CN217458630U - Auxiliary dismounting device for water turbine - Google Patents

Abstract

The supplementary dismouting of hydraulic turbine is put down. The hydraulic jack is characterized in that the hydraulic jack is provided with a lifting mechanism, a lifting mechanism and a lifting mechanism, wherein the lifting mechanism is arranged on the lifting mechanism, and the lifting mechanism is arranged on the lifting mechanism. The utility model discloses the constitution includes: the base ring (8), the circumference of the bottom of the base ring is connected with at least three lifting screws (3) and at least three supporting screws (4) in a threaded manner, and the lifting screws and the supporting screws are distributed at intervals; each lifting screw is sleeved with a through hydraulic jack (1) and fixed on the lifting screw through a fixing nut (2); and each support screw is in threaded connection with a limit nut (7). The utility model is used for the supplementary dismantlement of hydraulic turbine.

Description

Auxiliary dismounting device for water turbine

Technical Field

The utility model relates to a supplementary dismouting of hydraulic turbine is put down.

Background

The lower-detachable water turbine can be repaired by detaching the quick-wear parts of the water turbine without detaching the generator, the water guide bearing, the main shaft seal and disturbing the positioning of the generator and the shafting, so that the workload of detaching and installing parts such as the generator which do not need to be repaired is avoided, and the time is greatly saved. The structure is widely applied to vertical mixed flow machines on sediment-laden rivers.

The hydraulic jack is characterized in that the hydraulic jack is provided with a lifting mechanism, a lifting mechanism and a lifting mechanism, wherein the lifting mechanism is arranged on the lifting mechanism, and the lifting mechanism is arranged on the lifting mechanism.

Disclosure of Invention

The utility model aims at solving the problem of above-mentioned existence, provide a dismouting is put under the hydraulic turbine is supplementary.

The above purpose is realized by the following technical scheme:

the utility model provides a supplementary dismouting of hydraulic turbine is put down which constitutes and includes: the base ring is characterized in that at least three lifting screws and at least three supporting screws are connected to the circumferential surface of the bottom of the base ring in a threaded manner, and the lifting screws and the supporting screws are distributed at intervals;

each lifting screw is sleeved with a through hydraulic jack and fixed on the lifting screw through a fixing nut;

and each support screw is in threaded connection with a limit nut.

The hydraulic turbine assists dismouting device down, the lifting screw rod be four, support screw rod be eight.

Has the advantages that:

1. the utility model discloses use a plurality of lifting screw on the seat ring to be vertical support point, utilize heart-penetrating hydraulic jack and many supporting screw on the lifting screw of cover to be vertical stress point, heart-penetrating hydraulic jack is used for going up and down, and the supporting screw is used for the atress firm, and alternate action makes the end ring dismantle stably, the security when guaranteeing to pull down simultaneously.

Description of the drawings:

FIG. 1 is a front view with the bottom ring removed;

FIG. 2 is a side view of the bottom ring shown disassembled;

FIG. 3 is a front view of the rotor shown disassembled;

FIG. 4 is a side view of the wheel shown disassembled;

in the figure: 1. a feed-through hydraulic jack; 2. fixing a nut; 3. a lifting screw; 4. a support screw; 5. hoisting screws; 6. a chain block; 7. a limit nut; 8. a seat ring; 9. a bottom ring; 10. a tray; 11. a rotating wheel; 12. a flat car.

The specific implementation mode is as follows:

example 1:

the utility model provides a supplementary dismouting of hydraulic turbine is put down which constitutes and includes: the base ring 8 is characterized in that at least three lifting screws 3 and at least three supporting screws 4 are connected to the circumferential surface of the bottom of the base ring in a threaded manner, and the lifting screws and the supporting screws are distributed at intervals;

each lifting screw is sleeved with a through hydraulic jack 1 and fixed on the lifting screw through a fixing nut 2;

and each support screw is in threaded connection with a limit nut 7.

Example 2:

the water turbine auxiliary dismounting device according to embodiment 1, wherein the number of the lifting screws is four, and the number of the supporting screws is eight.

The working principle is as follows:

a bottom ring dismounting step: firstly, removing 24 guide vane lower shaft sleeves and sealing elements, removing connecting bolts between a bottom ring and a seat ring, and screwing lifting screws into and fixing the lifting screws on the seat ring respectively;

and respectively sleeving the hydraulic jacks into the lifting screw rods, fixing the lifting screw rods on the lifting screw rods by using nuts, and then jacking the jacks to the full stroke, wherein the upper end surfaces of the jacks are in contact with the lower flange surface of the bottom ring. And removing the other connecting bolts of the bottom ring, and connecting a supporting screw rod on the bottom ring in a threaded manner.

And operating the hydraulic jack to slowly descend the bottom ring to the position of 0 stroke of the jack. And screwing down a limit nut on the support screw rod, fixing the bottom ring, and positioning the jack at the position of 150mm lower and fixing the jack by using the nut. The nut on the support screw is loosened and also lowered by 150 mm.

And repeating the step 2.3 eight times until the bottom ring is lowered to the position of 1200mm in the second step. And (3) respectively fixing lifting screws 5 on the seat ring and the bottom ring, pulling a hoist 6 with 4 hands to hang the bottom ring, and removing nuts on the hydraulic jack and the support screw rod. And slowly descending the bottom ring by using a chain block, and finally placing the bottom ring on a flat car.

And pulling the bottom ring of the flat car out to the position below the object hanging hole of the transportation channel by using a chain block, and hanging the bottom ring out to a workshop overhaul room.

And (3) disassembling the rotating wheel: four hoisting screws are screwed into the lower flange surface of the seat ring, and a chain block is hung; the tray is lifted into a rotating wheel lower dismantling gallery and conveyed to the lower part of the rotating wheel, the tray is lifted to the position 150mm away from the lower end of the rotating wheel by a chain block, and a support screw passes through a through hole of the tray and is screwed into the lower flange surface of the seat ring;

a lifting screw penetrates through a through hole of the tray and is screwed into the lower flange surface of the seat ring, a jack is arranged below the tray, the upper end of the jack is in contact with the tray, and the jack has a 0-stroke;

the jack is filled with pressure oil to jack the tray slowly to enable the tray to be in contact with the lower end face of the rotating wheel, and the nuts on the three supporting screw rods are screwed down to enable the tray and the rotating wheel not to be separated;

symmetrically removing the connecting bolts between the rotating wheels and the main shaft by using a bolt hydraulic stretcher, and reducing the nuts on the supporting screw rods by 150 mm;

slowly discharging oil from the jack, slowly lowering the tray and the rotating wheel to the 0 stroke position of the jack, screwing down the limit nut on the supporting screw rod, fixing the rotating wheel, withdrawing the jack by 150mm and reaching the maximum stroke, fixing the jack in place by using the fixing nut, loosening the limit nut on the supporting screw rod, and lowering by 150 mm;

and (5) repeating the step 3.5, slowly descending the rotating wheel to a position 1200mm below the flange surface of the seat ring after six times, and pulling the gourd hook by four hands to hang the tray.

After the jack and the nut are removed, the rotating wheel and the lower part of the tray are slowly placed on the flat car by the chain block.

Claims (2)

1. The utility model provides a supplementary dismouting of hydraulic turbine is put down which constitutes and includes: seat ring, characterized by: the circumferential surface of the bottom of the seat ring is in threaded connection with at least three lifting screws and at least three supporting screws, and the lifting screws and the supporting screws are distributed at intervals;

each lifting screw is sleeved with a through hydraulic jack and fixed on the lifting screw through a fixing nut;

and each support screw is in threaded connection with a limit nut.

2. The auxiliary drop down device for a water turbine as claimed in claim 1, wherein: the number of the lifting screws is four, and the number of the supporting screws is eight.

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