Horizontal pipeline centrifugal pump

Abstract

The utility model relates to the technical field of centrifugal pumps, and discloses a horizontal pipeline centrifugal pump which comprises a base, installation assemblies are installed on the two sides of the base, a motor is fixed to the base, a coupler is fixed to the output end of the motor, impeller blades are fixed to the end side of the coupler, and a centrifugal pump body is fixed to the base. The impeller blades and the centrifugal pump body are coaxially arranged, and a monitoring assembly is installed on the centrifugal pump body. The device can carry out real-time grading monitoring on the bending edge warping deformation of the impeller blade, timely identifies the early slight deformation state of the blade, and timely gives an alarm when the deformation of the blade exceeds a safety range to remind a worker to shut down for maintenance. Equipment faults such as impeller blade damage, pump cavity abrasion, bearing locking and motor overload burning caused by blade deformation and expansion are effectively avoided, the radial position deviation occurring in the installation process can be effectively compensated, and accurate butt joint of the centrifugal pump and a pre-arranged pipeline is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal pump technical field, concretely is a horizontal pipeline centrifugal pump. BACKGROUND

[0002] Centrifugal pump is the pump that the centrifugal force produced when the impeller blade rotates is used to transport liquid, and the water is made to carry on the centrifugal motion and work by the rotation of the impeller blade. Before starting, the pump shell and the water suction pipe must be filled with water, and then the motor is started, the pump shaft drives the impeller blade and water to rotate at high speed, and the water is centrifuged to the outer edge of the impeller blade, and flows into the water pump pressure pipeline through the flow channel of the volute pump shell.

[0003] The existing horizontal pipeline centrifugal pump is easy to be bent and warped by medium impact and foreign matter scraping during long-term use, and such deformation is difficult to be found in time in the early stage, and continued use will cause pump body vibration, flow and head drop, bearing wear, sealing leakage and other problems, and even cause impeller blade damage and motor overload burning. At the same time, during the installation of the centrifugal pump, the pipeline is usually pre-installed, and the base and the preset installation position are easy to have radial deviation, which not only causes flange butt joint difficulty and loose connection, but also causes pipeline stress concentration and pulls the pump body, further aggravates equipment vibration and leakage, and affects the overall operation stability and service life of the centrifugal pump.

[0004] Therefore, we propose a horizontal pipeline centrifugal pump to solve the problems in the above. INVENTION CONTENTS

[0005] The utility model discloses a horizontal pipeline centrifugal pump to solve the problems that the existing centrifugal pump is not easy to find in time after the impeller blade is bent and warped, causes pump body vibration, bearing wear, sealing leakage and other problems in the process of use, reduces the use effect, and is not easy to adjust after installation.

[0006] The utility model provides following technical scheme: a horizontal pipeline centrifugal pump, including base, the both sides of base are installed with installation component, the base is fixed with motor, the output of motor is fixed with shaft coupling, the end side of shaft coupling is fixed with impeller blade, the base is fixed with centrifugal pump main part, the impeller blade with centrifugal pump main part coaxial heart is established, the centrifugal pump main part is installed with monitoring component, the monitoring component includes the outer sleeve pipe of embedding fixed on centrifugal pump main part, the inside of outer sleeve pipe is hollow, the sliding connection of outer sleeve pipe has slide rod, the end side of slide rod is fixed with arc contact plate.

[0007] Preferably, the inner wall of the outer sleeve is fixed with a pressure sensor one, the other end of the sliding rod is fixed with a contact ball, the contact ball is coaxial with the pressure sensor one, a spring is installed between the sliding rod and the pressure sensor one, one end of the spring is fixedly connected with the sliding rod, and the other end of the spring is fixedly connected with the pressure sensor one.

[0008] Preferably, a wedge-shaped groove is formed in the sliding rod, a groove is formed in the outer sleeve, a pressure sensor two is fixedly arranged on the inner wall of the groove, a compression spring is fixedly arranged on the inner wall of the groove, a wedge-shaped block is fixedly arranged on the bottom surface of the compression spring, and the wedge-shaped block is matched with the wedge-shaped groove.

[0009] Preferably, a contact rod is fixedly arranged on the top surface of the wedge-shaped block, the contact rod is coaxial with the pressure sensor two, and the wedge-shaped block is slidably connected with the groove.

[0010] Preferably, an alarm is installed on the base, and the alarm, the pressure sensor one and the pressure sensor two are electrically connected.

[0011] Preferably, the mounting assembly comprises two groups of mounting blocks fixed on the two sides of the base, a through groove is formed in each of the two groups of mounting blocks, a bolt is inserted into the through groove, a nut is threadedly installed on the bolt, and the nut is attached to the mounting block.

[0012] The utility model has the following beneficial effects:

[0013] The centrifugal pump can monitor the bending and edge deformation of the impeller blade in real time, identify the early slight deformation state of the blade in time, issue an alarm in time when the deformation of the impeller blade exceeds the safety range, remind the staff to stop and overhaul, effectively avoid the expansion of the deformation of the impeller blade to cause the damage of the impeller blade, the wear of the pump cavity, the seizure of the bearing and the overloading and burning of the motor, and the like equipment failure, simultaneously reduce the false triggering probability caused by water flow impact through the optimized structure, and improve the stability and accuracy of the monitoring process.

[0014] The centrifugal pump can effectively compensate the radial position deviation in the installation process, realize accurate butt joint of the centrifugal pump and the pre-laid pipeline, does not need to adjust the pre-set installation position again during installation, does not need to additionally punch holes, simplifies the installation process, improves the installation convenience, simultaneously reduces the pipeline stress and uneven force bearing phenomenon of the pump body caused by the installation deviation, and reduces the probability of pump body vibration and medium leakage.

[0015] The centrifugal pump is more stable and reliable in overall operation, effectively prolongs the service life of the equipment, reduces the later maintenance cost and shutdown risk, can adapt to the working condition requirement of long-term continuous operation, and guarantees the smooth operation of liquid conveying. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure of the utility model Figure 1 .

[0017] Figure 2 The overall structure of the utility model Figure 2 .

[0018] Figure 3 The overall structure of the utility model

[0019] Figure 4 The overall structure of the utility model Figure 3 The enlarged structure schematic view of A in the utility model

[0020] Figure 5 The overall structure of the utility model Figure 4 The enlarged structure schematic view of B in the utility model

[0021] Figure 6 The overall structure of the utility model

[0022] In the figure: 1, base; 2, installation assembly; 21, installation block; 22, through slot; 23, bolt; 24, nut; 3, motor; 4, coupling; 5, centrifugal pump main body; 6, impeller blade; 7, monitoring assembly; 71, outer sleeve; 72, pressure sensor one; 73, sliding rod; 74, spring; 75, abutting ball; 76, arc abutting plate; 77, wedge-shaped groove; 78, recess; 79, pressure sensor two; 710, compression spring; 711, wedge-shaped block; 712, abutting rod; 8, alarm. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment 1: This embodiment aims to promote the solution to the problem that the impeller blade 6 of the horizontal pipeline centrifugal pump cannot be sensed in time when it appears bending and edge lifting during operation, slight deformation is difficult to monitor, and serious deformation continues to use to cause equipment damage. Please refer to Figure 1 - Figure 6The utility model provides a horizontal pipeline centrifugal pump, including base 1, motor 3 is fixed on base 1, the output of motor 3 is fixed with shaft coupling 4, the end side of shaft coupling 4 is fixed with impeller blade 6, centrifugal pump main body 5 is fixed on base 1, and impeller blade 6 is arranged coaxially with centrifugal pump main body 5, and monitoring assembly 7 is installed on centrifugal pump main body 5, and monitoring assembly 7 includes the sleeve tube 71 of embedding fixed on centrifugal pump main body 5, and the inside of sleeve tube 71 is hollow, and the sliding connection of slide bar 73 is arranged in sleeve tube 71, and the end side of slide bar 73 is fixed with arc contact plate 76, arc contact plate 76 is arranged in streamline arc surface shape, can effectively reduce water flow impact, avoid mis-triggering when normal operation.

[0025] The inner wall of sleeve tube 71 is fixed with pressure sensor one 72, the other end of slide bar 73 is fixed with contact ball 75, and contact ball 75 is arranged coaxially with pressure sensor one 72, and spring 74 is installed between slide bar 73 and pressure sensor one 72, one end of spring 74 is fixedly connected with slide bar 73, and the other end of spring 74 is fixedly connected with pressure sensor one 72.

[0026] The wedge-shaped groove 77 is formed in the slide bar 73, the recess 78 is formed in the sleeve tube 71, the pressure sensor two 79 is fixed on the inner wall of the recess 78, the compression spring 710 is fixed on the inner wall of the recess 78, the wedge-shaped block 711 is fixed on the bottom surface of the compression spring 710, the wedge-shaped block 711 is matched with the wedge-shaped groove 77, the contact rod 712 is fixed on the top surface of the wedge-shaped block 711, the contact rod 712 is coaxially arranged with the pressure sensor two 79, and the wedge-shaped block 711 is slidably connected with the recess 78.

[0027] The alarm 8 is installed on the base 1, and the alarm 8, the pressure sensor one 72 and the pressure sensor two 79 are electrically connected.

[0028] In this embodiment: when using the centrifugal pump, first, the centrifugal pump is stably installed on the ground through the base 1, and after installation is completed, normal operation can be put into. In the running process, the motor 3 is started, the motor 3 drives the impeller blade 6 to rotate synchronously through the shaft coupling 4, the impeller blade 6 rotates at high speed in the centrifugal pump main body 5, thereby realizing stable delivery of liquid.

[0029] During the long-term continuous operation of the centrifugal pump, the blades on the impeller blade 6 are easily affected by factors such as medium impact, foreign matter scratching and load fluctuation to appear bending and edge lifting phenomenon. If such deformation cannot be found and handled in time, the pump body will be vibrated obviously, the delivery flow and the delivery head will continue to decrease, the bearing wear speed will be accelerated, the mechanical seal will leak, and the normal use of the centrifugal pump will be seriously affected.

[0030] As Figure 3 Figure 6 ​As shown, once the blade is slightly bent and warped during the rotation of the impeller blade 6, it will contact the arc-shaped abutment plate 76 and generate an abutment force. The arc-shaped abutment plate 76 is forced to move smoothly inside the outer sleeve 71, and the wedge-shaped slot 77 is displaced synchronously while the wedge-shaped rod 73 moves. The wedge-shaped slot 77 cooperates with the wedge-shaped block 711 and applies an upward force to the wedge-shaped block 711. The wedge-shaped block 711 is forced to slide upward along the groove 78, thereby driving the abutment rod 712 to move synchronously. The abutment rod 712 exerts pressure on the pressure sensor two 79 during movement, causing the pressure sensor two 79 to preferentially perceive the slight deformation signal of the blade. The monitoring threshold set by the pressure sensor two 79 is adapted to the early slight deformation of the blade, enabling early and accurate identification of blade deformation.

[0031] When the degree of blade bending and warping further expands, the rigid impact force generated by the impeller blade 6 will push the slide rod 73 to move further into the outer sleeve 71, and the abutment ball 75 at the end of the slide rod 73 will press the pressure sensor one 72. When the pressure of the abutment ball 75 on the pressure sensor one 72 exceeds the preset threshold, the pressure sensor one 72 immediately transmits a signal to the alarm 8, such as Figure 2 As shown, the alarm 8 promptly issues an alarm to remind the staff to immediately shut down for maintenance, avoiding a series of serious faults such as rupture of the impeller blade 6, wear of the pump cavity inner wall, bearing seizure, and motor 3 overload and burning caused by continued operation of the severely deformed blade.

[0032] Embodiment 2: This embodiment aims to solve the problem of flange butt joint difficulty, loose connection and pipeline stress concentration caused by the radial deviation between the base 1 and the preset installation position due to the pre-laid pipeline during the installation process of the horizontal pipeline centrifugal pump. This embodiment is an improvement based on embodiment 1. For details, please refer to Figure 1 and Figure 2 The base 1 is installed with an installation assembly 2 on both sides, and the installation assembly 2 includes two groups of installation blocks 21 fixed on both sides of the base 1. Two groups of installation blocks 21 are provided with through grooves 22, and the through grooves 22 are inserted with bolts 23. The bolts 23 are screwed with nuts 24, and the nuts 24 are in close contact with the installation blocks 21.

[0033] In the embodiment, when the centrifugal pump is installed, part of the conveying pipeline has been pre-laid, and the installation position of the pipeline flange is fixed. At this time, the installation operation of the centrifugal pump is extremely easy to cause the radial deviation between the base 1 and the preset installation position. If direct installation and connection are performed, the flange of the centrifugal pump and the flange of the pipeline cannot be accurately aligned, thereby causing the connection between the two to be not tight, the sealing performance to be poor, and the medium to leak during long-term operation. In addition, the deviation between the pipeline and the pump body during connection causes continuous stress on the pipeline, which continuously pulls the pump body, causes the pump body to be unevenly stressed, indirectly aggravates the vibration and wear of the pump body, and affects the service life of the centrifugal pump.

[0034] As shown in the installation process, Figure 1 first, the bolt 23 is fixed firmly according to the ground preset installation point, then the through slot 22 on the two installation blocks 21 of the base 1 is aligned with the fixed bolt 23, the bolt 23 is smoothly inserted through the through slot 22, and the base 1 is initially erected at the installation position. When it is found that the base 1 has a radial deviation from the preset installation position, causing the flange of the centrifugal pump and the flange of the pipeline to be unable to be accurately connected, the base 1 can be adjusted horizontally along the reserved gap of the through slot 22, the position of the base 1 is slowly adjusted, until the flange of the centrifugal pump and the flange of the pipeline are completely aligned and accurately connected, to ensure that there is no deviation and misalignment at the connection position. After the position is determined, the nut 24 on the bolt 23 is tightened, the nut 24 is tightly attached to the installation block 21, the installation block 21 is firmly fixed on the bolt 23, and the overall fixing operation of the base 1 is completed.

[0035] Through the cooperation of the installation block 21 and the through slot 22, the radial position deviation that occurs during installation can be effectively compensated, without the need for secondary adjustment of the ground preset installation point or additional punching and modification, greatly improving the installation convenience of the centrifugal pump. At the same time, stable and tight connection between the centrifugal pump and the pipeline can be ensured, the adverse effects of installation stress on the operation process of the centrifugal pump can be effectively reduced, the probability of pump body vibration, medium leakage and other faults caused by installation deviation can be reduced, the running stability and reliability of the centrifugal pump after installation can be further improved, and the overall service life of the equipment can be prolonged.

[0036] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A horizontal pipeline centrifugal pump comprising a base (1), characterized in that: The both sides of the base (1) are provided with mounting assemblies (2), a motor (3) is fixed on the base (1), a shaft coupling (4) is fixed on the output end of the motor (3), an impeller blade (6) is fixed on the end side of the shaft coupling (4), a centrifugal pump body (5) is fixed on the base (1), the impeller blade (6) is coaxially arranged with the centrifugal pump body (5), a monitoring assembly (7) is installed on the centrifugal pump body (5), the monitoring assembly (7) comprises a sleeve (71) which is fixedly embedded on the centrifugal pump body (5), the sleeve (71) is hollow inside, a slide rod (73) is slidably connected in the sleeve (71), and an arc-shaped abutting plate (76) is fixed on the end side of the slide rod (73).

2. A horizontal tubular centrifugal pump according to claim 1, characterized in that: A pressure sensor one (72) is fixed on the inner wall of the sleeve (71), an abutting ball (75) is fixed on the other end of the slide rod (73), the abutting ball (75) is coaxially arranged with the pressure sensor one (72), a spring (74) is installed between the slide rod (73) and the pressure sensor one (72), one end of the spring (74) is fixedly connected with the slide rod (73), and the other end of the spring (74) is fixedly connected with the pressure sensor one (72).

3. A horizontal tubular centrifugal pump according to claim 2, characterized in that: A wedge-shaped groove (77) is formed in the slide rod (73), a groove (78) is formed in the sleeve (71), a pressure sensor two (79) is fixed on the inner wall of the groove (78), a compression spring (710) is fixed on the inner wall of the groove (78), a wedge-shaped block (711) is fixed on the bottom surface of the compression spring (710), and the wedge-shaped block (711) is matched with the wedge-shaped groove (77).

4. A horizontal tubular centrifugal pump according to claim 3, characterized in that: An abutting rod (712) is fixed on the top surface of the wedge-shaped block (711), the abutting rod (712) is coaxially arranged with the pressure sensor two (79), and the wedge-shaped block (711) is slidably connected with the groove (78).

5. A horizontal tubular centrifugal pump according to claim 4, characterized in that: An alarm (8) is installed on the base (1), and the alarm (8), the pressure sensor one (72) and the pressure sensor two (79) are electrically connected.

6. A horizontal tubular centrifugal pump according to claim 1, characterized in that: The mounting assembly (2) comprises two groups of mounting blocks (21) which are fixed on the both sides of the base (1), a through groove (22) is formed in each mounting block (21), a bolt (23) is inserted into the through groove (22), a nut (24) is threadedly mounted on the bolt (23), and the nut (24) is attached to the mounting block (21).

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