CN218524350U

CN218524350U - Thrust bearing off-line overhauls device in steam turbine

Info

Publication number: CN218524350U
Application number: CN202221322439.2U
Authority: CN
Inventors: 张绍华
Original assignee: Tianjin Huanong Yangliuqing Thermoelectric Co Ltd
Current assignee: Tianjin Huanong Yangliuqing Thermoelectric Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-02-24
Anticipated expiration: 2032-05-30

Abstract

The utility model provides a thrust bearing off-line overhauls device in steam turbine, including test section, isolated part, removal part and basic part, test section, removal part and isolated part all are connected with basic part, and test section sets up and is examined the piece, is used for examining the piece and overhauls, and isolated part encircles the test section and sets up, is used for the protection to be examined the piece and avoids the natural environment to influence, and removal part is used for changing the spatial position who overhauls the device, through the utility model discloses can reduce the influence that the natural environment produced when overhauing thrust bearing off-line, improve the efficiency of overhauing and the accuracy of testing result, practice thrift the repair time, alleviate the use of manpower, simultaneously, noise and vibration that effectual reducing mechanism during operation produced.

Description

Thrust bearing off-line overhauls device in steam turbine

Technical Field

The utility model relates to a steam turbine field particularly, relates to a thrust bearing off-line overhauls device in steam turbine.

Background

The steam turbine is important power equipment in industrial production, and thrust bearing is the important component part of steam turbine equally, and thrust bearing mainly used supports the steam turbine rotor, guarantees that the steam turbine reliably operates steadily, and at present, the steam turbine rotor is at high rotational speed, heavy load operation in-process, and thrust bearing needs to bear very big axial force, and thrust bearing need shut down when the high phenomenon of the local tile temperature of thrust tile appears in the use in thrust bearing, overhauls and grinds thrust bearing, so thrust bearing's maintenance quality and grinding effect directly influence the safety and stability operating performance of steam turbine.

However, when the maintenance device is used for maintaining the thrust bearing after the steam turbine stops working in the prior art, the thrust bearing is generally directly exposed in the natural environment, so that the maintenance result of the thrust bearing is easily influenced by the surrounding environment, further the maintenance result is inaccurate, the maintenance device is large in size and is not convenient to move, and therefore when the thrust bearing of a plurality of steam turbines is maintained, the thrust bearing needs to be transported by spending a large amount of time, further the maintenance efficiency is greatly reduced, and the operation of the steam turbine is delayed.

In patent CN107630724A, a thrust bearing off-line maintenance device in steam turbine has been proposed, the device relates to the bearing box, set up detection device in the bearing box, the influence that natural environment detected thrust bearing has been reduced to a certain extent, but the bearing box is relatively fixed, make this detection device can not effectual removal, in patent CN209783906U, thrust bearing off-line maintenance device in the steam turbine that proposes, the device sets up maintenance device in the bearing box equally, but can make the rotation of the inside certain extent of maintenance device through twisting screw and rotation, the measuring scope has been improved, save maintenance time, but thrust bearing's change is loaded down with trivial details, influence detection device's detection efficiency easily.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a thrust bearing off-line overhauls device in steam turbine to natural environment influences thrust bearing when solving the maintenance that exists among the prior art, thereby leads to overhauing the result inaccurate, and overhauls the device and is difficult to remove and leads to overhauing the technical problem of inefficiency.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model relates to a thrust bearing off-line overhauls device in steam turbine, including testing section, isolated segment, moving part and basic unit, testing section, moving part and isolated segment all are connected with basic unit, and testing section sets up and is examined the piece for to examining the piece and overhaul, isolated segment encircles the testing section setting, is used for the protection to be examined the piece and avoids the natural environment influence, and moving part is used for changing the spatial position who overhauls the device.

Furthermore, the isolation part comprises an isolation block and a supporting part, a cavity is formed in the isolation block, one end of the supporting part is connected with the base part, the other end of the supporting part is connected with the isolation block, and the supporting part is used for controlling the isolation block to be opened and closed.

Further, the base part comprises a base and a limiting block, the limiting block is arranged on the base and used for limiting the position of the moving part and/or the supporting part on the base, the bottom of the base is connected with the horizontal plane, or the base is connected with the horizontal plane through the moving part, and the top of the base is connected with the detecting part.

Furthermore, the limiting block comprises a first groove and a second groove, the first groove is connected with the moving part, the second groove is connected with the supporting part, the first groove is arranged at the bottom of the base, and the second groove is arranged at the top of the base.

Further, the moving part is a moving part, and the moving part is arranged in a first groove through a base and used for controlling the whole movement of the overhauling device in the space.

Further, the detection part comprises a steam turbine rotor, one end of the steam turbine rotor is connected with the top of the base, and the other end of the steam turbine rotor is connected with the detected block.

Furthermore, the detected block is a thrust bearing, the thrust bearing is connected with a rotating shaft of the steam turbine rotor, and the thrust bearing is arranged in the inner cavity of the isolation block.

Further, the moving part comprises a control motor, a lead screw, a sliding sleeve, a supporting block and a moving roller, the control motor is arranged at the top of the base, one end of the lead screw is connected with one end, close to the base, of the control motor, the other end of the lead screw is arranged in a groove, the outer wall of the lead screw is connected with the sliding sleeve, the outer wall of the sliding sleeve is connected with the supporting block, and the inner wall of the supporting block is connected with the moving roller.

Further, the supporting part includes No. two control motor, swing arm, gear, backup pad and rack, and No. two control motor's one end is connected with the concave surface of No. two recesses, and No. two control motor's the other end is connected with the swing arm, and the swing arm is kept away from No. two control motor's one end outer wall and is connected with the gear, and the teeth of a cogwheel and the rack of gear are connected.

Furthermore, the bottom surface of base sets up the shock attenuation strip for noise and vibration that this device during operation produced are reduced.

Compared with the prior art, a thrust bearing off-line overhauls device in steam turbine, following beneficial effect has:

the influence that produces when can reducing natural environment overhauls the thrust bearing off-line improves the efficiency of overhauing and the accuracy of testing result, practices thrift the repair time, alleviates the use of manpower, simultaneously, effectual reduction device during operation, the noise and the vibration of production.

Drawings

Some of the figures that make up the present invention are intended to provide a further understanding of the invention, and the illustrative embodiments and descriptions thereof are intended to explain the present invention and not to constitute an undue limitation on the invention. In the drawings:

FIG. 1 is a schematic perspective view of an offline thrust bearing maintenance device;

FIG. 2 is a schematic side view of an offline thrust bearing servicing apparatus;

FIG. 3 is a schematic cross-sectional view of an offline thrust bearing servicing apparatus;

fig. 4 is an enlarged schematic view of a partial structure of the thrust bearing offline maintenance device.

Description of reference numerals: 1. a base; 2. a shock-absorbing bar; 3. a first groove; 4. a moving part; 401. a first control motor; 402. a screw rod; 403. a sliding sleeve; 404. a support block; 405. moving the roller; 5. a control panel; 6. a turbine rotor; 7. a frequency converter; 8. a thrust bearing; 9. an isolation block; 10. a second groove; 11. A support portion; 1101. controlling a motor by a second motor; 1102. rotating the rod; 1103. a gear; 1104. a support plate; 1105. A rack.

Detailed Description

The inventive concepts of the present disclosure will be described hereinafter using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. These utility concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment aims at the thrust bearing off-line maintenance device in the steam turbine, and the integral structure is composed of a rotor and a supporting base, and the same as the conventional maintenance device.

In prior art, overhaul the device and overhaul the time of back to thrust bearing at the steam turbine shutdown, thrust bearing generally directly exposes in natural environment, consequently, lead to the easy maintenance result to thrust bearing of peripheral environment to produce the influence, and then lead to overhauing the result inaccurate, and the great not convenient for of the volume of overhauing the device removes, and then make maintenance efficiency descend by a wide margin and can delay the operation of steam turbine equally, even if the external bearing box of partial maintenance device, certain guard action has been played, but overhaul device moving range is limited, make maintenance efficiency general.

In order to solve the problems in the prior art that a thrust bearing is affected by a natural environment during maintenance to cause an inaccurate maintenance result and the maintenance device is difficult to move to cause low efficiency, the embodiment provides an offline maintenance device for a thrust bearing in a steam turbine, as shown in fig. 1, the offline maintenance device for a thrust bearing comprises a detection part, an isolation part, a moving part and a base part, wherein the detection part, the moving part and the isolation part are all connected with the base part, the detection part is provided with a detected block far away from the base part and used for maintaining the detected block, the isolation part is arranged around the detection part and used for protecting the detected block from being affected by the natural environment, and the moving part is used for changing the spatial position of the maintenance device.

The isolation part is provided with the influence that natural environment produced to being examined the piece when doing benefit to solving and overhauing, can be to a certain extent reduce the influence dynamics of outside to being examined the piece, improve the accuracy of overhauing the result, simultaneously, because it is inconvenient to move when overhauing the great detection that causes of device volume, the setting of removal part can make to overhaul the device and remove conveniently, simultaneously, has saved the use of manpower.

The isolation part comprises an isolation block 9 and a supporting part 11, a cavity is formed in the isolation block 9, one end of the supporting part 11 is connected with the base part, the other end of the supporting part 11 is connected with the bottom end of the outer side of the isolation block 9, and the supporting part 11 is used for controlling the opening and closing of the isolation block 9 in the front-back horizontal direction.

The supporting part 11 plays a role in connecting the isolation block 9 with the base part, and meanwhile, the supporting part 11 can be used for controlling the back-and-forth movement of the isolation block 9, so that the isolation block 9 is opened and closed, the convenience in taking out or putting in the detected block is facilitated in the maintenance process, the detected block is protected from being influenced by the natural environment, and the working efficiency is improved.

The basic part comprises a base 1 and a limiting block, the limiting block is arranged on the base 1 and used for limiting the position of a moving part and/or a supporting part 11 on the base 1, the bottom of the base 1 is connected with the horizontal plane, or the base 1 is connected with the horizontal plane through the moving part, the top of the base 1 is connected with the detecting part, the limiting block comprises a groove 3 and a groove 10, the groove 3 is connected with the moving part, the groove 10 is connected with the supporting part 11, the groove 3 is arranged at the bottom of the base 1, the groove 3 is at least one, the groove 10 is arranged at the top of the base 1, the groove 10 is at least one, in the embodiment, the bottom is used for horizontally placing the maintenance device, one side close to the horizontal plane is the bottom, and one side far away from the horizontal plane is the top.

Preferably, the bottom surface of the base 1 is provided with at least one damping strip 2, and the damping strips 2 are used for reducing noise and vibration generated when the device works.

The basic unit is provided with and does benefit to the stability of guaranteeing to overhaul the device, improve the security of overhauing the device, play the effect of connecting each partial device simultaneously, to the isolation part, the test section with by the block etc. play support and guard action, shock attenuation strip 2 can the effectual impact that reduces 1 bases and receive, and reduce noise and vibration that this device during operation produced simultaneously, be favorable to alleviating the harm that the noise produced, the protection maintainer's of certain degree hearing.

The mobile part is mobile portion 4, and mobile portion 4 sets up recess 3 No. one through base 1 for change the holistic spatial position of maintenance device, and the holistic removal in the space of control maintenance device promptly, mobile portion 4 sets up at least one.

The arrangement of the moving part 4 is beneficial to enabling the maintenance device to be capable of moving quickly in space, and the maintenance device is moved quickly to the position near the detected block of the steam turbine to be detected to detect the steam turbine.

One end of a supporting part 11 of the isolation part is arranged in the second groove 10, the other end of the supporting part 11 is fixedly connected with the isolation block 9, the supporting part 11 is used for controlling the position of the isolation block 9 and the opening and closing of the isolation block 9, the isolation block 9 is detachably arranged, and the two states of opening and closing can be realized along with the movement of the supporting part 11.

The supporting part 11 is beneficial to realizing the forward and backward movement of the isolation block 9, is convenient for measuring different detected blocks, effectively improves the detection efficiency and increases the economy of the detection device.

As shown in fig. 2, the moving portion 4 includes a first control motor 401, a screw rod 402, a sliding sleeve 403, a supporting block 404 and a moving roller 405, the first control motor 401 is disposed on the top of the base 1, one end of the screw rod 402 is connected with one end of the first control motor 401 close to the base 1, the other end of the screw rod 402 penetrates through the base 1 and is disposed in the first groove 3 in an extending manner, the outer wall of the screw rod 402 is movably connected with the sliding sleeve 403, the outer wall of the sliding sleeve 403 is fixedly connected with the supporting block 404, the inner wall of the supporting block 404 is connected with the moving roller 405, and at least one moving roller 405 is disposed on the moving roller 405.

When this detection device initial state, before removing this detection device, through driving lead screw 402 with the help of a control motor 401 and rotate, and then make sliding sleeve 403 link supporting shoe 404 and removal gyro wheel 405 downstream, and finally leave a recess 3, this device of help with removal gyro wheel 405 can the quick travel this moment, when this detection device gets into the detection state, through reverse rotation lead screw 402 and then with the supporting shoe 404 income recess 3 in, provide a stable environment for detecting.

The inconvenient problem of detection device removal has been solved in setting up of removal portion 4, is favorable to improving the efficiency that detection device detected, and increase detection device's detection range alleviates the use of manpower, and simultaneously, the shrink function of removal portion 4 is favorable to improving the stability that detects, prevents to make this device when detecting because remove gyro wheel 405, takes place to deviate, has increased the security and the accuracy that detect.

As shown in fig. 4, the supporting portion 11 includes a second control motor 1101, a rotating rod 1102, a gear 1103, a supporting plate 1104 and a rack 1105, one end of the second control motor 1101 is fixedly connected to the concave surface of the second groove 10, the other end of the second control motor 1101 is movably connected to the rotating rod 1102, an outer wall of one end of the rotating rod 1102 far away from the second control motor 1101 is fixedly connected to the gear 1103, teeth of the gear 1103 are engaged with the rack 1105, and at least one rack 1105 is provided.

In this embodiment, the number of the racks 1105 is 2, the front end of the rack 1105 is fixedly connected with the front side surface of the second groove 10, the rear end of the rack 1105 is fixedly connected with the front side outer wall of the support plate 1104, and a certain distance is left between the two racks 1105.

This detection device is through rotatory with the help of No. two control motor 1101 drive rotary rod 1102, and rotary rod 1102 drives the rotation of gear 1103, and then gear 1103 drives rack 1105 rather than the meshing and the backup pad 1104 with rack 1105 fixed connection move in No. two recess 10 to open fast and close spacing block 9, borrow this fast to take out and change different examined the piece and detect.

Supporting part 11 be provided with do benefit to the quick opening and the closure that realize spacing block 9, increase the maintenance efficiency of this device, can also select the state that opens and shuts of spacing block 9 simultaneously in the environment of difference, in addition, realized the removal of subassembly in this device, improved the work efficiency of this device, the time of having practiced thrift.

The detection part includes turbine rotor 6,

converter

7, 6 one end of turbine rotor is connected with base 1's top, the other end is connected with the piece of being examined, be used for providing kinetic energy for detection device, turbine rotor 6's top is provided with converter 7, converter 7 is used for measuring the specific conditions of the piece of being examined under the multiple rotational speed, result for overhauing the test provides more various, turbine rotor 6 includes base and pivot, pivot one end is connected with the base top, the pivot other end is connected with the piece of being examined, turbine rotor 6 base bottom is connected with base 1's top, converter 7 sets up directly over pivot and pedestal connection end, in this embodiment, as shown in fig. 1, the top is on the vertical direction of turbine rotor 6 and base 1 junction, the direction of keeping away from base 1 is the top.

The setting of converter 7 is favorable to increasing the persuasion for the measuring result of this device, improves and detects the precision, increases detection range.

As shown in fig. 3, the detected block is a thrust bearing 8, the inner wall of the thrust bearing 8 is connected with the rotating shaft of the turbine rotor 6, the thrust bearing 8 is arranged in the inner cavity of the isolation block 9, the thrust bearing 8 comprises an upper thrust pad and a lower thrust pad, the outer walls of the upper thrust pad and the lower thrust pad of the thrust bearing 8 are both movably connected with a temperature sensor, the temperature sensor is both electrically connected with the control panel 5, the control panel 5 is arranged on the left side of the top of the base 1 and used for displaying the measurement information of the detected block in the detection device and adjusting the rotating speed.

This detection device is through the temperature with the help of thrust tile and lower thrust tile in the detection to in time transmit for control panel 5 make things convenient for the staff to obtain data fast and overhaul.

The maintenance of the thrust bearing 8 is beneficial to improving the safety of the steam turbine equipment, meanwhile, the fault rate of the equipment is beneficial to being reduced, the safety and stability operation performance of the steam turbine can be effectively improved, the isolation block 9 provides relative stability for the detection of the thrust bearing 8, the airtight space with few factors influencing the detection result is provided, the problem that the thrust bearing 8 is influenced by the surrounding environment when the detection is carried out is solved, the result is inaccurate, the detection efficiency is low is caused, and the accuracy of the detection result of the detection device is improved.

It is noted that, in this document, relational terms such as "a," an, "and" the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The utility model discloses in, to arbitrary steam turbine, can include in this embodiment thrust bearing 8 structure, and on the basis of the relevant structure and the assembled relation of the thrust bearing 8's that this embodiment provided maintenance device, maintenance device still includes the conventional component including structures such as steam turbine rotor 6, electric wire, bolt, in view of it is prior art, does not give unnecessary details here.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a thrust bearing overhauls device off-line in steam turbine, its characterized in that includes sense part, isolation part, movable part and basic unit, and sense part, movable part and isolation part all are connected with basic unit, and the sense part sets up examines the piece for examine the piece and overhaul, and isolation part encircles the sense part setting for the protection is examined the piece and is avoided the natural environment influence, and the movable part is used for changing the spatial position who overhauls the device.

2. The device for offline overhauling the thrust bearing in the steam turbine as recited in claim 1, wherein the isolation part comprises an isolation block (9) and a supporting part (11), a cavity is formed in the isolation block (9), one end of the supporting part (11) is connected with the base part, the other end of the supporting part (11) is connected with the isolation block (9), and the supporting part (11) is used for controlling the opening and closing of the isolation block (9).

3. The offline maintenance device for the thrust bearing in the steam turbine according to claim 2, wherein the base part comprises a base (1) and a limiting block, the limiting block is arranged on the base (1) and used for limiting the position of the moving part and/or the supporting part (11) on the base (1), the bottom of the base (1) is connected with a horizontal plane, or the base (1) is connected with the horizontal plane through the moving part, and the top of the base (1) is connected with the detection part.

4. The device for offline maintenance of the thrust bearing in the steam turbine according to claim 3, wherein the limiting block comprises a first groove (3) and a second groove (10), the first groove (3) is connected with the moving part, the second groove (10) is connected with the supporting part (11), the first groove (3) is arranged at the bottom of the base (1), and the second groove (10) is arranged at the top of the base (1).

5. The off-line maintenance device for the thrust bearing in the steam turbine according to claim 4, characterized in that the moving part is a moving part (4), and the moving part (4) is arranged in the first groove (3) through the base (1) and is used for controlling the whole maintenance device to move in space.

6. The device for offline maintenance of the thrust bearing in the steam turbine as claimed in claim 3, wherein the detection part comprises a steam turbine rotor (6), one end of the steam turbine rotor (6) is connected with the top of the base (1), and the other end is connected with the detected block.

7. The off-line overhaul device for the thrust bearing in the steam turbine according to claim 6, wherein the examined block is a thrust bearing (8), the thrust bearing (8) is connected with a rotating shaft of a steam turbine rotor (6), and the thrust bearing (8) is arranged in an inner cavity of the isolation block (9).

8. The offline maintenance device for the thrust bearing in the steam turbine according to claim 5, wherein the moving part (4) comprises a control motor (401), a screw rod (402), a sliding sleeve (403), a supporting block (404) and a moving roller (405), the control motor (401) is arranged at the top of the base (1), one end of the screw rod (402) is connected with one end, close to the base (1), of the control motor (401), the other end of the screw rod (402) is arranged in a groove (3), the outer wall of the screw rod (402) is connected with the sliding sleeve (403), the outer wall of the sliding sleeve (403) is connected with the supporting block (404), and the inner wall of the supporting block (404) is connected with the moving roller (405).

9. The offline maintenance device for the thrust bearing in the steam turbine is characterized in that the supporting portion (11) comprises a second control motor (1101), a rotating rod (1102), a gear (1103), a supporting plate (1104) and a rack (1105), one end of the second control motor (1101) is connected with the concave surface of the second groove (10), the other end of the second control motor (1101) is connected with the rotating rod (1102), the outer wall of one end, far away from the second control motor (1101), of the rotating rod (1102) is connected with the gear (1103), and gear teeth of the gear (1103) are connected with the rack (1105).

10. The device for offline maintenance of the thrust bearing in the steam turbine according to claim 3, wherein the bottom surface of the base (1) is provided with a damping strip (2) for reducing noise and vibration generated when the device works.