CN217582521U

CN217582521U - Test bed for driving two large centrifugal pump units by using double-shaft extension motor

Info

Publication number: CN217582521U
Application number: CN202221023854.8U
Authority: CN
Inventors: 宋黎明; 谷峰; 陈玉婷; 陈林丹
Original assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd; Sinopec Shanghai Engineering Co Ltd
Current assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd; Sinopec Shanghai Engineering Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-10-14
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a test bench of two large-scale centrifugal pump units of motor drive is stretched with biax, relate to centrifugal pump technical field, stretch the motor including the biax, first centrifugal pump, the second centrifugal pump, support and water pitcher, the one end axle that the biax stretched the motor is stretched and is passed through the shaft coupling with first centrifugal pump and directly allies oneself with, the axis that the biax stretched the other end of motor is stretched and is passed through the shaft coupling with the second centrifugal pump and directly allies oneself with, the both sides of first centrifugal pump and second centrifugal pump all are equipped with a support, the water inlet of first centrifugal pump and the water inlet of second centrifugal pump are connected with the delivery port of water pitcher through a first water pipe respectively, the delivery port of first centrifugal pump and the delivery port of second centrifugal pump are connected with the water inlet of water pitcher through a second water pipe. The two centrifugal pumps are driven by the double-shaft extension motor to simultaneously operate, so that the water conservancy performance of the centrifugal pumps is tested, the load of the double-shaft extension motor is checked, all tasks are completed by one-time operation, time and labor are saved, and real test data can be obtained.

Description

Test bed for driving two large centrifugal pump units by using double-shaft extension motor

Technical Field

The utility model relates to centrifugal pump technical field especially involves a test bench of two large-scale centrifugal pump units of motor drive is stretched with biax.

Background

The centrifugal pump is a liquid conveying power machine which is most commonly applied due to the fact that the centrifugal pump is simple and durable in structure, reliable to use, high in efficiency, large in flow and low in cost, and is derived from the working principle of the centrifugal pump, so that a corresponding characteristic curve of the centrifugal pump exists, calibration parameters of the centrifugal pump are flow and lift parameters corresponding to the centrifugal pump at the highest efficiency point, and in actual use, the working parameters of the centrifugal pump do not deviate from the calibration parameters too much and are a reasonable working interval.

In the prior art, in the installation scheme of one double-shaft extension motor driving two centrifugal pump units, if a pump system with the configuration is used for testing a single pump, the pump system is required to be operated after another pump coupler is disconnected, otherwise, the pump system can be operated in an 'empty' mode without being put into a water transportation pipe network pump, if the pumps are respectively disconnected for water operation test, the water performance test of the pump can be completed through a pipe, but the motor cannot be examined under full load.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a test bench of two large-scale centrifugal pump units of motor drive is stretched with biax for solve above-mentioned technical problem.

The utility model adopts the technical scheme as follows:

the utility model provides a test bench of motor drive two large-scale centrifugal pump units is stretched with biax, includes that the biax stretches motor, first centrifugal pump, second centrifugal pump, support and water pitcher, the one end axle of motor is stretched to the biax stretch with first centrifugal pump passes through the shaft coupling direct connection, the axle of the other end that the biax stretched the motor stretch with the second centrifugal pump passes through the shaft coupling direct connection, first centrifugal pump and the both sides of second centrifugal pump all are equipped with one the support, wherein, the water inlet of first centrifugal pump and the water inlet of second centrifugal pump respectively through a first water pipe with the delivery port of water pitcher is connected, the delivery port of first centrifugal pump and the delivery port of second centrifugal pump pass through a second water pipe with the water inlet of water pitcher is connected.

Preferably, each of the brackets includes a bottom plate and a support platform disposed on the bottom plate, and the first centrifugal pump and the second centrifugal pump are mounted on the support platform.

Preferably, a clamping groove is formed in the upper end of each supporting platform.

As a further preferred option, the clamping groove is arranged along the axial direction of the first centrifugal pump and the second centrifugal pump.

As a further preference, the support platform further comprises a plurality of hexagon bolts, the bottom plate is provided with a plurality of hexagon bolts, and the hexagon bolts are located on the outer edge of the support platform.

Preferably, the double-shaft extension motor, the first centrifugal pump, the second centrifugal pump and the support are all arranged at the upper end of the unit base.

Preferably, the double-shaft motor further comprises a first diaphragm coupler and a second diaphragm coupler, one end of the double-shaft motor extends through the first diaphragm coupler and the first centrifugal pump which are directly connected through the coupler, and the other end of the double-shaft motor extends through the second diaphragm coupler and the second centrifugal pump which are directly connected through the coupler.

The technical scheme has the following advantages or beneficial effects:

the utility model discloses in for two centrifugal pumps are stretched motor drive at the biax and are moved simultaneously, have both carried out the test of the hydraulic performance of centrifugal pump and have also accomplished the biax simultaneously and stretched motor load's examination, and all tasks, labour saving and time saving are accomplished in one-time operation, and can obtain true test data.

Drawings

Fig. 1 is a schematic structural diagram of a test bed for driving two large centrifugal pump units by using a double-shaft extension motor in the utility model;

fig. 2 is a schematic side view of a test stand of the present invention, in which two large centrifugal pump units are driven by a double-shaft extension motor;

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

fig. 4 is a schematic side view of the bracket of the present invention;

fig. 5 is a schematic top view of the bracket of the present invention;

fig. 6 is a system diagram of a test bed for driving two large centrifugal pump units by a double-shaft extension motor in the present invention.

In the figure: 1. a double-shaft extension motor; 2. a first centrifugal pump; 21. a second centrifugal pump; 3. a support; 31. a base plate; 32. a support table; 33. a hexagon bolt; 34. a card slot; 4. a unit base; 5. a first diaphragm coupling; 51. a second diaphragm coupling; 6. a water tank; 7. a first water pipe; 8. a second water pipe.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a schematic structural diagram of a test bed for driving two large centrifugal pump units by using a double-shaft extension motor in the utility model; fig. 2 is a schematic side view of a test stand for driving two large centrifugal pump units by a double-shaft extension motor according to the present invention; fig. 3 is a schematic structural view of the bracket of the present invention;

fig. 4 is a side view of the bracket of the present invention; fig. 5 is a schematic top view of the bracket of the present invention; fig. 6 is a system diagram of a test bench for driving two large centrifugal pump units by a double-shaft extension motor in the present invention. Referring to fig. 1 to 6, a preferred embodiment is shown, which illustrates a test bed for driving two large centrifugal pump units by a dual-axis motor 1, including the dual-axis motor 1, a first centrifugal pump 2, a second centrifugal pump 21, a bracket 3 and a water tank 6, wherein an axis extension of one end of the dual-axis motor 1 is directly connected to the first centrifugal pump 2 through a coupler, an axis extension of the other end of the dual-axis motor 1 is directly connected to the second centrifugal pump 21 through a coupler, the bracket 3 is disposed on both sides of the first centrifugal pump 2 and the second centrifugal pump 21, a water inlet of the first centrifugal pump 2 and a water inlet of the second centrifugal pump 21 are respectively connected to a water outlet of the water tank 6 through a first water pipe 7, and a water outlet of the first centrifugal pump 2 and a water outlet of the second centrifugal pump 21 are connected to a water inlet of the water tank 6 through a second water pipe 8. As shown in fig. 1, two centrifugal pumps are driven by one motor to synchronously start or pause, so that the operation of the two centrifugal pumps is not delayed, secondly, the number of control cabinets and power distribution cabinets of a factory can be reduced, the utilization rate of the motor is increased, and the occupied area is reduced. The support 3 that sets up can adjust the horizontal position and the vertical position of centrifugal pump, can guarantee that two centrifugal pumps and biax stretch the axis between the motor 1 three coaxial, can guarantee the smooth operation of two centrifugal pumps. As shown in fig. 6, the two centrifugal pumps run simultaneously under the drive of the double-shaft extension motor, so that the water conservancy performance of the pumps is tested, the load of the motor is checked, all tasks are completed by one-time running, time and labor are saved, and real test data can be obtained. As shown in fig. 6, the first centrifugal pump 2 and the second centrifugal pump 21 are both connected with the water tank 6, and the first centrifugal pump 2 and the second centrifugal pump 21 are connected with the shaft extensions on both sides of the double-shaft extension motor 1, so that synchronous operation or synchronous stop of the two centrifugal pumps is realized, and the two centrifugal pumps can be tested for water conservancy performance at the same time.

Further, as a preferred embodiment, each bracket 3 includes a bottom plate 31 and a support table 32 disposed on the bottom plate 31, and the first centrifugal pump 2 and the second centrifugal pump 21 are mounted on the support table 32.

Further, as a preferred embodiment, a slot 34 is formed at the upper end of each supporting platform 32.

Further, as a preferred embodiment, the locking groove 34 is provided along the axial direction of the first centrifugal pump 2 and the second centrifugal pump 21.

Further, as a preferred embodiment, a plurality of hexagon bolts 33 are further included, a plurality of hexagon bolts 33 are provided on the bottom plate 31, and a plurality of hexagon bolts 33 are located at the outer edge of the support platform 32. In the embodiment, six hexagon bolts 33 are arranged and symmetrically distributed on two sides of the support platform 32, and the hexagon bolts 33 are used as leveling jackscrews to ensure that the fine adjustment process is mild and uniform. By loosening or tightening the hexagon bolt 33, the height and levelness of the bracket 3 can be adjusted. Meanwhile, after the hexagon bolts 33 are loosened, the bottom plate 31 can be moved, so that the horizontal position of the bracket 3 is adjusted, and the contact ratio of the centrifugal pump and the axial lead of the double-shaft extension motor 1 can be conveniently controlled.

Further, as a preferred embodiment, still include unit base 4, the upper end of unit base 4 is all located to biax motor 1, first centrifugal pump 2, second centrifugal pump 21 and support 3.

Further, as a preferred implementation mode, the centrifugal pump further comprises a first diaphragm coupling 5 and a second diaphragm coupling 51, wherein a shaft at one end of the double-shaft extension motor 1 extends through the first diaphragm coupling 5 to be directly connected with the first centrifugal pump 2, and a shaft at the other end of the double-shaft extension motor 1 extends through the second diaphragm coupling 51 to be directly connected with the second centrifugal pump 21. In this embodiment, the first diaphragm coupling 5 is disposed on the shaft extension at one side of the dual-shaft extension motor 1, the first centrifugal pump 2 and the first diaphragm coupling 5 are detachably connected, the second diaphragm coupling 51 is disposed on the shaft extension at the other side of the dual-shaft extension motor 1, and the second centrifugal pump 21 is detachably connected to the second centrifugal pump 21.

The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.

Claims

1. The utility model provides a test bench of two large-scale centrifugal pump units of motor drive is stretched with biax, a serial communication port, including biax stretch motor, first centrifugal pump, second centrifugal pump, support and water pitcher, the one end axis of biax stretch motor stretch with first centrifugal pump passes through the shaft coupling direct-connection, the axis of the other end of biax stretch motor stretch with the second centrifugal pump passes through the shaft coupling direct-connection, first centrifugal pump and the both sides of second centrifugal pump all are equipped with one the support, wherein, the water inlet of first centrifugal pump and the water inlet of second centrifugal pump respectively through a first water pipe with the delivery port of water pitcher is connected, the delivery port of first centrifugal pump and the delivery port of second centrifugal pump through a second water pipe with the water inlet of water pitcher is connected.

2. The test bed for driving two large centrifugal pump units by using a double-shaft extension motor as claimed in claim 1, wherein each bracket comprises a bottom plate and a support platform arranged on the bottom plate, and the first centrifugal pump and the second centrifugal pump are both arranged on the support platform.

3. The test bed for driving two large centrifugal pump units by using the double-shaft extension motor as claimed in claim 2, wherein the upper end of each support platform is provided with a clamping groove.

4. The test bed for driving two large centrifugal pump units by using the double-shaft extension motor according to claim 3, wherein the clamping groove is arranged along the axial lead direction of the first centrifugal pump and the second centrifugal pump.

5. The test bed for driving two large centrifugal pump units by using the double-shaft extension motor as claimed in claim 2, further comprising a plurality of hexagon bolts, wherein the bottom plate is provided with a plurality of hexagon bolts, and the plurality of hexagon bolts are positioned at the outer edge of the support platform.

6. The test bed for driving two large centrifugal pump units by using the double-shaft extension motor as claimed in claim 1, characterized by further comprising a unit base, wherein the double-shaft extension motor, the first centrifugal pump, the second centrifugal pump and the bracket are all arranged at the upper end of the unit base.

7. The test bed for driving two large centrifugal pump units by using the double-shaft extension motor as claimed in claim 1, further comprising a first diaphragm coupler and a second diaphragm coupler, wherein the shaft of one side of the double-shaft extension motor is directly connected with the first centrifugal pump through the first diaphragm coupler, and the shaft of the other side of the double-shaft extension motor is directly connected with the second centrifugal pump through the second diaphragm coupler.