CN111044136A

CN111044136A - Steam turbine rotating shaft amplitude detection machine capable of adjusting amplitude recording proportion

Info

Publication number: CN111044136A
Application number: CN202010028001.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Sanmenmeg Measuring Instrument Co Ltd
Current assignee: Sanmenmeg Measuring Instrument Co Ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-04-21

Abstract

The invention discloses a steam turbine rotating shaft amplitude detector capable of adjusting amplitude recording proportion, which comprises a machine body, wherein a detection cavity with an upward opening and a backward opening is arranged on the upper end surface of the machine body, a recording device is arranged in the machine body and comprises two recording cavities which are annularly arrayed in the lower wall and the right wall of the detection cavity and have ninety degrees intervals, the openings of the two recording cavities are forward, a push rod is arranged between the recording cavities and the detection cavity in a penetrating and sliding manner, an adjusting device is arranged on the machine body, and a paper rolling device is arranged in the side wall of the recording cavity. And data can be conveniently recorded according to the same specification.

Description

Steam turbine rotating shaft amplitude detection machine capable of adjusting amplitude recording proportion

Technical Field

The invention relates to the technical field of steam turbines, in particular to a steam turbine rotating shaft amplitude detector capable of adjusting an amplitude recording proportion.

Background

The steam turbine is a rotary steam power device, high-temperature high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and does work outwards, the steam turbine is widely applied to industrial power equipment, but a crankshaft in the steam turbine is in a rotating state for a long time when the steam turbine is used, so that the crankshaft and a crankshaft fixing piece are easily worn and generate gaps, crankshaft vibration is easily generated when the gaps are large, the abrasion speed between the crankshaft and the fixing piece is accelerated, therefore, the gaps between the crankshaft and the fixing piece need to be controlled in real time, the phenomenon that the crankshaft is worn and damaged due to large vibration is avoided, the current detection is mainly realized by a vibration sensor, and the amplitude frequency and the like cannot be visually displayed. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows:

when the steam turbine is used, a gap between a machine shaft and a fixing piece needs to be controlled in real time, the abrasion and damage of equipment caused by large vibration of the machine shaft are avoided, the detection is mainly carried out by a vibration sensor at present, and the amplitude frequency and the like cannot be visually displayed.

In order to solve the problems, the present embodiment designs a steam turbine rotating shaft amplitude detection machine capable of adjusting an amplitude recording ratio, which comprises a machine body, wherein the upper end surface of the machine body is provided with a detection cavity with an upward opening and a backward opening, a recording device is arranged in the machine body, the recording device comprises two recording cavities which are annularly arrayed in the lower wall and the right wall of the detection cavity and have ninety-degree intervals and forward openings, a support rod is arranged between the recording cavity and the detection cavity in a penetrating and slidable manner, a fixed shaft is fixedly arranged on the rear wall of the recording cavity, a turnover rod is rotatably arranged on the fixed shaft, an adjusting cavity is arranged in the turnover rod and on the left side or the lower side of the fixed shaft, an adjusting block is slidably arranged in the adjusting cavity, and a second spring is fixedly connected between one end of the adjusting block, which is close to the fixed shaft, and the inner wall of the adjusting cavity, the front wall of the adjusting cavity is communicated with a communicating port with a forward opening, the communicating port is internally provided with a slidable recording pen with a front end extending to the outside, the rear end of the recording pen is fixedly connected with the front end face of the adjusting block, the machine body is provided with an adjusting device, the adjusting device comprises a toothed groove communicated with and arranged on the side wall of the adjusting cavity, one side end face of the adjusting block close to the toothed groove is provided with a first abutting rod cavity with an opening facing the toothed groove, a first abutting rod with one end extending to the inside of the toothed groove is slidably arranged in the first abutting rod cavity, a third spring is fixedly connected between the other end of the first abutting rod and the inner wall of the first abutting rod cavity, a paper rolling device is arranged in the side wall of the recording cavity, the paper rolling device comprises a first paper rolling cavity arranged in the inner wall of one side of the recording cavity close to the adjusting block, and a first rotating shaft parallel to the abutting rod on the same side is rotatably, be equipped with the recording paper on the first axis of rotation, first scroll intracavity wall intercommunication is equipped with the torsional spring chamber, first axis of rotation one end extends to torsional spring intracavity and fixed rotary table that is equipped with, fixed rotary table with fixedly connected with torsion spring between the torsional spring intracavity wall. Preferably, the recording device comprises a roller groove arranged at one end of the detection cavity, a roller is rotatably arranged between the front wall and the rear wall of the roller groove, a first slider cavity is arranged in the wall between the detection cavity and the recording cavity, a first slider fixedly connected to the first slider of the support rod is slidably arranged in the first slider cavity, a first spring is fixedly connected between the first slider and the inner wall of the first slider cavity, a connecting groove with a forward opening is formed in one end of the support rod in the recording cavity, a limiting groove is formed in the connecting groove and runs through the right side or the upper side of the fixing shaft, and a rear end of the limiting rod slidably arranged in the limiting groove is fixedly connected to the limiting rod on the rear wall of the connecting groove.

Preferably, the adjusting device comprises a wire groove arranged in the fixed shaft, a pull rod cavity with a forward opening is formed in the front end face of the machine body, a pull rod with a front end extending to the outside is arranged in the pull rod cavity in a front-back sliding mode, a first pull ring is fixedly arranged at the front end of the pull rod, a second slider cavity is arranged in the pull rod, a tooth-shaped groove is arranged in the second slider cavity in a front-back sliding mode, the rear end of the tooth-shaped groove is close to one end of the fixed shaft, a second pull wire penetrates through the wire groove and the pull rod through fixedly connected with the adjusting block between the end of the fixed shaft, a first pull wire with a front end extending to the outside is fixedly arranged on the front end face of the second slider, and a second pull ring is fixedly arranged.

Preferably, the rear end face of the first abutting rod is provided with an abutting groove with a backward opening, the rear wall of the first abutting rod cavity is communicated with a second abutting rod cavity with a backward opening, a second abutting rod is arranged in the second abutting rod cavity in a front-back sliding manner, the front end of the second abutting rod can extend into the abutting groove, the rear end of the second abutting rod extends into the recording cavity, the rear wall of the recording cavity is communicated with a sliding rod cavity, a sliding rod is arranged in the sliding rod cavity in a front-back sliding manner, a fourth spring is fixedly connected between the rear end of the sliding rod and the inner wall of the sliding rod cavity, the front end of the sliding rod extends into the recording cavity and is fixedly provided with an abutting plate, and the front end face of the abutting plate abuts against the rear end of the second abutting rod.

Preferably, the paper rolling device comprises a second paper rolling cavity arranged in the inner wall of one side of the recording cavity far away from the regulating block, a second rotating shaft parallel to the supporting rod at the same side is rotatably arranged between the inner walls of the second paper rolling cavity, one end of the recording paper is wound on the second rotating shaft, a first gear cavity is arranged in one side of the inner wall of the second paper rolling cavity close to the end face of the machine body, one end of the second rotating shaft extends into the first gear cavity and is fixedly provided with a first helical gear, a second gear cavity is arranged in the right wall of the first gear cavity below and is arranged right below the first gear cavity above, a third rotating shaft penetrates between the first gear cavity and the second gear cavity and is rotatably arranged, and a second helical gear meshed with the first helical gear is fixedly arranged at one end of the third rotating shaft in the first gear cavity, and one end of the third rotating shaft, which is positioned in the second gear cavity, is fixedly provided with a third helical gear and a fourth helical gear which are meshed with each other, a motor is fixedly arranged in the upper wall of the second paper roll cavity below the third rotating shaft, and the upper end of the second rotating shaft below the third rotating shaft is in power connection with the motor.

The invention has the beneficial effects that: the invention can accurately detect and record the amplitude of the rotating shaft of the steam turbine when the rotating shaft of the steam turbine rotates, prevent the serious consequence caused by the damage of the steam turbine due to the overlarge amplitude of the rotating shaft of the steam turbine, is convenient for adjusting the rotating shaft of the steam turbine to prolong the service life, can adjust the proportion of the amplitude record of the paper surface, can effectively display the proper proportion when the amplitude is too small or too large, and is convenient for recording data with the same specification.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic diagram of the overall structure of a turbine rotor shaft amplitude detector with adjustable amplitude recording ratio according to the present invention;

FIG. 2 is a sectional view taken in the direction "A-A" of FIG. 1;

FIG. 3 is an enlarged schematic view of "B" of FIG. 1;

fig. 4 is a sectional view taken along the direction "C-C" of fig. 3.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a steam turbine rotating shaft amplitude detector capable of adjusting an amplitude recording proportion, which is mainly applied to rotating shaft amplitude detection of a steam turbine to avoid damage of the steam turbine, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to a steam turbine rotating shaft amplitude detector capable of adjusting amplitude recording proportion, which comprises a machine body 11, wherein the upper end surface of the machine body 11 is provided with a detection cavity 12 with an upward opening and a backward opening, a recording device 101 is arranged in the machine body 11, the recording device 101 comprises two recording cavities 13 which are annularly arrayed in the lower wall and the right wall of the detection cavity 12 and have ninety degrees intervals and forward openings, a resisting rod 14 penetrates through and is slidably arranged between the recording cavities 13 and the detection cavity 12, the rear wall of the recording cavity 13 is fixedly provided with a fixed shaft 20, the fixed shaft 20 is rotatably provided with a turnover rod 21, the turnover rod 21 is internally provided with an adjusting cavity 63 at the left side or the lower side of the fixed shaft 20, an adjusting block 22 is slidably arranged in the adjusting cavity 63, and a second spring 24 is fixedly connected between one end of the adjusting block 22, which is close to the fixed shaft 20, and the inner wall of the adjusting, the front wall of the adjusting cavity 63 is communicated with a communicating port 23 with a forward opening, a recording pen 65 with a front end extending to the outside is slidably arranged in the communicating port 23, the rear end of the recording pen 65 is fixedly connected to the front end surface of the adjusting block 22, an adjusting device 102 is arranged on the machine body 11, the adjusting device 102 comprises a toothed groove 28 communicated with and arranged on the side wall of the adjusting cavity 63, a first rod supporting cavity 29 with an opening facing the toothed groove 28 is arranged on the end surface of one side of the adjusting block 22 close to the toothed groove 28, a first supporting rod 30 with one end extending to the inside of the toothed groove 28 is slidably arranged in the first supporting rod cavity 29, a third spring 31 is fixedly connected between the other end of the first supporting rod 30 and the inner wall of the first supporting rod cavity 29, a paper rolling device 103 is arranged in the side wall of the recording cavity 13 close to the first paper rolling cavity 46 in the inner wall of one side of the adjusting block 22, rotatable be equipped with between the first scroll chamber 46 inner wall with the homonymy support the parallel first pivot 47 of pole 14, be equipped with recording paper 48 on the first pivot 47, first scroll chamber 46 inner wall intercommunication is equipped with torsional spring chamber 49, first pivot 47 one end extends to just fix being equipped with fixed rotary table 50 in the torsional spring chamber 49, fixed rotary table 50 with fixedly connected with torsion spring 51 between the torsional spring chamber 49 inner wall.

Advantageously, as will be explained in detail below, the recording device 101 includes a roller slot 15 provided at one end of the resisting rod 14 in the detection chamber 12, a roller 16 is rotatably arranged between the front wall and the rear wall of the roller groove 15, a first slide block cavity 17 is arranged in the wall between the detection cavity 12 and the recording cavity 13, a first sliding block 18 fixedly connected with the resisting rod 14 is slidably arranged in the first sliding block cavity 17, a first spring 19 is fixedly connected between the first slide block 18 and the inner wall of the first slide block cavity 17, one end of the abutting rod 14 in the recording cavity 13 is provided with a connecting groove 25 with a forward opening, one end of the turning rod 21 on the right side or the upper side of the fixed shaft 20 extends into the connecting groove 25 and is provided with a limiting groove 26 which is through in the front and back, a limiting rod 27 with the rear end fixedly connected with the rear wall of the connecting groove 25 is slidably arranged in the limiting groove 26.

Advantageously, as will be described in detail below, the adjusting device 102 includes a wire casing 33 disposed in the fixed shaft 20, a pull rod cavity 34 with a forward opening is disposed on the front end surface of the machine body 11, a pull rod 35 with a front end extending outward is disposed in the pull rod cavity 34 in a forward-backward sliding manner, a first pull ring 36 is fixedly disposed on the front end of the pull rod 35, a second slider cavity 37 is disposed in the pull rod 35, a toothed groove 28 is disposed in the second slider cavity 37 in a forward-backward sliding manner, a second pull wire 32 penetrating through the wire casing 33 and the pull rod 35 is fixedly connected between the rear end of the toothed groove 28 and an end of the adjusting block 22 close to the fixed shaft 20, a first pull wire 39 with a front end extending outward forward is fixedly disposed on the front end surface of the second slider 38, and a second pull ring 40 is fixedly disposed on the front end of the first pull wire 39.

Beneficially, the rear end face of the first abutting rod 30 is provided with an abutting groove 41 with a backward opening, the rear wall of the first abutting rod cavity 29 is communicated with a second abutting rod cavity 42 with a backward opening, a second abutting rod 43 is arranged in the second abutting rod cavity 42 in a front-back sliding manner, the front end of the second abutting rod 43 can extend into the abutting groove 41, the rear end of the second abutting rod 43 extends into the recording cavity 13, the rear wall of the recording cavity 13 is communicated with a sliding rod cavity 64, a sliding rod 44 is arranged in the sliding rod cavity 64 in a front-back sliding manner, a fourth spring 45 is fixedly connected between the rear end of the sliding rod 44 and the inner wall of the sliding rod cavity 64, the front end of the sliding rod 44 extends into the recording cavity 13 and is fixedly provided with an abutting plate 66, and the front end face of the abutting plate 66 abuts against the rear end of the second abutting rod 43.

Beneficially, a detailed description is given below for the paper rolling device 103, where the paper rolling device 103 includes a second paper roll cavity 52 disposed in an inner wall of the recording cavity 13 far from the adjusting block 22, a second rotating shaft 53 parallel to the abutting rod 14 on the same side is rotatably disposed between inner walls of the second paper roll cavity 52, one end of the recording paper 48 is wound on the second rotating shaft 53, a first gear cavity 55 is disposed in an inner wall of the second paper roll cavity 52 and on a side close to an end surface of the machine body 11, one end of the second rotating shaft 53 extends into the first gear cavity 55 and is fixedly provided with a first helical gear 56, a second gear cavity 59 is disposed in a right wall of the first gear cavity 55 and right below the first gear cavity 55, a third rotating shaft 57 penetrates and is rotatably disposed between the first gear cavity 55 and the second gear cavity 59, and one end of the third rotating shaft 57 in the first gear cavity 55 is fixedly provided with a meshing engagement part engaged with the first helical gear 56 The third helical gear 58, one end of the third rotating shaft 57 in the second gear cavity 59 is fixedly provided with a third helical gear 60 and a fourth helical gear 61 which are engaged with each other, the upper wall of the second paper roll cavity 52 below is fixedly provided with a motor 62, and the upper end of the second rotating shaft 53 below is connected with the motor 62 by power.

The following will describe in detail the use steps of the amplitude detection machine of the steam turbine rotating shaft with adjustable amplitude recording ratio with reference to fig. 1 to 4:

at the beginning, the first slide block 18 is at the limit position close to one side of the detection cavity 12, the adjusting block 22 is at the limit position far away from one side of the fixed shaft 20, the pull rod 35 is at the rear limit position, the second slide block 38 is at the rear limit position, one end of the first abutting rod 30 extends into the tooth-shaped groove 28 to be clamped, the front end of the second abutting rod cavity 42 extends into the abutting groove 41, the slide rod 44 and the abutting plate 66 are at the front limit position, the abutting plate 66 abuts against the second abutting rod 43, and the first spring 19, the second spring 24, the third spring 31 and the fourth spring 45 are all in the compressed state.

When the device works, one end of a rotating shaft of the steam turbine is arranged in the detection cavity 12 and the rotating shaft of the roller 16 is abutted, when the rotating shaft rotates, if the rotating shaft has amplitude, the rotating shaft can push the abutting rod 14 to slide when rotating, under the action of the first sliding block 18 and the first spring 19, the roller 16 is always abutted against the circumferential end face of the rotating shaft, when the abutting rod 14 slides, one end of the overturning rod 21 in the connecting groove 25 is driven to overturn, the motor 62 is started, the motor 62 drives the second rotating shaft 53 on the lower side to rotate, the second rotating shaft 53 drives the first helical gear 56 on the same side to rotate, the second rotating shaft 53 on the upper side is driven to rotate through gear engagement, the second rotating shaft 53 winds the recording paper 48, and then when the other end of the connecting groove 25 reversely overturns, the amplitude is continuously recorded on the surface of the.

If the amplitude recording display ratio is too large, when the amplitude recording ratio needs to be adjusted, the first pull ring 36 is held and the second pull ring 40 is hooked by fingers, the second pull ring 40 is pulled forward first to make the first pull wire 39 pull the second slider 38 forward to the front limit position, then the second slider 38 pulls the first abutting rod 30 downward through the second pull wire 32 to make the first abutting rod 30 break away from the tooth-shaped groove 28, at this time, the second abutting rod 43 is pushed back into the second abutting rod cavity 42, the first pull ring 36 is pulled forward continuously, then the adjusting block 22 is pulled by the second pull wire 32 to slide towards one side of the fixed shaft 20, when the position is adjusted to the required position, the second pull ring 40 is released, then the first abutting rod 30 extends into the tooth-shaped groove 28 again under the action of the third spring 31, at the same time, the slide rod 44 slides forward under the action of the fourth spring 45 to make the abutting plate 66 push the second abutting rod 43, and then the second abutting rod 43 extends into the abutting groove 41, the recording deviation caused by the fact that the adjusting block 22 is in a slidable state due to the fact that the first abutting rod 30 slides downwards when the overturning rod 21 overturns and swings is prevented.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a steam turbine pivot amplitude of adjustable amplitude record proportion detects machine which characterized in that: the recording device comprises two recording cavities which are arranged in the lower wall and the right wall of the detection cavity at intervals of ninety degrees and have forward openings, a support rod is arranged between the recording cavities and the detection cavity in a penetrating and slidable manner, a fixed shaft is fixedly arranged on the rear wall of the recording cavity, a turnover rod is rotatably arranged on the fixed shaft, an adjusting cavity is arranged in the turnover rod and on the left side or the lower side of the fixed shaft, an adjusting block is slidably arranged in the adjusting cavity, a second spring is fixedly connected between one end of the adjusting block close to the fixed shaft and the inner wall of the adjusting cavity, a communication port with a forward opening is communicated with the front wall of the adjusting cavity, and a recording pen with a front end extending out is slidably arranged in the communication port, the rear end of the recording pen is fixedly connected with the front end face of the adjusting block, the machine body is provided with an adjusting device, the adjusting device comprises a tooth-shaped groove communicated with and arranged on the side wall of the adjusting cavity, one side end face of the adjusting block close to the tooth-shaped groove is provided with a first supporting rod cavity with an opening facing the tooth-shaped groove, a first supporting rod with one end capable of extending into the tooth-shaped groove is slidably arranged in the first supporting rod cavity, a third spring is fixedly connected between the other end of the first supporting rod and the inner wall of the first supporting rod cavity, a paper rolling device is arranged in the side wall of the recording cavity and comprises a first paper rolling cavity arranged in the inner wall of the recording cavity close to one side of the adjusting block, a first rotating shaft parallel to the supporting rod at the same side is rotatably arranged between the inner walls of the first paper rolling cavity, recording paper is arranged on the first rotating shaft, and the inner wall, first pivot one end extends to torsional spring intracavity and fixed carousel that is equipped with, fixed carousel with fixedly connected with torsion spring between the torsional spring intracavity wall.

2. The amplitude detector of steam turbine shaft with adjustable amplitude recording ratio as claimed in claim 1, wherein: the recording device comprises a roller groove arranged at one end of a detection cavity, wherein a roller is rotatably arranged between the front wall and the rear wall of the roller groove, a first slider cavity is arranged in the wall between the detection cavity and the recording cavity, a first slider fixedly connected with the support rod is slidably arranged in the first slider cavity, a first spring is fixedly connected between the first slider and the inner wall of the first slider cavity, a connecting groove with a forward opening is formed in one end of the support rod, which is positioned in the recording cavity, a limiting groove is formed in the connecting groove and runs through the connecting groove in the front and the rear direction, and a limiting rod with a rear end fixedly connected with the rear wall of the connecting groove is slidably arranged in the limiting groove.

3. The amplitude detector of steam turbine shaft with adjustable amplitude recording ratio as claimed in claim 1, wherein: adjusting device is including locating wire casing in the fixed axle, the terminal surface is equipped with the forward pull rod chamber of opening before the organism, the gliding pull rod that is equipped with the front end and extends to outer in the pull rod intracavity can be around, the fixed first pull ring that is equipped with of pull rod front end, be equipped with second slider chamber in the pull rod, gliding flute profile groove that is equipped with around the second slider intracavity, flute profile groove rear end with the regulating block is close to fixedly connected with runs through between the one end of fixed axle through the wire casing with the second of pull rod is acted as go-between, the fixed first pull wire that extends to outer front end that is equipped with of terminal surface before the second slider, first pull wire front end is fixed and is equipped with the second pull ring.

4. The amplitude detector of steam turbine shaft with adjustable amplitude recording ratio as claimed in claim 1, wherein: the rear end face of the first abutting rod is provided with an abutting groove with a backward opening, the rear wall of the first abutting rod cavity is communicated with a second abutting rod cavity with a backward opening, a second abutting rod is arranged in the second abutting rod cavity in a front-back sliding mode, the front end of the second abutting rod can extend into the abutting groove, the rear end of the second abutting rod extends into the recording cavity, the rear wall of the recording cavity is communicated with a sliding rod cavity, a sliding rod is arranged in the sliding rod cavity in a front-back sliding mode, a fourth spring is fixedly connected between the rear end of the sliding rod and the inner wall of the sliding rod cavity, the front end of the sliding rod extends into the recording cavity and is fixedly provided with an abutting plate, and the front end face of the abutting plate abuts against the rear end of the second abutting rod.

5. The amplitude detector of steam turbine shaft with adjustable amplitude recording ratio as claimed in claim 1, wherein: stock form device is including locating record chamber keeps away from the second scroll chamber in regulating block one side inner wall, rotatable being equipped with between the second scroll intracavity wall with the homonymy support the parallel second pivot of pole, the one end of recording paper convolute in the second pivot, just in being close to in the second scroll intracavity wall one side of organism terminal surface is equipped with first gear chamber, second pivot one end extends to first gear intracavity and fixed being equipped with first helical gear, below just in the top in the first gear chamber right wall be equipped with the second gear chamber under the first gear chamber, first gear chamber with run through and rotatable third pivot that is equipped with between the second gear chamber, the third pivot is in the one end in the first gear intracavity is fixed be equipped with mesh in the second helical gear of first helical gear, the third pivot is in one end in the second gear intracavity is fixed be equipped with intermeshing's third helical gear and fourth helical gear And a motor is fixedly arranged in the upper wall of the second paper roll cavity below the helical gear, and the upper end of the second rotating shaft below the helical gear is in power connection with the motor.