CN111337115A - Turbine rotor shimmy measuring device and measuring method - Google Patents
Turbine rotor shimmy measuring device and measuring method Download PDFInfo
- Publication number
- CN111337115A CN111337115A CN202010225880.8A CN202010225880A CN111337115A CN 111337115 A CN111337115 A CN 111337115A CN 202010225880 A CN202010225880 A CN 202010225880A CN 111337115 A CN111337115 A CN 111337115A
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- measuring
- adjusting
- sleeve
- fixed seat
- cylinder body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
- G01H1/006—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines of the rotor of turbo machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to a turbine rotor shimmy measuring device and a measuring method, comprising a measuring rod, a cylinder, a fixed seat cover, an adjusting spring and a measuring meter, wherein the fixed seat cover can be directly arranged on a bearing cover of a turbine unit, and a sliding measuring rod can freely slide in a certain range; the adjusting sleeve can be used for stably mounting the measuring meter and tightly pressing the sliding spring in a matching manner with the barrel, so that the measuring rod can accurately reflect the rotor shimmy degree to the measuring meter visually. The invention has simple operation, assembly and disassembly, accurate measurement and high practicability, improves the quality and the reliability of equipment, ensures the safety, has simple manufacture and can meet the management and detection requirements of the steam turbine equipment.
Description
Technical Field
The invention relates to a turbine rotor shimmy measuring device and a measuring method.
Background
The steam turbine generator unit is large-scale system equipment, has complex operation and power generation working conditions and high temperature, high pressure and high speed, and aims to detect whether the state of a steam turbine rotor shafting is good or not; whether an abnormal condition exists or not; whether a starting condition is met; analyzing the condition of the bearing and the complex vibration condition of the steam turbine; the sloshing degree of a turbine rotor is often measured according to the requirements of detecting the states of the moving and static parts in the turbine and the like. The rotor shaking degree measuring device of the existing turboset is not good in design and inaccurate in measurement, and the risk that the rotor falls, is collided and ground to influence safe operation also exists. In order to meet the management requirements of field equipment and make up for the defects of the equipment, a safe, reliable and accurate sloshing degree measuring device is elaborately designed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a device for measuring the swing vibration sloshing of a steam turbine rotor, which is safe, reliable, anytime and accurate.
The purpose of the invention is realized by the following technical scheme: a turbine rotor shimmy measuring device comprises a measuring rod, a cylinder, a fixed seat sleeve, an adjusting spring and a measuring meter; wherein:
one end of the measuring rod is provided with a measuring head, the measuring head is made of wear-resistant insulating composite materials, the steam turbine rotor can be prevented from being damaged by abrasion, the shaft of the insulating rotor can be prevented from being subjected to electric corrosion by current, and the other end of the measuring rod is connected with a measuring meter; the measuring rod is arranged in the cylinder body and is connected with the cylinder body in a sliding way; the cylinder body is arranged in the fixed seat sleeve and is movably connected with the fixed seat sleeve; the fixed seat sleeve can be firmly screwed on the bearing cover; the adjusting spring is arranged between the cylinder body and the fixed seat sleeve, and one end of the spring is fixedly connected with the fixed seat sleeve.
Preferably, the inner surface of the cylinder body is provided with a step, and a sliding spring is arranged at the step; a plurality of sliding bearings are arranged between the cylinder body and the measuring rod, the outer surfaces of the sliding bearings are fixedly connected with the inner surface of the cylinder body, the inner surfaces of the sliding bearings are slidably connected with the measuring rod, and the sliding rod can slide in a certain range; the sliding bearing comprises an L-shaped sliding bearing, and the L-shaped sliding bearing is arranged at one end of the large inner diameter of the cylinder body.
Preferably, the sliding bearing material is made of brass and has a precise clearance fit with the measuring rod.
Preferably, a boss is arranged on the outer surface of the cylinder body; the adjusting spring is arranged in the fixed seat sleeve, a step through hole is formed in the fixed seat sleeve, one end of the adjusting spring is fixedly connected with the step, and the other end of the adjusting spring is attached to one side of the boss on the cylinder body; the adjusting spring can ensure that the shaft center of the measuring rod and the shaft center of the barrel are always in the same horizontal position; an adjusting sleeve is arranged on the other side of the boss and is arranged between the barrel and the fixed seat sleeve; the adjusting sleeve is connected with the cylinder body and the fixed seat sleeve in a sliding mode.
Preferably, one end of the adjusting sleeve is provided with a threaded hole for passing through a meter adjusting screw; and a through hole for penetrating through the adjusting sleeve screw is formed in the outer surface of the fixed seat sleeve.
A method for measuring the shimmy of a steam turbine rotor comprises the following steps:
s1: the fixed seat sleeve is screwed on the bearing cover;
s2: the measuring head is propped against the steam turbine rotor, and the shimmy degree of the rotor can be transmitted to the measuring rod through the measuring head and is displayed on the measuring meter;
s3: screwing down a meter adjusting screw to fix the position of the measuring meter relative to the adjusting sleeve;
s4: adjusting the position of the adjusting sleeve to enable the measuring meter to tightly push the measuring rod, and pressing the adjusting sleeve screw to enable the adjusting sleeve screw to press the adjusting sleeve;
s5: starting the steam turbine, starting measurement, and recording data of a measuring meter;
s6: after the measurement is finished, the sleeve adjusting screw is loosened, and the barrel and all parts inside the barrel are withdrawn from the fixed seat sleeve under the action of the adjusting spring, so that the purpose that the measuring head is separated from the steam turbine rotor is achieved.
The invention has the following advantages:
1. the device can accurately measure the sloshing degree of the steam turbine rotor at any time according to the operation requirement;
2. due to the action of the adjusting spring, the measuring head and the measuring rod thereof can be automatically separated from the rotor after the measurement is finished, so that the abrasion and the collision are avoided;
3. the measuring head, the measuring rod and the measuring meter are matched, so that the swing vibration degree on the rotor can be effectively and accurately reflected to the measuring meter.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-a measuring rod; 2-a sliding bearing; a 201-L shaped sliding bearing; 3-a cylinder body; 4-fixing the seat cover; 5-adjusting sleeve; 6-a sliding spring; 7-adjusting the spring; 8-a measuring meter; 9-adjusting the gauge screw; 10-adjusting the set screw; 11-measuring head.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1, a turbine rotor shimmy measuring device comprises a measuring rod 1, a cylinder 3, a fixed seat sleeve 4, an adjusting spring 7 and a measuring meter 8; one end of the measuring rod 1 is provided with a measuring head 11, the measuring head 11 is made of wear-resistant insulating composite materials, can prevent a steam turbine rotor from being damaged by abrasion and can prevent the shaft of the insulating rotor from being subjected to electric corrosion, and the other end of the measuring rod is connected with a measuring meter 8; the measuring rod 1 is arranged inside the cylinder 3 and is connected with the cylinder 3 in a sliding way; the cylinder 3 is arranged in the fixed seat sleeve 4 and is movably connected with the fixed seat sleeve 4; the fixed seat sleeve 4 can be firmly screwed on the bearing cover; the adjusting spring 7 is arranged between the cylinder 3 and the fixed seat sleeve 4, and one end of the spring is fixedly connected with the fixed seat sleeve 4.
Preferably, the inner surface of the cylinder 3 is provided with a step, and a sliding spring 6 is arranged at the step; a plurality of sliding bearings 2 are arranged between the cylinder 3 and the measuring rod 1, the outer surfaces of the sliding bearings 2 are fixedly connected with the inner surface of the cylinder 3, the inner surfaces of the sliding bearings 2 are slidably connected with the measuring rod 1, and the sliding rods can slide in a certain range; the sliding bearing 2 includes an L-shaped sliding bearing 201, and the L-shaped sliding bearing 201 is disposed at one end of the large inner diameter of the cylinder 3.
Preferably, the sliding bearing 2 is made of brass, and has a precise clearance fit with the measuring rod 1.
Preferably, a boss is arranged on the outer surface of the cylinder 3; the adjustable barrel is characterized by further comprising an adjusting spring 7, a step through hole is formed in the fixed seat sleeve 4, one end of the adjusting spring 7 is fixedly connected with the step, the other end of the adjusting spring is attached to one side of a boss on the barrel body 3, and the boss can compress the adjusting spring 7; the adjusting spring 7 can ensure that the shaft center of the measuring rod 1 and the shaft center of the cylinder 3 are always in the same horizontal position; an adjusting sleeve 5 is arranged on the other side of the boss, and the adjusting sleeve 5 is arranged between the cylinder body 3 and the fixed seat sleeve 4; the adjusting sleeve 5 is connected with the cylinder 3 and the fixed seat sleeve 4 in a sliding way.
Preferably, one end of the adjusting sleeve 5 is provided with a threaded hole for passing through a meter adjusting screw 9; the outer surface of the fixed seat sleeve 4 is provided with a through hole through which a sleeve adjusting screw 10 passes.
A method for measuring the shimmy of a steam turbine rotor comprises the following steps:
s1: the fixed seat sleeve 4 is screwed and installed on the bearing cover;
s2: the measuring head 11 is propped against the steam turbine rotor, and the shimmy degree of the rotor can be transmitted to the measuring rod 1 through the measuring head 11 and is displayed on the measuring meter 8;
s3: tightening the meter adjusting screw 9 to fix the position of the measuring meter 8 relative to the adjusting sleeve 5;
s4: adjusting the position of the adjusting sleeve 5 to enable the measuring meter 8 to tightly prop against the measuring rod 1, and pressing the adjusting sleeve screw 10 to enable the adjusting sleeve screw 10 to press the adjusting sleeve 5;
s5: starting the steam turbine, starting measurement, and recording data of a measuring meter 8;
s6: after the measurement is finished, the sleeve adjusting screw 10 is loosened, the barrel 3 and all parts inside the barrel exit from the fixed seat sleeve 4 under the action of the adjusting spring 7, and therefore the purpose that the measuring head 11 is separated from the steam turbine rotor is achieved.
Claims (5)
1. The utility model provides a turbine rotor shimmy measuring device which characterized in that: comprises a measuring rod (1), a cylinder body (3), a fixed seat cover (4), an adjusting spring (7) and a measuring meter (8); wherein:
one end of the measuring rod (1) is provided with a measuring head (11), and the other end of the measuring rod is connected with a measuring meter (8); the measuring rod (1) is arranged inside the cylinder body (3) and is connected with the cylinder body (3) in a sliding manner; the cylinder (3) is arranged in the fixed seat sleeve (4) and is movably connected with the fixed seat sleeve (4); the adjusting spring (7) is arranged between the cylinder body (3) and the fixed seat sleeve (4), and one end of the spring is fixedly connected with the fixed seat sleeve (4).
2. The turbine rotor shimmy measuring device of claim 1, wherein: the inner surface of the cylinder body (3) is provided with steps, and the steps are provided with sliding springs (6); a plurality of sliding bearings (2) are arranged between the cylinder body (3) and the measuring rod (1), the outer surfaces of the sliding bearings (2) are fixedly connected with the inner surface of the cylinder body (3), and the inner surfaces of the sliding bearings (2) are slidably connected with the measuring rod (1); the sliding bearing (2) comprises an L-shaped sliding bearing (201), and the L-shaped sliding bearing (201) is arranged at one end of the large inner diameter of the cylinder body (3).
3. The turbine rotor shimmy measuring device of claim 1, wherein: a boss is arranged on the outer surface of the cylinder body (3); the adjustable barrel is characterized by further comprising an adjusting spring (7), a step through hole is formed in the fixed seat sleeve (4), one end of the adjusting spring (7) is fixedly connected with the step, and the other end of the adjusting spring is attached to one side of the boss on the barrel body (3); an adjusting sleeve (5) is arranged on the other side of the boss, and the adjusting sleeve (5) is arranged between the cylinder body (3) and the fixed seat sleeve (4); the adjusting sleeve (5) is connected with the cylinder body (3) and the fixed seat sleeve (4) in a sliding manner.
4. A turbine rotor shimmy measuring apparatus according to claim 3, wherein: one end of the adjusting sleeve (5) is provided with a threaded hole for penetrating through a meter adjusting screw (9); the outer surface of the fixed seat cover (4) is provided with a through hole through which a set screw (10) passes.
5. The method of measuring the shimmy of a turbine rotor according to any of claims 1 to 4, wherein: the method comprises the following steps:
s1: the fixed seat sleeve (4) is screwed and installed on the bearing cover;
s2: the measuring head (11) is propped against the turbine rotor, and the shimmy degree of the rotor can be transmitted to the measuring rod (1) through the measuring head (11) and is displayed on the measuring meter (8);
s3: tightening a meter adjusting screw (9) to fix the position of the measuring meter (8) relative to the adjusting sleeve (5);
s4: adjusting the position of the adjusting sleeve (5), enabling the measuring meter (8) to tightly prop against the measuring rod (1), and pressing the adjusting sleeve screw (10) to enable the adjusting sleeve screw (10) to press the adjusting sleeve (5);
s5: starting the steam turbine, starting measurement, and recording data of a measuring meter (8);
s6: after the measurement is finished, the sleeve adjusting screw (10) is loosened, the barrel (3) and all parts inside the barrel are withdrawn from the fixed seat sleeve (4) under the action of the adjusting spring (7), and therefore the purpose that the measuring head (11) is separated from the steam turbine rotor is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010225880.8A CN111337115A (en) | 2020-03-26 | 2020-03-26 | Turbine rotor shimmy measuring device and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010225880.8A CN111337115A (en) | 2020-03-26 | 2020-03-26 | Turbine rotor shimmy measuring device and measuring method |
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| Publication Number | Publication Date |
|---|---|
| CN111337115A true CN111337115A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010225880.8A Pending CN111337115A (en) | 2020-03-26 | 2020-03-26 | Turbine rotor shimmy measuring device and measuring method |
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| CN (1) | CN111337115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024068097A1 (en) * | 2022-09-28 | 2024-04-04 | Andritz Ag | Device and method for detecting wear in a component |
-
2020
- 2020-03-26 CN CN202010225880.8A patent/CN111337115A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024068097A1 (en) * | 2022-09-28 | 2024-04-04 | Andritz Ag | Device and method for detecting wear in a component |
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