CN115199564A - Integrated pipeline pump - Google Patents

Abstract

The invention provides an integrated pipeline pump, comprising: a pump housing, a pump impeller, a rotor assembly, and a stator assembly; a supporting shaft which is coaxial with the pump shell is arranged in the pump shell, and the pump impeller is rotationally connected with the supporting shaft; the rotor assembly is connected with the rim of the pump impeller, the inner wall surface of the pump shell is provided with a first annular groove and a second annular groove which are communicated with each other, the rotor assembly is positioned in the first annular groove, and the stator assembly is positioned in the second annular groove and is arranged opposite to the rotor assembly; an inlet channel, an annular channel and an outlet channel which are communicated with each other are formed among the rotor shell, the stator shell and the pump shell, and a first shearing channel is formed at the inlet channel. According to the integrated pipeline pump, the first shearing flow channel can shear, extrude and crush large-size impurities in the cooling fluid into small-size impurities, the impurities are effectively prevented from scratching the stator shell and the rotor shell, and the operation reliability of the integrated pipeline pump is improved.

Description

Integrated pipeline pump

Technical Field

The invention relates to the technical field of fluid machinery, in particular to an integrated pipeline pump.

Background

The integrated pipeline pump is pumping equipment which radially integrates a rim motor and a pump impeller, the rim motor is a prime mover which converts input electric energy of the integrated pipeline pump into rotary mechanical energy, and the integrated pipeline pump mainly comprises a stator assembly and a rotor assembly. An annular air gap with a certain size is formed between the stator assembly and the rotor assembly, the annular air gap is a magnetic circuit coupling channel between the stator assembly and the rotor assembly, and the annular air gap is also used as a cooling channel. The cooling fluid flows through the annular air gap between the stator assembly and the rotor assembly, carries out heat convection with the stator assembly and the rotor assembly, and derives heat of the stator assembly and the rotor assembly.

The air gap size of the air gap channel is one of important parameters of the integrated pipeline pump, the larger air gap size can cause the magnetic resistance of the rim motor to be increased and the efficiency to be reduced, and in order to improve the efficiency of the rim motor and ensure the safety of the rotor assembly and the stator assembly, the air gap size is usually reduced as far as possible on the premise of ensuring that the rotor assembly and the stator assembly do not generate movement interference. When integration tubing pump sending fluid, probably there are impurity such as silt and suspended solid in the fluid, during impurity gets into cooling channel along with cooling fluid, under the high-speed rotatory condition of rotor subassembly, impurity easily fish tail rotor housing and stator housing, cause driving motor to intake and burnt, influence the operation of tubing pump.

Disclosure of Invention

The invention provides an integrated pipeline pump, which is used for solving the problem that the existing pipeline pump cannot effectively intercept impurities in fluid in the operation process, and the impurities enter a cooling flow channel to cause poor reliability of the pipeline pump.

The invention provides an integrated pipeline pump, comprising: a pump housing, a pump impeller, a rotor assembly, and a stator assembly;

a supporting shaft which is coaxial with the pump shell is arranged in the pump shell, and the pump impeller is rotationally connected with the supporting shaft; the rotor assembly is connected with the rim of the pump impeller, the rotor assembly comprises a rotor shell, and the stator assembly comprises a stator shell;

the inner wall surface of the pump shell is provided with a first annular groove and a second annular groove which are communicated with each other, the rotor assembly is positioned in the first annular groove, and the stator assembly is positioned in the second annular groove and is arranged opposite to the rotor assembly; an inlet channel, an annular channel and an outlet channel which are communicated with each other are formed among the rotor shell, the stator shell and the pump shell;

the inlet runner is characterized in that a plurality of first annular convex ribs which are coaxially arranged are convexly arranged on the end face of the rotor shell at the inlet runner, a plurality of second annular convex ribs which are coaxially arranged are convexly arranged on the side groove wall surface of the first annular groove, the first annular convex ribs are positioned in an area defined by two adjacent second annular convex ribs, and a first shearing runner is formed between the side wall surface of at least one first annular convex rib and the side wall surface of the adjacent second annular convex rib.

According to the integrated pipeline pump provided by the invention, the side wall surface of the first annular convex rib is provided with a plurality of first grooves distributed in a circular array, the side wall surface of the second annular convex rib is provided with a plurality of second grooves distributed in a circular array, the first grooves and the second grooves are distributed in a one-to-one correspondence manner, and the first shearing flow channel is formed between the side wall surface of the first annular convex rib and the side wall surface of the adjacent second annular convex rib by the plurality of first grooves and the plurality of second grooves.

According to the integrated pipeline pump provided by the invention, the first groove is V-shaped, and the second groove is U-shaped.

According to the integrated pipeline pump provided by the invention, a second shearing flow channel is arranged between the outlet end of the inlet flow channel and the inlet end of the annular flow channel;

the outer wall surface of the rotor shell is provided with a plurality of first corrugated grooves distributed in a circular array, the bottom surfaces of the first annular grooves are provided with a plurality of second corrugated grooves distributed in a circular array, the first corrugated grooves and the second corrugated grooves are distributed in a one-to-one correspondence mode, and the plurality of first corrugated grooves and the plurality of second corrugated grooves enable the second shearing flow channel to be formed between the outer wall surface of the rotor shell and the bottom surfaces of the first annular grooves.

According to the integrated pipeline pump provided by the invention, the first corrugated groove is obliquely arranged on the outer wall surface of the rotor shell, and the second corrugated groove is obliquely arranged on the groove bottom surface of the first annular groove.

According to the integrated pipeline pump provided by the invention, a first groove top surface is formed between every two adjacent first corrugated grooves, a second groove top surface is formed between every two adjacent second corrugated grooves, and the distance between the first groove top surface and the second groove top surface is gradually reduced from the inlet end of the second shearing flow channel to the outlet end of the second shearing flow channel.

According to the integrated piping pump provided by the present invention, the distance between the first groove top surface and the second groove top surface at the inlet end of the second shear flow passage is larger than the distance between the outer wall surface of the rotor case and the groove bottom surface of the first annular groove at the outlet end of the inlet flow passage.

According to the integrated pipe pump provided by the invention, the distance between the first groove top surface and the second groove top surface at the outlet end of the second shearing flow channel is smaller than the distance between the outer wall surface of the rotor housing and the inner wall surface of the stator housing at the annular flow channel.

According to the integrated pipeline pump provided by the invention, a plurality of coaxially arranged third annular convex ribs are convexly arranged on the end surface of the rotor shell at the outlet flow passage, a plurality of coaxially arranged fourth annular convex ribs are convexly arranged on the side groove wall surface of the first annular groove, and the third annular convex ribs are positioned in a region surrounded by two adjacent fourth annular convex ribs.

According to the integrated pipeline pump provided by the invention, the outer wall surface of at least one third annular convex rib is provided with a plurality of inclined grooves distributed in a circular array, and the inclined grooves form a despin flow channel.

The invention provides an integrated pipeline pump, wherein an inlet flow channel, an annular flow channel and an outlet flow channel for cooling a motor assembly are formed among a rotor shell, a stator shell and a pump shell, a plurality of first annular convex ribs which are coaxially arranged are convexly arranged on one end surface of the rotor shell, a plurality of second annular convex ribs which are coaxially arranged are convexly arranged on the side groove wall surface of a first annular groove, and a first shearing flow channel is formed between the side wall surface of at least one first annular convex rib and the side wall surface of the adjacent second annular convex rib, so that large-size impurities in cooling fluid can be sheared, extruded and crushed into small-size impurities, the stator shell and the rotor shell are effectively prevented from being scratched by the impurities, and the operation reliability of the integrated pipeline pump is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of an integrated tubing pump provided by the present invention;

FIG. 2 is an enlarged partial view of FIG. 1 at A in accordance with the present invention;

FIG. 3 is a schematic view of the inlet flow passage of FIG. 2 according to the present invention;

FIG. 4 is a schematic cross-sectional view of a first shear flow path provided by the present invention;

FIG. 5 is a schematic cross-sectional view of a second shear flow path provided by the present invention;

FIG. 6 is a schematic structural view of an outlet flow channel provided by the present invention;

reference numerals: 1: a pump housing; 101: a second annular rib; 102: a second groove; 103: a second corrugation groove; 2: a stator assembly; 201: a stator housing; 3: a rotor assembly; 301: a rotor housing; 302: a first annular rib; 303: a first groove; 304: a first corrugation groove; 305: a third annular rib; 306: an inclined groove; 4: an impeller; 5: a stationary impeller; 6: a support shaft; 7: a cooling flow channel; 8: an inlet flow passage; 9: a first shear flow channel; 10: a second shear flow channel; 11: an annular flow passage; 12: an outlet flow passage; 13: a columnar body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An integrated in-line pump of an embodiment of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1, 2 and 3, an integrated pipe pump according to an embodiment of the present invention includes: a pump housing 1, a pump impeller 4, a rotor assembly 3 and a stator assembly 2; a supporting shaft 6 which is coaxial with the pump shell 1 is arranged in the pump shell 1, and the pump impeller 4 is rotationally connected with the supporting shaft 6; the rotor assembly 3 is connected with the rim of the pump impeller 4, the rotor assembly 3 comprises a rotor shell 301, and the stator assembly 2 comprises a stator shell 201; the inner wall surface of the pump shell 1 is provided with a first annular groove and a second annular groove which are communicated with each other, the rotor assembly 3 is positioned in the first annular groove, and the stator assembly 2 is positioned in the second annular groove and is arranged opposite to the rotor assembly 3; an inlet channel 8, an annular channel 11 and an outlet channel 12 which are communicated with each other are formed among the rotor shell 301, the stator shell 201 and the pump shell 1; a plurality of first annular convex ribs 302 which are coaxially arranged are convexly arranged on the end surface of the rotor shell 301 at the inlet runner 8, a plurality of second annular convex ribs 101 which are coaxially arranged are convexly arranged on the side groove wall surface of the first annular groove, the first annular convex ribs 302 are positioned in the area enclosed by two adjacent second annular convex ribs 101, and a first shearing runner 9 is formed between the side wall surface of at least one first annular convex rib 302 and the side wall surface of the adjacent second annular convex rib 101.

Specifically, a support shaft 6 is provided in the pump housing 1 along the axis thereof, and the pump impeller 4 is rotatably connected to the support shaft 6 via a bearing assembly. The two opposite ends of the pump housing 1 are defined as the inlet end of the pump housing 1 and the outlet end of the pump housing 1, and the fluid flows in from the inlet end of the pump housing 1 and flows out from the outlet end of the pump housing 1. The motor assembly comprises a rotor assembly 3 and a stator assembly 2, the rotor assembly 3 comprises a rotor and a rotor shell 301, the rotor is arranged in the rotor shell 301, and the rotor shell 301 is a shielding sleeve of the rotor; stator module 2 includes stator and stator housing 201, and the stator is placed in stator housing 201 in, and stator housing 201 is the housing cover of stator promptly, and stator housing 201, rotor housing 301 set up with pump casing 1 is coaxial.

The inner wall surface of the pump housing 1 is recessed towards the outer wall surface of the pump housing 1 to form a first annular groove and a second annular groove which are communicated with each other, the first annular groove forms an accommodating space for accommodating the rotor assembly 3, gaps are respectively reserved between two opposite end surfaces of the rotor housing 301 and two opposite side groove wall surfaces of the first annular groove, and two opposite end surfaces of the rotor housing 301 and two opposite side groove wall surfaces of the first annular groove form an inlet channel 8 and an outlet channel 12 for cooling fluid to pass through. The second annular groove forms the accommodation space of placing stator module 2, stator housing 201's outer wall and the tank bottom laminating setting of second annular groove, two terminal surfaces that stator housing 201 is relative set up with two side channel wall laminating settings of second annular groove, form annular runner 11 between stator housing 201's the internal face and rotor housing 301's the outer wall, entry runner 8, annular runner 11 and export runner 12 communicate in proper order, entry runner 8, annular runner and export runner 12 form and are used for carrying out refrigerated cooling runner 7 to motor element, annular runner 11 also is the air gap passageway between stator module 2 and the rotor module 3 simultaneously.

The inlet channel 8 is located at the outlet end of the pump housing 1, the outlet channel 12 is located at the inlet end of the pump housing 1, when fluid is pumped, the rotor assembly 3 drives the pump impeller 4 to rotate to do work and boost the pressure of the fluid, the pressure of the flow field at the rear end of the pump impeller 4 is higher than that of the flow field at the front end of the pump impeller 4, the rear end of the pump impeller 4 is close to the outlet end of the pump housing 1, and the front end of the pump impeller 4 is close to the inlet end of the pump housing 1. Still install stationary vane wheel 5 in the pump casing 1, stationary vane wheel 5 is close to the exit end of pump casing 1, and stationary vane wheel 5 is used for retrieving fluidic circumferential velocity, improves the hydrostatic pressure after, carries away the fluid from the exit end of pump casing 1.

Motor element drives the rotatory work of pump impeller 4 and pumps the fluid, probably has impurity such as silt in the fluid, and impurity gets into cooling channel 7 along with cooling fluid, and under the high-speed rotatory condition of rotor subassembly 3, impurity easily fish tail rotor housing 301 and stator housing 201 cause motor element to intake and burnt, and impurity also influences the rotatory stability of rotor subassembly 3 simultaneously.

The end face of the rotor shell 301 at the inlet channel 8 is convexly provided with a plurality of first annular convex ribs 302 which are coaxial with the axis of the rotor shell 301, the number of the first annular convex ribs 302 is set according to actual requirements, the side groove wall face of the first annular groove at the inlet channel 8 is convexly provided with a plurality of second annular convex ribs 101 which are coaxial with the axis of the pump shell 1, and the number of the second annular convex ribs 101 is set according to actual requirements. Enclose into the accommodation space who holds first annular fin 302 between two adjacent second annular fins 101, it can be understood that first annular fin 302 is clearance fit with second annular fin 101 to satisfy rotor assembly 3's rotation demand. A first shearing flow channel 9 for shearing and crushing impurities is formed between the side wall surface of at least one first annular convex rib 302 and the side wall surface of the adjacent second annular convex rib 101. A periodically-changing 'expanding-contracting' flow channel region is formed between the side wall surface of the first annular convex rib 302 and the side wall surface of the second annular convex rib 101 along the circumferential direction, when large-size impurities carried by cooling fluid enter the flow channel region under the condition that the rotor assembly 3 rotates, the large-size impurities are sheared, extruded and crushed into small-size impurities under the interaction of the side wall surface of the first annular convex rib 302 and the side wall surface of the second annular convex rib 101, and the small-size impurities continuously flow along with the cooling fluid and finally flow out of the outlet flow channel 12.

In the process that the cooling fluid flows through the inlet flow channel 8, large-size impurities in the cooling fluid can be sheared, extruded and broken into small-size impurities at the first shearing flow channel 9, and in the process that the cooling fluid flows through the annular flow channel 11, the stator shell 201 and the rotor shell 301 can be effectively prevented from being scratched, so that the operation reliability of the integrated pipeline pump is improved.

In the embodiment of the present invention, an inlet flow channel 8, an annular flow channel 11, and an outlet flow channel 12 for cooling the motor assembly are formed among the rotor casing 301, the stator casing 201, and the pump casing 1, a plurality of first annular ribs 302 coaxially arranged are convexly provided on one end surface of the rotor casing 301, a plurality of second annular ribs 101 coaxially arranged are convexly provided on a side groove wall surface of the first annular groove, and a first shearing flow channel 9 is formed between a side wall surface of at least one first annular rib 302 and a side wall surface of an adjacent second annular rib 101, so that large-sized impurities in the cooling fluid can be sheared and crushed into small-sized impurities, the impurities are effectively prevented from scratching the stator casing 201 and the rotor casing 301, and further, the operation reliability of the integrated pipe pump is improved.

As shown in fig. 4, in an alternative embodiment, the side wall surface of the first annular rib 302 is provided with a plurality of first grooves 303 arranged in a circular array, the side wall surface of the second annular rib 101 is provided with a plurality of second grooves 102 arranged in a circular array, the first grooves 303 and the second grooves 102 are arranged in a one-to-one correspondence, and the plurality of first grooves 303 and the plurality of second grooves 102 enable the first shearing flow channel 9 to be formed between the side wall surface of the first annular rib 302 and the side wall surface of the adjacent second annular rib 101.

Specifically, a first groove 303 is formed in a side wall surface of the first annular rib 302, an extending direction of the first groove 303 is consistent with an axial direction of the first annular rib 302, an axial line of the first annular rib 302 is coaxial with an axial line of the rotor housing 301, and the plurality of first grooves 303 are arranged on the side wall surface of the first annular rib 302 in a circular array. The second groove 102 is formed in the side wall surface of the second annular protruding rib 101, the extending direction of the second groove 102 is the same as the axial direction of the second annular protruding rib 101, the axial line of the second annular protruding rib 101 is coaxial with the axial line of the pump housing 1, and the plurality of second grooves 102 are arranged on the side wall surface of the second annular protruding rib 101 in a circular array.

The top surface sandwiched between two adjacent first grooves 303 is defined as a first groove top surface, the top surface sandwiched between two adjacent second grooves 102 is defined as a second groove top surface, the first grooves 303 and the second grooves 102 are arranged in a one-to-one correspondence manner, and the first groove top surfaces and the second groove top surfaces are arranged in a one-to-one correspondence manner. The distance between the groove bottom of the first groove 303 and the groove bottom of the second groove 102 is defined as a first distance, the distance between the top surface of the first groove and the top surface of the second groove is defined as a second distance, the first grooves 303 and the second grooves 102 form a first gap region arranged in a circular array, the top surfaces of the first grooves and the top surfaces of the second grooves form a second gap region arranged in a circular array, and therefore an 'expanded-reduced' flow passage region which periodically changes along the circumferential direction is formed between the side wall surface of the first annular convex rib 302 and the side wall surface of the second annular convex rib 101. During the rotation of the rotor assembly 3, the impurities are sheared and crushed into small-sized impurities by the large-sized impurities under the interaction of the groove wall surfaces of the first groove 303 and the second groove 102 in the process of flowing in the first gap region and the second gap region which are arranged at intervals.

The protruding a plurality of first cyclic annular fins 302 that are formed with of rotor housing 301's terminal surface, the protruding a plurality of second cyclic annular fins 101 that are formed with of the side wall of first annular groove wall, the side wall of the first cyclic annular fin 302 that is close to entry runner 8 entry end is equipped with a plurality of first recess 303 that lay for circular array, the side wall of the second cyclic annular fin 101 that is close to entry runner 8 entry end is equipped with a plurality of second recess 102 that lay for circular array, form first shearing runner 9 between the side wall of the first cyclic annular fin 302 that is close to entry runner 8 entry end and the side wall of second cyclic annular fin 101 from this, can satisfy the demand of cuting, the broken impurity of extrusion, also can avoid increasing the flow resistance of cooling fluid in entry runner 8.

In the embodiment of the invention, the side wall surface of the first annular convex rib 302 is provided with the plurality of first grooves 303 arranged in a circular array, the side wall surface of the second annular convex rib 101 is provided with the plurality of second grooves 102 arranged in a circular array, and a first shearing flow channel 9 is formed between the side wall surfaces of two adjacent first annular convex ribs 302 and the side wall surface of the second annular convex rib 101.

In an alternative embodiment, as shown in fig. 4, the first groove 303 is V-shaped and the second groove 102 is U-shaped.

Specifically, the first grooves 303 arranged in a circular array formed on the side wall surface of the first annular convex rib 302 are V-shaped, and two groove wall surfaces of the first grooves 303 form a V-shape for providing a shearing force for shearing impurities; the second grooves 102 arranged in a circular array formed in the side wall surface of the second annular protruding rib 101 are in a U shape, namely, the angle between the groove bottom surface of the second grooves 102 and the groove wall surface is close to 90 degrees, the groove wall surface of the first grooves 303 is fully contacted with impurities in the rotating process of the rotor assembly 3, and the groove wall surface of the second grooves 102 can inhibit the impurities from sliding in the circumferential direction in the shearing process, so that the impurities can be fully sheared and crushed under the combined action of the groove wall surface of the first grooves 303 and the groove wall surface of the second grooves 102.

As shown in fig. 2, 3 and 5, in an alternative embodiment a second shear flow channel 10 is provided between the outlet end of the inlet flow channel 8 and the inlet end of the annular flow channel 11; the outer wall surface of the rotor shell 301 is provided with a plurality of first corrugated grooves 304 arranged in a circular array, the groove bottom surface of each first annular groove is provided with a plurality of second corrugated grooves 103 arranged in a circular array, the first corrugated grooves 304 and the second corrugated grooves 103 are arranged in a one-to-one correspondence manner, and the plurality of first corrugated grooves 304 and the plurality of second corrugated grooves 103 enable a second shearing flow channel 10 to be formed between the outer wall surface of the rotor shell 301 and the groove bottom surface of the first annular groove.

Specifically, the second shear flow passage 10 is formed between the outer wall surface of the rotor case 301 near the outlet end of the inlet flow passage 8 and the groove bottom surface of the first annular groove near the outlet end of the inlet flow passage 8. The outer wall surface of the rotor casing 301 is recessed to form a first corrugated groove 304, the extending direction of the first corrugated groove 304 may be consistent with the axial direction of the rotor casing 301, the extending direction of the first corrugated groove 304 may also form a certain angle with the axial direction of the rotor casing 301, the length of the first corrugated groove 304 is set according to actual requirements, and the plurality of first corrugated grooves 304 are arranged on the outer wall surface of the rotor casing 301 in a circular array. The bottom surface of the first annular groove is concavely provided with a second corrugated groove 103, the extending direction of the second corrugated groove 103 can be consistent with the axial direction of the pump housing 1, the extending direction of the second corrugated groove 103 can also form a certain angle with the axial direction of the pump housing 1, the length of the second corrugated groove 103 is matched with that of the first corrugated groove 304, and the plurality of second corrugated grooves 103 are distributed on the bottom surface of the first annular groove in a circular array.

The top surface sandwiched between two adjacent first corrugated troughs 304 is defined as a first trough top surface, the top surface sandwiched between two adjacent second corrugated troughs 103 is defined as a second trough top surface, the first corrugated troughs 304 and the second corrugated troughs 103 are arranged in a one-to-one correspondence manner, and the first trough top surfaces and the second trough top surfaces are arranged in a one-to-one correspondence manner. A third distance is defined as a distance between the bottom of the first corrugated groove 304 and the bottom of the second corrugated groove 103, a fourth distance is defined as a distance between the top of the first groove and the top of the second groove, the first corrugated grooves 304 and the second corrugated grooves 103 form a third gap region arranged in a circular array, and the first groove tops and the second groove tops form a fourth gap region arranged in a circular array, so that an "expanded-reduced" flow channel region which periodically changes in the circumferential direction is formed between the outer wall surface of the rotor housing 301 and the bottom of the first annular groove. In the process that the impurities flow in the third gap region and the fourth gap region which are arranged at intervals in the rotation process of the rotor assembly 3, the small-sized impurities flowing through the first shearing flow channel 9 can be further sheared, extruded and crushed into the small-sized impurities under the interaction of the wall surface of the first corrugated groove 304 and the wall surface of the second corrugated groove 103. The fine impurities can effectively avoid scratching the rotor shell 301 and the stator shell 201 in the process of flowing through the annular flow channel 11 along with the cooling fluid, and meanwhile, the miniaturization design of an air gap channel between the outer wall surface of the rotor shell 301 and the inner wall surface of the stator shell 201 is facilitated.

Further, it is possible to provide a column-shaped body 13 of a certain length between the end face of the rotor case 301 and the side groove wall face of the first annular groove, provide the first corrugated groove 304 on the outer wall face of the column-shaped body 13, and provide the second corrugated groove 103 on the groove bottom face of the first annular groove corresponding to the column-shaped body 13. In the process of shearing, extruding and crushing the impurities in the second shearing flow channel 10, the impurities can be prevented from scratching the rotor shell 301.

In the embodiment of the present invention, the outer wall surface of the rotor housing 301 near the outlet end of the inlet flow channel 8 is provided with the plurality of first corrugated grooves 304 arranged in a circular array, the bottom surface of the first annular groove is provided with the plurality of second corrugated grooves 103 arranged in a circular array, the plurality of first corrugated grooves 304 and the plurality of second corrugated grooves 103 enable the second shearing flow channel 10 to be formed between the outer wall surface of the rotor housing 301 and the bottom surface of the first annular groove, during the flowing process of the cooling fluid, the first shearing flow channel 9 shears and crushes large-size impurities in the cooling fluid into small-size impurities, and the small-size impurities are further sheared and crushed into fine-size impurities after flowing through the second shearing flow channel 10, so that the rotor housing 301 and the stator housing 201 can be effectively prevented from being scratched in the process of flowing through the annular flow channel 11, which is beneficial to further improving the operation reliability of the integrated pipe pump, and is also beneficial to the miniaturization design of the air gap channel of the motor assembly, and is beneficial to improving the working efficiency of the integrated pipe pump.

In an alternative embodiment, the first corrugation groove 304 is obliquely formed on the outer wall surface of the rotor housing 301, and the second corrugation groove 103 is obliquely formed on the groove bottom surface of the first annular groove.

Specifically, the extending direction of the first corrugated groove 304 on the outer wall surface of the rotor casing 301 is at a certain angle with the axial direction of the rotor casing 301, that is, the first corrugated groove 304 is obliquely arranged on the outer wall surface of the rotor casing 301, and the rotor casing 301 is coaxial with the pump housing 1; the extending direction of the second corrugation groove 103 on the groove bottom surface of the first annular groove is also at a certain angle with the axial direction of the pump housing 1, that is, the second corrugation groove 103 is obliquely arranged on the groove bottom surface of the first annular groove. Therefore, in the rotating process of the rotor assembly 3, at any time, the first groove top surface and the second groove top surface are positioned right opposite to each other between the outer wall surface of the rotor shell 301 and the groove bottom surface of the first annular groove, so that large-particle-size impurities can be effectively prevented from directly passing through the position with a large flow channel interface formed by the groove bottom of the first corrugated groove 304 and the groove bottom of the second corrugated groove 103, and the operation reliability of the integrated pipeline pump is further improved.

As shown in fig. 3, in an alternative embodiment, a first flute top surface is formed between two adjacent first corrugation flutes 304, a second flute top surface is formed between two adjacent second corrugation flutes 103, and the distance between the first flute top surface and the second flute top surface gradually decreases from the inlet end of the second shear flow channel 10 to the outlet end of the second shear flow channel 10.

Specifically, a top surface sandwiched between two adjacent first corrugated troughs 304 is defined as a first trough top surface, a top surface sandwiched between two adjacent second corrugated troughs 103 is defined as a second trough top surface, and a distance between the first trough top surface and the second trough top surface gradually decreases from an inlet end of the second shearing flow channel 10 to an outlet end of the second shearing flow channel 10 along an axial direction of the second shearing flow channel 10. In the process that the impurities flow from the inlet end of the second shearing flow channel 10 to the outlet end of the second shearing flow channel 10 along with the cooling fluid, the shearing and extrusion crushing degrees of the wall surfaces of the first corrugated grooves 304 and the groove walls of the second corrugated grooves 103 facing the impurities are gradually enhanced, so that the impurities are gradually thinned, the thinning degree of the impurities is further enhanced, and the rotor shell 301 and the stator shell 201 are prevented from being scratched.

In an alternative embodiment, the spacing between the first and second slot top faces at the inlet end of the second shear flow channel 10 is greater than the spacing between the outer wall face of the rotor housing 301 and the slot bottom face of the first annular groove at the outlet end of the inlet flow channel 8.

Specifically, the interval between the first groove top surface of entrance end department and the second groove top surface of second shear flow channel 10 is greater than the interval between the outer wall of entrance flow channel 8's exit end department rotor housing 301 and the tank bottom surface of first annular groove, make the impurity that flows out from entrance flow channel 8 exit end department can get into second shear flow channel 10 smoothly along with the further in-process that flows of cooling fluid, effectively avoid impurity card between rotor housing 301's outer wall and the tank bottom surface of first annular groove, and then influence the rotation of rotor subassembly 3, guarantee the reliability of rotor subassembly 3 operation.

In an alternative embodiment, the distance between the first slot top surface and the second slot top surface at the outlet end of the second shear flow channel 10 is smaller than the distance between the outer wall surface of the rotor housing 301 and the inner wall surface of the stator housing 201 at the annular flow channel 11.

Specifically, at the outlet end of the second shear flow channel 10, the distance between the first slot top surface and the second slot top surface is smaller than the distance between the outer wall surface of the rotor housing 301 and the inner wall surface of the stator housing 201. The impurities flow from the inlet end of the second shearing flow channel 10 to the outlet end of the second shearing flow channel 10 and are sheared, extruded and crushed into fine impurities, the size of the fine impurities is smaller than the size of the gap of the annular flow channel 11, and the size of the gap of the annular flow channel 11 is the size of the gap between the outer wall surface of the rotor shell 301 and the inner wall surface of the stator shell 201. Therefore, the fine impurities can further smoothly flow along the annular flow channel 11 along with the cooling fluid and finally flow out from the outlet flow channel 12, thereby being beneficial to further ensuring the reliability of the operation of the rotor assembly 3.

In an alternative embodiment, as shown in fig. 2, a plurality of coaxially arranged third annular ribs 305 are convexly formed on the end surface of the rotor casing 301 at the outlet flow passage 12, a plurality of coaxially arranged fourth annular ribs are convexly formed on the side groove wall surface of the first annular groove, and the third annular ribs 305 are located in the area surrounded by two adjacent fourth annular ribs.

Specifically, the end face of the rotor casing 301 at the outlet channel 12 is provided with a plurality of third annular ribs 305 which are coaxial with the axis of the pump casing 1 in a protruding manner, the number of the third annular ribs 305 is set according to actual requirements, the side groove wall surface of the first annular groove at the outlet channel 12 is provided with a plurality of fourth annular ribs which are coaxial with the axis of the pump casing 1 in a protruding manner, and the number of the fourth annular ribs is set according to actual requirements. Enclose into the accommodation space who holds third annular fin 305 between two adjacent fourth annular fins, it can be understood that third annular fin 305 is clearance fit with fourth annular fin to satisfy rotor assembly 3's rotation demand.

Therefore, the third annular convex ribs 305 and the fourth annular convex ribs form a labyrinth flow channel, the structure is simple, impurities in fluid can be effectively prevented from entering the cooling flow channel 7 through the outlet flow channel 12, and the operation reliability of the integrated pipeline pump is guaranteed.

In an alternative embodiment, as shown in fig. 6, the outer wall surface of at least one third annular rib 305 is provided with a plurality of inclined grooves 306 arranged in a circular array, and the plurality of inclined grooves 306 form a despin flow channel.

Specifically, an inclined groove 306 is concavely formed on the outer wall surface of the third annular rib 305, a plurality of inclined grooves 306 are arranged on the outer wall surface of the third annular rib 305 in a circular array, and the extending direction of the inclined grooves 306 is opposite to the rotating direction of the rotor assembly 3.

When the cooling fluid flows in the cooling flow channel 7, due to the high-speed rotation of the rotor assembly 3, the cooling fluid can generate a velocity vector along the circumferential direction under the action of the coriolis force and the shearing force, so that when the cooling fluid is discharged through the cooling flow channel 7, turbulent flow along the circumferential direction is introduced into the flow field at the front edge area of the pump impeller 4, and therefore the flow field at the front edge area of the pump impeller 4 can be damaged, and the working performance of the integrated pipeline pump is affected.

The outer wall surface of the third annular rib 305 is provided with a plurality of inclined grooves 306 arranged in a circular array, the extending direction of the inclined grooves 306 is opposite to the rotating direction of the rotor assembly 3, and the peripheral speed component caused by the rotating motion of the rotor assembly 3 is offset by utilizing the reverse speed component generated by the extrusion and shearing action of the rotor assembly 3 on the narrow gap flow field when the rotor assembly 3 rotates, so that the speed of the cooling fluid at the outlet end of the outlet flow channel 12 is corrected, and the pumping performance of the integrated pipeline pump is improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An integrated in-line pump, comprising: a pump housing, a pump impeller, a rotor assembly and a stator assembly;

a supporting shaft which is coaxial with the pump shell is arranged in the pump shell, and the pump impeller is rotationally connected with the supporting shaft; the rotor assembly is connected with the rim of the pump impeller, the rotor assembly comprises a rotor shell, and the stator assembly comprises a stator shell;

the inner wall surface of the pump shell is provided with a first annular groove and a second annular groove which are communicated with each other, the rotor assembly is positioned in the first annular groove, and the stator assembly is positioned in the second annular groove and is arranged opposite to the rotor assembly; an inlet channel, an annular channel and an outlet channel which are communicated with each other are formed among the rotor shell, the stator shell and the pump shell;

the inlet runner is characterized in that a plurality of first annular convex ribs which are coaxially arranged are convexly arranged on the end face of the rotor shell at the inlet runner, a plurality of second annular convex ribs which are coaxially arranged are convexly arranged on the side groove wall surface of the first annular groove, the first annular convex ribs are positioned in an area defined by two adjacent second annular convex ribs, and a first shearing runner is formed between the side wall surface of at least one first annular convex rib and the side wall surface of the adjacent second annular convex rib.

2. The integrated piping pump according to claim 1, wherein a side wall surface of said first annular rib is provided with a plurality of first grooves arranged in a circular array, a side wall surface of said second annular rib is provided with a plurality of second grooves arranged in a circular array, said first grooves and said second grooves are arranged in one-to-one correspondence, and said plurality of first grooves and said plurality of second grooves cause said first shear flow path to be formed between a side wall surface of said first annular rib and a side wall surface of an adjacent said second annular rib.

3. The integrated tubing pump of claim 2, wherein the first groove is V-shaped and the second groove is U-shaped.

4. The integrated in-line pump of claim 1, wherein a second shear flow channel is provided between the outlet end of the inlet flow channel and the inlet end of the annular flow channel;

the outer wall surface of the rotor shell is provided with a plurality of first corrugated grooves distributed in a circular array, the groove bottom surface of each first annular groove is provided with a plurality of second corrugated grooves distributed in a circular array, the first corrugated grooves and the second corrugated grooves are distributed in a one-to-one correspondence mode, and the plurality of first corrugated grooves and the plurality of second corrugated grooves enable the outer wall surface of the rotor shell and the groove bottom surface of the first annular groove to form the second shearing flow channel.

5. The integrated piping pump according to claim 4, wherein said first bellows groove is provided in an inclined manner in an outer wall surface of said rotor case, and said second bellows groove is provided in an inclined manner in a groove bottom surface of said first annular groove.

6. The integrated piping pump according to claim 4, wherein a first flute top face is formed between adjacent two of said first corrugation flutes, and a second flute top face is formed between adjacent two of said second corrugation flutes, and a distance between said first flute top face and said second flute top face gradually decreases from an inlet end of said second shear flow channel to an outlet end of said second shear flow channel.

7. The integrated piping pump of claim 6, wherein a spacing between the first and second groove top faces at the inlet end of the second shear flow passage is larger than a spacing between the outer wall face of the rotor case and the groove bottom face of the first annular groove at the outlet end of the inlet flow passage.

8. The integrated piping pump of claim 7, wherein a spacing between the first groove ceiling face and the second groove ceiling face at the outlet end of the second shear flow passage is smaller than a spacing between an outer wall face of the rotor housing and an inner wall face of the stator housing at the annular flow passage.

9. The integrated piping pump according to claim 1, wherein a plurality of coaxially arranged third annular ribs are formed to protrude from an end surface of said rotor case at said outlet flow passage, a plurality of coaxially arranged fourth annular ribs are formed to protrude from a side groove wall surface of said first annular groove, and said third annular ribs are located in a region surrounded by adjacent two of said fourth annular ribs.

10. The integrated piping pump according to claim 9, wherein an outer wall surface of at least one of said third annular ribs is provided with a plurality of inclined-shaped grooves arranged in a circular array, said plurality of inclined-shaped grooves forming a despun flow passage.

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