CN216504830U - Device is demolishd to lower sleeve of vertical hydraulic turbine stator - Google Patents
Device is demolishd to lower sleeve of vertical hydraulic turbine stator Download PDFInfo
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- CN216504830U CN216504830U CN202123065425.5U CN202123065425U CN216504830U CN 216504830 U CN216504830 U CN 216504830U CN 202123065425 U CN202123065425 U CN 202123065425U CN 216504830 U CN216504830 U CN 216504830U
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- lower sleeve
- transmission
- guide vane
- fixedly connected
- lead screw
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Abstract
The utility model provides a device is demolishd to sleeve under vertical hydraulic turbine stator, the hydraulic turbine includes stator and lower sleeve, and lower sleeve one end is for opening the end, and the stator stretches into the lower sleeve from the end that opens of lower sleeve, and lower sleeve other end fixedly connected with closing plate, dismounting device include two semicircle rings, and the semicircle ring cover is established on the stator, demolish the device and still include the base, be provided with the stand on the base, the stand with closing plate fixed connection has seted up the cavity in the stand, is provided with a plurality of power unit in the cavity, and the power unit drive is connected with drive mechanism, and drive mechanism is connected with at least two and is used for pushing away the ejector pin of semicircle ring. According to the dismounting device for the lower sleeve of the guide vane of the vertical water turbine, the hoop is fixed on the guide vane in the dismounting process, the hoop is pushed to move upwards by driving the ejector rod to move upwards so as to drive the guide vane to move upwards, uneven stress on the guide vane is prevented, and the phenomena of screw thread slipping and breakage of the ejector rod are avoided.
Description
Technical Field
The utility model relates to the technical field of maintenance of hydraulic generators, in particular to a device for detaching a lower sleeve of a guide vane of a vertical water turbine.
Background
In the hydroelectric generating set, the lower sleeve of the guide vane of the water turbine is positioned at the lower end part of the guide vane and in the gallery of the basic ring, the lower sleeve of the guide vane is arranged in the lower sleeve of the guide vane by connecting the closing bolt with the basic ring, the lower shaft of the guide vane is inserted into the lower shaft sleeve to rotate along with the water distributor of the water turbine, and meanwhile, the lower sleeve also plays roles of supporting a sealing copper ring, sealing the lower shaft of the guide vane and the like. When the water turbine operates in flood season, due to the fact that the sediment content is large, cavitation abrasion of a sealing copper ring of a lower end shaft of the guide vane is caused, even the situation of perforation occurs, the sealing performance is reduced, the problem of water leakage of a lower sleeve of the guide vane occurs, and at the moment, the lower sleeve of the guide vane needs to be detached to replace the sealing copper ring. The stator is at rotatory in-process, and the axle sleeve can receive the extrusion of stator lower end axle under the stator, and then transmits the extrusion force to lower sleeve, basic ring, and in the time of the use, the stator can produce weak variant down the sleeve. Meanwhile, the lower sleeve is wet and watery in the gallery of the foundation ring, and condensate water often appears on the surface of the lower sleeve, so that the joint surface of the lower sleeve and the foundation ring and the joint bolt are seriously rusted, and great difficulty is brought to the unit for checking and dismantling the lower sleeve.
The previous mode for removing the lower sleeve of the guide vane is as follows: the jackscrew is inserted into the jackscrew hole of the guide vane lower sleeve, the jackscrew is rotated by the open-end wrench, and the lower sleeve is slowly withdrawn from the sleeve hole, so that the mode is suitable for a unit which is newly installed or just overhauls the lower sleeve. The machine set running for a long time is not suitable, the conditions of top thread slipping and breakage often occur, the lower sleeve cannot be smoothly dismounted, and the overhaul period is delayed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides the device for removing the lower sleeve of the guide vane of the vertical water turbine, which avoids the phenomena of top thread fracture and thread sliding in the removing process and improves the overhauling efficiency.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a device is demolishd to vertical hydraulic turbine stator lower casing, the hydraulic turbine includes stator and lower casing, and lower casing one end is for opening the end, and the stator stretches into the lower casing from the end that opens of lower casing, and lower casing other end fixedly connected with closing plate, dismounting device include two semicircle rings, and the semicircle ring cover is established on the stator, demolish the device and still include the base, be provided with the stand on the base, the stand with closing plate fixed connection has seted up the cavity in the stand, is provided with a plurality of power unit in the cavity, and the power unit drive is connected with drive mechanism, and drive mechanism is connected with two at least and is used for the top to push away the ejector pin of semicircle ring.
As the further optimization of the device is demolishd to above-mentioned vertical turbine stator lower casing: the stand fixedly connected with flange, the closing plate passes through the jackscrew with the flange and is connected, has seted up a plurality of first jackscrew holes on the closing plate, has seted up a plurality of and first jackscrew hole matched with second jackscrew hole on the flange.
As the further optimization of the device is demolishd to above-mentioned vertical turbine stator lower casing: the upright post is fixedly connected with two lifting lugs, a screw rod is arranged on each lifting lug in a penetrating mode, and the screw rod is fixedly connected with the flange.
As the further optimization of the device is demolishd to above-mentioned vertical turbine stator lower casing: the power mechanism comprises a driving shaft which is rotatably arranged, a driving gear is arranged on the driving shaft in a matching mode, the transmission mechanism comprises a transmission gear which is meshed with the driving gear, a transmission shaft penetrates through the transmission gear, two ends of the transmission shaft extend to the outside of the upright post, and a transmission assembly which is used for controlling the ejector rod to move is arranged at the end of the transmission shaft in a matching mode.
As the further optimization of the device is demolishd to above-mentioned vertical turbine stator lower casing: the power mechanism also comprises a motor for driving the driving shaft to rotate.
As the further optimization of the device is demolishd to above-mentioned vertical turbine stator lower casing: the transmission assembly comprises a transmission bevel gear arranged at the end of a transmission shaft in a matched mode, a lead screw is arranged in the transmission case in a rotating mode, a driven bevel gear meshed with the transmission bevel gear is arranged on the lead screw in a matched mode, one end of the lead screw extends out of the transmission case, a lead screw nut is arranged on one section, located outside the transmission case, of the lead screw in a matched mode, the lead screw nut is fixedly connected with at least one ejector rod, and the ejector rod extends into the transmission case.
As the further optimization of the device is demolishd to above-mentioned vertical turbine stator lower casing: the lead screw nut is fixedly connected with a connecting plate, and the ejector rod is fixedly connected with the connecting plate.
As the further optimization of the device is demolishd to above-mentioned vertical turbine stator lower casing: the lead screw is fixedly connected with a rotary table, a through hole is formed in the rotary table, the middle of the through hole is expanded outwards along the radial direction of the rotary table to form an annular groove, a fixed shaft is arranged in the through hole and connected with the bottom wall of the transmission case, and two bulges are formed on the fixed shaft in an extending mode along the radial direction and extend into the annular groove.
The beneficial effects are that: according to the dismounting device for the lower sleeve of the guide vane of the vertical water turbine, the hoop is fixed on the guide vane in the dismounting process, the hoop is pushed to move upwards by driving the ejector rod to move upwards so as to drive the guide vane to move upwards, uneven stress of the guide vane is prevented, the phenomena of thread slipping and breakage of the ejector rod are avoided, the dismounting operation by the dismounting device can greatly reduce the labor amount of workers, the labor intensity is reduced, and the overhauling efficiency is improved.
Drawings
FIG. 1 is a schematic view of the construction of the lower sleeve;
FIG. 2 is a schematic view of the demolition apparatus;
FIG. 3 is a schematic view of the structure of the flange;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
fig. 5 is a schematic structural diagram of the hoop.
Description of the drawings: 1. guide vane, 2, basic ring, 3, lower sleeve, 4, sealing support, 5, handle bolt, 6, first jackscrew hole, 7, flange, 701, first screw hole, 702, second jackscrew hole, 8, lifting lug, 9, fastening nut, 10, screw rod, 11, upright post, 12, reinforcing plate, 13, base, 14, transmission shaft, 15, transmission gear, 16, driving gear, 17, driving shaft, 18, motor, 19, transmission case, 20, rotary table, 21, driven bevel gear, 22, transmission bevel gear, 23, connecting plate, 24, lead screw nut, 25, lead screw, 26, ejector pin, 27, fixed shaft, 28, semicircular ring, 29, connecting bolt, 30, blind hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 5, a device for removing a lower sleeve of a guide vane of a vertical water turbine includes a guide vane 1 and a lower sleeve 3, one end of the lower sleeve 3 is an open end, the guide vane 1 extends into the lower sleeve 3 from the open end of the lower sleeve 3, and the other end of the lower sleeve 3 is fixedly connected with a sealing plate, which is characterized in that: the dismounting device comprises two semicircular rings 28, the semicircular rings 28 are sleeved on the guide vane 1, the dismounting device further comprises a base 13, an upright post 11 is arranged on the base 13, the upright post 11 is fixedly connected with a sealing plate, a cavity is formed in the upright post 11, a plurality of power mechanisms are arranged in the cavity, the power mechanisms are in driving connection with a transmission mechanism, and the transmission mechanism is connected with at least two ejector rods 26 used for pushing the semicircular rings 28.
The cross-section of stator 1 main part is as shown in fig. 1, and stator 1's main part is equipped with sealed support 4 including the upper shaft, interlude and the lower shaft that from top to bottom connect gradually, and the cover is equipped with sealed support 4 on the lower shaft, and 3 covers of lower sleeve are established epaxial and are compressed tightly sealed support 4 down, and the cover is equipped with basic ring 2 on the lower sleeve 3, through closing bolt 5 fixed connection between basic ring 2 and the closing plate.
The axial direction of the upright post 11 is perpendicular to the base 13, in order to further fix the upright post 11, a reinforcing plate 12 is fixedly connected between the upright post 11 and the base 13, a cavity penetrates through the inside of the upright post 11 along the axial direction, a power mechanism is fixedly arranged in the cavity, the power mechanism is a power source of the dismounting device, a transmission mechanism is used for transmitting power to the ejector rod 26 and driving the ejector rod 26 to move up and down along the axial direction, and the ejector rod 26 is parallel to the upright post 11. In order to make stator 1 even and be convenient for ejector pin 26 drive stator 1 motion demolising the in-process atress, set up the staple bolt on stator 1, the staple bolt includes two semicircle rings 28, overlaps two semicircle rings 28 on the interlude, and the both ends of semicircle ring 28 all outwards extend and form the connecting block, have seted up the bolt hole on the connecting block, and two semicircle rings 28 amalgamation back makes two semicircle rings 28 common chucking stator 1 through connecting bolt 28 fixed connection. In order to facilitate the pushing of the semi-circular ring 28 by the push rod 26, the semi-circular ring 28 is provided with a plurality of blind holes 30 matched with the push rod 26.
When the guide vane is dismounted, the closing bolt 5 connecting the sealing plate and the base ring 2 is firstly taken down, then the upright post 11 is fixedly connected with the sealing plate, then the power mechanism is started, the power is transmitted to the ejector rod 26 by the transmission mechanism, the ejector rod 26 moves upwards, the ejector rod 26 continues to move upwards after being inserted into the corresponding blind hole 30, the ejector rod 26 drives the guide vane 1 to move upwards through the hoop until the lower sleeve 3 is separated from the guide vane 1, and the dismounting process is completed.
Example 2
Example 2 is an improvement over example 1: the stand 11 fixedly connected with flange 7, the closing plate passes through the jackscrew with flange 7 and is connected, has seted up a plurality of first jackscrew holes 6 on the closing plate, has seted up a plurality of and first jackscrew hole 6 matched with second jackscrew hole 702 on the flange 7.
The concrete connection mode of stand 11 and the closing plate of lower sleeve 3 does: the upright post 11 is connected with the sealing plate through the flange 7, the upright post 11 and the flange 7 can be fixedly connected through screws, the flange 7 can be sleeved on the upright post 11, or other connection modes can be adopted. Four first jackscrew holes 6 are formed in the sealing plate, four second jackscrew holes 702 matched with the first jackscrew holes 6 are formed in the flange 7, and the flange 7 is connected with the sealing plate through jackscrews.
Example 3
Example 3 is an improvement on the basis of example 2: the concrete connection mode of the upright post 11 and the flange 7 is as follows: the upright post 11 is fixedly connected with two lifting lugs 8, a screw rod 10 penetrates through the lifting lugs 8, and the screw rod 10 is fixedly connected with the flange 7.
Two first screw holes 701 have been seted up on the flange 7, the lug 8 is last to be seted up with first screw hole 701 matched with second screw hole, two first screw holes 701 correspond with two second screw holes respectively, wear to establish screw rod 10 in corresponding first screw hole 701 and the second screw hole, between screw rod 10 and the flange 7, all fix through fastening nut 9 between screw rod 10 and the lug 8, all be provided with the gasket between fastening nut 9 and the flange 7 and between fastening nut 9 and the lug 8, the gasket cover is established on screw rod 10.
Example 4
Example 4 is an improvement over example 1: the power mechanism comprises a driving shaft 17 which is rotatably arranged, a driving gear 16 is arranged on the driving shaft 17 in a matching mode, the transmission mechanism comprises a transmission gear 15 which is meshed with the driving gear 16, a transmission shaft 14 penetrates through the transmission gear 15, two ends of the transmission shaft 14 extend to the outside of the upright post 11, and a transmission assembly used for controlling the ejector rod 26 to move is arranged at the end portion of the transmission shaft 14 in a matching mode.
The driving shaft 17 is parallel to the base 13, two shaft holes are formed in the side wall of the upright post 11 along the horizontal line direction, bearings are arranged in the shaft holes, and two ends of the driving shaft 17 are connected with the two bearings respectively. The driving shaft 17 rotates to drive the driving gear 16 to rotate, the driving gear 16 drives the transmission gear 15 to rotate, the transmission gear 15 drives the transmission shaft 14 to rotate, the transmission shaft 14 and the driving shaft 17 are parallel to each other, the transmission shaft 14 transmits power to the transmission assembly, and the transmission assembly drives the ejector rod 26 to move in the axial direction.
Example 5
Example 5 is a modification made on the basis of example 4: the power mechanism also comprises a motor 18 for driving the driving shaft 17 to rotate.
The rotation of the driving shaft 17 can be completed manually by adding a hand wheel or driven by a motor 18. Adopt electronic mode in this embodiment, can reduce staff's the amount of labour, reduce the work degree of difficulty.
Example 6
Example 6 is a modification made on the basis of example 4: the base 13 is fixedly provided with a transmission case 19, the end part of the transmission shaft 14 extends into the transmission case 19, the transmission assembly comprises a transmission bevel gear 22 which is arranged at the end part of the transmission shaft 14 in a matching manner, a lead screw 25 is arranged in the transmission case 19 in a rotating manner, a driven bevel gear 21 which is meshed with the transmission bevel gear 22 is arranged on the lead screw 25 in a matching manner, one end of the lead screw 25 extends out of the transmission case 19, a section of the lead screw 25, which is positioned outside the transmission case 19, is provided with a lead screw nut 24 in a matching manner, the lead screw nut 24 is fixedly connected with at least one ejector rod 26, and the ejector rod 26 extends into the transmission case 19.
The transmission bevel gear 22 is arranged at the end of the transmission shaft 14, the transmission shaft 14 drives the transmission bevel gear 22 to rotate, the transmission bevel gear 22 drives the driven bevel gear 21 to rotate, and the driven bevel gear 21 drives the screw rod 25 to rotate. In order to prevent the screw rod 25 from making linear motion while rotating, a section of the screw rod 25 connected with the driven bevel gear 21 is not provided with threads, and the driven bevel gear 21 does not make linear motion during the rotation process, so that the linear motion of the screw rod 25 is limited. The screw 25 should drive the screw nut 24 to rotate, but the push rod 26 limits the rotation of the screw nut 24, so that the screw nut 24 moves linearly along the axial direction of the screw 25 when the screw 25 rotates.
A lead screw nut 24 is connected with two ejector rods 26, the ejector rods 26 extend into the transmission case 19, when the lead screw 25 rotates, the transmission case 19 limits the rotation of the ejector rods 26, so that the rotation of the lead screw nut 24 is limited, the lead screw nut 24 can only do linear motion along the axial direction of the lead screw 25, and the lead screw nut 24 drives the ejector rods 26 to do linear motion synchronously while doing linear motion.
Example 7
Example 7 is a modification made on the basis of example 6: the lead screw nut 24 is fixedly connected with a connecting plate 23, and the ejector rod 26 is fixedly connected with the connecting plate 23.
Be provided with the support frame on the diapire of transmission case 19, driven bevel gear 21 rotates and sets up on the support frame, and the support frame includes the backup pad, two bracing pieces of fixedly connected with between backup pad and the transmission case 119 diapire. One section of the ejector rod 26 penetrates through the connecting plate 23 and then penetrates through the top of the transmission case 19 to extend into the transmission case 19, and one end, extending into the transmission case 19, of the ejector rod 26 penetrates through the supporting plate.
Example 8
Example 8 is a modification made on the basis of example 6: the specific arrangement mode between the screw 25 and the transmission case 19 is as follows: the screw rod 25 is fixedly connected with a rotary table 20, a through hole is formed in the rotary table 20, the middle of the through hole is expanded outwards along the radial direction of the rotary table 20 to form an annular groove, a fixing shaft 27 is arranged in the through hole, the fixing shaft 27 is connected with the bottom wall of the transmission case 19, two bulges are formed on the fixing shaft 27 in an extending mode along the radial direction, and the bulges extend into the annular groove.
The end part of the screw rod 25 positioned in the transmission case 19 is provided with a strip hole along the axial direction, one end of the fixed shaft 27 is fixedly connected with the bottom wall of the transmission case 19, and the other end of the fixed shaft 27 extends into the strip hole. When the rotary disc rotates along with the screw rod 25, the protrusion on the fixed shaft 27 extends into the annular groove to limit the linear motion of the rotary disc 20 in the axial direction, and the rotary disc 20 cannot be separated from the fixed shaft 27, so that the screw rod 25 cannot move linearly in the axial direction.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a device is demolishd to sleeve under vertical hydraulic turbine stator, the hydraulic turbine includes stator (1) and lower sleeve (3), and lower sleeve (3) one end is for opening the end, and during stator (1) stretched into lower sleeve (3) from the end that opens of lower sleeve (3), lower sleeve (3) other end fixedly connected with closing plate, its characterized in that: the dismounting device comprises two semicircular rings (28), the semicircular rings (28) are sleeved on the guide vane (1), the dismounting device further comprises a base (13), an upright post (11) is arranged on the base (13), the upright post (11) is fixedly connected with the sealing plate, a cavity is formed in the upright post (11), a plurality of power mechanisms are arranged in the cavity, the power mechanisms are in driving connection with a transmission mechanism, and the transmission mechanism is connected with at least two ejector rods (26) used for pushing the semicircular rings (28).
2. The vertical turbine guide vane lower sleeve dismounting device as set forth in claim 1, wherein: stand (11) fixedly connected with flange (7), the closing plate passes through the jackscrew with flange (7) and is connected, has seted up a plurality of first jackscrew holes (6) on the closing plate, has seted up a plurality of second jackscrew holes (702) with first jackscrew hole (6) matched with on flange (7).
3. The vertical turbine guide vane lower sleeve dismounting device as set forth in claim 2, wherein: the upright post (11) is fixedly connected with two lifting lugs (8), a screw rod (10) penetrates through the lifting lugs (8), and the screw rod (10) is fixedly connected with the flange (7).
4. The vertical turbine guide vane lower sleeve dismounting device as set forth in claim 1, wherein: the power mechanism comprises a driving shaft (17) which is rotatably arranged, a driving gear (16) is arranged on the driving shaft (17) in a matching mode, the transmission mechanism comprises a transmission gear (15) which is meshed with the driving gear (16), a transmission shaft (14) penetrates through the transmission gear (15), two ends of the transmission shaft (14) extend to the outside of the upright post (11), and a transmission assembly which is used for controlling the ejector rod (26) to move is arranged at the end of the transmission shaft (14) in a matching mode.
5. The vertical turbine guide vane lower sleeve dismounting device as set forth in claim 4, wherein: the power mechanism also comprises a motor (18) for driving the driving shaft (17) to rotate.
6. The vertical turbine guide vane lower sleeve dismounting device as set forth in claim 4, wherein: the automatic transmission device is characterized in that a transmission case (19) is fixedly arranged on the base (13), the end part of the transmission shaft (14) extends into the transmission case (19), the transmission assembly comprises a transmission bevel gear (22) which is arranged at the end part of the transmission shaft (14) in a matched mode, a lead screw (25) is arranged in the transmission case (19) in a rotating mode, a driven bevel gear (21) meshed with the transmission bevel gear (22) is arranged on the lead screw (25) in a matched mode, one end of the lead screw (25) extends out of the transmission case (19), a lead screw nut (24) is arranged on one section, located outside the transmission case (19), of the lead screw (25) in a matched mode, the lead screw nut (24) is fixedly connected with at least one ejector rod (26), and the ejector rod (26) extends into the transmission case (19).
7. The vertical turbine guide vane lower sleeve dismounting device as set forth in claim 6, wherein: the lead screw nut (24) is fixedly connected with a connecting plate (23), and the ejector rod (26) is fixedly connected with the connecting plate (23).
8. The vertical turbine guide vane lower sleeve dismounting device as set forth in claim 6, wherein: the lead screw (25) is fixedly connected with a rotary table (20), a through hole is formed in the rotary table (20), the middle of the through hole is radially expanded outwards along the rotary table (20) to form an annular groove, a fixed shaft (27) is arranged in the through hole, the fixed shaft (27) is connected with the bottom wall of the transmission case (19), two bulges are formed on the fixed shaft (27) in an extending mode along the radial direction, and the bulges extend into the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123065425.5U CN216504830U (en) | 2021-12-08 | 2021-12-08 | Device is demolishd to lower sleeve of vertical hydraulic turbine stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123065425.5U CN216504830U (en) | 2021-12-08 | 2021-12-08 | Device is demolishd to lower sleeve of vertical hydraulic turbine stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216504830U true CN216504830U (en) | 2022-05-13 |
Family
ID=81466983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123065425.5U Active CN216504830U (en) | 2021-12-08 | 2021-12-08 | Device is demolishd to lower sleeve of vertical hydraulic turbine stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216504830U (en) |
-
2021
- 2021-12-08 CN CN202123065425.5U patent/CN216504830U/en active Active
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