WO2020026263A1 - Châssis de connexion intégré muni d'un couvercle porteur - Google Patents

Châssis de connexion intégré muni d'un couvercle porteur Download PDF

Info

Publication number
WO2020026263A1
WO2020026263A1 PCT/IN2019/050495 IN2019050495W WO2020026263A1 WO 2020026263 A1 WO2020026263 A1 WO 2020026263A1 IN 2019050495 W IN2019050495 W IN 2019050495W WO 2020026263 A1 WO2020026263 A1 WO 2020026263A1
Authority
WO
WIPO (PCT)
Prior art keywords
integrated
frame
bearing cover
bearing
pump assembly
Prior art date
Application number
PCT/IN2019/050495
Other languages
English (en)
Inventor
Kalimuthu PERIYADURAI
Thamizhselvan ELUMALAI
Original Assignee
Cri Pumps Private Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cri Pumps Private Limited filed Critical Cri Pumps Private Limited
Publication of WO2020026263A1 publication Critical patent/WO2020026263A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0462—Bearing cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the present subject matter relates, in general, to connecting frame of pump assembly, and in particular to a centrifugal pump assembly with an integrated connecting frame with bearing cover.
  • Centrifugal pump assemblies generally include a number of components that work together to transfer energy from a rotor to a fluid.
  • centrifugal pump assemblies typically include an impeller, a stuffing box, a shaft, and a motor that are mounted in various housings/ casings and connected through various bearings, frames, etc. Assembling and dismantling of the components is a complex task requiring skilled manpower.
  • FIG. 1 shows a pump assembly as known in the prior art.
  • FIG. 2 shows a pump assembly having an integrated connecting frame with bearing cover, in accordance with an implementation of the present subject matter.
  • FIG. 3 shows a plan view of the integrated connecting frame with bearing cover, in accordance with an implementation of the present subject matter.
  • FIG. 4 shows a sectional view of the pump assembly with the integrated connecting frame with bearing cover, in accordance with an implementation of the present subject matter.
  • Fig. 5 shows a detailed view showing the point of connection of integrated connecting frame with bearing cover and bearing frame, in accordance with an implementation of the present subject matter.
  • the present subject matter relates to an integrated connecting frame with bearing cover for a pump assembly.
  • the integrated connecting frame with bearing cover is also interchangeably referred to as integrated frame herein.
  • the pump assembly may be a centrifugal pump assembly.
  • Fig. 1 shows a pump assembly 100 as known in the prior art.
  • the pump assembly 100 may be a centrifugal pump assembly.
  • the pump assembly 100 includes a casing 102, which houses an impeller, a stuffing box, and related components.
  • the casing 102 is connected to a bearing frame 104 through a connecting frame 106. Accordingly, one end of the connecting frame 106 would be connected to the bearing frame 104 and the other end would be connected to the casing 102.
  • a bearing cover 108 is first coupled to the connecting frame 106 and then coupled to the bearing frame 104. The function of the bearing cover 108 is to protect the bearings from the entry of foreign particles and collect the oil spillage.
  • a shaft (not shown in the figure) would pass through the central openings provided in the bearing frame 104, the bearing cover 108, and the connecting frame 106 and would be connected to the impeller in the casing 102 at one end. Other end of the shaft would be connected to and received drive from a motor (not shown in the figure).
  • a typical bearing cover 108 as shown in the figure includes a concentric groove 110 around the central opening to coincide with the bearings in the bearing frame to protect the bearings and collect oil spillage.
  • the connecting frame 106 includes cut-out portions 112 on a connecting member 114 to connect to the casing 102. Further, as can be seen, for assembling the pump assembly 100, the various components have to be precisely assembled together.
  • the present subject matter provides an integrated connecting frame with bearing cover having an oil spill passage in a single component.
  • This integral structure of connecting frame with bearing cover can hold the oil seal and deflector.
  • the integrated frame connects the casing of the pump assembly at one end and bearing frame at the other end.
  • the integrated connecting frame with bearing cover is a single component structure, it reduces the weight and number of components present in the machinery and it will reduce the assembly time and also reduce the inventory.
  • the oil spill passage provided in the integrated bearing cover of the integrated frame helps splashed oil to reenter the bearing frame and does not allow oil to get stagnant.
  • FIG. 2 shows a pump assembly 200 having integrated connecting frame with bearing cover, in accordance with an implementation of the present subject matter.
  • the pump assembly 200 may be a centrifugal pump assembly.
  • the pump assembly 200 includes the casing 102, which houses an impeller, a stuffing box, and related components.
  • the casing 102 is connected to a bearing frame 104 through an integrated connecting frame with bearing cover 202.
  • the integrated connecting frame with bearing cover 202 is also referred to as integrated frame 202 for ease of discussion.
  • a first end of the integrated frame 202 would be connected to the bearing frame 104 and a second end would be connected to the casing 102.
  • an integrated bearing cover 204 hereinafter also referred to as bearing cover 204, is provided around a central opening 206 of the integrated frame 202.
  • the connecting member 114 is provided to connect to the casing 102.
  • a shaft (not shown in the figure) would pass through the central openings provided in the bearing frame 104 and integrated frame 202 and would be connected to the impeller in the casing 102 at one end. Other end of the shaft would be connected to and received drive from a motor (not shown in the figure).
  • the central opening 206 of the integrated frame 202 is made of sufficient size to just accommodate the shaft and does not have to be made larger in size. As a result, leakage of pumping fluid can be reduced.
  • the integrated bearing cover 204 includes a plurality of protrusions 208 spaced by slots 210, which help in collecting oil spillage and allowing splashed oil to re-enter the bearing frame 104 as will be discussed later.
  • a cylindrical member 212 is provided in the integrated bearing cover 204 to define the central opening 206 and allow easy mounting of the integrated frame 202 on the shaft of the pump assembly 200.
  • the integrated bearing cover 204 is provided concentric to the cylindrical member 212 in this example.
  • FIG. 3 shows a plan view of the integrated connecting frame with bearing cover 202, in accordance with an implementation of the present subject matter.
  • the integrated bearing cover 204 is provided concentric to the central opening 206 at the first end of the integrated frame 202, while at the second end the integrated frame 202 includes the connecting member 114 having the cut-out portions 112 for connecting to the casing 102.
  • the integrated frame 202 has three ribs in one example. The ribs connect the integrated bearing cover 204 at the first end to the connecting member 114 at the second end.
  • a first rib 302 may be aligned perpendicular to a longitudinal axis of the shaft (not shown in the figure). Remaining two ribs 304 and 306 may be referred to as a pair of ribs. Each rib of the pair of ribs 304 and 306 may be aligned at 45 degrees on both sides of the longitudinal axis so that the liquid leaked during pump rotation can get drained out and does not get stagnant in the integrated frame 202, thereby reducing the corrosion effect.
  • provisions such as holes 308, are provided for fastening the integrated bearing cover 204, and thereby the integrated frame 202, with the bearing frame 104,
  • the fastening may be performed using bolts.
  • the integrated bearing cover 204 includes a plurality of protrusions 208-1, 208-2, 208-3, and 208-4 spaced by slots 210-1, 210-2, 210-3, and 210-4. While in this example implementation, four protrusions and slots are provided, it will be understood that the number of protrusions and slots can be varied, for example, based on diameter of central opening 206, etc.
  • Each of the protrusions 208 has a curved profile that helps in collecting the oil spillage from the bearing frame 104 and directs splashed oil towards the slots 210. Further, each of the slots 210 are substantially U-shaped with tapered edges that direct the splashed oil back into the bearing frame 104 and do not allow oil to get stagnant, thereby reducing the need for cleaning and maintenance. This is further discussed with reference to Figs. 4 and 5.
  • FIG. 4 shows a sectional view of a pump assembly 400 with an integrated connecting frame with bearing cover 202, in accordance with an implementation of the present subject matter.
  • the pump assembly 400 includes the casing 102 housing a stuffing box 402 and an impeller 404 among other components.
  • the casing 102 is connected to the integrated frame 202, which is in turn connected to the bearing frame 104.
  • a shaft 406 passes through the bearing frame 104 and the integrated frame 202 is coupled to the impeller 404.
  • the integrated bearing cover 204 covers the bearings 408 in the bearing frame 104.
  • FIG. 5 shows a detailed view of section B of Fig. 4 showing the point of connection of the integrated connecting frame with bearing cover 202 and the bearing frame 104, in accordance with an implementation of the present subject matter.
  • the central opening 206 (not marked in this figure) of the integrated frame 202 holds an oil seal 502 and a deflector 504 to control oil spillage.
  • the oil seal 502 and the deflector 504 are mounted on the shaft 406.
  • One of the slot from the slots 210 of the integrated bearing cover 204 in the integrated frame 202 is aligned with an oil passage 506, which is located at the lower end of the bearing frame 104.
  • the oil passage 506 provides a passage for re-entry of the oil and the edges of the slots 210 are tapered to ensure that the oil does not get stagnant in the integrated bearing cover 204 but flows into the oil passage 506.
  • the present subject matter provides a generally improved pump assembly, such as a centrifugal pump assembly, with the integrated connecting frame with bearing cover that reduces the work of assembling and provides a more solid structure to the equipment.
  • the integrated connecting frame with bearing cover also provides slotted passage in the integrated bearing cover which allows the re-entry of the oil splashed in the oil chamber. It reduces weight of the pump, reduces complexity in assembling and dismantling the pump, and reduces inventory costs. Further, maintenance of the pump is also easier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un châssis de connexion intégré muni d'un couvercle porteur. Un châssis intégré (202) pour un ensemble pompe centrifuge (200) comprend un couvercle porteur intégré (204) au niveau d'une première extrémité du châssis intégré (202) pour une connexion à un châssis porteur (104) de l'ensemble pompe centrifuge (200) et un élément de connexion (114) au niveau d'une seconde extrémité du châssis intégré (202) pour une connexion à une garniture (102) de l'ensemble pompe centrifuge (200). Le couvercle porteur intégré (204) est disposé concentrique à un élément cylindrique (212) définissant une ouverture centrale (206) au niveau de la première extrémité.
PCT/IN2019/050495 2018-07-31 2019-07-03 Châssis de connexion intégré muni d'un couvercle porteur WO2020026263A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201841028844 2018-07-31
IN201841028844 2018-07-31

Publications (1)

Publication Number Publication Date
WO2020026263A1 true WO2020026263A1 (fr) 2020-02-06

Family

ID=69232403

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2019/050495 WO2020026263A1 (fr) 2018-07-31 2019-07-03 Châssis de connexion intégré muni d'un couvercle porteur

Country Status (1)

Country Link
WO (1) WO2020026263A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841791A (en) * 1972-05-30 1974-10-15 Worthington Corp Adaptor and frame for a centrifugal pump
US8662551B2 (en) * 2008-06-13 2014-03-04 Weir Minerals Australia Ltd. Improvements relating to pump seal assemblies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841791A (en) * 1972-05-30 1974-10-15 Worthington Corp Adaptor and frame for a centrifugal pump
US8662551B2 (en) * 2008-06-13 2014-03-04 Weir Minerals Australia Ltd. Improvements relating to pump seal assemblies

Similar Documents

Publication Publication Date Title
US5269664A (en) Magnetically coupled centrifugal pump
CA2617657C (fr) Systemes de palier sous pression pour moteur submersible
US5857841A (en) Full-circumferential flow pump
EP2830777B2 (fr) Arrangement de séparateur
EP0168138A1 (fr) Pompe à anneau d'eau
RU2621854C2 (ru) Устройство приводного вала газотурбинного двигателя, газотурбинный двигатель и воздушное судно
KR100426146B1 (ko) 전주류형펌프군과그제조방법
DE102014106315A1 (de) Drehschieber Vakuumpumpe
EP2994644A1 (fr) Ensemble pompe pourvu d'un ensemble palier lisse
DE19954964A1 (de) Hydraulischer Turbinen-Generator
DE19948972A1 (de) Motorpumpe
DE102014011228B4 (de) Elektrische Maschine
US5301771A (en) Oil channeling in a centrifugal compressor transmission
US7748951B2 (en) Bearing housing seal system for centrifugal pumps
MXPA02001022A (es) Bomba para tubo en linea con rotor blindado sin flecha.
WO2020026263A1 (fr) Châssis de connexion intégré muni d'un couvercle porteur
DE2731451B1 (de) Fluessigkeitsringverdichter oder vakuumpumpe
US20170306982A1 (en) Split Casing Cavitation Generator
DE102021120756A1 (de) Motor und Antriebsvorrichtung
AU2016222258A1 (en) A self-lubricating pump arrangement
KR101948885B1 (ko) 멀티 노즐부에 의해 슬러지제거성을 향상시킨 펌프
DE102011077777B3 (de) Tauchpumpe und Verfahren zum Zusammenbau einer Tauchpumpe
DE102015104438B4 (de) Vakuumsystem
EP0719941A1 (fr) Pompe à double aspiration
US20050191178A1 (en) Assembly including an electric motor and a load

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19844803

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19844803

Country of ref document: EP

Kind code of ref document: A1