JP5459534B2 - Rotating machine support device - Google Patents

Description

  The present invention relates to a rotary machine support device that supports a rotary machine in order to perform a rotation imbalance inspection of the rotary machine.

  The rotating machine is driven to rotate by a fluid. Such a rotary machine includes a supercharger, a turbo compressor, a gas turbine, and the like. The rotation unbalance inspection will be described using the supercharger as an example.

  Here, the supercharger will be briefly described. A supercharger is a device that supplies compressed air to an engine by using exhaust gas energy of an engine mounted on a vehicle or a ship. The supercharger has a rotating body that is rotationally driven by exhaust gas from the engine. The rotating body includes a turbine blade that is driven to rotate by exhaust gas from the engine, a compressor blade that supplies compressed air to the engine by rotating integrally with the turbine blade, and a turbine blade that is coupled to one end and a compressor that is coupled to the other end. A rotating shaft to which the wing is coupled. The supercharger includes a turbine housing that houses the turbine blades therein, a compressor housing that houses the compressor housing, and a bearing housing in which a bearing that supports the rotating shaft is incorporated.

  The rotational imbalance inspection is performed, for example, before shipping the supercharger as a product. A rotational imbalance inspection device for performing rotational unbalance inspection includes a rotating machine support device that supports a supercharger and a measurement device that measures vibration characteristics of the supercharger. FIG. 10 shows a configuration of a rotational imbalance inspection device described in Patent Document 1 below.

  In FIG. 10, the rotating machine support device includes an inspection turbine housing 32 that houses the turbine blades 31 therein, and a support body 34 that supports the supercharger 1. In FIG. 10, the measuring device includes a vibration sensor 45 that is attached to the support 34 and measures the vibration (ie, acceleration) of the support 34, an angle sensor 47 that measures the rotation angle of the rotating body, and the measured vibration. And a calculator 49 for calculating unbalanced data of the rotating body from the rotation angle.

On the other hand, a rotation imbalance inspection device as shown in FIG. 11 is assumed. In FIG. 11, the measuring device has the same configuration as the measuring device of FIG. In FIG. 11, the rotating machine support device that supports the supercharger includes a turbine housing 33 for inspection that houses the turbine blades 31 and a support 35 that supports the supercharger 1. In FIG. 11, the turbine housing 33 includes a flow path forming body 33 a attached to the inside of the support 35 and a support force transmission body 33 b to which a bearing housing 37 of the supercharger is attached. The support body 35 supports the bearing housing 37 via the support force transmission body 33b. In FIG. 11, reference numeral 39 indicates a clamp device that presses the bearing housing 37 against the support body 35 via the support force transmission body 33 b, and reference numeral 41 indicates a bolt that couples the flow path forming body 33 a to the support body 35. Reference numeral 43 denotes a bolt hole through which the bolt 41 is passed.
In FIG. 11, the support force transmission body 33b may be omitted. In this case, the configuration of the support body 35 and the like is changed so that the support body 35 directly supports the bearing housing 37. For example, the shape and dimensions of the support 35 are appropriately changed so that the clamp device 39 directly presses the bearing housing 37 against the support 35.

JP 2002-39904 A

However, in FIG. 11, since it is necessary to replace the flow path forming body 33a in accordance with the model change of the supercharger 1, the problem 1 in which the vibration characteristics of the supercharger 1 change and the replacement of the flow path forming body 33a. There is a possibility that problem 2 will take time.
The flow path forming body 33a needs to be replaced for each model of the supercharger 1. That is, when the model of the supercharger 1 that acquires unbalanced data is changed by the apparatus of FIG. 11, the flow path forming body 33a attached to the inside of the support 35 is replaced with the flow path forming body 33a that matches the changed model. Need to be replaced. The replacement work procedure is as follows (note that the following parenthesis indicates the case where the supporting force transmission body 33b is omitted).
First, the clamp device 39 is loosened, the coupling between the bearing housing 37 and the support force transmission body 33b (support body 35) is released, and the portion of the turbocharger 1 other than the turbine housing 33 is removed. Next, the support force transmission body 33b (bearing housing 37) is removed from the support 35, and then the flow path forming body 33a is taken out from the support 35 to the right side in FIG. Next, another flow path forming body 33a is attached to the inside of the support body 35 from the right side in FIG. 11, and then a support force transmission body 33b (bearing housing 37) is attached to the support body 35, and then the clamping device 39. Thus, the bearing housing 37 and the support force transmission body 33b (support body 35) are coupled. Such work causes the above-mentioned problems 1 and 2.
That is, Problem 1 is that the coupling force between the support force transmission body 33b (bearing housing 37) and the support body 35 is changed or the position of the support force transmission body 33b (bearing housing 37) is shifted due to the above-described operation. As a result, the vibration characteristic of the support 35 changes. Problem 2 is that the above work takes time.

  Therefore, an object of the present invention is to eliminate the possibility of the above problems 1 and 2.

A rotating machine support device for supporting a rotating machine to perform a rotation unbalance inspection of the rotating machine,
The rotating machine includes a rotating body having turbine blades that are driven to rotate.
The rotating machine support device includes a turbine housing that accommodates the turbine blades therein, and a support that supports a stationary member that rotatably supports the rotating body,
The turbine housing has a flow path forming body in which a flow path for flowing a fluid for rotationally driving the turbine blades is formed, and the flow path forming body is attached to the inside of the support body,
There is provided a rotating machine support device, wherein an extraction hole for taking out the flow path forming body from the inside of the support is formed in the support on the side opposite to the stationary side member. The

In the rotating machine support device of the present invention described above, the flow path forming body can be taken out from the take-out hole on the side opposite to the stationary side member, so that the flow path forming body is removed from the support body without removing the stationary side member from the support body. Can be taken out.
Therefore, when the flow path forming body is replaced, it is not necessary to remove the stationary side member from the support body, so that it is possible to prevent a change in vibration characteristics due to the detachment of the stationary side member with respect to the support body.
Further, when the flow path forming body is replaced, the operation of detaching the stationary side member from the support body is not required, so that the flow path forming body can be replaced in a short time.

  According to a preferred embodiment of the present invention, the turbine housing includes a support force transmission body, and the support body supports the stationary member via the support force transmission body.

With this configuration, since the flow path forming body can be taken out from the take-out hole on the side opposite to the support force transmitting body, the flow path forming body can be taken out of the support body without removing the support force transmitting body from the support body.
Therefore, when replacing the flow path forming body, it is not necessary to remove the support force transmission body from the support body, so that it is possible to prevent changes in vibration characteristics due to the attachment / detachment of the support force transmission body with respect to the support body.
Further, when the flow path forming body is replaced, the work of detaching the supporting force transmission body from the support body is not required, and therefore the flow path forming body can be replaced in a short time.

  According to a preferred embodiment of the present invention, an extraction hole closing body for closing the extraction hole is provided, and the extraction hole closing body is detachable from the support body.

  As described above, since the extraction hole closing body that closes the extraction hole is made detachable from the support body, the flow passage is formed from the inside of the support body through the extraction hole after removing the extraction hole closing body. The body can be taken out.

  A discharge hole through which the fluid from the turbine blade passes may be formed in the outlet hole closing body.

  According to a preferred embodiment of the present invention, there is provided a pressing member that sandwiches the pressed portion of the stationary side member between the supporting force transmitting body, and the pressing member faces the supporting force transmitting body. A pressing force is applied to.

As described above, the pressing member that sandwiches the pressed portion of the stationary side member between the supporting force transmitting body causes the pressing force to act on the pressed portion, so that the supporting body is stationary member via the supporting force transmitting body. Support. As a result, the rotating machine can be supported without a flow path forming body having a low rigidity and natural frequency. As a result, the influence of the flow path forming body on the vibration characteristics can be reduced.
That is, a flow path forming body which is a portion (portion having a function of driving turbine blades) that forms a flow path for flowing a fluid for driving turbine blades in the turbine housing, and a stationary side member (where the flow passage is not formed) (For example, a bearing housing) is separated (for example, divided) from a supporting force transmission body that has a function of supporting a rotating machine without supporting a flow passage forming body having low rigidity and natural frequency. Is possible.
Therefore, in the rotation unbalance inspection of the rotating machine, the influence of the flow path of the turbine housing on the vibration characteristics of the rotating machine can be reduced.

  Preferably, the pressing force acts on the support body via the support force transmission body.

  Thus, the pressing member causes the pressing force to act on the support via the support force transmission body, so that the stationary member can be firmly fixed to the support by the pressing force. That is, the stationary member can be firmly fixed to the support member without using the flow channel forming body whose rigidity and natural frequency are reduced by the flow channel. Therefore, in the rotation unbalance inspection of the rotating machine, the influence of the natural frequency of the turbine housing on the vibration characteristics of the rotating machine can be eliminated or greatly reduced.

  Preferably, the support force transmission body and the support body are integrated.

  Thus, since the support force transmission body and the support body have an integral structure (for example, integral molding), the transmission path of the pressing force is stabilized. That is, the pressing force is stably transmitted from the pressing member to the support through the pressed portion and the support force transmitting body. This improves the accuracy of the rotational imbalance inspection.

According to a preferred embodiment of the present invention, the support force transmission body comprises:
A radial position with respect to the axial direction is the same as the pressed portion and an inner portion that receives the pressing force;
An extension portion extending outward from the inner portion in the radial direction to the outside of the flow path forming body with respect to the radial direction and coupled to the support body on the outer side.

  As described above, the supporting force transmission body has the same radial position as the pressed portion, the inner portion receiving the pressing force, and the radial direction outward from the inner portion in the radial direction. A path that extends to the outside of the path forming body and is coupled to the support body on the outside, so that the path forming body is avoided when the channel forming body is attached to the support body. Thus, the load of the rotating machine can be transmitted to the support.

  According to the above-described present invention, the flow path forming body can be taken out from the opposite side of the stationary side member or the supporting force transmission body without removing the stationary side member or the supporting force transmission body from the support body. The vibration characteristic change due to the attachment / detachment of the stationary side member or the supporting force transmission body with respect to can be prevented, and the flow path forming body can be replaced in a short time.

It is a block diagram of the supercharger which can apply this invention. It is a block diagram of the rotary machine support apparatus by embodiment of this invention. It is an AA arrow directional view of FIG. It is a detailed perspective view of the rotary machine support apparatus by embodiment of this invention. In FIG. 2, the state which removed the attachment hole obstruction | occlusion body is shown. It is an AA arrow directional view of FIG. It is a figure which shows the supporting force transmission body of the rotary machine support apparatus by embodiment of this invention. 1 shows a rotary machine support device in which a support force transmission body and a support body are integrated. It is a block diagram of the rotary machine support apparatus at the time of using another pressing member. The rotation imbalance inspection apparatus of patent document 1 is shown. It is a figure for demonstrating the subject of this invention.

  Embodiments 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. 1A is a configuration diagram of a supercharger 1 to which the rotating machine support device of the present invention can be applied.
As shown in FIG. 1A, the rotating body 4 of the supercharger 1 supplies the compressed air to the engine by rotating integrally with the turbine blade 3 and the turbine blade 3 that are rotationally driven by the exhaust gas of the engine. And a rotating shaft 7 to which the turbine blade 3 is coupled at one end and the compressor blade 5 is coupled at the other end. Moreover, the supercharger 1 has the stationary side member 8 which supports the above-mentioned rotary body 4 rotatably. In the example of FIG. 1A, the stationary member 8 is a bearing housing in which bearings 8a and 8b that support the rotating body 4 (rotating shaft 7) are incorporated. The supercharger 1 also includes a turbine housing 9 that houses the turbine blades 3 therein, and a compressor housing (removed in the drawings of the present application) that houses the compressor blades 5 inside. The turbine housing 9 is formed with a flow path (scroll) 9 a through which a fluid (exhaust gas from the engine) for rotationally driving the turbine blades 3 flows.
Reference numeral 2 denotes a coupling member that couples the bearing housing 8 and the turbine housing 9. FIG. 1B shows the coupling member 2 viewed from the axial direction of the rotating shaft 7. In FIG. 1B, the coupling member 2 includes a pair of semicircular arc members 2a that are divided from each other, and a bolt 2b and a nut 2c that couple the pair of semicircular arc members 2a. In addition, you may couple | bond the bearing housing 8 and the turbine housing 9 with a volt | bolt etc., without using the coupling member 2. FIG.

  FIG. 2 is a configuration diagram of the rotating machine support device 10 according to the embodiment of the present invention. FIG. 2 shows a state in which the supercharger 1 is attached to the rotating machine support device 10. 3 is a view taken along the line AA in FIG. 2 (FIG. 2 is also a view taken along the line BB in FIG. 3). FIG. 4 is a detailed perspective view of the rotating machine support device 10.

  The rotating machine support device 10 supports the rotating machine 1 in order to perform a rotation imbalance inspection of the rotating machine (supercharger 1 in this example). In the example of FIG. 2, the rotary machine supported by the rotary machine support device 10 is the supercharger 1 shown in FIG. The rotating machine support device 10 includes a turbine housing 6 for inspection, a support body 15, and a pressing member 11.

  The turbine housing 6 for inspection accommodates the turbine blades 3 therein, but is provided instead of the turbine housing 9. That is, the turbine housing 9 (and the compressor housing (not shown)) is removed from the finished turbocharger 1, and a turbine housing 6 that replaces the turbine housing 9 is provided. The turbine housing 6 and the finished turbine housing 9 are different in at least one of shape and size. The turbine housing 6 includes a flow path forming body 14 and a support force transmitting body 13. The flow path forming body 14 is formed with a flow path 14a for flowing a fluid for rotationally driving the turbine blade 3 for the rotation imbalance inspection. No flow path is formed in the support force transmission body 13. In FIG. 2, the supporting force transmission body 13 overlaps at least partially with the flow path forming body 14 when viewed from the axial direction of the rotating body 4, and the axial direction between the flow path forming body 14 and the stationary side member 8. Between. In the example of FIG. 2, the flow path forming body 14 and the support force transmission body 13 are separate members that are divided from each other, but preferably, the support force transmission body 13 and the support body 15 are integrally formed. To do. For example, the support force transmission body 13 and the support body 15 are integrally molded. The flow path 14 a includes a scroll 21 that is upstream of the turbine blade 3 and an exhaust port 23 that is downstream of the turbine blade 3.

The support 15 is a base for supporting the rotating machine (in this example, the supercharger 1). A flow path forming body 14 is attached inside the support body 15. Further, the support 15 is coupled to the support member 13 on the stationary member 8 side with respect to the axial direction, and an extraction hole 15 a is formed on the opposite side of the stationary member 8. The extraction hole 15a may be circular, for example, when viewed from the axial direction. Through the take-out hole 15a, the flow path forming body 14 can be taken out from the inside of the support body 15 to the outside in the axial direction. Further, an extraction hole closing body 18 for closing the extraction hole 15a is provided. The take-out hole closing body 18 can be attached to and detached from the support body 15. FIG. 5 shows a state where the removal hole closing body 18 is removed from the support body 15. 6 is a view taken along the line AA in FIG. In the example of FIGS. 5 and 6, a discharge hole 18 a through which the fluid from the turbine blade 3 passes is formed in the outlet hole closing body 18.
The take-out hole blocking body 18 is coupled to the flow path forming body 14 by a coupling means such as a bolt 17. Further, the take-out hole blocking body 18 is coupled to the support 15 by coupling means such as a bolt 25. In FIG. 2, reference numeral 19 denotes a bolt hole into which the bolt 17 is inserted, and reference numeral 27 denotes a bolt hole into which the bolt 25 is inserted.
Further, a passage (not shown) for passing a fluid (compressed gas) from the outside of the support 15 to the flow path 14 a may be formed in the support 15 during the rotation imbalance inspection of the supercharger 1. In FIG. 2, this compressed gas passes through the turbine blade 3 from the scroll 21 to rotate the turbine blade 3, and then goes out of the supercharger 1 through the exhaust port 23. In the example of FIG. 2, the compressed gas that has passed through the turbine blade 3 flows out of the support 15 by flowing into the discharge hole 18 a from the exhaust port 23. Instead, the compressed gas that has passed through the turbine blade 3 passes from the exhaust port 23 through a discharge hole (not shown) formed on the side surface of the support 15 (the surface facing the direction perpendicular to the paper surface of FIG. 2). By doing so, it may go out of the support 15 or pass through a discharge hole (not shown) formed on the upper surface or the lower surface of the support 15 (the surface facing upward or downward in FIG. 2). Thus, the outside of the support 15 may be taken out.

The pressing member 11 sandwiches the pressed portion 1 a of the stationary side member 8 between the supporting force transmission body 13 and applies a pressing force to the pressed portion 1 a toward the supporting force transmission body 13. The pressing force acts on the support body 15 from the pressing member 11 via the pressed portion 1 a and the support force transmission body 13.
The pressing member 11 applies a pressing force to the pressed portion 1a of the supercharger 1 at a position closer to the compressor blade 5 than the flow path 14a. 2 to 4, the pressed portion 1 a is a part of the bearing housing 8, and is a protruding portion that protrudes from the outer peripheral surface of the bearing housing 8 in the radial direction of the rotary shaft 7. This protrusion part 1a is cyclic | annular when it sees from the axial direction of the rotating shaft 7 like FIG.
In addition, a pressing force generator that presses the pressing member 11 against the pressed portion 1a is provided. In the example of FIGS. 2 to 4, a pressing force generator 12 using hydraulic pressure is provided. That is, in the example of FIGS. 2 to 4, the pressing member 11 is a clamp rod of a hydraulic clamp. In this case, the pressing member 11 may be a known swing-type clamp rod that is moved in the axial direction of the rotary shaft 7 while turning by hydraulic pressure. The hydraulic chamber to which the hydraulic pressure is supplied is formed inside a hydraulic clamp body (pressing force generator) 12, and the hydraulic clamp body 12 is fixed to the support 15. In the example of FIG. 2, four hydraulic clamps including the clamp rod 11 and the hydraulic clamp body 12 are provided at intervals in the circumferential direction of the rotary shaft 7.

The supporting force transmission body 13 sandwiches the pressed portion 1a between the pressing member 11 at a position closer to the compressor blade 5 than the flow path 14a, and the supporting force transmission body 13 receives the pressing portion by the pressing force. 1a is pressed. In FIG. 4, the code | symbol 16 shows the bolt hole into which the volt | bolt for fixing the supporting force transmission body 13 to the support body 15 is inserted (in other figure, the bolt hole 16 is abbreviate | omitted). Thus, in the example of each figure, the support force transmission body 13 is a member independent of the support body 15, but preferably, as described above, the support force transmission body 13 and the support body 15 are integrated. To do. In addition, the supporting force transmission body 13 is formed with a highly rigid material (for example, steel material).
As shown in FIG. 2, the support force transmission body 13 has an inner portion 13a and an extension portion 13b. The inner portion 13a receives the pressing force because the position in the radial direction with respect to the axial direction (that is, the radial direction of the rotary shaft 7) is the same as the pressed portion 1a. The extension portion 13b extends from the inner portion 13a outward in the radial direction to the outside of the flow path forming body 14 with respect to the radial direction, and is coupled to the support body 15 by a bolt 16 on the outer side. Apply pressing force. As a result, the pressing force can be applied to the support body 15 with little or no application of the pressing force to the flow path forming body 14. The support force transmission body 13 transmits and acts the pressing force on the support body 15 in a range R surrounded by a broken line in FIG.
FIG. 7 is a view in which members other than the support force transmission body 13 in FIG. 3 are omitted, and the support force transmission body 13 is shown. As shown in FIG. 7, the support force transmission body 13 is formed with an opening 13 c into which the bearing housing 8 is inserted. That is, the supporting force transmission body 13 is attached to the bearing housing 8 by inserting the bearing housing 8 into the opening 13c. The opening 13c is circular when viewed from the axial direction of the rotary shaft 7. On the other hand, the outer peripheral surface of the bearing housing 8 is also circular as viewed from the axial direction so as to match the shape of the opening 13c. With this configuration, the outer peripheral surface of the bearing housing 8 is inserted and fitted into the opening 13 c of the support force transmission body 13.

  The operation | work which replaces the flow-path formation body 14 in the above-mentioned rotary machine support apparatus 10 is demonstrated. First, from the state of FIG. 2, the bolts 17 and 25 are removed, the take-out hole blocking body 18 is removed from the support 15 as shown in FIG. 5, and then the flow path forming body 14 is passed through the take-out hole 15a and the support. 15 is taken out from the inside to the outside in the axial direction (left side in FIG. 5). Thereafter, the replacement flow path forming body 14 is attached in the reverse procedure. Specifically, first, the replacement flow path forming body 14 is attached to the inside of the support body 15 through the extraction hole 15a, and then the extraction hole closing body 18 is attached to the support body 15 so that the extraction hole closing body 18 is attached. And the flow path forming body 14 are coupled by a bolt 17, and the take-out hole closing body 18 and the support body 15 are coupled by a bolt 25. As a result, the flow path forming body 14 and the extraction hole closing body 18 are coupled to the support 15.

  The operation of attaching and detaching the supercharger 1 (the rotating body 4 and the stationary member 8) to the above-described rotating machine support device 10 will also be described. This operation can be performed independently of the operation of replacing the flow path forming body 14. The attachment work of the stationary member 8 is as follows. First, the turbine housing 9 and the compressor housing are removed from the finished turbocharger 1. Next, the rotating body 4 (the turbine blade 3 in this example) is passed through the opening 13c, and a part of the stationary side member 8 (the bearing housing 8 in this example) is inserted into the opening 13c of the supporting force transmitting body 13. In this state, the pressed portion 1 a of the stationary member 8 is pressed against the support body 15 via the support force transmission body 13 by the pressing member 11. Thereby, the supercharger 1 is attached and fixed to the support body 15. Note that the shape and dimensions of the stationary member 8 may be the same among different models of the rotating machine (in this example, the supercharger 1).

  The imbalance measurement using the above-described rotating machine support device 10 will be described. For unbalance measurement, a vibration sensor 45, an angle sensor 47, and a calculator 49 are provided as shown in FIG. The vibration sensor 45 is attached to the support 15 and measures vibration (ie, acceleration) of the support 15. The angle sensor 47 (for example, a magnetic sensor) is arranged to face the compressor side end of the rotating body 4 and measures the rotation angle of the rotating body 4. The computing unit 49 calculates unbalance data of the rotating body 4 from the measured vibration and rotation angle. The vibration measurement by the vibration sensor 45 and the rotation angle measurement by the angle sensor 47 are performed in a state where the rotating body 4 is rotated. As described above, the rotating body 4 is rotated as described above. This is performed by supplying a fluid to the flow path 14a of the flow path forming body 14 from the outside. Thereby, the turbine blade 3 is rotationally driven by the fluid, and the rotating body 4 rotates.

  In the rotary machine support device 10 according to the present invention described above, the following effects (1) to (5) are obtained.

(1) Since the flow path forming body 14 can be taken out from the take-out hole 15a on the opposite side to the stationary member 8 of the rotating machine 1 (that is, on the opposite side to the support force transmission body 13), The flow path forming body 14 can be taken out of the support body 15 without removing it. Accordingly, when the flow path forming body 14 is replaced, it is not necessary to remove the support force transmission body 13 from the support body 15, so that it is possible to prevent a change in vibration characteristics due to the attachment / detachment of the support force transmission body 13 to the support body 15. Further, when the flow path forming body 14 is replaced, the work of detaching the supporting force transmitting body 13 from the support 15 is not required, so that the flow path forming body 14 can be replaced in a short time.

(2) The pressing member 11 that sandwiches the pressed portion 1a of the stationary side member 8 with the supporting force transmission body 13 supports the pressing portion 1a via the supporting force transmission body 13 by applying a pressing force to the pressed portion 1a. The body 15 supports the rotating machine 1. Thereby, it becomes possible to support the rotary machine 1 without the flow path formation body 14 having low rigidity and natural frequency. As a result, the influence of the flow path forming body 14 on the vibration characteristics can be reduced.
That is, the flow path forming body 14 which is a portion (portion having a function of driving the turbine blade 3) that forms the flow path 14a through which the fluid that drives the turbine blade 3 flows in the turbine housing 6 is not formed. Since it is divided (for example, divided) from the supporting force transmission body 13 which is a part having a function of supporting the rotary machine 1 (stationary side member 8), it does not go through the flow path forming body 14 having low rigidity and natural frequency. It becomes possible to support the rotary machine 1.
Therefore, in the rotation unbalance inspection of the rotating machine 1, the influence of the flow path 14 a of the turbine housing 6 on the vibration characteristics of the rotating machine 1 can be reduced.

(3) Further, since the pressing member 11 causes the pressing force to act on the support 15 via the support force transmission body 13, the rotating machine 1 (stationary side member 8) is firmly attached to the support 15 by the pressing force. Can be fixed. That is, the stationary member 8 can be firmly fixed to the support body 15 without the flow path forming body 14 whose rigidity and natural frequency are reduced by the flow path 14a. Therefore, in the rotation imbalance inspection of the rotating machine 1, the influence of the natural frequency of the turbine housing 6 on the vibration characteristics of the rotating machine 1 can be eliminated or greatly reduced.

(4) The supporting force transmission body 13 has the same position in the radial direction as the pressed portion 1a and receives the pressing force, and the radial direction outward from the inner portion 13a in the radial direction. An extension portion 13b that extends to the outside of the flow path forming body 14 and is coupled to the support body 15 on the outside. Therefore, when the flow path forming body 14 is attached to the support body 15, the flow path forming body 14 is The load of the supercharger 1 can be transmitted to the support body 15 through a path to be avoided. Further, since the extension portion 13b applies the pressing force to the support body 15 outside the flow path forming body 14, the pressing force is applied from the pressed portion 1a to the support body 15 in a path that avoids the flow path forming body 14. Can communicate to.

(5) Furthermore, if the support force transmission body 13 and the support body 15 are made into an integral structure (for example, integral molding), the transmission path of the pressing force is stabilized. That is, the pressing force is stably transmitted from the pressing member 11 to the support body 15 through the pressed portion 1 a and the support force transmission body 13. This improves the accuracy of the rotational imbalance inspection. FIG. 8 shows a case where the support force transmission body 13 and the support body 15 are integrated.

  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. For example, each change described below may be adopted alone or in combination.

In the above-described embodiment, the pressing member 11 is a clamp rod of a hydraulic clamp. However, the pressing member 11 applies a pressing force to the pressed portion 1 a and supports the pressing force via the support force transmission body 13. Other suitable pressing members that act on the body 15 may be used. In this case, a pressing force generating device that presses the pressing member 11 against the pressed portion 1 a is provided, whereby the pressing member 11 causes a pressing force to act on the pressed portion 1 a, and this pressing force is transmitted via the support force transmission body 13. Then, it may act on the support 15.
In the present invention, as the pressing member 11, a pressing force is applied to the pressed portion 1 a, but the pressing force may not be applied to the support body 15 via the support force transmission body 13. For example, the pressing member 11 may be a bolt that presses and connects the pressed portion 1a to the supporting force transmission body 13 as shown in FIG. In FIG. 9, the head 11 a of the bolt 11 presses the pressed portion 1 a against the support force transmission body 13 and couples it. A front end portion (screw portion) of the bolt 11 is screwed into a screw hole provided in the support force transmission body 13. A plurality of bolts 11 may be provided in the circumferential direction of the rotating shaft 7. In FIG. 9, the configuration other than the bolt 11 may be the same as the configuration of FIG. 2 to FIG. 7 or FIG. Even in the case of FIG. 9, as described above, the influence of the vibration characteristics of the turbine housing 6 (flow path forming body 14) on the vibration characteristics of the supercharger 1 can be reduced.

  Moreover, the rotating machine support device of the present invention can be applied to other rotating machines such as a turbo compressor and a gas turbine in addition to the supercharger. That is, the rotating machine support device of the present invention can be applied to any rotating machine that is driven to rotate by supplying fluid to the turbine blades.

  In the above-described embodiment, the turbine housing 6 for inspection and the turbine housing 9 for finished products are different from each other in shape and size. However, according to the present invention, the turbine housing 6 and the turbine housing 9 for finished products are different. And may have the same shape and dimensions. That is, the finished product turbine housing 9 may be attached to the inside of the support 15 as the above-described turbine housing 6.

  In the above-described embodiment, the support 15 supports the stationary member 8 via the support force transmission body 13, but the support force transmission body 13 may be omitted. In this case, the support 15 directly supports the stationary side member 8. For example, the shape and dimensions of the support 15 may be changed as appropriate so that the pressing member 11 can directly press the stationary member 8 against the support 15.

  The stationary side member 8 used in the rotating machine support device 10 may be a stationary side member of a finished rotating machine (supercharger 1), or is different from a stationary side member of a finished rotating machine. Also good. As described above, when the stationary side member 8 is different from the stationary side member of the finished rotating machine, the stationary side member 8 used for the rotating machine support device 10 has a shape suitable for the rotating machine support device 10. May have dimensions.

1 turbocharger, 1a pressed part (protruding part), 3 turbine blade,
4 rotating bodies, 5 compressor blades,
6 Turbine housing for inspection, 7 rotating shaft,
8 Static side member (bearing housing), 8a, 8b bearing,
9 turbine housing, 9a flow path, 10 rotating machine support device,
11 pressing member, 12 hydraulic clamp body (pressing force generator),
13 support force transmission body, 13a inner side part, 13b extension part, 13c opening,
14 channel formation body, 14a channel, 15 support body, 15a extraction hole,
16 bolt hole, 17 bolt, 18 take-out hole closing body, 18a discharge hole 19 bolt hole, 21 scroll, 23 exhaust port,

Claims (7)

A rotating machine support device for supporting a rotating machine to perform a rotation unbalance inspection of the rotating machine,
The rotating machine includes a rotating body having turbine blades that are driven to rotate.
The rotating machine support device includes a turbine housing that accommodates the turbine blades therein, and a support that supports a stationary member that rotatably supports the rotating body,
The turbine housing has a flow path forming body in which a flow path for flowing a fluid for rotationally driving the turbine blades is formed, and the flow path forming body is attached to the inside of the support body,
A rotary machine support device, wherein an extraction hole for taking out the flow path forming body from the inside of the support is formed in the support on the side opposite to the stationary member.   The rotating machine support device according to claim 1, wherein the turbine housing includes a support force transmission body, and the support body supports the stationary side member via the support force transmission body.   The rotary machine support device according to claim 1, further comprising an extraction hole closing body that closes the extraction hole, wherein the extraction hole closing body is detachable from the support body.   The rotary machine support device according to claim 3, wherein a discharge hole through which fluid from the turbine blade passes is formed in the outlet hole closing body.   A pressing member that sandwiches a pressed portion of the stationary side member between the supporting force transmitting body, and the pressing member applies a pressing force to the pressed portion toward the supporting force transmitting body. The rotating machine support device according to claim 2, wherein   The rotating machine support device according to claim 2, wherein the pressing force acts on the support via the support force transmission body.   The rotary machine support device according to claim 2, 5 or 6, wherein the support force transmission body and the support body are integrated.

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