MD1100Z - Multistage centrifugal pump - Google Patents

Multistage centrifugal pump Download PDF

Info

Publication number
MD1100Z
MD1100Z MDS20160063A MDS20160063A MD1100Z MD 1100 Z MD1100 Z MD 1100Z MD S20160063 A MDS20160063 A MD S20160063A MD S20160063 A MDS20160063 A MD S20160063A MD 1100 Z MD1100 Z MD 1100Z
Authority
MD
Moldova
Prior art keywords
disc
rotor
counterbody
disk
centrifugal pump
Prior art date
Application number
MDS20160063A
Other languages
Romanian (ro)
Russian (ru)
Inventor
Сергей ГЕРАСИМЕНКО
Виктор МАГЛА
Original Assignee
Dascom Prim О.О.О.
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 Dascom Prim О.О.О. filed Critical Dascom Prim О.О.О.
Priority to MDS20160063A priority Critical patent/MD1100Z/en
Publication of MD1100Y publication Critical patent/MD1100Y/en
Publication of MD1100Z publication Critical patent/MD1100Z/en

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to hydraulic machines, in particular to pumps that may be used for pumping liquids.The multistage centrifugal pump includes a housing (1), made of sections separated by intermediate discs (6), each section is provided with a rotor (2), mounted on a drive shaft, passing through the housing with the possibility of axial movement and including a driving disk (4) and a driven disk (5), closure elements, chambers and inlet and outlet covers, pipe bends (7) with liners (8). Each section is provided with a hydrodynamic bearing (10), which comprises an operating disc (11), on one surface of which are made grooves (12), and a counterbody (13), made in the form of a disk, proportional to the operating disc (11) with which form the friction pair, at the same time the operating disc (11) abuts against the intermediate disk (6), and the counterbody (13) - against the coating surface of the driving disc (4) of the rotor (2).

Description

Invenţia se referă la maşinile hidraulice, în special la pompe, care pot fi utilizate pentru pomparea lichidelor. The invention relates to hydraulic machines, in particular to pumps, which can be used for pumping liquids.

Sunt cunoscute pompe centrifuge de presiune mare, care conţin dispozitive de ghidare, fixate succesiv în corpul pompei, şi rotoare, la care dimensiunile tuturor elementelor dispozitivelor de ghidare şi ale rotoarelor sunt egale. Rotoarele sunt unite între ele cu ajutorul bucşelor de distanţare şi a piuliţei fixate pe arborele pompei, efortul axial de la rotoare este perceput de către lagărele motorului electric [1]. High-pressure centrifugal pumps are known, which contain guide devices, successively fixed in the pump body, and rotors, in which the dimensions of all elements of the guide devices and the rotors are equal. The rotors are connected to each other using spacers and a nut fixed on the pump shaft, the axial force from the rotors is perceived by the bearings of the electric motor [1].

Dezavantajele acestor pompe constau în aceea că fabricarea pieselor pentru ele necesită o exactitate sporită, o asamblare minuţioasă, ceea ce duce la sporirea considerabilă a cheltuielilor de producere a produsului. The disadvantages of these pumps are that the manufacture of parts for them requires increased accuracy and meticulous assembly, which leads to a considerable increase in the cost of producing the product.

Cea mai apropiată soluţie este pompa centrifugă multietajată, care include câteva secţiuni, despărţite prin nişte discuri intermediare. Fiecare secţiune este dotată cu un racord, un rotor instalat pe un arbore de acţionare cu posibilitatea deplasării axiale, elemente de etanşare, camere, capace de admisiune şi de evacuare. Rotorul se compune dintr-un disc conducător şi unul condus. Pe discul conducător este instalat un inel de etanşare, care împreună cu discul intermediar formează un lagăr axial şi etansarea frontală [2]. The closest solution is the multistage centrifugal pump, which includes several sections, separated by intermediate discs. Each section is equipped with a connection, a rotor installed on a drive shaft with the possibility of axial movement, sealing elements, chambers, inlet and outlet covers. The rotor consists of a driving disc and a driven one. A sealing ring is installed on the driving disc, which together with the intermediate disc forms an axial bearing and front seal [2].

Dezavantajele acestei pompe constau în aceea că forţele axiale distrug rapid inelul de etanşare, ceea ce înrăutăţeşte funcţionarea lagărului axial şi a etanşării frontale şi necesită lucrări de reparaţie, aceasta face exploatarea pompei mai scumpă. The disadvantages of this pump are that axial forces quickly destroy the sealing ring, which worsens the operation of the axial bearing and the front seal and requires repair work, which makes the pump operation more expensive.

Problema pe care o rezolvă pezenta invenţie constă în crearea unei pompe centrifuge multietajate simple în fabricare, sigure în exploatare şi cu un coeficient de eficienţă înalt. The problem solved by the present invention consists in creating a multistage centrifugal pump that is simple to manufacture, safe to operate and has a high efficiency coefficient.

Pompa centrifugă multietajată, conform invenţiei, înlătură dezavantajele menţionate mai sus prin aceea că include un corp, executat din secţiuni separate prin discuri intermediare, fiecare secţiune fiind dotată cu un rotor, instalat pe un arbore de acţionare, care trece prin corp cu posibilitatea deplasării axiale şi care include un disc conducător şi un disc condus, elemente de etanşare, camere şi capace de admisiune şi de evacuare, racorduri cu cuzinet. Fiecare secţiune este dotată cu un lagăr hidrodinamic, care conţine un disc de lucru, pe una din suprafeţele căruia sunt executate nişte caneluri, şi un contracorp, executat în formă de disc, proporţional cu discul de lucru cu care formează perechea de frecare, totodată discul de lucru este alipit de discul intermediar, iar contracorpul de suprafaţa de acoperire a discului conducător al rotorului. The multistage centrifugal pump, according to the invention, eliminates the above-mentioned disadvantages by including a body, made of sections separated by intermediate discs, each section being equipped with a rotor, installed on a drive shaft, which passes through the body with the possibility of axial movement and which includes a driving disc and a driven disc, sealing elements, chambers and inlet and outlet covers, connections with a bushing. Each section is equipped with a hydrodynamic bearing, which contains a working disc, on one of the surfaces of which some grooves are made, and a counterbody, made in the form of a disc, proportional to the working disc with which it forms the friction pair, at the same time the working disc is attached to the intermediate disc, and the counterbody to the covering surface of the driving disc of the rotor.

Rotoarele tuturor secţiunilor pompei sunt ampalsate pe arbore cu posibilitatea deplasării axiale. La funcţionarea pompei lagărul hidrodinamic şi contracorpul său se potrivesc perfect unul cu celălalt, asigurând alunecarea şi formând concomitent lagărul axial şi lagărul de alunecare. The rotors of all pump sections are mounted on the shaft with the possibility of axial movement. When the pump is operating, the hydrodynamic bearing and its counter body fit perfectly with each other, ensuring sliding and simultaneously forming the axial bearing and the sliding bearing.

Rezultatul tehnic al invenţiei constă în micşorarea pierderilor de energie din cauza frecării, mărirea rezistenţei la uzură a pieselor, mărirea coeficientului de eficienţă a pompei şi, respectiv, creşterea duratei de lucru a pompei. The technical result of the invention consists in reducing energy losses due to friction, increasing the wear resistance of the parts, increasing the efficiency coefficient of the pump and, respectively, increasing the working life of the pump.

Invenţia se explică prin desenele din fig. 1-2, care reprezintă: The invention is explained by the drawings in Fig. 1-2, which represent:

- fig. 1, pompa centrifugă multietajată în secţiune longitudinală; - Fig. 1, multistage centrifugal pump in longitudinal section;

- fig. 2, lagărul hidrodinamic. - Fig. 2, hydrodynamic bearing.

Pompa centrifugă multietajată include un corp 1 cu o cavitate de admisiune A şi o cavitate de evacuare B, executat din secţiuni separate prin discuri intermediare 6, fiecare secţiune fiind dotată cu un rotor 2, instalat pe un arbore de acţionare 3, care trece prin corpul 1 cu posibilitatea deplasării axiale şi care include un disc conducător 4 şi un disc condus 5, elemente de etanşare, camere şi capace de admisiune şi de evacuare, racorduri 7 cu cuzinet 8. Fiecare secţiune este dotată cu un lagăr hidrodinamic 10, care conţine un disc de lucru 11, pe una din suprafeţele căruia sunt executate nişte caneluri 12, şi un contracorp 13, executat în formă de disc, proporţional cu discul de lucru 11 cu care formează perechea de frecare, totodată discul de lucru 11 este alipit de discul intermediar 6, iar contracorpul 13 de suprafaţa de acoperire a discului conducător 4 al rotorului 2. Canelurile 12 de pe suprafaţa discului de lucru 11 sunt executate în formă de spirală. The multistage centrifugal pump includes a body 1 with an inlet cavity A and an outlet cavity B, made of sections separated by intermediate discs 6, each section being equipped with a rotor 2, installed on a drive shaft 3, which passes through the body 1 with the possibility of axial movement and which includes a driving disc 4 and a driven disc 5, sealing elements, inlet and outlet chambers and covers, connections 7 with a bearing 8. Each section is equipped with a hydrodynamic bearing 10, which contains a working disc 11, on one of the surfaces of which some grooves 12 are made, and a counterbody 13, made in the shape of a disc, proportional to the working disc 11 with which it forms the friction pair, at the same time the working disc 11 is attached to the intermediate disc 6, and the counterbody 13 to the covering surface of the driving disc 4 of the rotor 2. The grooves 12 on the surface of the working disk 11 are made in a spiral shape.

Pompa fucntioneaza în modul următor. The pump operates in the following mode.

La punerea în funcţiune a motorului, rotoarele secţiunilor 2 încep să se rotească, antrenând lichidul din cavitatea de admisiune А şi prin racordul 7 îl direcţionează în cavitatea de evacuare В. Totodată rotorul 2, sub acţiunea eforturilor axiale formate, se deplasează de-a lungul arborelui, iar discul de lucru 11 al lagărului hidrodinamic 10 şi contracorpul său 13 vin în contact şi asigură un regim de alunecare cu formarea unei fante înguste pentru evacuarea lichidului, formând lagărul axial de alunecare. When the engine is started, the rotors of the sections 2 begin to rotate, drawing the liquid from the inlet cavity А and directing it through the connection 7 into the outlet cavity В. At the same time, the rotor 2, under the action of the axial forces formed, moves along the shaft, and the working disk 11 of the hydrodynamic bearing 10 and its counterbody 13 come into contact and ensure a sliding regime with the formation of a narrow slot for the liquid to be discharged, forming the axial sliding bearing.

Calculele tehnico-economice realizate confirmă eficacitatea economică mai înaltă a invenţiei revendicate în comparaţie cu cea mai apropiată soluţie. The technical and economic calculations performed confirm the higher economic effectiveness of the claimed invention compared to the closest solution.

1. MD 2128 G2 2003.03.31 1. MD 2128 G2 2003.03.31

2. Каталог фирмы ГРУНДФОС, Германия, 1988 2. Каталог фирмы ГРУНДФОС, Германия, 1988

Claims (2)

1. Pompă centrifugă multietajată, care include un corp (1), executat din secţiuni separate prin discuri intermediare (6), fiecare secţiune fiind dotată cu un rotor (2), instalat pe un arbore de acţionare (3), care trece prin corp (1) cu posibilitatea deplasării axiale şi care include un disc conducător (4) şi un disc condus (5), elemente de etanşare, camere şi capace de admisiune şi de evacuare, racorduri (7) cu cuzinet (8), caracterizată prin aceea că fiecare secţiune este dotată cu un lagăr hidrodinamic (10), care conţine un disc de lucru (11), pe una din suprafeţele căruia sunt executate nişte caneluri (12), şi un contracorp (13), proporţional cu discul de lucru (11) cu care formează perechea de frecare, totodată discul de lucru (11) este alipit de discul intermediar (6), iar contracorpul (13) de suprafaţa de acoperire a discului conducător (4) al rotorului (2).1. Multistage centrifugal pump, which includes a body (1), made of sections separated by intermediate discs (6), each section being equipped with a rotor (2), installed on a drive shaft (3), which passes through the body (1) with the possibility of axial movement and which includes a driving disc (4) and a driven disc (5), sealing elements, chambers and inlet and outlet covers, connections (7) with a bearing (8), characterized in that each section is equipped with a hydrodynamic bearing (10), which contains a working disc (11), on one of the surfaces of which some grooves (12) are made, and a counterbody (13), proportional to the working disc (11) with which it forms the friction pair, at the same time the working disc (11) is attached to the intermediate disc (6), and the counterbody (13) to the covering surface of the driving disc (4) of the rotor (2). 2. Pompă centrifugă multietajată, conform revendicării 1, caracterizată prin aceea că canelurile (12) de pe suprafaţa discului de lucru (11) sunt executate în formă de spirală.2. Multistage centrifugal pump according to claim 1, characterized in that the grooves (12) on the surface of the working disk (11) are made in a spiral shape.
MDS20160063A 2016-05-05 2016-05-05 Multistage centrifugal pump MD1100Z (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MDS20160063A MD1100Z (en) 2016-05-05 2016-05-05 Multistage centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MDS20160063A MD1100Z (en) 2016-05-05 2016-05-05 Multistage centrifugal pump

Publications (2)

Publication Number Publication Date
MD1100Y MD1100Y (en) 2016-11-30
MD1100Z true MD1100Z (en) 2017-06-30

Family

ID=57424898

Family Applications (1)

Application Number Title Priority Date Filing Date
MDS20160063A MD1100Z (en) 2016-05-05 2016-05-05 Multistage centrifugal pump

Country Status (1)

Country Link
MD (1) MD1100Z (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1483098A1 (en) * 1987-06-08 1989-05-30 Предприятие П/Я А-3556 Centrifugal pump
RU2076957C1 (en) * 1994-08-09 1997-04-10 Яков Львович Любин Multi-stage centrifugal pump
MD2128G2 (en) * 2001-08-30 2003-10-31 Сергей ГЕРАСИМЕНКО Multistage centrifugal pump
MD2681F2 (en) * 2002-09-09 2005-01-31 Serghei GHERASIMENCO Multistage centrifugal pump
MD2682F2 (en) * 2002-07-17 2005-01-31 Serghei GHERASIMENCO   Centrifugal pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1483098A1 (en) * 1987-06-08 1989-05-30 Предприятие П/Я А-3556 Centrifugal pump
RU2076957C1 (en) * 1994-08-09 1997-04-10 Яков Львович Любин Multi-stage centrifugal pump
MD2128G2 (en) * 2001-08-30 2003-10-31 Сергей ГЕРАСИМЕНКО Multistage centrifugal pump
MD2682F2 (en) * 2002-07-17 2005-01-31 Serghei GHERASIMENCO   Centrifugal pump
MD2681F2 (en) * 2002-09-09 2005-01-31 Serghei GHERASIMENCO Multistage centrifugal pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Каталог фирмы ГРУНДФОС, Германия, 1988 *

Also Published As

Publication number Publication date
MD1100Y (en) 2016-11-30

Similar Documents

Publication Publication Date Title
EP3828415B1 (en) Internal gear pump
CN103883520A (en) Rotor type immersible pump with eccentric shaft directly connected with motor
US2283844A (en) Pump
US1334461A (en) Centrifugal pump
CN105422444A (en) Multi-stage large-flow sliding vane pump
MD1100Z (en) Multistage centrifugal pump
CN215409378U (en) Oil return mechanism for electric control silicone oil pump
RU116188U1 (en) SCREW MACHINE
RU181055U1 (en) VORTEX PUMP WORKING STEP
RU2030641C1 (en) Centrifugal submerged pump unit
GB1424993A (en) Hydraulic pump or motor
CN104806529A (en) Axial-force self-balancing multi-stage centrifugal pump
CN109404276B (en) Double-acting vane pump
CN102979727B (en) Wear-resistant light-duty steering vane pump for heavy-duty truck
RU74674U1 (en) SUBMERSIBLE Borehole MULTI-STAGE CENTRIFUGAL PUMP AND PUMP WHEEL
RU2536736C1 (en) Gear wheel pump for fluid pumping
RU187257U1 (en) MULTI-STAGE VORTEX PUMP WITH UNITED STATORS
MD2128F1 (en) Multistage centrifugal pump
RU2244169C2 (en) Welded impeller of centrifugal pump
RU124747U1 (en) PUMP
RU112297U1 (en) PUMP
RU2564961C2 (en) Vane-type pump
CN104314829A (en) Centrifugal pump
RU2594247C1 (en) Mid stage impeller of centrifugal pump
RU2567533C1 (en) Centrifugal gear-type pump with external engagement

Legal Events

Date Code Title Description
FG9Y Short term patent issued
ND4Y Validity of short term patent extended [from 6 to 10 years]

Expiry date: 20260505

KA4Y Short-term patent lapsed due to non-payment of fees (with right of restoration)