Electric movable supporting device for vertical pump

Abstract

The invention discloses an electric movable supporting device for a vertical pump. A guide rail is attached to the inner wall of an outer barrel, and an open groove facing a pump core is formed in the guide rail. The transmission assembly is arranged on the inner side of the guide rail, the top of the transmission assembly is in transmission connection with the driving part, one end of the supporting assembly is movably connected to the transmission assembly, and under driving of the driving part, the transmission assembly drives the supporting assembly to move in the vertical direction. The other end of the supporting assembly is provided with a vibration measuring probe. The main control module can receive detection data of the vibration measurement probe in real time and automatically adjust the magnetic force of the electric magnetic attraction piece and the position of the supporting assembly according to the vibration condition. When resonance is detected, the main control module enables the supporting sliding block to reset, the supporting sliding block is separated from the guide vane of the pump core, then the supporting sliding block moves to other guide vanes, and the supporting sliding block is made to be pressed on the other guide vanes. By means of the dynamic adjusting mechanism, damage to the pump core caused by resonance can be effectively avoided, and meanwhile it is ensured that the pump core works in the optimal operation state.

Description

Technical Field

[0001] This invention belongs to the field of water pump design, and particularly relates to an electric mobile support device for vertical pumps. Background Technology

[0002] In recent years, renewable energy has developed rapidly. To support the large-scale grid connection of renewable energy, many new thermal power projects require condensate pumps to cooperate with power plants for deep peak shaving. Under this requirement, the minimum operating frequency of condensate pumps has been reduced from 40Hz to 30Hz, or even as low as 25Hz. However, the resonant frequency of most pump manufacturers' condensate pumps is between 35-25Hz. Due to the expansion of the operating frequency range of condensate pumps, resonance often occurs during operation. To address the resonance problem that occurs in the use of condensate pumps, this invention designs an electric mobile support device. This device adjusts the rigidity of the pump core by changing the internal support position of the pump core, thereby changing its natural frequency. This device can make the natural frequency of the pump core avoid the operating frequency of the condensate pump, solving the resonance problem of the pump core at its root. Summary of the Invention

[0003] The technical objective of this invention is to provide an electrically movable support device for vertical pumps to solve the resonance problem that occurs during the use of condensate pumps.

[0004] To solve the above problems, the technical solution of the present invention is as follows: An electrically operated mobile support device for a vertical pump, the vertical pump including an outer cylinder and a pump core, the pump core being located at the center of the outer cylinder, the electrically operated mobile support device being installed on the inner wall of the outer cylinder along the vertical direction of the outer cylinder, comprising: Guide rails, drive components, transmission components, support components, and vibration probes; The guide rail is attached to the inner wall of the outer cylinder, and the guide rail has an opening groove facing the pump core; The transmission component is located inside the guide rail. The top of the transmission component is connected to the drive component. One end of the support component is movably connected to the transmission component. Under the drive of the drive component, the transmission component drives the support component to move in the vertical direction. A vibration probe is installed at the other end of the support assembly and extends out of the opening slot. The vibration probe is configured to detect the vibration of the pump core.

[0005] Specifically, the transmission assembly includes a first rolling bearing, a second rolling bearing, and a screw; the first rolling bearing and the second rolling bearing are respectively located at the top and bottom of the guide rail, one end of the screw is connected to the center of the second rolling bearing, and the other end of the screw passes through the center of the first rolling bearing and is connected to the driving component.

[0006] The driving component is an electric motor, the output end of which is connected to the screw. Under the drive of the electric motor, the screw rotates around its own center.

[0007] Specifically, the support components include an electric magnetic chuck, a support slider, and an elastic element; The electric magnetic chuck has a through hole, through which a screw passes and connects to the electric magnetic chuck. By rotating the screw, the electric magnetic chuck moves vertically. The electric magnetic suction component has a mounting groove on the side away from the through hole. A support slider is installed in the mounting groove, and the support slider is connected to the inner wall of the mounting groove via an elastic element.

[0008] Among them, the elastic element is a fastening spring.

[0009] Specifically, two vibration probes are installed on the support slider.

[0010] Each vertical pump is equipped with three electrically movable support devices, which are evenly laid on the inner wall of the outer cylinder.

[0011] More preferably, a main control module is also provided. The main control module is configured to increase the magnetic force of the electric magnetic chuck when resonance is detected by the vibration probe, so that the support slider is reset and disengaged from the guide vane of the pump core. Then, the drive component is driven to move the support assembly to another guide vane. The magnetic force of the electric magnetic chuck is then gradually reduced so that the support slider is pressed against the guide vane. The vibration amplitude of the pump core is detected by the vibration probe. If there is no significant reduction, the support assembly is moved again.

[0012] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art: The main control module of this invention can receive the detection data from the vibration probe in real time and automatically adjust the magnetic force of the electric magnetic chuck and the position of the support assembly according to the vibration conditions. When resonance is detected, the main control module increases the magnetic force of the electric magnetic chuck, causing the support slider to reset and disengage from the pump core guide vanes. Then, it drives the support assembly to move to other guide vanes, and gradually reduces the magnetic force of the electric magnetic chuck, allowing the support slider to press against the other guide vanes. Through this dynamic adjustment mechanism, damage to the pump core caused by resonance can be effectively avoided, while ensuring that the pump core operates in its optimal state. Attached Figure Description

[0013] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention.

[0014] Figure 1 This is a three-dimensional schematic diagram of an electrically operated mobile support device for a vertical pump according to the present invention. Figure 2 This is a top view schematic diagram of an electrically operated mobile support device for a vertical pump according to the present invention; Figure 3 Based on the present invention Figure 2 A cross-sectional view along the AA direction; Figure 4 This is a three-dimensional schematic diagram of the electric mobile support device of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1: Guide rail; 2: Electric magnetic suction component; 3: Support slider; 4: Fastening spring; 5: Screw; 6: Rolling bearing; 7: Vibration probe; 8: Electric motor. Detailed Implementation

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0017] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0018] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides an electric mobile support device for a vertical pump according to the present invention. The advantages and features of the invention will become more apparent from the following description and claims.

[0019] Example See Figures 1 to 3 This embodiment provides an electric moving support device for a vertical pump. The structure of the vertical pump can be simply divided into an outer cylinder and a pump core. The pump core is located at the center of the outer cylinder. In this embodiment, it is installed on the inner wall of the outer cylinder along the vertical direction of the outer cylinder. Preferably, each vertical pump is provided with three electric moving support devices, which are evenly laid on the inner wall of the outer cylinder.

[0020] Specifically, this embodiment includes: a guide rail 1, a drive component, a transmission assembly, a support assembly, and a vibration measuring probe 7. The guide rail 1 is attached to the inner wall of the outer cylinder, and an opening groove is formed on the side of the guide rail 1 facing the pump core.

[0021] The transmission component is located inside the guide rail 1. The top of the transmission component is connected to the drive component. One end of the support component is movably connected to the transmission component. Under the drive of the drive component, the transmission component drives the support component to move in the vertical direction. The other end of the support component is equipped with a vibration probe 7, which extends out of the opening slot. The vibration probe 7 is configured to detect the vibration of the pump core.

[0022] See Figure 1 Specifically, the transmission assembly includes rolling bearings 6 and a screw 5. The rolling bearings 6 are further divided into a first rolling bearing located at the top of the guide rail 1 and a second rolling bearing located at the bottom of the guide rail 1. One end of the screw 5 is connected to the center of the second rolling bearing, and the other end of the screw 5 passes through the center of the first rolling bearing and is connected to the driving component. The rolling bearings 6 bear the axial and radial forces generated by the screw 5 during operation. The driving component is a motor 8, whose output end is connected to the screw 5. Driven by the motor 8, the screw 5 can rotate around its own center.

[0023] Furthermore, the support assembly includes an electric magnetic suction element 2, a support slider 3, and an elastic element. For example... Figure 2 As shown, the electric magnetic chuck 2 has through holes extending vertically, allowing the screw 5 to pass through and connect with it. By rotating the screw 5, the electric magnetic chuck 2 can move vertically. Furthermore, a mounting groove is provided on the side of the electric magnetic chuck 2 away from the through hole. A support slider 3 is installed in the mounting groove, and the support slider 3 is connected to the inner wall of the mounting groove via a fastening spring 4. Specifically, a portion of the support slider 3 extends into the mounting groove, and under the action of the fastening spring 4, the support slider 3 presses against the side walls on both sides of the groove opening. Then, two vibration probes 7 are installed on the portion of the support slider 3 extending out of the mounting groove.

[0024] Preferably, this embodiment also includes a main control module, which is crucial for the normal implementation of this embodiment. The specific usage is described below: First, the support slider 3 is placed at the first-stage guide vane of the pump core as the initial position. At this time, the magnetic force of the electric magnetic chuck 2 is zero, and the fastening spring 4 presses the support slider 3 tightly onto the guide vane, supporting and fixing the pump core. When the vibration probe 7 detects resonance, the magnetic force of the electric magnetic chuck 2 is increased, causing the support slider 3 to reset and disengage from the pump core guide vane. Then, the drive component is driven to move the support assembly via the screw 5, moving it to another guide vane (moving at least two stages of guide vane distance). The magnetic force of the electric magnetic chuck 2 is then gradually reduced, allowing the support slider 3 to press back onto the guide vane. The vibration probe 7 detects the pump core vibration amplitude. If there is no significant reduction, the support assembly is moved again until pump core vibration is no longer detected.

[0025] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. An electrically operated mobile support device for a vertical pump, the vertical pump comprising an outer cylinder and a pump core, the pump core being located at the center of the outer cylinder, the electrically operated mobile support device being mounted on the inner wall of the outer cylinder along the vertical direction of the outer cylinder, characterized in that, include: Guide rails, drive components, transmission components, support components, and vibration probes; The guide rail is attached to the inner wall of the outer cylinder, and the guide rail has an opening groove facing the pump core; The transmission component is disposed on the inner side of the guide rail, and the top of the transmission component is connected to the driving component. One end of the support component is movably connected to the transmission component. Under the drive of the driving component, the transmission component drives the support component to move in the vertical direction. The vibration probe is mounted on the other end of the support assembly and extends out of the opening slot. The vibration probe is configured to detect the vibration of the pump core.

2. The electrically operated mobile support device for a vertical pump according to claim 1, characterized in that, The transmission assembly includes a first rolling bearing, a second rolling bearing, and a screw; the first rolling bearing and the second rolling bearing are respectively located at the top and bottom of the guide rail, one end of the screw is connected to the center of the second rolling bearing, and the other end of the screw passes through the center of the first rolling bearing and is connected to the driving component.

3. The electrically operated mobile support device for a vertical pump according to claim 2, characterized in that, The driving component is an electric motor, the output end of which is connected to the screw. Under the drive of the electric motor, the screw rotates around its own center.

4. The electrically operated mobile support device for a vertical pump according to claim 2, characterized in that, The support assembly includes an electric magnetic suction component, a support slider, and an elastic component; The electric magnetic attractor has a through hole, and the screw passes through the through hole and is connected to the electric magnetic attractor. By rotating the screw, the electric magnetic attractor moves in the vertical direction. The electric magnetic suction component has a mounting groove on the side away from the through hole, and the support slider is installed in the mounting groove. The support slider is connected to the inner wall of the mounting groove via the elastic element.

5. The electrically operated mobile support device for a vertical pump according to claim 4, characterized in that, The elastic element is a fastening spring.

6. The electrically operated mobile support device for a vertical pump according to claim 4, characterized in that, Two vibration probes are installed on the support slider.

7. The electrically operated mobile support device for a vertical pump according to claim 1, characterized in that, Each of the vertical pumps is equipped with three electric moving support devices, which are evenly distributed on the inner wall of the outer cylinder.

8. The electrically operated mobile support device for a vertical pump according to claim 1, characterized in that, A main control module is also provided. The main control module is configured to increase the magnetic force of the electric magnetic chuck when resonance is detected by the vibration probe, so that the support slider is reset and disengaged from the guide vane of the pump core. Then, the drive component is driven to move the support assembly to another guide vane. The magnetic force of the electric magnetic chuck is then gradually reduced so that the support slider is pressed against the guide vane. The vibration amplitude of the pump core is detected by the vibration probe. If there is no significant reduction, the support assembly is moved again.

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