CN203516171U - Balance backwater cooling type thrust bearing component of centrifugal water injection pump - Google Patents

Abstract

The utility model discloses a balance backwater cooling type thrust bearing component of a centrifugal water injection pump. The balance backwater cooling type thrust bearing component of the centrifugal water injection pump comprises a thrust bearing body (15), a thrust bearing cover (16), a bearing bush (13) and a thrust bearing (11), wherein a water cooling cavity (12) is formed in the thrust bearing body (15), and a water inlet connector (17) and a water return connector (18) are formed in the thrust bearing body (15) and located on the two sides of the water cooling cavity (12). Heat produced when the thrust bearing component operates is cooled through balance water in a balance cavity of a discharge section shell of the centrifugal water injection pump, then the balance water is carried back to an intake cavity of an intake section shell of the centrifugal water injection pump, and therefore the temperature of the thrust bearing component is controlled within the normal range, the maintenance cost of the centrifugal water injection pump is lowered, and the service life of the whole centrifugal water injection pump is prolonged.

Description

The balance backwater cooling type thrust bearing parts of centrifugal water-injection pump

Technical field

The utility model relates to centrifugal pump, specifically relates to a kind of thrust bearing parts 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 the balance backwater cooling type thrust bearing parts of a kind of radiating effect centrifugal water-injection pump obvious, simple in structure are provided.

The utility model object realizes by following technical solution: the balance backwater cooling type thrust bearing parts of centrifugal water-injection pump, comprise thrust bearing body, thrust bearing cap, bearing shell, thrust bearing, in this thrust bearing body, there is water cooling chamber, in the thrust bearing body of described thrust bearing parts and in the both sides in described water cooling chamber, be respectively equipped with into water interface, backwater interface.

Adopt after the utility model structure, equilibrirm water in the counter balance pocket of the Spit Section housing of centrifugal water-injection pump 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 will be delivered in the suction chamber of the suction casing housing that heat on equilibrirm water and equilibrirm water bring back to centrifugal water-injection pump 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 assembly structure schematic diagram of the present utility model.

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

Embodiment

Known with reference to Fig. 1, Fig. 2, the balance backwater cooling type thrust bearing parts 10 of the utility model centrifugal water-injection pump, comprise thrust bearing body 15, thrust bearing cap 16, bearing shell 13, thrust bearing 11, in this thrust bearing body 15, there is water cooling chamber 12, in described thrust bearing body 15 and in the both sides in described water cooling chamber 12, be respectively equipped with into water interface 17, backwater interface 18.Described water inlet interface 17 connects the counter balance pocket 8 of the Spit Section housing 7 of this centrifugal water-injection pump by balance intake pipe 14, described backwater interface 18 connects the suction chamber 4 of the suction casing housing 3 of this centrifugal water-injection pump by balanced water returning pipe 6.

This centrifugal water-injection pump comprises 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), and intermediate section housing 5, suction casing housing 3, Spit Section housing 7 are configured to housing parts.Equilibrirm water (balance backwater) enters in the water cooling chamber 12 of thrust bearing body 15 from the counter balance pocket 8 of the Spit Section housing 7 of centrifugal water-injection pump by balance intake pipe 14, the heat of cooling thrust bearing parts 10 generations in service, then by backwater interface 18, by balanced water returning pipe 6, being delivered to heats on balance backwater, brought in the suction chamber 4 of housing suction casing 3 of centrifugal water-injection pump, thereby realized the object of the cooling thrust bearing parts 10 of balance backwater.

Claims (2)

1. the balance backwater cooling type thrust bearing parts of centrifugal water-injection pump, comprise thrust bearing body (15), thrust bearing cap (16), bearing shell (13), thrust bearing (11), in this thrust bearing body (15), there is water cooling chamber (12), it is characterized in that: in described thrust bearing body (15) and in the both sides in described water cooling chamber (12), be respectively equipped with into water interface (17), backwater interface (18).

2. the balance backwater cooling type thrust bearing parts of centrifugal water-injection pump as claimed in claim 1, it is characterized in that: described water inlet interface (17) connects the counter balance pocket (8) of the Spit Section housing (7) of this centrifugal water-injection pump by balance intake pipe (14), described backwater interface (18) connects the suction chamber (4) of the suction casing housing (3) of this centrifugal water-injection pump by balanced water returning pipe (6).

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