Axial ballast force testing device for centrifugal pump

Abstract

The utility model provides a centrifugal pump axial ballast force testing device, and relates to the technical field of testing equipment. The device comprises a shell, a force conduction assembly and an axial force sensor, a motor comprises an axial ballast force transmission assembly, a motor flange and a rear bearing seat, the shell is detachably connected with the motor flange, the force conduction assembly and the axial force sensor are both arranged in the shell, the force conduction assembly is connected with the rear bearing seat and makes contact with the axial ballast force transmission assembly, and the motor flange is detachably connected with the motor flange. And the axial force sensor is in contact with the force conduction assembly. The axial ballast force of the motor can be transmitted to the force transmission assembly through the axial ballast force transmission assembly, the force transmission assembly can transmit the axial ballast force to the axial force sensor, and the axial force sensor can detect the axial ballast force of the centrifugal pump in real time, so that the axial ballast force of the centrifugal pump can be tested in real time by additionally arranging the axial ballast force testing device on the motor. The specific value of the axial ballast force can be actually detected, the overall structure is more concise, and the detection accuracy is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field especially is related to a centrifugal pump axial ballast force testing arrangement. BACKGROUND

[0002] Centrifugal pump usually needs to give motor axial ballast force in structural design stage, and the motor axial ballast force is usually calculated through theoretical mechanics model, and there is certain difference with actual ballast force, thereby leading to that the axial bearing capacity design of centrifugal pump motor is low, and the service life of motor efficiency and rear bearing and other parts is affected. SUMMARY

[0003] The utility model discloses a centrifugal pump axial ballast force testing arrangement to solve the technical problems in prior art, and the preferred technical scheme in the utility model discloses a plurality of technical solutions can produce a plurality of technical effects, which are described below.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A centrifugal pump axial ballast force testing arrangement, including shell, force transmission subassembly and axial force sensor, motor includes axial ballast force transmission subassembly, motor flange and rear bearing seat, the shell is detachably connected with motor flange, the force transmission subassembly and axial force sensor are all arranged in the shell interior, the force transmission subassembly is connected with rear bearing seat and contacts with axial ballast force transmission subassembly, and axial force sensor contacts with force transmission subassembly.

[0006] Preferably, the force transmission subassembly includes force transmission structure and connecting bolt, the force transmission structure is connected with the rear bearing seat through at least two connecting bolts, the top of the connecting bolt contacts with the axial ballast force transmission subassembly and forms support, and the bottom of the force transmission structure contacts with the top of the axial force sensor.

[0007] Preferably, all connecting bolts are evenly distributed circumferentially.

[0008] Preferably, the shell is bolted with the motor flange through a plurality of fixing bolts, and each fixing bolt passes through the rear bearing seat.

[0009] Preferably, a plurality of fixing bolts are evenly distributed circumferentially.

[0010] Preferably, it further includes support plate and support bolt, the support plate is connected with the rear bearing seat through a plurality of support bolts, and the axial force sensor is placed on the support plate.

[0011] Preferably, an upper sealing ring is further included between the rear bearing seat and the outer shell.

[0012] Preferably, a lower sealing ring is further included between the shell of the axial force sensor and the outer shell.

[0013] The beneficial effects of the utility model are that the axial pressure load of the motor can be transmitted to the force conduction assembly through the axial pressure load transmission assembly, the force conduction assembly can transmit the axial pressure load to the axial force sensor, and the axial force sensor can detect the axial pressure load of the centrifugal pump in real time, so that the specific value of the axial pressure load can be actually detected by adding the centrifugal pump axial pressure load testing device on the motor, the overall structure is more simple, and the detection accuracy is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0015] Figure 1 It is a sectional structure diagram of the utility model;

[0016] Figure 2 It is a sectional detail structure diagram of the utility model;

[0017] 1, outer shell; 11, fixing bolt in the drawing;

[0018] 21, force conduction structure; 22, connecting bolt;

[0019] 3, axial force sensor;

[0020] 41, support plate; 42, support bolt;

[0021] 5, upper sealing ring;

[0022] 6, lower sealing ring;

[0023] 71, axial pressure load transmission assembly; 711, motor shaft; 712, support pipe; 713, porcelain ring; 714, carbon bearing; 715, balance disc; 72, motor flange; 73, rear bearing seat. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope protected by the utility model.

[0025] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side" and the like is based on the drawings of the utility model and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. Figure 1

[0026] In the description of the utility model, it is understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] With reference to Figures 1 to 2 The utility model provides a kind of axial load force testing device of centrifugal pump, including shell 1, force transmission component and axial force sensor 3;

[0028] Motor includes axial load force transmission component 71, motor flange 72 and rear bearing seat 73;

[0029] Shell 1 is detachably connected with motor flange 72, force transmission component and axial force sensor 3 are all arranged in the inside of shell 1, force transmission component is connected with rear bearing seat 73 and is contacted with axial load force transmission component 71, axial force sensor 3 is contacted with force transmission component;

[0030] ​The axial load force of the motor can be transmitted to the force transmission assembly through the axial load force transmission assembly 71, the force transmission assembly can transmit the axial load force to the axial force sensor 3, and the axial force sensor 3 can detect the axial load force of the centrifugal pump in real time. Therefore, by adding the centrifugal pump axial load force testing device to the motor, the centrifugal pump axial load force testing device can actually detect the specific value of the axial load force, the overall structure is more simple, the detection accuracy is high, and the motor design can be corrected and improved by combining with parameters such as voltage, current, and speed and curves, so as to improve the motor quality and service life.

[0031] As an optional implementation, the force transmission assembly includes a force transmission structure 21 and connecting bolts 22, the force transmission structure 21 is connected to the rear bearing seat 73 through at least two connecting bolts 22, the top of the connecting bolt 22 is in contact with the axial load force transmission assembly 71 and forms a support, and the bottom of the force transmission structure 21 is in contact with the top of the axial force sensor 3. The axial load force transmitted by the axial load force transmission assembly 71 can be transmitted to the force transmission structure 21 through the connecting bolt 22 and then transmitted to the axial force sensor 3 through the force transmission structure 21.

[0032] All the connecting bolts 22 are uniformly distributed in the circumferential direction, so that the stress is more uniform. In the embodiment, the number of connecting bolts 22 is preferably two, so that the connecting bolts 22 can be symmetrically arranged.

[0033] As an optional implementation, the shell 1 is bolted to the motor flange 72 through a plurality of fixing bolts 11, so that the shell 1 can be fixed to the motor flange 72, and each fixing bolt 11 passes through the rear bearing seat 73 and is connected to the motor flange 72.

[0034] The plurality of fixing bolts 11 are uniformly distributed in the circumferential direction, so that the stress is more uniform. In the embodiment, the number of fixing bolts 11 is preferably three.

[0035] As an optional implementation, a support plate 41 and a support bolt 42 are further included, the support plate 41 is connected to the rear bearing seat 73 through a plurality of support bolts 42, the axial force sensor 3 is placed on the support plate 41, the support plate 41 can facilitate the placement of the axial force sensor 3 and prevent the axial force sensor 3 from falling, and in the embodiment, the number of support bolts 42 is preferably three, and the three support bolts 42 are uniformly distributed in the circumferential direction, so that the stress is more uniform.

[0036] As an optional implementation, an upper sealing ring 5 is further included, the upper sealing ring 5 is located between the rear bearing seat 73 and the shell 1, a groove can be preferably formed to provide a space for the placement of the upper sealing ring 5, and the upper sealing ring 5 can form a seal between the rear bearing seat 73 and the shell 1, so as to effectively prevent water in the motor from leaking and avoid affecting the basic function of the motor.

[0037] As an optional implementation, the lower sealing ring 6 is arranged between the shell of the axial force sensor 3 and the outer shell 1, and a groove is preferably formed to provide a space for the lower sealing ring 6, and the lower sealing ring 6 can form a seal between the shell of the axial force sensor 3 and the outer shell 1, thereby effectively preventing water leakage in the motor and avoiding affecting the basic function of the motor.

[0038] In the embodiment, the structural parts other than the upper sealing ring 5 and the lower sealing ring 6 are preferably made of stainless steel, which is more beneficial to rust prevention and has high structural strength.

[0039] In the embodiment, the axial load force transmission assembly 71 can include a motor shaft 711, a support tube 712, a porcelain ring 713, a carbon bearing 714, and a balance disc 715 connected in sequence, and the above structures are conventional settings of the existing motor structure.

[0040] The use method of the centrifugal pump axial load force testing device is as follows: after the motor is started, the motor speed and the centrifugal pump water outlet flow are adjusted, and the water outlet pressure of the centrifugal pump can be detected.

[0041] At this time, the axial load force of the centrifugal pump on the motor can be transmitted to the support tube 712 through the motor shaft 711, to the porcelain ring 713 through the support tube 712, to the carbon bearing 714 through the porcelain ring 713, and to the balance disc 715 through the carbon bearing 714. Since the force transmission structure 21 supports the balance disc 715 through the connecting bolt 22, and the force transmission structure 21 is in contact with the axial force sensor 3, the balance disc 715 can transmit the load force to the axial force sensor 3 through the force transmission structure 21, and the axial load force of the centrifugal pump can be measured.

[0042] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A centrifugal pump axial thrust force testing device, characterized by, The motor comprises an outer shell (1), a force transmission assembly and an axial force sensor (3), the motor comprises an axial ballast force transmission assembly (71), a motor flange (72) and a rear bearing seat (73), the outer shell (1) is detachably connected with the motor flange (72), the force transmission assembly and the axial force sensor (3) are arranged inside the outer shell (1), the force transmission assembly is connected with the rear bearing seat (73) and is in contact with the axial ballast force transmission assembly (71), the axial force sensor (3) is in contact with the force transmission assembly, the force transmission assembly comprises a force transmission structure (21) and connecting bolts (22), the force transmission structure (21) is connected with the rear bearing seat (73) through at least two connecting bolts (22), the top of the connecting bolt (22) is in contact with the axial ballast force transmission assembly (71) and forms a support, the bottom of the force transmission structure (21) is in contact with the top of the axial force sensor (3).

2. The centrifugal pump axial thrust force testing device of claim 1, wherein, All the connecting bolts (22) are uniformly distributed in the circumferential direction.

3. The centrifugal pump axial thrust force testing apparatus of claim 1, wherein, The outer shell (1) is bolted with the motor flange (72) through a plurality of fixing bolts (11), each fixing bolt (11) penetrates the rear bearing seat (73).

4. The centrifugal pump axial thrust force testing apparatus of claim 3, wherein, The plurality of fixing bolts (11) are uniformly distributed in the circumferential direction.

5. The centrifugal pump axial thrust force testing apparatus of claim 1, wherein, Further comprising a support plate (41) and a support bolt (42), the support plate (41) is connected with the rear bearing seat (73) through a plurality of support bolts (42), and the axial force sensor (3) is placed on the support plate (41).

6. The centrifugal pump axial thrust force testing apparatus of claim 1, wherein, Further comprising an upper sealing ring (5), the upper sealing ring (5) is located between the rear bearing seat (73) and the outer shell (1).

7. The centrifugal pump axial thrust force testing apparatus of claim 1, wherein, Further comprising a lower sealing ring (6), the lower sealing ring (6) is located between the shell of the axial force sensor (3) and the outer shell (1).

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