CN218062697U - Double-stator water-filling type submersible tubular pump - Google Patents

Abstract

The utility model discloses a two stators fill ability of swimming dive through-flow pump is located the guide vane body and absorbs water and is provided with axial rotor core between the room at motor intracavity portion, and axial rotor core both sides are located the motor intracavity and are equipped with axial stator core respectively, lie in the motor intracavity portion in the axial stator core outside and all are provided with stator coil, install the rotor subassembly of being connected with axial rotor core between the middle part position of the room and the guide vane body that absorbs water. The utility model discloses overall structure has that axial distance shortens by a wide margin, the radiating effect promotes, compact structure, light in weight, characteristics such as safe and reliable, places two stator core in impeller rotor iron core both sides innovatively, thereby exempts from impeller rotor rotatory great friction loss that produces in aqueous, has improved water pump efficiency greatly, uses 2 stator core parallels simultaneously, but exclusive use during underloading has improved operating efficiency.

Description

Double-stator water-filling type submersible tubular pump

Technical Field

The utility model relates to a submerged motor pump technical field especially relates to a two stators fill ability of swimming dive through-flow pump.

Background

At present, the submersible tubular pump has two structural types, one is the submersible tubular pump matched with the traditional dry-type submersible motor, and the other is the submersible tubular pump with a built-in impeller.

The dry submersible motor and the pump body are relatively independent in the submersible tubular pump matched with the traditional dry submersible motor. The most remarkable characteristic is that the dry-type submersible motor is coaxially connected with the submersible pump, the dry-type submersible motor is arranged in a water outlet flow passage of the submersible electric pump, the dry-type submersible motor is matched to be a full-sealing structure, the inner cavity is dry air, an impeller of the pump is arranged on the water inlet side of the submersible electric pump unit, and the impeller of the pump pumps water flow to flow into the water outlet flow passage through the outer wall of the motor. The submersible electric pump with the structure has the following defects: firstly, the submersible motor is immersed in water for a long time, the sealing of the motor is difficult to guarantee, particularly, when the submersible motor is immersed in water with a deep depth, the electrical insulation performance of the motor cannot be reliably guaranteed, the risk of leakage exists, and the dry submersible motor has potential safety hazards; and secondly, the impeller of the pump is of a cantilever beam structure, namely, only one bearing fulcrum or fulcrum is arranged on the side, close to the motor, of the impeller and is directly arranged in the motor cavity. The structure requires high processing precision and poor vibration resistance. The impeller is easy to form uneven gaps on all sides, so that the rotating impeller and the fixed impeller shell are rubbed with each other. Meanwhile, the dry-type submersible motor is arranged in the water outlet flow channel, so that the water outlet flow state of pumped water flow is influenced, and the efficiency of the submersible pump is directly influenced. The traditional dry-type submersible motor is submerged for a long time and runs underwater, the maintenance is difficult, and the maintenance cost is higher

The submersible tubular pump with built-in impeller is characterized in that an impeller component or a blade of the submersible electric pump is directly fixed in an inner cavity of a water-filled submersible motor rotor and is welded with the water-filled submersible motor rotor into a whole, the whole is placed in a stator of the water-filled submersible motor, the stator of the water-filled submersible motor is fixedly arranged in a stator shell, the stator of the water-filled submersible motor and the rotor of the water-filled submersible motor are both radially and concentrically placed, the axial length is long, a stator core is assembled in the stator shell, and two axial ends of the stator shell are respectively connected with a water suction chamber and a water outlet chamber.

At present, the submersible tubular pump has two structural types, and generally adopts an alternating current induction motor. Ac induction motors have a low efficiency and a low power factor. In particular, the power factor is only attached by 25% of the rated power factor or even lower when the power factor is slightly fluctuated and is under light load or no load. Meanwhile, the submersible electric pump with built-in impeller has the following defects: because the integral rotor (the impeller component and the water-filled submersible motor rotor) rotates in water, the friction loss generated by the rotation of the impeller component in water is equivalent to the normal loss of a common water pump, and the friction loss generated by the rotation of the water-filled submersible motor rotor in water is increased loss. This friction loss is composed of two parts: the friction loss of the cylindrical surface of the rotor of the water-filled submersible motor is in direct proportion to the 4 th power of the radius of the rotor and the length of the rotor; the second is the friction loss at the rotor end face, which is proportional to the rotor radius to the power of 5. The friction loss of the cylindrical surface is about 2 times of the friction loss of the end surface, and the friction loss power of the cylindrical surface of the rotor can be calculated according to the formula of the friction loss of the disc.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two stator fill water formula dive tubular pump in order to remedy prior art's defect.

The utility model discloses a realize through following technical scheme:

the utility model provides a two stators fill ability of swimming dive tubular pump, is equipped with the guide vane body including the room that absorbs water, the one end of the room that absorbs water is equipped with the guide vane body, guide vane body surface and the room surface that absorbs water are provided with same motor chamber, motor intracavity portion is located and is provided with axial rotor core between the guide vane body and the room that absorbs water, axial rotor core both sides are located the motor intracavity and are equipped with axial stator core respectively the axial stator core outside is located the inside stator coil that all is provided with of motor chamber, installs the rotor subassembly of being connected with axial rotor core between the middle part position of the room that absorbs water and guide vane body.

And a junction box is arranged on the outer side surface of the motor cavity.

The guide vane bodies and the water suction chambers are symmetrically arranged relative to the axial rotor core.

The rotor assembly comprises a shaft, a bearing and a bearing cover are arranged outside the shaft, a hub is arranged outside the bearing cover, blades are fixedly connected to the surface of the hub, a runner cylinder is fixedly connected to the other end of each blade, and the axial rotor core is arranged on the runner cylinder.

And the two ends of the shaft are respectively fixed with a bracket, and the brackets at the two ends are respectively fixed on the water suction chamber and the guide vane body.

The flow passage cylinder is positioned between the water suction chamber and the adjacent end of the guide vane body.

The utility model has the advantages that: the utility model has the advantages of greatly shortened axial distance, improved heat dissipation effect, compact structure, light weight, safety, reliability and the like, creatively arranges the two stator cores on the two sides of the impeller rotor core, avoids the impeller rotor rotating in water to generate larger friction loss, greatly improves the efficiency of the water pump, simultaneously connects 2 stator cores in parallel for use, can be used independently when lightly loaded, and improves the operation efficiency; the axial stator core does not need a closed slot, a coil can be manufactured in advance, threading with a traditional structure is not needed, and manufacturing time is saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view of the present invention.

Fig. 3 is a schematic view of the structure of the rotor assembly of the present invention.

Detailed Description

As shown in fig. 1, 2 and 3, a double-stator water-filling submersible tubular pump comprises a water suction chamber 1, wherein a guide vane body 8 is arranged at one end of the water suction chamber 1, the outer surface of the guide vane body 8 and the outer surface of the water suction chamber 1 are provided with the same motor cavity 9, an axial rotor core 6 is arranged in the motor cavity 9 and between the guide vane body 8 and the water suction chamber 1, two sides of the axial rotor core 6 are respectively provided with an axial stator core 4 in the motor cavity 9, and a radial stator core and a radial rotor core are adopted in the prior art; one traditional stator core is disassembled into 2 stator cores, and only one stator core is electrified when the power operation is low, so that the operation power factor and the operation efficiency are improved; stator coils 5 are arranged inside a motor cavity 9 on the outer side of the axial stator core 4, and a rotor assembly 2 connected with the axial rotor core 6 is arranged between the water suction chamber 1 and the middle position of the guide vane body 8.

The outer side surface of the motor cavity 9 is provided with a junction box 3, the motor cavity is formed by two housings which are respectively connected with the guide vane body and the water suction chamber into a whole, the two housings are fixedly connected through a bolt and nut gasket assembly, and a sealing ring 7 is arranged in the middle of the two housings. The motor cavity 9 is small in size, the size of a traditional stator shell is reduced, parts are saved, and manufacturing cost is reduced.

The guide vane body 8 and the water suction chamber 1 are arranged symmetrically with respect to the axial rotor core 6.

Rotor subassembly formula structure as an organic whole, rotor subassembly 2 is including axle 21, installs bearing 22 and bearing cap 23 in the outside of axle 21, and bearing 22 includes horned contact bearing and deep groove ball bearing, installs wheel hub 24 in bearing cap 23 outside, at wheel hub 24 fixed surface be connected with blade 25, and blade 25 other end fixedly connected with runner barrel 26, axial rotor core 6 installs on runner barrel 26.

Two ends of the shaft 21 are respectively fixed with a bracket 10, and the brackets 10 at the two ends are respectively fixed on the water suction chamber 1 and the guide vane body 8. Mechanical seal structures 11 are respectively arranged at the connection parts of the two ends of the shaft 21 and the bearing covers 23.

The flow passage cylinder 26 is located between the suction chamber 1 and the guide vane body 8 near each other.

The working principle of the utility model is as follows: the stator coil 5 is electrified to generate a rotating magnetic field, and the axial rotor core 6, the runner cylinder 26, the hub 24, the blades 25 and the bearing 22 are driven to rotate through electromagnetic induction; the water suction chamber 1, the guide vane body 8 and the axial stator iron core 4 are still; water enters from the water suction chamber 1, passes through the hub 24 and the blades 25, and flows out of the guide vane body 8.

Claims (6)

1. The utility model provides a two stator formula dive tubular pumps that fill, its characterized in that: including the chamber that absorbs water, be equipped with the guide vane body in the one end of the chamber that absorbs water, guide vane external surface and the chamber surface that absorbs water are provided with same motor cavity, motor intracavity portion is located the guide vane body and absorbs water and is provided with axial rotor core between the chamber, axial rotor core both sides are located the motor cavity and are equipped with axial stator core respectively the axial stator core outside is located the motor intracavity portion and all is provided with stator coil, installs the rotor subassembly of being connected with axial rotor core between the middle part position of the chamber that absorbs water and guide vane body.

2. The dual stator water-filled submersible tubular pump of claim 1, wherein: and a junction box is arranged on the outer side surface of the motor cavity.

3. The double-stator water-filled submersible tubular pump of claim 1, wherein: the guide vane bodies and the water suction chambers are symmetrically arranged around the axial rotor core.

4. The dual stator water-filled submersible tubular pump of claim 1, wherein: the rotor assembly comprises a shaft, a bearing and a bearing cover are arranged outside the shaft, a hub is arranged outside the bearing cover, blades are fixedly connected to the surface of the hub, a runner cylinder is fixedly connected to the other end of each blade, and the axial rotor core is arranged on the runner cylinder.

5. The dual stator water-filled submersible tubular pump of claim 4, wherein: and the two ends of the shaft are respectively fixed with a bracket, and the brackets at the two ends are respectively fixed on the water suction chamber and the guide vane body.

6. The dual stator water-filled submersible tubular pump of claim 4, wherein: the flow passage cylinder is positioned between the water suction chamber and the adjacent end of the guide vane body.

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