阅读说明：本技术 大型离心泵性能测试出水管道移动机构 (Moving mechanism for water outlet pipeline of large centrifugal pump performance test ) 是由 王劲松 刘小兰 杨金国 于 2021-09-03 设计创作，主要内容包括：本发明公开了一种大型离心泵性能测试出水管道移动机构,其包括支撑框架组件、行走系统、轴向托起组件、径向托起组件、轴向推动组件、出水口法兰面安装提升组件；所述支撑框架组件上布置有两组行走系统,每组行走系统中设有一个主动行走机构和一个从动行走机构；在所述主动行走机构和从动行走机构上分别布置一个轴向托起组件；每组行车系统上方布置一个径向托起组件,每个径向托起组件上方布置一个轴向推动组件；本发明所述机构还设有两组出水口法兰面安装提升组件,它们分别与测试用的大出水管和小出水管相匹配的。本发明解决了在移动大型离心泵性能测试用出水管道时存在的管道平衡起吊点难找、移动距离难以精准控制等问题。(The invention discloses a water outlet pipeline moving mechanism for performance test of a large centrifugal pump, which comprises a supporting frame assembly, a traveling system, an axial supporting assembly, a radial supporting assembly, an axial pushing assembly and a water outlet flange surface mounting and lifting assembly, wherein the supporting frame assembly is arranged on the supporting frame assembly; two groups of walking systems are arranged on the supporting frame assembly, and a driving walking mechanism and a driven walking mechanism are arranged in each group of walking systems; an axial lifting assembly is respectively arranged on the driving travelling mechanism and the driven travelling mechanism; a radial supporting assembly is arranged above each group of travelling system, and an axial pushing assembly is arranged above each radial supporting assembly; the mechanism is also provided with two groups of water outlet flange surface mounting and lifting components which are respectively matched with a large water outlet pipe and a small water outlet pipe for testing. The invention solves the problems that the balance lifting point of the pipeline is difficult to find, the moving distance is difficult to accurately control and the like when the water outlet pipeline for the performance test of the large centrifugal pump is moved.)

1. The utility model provides a large-scale centrifugal pump capability test outlet conduit moving mechanism which characterized in that: the device comprises a supporting frame assembly, a walking system, an axial supporting assembly, a radial supporting assembly, an axial pushing assembly and a water outlet flange surface mounting and lifting assembly;

the supporting frame assembly comprises two cross beams (1) which are parallel to each other, two longitudinal beams (2) which are parallel to each other are connected between the two cross beams (1), a plurality of auxiliary longitudinal beams (3) are arranged between the two longitudinal beams (2), and two ends of each auxiliary longitudinal beam (3) are respectively connected with the cross beams (1); the lower parts of the cross beam (1), the longitudinal beam (2) and the auxiliary longitudinal beam (3) are respectively and uniformly distributed with more than two upright posts (4);

two groups of traveling systems are arranged on the supporting frame, a pair of guide rails (5) is arranged in each group of traveling systems, the pair of guide rails (5) are transversely arranged on the longitudinal beam (2) and the auxiliary longitudinal beam (3), a plurality of guide rail beams (6) are arranged right below each guide rail (5), and two ends of each guide rail beam (6) are respectively connected with the longitudinal beam (2) or the auxiliary longitudinal beam (3); the pair of guide rails (5) is provided with a driving travelling mechanism and a driven travelling mechanism; the driving travelling mechanism comprises a pair of travelling wheels (7) connected through a connecting shaft I (8), a speed reducer (10) is connected onto the connecting shaft I (8), a speed reducing motor (9) is arranged on one side of the connecting shaft I (8), and a crankshaft of the speed reducing motor (9) is connected with the input end of the speed reducer (10); the driven travelling mechanism comprises a pair of travelling wheels (7) connected through a connecting shaft II (11); each walking wheel (7) is correspondingly provided with a stool support, the stool support is provided with two straight plates (12), the two straight plates (12) are respectively positioned on two sides of the walking wheel (7) and are connected with a connecting shaft I (8) or a connecting shaft II (11) through bearings, and the tops of the two straight plates (12) are connected through a flat plate (13);

the driving travelling mechanism and the driven travelling mechanism are respectively provided with an axial supporting assembly, the axial supporting assembly is provided with a connecting beam I (14), two ends of the connecting beam I (14) are respectively connected with a flat plate (13) of a stool support on the travelling wheels (7), the upper part of the connecting beam I (14) is fixedly connected with an axial supporting jack (15), and the upper part of the axial supporting jack (15) is fixedly provided with a load-carrying roller trolley (16);

a connecting beam II (17) is arranged above the travelling wheels (7) on the same guide rail (5), a radial supporting jack (18) is fixedly mounted on a stool bracket of each travelling wheel (7), the top of the radial supporting jack (18) is connected with the corresponding connecting beam II (17), and the lower part of the connecting beam I (14) is connected with the speed reducer (10);

a radial supporting component is arranged above each group of travelling crane system, the radial supporting component comprises two connecting beams III (19) which are longitudinally arranged, the two connecting beams III (19) are positioned above two connecting beams II (17) in the same travelling crane system, a plurality of connecting beams IV (20) are longitudinally horizontally arranged between the two connecting beams III (19), the connecting beams IV (20) span two groups of travelling systems, the lower parts of the connecting beams IV (20) are connected with the connecting beams II (17), the lower part of one end of each connecting beam III (19) is connected with the connecting beams II (17), the lower parts of the other end of each connecting beam III (19) and the lower parts of the two ends of each connecting beam IV (20) are respectively connected with a support leg (21), a long connecting plate (22) is arranged below each support leg (21), each support leg (21) is connected with the long connecting plate (22), and the front end of the connecting beam III (19) on one side of each support leg (21) is connected with a hydraulic cylinder big-end support lug (23), a hydraulic cylinder big end support lug (24) is arranged on the inner side of the hydraulic cylinder big end support lug upright post (23); the long connecting plate (22) is fixedly connected with the cross beam (1) through a U-shaped hoop (25);

an axial pushing assembly is arranged above each radial supporting assembly and comprises a long plate (26), the long plate (26) spans all the connecting beams IV (20), fixing plates (27) are arranged at the lower parts of two ends of the long plate (26), the fixing plates (27) are located below the connecting beams IV (20), and the fixing plates (27) are connected with the long plate (26) through bolts; the long plate (26) is provided with arc connecting blocks (28), two sides of the long plate (26) are respectively provided with a small flat plate (29), the small flat plates (29) are placed on the opposite load-bearing roller trolleys (16), two arc connecting plates (30) are vertically arranged on the small flat plates (29), and the tops of the two arc connecting plates (30) are connected with a clamp fixing plate (31); an arc big tray (32) is arranged between one side of the long plate (26) and the small flat plate (29), an arc small tray (33) is arranged between the other side of the long plate and the small flat plate (29), two sides of the arc big tray (32) are fixedly connected with the arc connecting block (28) and the opposite arc connecting plate (30) respectively, two sides of the arc small tray (33) are fixedly connected with the arc connecting block (28) and the opposite arc connecting plate (30) respectively, a plurality of matched clamps (34) are arranged above the arc big tray (32) and the arc small tray (33), one end of each clamp (34) is connected with the top of the arc connecting block (28) through a bolt, and the other end of each clamp (34) is connected with the clamp fixing plate (31) through a bolt; the circular arc large trays (32) of each axial pushing assembly are positioned on the same side; one end of the small flat plate (29) is provided with a hydraulic cylinder (35), the bottom of the hydraulic cylinder (35) is fixedly connected with a hydraulic cylinder large-end support lug (24), one end, close to the hydraulic cylinder (35), of the small flat plate (29) is fixedly provided with a hydraulic cylinder small-end support lug (36), and the top of the hydraulic cylinder (35) is fixedly connected with the hydraulic cylinder small-end support lug (36);

the large centrifugal pump performance test water outlet pipeline moving mechanism is provided with two groups of water outlet flange surface mounting and lifting components which are respectively matched with a large water outlet pipe and a small water outlet pipe for test, each water outlet flange surface mounting and lifting component comprises a water outlet elbow (37) and a water outlet connecting flange (38), one end of each water outlet elbow (37) is connected with the corresponding water outlet pipe (39) for test, the other end of each water outlet elbow (37) is connected with a rubber soft joint (40), one end of each water outlet connecting flange (38) is connected with a water outlet of a centrifugal pump, the other end of each water outlet connecting flange (38) is connected with a matched water pipe (41), and each water pipe (41) is connected with the corresponding rubber soft joint (40); the utility model discloses a water outlet bend (37) is close to the soft joint of rubber (40) one end both sides and is equipped with one respectively and goes up journal stirrup (42) the one end both sides that water pipe (41) are close to delivery port flange (38) are equipped with one down journal stirrup (43) respectively, down journal stirrup (43) and last journal stirrup (42) one-to-one, the both sides of water pipe (41) are equipped with one chain block (44) respectively, the top and the last journal stirrup (42) of chain block (44) are connected, hoisting chain (55) and the lower journal stirrup (43) of chain block (44) are connected.

2. The large centrifugal pump performance test outlet pipe moving mechanism of claim 1, wherein: a diagonal brace (45) is connected between each upright post (4) and the cross beam (1), a diagonal brace (45) is connected between each upright post (4) and the longitudinal beam (2), a diagonal brace (45) is connected between each upright post (4) and the auxiliary longitudinal beam (3), and a diagonal brace (45) is connected between the side face of each support leg (21) and the connecting beam III (19) or the connecting beam IV (20).

3. The large centrifugal pump performance test outlet pipe moving mechanism of claim 1, wherein: the pair of guide rails (5) are pressed on the longitudinal beam (2) or the auxiliary longitudinal beam (3) through a plurality of guide rail pressing plates (46), and the guide rail pressing plates (46) are fastened with the longitudinal beam (2) or the auxiliary longitudinal beam (3) through bolts.

4. The large centrifugal pump performance test outlet pipe moving mechanism of claim 1, wherein: an anti-collision assembly is respectively arranged on two sides of each guide rail (5), the anti-collision assembly comprises a hanging beam (47), the hanging beam (47) is connected with the longitudinal beam (2), a reinforcing beam (48) is connected between two sides of the hanging beam (47) and the longitudinal beam (2), a vertical plate (49) is arranged at the front end of the hanging beam (47), triangular ribs (50) are connected between the outer side of the vertical plate (49) and the hanging beam (47), an anti-collision pad (51) is arranged on the upper portion of the inner side of the vertical plate (49), a top plate (52) is tightly attached to the lower portion of the inner side of the vertical plate (49), and the lower portion of the top plate (52) is connected with the hanging beam (47).

5. The large centrifugal pump performance test outlet pipe moving mechanism of claim 1, wherein: a limit plate (53) is vertically arranged on the outer side of the small flat plate (29) in each axial pushing assembly.

6. The large centrifugal pump performance test outlet pipe moving mechanism of claim 1, wherein: and a supporting triangular rib (54) is connected between the side surface of each circular arc connecting plate (30) and the small flat plate (29).

7. The large centrifugal pump performance test outlet pipe moving mechanism of claim 1, wherein: the radial supporting jack (18) and the axial supporting jack (15) are both hydraulic jacks.

Technical Field

The invention belongs to the technical field of large centrifugal pump performance test equipment, and particularly relates to a moving mechanism of a water outlet pipeline for large centrifugal pump performance test.

Background

The centrifugal pump is a pump for conveying liquid by centrifugal force generated when an impeller rotates, and can be widely used for conveying slurry containing solid particles in industries such as electric power, metallurgy, coal, building materials and the like. In the performance test process of the centrifugal pump, the test pipeline and the pump outlet water pipe are required to be installed in a centering mode, the test pipeline of the common centrifugal pump is relatively simple to install and easy to operate, but in the performance test process of the large centrifugal pump, the length of the water outlet pipeline used for performance test can reach 23 meters, the weight of the water outlet pipeline reaches 20 tons, the water outlet pipeline has the advantages of being large in size, heavy in weight and the like, and the water outlet pipeline cannot be moved in a manual mode and centered with the pump outlet. At present, the movement of the outlet pipeline for the performance test of the large centrifugal pump is mainly completed by means of combined hoisting of a plurality of travelling cranes, and because the movement of the outlet pipeline needs to be completed by controlling the plurality of travelling cranes in coordination, a plurality of difficulties exist in the operation process, for example, the balance hoisting point of the coordinated hoisting of the plurality of travelling cranes is difficult to find, the moving distance of the pipeline is difficult to accurately control due to the difference of synchronous mobility of the travelling cranes, so that the labor cost for installing the pipeline is high, the labor intensity is high, the production efficiency is low, and the safety is poor during the performance test of the large centrifugal pump, thereby seriously restricting the production efficiency of the performance test of the large centrifugal pump.

Disclosure of Invention

Aiming at the defects, the invention discloses a large-scale centrifugal pump performance test water outlet pipeline moving mechanism which is high in technical maturity, safe, reliable and simple and convenient to operate, and solves the problems that a pipeline balance lifting point is difficult to find, the moving distance is difficult to accurately control and the like when a water outlet pipeline for a large-scale centrifugal pump performance test is moved.

The invention is realized by adopting the following technical scheme:

a water outlet pipeline moving mechanism for performance test of a large centrifugal pump comprises a supporting frame assembly, a traveling system, an axial supporting assembly, a radial supporting assembly, an axial pushing assembly and a water outlet flange surface mounting and lifting assembly;

the supporting frame assembly comprises two cross beams which are parallel to each other, two longitudinal beams which are parallel to each other are connected between the two cross beams, a plurality of auxiliary longitudinal beams are arranged between the two longitudinal beams, and two ends of each auxiliary longitudinal beam are respectively connected with the cross beams; more than two upright posts are respectively and uniformly distributed at the lower parts of the cross beam, the longitudinal beam and the auxiliary longitudinal beam;

two groups of traveling systems are arranged on the supporting frame, a pair of guide rails is arranged in each group of traveling systems, the pair of guide rails are transversely arranged on the longitudinal beam and the auxiliary longitudinal beam, a plurality of guide rail beams are arranged right below each guide rail, and two ends of each guide rail beam are respectively connected with the longitudinal beam or the auxiliary longitudinal beam; the pair of guide rails is provided with a driving travelling mechanism and a driven travelling mechanism; the driving travelling mechanism comprises a pair of travelling wheels connected through a connecting shaft I, a speed reducer is connected onto the connecting shaft I, a speed reducing motor is arranged on one side of the connecting shaft I, and a crankshaft of the speed reducing motor is connected with an input end of the speed reducer; the driven travelling mechanism comprises a pair of travelling wheels connected through a connecting shaft II; each walking wheel is correspondingly provided with a stool bracket, the stool bracket is provided with two straight plates, the two straight plates are respectively positioned at two sides of the walking wheel and are connected with the connecting shaft I or the connecting shaft II through bearings, and the tops of the two straight plates are connected through a flat plate;

the driving travelling mechanism and the driven travelling mechanism are respectively provided with an axial supporting assembly, the axial supporting assembly is provided with a connecting beam I, two ends of the connecting beam I are respectively connected with flat plates of stool supports on travelling wheels, the upper part of the connecting beam I is fixedly connected with an axial supporting jack, and the upper part of the axial supporting jack is fixedly provided with a load-bearing roller trolley;

a connecting beam II is arranged above the travelling wheels on the same guide rail, a radial supporting jack is fixedly mounted on the stool bracket of each travelling wheel, the top of the radial supporting jack is connected with the corresponding connecting beam II, and the lower part of the connecting beam I is connected with the speed reducer;

a radial supporting assembly is arranged above each group of travelling crane systems, the radial supporting assembly comprises two connecting beams III which are longitudinally arranged, the two connecting beams III are positioned above two connecting beams II in the same travelling crane system, a plurality of connecting beams IV are longitudinally and horizontally arranged between the two connecting beams III, the connecting beams IV cross two groups of travelling crane systems, the lower parts of the connecting beams IV are connected with the connecting beams II, the lower part of one end of each connecting beam III is connected with the connecting beam II, the lower parts of the other end of each connecting beam III and the lower parts of the two ends of each connecting beam IV are respectively connected with a support leg, a long connecting plate is arranged below each support leg, the support legs are connected with the long connecting plate, the front end of each connecting beam III on one side of each support leg is connected with a hydraulic cylinder big-end support lug stand column, and the inner side of each hydraulic cylinder big-end support lug stand column is provided with a hydraulic cylinder big-end support lug; the long connecting plate is fixedly connected with the cross beam through a U-shaped hoop;

an axial pushing assembly is arranged above each radial supporting assembly and comprises a long plate, the long plate spans all the connecting beams IV, fixing plates are arranged on the lower portions of two ends of the long plate and located below the connecting beams IV, and the fixing plates are connected with the long plate through bolts; the long plate is provided with arc connecting blocks, two sides of the long plate are respectively provided with a small flat plate, the small flat plates are placed on the opposite load-bearing roller trolleys, two arc connecting plates are vertically arranged on the small flat plates, and the tops of the two arc connecting plates are connected with clamp fixing plates; an arc big tray is arranged between one side of the long plate and the small flat plate, an arc small tray is arranged between the other side of the long plate and the small flat plate, two sides of the arc big tray are respectively and fixedly connected with the arc connecting block and the opposite arc connecting plate, two sides of the arc small tray are respectively and fixedly connected with the arc connecting block and the opposite arc connecting plate, a plurality of matched clamps are arranged above the arc big tray and the arc small tray, one end of each clamp is connected with the top of the arc connecting block through a bolt, and the other end of each clamp is connected with a clamp fixing plate through a bolt; the circular arc large trays of each axial pushing assembly are positioned on the same side; one end of the small flat plate is provided with a hydraulic cylinder, the bottom of the hydraulic cylinder is fixedly connected with a large-end support lug of the hydraulic cylinder, one end of the small flat plate, which is close to the hydraulic cylinder, is fixedly provided with a small-end support lug of the hydraulic cylinder, and the top of the hydraulic cylinder is fixedly connected with the small-end support lug of the hydraulic cylinder;

the large-scale centrifugal pump performance test water outlet pipeline moving mechanism is provided with two groups of water outlet flange surface mounting and lifting components which are respectively matched with a large water outlet pipe and a small water outlet pipe for test, each water outlet flange surface mounting and lifting component comprises a water outlet elbow and a water outlet connecting flange, one end of each water outlet elbow is connected with the corresponding test water outlet pipe, the other end of each water outlet elbow is connected with a rubber soft joint, one end of each water outlet connecting flange is connected with a water outlet of the centrifugal pump, the other end of each water outlet connecting flange is connected with a matched water pipe, and the water pipes are connected with the rubber soft joints; go out the water elbow and be close to the one end both sides that the rubber soft connects and be equipped with an upper limb respectively the one end both sides that the water pipe is close to delivery port flange are equipped with a lower limb respectively, lower limb and upper limb one-to-one, the both sides of water pipe are equipped with a chain block respectively, the top and the upper limb of chain block are connected, chain block's jack-up chain is connected with the lower limb.

The operation method of the water outlet pipeline moving mechanism for the performance test of the large centrifugal pump comprises the following steps:

(1) firstly, building a support frame assembly of a water outlet pipeline moving mechanism for the performance test of the large centrifugal pump, then arranging a base for fixing the large centrifugal pump on one longitudinal side of the support frame assembly, and sequentially mounting a walking system, an axial lifting assembly, a radial lifting assembly and an axial pushing assembly on the support frame assembly; secondly, placing the test water outlet pipes of two specifications and sizes which are frequently used actually on the arc big tray and the arc small tray respectively, fixing the test water outlet pipes by using a hoop, and fixedly connecting the water inlet ends of the test water outlet pipes with the water outlet elbow of the water outlet flange surface mounting lifting assembly; then, mounting a lifting assembly on the large centrifugal pump to be tested close to the flange surface of the water outlet and fixing the large centrifugal pump to be tested on the base;

(2) then, operating the hand chain blocks on two sides of the water pipe in the water outlet flange surface installation lifting assembly, pulling the hand chain of the hand chain block, enabling the hoisting chain to drive the water pipe to move to one side of the water outlet elbow, reducing the distance between the water pipe and the water outlet elbow and extruding the rubber soft joint; then the U-shaped hoop is taken down, so that the long connecting plate and the cross beam are not attached to each other, then the radial supporting jacks on each bench support are started simultaneously to upwards jack the radial supporting assembly, each assembly mechanism above the radial supporting assembly and the test water outlet pipe together, and the long connecting plate and the cross beam are separated;

(3) then, simultaneously starting a speed reducing motor in each group of running system, so as to sequentially drive a connecting shaft I and a travelling wheel to rotate, and enabling the travelling wheel to move along a guide rail, thereby driving each component mechanism above the running system and a test water outlet pipe to radially move, further driving a water pipe of a water outlet flange surface installation lifting component to move, and enabling a water outlet connecting flange connected with the water pipe to be radially aligned with a water outlet of the large-scale centrifugal pump; then, simultaneously relieving the pressure of each radial supporting jack, so that the radial supporting component, each component mechanism above the radial supporting component and the test water outlet pipe are integrally reset together, and then the long connecting plate and the cross beam are fixed by a U-shaped clamp;

(4) then loosening the bolts on the fixing plates in the axial pushing assembly to increase the distance between the fixing plates and the long plates, wherein the fixing plates and the long plates are not used for clamping the connecting beam IV;

(5) then simultaneously starting each axial supporting jack, and upwards jacking the axial pushing assembly and the test water outlet pipe to separate the long plate from the connecting beam IV in the axial pushing assembly; then simultaneously starting each hydraulic cylinder, pushing or pulling the small flat plate, driving the arc big tray or the arc small tray connected with the small flat plate to move, thereby driving the arc connecting block and the long plate assembly to move, axially moving the test water outlet pipe, and driving the water pipe of the water outlet flange surface installation lifting assembly to axially move, so that the water outlet connecting flange connected with the water pipe is completely aligned with the water outlet of the large centrifugal pump; then, simultaneously relieving the pressure of each axial supporting jack to enable the axial pushing assembly and the test water outlet pipe to be integrally reset together, and tightening the bolts on the fixing plates to enable the fixing plates and the long plate to clamp and fix the connecting beam IV; and then, the hand chain of the hand chain block is pulled, so that the hoisting chain drives the water pipe to move away from the water outlet elbow, the distance between the water pipe and the water outlet elbow is increased, the water outlet connecting flange connected with the water pipe is enabled to be in centering fit with the water outlet of the large-scale centrifugal pump, meanwhile, the rubber soft joint is loosened, the water pipe is pushed downwards to be in centering fit with the water outlet of the large-scale centrifugal pump, and finally, the water outlet pipe for testing is in centering connection with the water outlet of the large-scale centrifugal pump.

Furthermore, a diagonal brace is connected between each upright post and the cross beam, a diagonal brace is connected between each upright post and the longitudinal beam, a diagonal brace is connected between each upright post and the auxiliary longitudinal beam, and a diagonal brace is connected between the side surface of each support leg and the connecting beam III or the connecting beam IV. The increase sets up the steadiness that the bracing piece can improve structures such as stand and crossbeam.

Furthermore, the pair of guide rails is pressed on the longitudinal beam or the auxiliary longitudinal beam through a plurality of guide rail pressing plates, and the guide rail pressing plates are fastened with the longitudinal beam or the auxiliary longitudinal beam through bolts. The guide rail pressing plate can be used for fastening the guide rail and the longitudinal beam or the auxiliary longitudinal beam better, and displacement in the working process is avoided.

Furthermore, two sides of each guide rail are respectively provided with an anti-collision assembly, each anti-collision assembly comprises an overhanging beam, the overhanging beam is connected with the longitudinal beam, reinforcing beams are connected between the two sides of the overhanging beam and the longitudinal beam, the front end of the overhanging beam is provided with a vertical plate, triangular ribs are connected between the outer side of the vertical plate and the overhanging beam, the upper part of the inner side of the vertical plate is provided with an anti-collision pad, the lower part of the inner side of the vertical plate is tightly attached with a top plate, and the lower part of the top plate is connected with the overhanging beam. Set up anticollision subassembly and can carry on spacingly to the driving system, prevent that the driving system from shifting out outside the overall equipment structure after the trouble.

Furthermore, a limiting plate is vertically arranged on the outer side of the small flat plate in each axial pushing assembly. The limiting plate is arranged to prevent the small flat plate from being separated from the load roller trolley.

Furthermore, a supporting triangular rib is connected between the side surface of each circular arc connecting plate and the small flat plate. The stability of the arc connecting plate is improved by additionally arranging the supporting triangular ribs.

Furthermore, the radial supporting jack and the axial supporting jack are both hydraulic jacks.

Compared with the prior art, the technical scheme has the following beneficial effects:

1. the invention provides a large-scale centrifugal pump performance test water outlet pipeline moving mechanism which is high in technical maturity, safe, reliable and simple and convenient to operate, and is driven by three modes of a motor, an electric mode and a hydraulic mode in a coordinated mode, a travelling system provided with a speed reducing motor drives a test water outlet pipe to move in a radial direction, and an axial supporting component, a radial supporting component and an axial pushing component in a hydraulic driving mode drive the test water outlet pipe to lift and move in an axial direction, so that the large-scale centrifugal pump performance test water outlet pipeline can move flexibly in a horizontal plane, and the purpose of accurate centering with an outlet flange of a centrifugal pump is achieved. The invention also adopts a water outlet flange surface mounting lifting component which can lift the water pipe for connection in a second stage in the vertical direction so as to realize the joint mounting of the inlet flange surface of the pipeline and the outlet flange surface of the centrifugal pump.

2. Compared with the existing operation flow that a plurality of traveling cranes are simultaneously controlled to cooperatively finish large-scale pipeline movement and flange surface mounting and fitting, the invention solves the problems that the pipeline balance lifting point is difficult to find, the movement distance is difficult to accurately control, the synchronous movement of the traveling cranes is poor, the safety is poor, the operation is time-consuming and the like in the operation process.

3. By adopting the method, the labor cost and the labor intensity of workers can be greatly reduced, the production efficiency is improved, the test time of one large-scale centrifugal pump is shortened from 6 hours consumed by 2 persons to 1 hour consumed by 1 person, and the generated economic benefit is very obvious.

Drawings

Fig. 1 is a schematic structural diagram of a water outlet pipeline moving mechanism for a large centrifugal pump performance test.

Fig. 2 is a schematic structural view of the support frame assembly of the present invention.

Fig. 3 is a schematic structural diagram of the walking system of the invention.

Fig. 4 is a schematic structural view of the axial jacking assembly of the present invention.

Fig. 5 is a schematic structural view of the radial lift assembly of the present invention.

Fig. 6 is a schematic structural view of the axial pushing assembly of the present invention.

Fig. 7 is a schematic structural view of the connecting beam iv and the long plate according to the present invention.

FIG. 8 is a schematic structural view of a lifting assembly for mounting to a flange surface of a water outlet according to the present invention.

Reference numerals: 1-cross beam, 2-longitudinal beam, 3-auxiliary longitudinal beam, 4-upright post, 5-guide rail, 6-guide rail beam, 7-road wheel, 8-connecting shaft I, 9-gear motor, 10-reducer, 11-connecting shaft II, 12-straight plate, 13-flat plate, 14-connecting beam I, 15-axial jacking jack, 16-load-bearing roller trolley, 17-connecting beam II, 18-radial jacking jack, 19-connecting beam III, 20-connecting beam IV, 21-supporting leg, 22-long connecting plate, 23-hydraulic cylinder big end lug upright post, 24-hydraulic cylinder big end lug, 25-U-shaped hoop, 26-long plate, 27-fixed plate, 28-circular arc connecting block, 29-small flat plate, 30-circular arc connecting plate, 31-a clamp fixing plate, 32-a circular arc big tray, 33-a circular arc small tray, 34-a clamp, 35-a hydraulic cylinder, 36-a hydraulic cylinder small end support lug, 37-a water outlet elbow, 38-a water outlet connecting flange, 39-a test water outlet pipe, 40-a rubber soft joint, 41-a water pipe, 42-an upper support lug, 43-a lower support lug, 44-a hand chain block, 45-an inclined support rod, 46-a guide rail pressing plate, 47-a hanging beam, 48-a reinforcing beam, 49-a vertical plate, 50-a triangular rib, 51-an anti-collision pad, 52-a top plate, 53-a limiting plate, 54-a supporting triangular rib and 55-a lifting chain.

Detailed Description

The invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto. The specific experimental conditions and methods not indicated in the following examples are generally conventional means well known to those skilled in the art.

Example 1:

a water outlet pipeline moving mechanism for performance test of a large centrifugal pump comprises a supporting frame assembly, a traveling system, an axial supporting assembly, a radial supporting assembly, an axial pushing assembly and a water outlet flange surface mounting and lifting assembly;

the supporting frame assembly comprises two parallel cross beams 1, two parallel longitudinal beams 2 are connected between the two cross beams 1, 1 auxiliary longitudinal beam 3 is arranged between the two longitudinal beams 2, and two ends of the auxiliary longitudinal beam 3 are respectively connected with the cross beams 1; the lower part of the cross beam 1 is respectively and uniformly distributed with 3 upright posts 4, and the lower parts of the longitudinal beam 2 and the auxiliary longitudinal beam 3 are respectively and uniformly distributed with 2 upright posts 4;

two groups of traveling systems are arranged on the supporting frame, a pair of guide rails 5 is arranged in each group of traveling systems, the pair of guide rails 5 are transversely arranged on the longitudinal beam 2 and the auxiliary longitudinal beam 3, 2 guide rail beams 6 are arranged right below each guide rail 5, and two ends of each guide rail beam 6 are respectively connected with the longitudinal beam 2 or the auxiliary longitudinal beam 3; the pair of guide rails 5 is provided with a driving travelling mechanism and a driven travelling mechanism; the driving travelling mechanism comprises a pair of travelling wheels 7 connected through a connecting shaft I8, a speed reducer 10 is connected onto the connecting shaft I8, a speed reducing motor 9 is arranged on one side of the connecting shaft I8, and a machine shaft of the speed reducing motor 9 is connected with an input end of the speed reducer 10; the driven travelling mechanism comprises a pair of travelling wheels 7 connected through a connecting shaft II 11; each walking wheel 7 is correspondingly provided with a stool support, the stool support is provided with two straight plates 12, the two straight plates 12 are respectively positioned on two sides of the walking wheel 7 and are connected with a connecting shaft I8 or a connecting shaft II 11 through bearings, and the tops of the two straight plates 12 are connected through a flat plate 13;

the driving travelling mechanism and the driven travelling mechanism are respectively provided with an axial supporting assembly, the axial supporting assembly is provided with a connecting beam I14, two ends of the connecting beam I14 are respectively connected with a flat plate 13 of a stool support on the travelling wheel 7, the upper part of the connecting beam I14 is fixedly connected with an axial supporting jack 15, and the upper part of the axial supporting jack 15 is fixedly provided with a load-carrying roller trolley 16;

a connecting beam II 17 is arranged above the travelling wheels 7 on the same guide rail 5, a radial supporting jack 18 is fixedly mounted on a stool bracket of each travelling wheel 7, the top of the radial supporting jack 18 is connected with the connecting beam II 17 opposite to the radial supporting jack 18, and the lower part of the connecting beam I14 is connected with the speed reducer 10;

a radial supporting assembly is arranged above each group of the traveling systems, the radial supporting assembly comprises two connecting beams III 19 which are longitudinally arranged, the two connecting beams III 19 are positioned above the two connecting beams II 17 in the same driving system, 2 connecting beams IV 20 are longitudinally and horizontally arranged between the two connecting beams III 19, the connecting beam IV 20 spans the two groups of walking systems, the lower part of the connecting beam IV 20 is connected with the connecting beam II 17, the lower part of one end of the connecting beam III 19 is connected with a connecting beam II 17, the lower part of the other end of the connecting beam III 19 and the lower parts of two ends of the connecting beam IV 20 are respectively connected with a supporting leg 21, a long connecting plate 22 is arranged below the supporting leg 21, the supporting leg 21 is connected with the long connecting plate 22, the front end of a connecting beam III 19 on one side of the support leg 21 is connected with a hydraulic cylinder large-end support lug upright post 23, and a hydraulic cylinder large-end support lug 24 is arranged on the inner side of the hydraulic cylinder large-end support lug upright post 23; the long connecting plate 22 is fixedly connected with the cross beam 1 through a U-shaped hoop 25;

an axial pushing assembly is arranged above each radial supporting assembly and comprises a long plate 26, the long plate 26 spans all the connecting beams IV 20, fixing plates 27 are arranged at the lower parts of two ends of the long plate 26, the fixing plates 27 are located below the connecting beams IV 20, and the fixing plates 27 are connected with the long plate 26 through bolts; the long plate 26 is provided with an arc connecting block 28, two sides of the long plate 26 are respectively provided with a small flat plate 29, the small flat plates 29 are placed on the opposite load-bearing roller trolleys 16, two arc connecting plates 30 are vertically arranged on the small flat plates 29, and the tops of the two arc connecting plates 30 are connected with a hoop fixing plate 31; an arc big tray 32 is arranged between one side of the long plate 26 and the small flat plate 29, an arc small tray 33 is arranged between the other side of the long plate and the small flat plate 29, two sides of the arc big tray 32 are respectively and fixedly connected with the arc connecting block 28 and the opposite arc connecting plate 30, two sides of the arc small tray 33 are respectively and fixedly connected with the arc connecting block 28 and the opposite arc connecting plate 30, 2 matched clamps 34 are arranged above the arc big tray 32 and the arc small tray 33, one end of each clamp 34 is connected with the top of the arc connecting block 28 through a bolt, and the other end of each clamp 34 is connected with the clamp 34 fixing plate 31 through a bolt; the circular arc large trays 32 of each axial pushing assembly are positioned on the same side; one end of the small flat plate 29 is provided with a hydraulic cylinder 35, the bottom of the hydraulic cylinder 35 is fixedly connected with the hydraulic cylinder large end support lug 24, one end of the small flat plate 29, which is close to the hydraulic cylinder 35, is fixedly provided with a hydraulic cylinder small end support lug 36, and the top of the hydraulic cylinder 35 is fixedly connected with the hydraulic cylinder small end support lug 36;

the large centrifugal pump performance test water outlet pipeline moving mechanism is provided with two groups of water outlet flange surface mounting and lifting components which are respectively matched with a large water outlet pipe and a small water outlet pipe for test, each water outlet flange surface mounting and lifting component comprises a water outlet elbow 37 and a water outlet connecting flange 38, one end of the water outlet elbow 37 is connected with a water outlet pipe 39 for test, the other end of the water outlet elbow 37 is connected with a rubber soft joint 40, one end of the water outlet connecting flange 38 is connected with a water outlet of a centrifugal pump, the other end of the water outlet connecting flange 38 is connected with a matched water pipe 41, and the water pipe 41 is connected with the rubber soft joint 40; two sides of one end of the water outlet elbow 37 close to the rubber soft joint 40 are respectively provided with an upper support lug 42, two sides of one end of the water pipe 41 close to the water outlet connecting flange 38 are respectively provided with a lower support lug 43, the lower support lugs 43 correspond to the upper support lugs 42 one by one, two sides of the water pipe 41 are respectively provided with a chain block 44, the top of the chain block 44 is connected with the upper support lugs 42, and a hoisting chain 55 of the chain block 44 is connected with the lower support lugs 43;

the radial supporting jack 18 and the axial supporting jack 15 are both hydraulic jacks.

The operation method of the water outlet pipeline moving mechanism for the performance test of the large centrifugal pump comprises the following steps:

(1) firstly, building a support frame assembly of a water outlet pipeline moving mechanism for the performance test of the large centrifugal pump, then arranging a base for fixing the large centrifugal pump on one longitudinal side of the support frame assembly, and sequentially mounting a walking system, an axial lifting assembly, a radial lifting assembly and an axial pushing assembly on the support frame assembly; secondly, placing the test water outlet pipes 39 of two actual frequently used specifications and sizes on the arc big tray 32 and the arc small tray 33 respectively, fixing the test water outlet pipes by using the clamps 34, and fixedly connecting the water inlet ends of the test water outlet pipes 39 with the water outlet elbow 37 of the flange surface installation lifting assembly; then, mounting a lifting assembly on the large centrifugal pump to be tested close to the flange surface of the water outlet and fixing the large centrifugal pump to be tested on the base;

(2) then, operating the chain blocks 44 on the two sides of the water pipe 41 in the water outlet flange surface installation lifting assembly, pulling the chain blocks of the chain blocks 44, so that the hoisting chain 55 drives the water pipe 41 to move towards one side of the water outlet elbow 37, the distance between the water pipe 41 and the water outlet elbow 37 is reduced, and the rubber soft joint 40 is extruded; then the U-shaped hoop 25 is taken down, so that the long connecting plate 22 and the cross beam 1 are not attached to each other, then the radial supporting jacks 18 on each bench support are started simultaneously to jack up the radial supporting assembly, each assembly mechanism above the radial supporting assembly and the test water outlet pipe 39 integrally, and the long connecting plate 22 and the cross beam 1 are separated;

(3) then, simultaneously starting the speed reducing motors 9 in each group of running systems, so as to sequentially drive the connecting shaft I8 and the walking wheels 7 to rotate, and enabling the walking wheels 7 to move along the guide rails 5, so as to drive each component mechanism above the running systems and the test water outlet pipe 39 to radially move, further drive the water pipe 41 of the water outlet flange surface mounting lifting component to move, and enable the water outlet connecting flange 38 connected with the water pipe 41 to be radially aligned with the water outlet of the large-scale centrifugal pump; then, simultaneously relieving the pressure of each radial supporting jack 18, so that the radial supporting component, each component mechanism above the radial supporting component and the water outlet pipe 39 for testing are reset integrally, and then the long connecting plate 22 and the cross beam 1 are fixed by using the U-shaped hoop 25;

(4) then, the bolts on the fixing plates 27 in the axial pushing assembly are loosened, so that the distance between the fixing plates 27 and the long plates 26 is increased, and the fixing plates 27 and the long plates 26 do not clamp the connecting beam IV 20;

(5) then, simultaneously starting each axial supporting jack 15, and jacking the axial pushing assembly and the test water outlet pipe 39 upwards to separate the long plate 26 from the connecting beam IV 20 in the axial pushing assembly; then, simultaneously starting each hydraulic cylinder 35, pushing or pulling the small flat plate 29, and driving the arc big tray 32 or the arc small tray 33 connected with the small flat plate 29 to move, so as to drive the arc connecting block 28 and the long plate 26 to move, so that the water outlet pipe 39 for testing moves axially, and the water pipe 41 of the water outlet flange surface mounting and lifting assembly moves axially, so that the water outlet connecting flange 38 connected with the water pipe 41 is completely aligned with the water outlet of the large centrifugal pump; then, simultaneously relieving the pressure of each axial supporting jack 15 to enable the axial pushing assembly and the test water outlet pipe 39 to be integrally reset together, and tightening the bolts on the fixing plate 27 to enable the fixing plate 27 and the long plate 26 to clamp and fix the connecting beam IV 20; then, the hand chain of the hand chain block 44 is pulled, so that the lifting chain 55 drives the water pipe 41 to move away from the water outlet elbow 37, the distance between the water pipe 41 and the water outlet elbow 37 is increased, the water outlet connecting flange 38 connected with the water pipe 41 is enabled to be in centering and clinging contact with the water outlet of the large-scale centrifugal pump, meanwhile, the rubber soft joint 40 is loosened and also pushes the water pipe 41 to be in centering and clinging contact with the water outlet of the large-scale centrifugal pump, and finally, the water outlet pipe 39 for testing is in centering connection with the water outlet of the large-scale centrifugal pump.

Example 2:

the difference between the present embodiment and embodiment 1 is only that one diagonal brace 45 is connected between each upright 4 and the cross beam 1, one diagonal brace 45 is connected between each upright 4 and the longitudinal beam 2, one diagonal brace 45 is connected between each upright 4 and the secondary longitudinal beam 3, one diagonal brace 45 is connected between the side surface of each foot 21 and the connecting beam iii 19 or the connecting beam iv 20, and the additional arrangement of the diagonal brace 45 can improve the stability of the structures such as the upright 4 and the cross beam 1; the pair of guide rails 5 are tightly pressed on the longitudinal beam 2 or the auxiliary longitudinal beam 3 through 3 guide rail pressing plates 46, the guide rail pressing plates 46 are fastened with the longitudinal beam 2 or the auxiliary longitudinal beam 3 through bolts, the guide rails 5 can be fastened with the longitudinal beam 2 or the auxiliary longitudinal beam 3 better through the guide rail pressing plates 46, and displacement in the working process is avoided; and a supporting triangular rib 54 is connected between the side surface of each circular arc connecting plate 30 and the small flat plate 29, and the supporting triangular rib 54 is added to improve the stability of the circular arc connecting plate 30.

The operation method of the water outlet pipeline moving mechanism for the performance test of the large centrifugal pump in the embodiment is the same as that of the embodiment 1.

Example 3:

the difference between the embodiment and the embodiment 2 is that two sides of each guide rail 5 are respectively provided with an anti-collision assembly, each anti-collision assembly comprises an overhanging beam 47, each overhanging beam 47 is connected with a longitudinal beam 2, a reinforcing beam 48 is connected between each side of each overhanging beam 47 and the longitudinal beam 2, the front end of each overhanging beam 47 is provided with a vertical plate 49, a triangular rib 50 is connected between the outer side of each vertical plate 49 and each overhanging beam 47, the upper part of the inner side of each vertical plate 49 is provided with an anti-collision pad 51, the lower part of the inner side of each vertical plate 49 is tightly attached with a top plate 52, the lower part of each top plate 52 is connected with each overhanging beam 47, and the anti-collision assemblies are arranged to limit the travelling system and prevent the travelling system from deviating out of the whole equipment structure after a fault; a limiting plate 53 is vertically arranged on the outer side of the small flat plate 29 in each axial pushing assembly, and the limiting plate 53 can prevent the small flat plate 29 from being separated from the load roller trolley 16.

The operation method of the water outlet pipeline moving mechanism for the performance test of the large centrifugal pump in the embodiment is the same as that of the embodiment 2.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.