Integral reciprocating pump structure supporting spacer section

1. An apparatus comprising: a reciprocating pump comprising a power end, a fluid end, and a spacer section interposing the power and fluid ends, wherein the power end comprises a structural support frame comprising: first and second outboard structural members that are each a discrete, unitary member, and wherein the first and second outboard structural members form: respective portions of a crankcase frame; respective portions of a crosshead support frame; and respective portions of a support base, wherein the first and second outboard structural members comprise respective first and second pedestal portions extending beneath at least a part of the crankcase frame, an entirety of the crosshead support frame, and at least a part of the spacer section, wherein the first and second pedestal portions comprise a lattice structure extending from directly beneath the crankcase frame to directly beneath the spacer section and are configured to be fixedly coupled to a base structure; and a plurality of inboard structural members that are each a discrete, unitary member, wherein each of the plurality of inboard structural members is interposed between the first and second outboard structural members, and wherein the plurality of inboard structural members forms respective additional portions of the crankcase frame and respective additional portions of the crosshead support frame, but not the support base.

2. The apparatus of claim 1 , wherein the spacer section comprises a spacer frame fastened to the support base.

3. The apparatus of claim 1 , wherein the spacer section is vertically supported by direct contact with the support base.

4. The apparatus of claim 1 , wherein the first and second outboard structural members and the plurality of inboard structural members are collectively connected in parallel.

5. The apparatus of claim 1 , wherein the spacer section comprises a spacer frame comprising a plurality of spacer members, each of the plurality of spacer members disposed between the fluid end and the crosshead support frame.

6. The apparatus of claim 5 , wherein the reciprocating pump further comprises a plurality of tie rods, each of the plurality of tie rods connecting a corresponding spacer member to the crosshead support frame.

7. The apparatus of claim 6 , wherein each tie rod of the plurality of tie rods extends through a bore in the corresponding spacer member.

8. The apparatus of claim 6 , wherein at least two spacer members of the plurality of spacer members are fastened to the support base.

9. The apparatus of claim 5 , wherein at least two spacer members of the plurality of spacer members are fastened to the support base.

10. The apparatus of claim 1 , wherein:

the spacer section comprises a spacer frame comprising a plurality of spacer members, each of the plurality of spacer members disposed between the fluid end and a corresponding inboard structural member of the plurality of inboard structural members.

11. The apparatus of claim 10 , wherein the reciprocating pump further comprises a plurality of tie rods connecting the plurality of spacer members to the plurality of inboard structural members.

12. The apparatus of claim 11 , wherein at least two spacer members of the plurality of spacer members are fastened to the support base.

13. The apparatus of claim 10 , wherein the spacer members comprise outboard spacer members and inboard spacer members interposed between the outboard spacer members and wherein the outboard spacer members are each fastened to the portion of the corresponding first and second outboard structural member that forms the support base.

14. The apparatus of claim 1 , further comprising a plurality of shell members, each of the plurality of shell members interposed between the first and second outboard structural members forming a corresponding portion of a back shell of the crankcase frame.

15. An apparatus comprising: a reciprocating pump comprising a power end, a fluid end, and a spacer section interposing the power and fluid ends, wherein the power end comprises: a crankcase comprising a crankcase frame and a plurality of crankshafts each extending from the crankcase frame; a crosshead comprising a crosshead support frame and a plurality of crossheads, each of the plurality of crossheads pivotably connected with a corresponding crankshaft of the plurality of crankshafts; and a structural support frame comprising first and second outboard structural members that are each a discrete, unitary member, wherein each of the first and second outboard structural members form: respective portions of the crankcase frame; respective portions of the crosshead support frame; and respective portions of a support base, wherein the first and second outboard structural members comprise respective first and second pedestal portions extending horizontally below at least a part of the crankcase frame, an entirety of the crosshead support frame and at least a part of the spacer section, wherein the first and second pedestal portions comprise a lattice structure extending from directly beneath the crankcase frame to directly beneath the spacer section and are configured to be fixedly coupled to a base structure, and wherein the structural support frame further comprises a plurality of inboard structural members that are each a discrete, unitary member, and wherein each of the plurality of inboard structural members is interposed between the first and second outboard structural members, and the plurality of inboard structural members forms respective additional portions of the crankcase frame and respective additional portions of the crosshead support frame, but not the support base.

16. The apparatus of claim 15 , wherein the spacer section comprises a spacer frame fastened to the support base.

17. The apparatus of claim 15 , wherein the spacer section is vertically supported by direct contact with the support base.

18. The apparatus of claim 15 , wherein:

the spacer section comprises a spacer frame comprising a plurality of spacer members each of the plurality of spacer members disposed between the fluid end and a corresponding inboard structural member of the plurality of inboard structural members;

the reciprocating pump further comprises a plurality of tie rods each of the plurality of tie rods connecting a corresponding spacer member to the corresponding one of the plurality of inboard structural members; and

at least two spacer members of the plurality of spacer members are fastened to the portions of the corresponding first and second outboard structural members that form the support base.

19. An apparatus comprising: a reciprocating pump comprising a power end, a fluid end, and a spacer section interposing the power and fluid ends, wherein the power end comprises: a crankcase comprising a crankcase frame and a plurality of crankshafts each protruding from the crankcase frame; a crosshead comprising a crosshead support frame and a plurality of crossheads each pivotably connected with an end of a corresponding one of the crankshafts protruding from the crankcase frame; and a structural support frame comprising: first and second outboard structural members that are each a discrete, unitary member, wherein the first and second outboard structural members form: respective portions of the crankcase frame; respective portions of the crosshead support frame; and respective portions of a support base, wherein the first and second outboard structural members comprise respective first and second pedestal portions extending horizontally below at least a part of the crankcase frame, an entirety of the crosshead support frame and at least a part of the spacer frame, wherein the first and second pedestal portions comprise a lattice structure extending from directly beneath the crankcase frame to directly beneath the spacer section and are configured to be fixedly coupled to a base structure, and wherein the spacer frame is fastened to or vertically supported by the support base; and a plurality of inboard structural members that are each a discrete, unitary member and interposed between the first and second outboard structural members, wherein the plurality of inboard structural members forms respective additional portions of the crankcase frame and respective additional portions of the crosshead support frame, but not the support base.