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CN-113374699-B - Vertical electric pump convenient to maintain

CN113374699BCN 113374699 BCN113374699 BCN 113374699BCN-113374699-B

Abstract

The application relates to a vertical electric pump which is convenient to maintain. A vertical electric pump (10) for moving liquids comprises a sealed jacket (11) which encloses inside it a mechanical sector (12) comprising a suction port (13) and a delivery port (14), the mechanical sector (12) containing an assembly (19) for moving liquids comprising one or more impellers (20) alternately arranged with a diffuser (21) and keyed on a drive shaft (22), an electromechanical sector (15) comprising an electric motor (16) in turn comprising a rotor (17) and a stator (18) surrounding the rotor (17), the rotor (17) being keyed on the drive shaft (22), the electric pump (10) comprising a set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump. A set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10) is completely accessible from a single side of the electric pump (10).

Inventors

  • F. Snick
  • Stefano Tazori
  • Sarah Lucia

Assignees

  • 戴博水泵股份有限公司

Dates

Publication Date
20260508
Application Date
20210308
Priority Date
20200309

Claims (10)

  1. 1. A vertical electric pump (10) for moving liquids, comprising a sealing sheath (11) enveloping: -a mechanical section (12), the mechanical section (12) comprising a suction port (13) and a delivery port (14), the mechanical section (12) comprising an assembly (19) for moving the liquid, the assembly comprising one or more impellers (20), the one or more impellers (20) being alternately arranged with a diffuser (21) and keyed on a drive shaft (22), -An electromechanical sector (15), said electromechanical sector (15) comprising an electric motor (16) in turn comprising a rotor (17) and a stator (18) surrounding said rotor (17), said rotor (17) being keyed on said drive shaft (22), The electric pump (10) comprises a set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10), Wherein the set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10) is arranged entirely on a single side of the electric pump (10) and accessible from the outside of the electric pump (10); The electric pump (10) further comprises an expansion tank (23), the expansion tank (23) being accessible from the single side of the electric pump (10) on which the set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10) is arranged, the electric pump (10) further comprising two pressure sensors: -a first pressure sensor (25 a) fluidly connected to the suction port (13), and -A second pressure sensor (25 b) fluidly connected to the delivery port (14); Wherein the set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10) comprises a user interface (24), the second pressure sensor (25 b) and a one-way valve (26), the one-way valve (26) being fluidly interposed between the delivery port (14) and the expansion tank (23).
  2. 2. The electric pump (10) according to claim 1, characterized in that the set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10) is fully visible from a single side of the electric pump (10).
  3. 3. The electric pump (10) according to claim 1, characterized in that the sheath (11) has a substantially cylindrical shape and the expansion tank (23) and the elements of the set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10) are arranged substantially on the same side of the electric pump (10), the expansion tank (23) and the elements of the set of instruments (24, 25a, 25b, 26) for controlling and monitoring the operation of the electric pump (10) being located substantially at or near one side of the outer side surface of the sheath (11).
  4. 4. An electric pump (10) according to claim 3, characterized in that the electric pump (10) comprises: -a housing (27), said housing (27) at least partially containing an upper portion of said sheath (11), -A housing (40), the housing (40) at least partially containing an upper portion of the expansion tank (23).
  5. 5. The electric pump (10) according to claim 4, characterized in that the housing (27) is associated with the outer side surface of the sheath (11) and has a substantially flat surface (28), the surface (28) being parallel to an axis of extension (X) of the sheath (11), the surface (28) of the housing (27) accommodating the user interface (24), the user interface (24) also being substantially flat and parallel to the axis of extension (X) of the sheath (11).
  6. 6. The electric pump (10) according to claim 4, characterized in that the electric pump (10) comprises an electronic board (31), the one or more pressure sensors (25 a, 25 b) and the user interface (24) being electrically connected to the electronic board (31), the electronic board (31) being housed in the housing (27) and being substantially parallel to the user interface (24).
  7. 7. The electric pump (10) according to claim 5, characterized in that the electric pump (10) is provided with a seat (29) below the jacket (11), the seat (29) comprising two parallel manifolds (30 a, 30 b) adapted to be fluidly connected to a hydraulic system: -a first manifold (30 a), -A second manifold (30 b).
  8. 8. The electric pump (10) of claim 7, wherein the first manifold (30 a) is fluidly connected to the delivery port (14) and the second manifold (30 b) is fluidly connected to the suction port (13).
  9. 9. The electric pump (10) of claim 7, wherein an axis of extension of each of the manifolds (30 a, 30 b) is substantially parallel to the surface (28) of the housing (27).
  10. 10. The electric pump (10) according to claim 9, characterized in that the extension axis of the second manifold (30 b) is perpendicular to the extension axis (X) of the sheath (11).

Description

Vertical electric pump convenient to maintain The invention relates to a vertical electric pump (VERTICAL ELECTRIC pump). An electric pump is a device for moving a liquid, typically water, by drawing the liquid from a first zone through a suction conduit and transporting the liquid into a second zone through a transport conduit. The electric pump comprises an outer sealing sheath (external containment jacket) enveloping inside it: A mechanical section comprising a suction port and a delivery port to which suction and delivery conduits are connected, and comprising one or more impellers arranged (interleave) alternating with diffusers keyed on a drive shaft adapted to rotate the impellers for moving the liquid, -An electromechanical sector comprising an electronic board (electronic board) for controlling an electric pump and an electric motor housed in a housing, and in turn comprising a rotor from which a drive shaft extends, and a stator surrounding said rotor. In the present description, the expression "vertical electric pump" is understood to mean an electric pump having a vertical use configuration (vertical configuration for use) and a vertically extending axis, wherein the mechanical section is in a lower part of the electric pump and the electromechanical section is in an upper part of the electric pump, above the mechanical section. A vertical electric pump generally has an expansion tank (expansion tank) and a set of instruments for controlling and monitoring the operation of the electric pump, including, for example: the user interface is a visual interface of the user, One or more pressure sensors are provided, -A one-way valve (OWV) fluidly interposed between the delivery port and the expansion tank. This background art has some drawbacks. The expansion tank and the elements constituting the set of instruments are usually arranged in different positions and/or sides of the electric pump, even opposite each other, and the expansion tank and these elements are not always easily and quickly accessible and/or visible if needed and/or for maintenance. This results in a lengthy and troublesome maintenance operation. Another disadvantage lies in the fact that, because of the arrangement of these elements in different positions and/or sides of the electric pump, these elements are not always easily accessible and/or visible, the user needs to remember where the element of his interest is located and/or retrieve this information from the manual of the electric pump before he can perform any operation. This results in longer maintenance times and thus in similar time motor pump outages. Furthermore, the arrangement of the expansion tanks arranged in different positions and/or sides of the electric pump and the elements of the instrument suite for controlling and monitoring the operation of the electric pump results in a considerable space occupation. It is an object of the present invention to provide a vertical electric pump which is capable of improving the background art in one or more of the above-mentioned aspects. Within this aim, an object of the present invention is to provide a vertical electric pump having an expansion tank and elements of an instrument set for controlling and monitoring the operation of the electric pump, which can be easily and quickly accessed. It is a further object of the present invention to provide a vertical electric pump that does not require the user to remember/find information about the position of the tank and/or elements of the instrument set for controlling and monitoring the operation of the electric pump, if desired. Another object of the present invention is to provide a vertical electric pump that has a smaller space occupation than similar electric pumps of the known type. A further object of the present invention is to overcome the drawbacks of the background art in a way that can replace any existing solutions. It is a further object of the present invention to provide a vertical electric pump that is highly reliable, relatively easy to provide, and cost competitive. This aim, as well as these and other objects that will become better apparent hereinafter, are achieved by a vertical electric pump for moving liquids, comprising a sealed jacket that encloses inside it: A mechanical sector comprising a suction port and a delivery port, said mechanical sector containing an assembly for moving said liquid, comprising one or more impellers alternately arranged with a diffuser and keyed on a driving shaft, An electromechanical sector comprising an electric motor, which in turn comprises a rotor keyed on the drive shaft and a stator surrounding the rotor, The electric pump includes a set of instrumentation for controlling and monitoring the operation of the electric pump. The electric pump is characterized in that the set of instruments for controlling and monitoring the operation of the electric pump is completely accessible from a single side of the electric pump