CN213439469U

CN213439469U - Dead axle device for overhauling vertical shaft water turbine

Info

Publication number: CN213439469U
Application number: CN202021476776.8U
Authority: CN
Inventors: 张宽; 张文强; 师彦锋
Original assignee: Xihe Hydroelectric Power Plant Of Shaanxi Hanjiang Investment Development Co ltd
Current assignee: Xihe Hydroelectric Power Plant Of Shaanxi Hanjiang Investment Development Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-06-15
Anticipated expiration: 2030-07-24

Abstract

The utility model relates to a power station overhauls equipment technical field, concretely relates to dead axle device for vertical axle hydraulic turbine overhauls, including adjustable positioning mechanism, adjustable positioning mechanism includes vertical lift adjustment mechanism, horizontal two-way straight line adjustment mechanism and positioning mechanism thereof, and horizontal two-way straight line adjustment mechanism installs the side at vertical lift adjustment mechanism's lift end through horizontal support arm, and positioning mechanism comprises two locating component that set up in opposite directions, and two locating component install respectively at two-way horizontal straight line adjustment mechanism's regulation end, still include on-line control monitoring system, the utility model discloses simple structure, can be nimble carry out nimble adjustment to the position of briquetting according to the position of main shaft dead axle, when the location, need not the manual dead axle that carries out of workman, improved the efficiency of dead axle, through setting up on-line control monitoring system, can be high-efficient, The fixed shaft operation of the main shaft is accurately realized, the stability and the accuracy of the fixed shaft are improved, and the follow-up better maintenance operation is facilitated.

Description

Dead axle device for overhauling vertical shaft water turbine

Technical Field

The utility model relates to a power station overhauls equipment technical field, concretely relates to dead axle device that is used for vertical axle hydraulic turbine to overhaul.

Background

The xi river hydropower station is controlled to store water in 18 days in 6 months in 2006, the first unit is put into production and generates power in 30 days in 6 months, and the third unit is put into commercial operation in 19 days in 12 months. The power station adopts an axial flow Kaplan turbine, and the model is as follows: ZZD 394-LH-580. Since the operation, when the water turbine needs to be overhauled all the time, according to the traditional shaft fixing method, a wedge-shaped plate needs to be inserted between the edge of each runner blade and the runner chamber and is firmly welded, so that the wedge-shaped plate is prevented from sliding off. Although the method is good, the operation is not easy, and the method can be implemented by cutting off a water source, draining and pressure-discharging the volute and the tail water pipe and building a rotating wheel maintenance platform. And because the maintenance needs, the wedge-shaped plate need dismantle repeatedly, repack, cause the waste in a large amount of manpower, material resources, time. In addition, a screw jack is also used for shaft fixing, but the adjusting precision is rough, the stress is not easy to control, and the effect is not ideal.

Chinese patent No. 2017203682529 discloses a dead axle device for overhauling a vertical axial flow Kaplan turbine, which relates to the field of mechanical positioning devices, comprising a left positioning device and a right positioning device, wherein the left positioning device and the right positioning device respectively comprise an arc copper tile device, an adjustable balance ejector rod device, a fixed balance ejector rod device and a chuck support device, the adjustable balance ejector rod device comprises a balance ejector rod, a spiral sleeve and a lead screw base, the lead screw base is arranged on the steel wall of a waterwheel chamber of the turbine, a lead screw is arranged in the lead screw base, the lead screw is connected with the balance ejector rod through the lead screw sleeve, the rotary sleeve is arranged on the lead screw for driving the lead screw to rotate to generate axial displacement, the fixed balance ejector rod device comprises a horizontal chuck base and a support positioned above the chuck base, the upper end of the support is provided with a sliding sleeve, the utility model is used for fixing the rotating shaft of the turbine, the novel shaft fixing device has the advantages of replacing the traditional shaft fixing method, being simple in structure, convenient and fast to operate, reliable to use, advanced in technology and low in investment cost.

We find in the use, it relies on the manpower to go on completely at the in-process of location the utility model discloses an use, lead to still having certain inconvenience in the positioning process, and lead to the accuracy of location efficiency extremely unsatisfactory, in addition, still can not carry out nimble regulation as required the dead axle point of main shaft.

Disclosure of Invention

An object of the utility model is to provide a dead axle device for vertical axle hydraulic turbine overhauls.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a dead axle device for vertical axle hydraulic turbine overhauls, but including adjusting positioning mechanism, but adjusting positioning mechanism includes vertical lift adjustment mechanism, horizontal two-way sharp adjustment mechanism and positioning mechanism, but horizontal two-way sharp adjustment mechanism installs the side at vertical lift adjustment mechanism's lift end through horizontal support arm, positioning mechanism comprises two locating component that set up in opposite directions, two locating component installs respectively in two-way horizontal sharp adjustment mechanism's regulation end, every locating component comprises the briquetting that openly is the arcwall face and the tight subassembly of elasticity top of locating in the briquetting, the front of briquetting is equipped with the column spacing spout, the tight subassembly of elasticity top comprises spacing slider, elastic component and kicking block, spacing slider slidable mounting is in the column spacing spout, the front of the spacing slider of elastic component horizontal installation, the ejecting block is arranged at the other end of the elastic component and extends out of the outer area of the columnar limiting sliding groove, and the front surface of the ejecting block is also an arc-shaped surface;

still include on-line control monitoring system, on-line control monitoring system comprises pressure sensor and controller, every pressure sensor is all installed to the bottom of the spacing spout of column, the back and the pressure sensor of spacing slider contact, pressure sensor, vertical lift adjustment mechanism and horizontal two-way sharp adjustment mechanism all with controller electric connection.

Preferably, the longitudinal lifting adjusting mechanism comprises a longitudinal support frame and a longitudinal lifting adjusting assembly, the longitudinal lifting adjusting assembly comprises a first lead screw motor, a longitudinal lead screw and a lifting sliding seat thereof, the first lead screw motor is installed on the longitudinal support frame, the longitudinal lead screw is vertically and rotatably installed in the longitudinal support frame, the end part of the longitudinal lead screw is connected with the driving end of the first lead screw motor, the lifting sliding seat is in threaded connection with the longitudinal lead screw and is in sliding fit with the longitudinal support frame, the end part of the transverse support arm is connected with the lifting sliding seat, and the first lead screw motor is electrically connected with the controller.

Preferably, the transverse bidirectional linear adjusting mechanism is composed of a transverse support frame and a transverse bidirectional linear adjusting assembly, the transverse bidirectional linear adjusting assembly comprises a screw motor II, a bidirectional screw and transverse support seats thereof, the bidirectional screw is horizontally and rotatably installed in the transverse support frame, the screw motor II is installed at the end part of the transverse support frame, the driving end of the screw motor II is connected with the end part of the bidirectional screw, the two transverse support seats are symmetrically and threadedly connected to the bidirectional screw and are in sliding fit with the transverse support frame, the transverse support seats correspond to pressing blocks one to one, the pressing blocks are connected to the side parts of the corresponding transverse support seats through supports, the outer wall of the transverse support frame is connected with the end part of the transverse support arm, and the screw motor II is electrically connected with the controller.

Preferably, the front of the pressing block and the front of the jacking block are both provided with rubber pads.

The utility model has the advantages that: when the utility model is used, the vertical strut is arranged on the end face of the speed regulating ring of the water turbine, the connecting line of the front central position of the two pressing blocks is vertically crossed with the axis of the main shaft, when the main shaft needs to be positioned, the first screw rod is firstly driven by the first screw rod motor to rotate, the vertical screw rod drives the lifting slide seat to do linear motion in the vertical direction when rotating, thereby adjusting the two pressing blocks to the two sides of the position where the main shaft needs to be fixed, then the second screw rod motor is started, the second screw rod motor drives the two-way screw rod to rotate by driving the two-way screw rod, thereby driving the two transverse supports to move oppositely, so that the pressing blocks move towards the direction close to the main shaft, when the pressing blocks move towards the direction of the main shaft, the top block can be in contact with the outer wall of the main shaft in advance, the elastic component is gradually compressed, the pressure value transmitted to, and finally, the pressure sensor is in close contact with the outer wall of the main shaft, and when the pressure value transmitted to the controller by the pressure sensor does not change, the controller controls the second screw motor to stop rotating, so that the two pressing blocks perform stable and accurate shaft fixing on the main shaft.

The utility model discloses simple structure, the position according to the main shaft dead axle that can be nimble carries out nimble adjustment to the position of briquetting, when the location, need not the manual dead axle that carries on of workman, has improved the efficiency of dead axle, through setting up on-line control monitoring system, can be high-efficient, accurate realization main shaft's dead axle operation, has improved the stability and the accuracy of dead axle, the follow-up better operation of overhauing of being convenient for.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings in the embodiments of the present invention are briefly described below.

Fig. 1 is a schematic structural diagram of a top view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic structural view of a front view of the present invention;

in the figure: the device comprises a 1-longitudinal support frame, a 2-screw motor I, a 3-transverse support arm, a 4-transverse support frame, a 5-screw motor II, a 6-bidirectional screw, a 7-transverse support, an 8-support, a 9-pressing block, a 10-columnar limiting sliding groove, an 11-pressure sensor, a 12-limiting sliding block, a 13-elastic component, a 14-top block, a 15-spindle, a 16-controller, a 17-longitudinal screw and an 18-lifting sliding seat.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1 to 3, the dead axle device for overhauling the vertical shaft water turbine comprises an adjustable positioning mechanism, wherein the adjustable positioning mechanism comprises a longitudinal lifting adjusting mechanism, a transverse bidirectional linear adjusting mechanism and a positioning mechanism thereof, the transverse bidirectional linear adjusting mechanism is arranged on the side of the lifting end of the longitudinal lifting adjusting mechanism through a transverse supporting arm 3, the positioning mechanism comprises two positioning components which are arranged oppositely, the two positioning components are respectively arranged at the adjusting end of the bidirectional transverse linear adjusting mechanism, each positioning component comprises a pressing block 9 with an arc-shaped front surface and an elastic jacking component arranged in the pressing block 9, a columnar limiting sliding groove 10 is arranged on the front surface of the pressing block 9, the elastic jacking component comprises a limiting sliding block 12, an elastic component 13 and a jacking block 14 thereof, the limiting sliding block 12 is slidably arranged in the columnar limiting sliding groove 10, the elastic component 13 is horizontally provided with the front surface of the limiting slide block 12, the top block 14 is arranged at the other end of the elastic component 13 and extends out of the outer area of the columnar limiting slide groove 10, and the front surface of the top block 14 is also an arc-shaped surface;

still include on-line control monitoring system, on-line control monitoring system comprises pressure sensor 11 and controller 16, every pressure sensor 11 is all installed to the bottom of column spacing spout 10, the back of spacing slider 12 contacts with pressure sensor 11, pressure sensor, vertical lift adjustment mechanism and horizontal two-way sharp adjustment mechanism all with controller 16 electric connection, control vertical lift adjustment mechanism and horizontal two-way sharp adjustment mechanism's operating mode through controller 16 to the pressure value that real-time supervision pressure sensor 11 transmitted.

In this embodiment, the longitudinal upward lifting adjustment mechanism includes a longitudinal support frame 1 and a longitudinal lifting adjustment assembly, the longitudinal lifting adjustment assembly includes a first lead screw motor 5, a longitudinal lead screw 17 and a lifting slide 18 thereof, the first lead screw motor 5 is installed on the longitudinal support frame 1, the longitudinal lead screw 17 is vertically and rotatably installed in the longitudinal support frame 1, an end portion of the longitudinal lead screw 17 is connected with a driving end of the first lead screw motor 5, the lifting slide 18 is in threaded connection with the longitudinal lead screw 17 and is in sliding fit with the longitudinal support frame 1, an end portion of the transverse support arm 3 is connected with the lifting slide 18, and the first lead screw motor 5 is electrically connected with the controller 16.

In this embodiment, the transverse bidirectional linear adjusting mechanism is composed of a transverse support frame 4 and a transverse bidirectional linear adjusting assembly thereof, the transverse bidirectional linear adjusting assembly includes a second lead screw motor 5, a bidirectional lead screw 6 and a transverse support 7 thereof, the bidirectional lead screw 6 is horizontally and rotatably installed in the transverse support frame 4, the second lead screw motor 5 is installed at the end of the transverse support frame 4, the driving end of the second lead screw motor is connected with the end of the bidirectional lead screw 6, the two transverse support frames 7 are symmetrically and threadedly connected on the bidirectional lead screw 6 and are in sliding fit with the transverse support frame 4, the transverse support frames 7 correspond to press blocks 9 one by one, the press blocks 9 are connected to the sides of the corresponding transverse support frames 7 through brackets 8, the outer wall of the transverse support frame 4 is connected with the end of the transverse support arm 3, and the second lead screw motor 5 is electrically.

In this embodiment, the front surface of the pressing block 9 and the front surface of the top block 14 are provided with rubber pads (not shown) to prevent damage to the outer wall of the main shaft 15.

When the utility model is used, the vertical strut 1 is arranged on the end face of the speed regulating ring of the water turbine, the connecting line of the front central positions of the two pressing blocks 9 is vertically crossed with the axis of the main shaft 15, when the main shaft 15 needs to be positioned, the first lead screw motor 2 drives the vertical lead screw 17 to rotate, the vertical lead screw 17 drives the lifting slide seat 18 to do linear motion in the vertical direction when rotating, thereby adjusting the two pressing blocks 9 to the two sides of the position of the main shaft 15 which needs to be fixed, then the second lead screw motor 5 is started, the second lead screw motor 5 drives the two-way lead screw 6 to rotate, thereby driving the two transverse support seats 7 to move oppositely, so that the pressing blocks 9 move towards the direction close to the main shaft 15, when the pressing blocks 9 move towards the direction of the main shaft 15, the top block 14 can be in advance contacted with the outer wall of the main shaft 15, the elastic component 13 is gradually compressed, the pressure value transmitted to the controller, at the moment, the two pressing blocks 9 continue to move in opposite directions and finally are in close contact with the outer wall of the main shaft 15, and when the pressure value transmitted to the controller 16 by the pressure sensor 11 does not change, the controller 16 controls the second screw motor 5 to stop rotating, which indicates that the two pressing blocks 9 have stably and accurately fixed the main shaft 15.

The utility model discloses simple structure, the position according to the 15 dead axles of main shaft that can be nimble carries out nimble adjustment to the position of briquetting 9, when the location, need not the manual dead axle that carries on of workman, has improved the efficiency of dead axle, through setting up on-line control monitoring system, can be high-efficient, accurate realization main shaft's dead axle operation, has improved the stability and the accuracy of dead axle, the follow-up better operation of overhauing of being convenient for.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The fixed shaft device for overhauling the vertical shaft water turbine is characterized by comprising an adjustable positioning mechanism, wherein the adjustable positioning mechanism comprises a longitudinal lifting adjusting mechanism, a transverse bidirectional linear adjusting mechanism and a positioning mechanism thereof, the transverse bidirectional linear adjusting mechanism is arranged on the side of the lifting end of the longitudinal lifting adjusting mechanism through a transverse supporting arm (3), the positioning mechanism comprises two positioning components which are arranged oppositely, the two positioning components are respectively arranged at the adjusting end of the bidirectional transverse linear adjusting mechanism, each positioning component comprises a pressing block (9) with an arc-shaped face on the front side and an elastic jacking component arranged in the pressing block (9), a columnar limiting sliding groove (10) is arranged on the front side of the pressing block (9), and the elastic jacking component comprises a limiting sliding block (12), an elastic component (13) and a jacking block (14) thereof, the limiting sliding block (12) is slidably mounted in the columnar limiting sliding groove (10), the front face of the limiting sliding block (12) is horizontally mounted on the elastic component (13), the ejector block (14) is mounted at the other end of the elastic component (13) and extends out of the outer area of the columnar limiting sliding groove (10), and the front face of the ejector block (14) is also an arc-shaped face;

still include on-line control monitoring system, on-line control monitoring system comprises pressure sensor (11) and controller (16), every pressure sensor (11) are all installed to the bottom of column spacing spout (10), the back and pressure sensor (11) of spacing slider (12) contact, pressure sensor (11), vertical lift adjustment mechanism and horizontal two-way sharp adjustment mechanism all with controller (16) electric connection.

2. The dead axle device for overhauling of the vertical shaft water turbine as claimed in claim 1, the longitudinal lifting adjusting mechanism comprises a longitudinal supporting frame (1) and a longitudinal lifting adjusting component, the longitudinal lifting adjusting component comprises a screw motor I (2), a longitudinal screw (17) and a lifting sliding seat (18) thereof, the first screw motor (2) is arranged on the longitudinal support frame (1), the longitudinal screw (17) is vertically and rotatably arranged in the longitudinal support frame (1), the end part of the longitudinal screw rod (17) is connected with the driving end of the screw rod motor I (2), the lifting slide seat (18) is in threaded connection with the longitudinal screw rod (17), and is in sliding fit with the longitudinal support frame (1), the end part of the transverse support arm (3) is connected with a lifting slide seat (18), the first lead screw motor (2) is electrically connected with the controller (16).

3. The dead axle device for overhauling of the vertical axis water turbine as claimed in claim 1, wherein the transverse bidirectional linear adjusting mechanism is composed of a transverse support frame (4) and a transverse bidirectional linear adjusting component thereof, the transverse bidirectional linear adjusting component comprises a screw motor II (5), a bidirectional screw (6) and a transverse support (7) thereof, the bidirectional screw (6) is horizontally and rotatably installed in the transverse support frame (4), the screw motor II (5) is installed at the end part of the transverse support frame (4), the driving end is connected with the end part of the bidirectional screw (6), the two transverse supports (7) are symmetrically and threadedly connected on the bidirectional screw (6) and are in sliding fit with the transverse support frame (4), the transverse supports (7) correspond to the pressing blocks (9) one by one, the pressing blocks (9) are connected to the side parts of the corresponding transverse supports (7) through brackets (8), the outer wall of the transverse support frame (4) is connected with the end part of the transverse support arm (3), and the second screw motor (5) is electrically connected with the controller (16).

4. The dead axle device for overhauling of the vertical shaft water turbine as claimed in claim 1, wherein the front surface of the pressing block (9) and the front surface of the top block (14) are provided with rubber pads.