CN203516172U

CN203516172U - Balance water-return cooling type centrifugal water injection pump

Info

Publication number: CN203516172U
Application number: CN201320602777.6U
Authority: CN
Inventors: 池庆杰; 沈水钦; 倪秀栋
Original assignee: ZHEJIANG KE'ER PUMP SHARE CO Ltd
Current assignee: ZHEJIANG KE'ER PUMP SHARE CO Ltd
Priority date: 2013-09-26
Filing date: 2013-09-26
Publication date: 2014-04-02
Anticipated expiration: 2023-09-26

Abstract

The utility model discloses a balance water-return cooling type centrifugal water injection pump. The balance water-return cooling type centrifugal water injection pump comprises a suction casing (3), a middle casing, a discharge casing (7), a rotor component, a bearing support component and a thrust bearing component (10). A water cooling cavity (12) is formed in a thrust bearing body (15) of the thrust bearing component. A water inflow connector (17) and a water return connector (18) are formed in the two sides of the water cooling cavity respectively inside the thrust bearing body of the thrust bearing component. The water inflow connector is connected with a balance cavity (8) of the discharge casing (7) through a balance water inlet pipe (14), and the water return connector is connected with a suction cavity (4) of the suction casing through a balance water return pipe (6). According to the balance water-return cooling type centrifugal water injection pump, the heat generated during operation of the balance water cooling thrust bearing component is utilized, and balance water is taken back to the suction cavity of the suction casing, so that the temperature of the thrust bearing component is controlled to be within the normal range, the pump maintenance cost is reduced, and the service life of the whole pump is prolonged.

Description

Balance backwater cooling type centrifugal water-injection pump

Technical field

The utility model relates to centrifugal pump, specifically relates to a kind of horizontal multi-stage centrifugal water-injection pump.

Background technique

At present, horizontal multi-stage centrifugal water-injection pump is applied in some does not both at home and abroad have condition to provide in the situation of external bearing cooling water, and the bearing part of this centrifugal pump all adopts air-cooled structure to dispel the heat.The horizontal centrifugal water injection pump bearing part bigger than normal to power; especially thrust bearing parts; this air-cooled heat dissipation structure to the difficult control of temperature of these thrust bearing parts in normal range (NR); can make thrust bearing parts under the state in excess Temperature, move for a long time; because the load-carrying ability of thrust bearing parts reduces and can make thrust bearing parts easily break down; therefore cause centrifugal pump group to be shut down, pump maintenance cost is improved and the shortening in complete machine working life.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and provides a kind of radiating effect balance backwater cooling type centrifugal water-injection pump obvious, simple in structure.

The utility model object realizes by following technical solution: balance backwater cooling type centrifugal water-injection pump, comprise suction casing housing, intermediate section housing, Spit Section housing, rotor part, bearing bracket parts, thrust bearing parts, in the thrust bearing body of these thrust bearing parts, there is water cooling chamber, in the thrust bearing body of described thrust bearing parts, and be respectively equipped with into water interface in the both sides in described water cooling chamber, backwater interface, described water inlet interface connects the counter balance pocket of Spit Section housing by balance intake pipe, described backwater interface connects the suction chamber of suction casing housing by balanced water returning pipe.

Adopt after the utility model structure, equilibrirm water in the counter balance pocket of Spit Section housing is by balance intake pipe, water inlet interface enters in the water cooling chamber of thrust bearing body, heat with the generation in service of direct cooling thrust bearing parts, and then the heat and the equilibrirm water that are delivered on equilibrirm water are brought back in the suction chamber of suction casing housing by balanced water returning pipe by backwater interface, thereby reached the object of the cooling thrust bearing parts of balance backwater, the temperature of thrust bearing parts is controlled in normal range (NR), thereby reduce pump maintenance cost, extended the working life of complete machine.

Accompanying drawing explanation

Below in conjunction with accompanying drawing and mode of execution, the utility model is described in further detail.

Fig. 1 is the utility model balance backwater cooling type centrifugal water-injection pump structure schematic diagram.

Fig. 2 is the A-A sectional view of the thrust bearing parts in Fig. 1.

Embodiment

With reference to Fig. 1, Fig. 2 is known, the utility model balance backwater cooling type centrifugal water-injection pump, comprise suction casing housing 3, intermediate section housing 5, Spit Section housing 7, rotor part 1, bearing bracket parts 9 (containing mechanical sealing assembly), thrust bearing parts 10 (and bearing part 2), in the thrust bearing body 15 of these thrust bearing parts 10, there is water cooling chamber 12, in the thrust bearing body 15 of described thrust bearing parts 10, and be respectively equipped with into water interface 17 in the both sides in described water cooling chamber 12, backwater interface 18, described water inlet interface 17 connects the counter balance pocket 8 of Spit Section housing 7 by balance intake pipe 14, described backwater interface 18 connects the suction chamber 4 of suction casing housing 3 by balanced water returning pipe 6.

Wherein: intermediate section housing 5, suction casing housing 3, Spit Section housing 7 are configured to housing parts.Thrust bearing parts 10 consist of thrust bearing body 15, thrust bearing cap 16, bearing shell 13, thrust bearing 11.Equilibrirm water (balance backwater) enters in the water cooling chamber 12 of thrust bearing body 15 from the counter balance pocket 8 of Spit Section housing 7 by balance intake pipe 14, the heat of cooling thrust bearing parts 10 generations in service, then the heats that are delivered on balance backwater by balanced water returning pipe 6 handles by backwater interface 18 are brought in the suction chamber 4 of housing suction casing 3, thereby have realized the object of the cooling thrust bearing parts 10 of balance backwater.

Claims

1. balance backwater cooling type centrifugal water-injection pump, comprise suction casing housing (3), intermediate section housing (5), Spit Section housing (7), rotor part (1), bearing bracket parts (9), thrust bearing parts (10), in the thrust bearing body (15) of these thrust bearing parts (10), there is water cooling chamber (12), it is characterized in that: in the thrust bearing body (15) of described thrust bearing parts (10), and be respectively equipped with into water interface (17) in the both sides in described water cooling chamber (12), backwater interface (18), described water inlet interface (17) connects the counter balance pocket (8) of Spit Section housing (7) by balance intake pipe (14), described backwater interface (18) connects the suction chamber (4) of suction casing housing (3) by balanced water returning pipe (6).