CN211889717U - Mounting structure of shaft-to-propeller type runner without turning over - Google Patents
Mounting structure of shaft-to-propeller type runner without turning over Download PDFInfo
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- CN211889717U CN211889717U CN202020145169.7U CN202020145169U CN211889717U CN 211889717 U CN211889717 U CN 211889717U CN 202020145169 U CN202020145169 U CN 202020145169U CN 211889717 U CN211889717 U CN 211889717U
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Abstract
The utility model discloses an installation structure of an axial-flow propeller type runner without turning over, which comprises a runner body, wherein the side wall of the runner body is provided with a pivot, one end of the pivot facing the outside of the runner body is fixedly provided with a paddle, and one side of the pivot facing the inside of the runner body is provided with a crank arm; a rotating wheel cover is arranged above the rotating wheel body, a piston rod and a piston are arranged in the rotating wheel body, the piston is fixedly connected to the lower end of the piston rod, and a hydraulic cavity matched with the piston is arranged at the lower end of the rotating wheel body; a plurality of oil passages with outlets respectively corresponding to the two sides of the piston are arranged in the hydraulic cavity; the piston rod is provided with an operating frame, the operating frame and the crank arm are respectively connected to two ends of a connecting rod, and the operating frame is positioned above the crank arm; the upper end of the piston rod is provided with a piston rod support, the piston rod support is provided with a guide shaft sleeve in clearance fit with the piston rod, and the piston rod support is fixedly connected with the rotating wheel cover. The utility model has the advantages of the security is high, saves runner installation time.
Description
Technical Field
The utility model belongs to the axial flow hydraulic turbine field specifically is an installation structure that axle circulation oar formula runner need not stand up.
Background
The large-medium or ultra-large axial flow Kaplan turbine mostly adopts a cylinder-operated or conventional piston-operated structure, the conventional piston-operated structure means that a relay cylinder is arranged in a runner body at the main shaft side of the runner, and the two blade operating mechanisms are positioned below the center line of the runner. For example, the chinese patent document entitled "blade rotating arm structure of bulb through-flow turbine" published in 2018, 6/19. 207513727U, entitled "a utility model of a blade rotating arm structure of a bulb through-flow turbine", includes a runner body, a hub body core, runner blades, a rotating arm, and a rotating arm pivot, wherein the hub body core is detachably fixed inside the runner body and is coaxial with the runner body; the runner blades penetrate through the runner body, are detachably fixed with the runner body and extend along the radial direction of the runner body; the pivot of the rotating arm penetrates through the rotating arm and is detachably clamped between the hub body core and the rotating wheel blade; through runner paddle detachable and runner body setting, be convenient for realize the position calibration and the fixed to the rocking arm from the outside of runner body. The attached drawing in this application just discloses link mechanism of paddle operation is located the below of runner line, and for simple to operate and structure needs, the runner body needs the flip-chip, carries out installation such as paddle operating device, then stands up, and nevertheless hydraulic turbine weight is generally at 200~400 tons, and it is very big to stand up the degree of difficulty, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
Based on the above problem, the utility model provides a mounting structure that axle circulation oar formula runner need not stand up at runner installation and hoist and mount in-process, can eliminate the unsafe factor that the runner stands up the in-process and produces, has solved jar dynamic formula and conventional piston structure runner and need stand up after the assembly and carry out the technological problem of hoist and mount again, brings huge facility for runner installation and maintenance, has saved runner installation time limit for a project time greatly to the runner has been guaranteed at the installation safe and reliable.
In order to realize the purpose of the invention, the utility model adopts the following technical scheme: a mounting structure of an axial flow propeller type rotating wheel without turning over comprises a rotating wheel body, wherein the side wall of the rotating wheel body is provided with a pivot, one end of the pivot facing the outside of the rotating wheel body is fixedly provided with a paddle, and one side of the pivot facing the inside of the rotating wheel body is provided with a crank arm; a rotating wheel cover is arranged above the rotating wheel body, a piston rod and a piston are arranged in the rotating wheel body, the piston is fixedly connected to the lower end of the piston rod, and a hydraulic cavity matched with the piston is arranged at the lower end of the rotating wheel body; a plurality of oil passages with outlets respectively corresponding to the two sides of the piston are arranged in the hydraulic cavity; the piston rod is provided with an operating frame, the operating frame is fixed on the piston rod through a clamping ring, the operating frame and the connecting lever are respectively connected to two ends of a connecting rod, and the operating frame is positioned above the connecting lever; the upper end of the piston rod is provided with a piston rod support, the piston rod support is provided with a guide hole in clearance fit with the piston rod, and the piston rod support is fixedly connected with the rotating wheel cover.
The lower end of the runner body is suspended and fixed, the whole runner mounting structure can adopt a normal mounting mode, when blades are mounted, the piston rod, the pivot, the crank arm, the connecting rod and the operating frame can be directly hoisted by a crane, and then the mounting of the piston and the piston cylinder cover can be completed from bottom to top by adopting a lifting mechanism like a jack and the like; because the hydraulic cylinder and the runner hub are combined into an integral mechanism, the rigidity and the strength of the runner hub are greatly improved, and the stress and the deformation of the runner hub are obviously reduced compared with other structures with the same hub ratio.
Preferably, a piston cylinder cover is detachably and fixedly arranged at the lower end of the runner body, a hydraulic cavity is formed between the piston cylinder cover and the lower end of the runner body, an operation oil pipe is arranged in the piston rod, a cavity closing oil passage is formed by the hollow axis of the operation oil pipe, and a cavity opening oil passage is formed between the operation oil pipe and the piston rod. The inner cavity of the operation oil pipe is used as a cavity closing oil passage, hydraulic oil directly enters the center of the hydraulic cavity, response is fast, and hydraulic transmission is stable.
Preferably, an open cavity oil passage is formed between the operating oil pipe and the piston rod, the piston rod is provided with a plurality of oil holes above the piston, and the oil holes are circumferentially arrayed around the axis of the wheel body. The pressure oil uniformly acts on the piston through the cavity-opening oil passage and the oil hole, and the stability of the piston motion is high.
Preferably, the operating frame is provided with a fixing part, the fixing part is provided with an ear bolt, the operating frame is provided with a mounting hole matched with the ear bolt, the ear bolt penetrates through the mounting hole and then is connected with the mounting hole through a nut, and the fixing part is hinged with one end of the connecting rod. Because the nut of ear shank bolt upper end is fixed, the height of handling frame can finely tune, consequently can make things convenient for the handling frame to be connected with the connecting rod.
Preferably, the outer side of the operating frame is provided with a gear rib parallel to the axis of the piston rod, the gear rib is provided with a guide block, and the inner wall of the rotating wheel body is fixedly provided with a guide rail matched with the guide block. The guide block and the guide rail are matched with the limiting piston rod and the operation frame to rotate, and guide is provided for the axial movement of the piston rod, the operation frame and the piston.
Preferably, the inner side of the operating frame is of a ring surface structure, and the mounting hole of the operating frame is positioned in the ring surface. The ring surface structure of the operating frame has good balance, has small influence on the structural stability of the piston rod, and is beneficial to the stable transmission of the piston and the piston rod.
Preferably, the inner side of the operating frame and the side face of the piston rod are provided with matched key groove structures, and matched keys in the key groove structures are fixed with the piston rod through screws. Prevent the rotation of connecting piece and piston rod through keyway cooperation structure, because piston rod and handling frame are the jumbo size part, through screw fixed key and piston rod, can improve the reliability of keyway structure.
To sum up, the beneficial effects of the utility model are that: by adopting a normal installation mode, the turning-over is not needed in the turning-over and hoisting processes, unsafe factors generated in the turning-over process of the turning-over wheel can be eliminated, the technical problem that the turning-over and hoisting are needed after the turning-over of the cylinder-moving type and conventional piston type structure turning-over wheels are assembled is solved, great convenience is brought to the mounting and maintenance of the turning-over wheel, the time of the mounting period of the turning-over wheel is greatly saved, and the safety and the reliability of the turning-; the structural stability of the device is high; because the hydraulic cylinder and the runner hub are combined into an integral mechanism, the rigidity and the strength of the runner hub are greatly improved, and the stress and the deformation of the runner hub are obviously reduced compared with other structures with the same hub ratio.
Drawings
Fig. 1 is a schematic structural diagram of the present invention, wherein the two-dot chain line is a schematic structural diagram of the fully opened state of the paddle.
Fig. 2 is the structure schematic diagram of the middle blade traction structure of the present invention, wherein the two-dot chain line is the state diagram of the blade and the crank arm when the blade is fully opened.
Wherein: the runner cover 1 operates the oil pipe 2, the runner body 3 opens the cavity oil passage 31, the hydraulic cavity 32, the piston 4, the piston cylinder cover 41, the piston rod 42 closes the cavity oil passage 43, the piston rod support 44, the operating frame 45, the snap ring 46, the guide block 47, the guide rail 48, the fixing part 5, the lug bolt 51, the nut 52, the connecting rod 6, the crank arm 7, the pivot 71 and the blade 72, the drain cone 8.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and fig. 2, the embodiment is an installation structure of an axial-flow propeller type runner without turning over, and includes a runner body 3, a pivot 71 is provided on a side wall of the runner body 3, a paddle 72 is fixedly provided at one end of the pivot 71 facing the outside of the runner body 3, and a crank arm 7 is provided at one side of the pivot 71 facing the inside of the runner body 3; a runner cover 1 is arranged above the runner hub 3, a piston rod 42 and a piston 4 are arranged in the runner hub 3, the piston 4 is fixedly connected to the lower end of the piston rod 42, and a hydraulic cavity 32 matched with the piston 4 is arranged at the lower end of the runner hub 3; a plurality of oil passages with outlets respectively corresponding to two sides of the piston 4 are arranged in the hydraulic cavity 32; the lower extreme of runner hub 3 can be dismantled fixedly and be equipped with piston cylinder cap 41, forms hydraulic pressure chamber 32 between piston cylinder cap 41 and the runner hub 3 lower extreme, and the piston rod 42 internal clearance is equipped with operation oil pipe 2, and the axis cavity of operation oil pipe 2 forms open chamber oil duct 43, forms closed chamber oil duct 31 between operation oil pipe 2 and the piston rod 42, and piston rod 42 is opened above piston 4 has a plurality of oilholes, and the oilhole revolves the circumferential array of runner hub axis and sets up.
The piston rod 42 is provided with an operating frame 45 which is arranged outwards along the radial direction of the piston rod, and the operating frame 45 is positioned above the crank arm 7; the piston rod 42 is provided with a shaft shoulder ring protruding outwards for limiting, the upper end of the operating frame 45 is fixed on the piston rod 42 through a clamping ring 46, the inner side of the operating frame 45 and the side face of the piston rod 42 are provided with matched key groove structures, matched keys of the key groove structures are flat keys, and the flat keys and the piston rod 42 are fixed through screws. The outer end of the operating frame 45 is provided with a gear rib parallel to the axis of the piston rod 42, the gear rib is provided with a guide block 47, and the inner wall of the rotating wheel body 3 is fixedly provided with a guide rail 48 matched with the gear rib. The guide rail 48 is fixed to the inner wall surface of the runner body 3 by screws.
The operation frame 45 and the crank arm 7 are respectively connected to two ends of a connecting rod 6, a fixing piece 5 is arranged on the operation frame 45, and the fixing piece 5 is vertically fixed on the operation frame 45; the upper side of the fixing part 5 is provided with a vertical ear bolt 51, the operating frame 45 is provided with a mounting hole matched with the ear bolt 51, the ear bolt 51 penetrates through the mounting hole and then is connected through a nut 52, and the ear bolt 51 is hinged with one end of the connecting rod 6. The upper end of the piston rod 42 is provided with a piston rod support 44, the piston rod support 44 is provided with a guide hole in clearance fit with the piston rod 42, and the piston rod support 44 is fixedly connected with the runner cover 1 through a screw.
When the structure is installed, the runner hub 3 is arranged on the buttress, the lower end of the runner hub 3 is suspended, the installation of the side pivot 71, the crank arm 7, the connecting rod 6 and the lug bolt 51 of the runner hub 3 is completed through a crane, the guide rail 48 is fixed on the other side of the inner wall of the runner hub 3 through a screw, and the piston rod 42 and the operation frame 45 of the installed operation oil pipe 2 are hoisted into the runner hub 3; it should be noted that in this step, the piston rod 42 and the operation frame 45 may be pre-assembled, and the whole may be lifted into the rotating wheel body 3 from top to bottom, the tooth rib of the operation frame 45 is engaged with the guide rail 48, the piston rod 42 is inserted into the hydraulic cylinder, and then the connection between the fixing member 5 and the operation frame 45 is completed. And finally, hoisting the runner cover 1 and the blades 72 at the upper end of the runner body 3, and fixing the piston rod support 44 on the runner cover 1 through screws before hoisting the runner cover 1. The piston 4 and the piston cylinder cover 41 are sequentially lifted and installed at the lower end of the runner body 3 through the lifting mechanism, the device integrally adopts a normal installation mode, the runner does not need to be turned over in the installation and hoisting processes, unsafe factors generated in the turning-over process of the runner can be eliminated, the technical problem that the runner with a cylinder moving type and a conventional piston 4 type structure needs to be turned over after being assembled and then hoisted is solved, great convenience is brought to the installation and maintenance of the runner, the time for installing the runner is greatly saved, and the safety and reliability of the runner in the installation process are ensured; the structural stability of the device is high; because the hydraulic cylinder and the runner hub 3 are combined into an integral mechanism, the rigidity and the strength of the runner hub 3 are greatly improved, and the stress and the deformation of the runner hub 3 are obviously reduced compared with other structures with the same hub ratio.
When the device is used, hydraulic oil flows into the hydraulic cavity 32 through the cavity-opening oil passage 43 in the operation oil pipe 2 and acts on the lower end of the piston, the oil inlet direction is shown as an arrow in fig. 1, the piston rod 42 moves upwards from the position of the double-dot chain line to the position of the solid line, when the piston rod 42 ascends, the operation frame 45 drives the fixing piece 5 to ascend, the two ends of the connecting rod 6 are hinged with the crank arm 7 and the fixing piece 5, the fixing piece 5 drives the crank arm 7 to rotate around the axis of the pivot 71 in the ascending process, due to the initial fastening connection of the crank arm 7, the pivot 71 and the paddle 72, as shown in fig. 2, the crank arm 7 rotates from the position of the double-dot chain line to the position of the solid line, meanwhile, the paddle 72 rotates to the position. The application is implemented in the Guangxi big rattan power station, the rated rotation speed of the unit is 65.2r/min, the runaway rotation speed is 195.2r/min, the single-machine capacity is 200MW, the highest operation water head is 37.79m, the diameter of a rotating wheel is 10.4m, and the water-turbine generator set is the largest single-machine capacity in the world.
After the paddle 72 is installed, oil is drained through an oil drain valve arranged on the piston cylinder cover 41, the piston cylinder cover 41 and the piston 4 are removed, the piston rod support 44 and the runner cover 1 are removed, the crank arm 7 and the connecting rod 6 are removed, the piston rod 42 is hoisted, the mounting structure can be dismounted, the water drain cone 8 can be mounted at the lower end of the runner body 3, and the whole mounting and forming of the runner are completed.
Claims (6)
1. A mounting structure of an axial flow propeller type rotating wheel without turning over comprises a rotating wheel body, wherein the side wall of the rotating wheel body is provided with a pivot, one end of the pivot facing the outside of the rotating wheel body is fixedly provided with a paddle, and one side of the pivot facing the inside of the rotating wheel body is provided with a crank arm; the hydraulic rotary wheel is characterized in that a piston rod and a piston are arranged in the rotary wheel body, the piston is fixedly connected to the lower end of the piston rod, and a hydraulic cavity matched with the piston is arranged at the lower end of the rotary wheel body; a plurality of oil passages with outlets respectively corresponding to the two sides of the piston are arranged in the hydraulic cavity; the piston rod is provided with an operating frame, the operating frame and the crank arm are respectively connected to two ends of a connecting rod, and the operating frame is positioned above the crank arm; the upper end of the piston rod is provided with a piston rod support, the piston rod support is provided with a guide hole in clearance fit with the piston rod, and the piston rod support is fixedly connected with the rotating wheel cover.
2. The mounting structure of a shaft-to-rotor rotary wheel without turning over according to claim 1, wherein a piston cylinder cover is detachably and fixedly arranged at the lower end of the rotary wheel body, a hydraulic cavity is formed between the piston cylinder cover and the lower end of the rotary wheel body, an operation oil pipe is arranged in the piston rod, a cavity-closed oil passage is formed by the hollow axis of the operation oil pipe, and a cavity-open oil passage is formed between the operation oil pipe and the piston rod.
3. The mounting structure of an axial-flow propeller-type rotating wheel without turning over as claimed in claim 2, wherein an open-cavity oil passage is formed between the operating oil pipe and the piston rod, the piston rod is provided with a plurality of oil holes above the piston, and the oil holes are circumferentially arrayed around the axis of the rotating wheel body.
4. The mounting structure of an axial-flow propeller type rotating wheel without turning over as claimed in claim 1, 2 or 3, wherein the operating frame is provided with a fixing member, the fixing member is provided with an ear bolt, the operating frame is provided with a mounting hole matched with the ear bolt, and the ear bolt passes through the mounting hole and then is connected with the mounting hole through a nut.
5. The installation structure of an axial flow propeller-type rotating wheel without turning over as claimed in claim 4, wherein the operating frame is provided with tooth ribs parallel to the axis of the piston rod at the outer side, guide blocks are arranged on the tooth ribs, and guide rails matched with the tooth ribs are fixedly arranged on the inner wall of the rotating wheel body.
6. The mounting structure of an axial flow propeller-type rotating wheel without turning over as claimed in claim 1, wherein the inner side of the operating frame and the side surface of the piston rod are provided with matched key groove structures, and matched keys in the key groove structures are fixed with the piston rod through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020145169.7U CN211889717U (en) | 2020-01-22 | 2020-01-22 | Mounting structure of shaft-to-propeller type runner without turning over |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020145169.7U CN211889717U (en) | 2020-01-22 | 2020-01-22 | Mounting structure of shaft-to-propeller type runner without turning over |
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| Publication Number | Publication Date |
|---|---|
| CN211889717U true CN211889717U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020145169.7U Active CN211889717U (en) | 2020-01-22 | 2020-01-22 | Mounting structure of shaft-to-propeller type runner without turning over |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117300952A (en) * | 2023-11-28 | 2023-12-29 | 常州市中海船舶螺旋桨有限公司 | Screw is flicked and is joined in marriage frock |
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2020
- 2020-01-22 CN CN202020145169.7U patent/CN211889717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117300952A (en) * | 2023-11-28 | 2023-12-29 | 常州市中海船舶螺旋桨有限公司 | Screw is flicked and is joined in marriage frock |
| CN117300952B (en) * | 2023-11-28 | 2024-02-09 | 常州市中海船舶螺旋桨有限公司 | Screw is flicked and is joined in marriage frock |
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