CN107803645A - Horizontal Double-casing multi-stage centrifugal pump disassembling fixture - Google Patents

Abstract

The invention discloses a disassembly tool for a horizontal double-casing multistage centrifugal pump, which includes a lifting part, a pulley part, a guide rail part, a guide sleeve part and a roller part, wherein there are two groups of guide rail parts, which are symmetrical along the axis of the pump casing Distribution, one end of the guide rail part is connected and fixed to the base supporting the pump casing at the liquid outlet end of the centrifugal pump and is provided with an adjustment mechanism for adjusting the height of the track, and the other end is supported and fixed by the lifting part; there are two sets of pulley parts, which are respectively set in the inner core The left and right sides of the liquid outlet end of the component form a rolling fit with the guide rail part; one end of the guide sleeve part is fixedly connected with the inner core part of the liquid inlet end and the pump shaft, and the other end is supported by a roller part to form a rolling fit; the roller part and the liquid inlet The port end is permanently attached to the pump housing. The invention is convenient to use, reliable in effect, and can quickly and safely realize the replacement of the inner core parts of the horizontal double-casing multistage centrifugal pump.

Description

Horizontal double casing multistage centrifugal pump disassembly tooling

technical field

The invention belongs to the field of centrifugal pump assembly equipment, and in particular relates to a disassembly tool for a horizontal double-casing multistage centrifugal pump.

Background technique

Double-casing multistage centrifugal pumps are the most important moving equipment in the petroleum, chemical, and power station industries. They are expensive, and once they are damaged, they will have a great impact on production and power generation. In order to ensure the normal operation of the pumps, the industry requires that the The four-ton, two-meter-long inner core part is disassembled from the shell, and then quickly replaced with a new inner core part. There are many pipelines and other equipment around the multistage centrifugal pump. The space is too small to use machinery such as cranes and forklifts. At the same time, the casing of the centrifugal pump is connected to the pipelines of the system device, so the centrifugal pump cannot be removed as a whole, and it can only be easily damaged. The inner core parts are repaired. Therefore, only horizontal installation can be used at the site. At present, most of the inner core disassembly of horizontal double-casing multistage centrifugal pumps is supported by wooden squares, and temporary tripods are built. Manual lifting tools are used for manual construction, which is labor-intensive and labor-intensive. The risk is high, the accuracy of disassembly and installation is low, and the long time will have a great impact on production. Once the tripod is not firm and collapses, it will collide with the nearby pipelines that transport dangerous media, causing accidents.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned defects, and provide a disassembly tool for a horizontal double-shell multistage centrifugal pump, which is easy to use, reliable in effect, and can quickly and safely realize the replacement of the inner core parts of the horizontal double-shell multistage centrifugal pump. .

The present invention adopts the following technical solutions: disassembly tooling for a horizontal double-casing multistage centrifugal pump, including lifting parts, pulley parts, guide rail parts, guide sleeve parts and roller parts, wherein there are two groups of guide rail parts, which are symmetrically distributed along the axis of the pump casing , one end of the guide rail part is connected and fixed with the base supporting the pump casing at the outlet end of the centrifugal pump and is provided with an adjustment mechanism for adjusting the height of the track, and the other end is supported and fixed by the lifting part; there are two sets of pulley parts, which are respectively set in the inner core part The left and right sides of the liquid outlet end form a rolling fit with the guide rail parts; one end of the guide sleeve part is fixedly connected with the inner core part of the liquid inlet end and the pump shaft, and the other end is supported by a roller part to form a rolling fit; the roller part and the liquid inlet The end pump casing is fixedly connected.

As a preferred manner, the guide sleeve part is assembled from a plurality of C-shaped guide sleeves, and the C-shaped guide sleeves are positioned by matching notches and fixedly connected by bolts.

As a preferred method, a fixed frame is provided on the first C-shaped guide sleeve, the fixed frame is composed of a fixed sleeve and a pump shaft fixing plate, the fixed sleeve is fixed to the inner core part, the pump shaft passes through the center hole of the fixed sleeve and the pump The shaft fixing plate is fixed.

As a preferred manner, the pulley component includes a connector, a column, a bearing and a bearing bracket, the bearing is mounted on the bearing bracket, the lower end of the column is fixedly connected to the bearing bracket, and the column passes through the mounting hole on the connector to connect with the connector, An adjusting nut is arranged on the column below the connector, and a locking nut is arranged above, the inner end of the connection is fixedly connected with the inner core part, and the outer end is provided with a handle. More preferably, a square limiting block is provided on the column, a square groove is arranged on the connecting piece, and the square limiting block is placed in the square groove.

As a preferred method, the roller component includes a roller, a roller shaft, a roller bearing, a roller bracket, a positioning sleeve and an adjusting bolt, the roller is connected to the roller shaft through the roller bearing, and there are two positioning sleeves, which are symmetrically fixed on the roller bracket On the top, the adjusting bolt extends from the lower end of the positioning sleeve into the positioning sleeve and conflicts with the positioning sections at both ends of the roller shaft. The tight section is provided with a roller limit nut and a roller shaft locking nut respectively. More preferably, the two ends of the roller are mirrored tapered wheels.

As a preferred method, the lifting part includes a support, a lead screw, a guide sleeve, a handle and a sliding key, a guide sleeve is arranged on the top of the support, the lead screw is installed in the guide sleeve, and a pair of The lead screw is limited by a sliding key, the top of the lead screw is fixed to the guide rail component, and a handle is arranged outside the guide sleeve.

The pulley part of the present invention is fixed to the liquid outlet end of the inner core part and rolls and fits with the guide rail parts symmetrically distributed along the axis of the pump casing. One end of the guide sleeve part is fixedly connected with the liquid inlet end of the inner core part and the pump shaft, and the other end is supported by the roller part. , when the inner core part is moved along the axis direction, the pulley part and the roller part support the inner core part, and the pulley part drives the inner core part to move on the track part so that the inner core part can be moved out of the pump casing or moved out of the pump casing It is transported from the outside to the casing to achieve the purpose of fast, accurate and safe disassembly and assembly of the inner core components of the horizontal double casing multistage centrifugal pump.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a structural schematic diagram of the lifting component.

Fig. 4 is a structural schematic diagram of the joint between the guide sleeve part and the inner core part.

Fig. 5 is a structural schematic diagram of the joint between the roller component and the guide sleeve.

In the figure, 10 inner core part, 20 pump casing, 201 liquid outlet, 202 liquid inlet, 30 base, 40 pulley part, 50 lifting part, 60 guide rail part, 602 track, 601 adjusting bolt, 70 guide sleeve part, 80 roller parts.

40 pulley components: 401 connectors, 402 handles, 403 square limit blocks, 404 columns, 405 bearings, 406 bearing brackets, 407 adjusting nuts, 408 locking nuts, 409 bolts.

50 lifting components: 501 support, 502 lead screw, 503 feather key, 504 support sleeve, 505 guide sleeve, 506 fixed connecting plate, 507,509 bolt, 508 handle, 510 gland.

70 guide sleeve parts, 701 first section C-shaped guide sleeve, 702 C-shaped guide sleeve, 703 fixed sleeve, 704 pump shaft fixing plate, 705, 707 bolts, 706 guide plate.

80 roller components: 801 roller, 802 roller shaft, 803 roller bearing, 804 lock nut, 805 positioning sleeve, 806 roller shaft locking section, 807 positioning section, 808 roller limit nut, 809 roller limit section, 810 roller stand,

811 roller shaft lock nut, 812 adjusting bolt.

Detailed ways

As shown in Figure 1, the horizontal double-casing multistage centrifugal pump mainly includes a pump housing 20 and an inner core part 10, the pump housing 20 is provided with a liquid inlet 202 and a liquid outlet 201, and the base 30 is opposite to the pump housing. 20 is its supporting function, the pump casing 20 remains stationary during the maintenance of the inner core part 10, and the inner core part 10 is moved out and into the pump casing 20 from the liquid outlet end of the casing (ie, the left side in the figure). Fig. 1 shows the state of the inner core part 10 outside the pump casing 20. The disassembly tooling of the horizontal double casing multistage centrifugal pump of the present invention mainly includes a lifting part 50, a pulley part 40, a guide rail part 60, a guide sleeve part 70 and a roller. Components 80, wherein there are two groups of guide rail components 60, symmetrically distributed along the axis of the pump housing 20, one end of the guide rail components 60 is connected and fixed to the base 30 supporting the pump housing 20 at the liquid outlet 201 end of the centrifugal pump, and on the base of the guide rail components 60 The connecting end is provided with an adjustment mechanism for adjusting the height of the track 602, and the other end is supported and fixed by the lifting member 50. In this embodiment, the track 602 of the track component 60 is made of square steel pipes, and an adjusting bolt 601 is arranged at the connecting end of the track 602 and the base 30. , adjust the height of the track 602 together with the lifting part 50; the pulley part 40 has two groups, which are respectively arranged on the left and right sides of the liquid outlet 201 end of the inner core part 10 and form a rolling fit with the guide rail part 60; one end of the guide sleeve part 70 It is fixedly connected with the inner core part 10 at the end of the liquid inlet 202 and the pump shaft 101 , and the other end is supported by a roller part 80 to form a rolling fit; the roller part 80 is fixedly connected with the pump housing 20 at the end of the liquid inlet 202 .

As shown in Figure 3, the lifting part 50 that supports the guide rail part 60 mainly includes a support 501, a screw 502, a guide sleeve 505, a handle and a sliding key 503, and a support sleeve 504 is fixed on the top of the support 501, and a gland 510 Fix on the support sleeve 504 with bolts 509, the guide sleeve 505 cooperates with the gland 510, the gland 510 supports the guide sleeve 505, the lead screw 502 is installed in the guide sleeve 505, and a pair of The lead screw 502 is limited by the sliding key 503 , the top of the lead screw 502 is connected with the fixed connecting plate 506 , the fixed connecting plate 506 is fixed with the guide rail member 60 by the bolt 507 , and the guide sleeve 505 is provided with a handle 508 . When in use, the support 501 is placed on the ground, and the rotating handle 508 drives the guide sleeve 505 to rotate. The lead screw 502 is restricted by the sliding key 503 and cannot rotate but can only move up and down, so as to achieve the purpose of adjusting the height of the guide rail component 60 . In this embodiment, the lifting part 50 has a simple structure, convenient operation, quick installation, and is applicable to various geological grounds.

As shown in Figure 4, the guide sleeve part 70 in this embodiment is assembled from a plurality of C-shaped guide sleeves 701, 702, and the C-shaped guide sleeves 702 are positioned with matching notches, that is, at the rear end of the C-shaped guide sleeve 702 When the groove is formed, a protrusion is formed at the front end of the C-shaped guide sleeve 702 that is docked with it. The groove cooperates with the protrusion to achieve the purpose of fast positioning, and the C-shaped guide sleeve 702 is fixedly connected with bolts. There is a fixed frame on the first C-shaped guide sleeve 701, the fixed frame is composed of a fixed sleeve 703 and a pump shaft fixing plate 704, the fixed sleeve 703 is fixed with the inner core part 10, the pump shaft 101 passes through the center hole of the fixed sleeve 703 and the pump The shaft fixing plate 704 is fixed by bolts 707 . Since the guide sleeve part 70 is connected with the inner core part 10 and the pump shaft 101 at the same time, it is ensured that the parts on the pump shaft 101 and the inner core part 10 are kept relatively fixed without collision during the transfer and pump assembly process. The guide sleeve part 70 is assembled from a plurality of short C-shaped guide sleeves 702 into a long guide sleeve part 70, which can be used in a narrow space and can be assembled and used flexibly. In order to ensure the centering during installation, a guide plate 706 is provided at the liquid outlet end of the pump housing 20 , and the guide plate 706 is connected to the pump housing 20 with bolts 705 .

As shown in Figure 2, the pulley assembly 40 includes a connector 401, a column 404, a bearing 405 and a bearing bracket 406, the bearing 405 is installed on the bearing bracket 406, the lower end of the column 404 is fixedly connected with the bearing bracket 406, and the column 404 passes through the connector 401 The mounting hole on the top is connected with the connecting piece 401 , an adjusting nut 407 is arranged on the column 404 below the connecting piece 401 , and a locking nut 408 is arranged above it. The inner end of the connecting piece 401 is fixedly connected to the inner core part 10 through bolts 409 , and the outer end is provided with a handle 402 . A square limiting block 403 is provided on the column 404, a square groove is arranged on the connecting piece 401, and the square limiting block 403 is placed in the square groove. After loosening the locking nut 408, adjust the height of the connecting piece 401 up and down through the adjusting nut 407. Since the square limit block 403 cooperates with the cube groove, the column 404 will not rotate in the circumferential direction, so that its moving track is consistent with that of the pump housing 20. The centerlines are parallel to prevent the inner core component 10 from deviating from the guide rail component 60 when moving, and at the same time, parts collision will not occur. The bearing 405 rolls on the track part, and the handle 402 can be pulled manually or by twisting force to push the inner core part 10 to move horizontally. Adjusting bolts are arranged below the track components at the end of the pump housing 20 to adjust the height of the track components.

As shown in Figure 5, the roller component 80 has a supporting effect on the guide sleeve component 70. The roller component 80 includes a roller 801, a roller shaft 802, a roller bearing 803, a roller bracket 810, a positioning sleeve 805 and an adjustment bolt 812, and the roller bracket 810 is fixed. On the pump casing 20, the roller 801 is connected to the roller shaft 802 through the roller bearing 803, and there are two positioning sleeves 805, which are symmetrically fixed on the roller bracket 810, and the adjusting bolt 812 is inserted into the positioning sleeve 805 and the The positioning section 807 at both ends of the roller shaft 802 is in conflict, and a lock nut 804 is arranged at the lower end of the positioning sleeve 805. The inner side of the positioning section 807 of the roller shaft 802 is the roller limiting section 809, and the outer side is the roller shaft locking section 806, and the roller limiting section 809 and the roller shaft locking section 806 are provided with a roller stop nut 808 and a roller shaft locking nut 811 respectively. In this embodiment, the two ends of the roller 801 are mirrored tapered wheels, the guide sleeve part 70 and the roller 801 are in point contact, and the coefficient of friction is small, which is convenient for pushing the inner core part 10 . The horizontal height of the roller shaft 802 can be adjusted by adjusting the bolt 812. Adjusting the position where the roller shaft lock nut 811 cooperates with the roller shaft 802 can realize the left and right adjustment of the roller 801, achieve the purpose of centering the roller 801, and ensure The axial direction of the inner core part 10 coincides with that of the pump housing 20 .

When disassembling the inner core part 10, at first the roller part 80 is fixed on the pump casing 20 with bolts, the guide sleeve part 70 is fixed on the inner core part 10 with bolts, the guide rail part 60 is fixed on the base 30 with bolts, and the pulley part 40 Be fixed on the inner core part 10 with bolts, and the lifting part 50 is fixed with the guide rail part 60 with bolts, and adjust the position after the whole frock is installed. Start to disassemble the connecting bolts between the inner core part 10 and the pump housing 20, and use the handle 402 to pull the pulley part 40 to move on the guide rail part 60 so that the inner core part 10 moves outward horizontally. At this time, the inner core part 10 rests on the pulley part 40 and the roller Part 80 supports. The inner core member 10 slides on the rail member 60 completely out of its cramped, unsafe working environment. When replacing the new inner core part 10, the roller part 80, the guide sleeve part 70, the guide rail part 60, the pulley part 40 and the lifting part 50

The axis direction of the inner core part 10 and the pump casing 20 coincides to meet the centering requirements for the installation of the inner core part 10 and the pump casing 20

The new inner core part 10 is transported to the guide rail part 60, and its liquid inlet 202 end is connected and fixed with the guide sleeve part 70, and one end of the guide sleeve part 70 is supported by the roller part 80, and the height and the left and right position of the roller 801 on the roller part 80 are adjusted , adjust the height of the pulley part 40 on the track 602 to ensure the centering of the inner core part 10 and the pump casing 20, and push the movable pulley part 40 to move on the guide rail part 60 through the handle 402 so that the inner core part 10 is horizontal to the pump casing 20 move within. The present invention has a reasonable structural design, can be adjusted and positioned during disassembly and assembly, and the inner core part 10 can be removed or assembled in the pump housing 20 quickly and accurately.

Claims (8)

1. horizontal Double-casing multi-stage centrifugal pump disassembling fixture, it is characterized in that the frock includes, including Lift Part, sheave portion Part, track segment, guide sleeves part and rotor block, wherein track segment have two groups, are distributed along pump case axisymmetrical, guide rail One end of part supports the base of pump case to be connected and is provided with the regulation machine of adjustment orbit altitude with centrifugal pump outlet end Structure, the other end are supported by Lift Part and fixed；Pulley part has two groups, is separately positioned on the left and right two of core member outlet end Side simultaneously forms rolling cooperation with track segment；Guide sleeves part one end is fixedly connected with inlet end core member and pump shaft, separately One end is supported and formed with rolling from rotor block；Rotor block is fixedly connected with inlet end pump case.

2. horizontal Double-casing multi-stage centrifugal pump disassembling fixture according to claim 1, it is characterized in that the guide sleeves part Assembled by multiple C-shaped guide pin bushings, with coordinating seam to position between C-shaped guide pin bushing, bolt is fixedly connected.

3. horizontal Double-casing multi-stage centrifugal pump disassembling fixture according to claim 2, it is characterized in that on head section c-type guide pin bushings Provided with fixed mount, fixed mount is made up of fixed cover and pump shaft fixed plate, and fixes sleeve is fixed with core member, and pump shaft, which passes through, to be fixed Set centre bore is fixed with pump shaft fixed plate.

4. the horizontal Double-casing multi-stage centrifugal pump disassembling fixture according to claim any one of 1-3, it is characterized in that the cunning Wheel component includes connector, column, bearing and the support of bearing, and bearing is arranged on the support of bearing, column lower end and the support of bearing It is fixedly connected, column is connected through the mounting hole on connector with connector, and regulation spiral shell is provided with the column below connector Mother, top are provided with locking nut, are fixedly connected in connection medial extremity with core member, outboard end is provided with handle.

5. horizontal Double-casing multi-stage centrifugal pump disassembling fixture according to claim 4, it is characterized in that being provided with side on column Shape limited block, square groove is provided with connector, square limited block is placed in square groove.

6. the horizontal Double-casing multi-stage centrifugal pump disassembling fixture according to claim any one of 1-3, it is characterized in that the rolling Wheel component include roller, roller shaft, wheel roller bearing hold, rolling wheel support, positioning sleeve and adjustment bolt, roller is through roller bearing and roller Axis connection, positioning are cased with two, are symmetrically fixed on rolling wheel support, and adjustment bolt stretches into positioning sleeve and rolling by the lower end of positioning sleeve The positioning section at wheel shaft both ends is inconsistent, is spacing section of roller on the inside of roller shaft positioning section, and outside is roller shaft locking section, and roller limits Position section and roller shaft locking section set roller stop nut and roller axle lock nut respectively.

7. horizontal Double-casing multi-stage centrifugal pump disassembling fixture according to claim 6, it is characterized in that the both ends of the roller For mirror image, taper cone pulley is set.

8. the horizontal Double-casing multi-stage centrifugal pump disassembling fixture according to claim any one of 1-3, it is characterized in that the liter Drop part includes bearing, leading screw, guide pin bushing, handle and feather key, and holder top is provided with guide pin bushing, and leading screw is arranged in guide pin bushing, The lower section of guide pin bushing is provided with the feather key to screw rod limiting, and leading screw top is fixed with track segment, and handle is provided with outside guide pin bushing.