Stator laminate, stator assembly including the stator laminate, and method of making the stator assembly
A stator assembly for a progressing cavity pump is provided. The stator assembly includes a number of stator laminates having a planar body defining a primary, inner passage and a number of outer passages, the outer passages disposed effectively adjacent the inner passage whereby the inner passage is at least partially defined by a band, wherein the band is outwardly flexible. The stator laminates are coupled to each other in a stack wherein the stator laminate body inner passages define a helical passage. The helical passage is a flexible helical passage.
1. A stator laminate for a progressing cavity pump stator assembly comprising:
a planar body defining a primary, inner passage and a number of outer passages;
said outer passages disposed effectively adjacent said inner passage whereby said inner passage is at least partially defined by a band;
wherein said band and outer passages comprise a flexibility assembly: wherein said number of outer passages include circumferentially adjacent passages;
said number of outer passages includes a number of slots;
each of said slot including a first end, a medial portion, and a second end;
and said slots defining a number of support elements between said adjacent slots.
2. The stator laminate of claim 1 wherein said number of outer passages are disposed about said inner passage.
3. The stator laminate of claim 2 wherein:
said number of outer passages includes a first set of outer passages and a second set of outer passages;
said first set of outer passages are disposed about said inner passage;
said first set of outer passages defining a number of first support elements between adjacent passages;
said second set of outer passages are disposed about said first set of outer passages;
said second set of outer passages defining a number of second support elements between adjacent passages.
4. A stator assembly for a progressing cavity pump, said progressing cavity pump including an elongated helical rotor, said stator assembly comprising:
a number of stator laminate bodies, each of said stator laminate body is planar defining a primary, inner passage and a number of outer passages, said outer passages disposed effectively adjacent said inner passage whereby said inner passage is at least partially defined by a band, wherein said band is flexible;
said stator laminate bodies coupled to each other in a stack wherein said stator laminate body inner passages define a helical passage and said stator laminate body outer passages define helical outer passages;
wherein said helical passage includes a flexibility assembly;
each said stator laminate body number of outer passages includes a first set of outer passages and a second set of outer passages;
said first set of outer passages are disposed about the associated inner passage; and
said second set of outer passages are disposed about the associated first set of outer passages.