CN217264235U - Steam turbine impeller mounting structure - Google Patents

Abstract

The utility model belongs to the technical field of large-scale machinery installation, especially, a steam turbine impeller mounting structure, including adjustment mechanism, adjustment mechanism includes upper and lower distribution mutual rotation connected hanging wall and lower wall, hanging wall side symmetry is fixed with two extension mechanisms, the bottom of lower wall is fixed with hoisting mechanism, control mechanism is all installed at the bottom surface both ends of extension mechanism, hoisting rope bottom fixedly connected with extension type binding mechanism, hoisting mechanism's bottom surface fixedly connected with two hoisting ropes, the middle part of haulage rope is provided with pulling force detection mechanism; the traction rope at one output end of the control mechanism is fixed on the side face of the extension type binding mechanism, and the control mechanism is located on one side close to the upper disc, so that the extension type binding mechanism is obliquely pulled by the traction rope, the fixing rope is tightly attached to the side face of the groove body, and the condition that the impeller and the fixing rope slide relatively due to inertia is avoided when the gantry crane moves along the axial direction of the impeller.

Description

Steam turbine impeller mounting structure

Technical Field

The utility model belongs to the technical field of large-scale machinery installation, concretely relates to steam turbine impeller mounting structure.

Background

When the impeller is installed, a gantry crane is needed to hoist, after the front end shaft and the rear end shaft of the impeller are fixed, the hoisting is moved to the position of an impeller bin of the turbine to descend, so that the shafts can be matched with the groove body, but when the impeller reaches an installation position, fine adjustment is needed through the gantry crane, when the gantry crane is fine adjusted along the axial direction, the impeller shaft and the binding band are easily affected by the inertia of the impeller shaft to move relatively, secondary deviation of the positions of the impeller shaft and the binding band occurs at the moment, the impeller shaft is too heavy, and when the auxiliary handle of an installer controls, the physical consumption is too large, and even the physical consumption cannot play a role.

SUMMERY OF THE UTILITY MODEL

The utility model provides a following technical scheme: including adjustment mechanism, adjustment mechanism includes upper and lower distribution rotation connection's hanging wall and lower wall, hanging wall side symmetry is fixed with two extension mechanisms, the bottom of lower wall is fixed with hoisting machine and constructs, control mechanism is all installed at extension mechanism's bottom surface both ends, two hoist ropes of hoisting machine's bottom surface fixedly connected with, mechanism is bound to hoist rope bottom fixedly connected with extension, extension is bound the mechanism bottom and is passed through fixed rope and impeller shaft fixed connection, control mechanism has two outputs, and one of them output passes through haulage rope fixed connection and is in the side that mechanism was bound to the extension, another output of control mechanism passes through angle modulation rope fixed connection hoisting machine constructs the side, the middle part of haulage rope is provided with tension detection mechanism.

The top of the lower disc is fixedly connected with a rotating fluted disc, and the lower disc is rotatably connected to the inner part of the upper disc through the rotating fluted disc.

Wherein, pulling force detection mechanism includes outer sleeve and sliding connection the inside interior slider of outer sleeve, the top of interior slider with through extension spring elastic connection between the outer sleeve, the inner wall bottom of outer sleeve install trigger switch and with trigger switch signal connection's bee calling organ, the outer sleeve with it is right all to install in the hanging wall inside the magnetism slider locking mechanism that is used for interior slider the locking of rotating fluted disc.

The magnetic sliding block locking mechanism is composed of a body, a wedge block, an electromagnet and a spring, wherein the wedge block is connected to the end portion of the body in a sliding mode, and the electromagnet is installed inside the body and is in magnetic connection with a magnet on the back face of the wedge block.

And one side of the extension mechanism, which is far away from the adjusting mechanism, is symmetrically and fixedly connected with two symmetrically distributed auxiliary rings.

The utility model has the advantages that:

1. the traction rope of one output end of the control mechanism is fixed on the side face of the extension type binding mechanism, and the traction rope is located on one side close to the upper disc, so that the extension type binding mechanism is pulled obliquely by the traction rope, the fixing rope is tightly attached to the side face of the groove body, and the condition that the impeller and the fixing rope slide relatively due to inertia is avoided when the gantry crane moves along the axial direction of the impeller.

2. Meanwhile, the hoisting mechanism is controlled to move left and right through the angle adjusting rope at the output end of the control mechanism, so that the angle change of the impeller shaft is realized, and the device can enable the impeller to be precisely finely adjusted above the mounting bin when the impeller is mounted, so that the burden of mounting personnel is reduced.

3. The tension detection mechanism is used for controlling the tension, the tension stress condition of each traction rope can be judged through the tension detection mechanism, the difference between the release speed and the winding speed is further judged, the control is timely adjusted, and the safety of installation personnel is prevented from being threatened due to rope breakage.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a side view of the present invention;

fig. 4 is a schematic front view of the present invention;

fig. 5 is a schematic cross-sectional view of the middle tension detecting mechanism of the present invention;

in the figure: 1. an adjustment mechanism; 11. hanging the plate; 12. a bottom wall; 121. rotating the fluted disc; 2. an extension mechanism; 21. an auxiliary ring; 3. a control mechanism; 31. a hauling rope; 4. a hoisting mechanism; 41. hoisting a rope; 5. a tension detection mechanism; 51. an outer sleeve; 52. an inner slide block; 53. a tension spring; 54. a trigger switch; 55. a buzzer; 6. an angle adjusting rope; 7. an extended binding mechanism; 71. fixing a rope; 8. magnetic slider locking mechanism.

Detailed Description

Referring to fig. 1-5, the present invention provides the following technical solutions: including adjustment mechanism 1, adjustment mechanism 1 includes upper plate 11 and lower plate 12 that upper and lower distribution rotation connects, upper plate 11 side symmetry is fixed with two extension mechanisms 2, the bottom of lower plate 12 is fixed with hoisting machine and constructs 4, control mechanism 3 is all installed at extension mechanism 2's bottom surface both ends, two hoisting ropes 41 of hoisting machine mechanism 4's bottom surface fixedly connected with, mechanism 7 is bound to the 41 bottom fixedly connected with extension of hoisting rope, 7 bottoms are bound to the extension formula through fixed rope 71 and impeller shaft fixed connection, control mechanism 3 has two outputs, one of them output passes through haulage rope 31 fixed connection and binds the side of mechanism 7 at the extension formula, another output of control mechanism 3 passes through 6 fixed connection of angle modulation rope in hoisting machine 4's side, the middle part of haulage rope 31 is provided with tensile force detection mechanism 5.

In this embodiment: the adjusting mechanism 1 comprises an upper disc 11 and a lower disc 12, the upper disc 11 is symmetrically and fixedly connected with an extension mechanism 2, the extension mechanism 2 is a T-shaped steel frame, the extension mechanism 2 and the upper disc 11 are fixedly connected with a sling, so that a gantry crane can drive an impeller to move and install through the installation structure, the impeller is provided with an impeller shaft which is linear, a hoisting mechanism 4 is made of long-strip steel at the moment, an extension type binding mechanism 7 is fixedly connected with the extension type binding mechanism 7 through a hoisting rope 41, the extension type binding mechanism 7 is a cylindrical metal column, the bottom and two ends of the extension type binding mechanism are respectively provided with a support lug or other structures connected with the rope, the bottom of the extension type binding mechanism 7 is fixed in a rotating groove at the front end part and the rear end part of the impeller shaft through a fixing rope 71, at the moment, a traction rope 31 of one output end of the control mechanism 3 is fixed on the side surface of the extension type binding mechanism 7, and the control mechanism 3 is positioned on one side close to the upper disc 11, the haulage rope 31 will extend formula and bind mechanism 7 to one side this moment, make fixed rope 71 hug closely the cell body side, when the portal crane moved along the impeller axial, avoid inertia to lead to impeller and fixed rope 71 the condition that relative slip appears, change about angle adjustment rope 6 control hoisting mechanism 4 through the output of control mechanism 3 simultaneously to realize the angle change of impeller shaft, the device can be when the impeller is installed, make the impeller carry out accurate fine setting above the installation storehouse, reduce installer's burden, improve the convenience of installation.

Adjusting the flow: two driving motors are respectively arranged in each control mechanism 3 to drive two winding rollers to independently control the traction rope 31 and the angle adjusting rope 6, when the traction ropes rotate to the left side, the installation of fig. 1 is an example, when the left side of the front end facing the direction is rotated, the motor located on the left side drives the angle adjusting rope 6 and the pulling rope 31 to wind, and the motor on the right side drives the angle adjusting rope 6 and the pulling rope 31 to release, therefore, bidirectional balance is realized, the rotation direction of the rear motor is opposite to that of the front motor, in order to avoid the inconsistent movement of the motors at the two sides, the tension detection mechanism 5 controls the tension, the tension detection mechanism 5 can judge the traction stress condition of each traction rope 31, and then judge the difference between release speed and the rolling speed, in time adjust control, avoid the rope fracture to make installer's safety receive the threat.

The top of the lower disc 12 is fixedly connected with a rotating fluted disc 121, the lower disc 12 is rotatably connected inside the upper disc 11 through the rotating fluted disc 121, the tension detection mechanism 5 comprises an outer sleeve 51 and an inner slide block 52 which is slidably connected inside the outer sleeve 51, the top of the inner slide block 52 is elastically connected with the outer sleeve 51 through a tension spring 53, the bottom end of the inner wall of the outer sleeve 51 is provided with a trigger switch 54 and a buzzer 55 which is in signal connection with the trigger switch 54, the outer sleeve 51 and the upper disc 11 are both internally provided with a magnetic slide block locking mechanism 8 which is used for locking the inner slide block 52 and the rotating fluted disc 121, the magnetic slide block locking mechanism 8 comprises a body, a wedge block, an electromagnet and a spring, the wedge block is slidably connected to the end of the body, and the electromagnet is arranged inside the body and is magnetically connected with a magnet on the back of the wedge block; in order to improve the stability during movement and ensure that the non-moving part is in a locking state in the moving state, a magnetic slider locking mechanism 8 is arranged, the magnetic slider locking mechanism 8 mainly moves through an electric control magnetic tape movable wedge block so as to be locked and moved with the rotating fluted disc 121, meanwhile, the tension detection mechanism 5 is locked through the magnetic slider locking mechanism 8 under the non-adjustment condition, after locking, the traction rope 31 can play an auxiliary hoisting role on the extension type binding mechanism 7, after the hoisting rope 41 is broken under stress, the traction rope 31 can play a secondary protection role, and meanwhile, in order to further improve the safety, when the traction rope 31 is stressed, the tension detection mechanism 5 can detect, and the tension spring 53 elastically deforms along with the movement of the inner slider 52, and controls the buzzer 55 to be started to alarm until the inner slider 52 is contacted with the trigger switch 54, at this time, the device is immediately stopped, so that the breakage caused by the excessive tension of the traction rope 31 can be avoided.

One side of the extension mechanism 2, which is far away from the adjusting mechanism 1, is symmetrically and fixedly connected with two auxiliary rings 21 which are symmetrically distributed; the lifting sling is too long, and when the lifting sling is installed, the impeller hoisted below can be excessively displaced due to slight movement, so that the rope can be connected through the auxiliary ring 21, and after the gantry crane moves to a specified point, the extension mechanism 2 can be secondarily fixed through the auxiliary ring 21 for equipment with high assembly precision requirements, so that secondary fine adjustment is performed through a mechanism below the extension mechanism 2, and the stability is improved.

The utility model discloses a theory of operation and use flow: the bottom of the extension type binding mechanism 7 is fixed in the rotating grooves at the front end part and the rear end part of the impeller shaft through a fixing rope 71, at the moment, the traction rope 31 at one output end of the control mechanism 3 is fixed at the side surface of the extension type binding mechanism 7, because the control mechanism 3 is positioned at one side close to the upper disc 11, at the moment, the traction rope 31 obliquely pulls the extension type binding mechanism 7, so that the fixing rope 71 is tightly attached to the side surface of the groove body, when a gantry crane moves along the axial direction of the impeller, the condition that the impeller and the fixing rope 71 slide relatively due to inertia is avoided, at the moment, the impeller shaft moves into an impeller bin, the magnetic slide block locking mechanism 8 is opened, the lower disc 12 and the upper disc 11 rotate relatively through the cooperative fit of the control mechanism 3, the impeller is driven to rotate and finely adjust, meanwhile, the detection is carried out through the tension detection mechanism 5, at the moment, along with the movement of the inner slide block 52, the tension spring 53 is elastically deformed, the buzzer 55 is controlled to be started to give an alarm until the inner sliding block 52 is contacted with the trigger switch 54, the traction stress condition of each traction rope 31 can be judged through the tension detection mechanism 5, the difference between the release speed and the winding speed is further judged, the control is timely adjusted, and the safety of installers is prevented from being threatened due to rope fracture.

Claims (5)

1. A steam turbine impeller mounting structure which characterized in that: including adjustment mechanism (1), adjustment mechanism (1) is including upper and lower distribution interrotation connected hanging wall (11) and lower wall (12), hanging wall (11) side symmetry is fixed with two extension mechanisms (2), the bottom of lower wall (12) is fixed with hoisting mechanism (4), control mechanism (3) are all installed at the bottom surface both ends of extension mechanism (2), two hoist and mount ropes (41) of bottom surface fixedly connected with of hoisting mechanism (4), hoist and mount rope (41) bottom fixedly connected with extension formula binding mechanism (7), extension formula binding mechanism (7) bottom is through fixed rope (71) and impeller shaft fixed connection, control mechanism (3) have two outputs, and one of them output passes through haulage rope (31) fixed connection and is in the side of extension formula binding mechanism (7), another output of control mechanism (3) passes through angle regulation rope (6) fixed connection hoisting mechanism (4) are in the side of extension formula binding mechanism (7), another output passes through angle regulation rope (6) fixed connection ) The middle part of the traction rope (31) is provided with a tension detection mechanism (5).

2. The turbine wheel mounting structure according to claim 1, wherein: the top of the lower disc (12) is fixedly connected with a rotating fluted disc (121), and the lower disc (12) is rotatably connected to the inner part of the upper disc (11) through the rotating fluted disc (121).

3. The turbine wheel mounting structure according to claim 2, wherein: pulling force detection mechanism (5) include outer sleeve (51) and sliding connection be in inside interior slider (52) of outer sleeve (51), the top of interior slider (52) with between outer sleeve (51) through extension spring (53) elastic connection, trigger switch (54) and with trigger switch (54) signal connection's bee calling organ (55) are installed to the inner wall bottom of outer sleeve (51), outer sleeve (51) with it is right all to install in hanging wall (11) inside interior slider (52) rotate magnetic slider locking mechanism (8) of fluted disc (121) locking.

4. The steam turbine wheel mounting structure according to claim 3, wherein: the magnetic sliding block locking mechanism (8) is composed of a body, a wedge block, an electromagnet and a spring, the wedge block is connected to the end portion of the body in a sliding mode, and the electromagnet is installed inside the body and is in magnetic connection with a magnet on the back face of the wedge block.

5. The turbine wheel mounting structure according to claim 1, wherein: one side of the extension mechanism (2) far away from the adjusting mechanism (1) is symmetrically and fixedly connected with two auxiliary rings (21) which are symmetrically distributed.

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