CN211545683U - Lifting tool for 660MW unit feed pump seal cavity - Google Patents

Abstract

The utility model discloses a lifting device for 660MW unit feed pump seal chamber, include: a hollow long rod; a counterweight disposed on said elongated hollow pole proximate said first end; the sliding and locking moving lifting lug is arranged at the second end of the long hollow rod close to the second end; and the sealed cavity and the product compression ring are arranged on the sealed cavity hoisting part so as to hoist the sealed cavity and the product compression ring. The utility model discloses during the use, whole process simple to operate, atress are even, and it is steady to lift by crane, has both protected the main shaft can not by the fish tail, has guaranteed operating personnel's assembly safety again.

Description

Lifting tool for 660MW unit feed pump seal cavity

Technical Field

The utility model relates to a mounting and dismounting tool technical field of thermal power generating unit, in particular to a lifting device that is used for 660MW unit feed pump seal chamber.

Background

At present, in a 660MW thermal power generating unit feed pump, a sealing cavity of a transmission end and a sealing cavity of a free end are generally horizontally assembled, the weight of the sealing cavity is 65-80 kg, and an operator cannot carry the sealing cavity and can only hoist the sealing cavity by a travelling crane. Referring to fig. 2, the sealed cavity 20 needs to be installed inside the large end cover, which belongs to embedded installation, and cannot be directly hoisted in place in one step by using a traveling crane, so a tool with simple structure and reliable installation must be designed to install the sealed cavity 20.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the installation of the sealed chamber of 660MW unit feed pump exists and provide a lifting device for 660MW unit feed pump sealed chamber to satisfy the installation demand of product.

The utility model discloses the technical problem that will solve can realize through following technical scheme:

a lifting device for 660MW unit feed pump seal chamber, includes:

a hollow long rod;

a counterweight disposed on said elongated hollow pole proximate said first end;

the sliding and locking moving lifting lug is arranged at the second end of the long hollow rod close to the second end;

and the sealed cavity and the product compression ring are arranged on the sealed cavity hoisting part so as to hoist the sealed cavity and the product compression ring.

In a preferred embodiment of the present invention, the sealed cavity hoisting component comprises a hoisting adapter plate, a sealed cavity hoisting connecting plate and a hoisting positioning screw; the hoisting positioning screw is connected with the hoisting adapter plate, the hoisting adapter plate is connected with the sealing cavity hoisting connecting plate, and the hoisting adapter plate and the sealing cavity hoisting connecting plate are also connected with the sealing cavity and the product compression ring; and the hoisting positioning screw is connected with an inner hole at the second end of the long hollow rod.

In the utility model discloses a preferred embodiment sealed chamber lifts by crane on the connecting plate interference fit and installs two bolts, the bolt with sealed chamber is connected.

In a preferred embodiment of the present invention, the lifting adaptor plate and the sealing cavity are fan-shaped.

The utility model discloses a preferred embodiment set up a radial through-hole on the hoist and mount set screw the hollow pole is close to second end position and also has seted up two coaxial radial through-holes, works as radial through-hole on the hoist and mount set screw with the hollow pole is close to the coaxial radial through-hole of second end position and aligns the back, passes with a hexagon socket head cap screw the hollow pole be close to second end position coaxial radial through-hole with behind the radial through-hole on the hoist and mount set screw, it can with to spin up a nut hoist and mount set screw and hollow pole and be connected and carry out axial position to both and prescribe a limit to.

In a preferred embodiment of the present invention, the movable lifting lug is movable by using a hoop and can be locked at a position where the hollow long rod is close to the second end.

In a preferred embodiment of the present invention, a fixing ring is slidably and lockably mounted on the hollow long rod near the first end, and two coaxial radial through holes are formed in the hollow long rod; an elastic cylindrical pin is inserted into two coaxial radial through holes at the position, close to the first end, of the long hollow rod, and the elastic cylindrical pin is matched with the fixing ring to limit the counterweight at the position, close to the first end, of the long hollow rod in the same axial direction. In a preferred embodiment of the present invention, at least one fastening screw hole is radially formed in the fixing ring, a fastening screw is screwed into the fastening screw hole, and the fixing ring can be positioned on the hollow long rod by tightening the fastening screw.

In a preferred embodiment of the present invention, the counterweight is composed of a plurality of counterweights, the counterweights are provided with inner holes, and the inner holes of the counterweights are sleeved on the long hollow rod and are stacked together in the axial direction.

In a preferred embodiment of the present invention, a radial hanging threaded hole is provided on the outer circumference of each balancing weight, and another counterweight is additionally hung by a hanging screw in the radial hanging threaded hole.

Since the technical scheme as above is used, the utility model discloses during the use, assemble it with sealed chamber and product clamp ring, the equipment back that finishes, hang the lug with driving wire rope, through the lug, the staple bolt, hollow pole and sealed chamber hoisting accessory will seal chamber and product clamp ring and hoist, through the quantity of adding and subtracting the balancing weight and the quantity of other counter weights, hold the first end of hollow pole simultaneously and do a small amount of balance, make whole sealed chamber and product clamp ring keep the level, through the removal of driving lifting hook, slowly will seal in chamber and product clamp ring push into the big end cover cavity, the installation targets in place. The whole process is convenient to install, even in stress and stable in hoisting, the main shaft is protected from being scratched, and the assembly safety of operators is guaranteed.

Drawings

Fig. 1 is the utility model discloses a lifting device's for 660MW unit feed pump seal chamber structural schematic.

Figure 2 is the utility model discloses a lifting device hoist and mount sealed chamber and product clamp ring's schematic diagram for 660MW unit feed pump sealed chamber.

Detailed Description

For understanding the design features of the present invention, the purpose and effect are achieved, and the present invention is further illustrated by the following specific drawings.

Referring to fig. 1 and 2, the lifting tool for the sealing cavity of the water feeding pump of the 660MW unit comprises a fixing ring 2, a plurality of balancing weights 3 forming a balance weight, a long hollow rod 5, M36 lifting and positioning screws 6, a movable lifting lug 8, a sealing cavity lifting and connecting plate 14 and a lifting adapter plate 15. The fixing ring 2, the plurality of balancing weights 3, the M36 hoisting positioning screws 6, the lifting lugs 8, the sealing cavity hoisting connecting plate 14 and the hoisting adapter plate 15 are all subjected to blackening treatment to prevent the rusting of the fixing ring, the balancing weights 3 and the M36. The long hollow rod 5 is made of stainless steel pipe.

A radial hanging threaded hole 3a is formed in the outer circumference of each counterweight block 3, and another counterweight (not shown) is additionally hung through a hanging screw (not shown) screwed into the radial hanging threaded hole 3 a. Four fastening screw holes 2a are radially arranged on the fixing ring 2, a fastening screw 1 is screwed in each fastening screw hole 2a, and the fixing ring 2 can be positioned on the position, close to the first end 5a, of the long hollow rod 5 by screwing the fastening screws 1. Loosening the set screw 1 can make the fixed ring 2 slide on the long hollow rod 5 to adapt to the clump weights 3 with different quantities.

Two coaxial radial through holes 5b and 5c are formed in the long hollow rod 5 close to the first end 5 a; an elastic cylindrical pin 4 is inserted into the two radial through holes 5b and 5c, and the plurality of clump weights 3 are axially limited at the position of the long hollow rod 5 close to the first end 5a through the cooperation of the elastic cylindrical pin 4 and the fixed ring 2. The balancing weights 3 are provided with inner holes 3b, and the inner holes 3b of the balancing weights 3 are sleeved on the long hollow rod 5 and are axially overlapped together.

The movable lifting lug 8 is movably locked at the position of the hollow long rod 5 near the second end 5d by using a hoop 7. The anchor ear 7 is locked on the long hollow rod 5 by a pair of inner hexagon screws 7 a. Loosening a pair of inner hexagon screws 7a can move the hoop 7 and the movable lifting lug 8 on the long hollow rod 5, so that the movable lifting lug 8 is in a proper position.

Two coaxial radial through holes 5e and 5f are also formed in the position, close to the second end 5d, of the long hollow rod 5. Meanwhile, a radial through hole 6a is arranged on the hoisting positioning screw 6.

The sealed cavity hoisting connecting plate 14 and the hoisting adapter plate 15 are both in 60-degree fan-shaped plate structure, the sealed cavity hoisting connecting plate 14 is provided with two through holes and four threaded holes, and the hoisting adapter plate 15 is provided with 8 through holes and one threaded hole.

When the lifting device is used, the two bolts 13 are assembled in the two through holes of the sealed cavity lifting connecting plate 14 in an interference fit mode, then the four screws 12 penetrate through the four through holes in the lifting adapter plate 15 and are screwed into the four threaded holes in the sealed cavity lifting connecting plate 14, and the lifting adapter plate 15 and the sealed cavity lifting connecting plate 14 can be fixedly connected together after being screwed down. The M36 hoist setscrews 6 are then threaded into threaded holes in the hoist adapter plate 15. And then 4 socket head cap screws 11 are screwed into the threaded holes on the sealing cavity 20 and the product clamp ring 40 after penetrating through 4 through holes on the hoisting adapter plate 15, so that the sealing cavity 20 and the product clamp ring 40 can be installed on the hoisting adapter plate 15.

Then, an inner hole of the second end 5d of the long hollow rod 5 is sleeved on the M36 hoisting positioning screw 6, two radial through holes 5e and 5f at the position, close to the second end 5d, of the long hollow rod 5 are aligned with a radial through hole 6a on the hoisting positioning screw 6, and then an inner hexagon screw 9 penetrates through the radial through holes 5e and 5f and the radial through hole 6a and is locked by a nut 10, so that the hoisting positioning screw 6 can be connected with the second end 5d of the long hollow rod 5. The pair of allen screws 7a is then loosened to move the mobile ear 8 into position, and the pair of allen screws 7a is then tightened to position the mobile ear 8 adjacent the second end 5d of the rod 5.

Hang removal lug 8 with driving wire rope, insert two radial through- holes 5b, 5c with elasticity cylindric lock 4, then join in marriage 5 balancing weights 3, embolia solid fixed ring 2 and screw up four holding screw 1 for gu fixed ring 2 fixes in hollow stock 5 and is close to the position of first end 5a, through elasticity cylindric lock 4 with gu fixed ring 2 cooperation with 5 blocks of balancing weights 3 common axial restriction in hollow stock 5 be close to the position department of first end 5 a.

After finishing assembling, will with the driving the utility model discloses with sealed chamber 20 and product clamp ring 40 hoist together, hold the first end 5a of hollow pole 5 simultaneously and do a small amount of balances, make whole the utility model discloses and sealed chamber 20 and product clamp ring 40 keep the level, remove the driving lifting hook, slowly push big end cover cavity with sealed chamber 20, the installation targets in place. The whole process is convenient to install, even in stress and stable in hoisting, the main shaft is protected from being scratched, and the assembly safety of operators is guaranteed.

The basic principles, main features and advantages of the present invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and what is described in the specification are the principles of the present invention, and that the present invention can be further modified and advanced without departing from the spirit and scope of the present invention, and that these modifications and improvements fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A lifting device for 660MW unit feed pump seal chamber, which comprises:

a hollow long rod;

a counterweight disposed on said elongated hollow pole proximate said first end;

the sliding and locking moving lifting lug is arranged at the second end of the long hollow rod close to the second end;

and the sealed cavity and the product compression ring are arranged on the sealed cavity hoisting part so as to hoist the sealed cavity and the product compression ring.

2. The hoisting tool for the 660MW unit feed pump seal chamber as claimed in claim 1, wherein the seal chamber hoisting component comprises a hoisting adapter plate, a seal chamber hoisting connecting plate and a hoisting positioning screw; the hoisting positioning screw is connected with the hoisting adapter plate, the hoisting adapter plate is connected with the sealing cavity hoisting connecting plate, and the hoisting adapter plate and the sealing cavity hoisting connecting plate are also connected with the sealing cavity and the product compression ring; and the hoisting positioning screw is connected with an inner hole at the second end of the long hollow rod.

3. The hoisting tool for the sealed cavity of the water supply pump of the 660MW unit as claimed in claim 2, wherein two bolts are arranged on the hoisting connecting plate of the sealed cavity in an interference fit manner, and the bolts are connected with the sealed cavity.

4. The lifting tool for the 660MW unit feed pump seal cavity as claimed in claim 2, wherein the lifting adapter plate and the seal cavity are fan-shaped.

5. The hoisting tool for the 660MW unit feed pump seal cavity as claimed in claim 2, wherein the hoisting positioning screw is provided with a radial through hole, the long hollow rod is provided with two coaxial radial through holes near the second end, after the radial through hole on the hoisting positioning screw is aligned with the coaxial radial through hole on the long hollow rod near the second end, an inner hexagon screw is used to penetrate through the coaxial radial through hole on the long hollow rod near the second end and the radial through hole on the hoisting positioning screw, and a nut is screwed to connect the hoisting positioning screw with the long hollow rod and limit the axial positions of the two.

6. The lifting tool for the sealed cavity of the water pump of the 660MW unit as claimed in claim 1, wherein the movable lifting lug is movable by a hoop and lockable at the position of the long hollow rod near the second end.

7. The hoisting tool for the 660MW unit feed pump seal chamber as claimed in claim 1, wherein the long hollow rod is slidably and lockably mounted with a fixing ring near the first end and is provided with two coaxial radial through holes; an elastic cylindrical pin is inserted into two coaxial radial through holes at the position, close to the first end, of the long hollow rod, and the elastic cylindrical pin is matched with the fixing ring to limit the counterweight at the position, close to the first end, of the long hollow rod in the same axial direction.

8. The hoisting tool for the 660MW unit feed pump seal chamber as claimed in claim 7, wherein at least one set screw hole is formed in the radial direction of the fixing ring, a set screw is screwed in the set screw hole, and the fixing ring can be positioned on the long hollow rod by tightening the set screw.

9. The hoisting tool for the 660MW unit feed pump seal chamber as claimed in claim 1, wherein the counterweight is comprised of a plurality of counterweights, each of the plurality of counterweights having an inner hole, the inner holes of the plurality of counterweights being fitted over the long hollow pole so as to be axially stacked together.

10. The hoisting tool for the sealing cavity of the feed pump of the 660MW unit as claimed in claim 9, wherein a radial hanging threaded hole is formed on the outer circumference of each balancing weight, and another counterweight is additionally hung by a hanging screw screwed into the radial hanging threaded hole.

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