JP2012047146A - Oil circulation recovery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a residual oil recovery device which can suppress reduction of circulated lubricating oil and eliminating time for returning a residual lubricating oil sucked from the inner part of a rotary machine to the circulation passage of a lubricating oil.SOLUTION: In an oil circulation recovery device 10, the lubricating oil is supplied to the bearing of a rotor 5 while being circulated when the rotor 5 of the rotary machine 3 is rotated and the residual lubricating oil remaining in the rotary machine 3 can be recovered when supply of the lubricating oil to the bearing is stopped. The oil circulation recovery device includes an oil circulation device 19 supplying the lubricating oil to the bearing of the rotor 5 while circulating the lubricant oil when the rotor 5 of the rotary machine 3 is rotated and a sucking device 21 sucking the residual lubricating oil in the inner part of the rotary machine 3 when supply of the lubricating oil to the bearing 7 is stopped. The sucking device 21 is assembled in the circulation passage to constitute a part of the circulation passage in which the lubricating oil is circulated by the oil circulation device 19 and sends out the sucked residual lubricating oil on a downstream side in the circulation direction of the circulation passage.

Description

  According to the present invention, when rotating the rotating body of the rotating machine, the lubricant is supplied to the bearing of the rotating body while circulating the lubricating oil, and remains in the rotating machine when the supply of the lubricating oil to the bearing is stopped. The present invention relates to an oil circulation recovery device capable of recovering residual lubricating oil.

  The rotating machine has a rotating body that rotates. While rotating the rotating body, the unbalance of the rotating body is measured as follows. While rotating the rotating body, the vibration generated by the rotation is measured and the rotation angle of the rotating body is measured. Based on the measured vibration and rotation angle, unbalance data of the rotating body is obtained (for example, Patent Document 1 below). The unbalance data includes the circumferential position of the unbalance existing in the rotating body (the position related to the axis of the rotating body) and the size of the unbalance.

  During such imbalance measurement (that is, when the rotating body is rotated), the oil circulating device 50 supplies lubricating oil to the bearing that supports the rotating body.

FIG. 1 shows an oil circulation device 50 relevant to the present invention. The oil circulation device 50 includes a tank 51, a pump 52, an oil supply pipe 53, an oil return pipe 55, a heater 56, and the like.
Lubricating oil is accumulated in the tank 51. The pump 52 sends the lubricating oil in the tank 51 to the oil supply pipe 53. The oil supply pipe 53 supplies the lubricating oil from the tank 51 to the oil supply port 58 a of the rotary machine 58. The lubricating oil supplied to the oil supply port 58a is supplied to the bearing that supports the rotating body of the rotary machine 58 and flows to the oil discharge port 58b. The oil return pipe 55 returns the lubricating oil discharged from the oil discharge port 58 b of the rotary machine 58 to the tank 51. The heater 56 heats the lubricating oil in the tank 51. The pump 57 sends the lubricating oil in the oil return pipe 55 to the tank 51.

JP 2002-039904 A

  After the unbalance measurement, the rotary machine 58 is removed from the oil supply pipe 53 and the oil return pipe 55, and another rotary machine 58 is attached to the oil supply pipe 53 and the oil return pipe 55 to measure the unbalance of the other rotary machine. Same as above.

However, residual lubricating oil drips from the rotary machine 58 removed from the oil supply pipe 53 and the oil return pipe 55.
Therefore, a vacuum cleaner 61, valves 63 and 65, and a suction pipe 67 are attached to the oil circulation device 50. During the imbalance measurement in which the rotating body is rotating, the valve 63 is opened and the valve 65 is closed. When the unbalance measurement is completed, the rotation of the rotating body is stopped, the valve 65 is opened, the valve 63 is closed, and in this state, the cleaner 61 sucks the residual lubricating oil in the rotary machine 58 through the suction pipe 67. Extracted from the rotating machine 58. Thereafter, the rotary machine 58 is removed from the oil supply pipe 53 and the oil return pipe 55, and another rotary machine is attached to the oil supply pipe 53 and the oil return pipe 55.

Such suction has the following problems.
Every time the rotating machine 58 is removed from the oil circulation device 50, the cleaner 61 sucks the lubricating oil from the rotating machine 58, so that the lubricating oil in the circulation path (for example, the lubricating oil in the tank 51) quickly decreases. Therefore, it is necessary to replenish the tank 51 with new lubricating oil frequently.
Further, when the lubricating oil sucked by the cleaner 61 is moved to the circulation path (for example, the tank 51), the operation is troublesome.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an oil circulation recovery device that can suppress the reduction of circulating lubricating oil and eliminates the trouble of returning the residual lubricating oil sucked from the rotary machine to the lubricating oil circulation path.

In order to achieve the above-described object, according to the present invention, when rotating the rotating body of the rotating machine, the lubricating oil is supplied to the bearing of the rotating body while circulating the lubricating oil, and the supply of the lubricating oil to the bearing is stopped. An oil circulation recovery device capable of recovering residual lubricating oil remaining in a rotating machine at times,
An oil circulation device that supplies the bearings of the rotating body while circulating the lubricating oil when rotating the rotating body of the rotating machine;
A suction device that sucks residual lubricating oil in the rotating machine when supply of lubricating oil to the bearing is stopped,
The suction device is incorporated into the circulation path so as to constitute a part of the circulation path through which the lubricating oil circulates by the oil circulation device, and sends out the sucked residual lubricating oil to the downstream side in the circulation direction of the circulation path. An oil circulation recovery device is provided.

According to a preferred embodiment of the present invention, the rotating machine includes an oil supply port to which lubricating oil is supplied by an oil circulation device, and an oil discharge port that discharges the lubricating oil that is supplied to the oil supply port and passes through the bearing. Have
The suction device includes a gas supply port to which compressed gas is supplied, a suction port communicating with the oil discharge port, and a negative pressure generated by the compressed gas supplied from the gas supply port. A negative pressure generating chamber for sucking the residual lubricating oil from the suction port; and a delivery port for sending the residual lubricating oil sucked into the negative pressure generating chamber together with the compressed gas;
The oil circulation device includes, as components of the circulation path, a suction pipe extending from the oil discharge port to the suction port, and a recovery supply pipe extending from the delivery port to the oil supply port,
By flowing through the circulation path, the lubricating oil passes through the oil supply port, the bearing, the oil discharge port, the suction pipe, the suction port, the negative pressure generating chamber, the delivery port, and the recovery supply pipe in this order.

Preferably, in the middle of the recovery supply pipe, a tank for storing lubricating oil is provided,
The suction device sends the residual lubricating oil into the tank together with the compressed gas from the delivery port.

  According to the above-described present invention, the suction device for sucking the residual lubricating oil in the rotary machine is provided, and this suction device is provided in the circulation path so as to constitute a part of the circulation path through which the lubricating oil is circulated by the oil circulation device. Since the residual lubricating oil that has been incorporated and sucked is sent to the downstream side in the circulation direction of the circulation path, it is possible to suppress a decrease in the lubricating oil in the circulation path, and the residual lubricating oil sucked from inside the rotating machine is sent to the circulation path. There is no need to return it.

1 shows an oil circulation device related to the present invention. It is a block diagram of the oil circulation collection | recovery apparatus by embodiment of this invention. The structure of the suction device in FIG. 2 is shown.

  A preferred embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

  FIG. 2 is a configuration diagram of the oil circulation recovery device 10 according to the embodiment of the present invention. The oil circulation recovery device 10 supplies lubricating oil to the bearing 7 of the rotating body 5 while rotating the rotating body 5 of the rotating machine 3. Further, the oil circulation recovery device 10 recovers the residual lubricating oil remaining in the rotating machine 3 when the rotation of the rotating body 5 is stopped and the supply of the lubricating oil to the bearing 7 is stopped.

  The rotary machine 3 is a supercharger in the example of FIG. The supercharger 3 is a device that supplies compressed air to the engine by using exhaust gas energy of an engine mounted on a vehicle or a ship. The rotating body 5 of the supercharger 3 includes a turbine blade 13 that is rotationally driven by exhaust gas from the engine, a compressor blade 15 that supplies compressed air to the engine by rotating integrally with the turbine blade 13, and a turbine at one end. A blade 13 is coupled, and a rotary shaft 17 is coupled to the other end of the compressor blade 15. The supercharger 3 includes a turbine housing 35 that houses the turbine blades 13, a compressor housing that houses the compressor blades 15 (removed in this example), and a bearing that supports the rotating shaft 17. And a bearing housing 18 in which 7 is incorporated. In addition, the rotating body 5 is supported by the support body 39 through the bearing housing 18 by attaching the bearing housing 18 to the support body 39 described later.

Unlike the turbine housing of the finished supercharger 3, the turbine housing 35 is preferably a dedicated housing for measuring the unbalance of the rotating body 5. That is, using the configuration of FIG. 2, the unbalance of the rotating body 5 is measured, and the supercharger 3 is completed by correcting the unbalance of the rotating body 5 based on the measurement result. Thereafter, a dedicated turbine housing and compressor housing are attached to the bearing housing 18 in the completed turbocharger 3, thereby completing the supercharger 3.
In FIG. 2, a dedicated compressor housing for measuring the unbalance of the rotating body 5 may be attached to the bearing housing 18 and the unbalance of the rotating body 5 may be measured in this state. In this case, do as follows. The supercharger 3 is completed by measuring the unbalance of the rotating body 5 using the configuration of FIG. 2 and correcting the unbalance of the rotating body 5 based on the measurement result. Thereafter, a dedicated compressor housing is attached to the bearing housing 18 in the completed turbocharger 3, thereby completing the supercharger 3.

  The oil circulation recovery device 10 includes an oil circulation device 19 and a suction device 21.

  The oil circulation device 19 supplies lubricating oil to the bearing 7 of the rotating body 5 while circulating the lubricating oil when measuring the unbalance of the rotating body 5 in a state where the rotating body 5 of the rotating machine 3 is rotated. The rotary machine 3 includes an oil supply port 9 to which lubricating oil is supplied by an oil circulation device 19, and an oil discharge port 11 that discharges the lubricating oil that is supplied to the oil supply port 9 and passes through the bearing 7. The oil circulation device 19 is configured to supply lubricating oil to the oil supply port 9, receive the lubricating oil from the oil discharge port 11, and supply the lubricating oil to the oil supply port 9 again.

  The suction device 21 sucks the residual lubricating oil remaining in the rotating machine 3 when the rotating body 5 is stopped after the unbalance measurement of the rotating body 5. The suction device 21 is incorporated in the circulation path so as to constitute a part of the circulation path through which the lubricating oil circulates by the oil circulation device 19, and sends the sucked residual lubricating oil downstream in the circulation direction of the circulation path. To do.

As shown in FIG. 3, the suction device 21 has a gas supply port 21a, a suction port 21b, a negative pressure generation chamber 21c, and a delivery port 21d.
Compressed gas is supplied to the gas supply port 21a. The suction port 21b communicates with the oil discharge port 11 through a suction tube 23 described later. The negative pressure generating chamber 21c sucks the residual lubricating oil in the rotary machine 3 from the suction port 21b by generating a negative pressure with the compressed gas supplied from the gas supply port 21a. The delivery port 21d delivers the residual lubricating oil sucked into the negative pressure generating chamber 21c together with the compressed gas.

The suction device 21 is preferably provided in a housing 22 indicated by a broken line in FIG. The housing 22 has a soundproof structure. Moreover, the housing | casing 22 is being fixed to the support body 39 in FIG.
In addition to the suction device 21, an oil supply unit 29 and a rotating machine 3 described later are provided in the housing 22. Furthermore, although not shown, an unbalance removing device for the rotating body 5 may be provided in the housing 22. The unbalance removing apparatus includes, for example, a cutting tool that corrects an unbalance of the rotating body 5 by cutting the rotating body 5 and a mechanism that drives the tool.

The oil circulation device 19 includes a suction pipe 23 extending from the oil discharge port 11 to the suction port 21b and a recovery supply pipe 25 extending from the delivery port 21d to the oil supply port 9 as components of the circulation path. The lubricating oil flows through the circulation path, and thus passes through the oil supply port 9, the bearing 7, the oil discharge port 11, the suction pipe 23, the suction port 21b, the negative pressure generation chamber 21c, the delivery port 21d, and the recovery supply pipe 25 in this order. It is supposed to be.
Preferably, the suction pipe 23 is a flexible pipe (hose), is connected to the oil discharge port 11 provided in the bearing housing 18 and can be separated from the oil discharge port 11. . For example, the suction pipe 23 is moved upward toward the oil discharge port 11 by an appropriate drive means, thereby pressing the end of the suction port 23 on the side of the oil discharge port 11 against the bearing housing 18. The opening at the end of the oil drain port 11 can be connected to the oil drain port 11. From this state, the opening of the suction port 23 side end portion of the suction port 23 is separated from the oil discharge port 11 by moving the suction tube 23 away from the oil discharge port 11 (downward) by the driving means. Can do.

  The oil circulation device 19 includes a tank 27, an oil supply unit 29, a heating device 31, a hydraulic feeding device 33, and the like. The recovery supply pipe 25 includes a recovery pipe 25 a extending from the delivery port 21 d to the tank 27, and an oil supply pipe 25 b extending from the tank 27 to the oil supply unit 29. The tank 27 and the oil supply unit 29 are components of the circulation path.

  The tank 27 is provided in the middle of the collection supply pipe 25. When the rotating body 5 is rotated, the lubricating oil flows from the oil discharge port 11 into the recovery tube 25a through the suction tube 23, the suction port 21b, the negative pressure generation chamber 21c, and the delivery port 21d. Thus, the lubricating oil that has flowed into the recovery pipe 25 a is sent to the tank 27 through the recovery pipe 25 a and is temporarily stored in the tank 27. The lubricating oil in the tank 27 is sent to the oil supply unit 29 through the oil supply pipe 25b.

  The oil supply unit 29 is connected to the oil supply port 9 and has a structure for supplying the lubricating oil from the oil supply pipe 25 b to the oil supply port 9. Note that when the residual lubricating oil is sucked by the suction device 21 after the circulation of the lubricating oil is stopped, the oil supply unit 29 is disconnected from the oil supply port 9 by an appropriate driving means. As a result, the oil supply port 9 is opened, so that the suction device 21 can efficiently suck the residual lubricating oil.

  The heating device 31 heats the lubricating oil circulating in the circulation path. In the example of FIG. 2, the heating device 31 is provided in the tank 27, but may be provided in another location.

  The hydraulic feeding device 33 pumps the lubricating oil so that the lubricating oil circulates through the circulation path. In the example of FIG. 2, the hydraulic feeding device 33 includes pumps 33a and 33b. The pump 33 a is provided in the recovery pipe 25 a and pumps the lubricating oil in the recovery pipe 25 a to the tank 27. The pump 33b is provided in the tank 27 and pumps the lubricating oil in the tank 27 to the oil supply pipe 25b.

  The unbalance measurement of the rotating body 5 is performed as follows.

  A turbine housing 35 that houses the turbine blades 13 is attached to a vibration measurement support 39 with bolts 37 or the like. Thereafter, a compressed gas having the same pressure as the exhaust gas of the engine is supplied to the turbine blades 13 through a flow path (not shown) formed in the turbine housing 35, whereby the turbine blades 13, the compressor blades 15 and the rotation are supplied. The rotating body 5 composed of the shaft 17 is driven to rotate. When the rotating body 5 reaches a predetermined rotational speed, the rotating body 5 is measured by a rotation angle sensor (not shown) while measuring vibration (that is, acceleration) by an acceleration pickup (not shown) attached to the support 39. Measure the rotation angle. Based on the measured vibration and rotation angle, unbalance data of the rotating body is obtained.

  In the above-described imbalance measurement, with the oil supply unit 29 connected to the oil supply port 9, the hydraulic feeding device 33 pumps the lubricant so that the lubricant circulates through the circulation path. Thereby, when the rotating body 5 is rotating, the lubricating oil circulating in the circulation path passes through the bearing 7. At this time, it is preferable to close a valve (not shown) provided in a pipe (not shown) for supplying the compressed gas to the gas supply port 21a.

When the unbalance measurement is completed, the compressed gas is supplied to the gas supply port 21a, whereby the negative pressure generating chamber 21c of the suction device 21 generates a negative pressure, thereby passing through the suction pipe 23 in the rotary machine 3. The residual lubricating oil is sucked from the suction port 21b. The suction device 21 sends the sucked residual lubricating oil together with the compressed gas into the tank 27 through the recovery pipe 25a from the delivery port 21d.
In addition, at the time of the suction which supplies compressed gas to the gas supply port 21a, it is good to keep the fuel supply unit 29 away from the fuel supply port 9 as mentioned above. Thereby, the residual lubricating oil is easily sucked by the suction device 21. Further, at the time of suction, the pump 33b is stopped, but the pump 33a is preferably operated.

  According to the oil circulation recovery apparatus 10 according to the present embodiment described above, the following effects can be obtained.

(A) The suction device 21 sucks the residual lubricating oil in the rotating machine 3 and returns it to the circulation path, so that the reduction of the lubricating oil in the circulation path can be suppressed and sucked from the rotating machine 3 There is no need to return the residual lubricating oil to the circulation path.

(B) In the structure of FIG. 1, it is necessary to provide the vacuum cleaner 61 and the valves 63 and 65, and the number of apparatuses to install increases. On the other hand, in this embodiment, since the suction device 21 is incorporated in the circulation path as shown in FIG. 2, the cleaner 61 and the valves 63 and 65 can be omitted. Therefore, the number of devices to be installed can be reduced.
(C) In the configuration of FIG. 1, the pressure in the recovery pipe 25 a may drop due to pressure loss due to the restriction of the valve 63, and the lubricating oil may not circulate. On the other hand, in this embodiment, since the suction device 21 is incorporated in the circulation path as shown in FIG. 2, the valve 63 can be omitted, and as a result, a pressure drop in the recovery pipe 25a does not occur.

(D) Since the suction device 21 is incorporated in the circulation path at the connection portion between the suction tube 23 and the recovery tube 25a, noise generated when the residual lubricating oil is sucked by the suction device 21 is generated in the circulation route (negative It is difficult to leak outside the pressure generation chamber 21c). Furthermore, since the suction device 21 is accommodated in the housing 22 having a soundproof structure, it is possible to further reduce leakage of noise due to suction of the suction device 21 to the outside. Since the suction device 21 can be made smaller than the vacuum cleaner 61, the installation space for the suction device 21 can be easily secured in the housing 22.

(E) The production cost of the suction device 21 is significantly lower than the production cost of the vacuum cleaner 61.

(F) In this embodiment, since the suction device 21 is incorporated in the circulation path as shown in FIG. 2, the suction device 21 can be disposed close to the oil discharge port 11. Thereby, the suction force of the suction device 21 can be exhibited efficiently. Therefore, after the rotary machine 3 is removed from the circulation path, there is no need for a vacuum cleaner that further sucks the lubricant remaining in the rotary machine 3 without being completely sucked.

  The present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 3 Rotating machine, 5 Rotating body, 7 Bearing, 9 Oil supply port, 10 Oil circulation collection device, 11 Oil discharge port, 13 Turbine blade, 15 Compressor blade, 17 Rotating shaft, 18 Bearing housing, 19 Oil circulation device, 21 Suction device , 21a Gas supply port, 21b Suction port, 21c Negative pressure generating chamber, 21d Outlet, 23 Suction tube, 25 Recovery supply tube, 25a Recovery tube, 25b Oil supply tube, 27 Tank, 29 Oil supply unit, 31 Heating device, 33 Hydraulic pressure Feeder, 33a pump, 33b pump, 35 turbine housing, 37 bolts, 39 support

Claims (3)

When rotating the rotating body of the rotating machine, supply the lubricating oil to the bearing of the rotating body while circulating the lubricating oil, and when the supply of lubricating oil to the bearing is stopped, the residual lubricating oil remaining in the rotating machine is removed. A recoverable oil circulation recovery device,
An oil circulation device that supplies the bearings of the rotating body while circulating the lubricating oil when rotating the rotating body of the rotating machine;
A suction device that sucks residual lubricating oil in the rotating machine when supply of lubricating oil to the bearing is stopped,
The suction device is incorporated into the circulation path so as to constitute a part of the circulation path through which the lubricating oil circulates by the oil circulation device, and sends out the sucked residual lubricating oil to the downstream side in the circulation direction of the circulation path. An oil circulation recovery device characterized by that. The rotating machine has an oil supply port to which lubricating oil is supplied by an oil circulation device, and an oil discharge port that discharges the lubricating oil supplied to the oil supply port and passed through the bearing,
The suction device includes a gas supply port to which compressed gas is supplied, a suction port communicating with the oil discharge port, and a negative pressure generated by the compressed gas supplied from the gas supply port. A negative pressure generating chamber for sucking the residual lubricating oil from the suction port; and a delivery port for sending the residual lubricating oil sucked into the negative pressure generating chamber together with the compressed gas;
The oil circulation device includes, as components of the circulation path, a suction pipe extending from the oil discharge port to the suction port, and a recovery supply pipe extending from the delivery port to the oil supply port,
The lubricating oil flows through the circulation path, so that it passes through the oil supply port, the bearing, the oil discharge port, the suction pipe, the suction port, the negative pressure generation chamber, the delivery port, and the recovery supply pipe in this order. The oil circulation collection device according to claim 1 characterized by things. In the middle of the recovery supply pipe, a tank for storing lubricating oil is provided,
The oil circulation recovery device according to claim 2, wherein the suction device sends the residual lubricating oil into the tank together with the compressed gas from the delivery port.