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CN-121993374-A - High-power seven-cylinder fracturing pump shell and fracturing pump

CN121993374ACN 121993374 ACN121993374 ACN 121993374ACN-121993374-A

Abstract

The application discloses a high-power seven-cylinder fracturing pump shell and a fracturing pump in the technical field of fracturing pumps, and aims to solve the problems that the prior art is difficult to meet the requirements of high pressure and large discharge capacity on a construction site and the stability of the whole structure of the fracturing pump is poor. The novel hydraulic pump comprises a pump shell body, wherein the pump shell body comprises two side bearing seats, the side walls of the two side bearing seats are provided with an upper arc plate and a lower arc plate, and a rear view hole cover plate and a connecting rod cross head box body are arranged between the upper arc plate and the lower arc plate; the application provides a pump shell structure type of a seven-cylinder fracturing pump, which has higher discharge capacity, higher pressure and lower discharge pulsation than a five-cylinder fracturing pump under the same rotating speed and stroke working conditions, and can meet the requirement of high discharge capacity and high pressure of a well site.

Inventors

  • SUN YU
  • Tan Haotao
  • SU WEI
  • HE WENSI
  • WANG YU

Assignees

  • 徐州徐工基础工程机械有限公司

Dates

Publication Date
20260508
Application Date
20260331

Claims (10)

  1. 1. The high-power seven-cylinder fracturing pump shell is characterized by comprising a pump shell body, wherein the pump shell body comprises two side bearing seats (5), the side walls of the two side bearing seats (5) are provided with an upper arc plate (1) and a lower arc plate (8), a rear view hole cover plate (4) and a connecting rod cross head box body are arranged between the upper arc plate (1) and the lower arc plate (8), the upper arc plate (1), the lower arc plate (8), the rear view hole cover plate (4) and the connecting rod cross head box body are matched to form an annular cavity, and a plurality of middle bearing seats (6) are arranged between the upper arc plate (1) and the lower arc plate (8) in the annular cavity at equal intervals in parallel; The side bearing seat (5) and the adjacent middle bearing seat (6) and the adjacent middle bearing seats (6) are respectively provided with a reinforcing rib group, each reinforcing rib group comprises a plurality of reinforcing rib plates (15), a plurality of reinforcing rib plates (15) positioned on one side of the upper arc plate (1) are respectively fixedly connected with the upper arc plate (1), and a plurality of reinforcing rib plates (15) positioned on one side of the lower arc plate (8) are respectively fixedly connected with the lower arc plate (8).
  2. 2. The high-power seven-cylinder fracturing pump casing according to claim 1, characterized in that the connecting rod cross head box body comprises two sealing plates (2), the two sealing plates (2) are respectively contacted with the upper arc plate (1) and the lower arc plate (8), side plates (9) are symmetrically arranged between the two sealing plates (2), the two side plates (9) are respectively arranged on one side of the two side bearing seats (5), a plurality of middle plates (10) are arranged between the two sealing plates (2) in parallel and equidistantly, and the middle plates (10) are in one-to-one correspondence with the middle bearing seats (6).
  3. 3. The high-power seven-cylinder fracturing pump shell according to claim 2, characterized in that the outer wall of the lower arc plate (8) is uniformly provided with a plurality of first baseboard (18), a supporting leg rib plate (19) is arranged between the first baseboard (18) and the lower arc plate (8), a second baseboard (14) is arranged at the bottom end of the side plate (9), and a front rib plate (13) is arranged between the side plate (9) and the second baseboard (14).
  4. 4. A high power seven cylinder fracturing pump casing according to claim 1, characterized in that the axes of both said side bearing seats (5) and of said intermediate bearing seats (6) are on the same horizontal line; the number of the middle bearing seats (6) is six; The two side bearing seats (5) are detachably connected with an input mechanism.
  5. 5. The high-power seven-cylinder fracturing pump shell according to claim 1, characterized in that the outer wall of the upper arc plate (1) is provided with a lifting lug (16), the outer wall of the lower arc plate (8) is provided with an oil return groove (7), and the outer wall of the oil return groove (7) is provided with a plurality of oil discharge ports.
  6. 6. The high-power seven-cylinder fracturing pump shell according to claim 1, characterized in that the outer wall of the upper arc plate (1) is provided with a plurality of oil hole flanges (3).
  7. 7. The high-power seven-cylinder fracturing pump casing according to claim 2, characterized in that the outer walls of the upper arc plate (1) and the two sealing plates (2) are both provided with lubricating oil pipes (17).
  8. 8. The high-power seven-cylinder fracturing pump shell according to claim 2, characterized in that a plurality of slide plate groups are arranged in parallel and equidistantly between the two sealing plates (2), and the slide plate groups are staggered with the intermediate plates (10); the sliding plate group comprises a plurality of sliding plate seats (12) symmetrically arranged on the inner walls of the two sealing plates (2).
  9. 9. The high-power seven-cylinder fracturing pump shell according to claim 2, characterized in that the side walls of the two sealing plates (2) and the side walls of the two side plates (9) are provided with a same front end plate (11), and the outer wall of the front end plate (11) is provided with a pull rod mounting hole.
  10. 10. A fracturing pump comprising a high power seven-cylinder fracturing pump casing according to any one of claims 1 to 9.

Description

High-power seven-cylinder fracturing pump shell and fracturing pump Technical Field The invention relates to a high-power seven-cylinder fracturing pump shell and a fracturing pump, and belongs to the technical field of fracturing pumps. Background The fracturing operation is a yield increasing technology widely adopted in the field of oil and gas field exploitation, and along with the vigorous development of the Chinese shale gas fracturing market, the requirements for the working conditions of high-pressure large-displacement continuous fracturing operation are continuously increased. The pump shell is a key part for bearing support and power transmission in the fracturing pump, and is subjected to complex load impact at any time. The stability and reliability of the fracturing pump directly determine the service condition of the fracturing pump. However, due to limited discharge capacity, the conventional three-cylinder or five-cylinder fracturing pump is usually provided with more than ten high-power fracturing devices to meet the operation requirements of high pressure and large discharge capacity on a construction site, and shale gas reservoirs in China are located in mountainous areas, so that the fracturing operation devices are large, the occupied area is large, and the site arrangement is difficult. In summary, the fracturing pump in the prior art is difficult to meet the requirements of high pressure and large discharge capacity of a construction site, and the stability of the whole structure of the fracturing pump is poor, so that the actual use effect is affected. Disclosure of Invention The application aims to overcome the defects in the prior art, provides a high-power seven-cylinder fracturing pump shell and a fracturing pump, and compared with the traditional three-cylinder pump and five-cylinder pump shell, an odd-number multi-cylinder design concept is adopted, a seven-cylinder fracturing pump shell structure type is provided, the seven-cylinder fracturing pump shell has higher discharge capacity and higher pressure and lower discharge pulsation compared with the five-cylinder fracturing pump under the same rotating speed and stroke working conditions, and can meet the requirement of high discharge capacity and high pressure of a well site. In order to solve the technical problems, the invention is realized by adopting the following technical scheme: The invention provides a high-power seven-cylinder fracturing pump shell, which comprises a pump shell body, wherein the pump shell body comprises two side bearing seats, the side walls of the two side bearing seats are provided with an upper arc plate and a lower arc plate, a rear view hole cover plate and a connecting rod cross head box body are arranged between the upper arc plate and the lower arc plate, the upper arc plate, the lower arc plate, the rear view hole cover plate and the connecting rod cross head box body are matched to form an annular cavity, and a plurality of middle bearing seats are arranged in the annular cavity in parallel and equidistantly between the upper arc plate and the lower arc plate; The side bearing seat is provided with a plurality of reinforcing rib groups, each reinforcing rib group comprises a plurality of reinforcing rib plates, each reinforcing rib plate is located on one side of the upper arc plate and fixedly connected with the upper arc plate, and each reinforcing rib plate is located on one side of the lower arc plate and fixedly connected with the lower arc plate. Further, the connecting rod cross head box body comprises two sealing plates, the two sealing plates are respectively contacted with the upper arc plate and the lower arc plate, side plates are symmetrically arranged between the two sealing plates, the two side plates are respectively positioned on one side of the two side bearing seats, a plurality of middle plates are arranged between the two sealing plates at equal intervals in parallel, and the middle plates are in one-to-one correspondence with the middle bearing seats. Further, the outer wall of lower arc board evenly is equipped with a plurality of first baseboard, first baseboard with be equipped with the landing leg gusset between the lower arc board, the bottom of curb plate is equipped with the second baseboard, the curb plate with be equipped with preceding gusset between the second baseboard. Further, the axes of the two side bearing seats and the plurality of middle bearing seats are all positioned on the same horizontal line; the number of the middle bearing seats is six; The two side bearing seats are detachably connected with an input mechanism. Further, the outer wall of the upper arc plate is provided with a lifting lug, the outer wall of the lower arc plate is provided with an oil return groove, and the outer wall of the oil return groove is provided with a plurality of oil discharge ports. Further, a plurality of oil hole flanges are arranged on the outer wall of the u