusions having side springs included in the grooves of the gear transmitting the torque of the cylindrical traverse through a torsion spring mounted on the spool sleeve of the spool distribution device and kinematically connected to the drive roller with springs, comb the gap between the pinion and the collar allows the cylindrical yoke rotatable through a certain angle in both directions relative to the gears, based on the bearing. 2. The centrifugal speed controller of the diesel diesel generator according to claim 1, characterized in that the controller does not have hard feedback nodes between the power servomotor and the control servomotor of the device for setting the speed, power control units and oil supply channels to them.