CN115773160A - Thin-wall rigidity reinforcing device, steam turbine using thin-wall rigidity reinforcing device and using method of steam turbine - Google Patents
Thin-wall rigidity reinforcing device, steam turbine using thin-wall rigidity reinforcing device and using method of steam turbine Download PDFInfo
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- CN115773160A CN115773160A CN202211365601.3A CN202211365601A CN115773160A CN 115773160 A CN115773160 A CN 115773160A CN 202211365601 A CN202211365601 A CN 202211365601A CN 115773160 A CN115773160 A CN 115773160A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000002708 enhancing effect Effects 0.000 claims description 44
- 238000009434 installation Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000010977 unit operation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000010030 laminating Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a thin-wall rigidity reinforcing device, a steam turbine using the device and a using method thereof, relating to the technical field of steam turbines and comprising a reinforcing device body, wherein two ends of the reinforcing device body are respectively connected with a cylinder contact block and a bearing seat contact block; the cylinder contact block comprises a cylinder contact surface, and the cylinder contact surface is an arc surface matched with the surface of a cylinder; the bearing seat contact block comprises a bearing seat contact surface, and the bearing seat contact surface is an arc surface matched with the surface of the bearing seat; the reinforcing device body is provided with a load adjusting device which can provide loads for two ends of the reinforcing device body. According to the thin-wall rigidity reinforcing device, the steam turbine using the device and the using method of the thin-wall rigidity reinforcing device, the thin-wall rigidity reinforcing device with adjustable load and length is used as an external structure, and the thin-wall rigidity reinforcing device can adapt to units in different spaces and under different vibration conditions; the local rigidity of the cylinder is enhanced, and the unit operation safety caused by overlarge vibration of the bearing seat is avoided.
Description
Technical Field
The invention relates to the technical field of steam turbines, in particular to a thin-wall rigidity reinforcing device, a steam turbine using the device and a using method of the steam turbine.
Background
In order to shorten the span of the steam turbine, part of the units are provided with bearings on the cylinders. Because the bearing bears the load of the rotor, and the low-pressure cylinder is formed by welding thin steel plates, the deformation of the cylinder causes the absolute vibration of the bearing seat at the position to be large under the condition of high vacuum or high load, and the normal operation of the unit is influenced.
On the spot because the condition restriction, generally can't strengthen low-pressure cylinder inside, can't change the bearing frame simultaneously and unsettled, the rigidity can't carry out structural change to the sensibility of cylinder deformation simultaneously, can't externally carry out the rigidity and strengthen.
Because the cylinder pre-loading position is conical, the bearing seat is cylindrical, the field installation is inconvenient, and the contact area is limited. If the contact area is too small, local deformation of the thin wall may result. Therefore, it is urgently needed to design a rigidity enhancing device which can conveniently adjust the torque and the length and can adjust the length and is convenient to install.
Disclosure of Invention
The invention aims to: aiming at the existing problems, the invention provides the thin-wall rigidity reinforcing device, the steam turbine using the thin-wall rigidity reinforcing device and the using method thereof, the thin-wall rigidity reinforcing device is adopted as an external structure, the influence of whether the unit runs or not is avoided, and meanwhile, the load and the length of the thin-wall rigidity reinforcing device can be adjusted, so that the thin-wall rigidity reinforcing device can adapt to units in different spaces and under different vibration conditions; local rigidity of the cylinder is enhanced through the external thin-wall rigidity enhancing device, and the unit operation safety caused by overlarge vibration of the bearing seat is avoided.
The technical scheme adopted by the invention is as follows:
the thin-wall rigidity reinforcing device comprises a reinforcing device body, wherein two ends of the reinforcing device body are respectively connected with a cylinder contact block and a bearing seat contact block; the cylinder contact block comprises a cylinder contact surface, and the cylinder contact surface is an arc surface matched with the surface of a cylinder; the bearing seat contact block comprises a bearing seat contact surface, and the bearing seat contact surface is an arc surface matched with the surface of the bearing seat; the reinforcing device body is provided with a load adjusting device which can provide loads for two ends of the reinforcing device body.
By adopting the technical scheme, the cambered surface structure can improve the fitting degree, ensure that the thin-wall rigidity reinforcing device serving as an external structure can be matched with the bearing seat and the cylinder, reinforce the local rigidity of the cylinder and avoid the safe operation of the unit caused by the overlarge vibration of the bearing seat.
Further, the cylinder contact block is hinged with the reinforcing device body, and the cylinder contact block can rotate relative to the reinforcing device body; the bearing seat contact block is hinged to the reinforcing device body and can rotate relative to the reinforcing device body.
Furthermore, a length adjusting device capable of adjusting the length of the reinforcing device body is arranged on the reinforcing device body.
Further, the length adjusting device comprises a size adjusting structure and a fine adjusting structure; the size adjusting structure comprises a replacing part and an installing part, and two ends of the replacing part are detachably connected to the reinforcing device body through the installing part; the fine adjustment structure can adjust the relative distance between the cylinder contact block and the bearing seat contact block.
By adopting the technical scheme, the distance between the cylinder and the bearing seat can be pre-measured, the replacement part with a proper size is selected according to the distance, so that the device can be adapted to units with different space conditions, and the length is adjusted in an auxiliary manner through the fine adjustment structure, so that two ends of the reinforcing device body are respectively attached to the cylinder and the bearing seat.
Further, the fine setting structure is for setting up in the screw rod section of reinforcing apparatus body and the movable section that matches with the screw rod section, the movable section can be followed the screw rod section and removed, the movable section passes through second lock nut and can dismantle with the screw rod section and be connected.
Due to the adoption of the technical scheme, the length of the reinforcing device body can be finely adjusted by rotating the movable section, and the adjusting mode is simple.
Furthermore, one end of the load adjusting device is a limiting end, the other end of the load adjusting device is an adjusting end, the limiting end limits the position of the load adjusting device on the reinforcing device body, the adjusting end comprises a load adjusting nut and a first locking nut, the load adjusting nut can act on a spring in the load adjusting device, load adjustment is carried out by controlling the compression amount of the spring, and the first locking nut can limit the load adjusting nut; the limiting end can be a limiting shaft shoulder or a limiting nut.
Further, the bearing seat contact surface and/or the cylinder contact surface are/is covered with a flexible contact layer. Due to the adoption of the technical scheme, the rigid connection between the contact surface of the bearing seat and between the contact surface of the cylinder and the cylinder is changed into flexible connection, so that the laminating effect is better.
The steam turbine using the thin-wall rigidity enhancing device comprises a cylinder, a bearing seat and the thin-wall rigidity enhancing device, wherein the thin-wall rigidity enhancing device is arranged between the cylinder and the bearing seat and comprises an enhancing device body, and two ends of the enhancing device body are respectively connected with a cylinder contact block and a bearing seat contact block; the cylinder contact block comprises a cylinder contact surface, and the cylinder contact surface is an arc surface matched with the surface of a cylinder; the bearing seat contact block comprises a bearing seat contact surface, and the bearing seat contact surface is an arc surface matched with the surface of the bearing seat; the reinforcing device body is provided with a load adjusting device which can provide loads for two ends of the reinforcing device body; the cylinder contact block is fixed on the surface of the cylinder through a fixing piece, and the bearing seat contact block is fixed on the surface of the bearing seat through a fixing piece.
Further, a plurality of said thin-walled rigidity enhancing means are arranged circumferentially between the cylinder and the bearing housing along the bearing housing.
Due to the adoption of the technical scheme, if the bearing seat vibrates greatly, a plurality of thin-wall rigidity reinforcing devices can be arranged at the same time, and the plurality of thin-wall rigidity reinforcing devices can be uniformly distributed along the circumferential direction of the bearing seat until the vibration of the bearing seat is reduced to a set threshold value.
The use method of the thin-wall rigidity reinforcing device comprises the following steps:
size determination step: and pre-measuring the distance between the cylinder and the bearing seat, selecting a replacement part with a proper size according to the distance, and connecting the two ends of the replacement part to the reinforcing device body through the mounting part to form the complete thin-wall rigidity reinforcing device.
The installation step: the thin-wall rigidity enhancing device is arranged between a cylinder and a bearing seat, a bearing seat contact block positioned at one end of a body of the enhancing device corresponds to a bearing seat, a cylinder contact block positioned at the other end of the body of the enhancing device corresponds to the cylinder, a bearing seat contact surface in a cambered structure in the bearing seat contact block is attached to the surface of the bearing seat and fixed through a fixing piece, a fine adjustment structure is adjusted, the length of the body of the enhancing device is changed, the cylinder contact block is abutted to the surface of the cylinder, the angle of the cylinder contact block is adjusted, the cylinder contact surface in the cambered structure in the cylinder contact block is attached to the surface of the cylinder, and the cylinder contact block is fixed to the surface of the cylinder through the fixing piece;
and (3) load adjustment: the unit is started, vibration of the bearing seat is monitored in real time, the load adjusting nut on the reinforcing device body is adjusted, the load adjusting nut acts on the load adjusting device on the reinforcing device body, the compression amount of a spring in the load adjusting device is changed along with the load adjusting nut, when the vibration of the bearing seat is reduced to be within a set threshold value, the load adjusting device is stopped being adjusted, and load locking is carried out by limiting the load adjusting device through the locking nut.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the thin-wall rigidity reinforcing device is used as an external structure, is not influenced by whether the unit runs or not, can adjust the load and the length of the thin-wall rigidity reinforcing device, and can adapt to units in different spaces and under different vibration conditions; the cambered surface structure of cylinder contact piece and bearing frame contact piece can improve the laminating degree, ensures that the thin wall rigidity reinforcing means who is external structure can match with bearing frame and cylinder, strengthens the local rigidity of cylinder, avoids the too big unit operation safety that leads to of bearing frame vibration. The distance between the cylinder and the bearing seat can be pre-measured, the replacement part with a proper size is selected according to the distance, so that the device can be adapted to units with different space conditions, the length is adjusted in an auxiliary mode through the fine adjustment structure, two ends of the reinforcing device body are attached to the cylinder and the bearing seat respectively, and the length adjustment is convenient and fast. Become the rigid connection between bearing frame contact surface and the bearing frame, between cylinder contact surface and the cylinder flexible connection, the laminating effect is better. If according to the vibration condition of bearing frame, set up a plurality of thin wall rigidity reinforcing apparatus simultaneously, ensure that the vibration of bearing frame reduces to within the settlement threshold.
Drawings
FIG. 1 is a schematic view of a thin-walled rigidity enhancement device of the present invention employing a long replacement section;
FIG. 2 is a schematic view of the thin-walled rigidity enhancement device of the present invention employing a short-sized replacement portion;
FIG. 3 is a front view of the thin-walled stiffness enhancing device of the present invention in cooperation with a steam turbine;
FIG. 4 is a side view of a plurality of thin-walled stiffness enhancing devices of the present invention in cooperation with a steam turbine.
The labels in the figure are: 1-cylinder contact block, 2-adjustable hinge, 3-limit end, 4-load adjusting device, 5-load adjusting nut, 6-first locking nut, 7-size adjusting structure, 701-installation part, 702-replacement part, 8-second locking nut, 9-fine adjusting structure, 10-bearing seat contact block, 11-cylinder, 12-bearing seat.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The thin-wall rigidity reinforcing device comprises a reinforcing device body, wherein two ends of the reinforcing device body are respectively connected with a cylinder contact block 1 and a bearing seat contact block 10; the cylinder contact block 1 comprises a cylinder contact surface, and the cylinder contact surface is an arc surface matched with the surface of a cylinder 11; the bearing seat contact block 10 comprises a bearing seat contact surface, and the bearing seat contact surface is an arc surface matched with the surface of a bearing seat 12; the reinforcing device body is provided with a load adjusting device 4 which can provide loads for two ends of the reinforcing device body. Specifically speaking, the cambered surface structure can improve the laminating degree, ensures that a thin-wall rigidity reinforcing device serving as an external structure can be matched with the bearing seat 12 and the cylinder 11, reinforces the local rigidity of the cylinder 11, and avoids the safe operation of the unit caused by the overlarge vibration of the bearing seat 12.
The cylinder contact block 1 is hinged with the reinforcing device body, and the cylinder contact block 1 can rotate relative to the reinforcing device body; the bearing seat contact block 10 is hinged with the reinforcing device body, and the bearing seat contact block 10 can rotate relative to the reinforcing device body.
The reinforcing device body is provided with a length adjusting device capable of adjusting the length of the reinforcing device body.
The length adjusting device comprises a size adjusting structure 7 and a fine adjusting structure 9; the size adjusting structure 7 comprises a replacing part 702 and a mounting part 701, wherein two ends of the replacing part 702 are detachably connected to the reinforcing device body through the mounting part 701; the fine adjustment structure 9 can adjust the relative distance between the cylinder contact block 1 and the bearing seat contact block 10. Specifically, the distance between the cylinder 11 and the bearing seat 12 can be measured in advance, and the replacement part 702 with a suitable size is selected according to the distance, so that the present embodiment can be adapted to units with different space conditions, and then the length is adjusted in an auxiliary manner through the fine adjustment structure 9, so as to ensure that the two ends of the reinforcing device body are respectively attached to the cylinder 11 and the bearing seat 12. Preferably, the installation part 701 is equipped with the internal thread and the nut that match with the external thread that set up on for the both ends of replacement portion 702 respectively, the reinforcing apparatus body, the tip of replacement portion 702 is through the screw thread screw in reinforcing apparatus is originally internal to through nut locking, accomplish the installation.
Fine setting structure 9 is for setting up in the screw rod section of reinforcing apparatus body and the activity section that matches with the screw rod section, the screw rod section removal can be followed to the activity section, the activity section can be dismantled with the screw rod section through second lock nut 8 and be connected. Specifically, the movable section is rotated to finely adjust the length of the reinforcing device body, and the adjusting mode is simple. Preferably, the movable section is a pin head.
One end of the load adjusting device 4 is a limiting end 3, the other end of the load adjusting device is an adjusting end, the limiting end 3 limits the position of the load adjusting device 4 on the reinforcing device body, the adjusting end comprises a load adjusting nut 5 and a first locking nut 6, the load adjusting nut 5 can act on a spring in the load adjusting device 4, load adjustment is carried out by controlling the compression amount of the spring, and the first locking nut 6 can limit the load adjusting nut 5; the limiting end 3 is a limiting nut.
And the contact surface of the bearing seat and the contact surface of the cylinder are covered with a flexible contact layer. Specifically speaking, the rigid connection between the bearing seat contact surface and the bearing seat 12 and the rigid connection between the cylinder contact surface and the cylinder 11 are changed into flexible connection, so that the attaching effect is better.
Example 2
The steam turbine using the thin-wall rigidity enhancing device comprises a cylinder 11, a bearing seat 12 and a thin-wall rigidity enhancing device, wherein the thin-wall rigidity enhancing device is arranged between the cylinder 11 and the bearing seat 12 and comprises an enhancing device body, and two ends of the enhancing device body are respectively connected with a cylinder contact block 1 and a bearing seat contact block 10; the cylinder contact block 1 comprises a cylinder contact surface, and the cylinder contact surface is an arc surface matched with the surface of a cylinder 11; the bearing seat contact block 10 comprises a bearing seat contact surface, and the bearing seat contact surface is an arc surface matched with the surface of a bearing seat 12; the reinforcing device body is provided with a load adjusting device 4 which can provide loads for two ends of the reinforcing device body; the cylinder contact block 1 is fixed on the surface of the cylinder 11 through a fixing piece, and the bearing seat contact block 10 is fixed on the surface of a bearing seat 12 through a fixing piece.
Example 3
Embodiment 3 replaces the arrangement of the thin-walled rigidity enhancing means in embodiment 2, and as shown in fig. 4, three of the thin-walled rigidity enhancing means are arranged between the cylinder 11 and the bearing housing 12 in the circumferential direction of the bearing housing 12. The distance between two adjacent thin-wall rigidity reinforcing devices is equal. Specifically, if the bearing housing 12 vibrates greatly, a plurality of thin-walled rigidity enhancing devices may be provided at the same time, and the plurality of thin-walled rigidity enhancing devices may be uniformly arranged along the circumferential direction of the bearing housing 12 until the vibration of the bearing housing 12 is reduced to within a set threshold value.
Example 4
The use method of the thin-wall rigidity enhancing device, as shown in figures 1-4, comprises the following steps: size determination step: the distance between the cylinder 11 and the bearing seat 12 is measured, a replacement part 702 with an appropriate size is selected according to the distance, and both ends of the replacement part 702 are connected to the reinforcing device body through the mounting part 701 to form a complete thin-wall rigidity reinforcing device.
The installation step: placing a thin-wall rigidity enhancing device between a cylinder 11 and a bearing seat 12, enabling a bearing seat contact block 10 positioned at one end of a body of the enhancing device to correspond to the bearing seat 12, enabling a cylinder contact block 1 positioned at the other end of the body of the enhancing device to correspond to the cylinder 11, attaching a bearing seat contact surface in a cambered surface structure in the bearing seat contact block 10 to the surface of the bearing seat 12, fixing the bearing seat contact block and the cylinder 11 through a fixing piece, adjusting a fine adjustment structure 9, changing the length of the body of the enhancing device, enabling the cylinder contact block 1 to abut against the surface of the cylinder 11, adjusting the angle of the cylinder contact block 1, enabling the cylinder contact surface in the cambered surface structure in the cylinder contact block 1 to be attached to the surface of the cylinder 11, and fixing the cylinder contact block 1 to the surface of the cylinder 11 through the fixing piece;
a load adjusting step: and starting the unit, monitoring the vibration of the bearing seat 12 in real time, adjusting the load adjusting nut 5 on the reinforcing device body, enabling the load adjusting nut 5 to act on the load adjusting device 4 on the reinforcing device body, changing the compression amount of a spring in the load adjusting device 4 along with the load adjusting nut 5, stopping adjusting the load adjusting device 4 when the vibration of the bearing seat 12 is reduced to be within a set threshold value, and limiting the load adjusting device 4 through a locking nut to carry out load locking.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to aid in understanding the method and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. The thin-wall rigidity reinforcing device comprises a reinforcing device body and is characterized in that two ends of the reinforcing device body are respectively connected with a cylinder contact block and a bearing seat contact block; the cylinder contact block comprises a cylinder contact surface, and the cylinder contact surface is an arc surface matched with the surface of a cylinder; the bearing seat contact block comprises a bearing seat contact surface, and the bearing seat contact surface is an arc surface matched with the surface of the bearing seat; the reinforcing device body is provided with a load adjusting device which can provide loads for two ends of the reinforcing device body.
2. The thin-walled rigidity enhancement device of claim 1, wherein the cylinder contact block is hinged to the enhancement device body, the cylinder contact block being rotatable relative to the enhancement device body; the bearing seat contact block is hinged to the reinforcing device body and can rotate relative to the reinforcing device body.
3. The thin-walled rigidity enhancement device of claim 1, wherein the enhancement device body is provided with a length adjustment device for adjusting the length of the enhancement device body.
4. The thin-walled rigidity enhancement device of claim 3, wherein the length adjustment device comprises a size adjustment structure and a fine adjustment structure; the size adjusting structure comprises a replacing part and an installing part, and two ends of the replacing part are detachably connected to the reinforcing device body through the installing part; the fine adjustment structure can adjust the relative distance between the cylinder contact block and the bearing seat contact block.
5. The thin-walled rigidity enhancing device of claim 4, wherein the fine adjustment structure is a screw section arranged on the body of the enhancing device and an active section matched with the screw section, the active section can move along the screw section, and the active section is detachably connected with the screw section through a second locking nut.
6. The thin-wall rigidity enhancing device according to claim 1, wherein the load adjusting device has a limiting end at one end and an adjusting end at the other end, the limiting end limits the position of the load adjusting device on the body of the enhancing device, the adjusting end comprises a load adjusting nut and a first locking nut, the load adjusting nut can act on a spring in the load adjusting device, the load adjustment is carried out by controlling the compression amount of the spring, and the first locking nut can limit the load adjusting nut; the limiting end can be a limiting shaft shoulder or a limiting nut.
7. The thin-walled rigidity enhancement device of claim 1, wherein the bearing seat contact surface and/or the cylinder contact surface is covered with a flexible contact layer.
8. The steam turbine using the thin-wall rigidity enhancing device comprises a cylinder, a bearing seat and the thin-wall rigidity enhancing device, and is characterized in that the thin-wall rigidity enhancing device is arranged between the cylinder and the bearing seat, the thin-wall rigidity enhancing device comprises an enhancing device body, and two ends of the enhancing device body are respectively connected with a cylinder contact block and a bearing seat contact block; the cylinder contact block comprises a cylinder contact surface, and the cylinder contact surface is an arc surface matched with the surface of a cylinder; the bearing seat contact block comprises a bearing seat contact surface, and the bearing seat contact surface is an arc surface matched with the surface of the bearing seat; the reinforcing device body is provided with a load adjusting device which can provide loads for two ends of the reinforcing device body; the cylinder contact block is fixed on the surface of the cylinder through a fixing piece, and the bearing seat contact block is fixed on the surface of the bearing seat through a fixing piece.
9. The steam turbine using the thin-walled rigidity enhancing apparatus according to claim 8, wherein a plurality of the thin-walled rigidity enhancing apparatuses are arranged between the cylinder and the bearing housing in a circumferential direction of the bearing housing.
10. The use method of the thin-wall rigidity reinforcing device is characterized by comprising the following steps: and (3) size determination: and pre-measuring the distance between the cylinder and the bearing seat, selecting a replacement part with a proper size according to the distance, and connecting the two ends of the replacement part to the reinforcing device body through the mounting part to form the complete thin-wall rigidity reinforcing device.
The installation step: the thin-wall rigidity enhancing device is arranged between a cylinder and a bearing seat, a bearing seat contact block positioned at one end of a body of the enhancing device corresponds to the bearing seat, a cylinder contact block positioned at the other end of the body of the enhancing device corresponds to the cylinder, a bearing seat contact surface in a cambered surface structure in the bearing seat contact block is attached to the surface of the bearing seat and fixed through a fixing piece, a fine adjustment structure is adjusted, the length of the body of the enhancing device is changed, the cylinder contact block is abutted to the surface of the cylinder, the angle of the cylinder contact block is adjusted, a cylinder contact surface in the cambered surface structure in the cylinder contact block is attached to the surface of the cylinder, and the cylinder contact block is fixed to the surface of the cylinder through the fixing piece;
and in the load adjusting step, the unit is started, the vibration of the bearing seat is monitored in real time, the load adjusting nut on the reinforcing device body is adjusted, the load adjusting nut acts on the load adjusting device on the reinforcing device body, the compression amount of a spring in the load adjusting device is changed along with the load adjusting nut, the load adjusting device is stopped being adjusted when the vibration of the bearing seat is reduced to be within a set threshold value, and the load adjusting device is limited by a locking nut to be locked.
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| CN202211365601.3A CN115773160B (en) | 2022-10-31 | 2022-10-31 | Thin-wall rigidity enhancing device, steam turbine using device and using method of device |
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| CN202211365601.3A CN115773160B (en) | 2022-10-31 | 2022-10-31 | Thin-wall rigidity enhancing device, steam turbine using device and using method of device |
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