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CN-224228842-U - Fluid end assembly and pump

CN224228842UCN 224228842 UCN224228842 UCN 224228842UCN-224228842-U

Abstract

The application discloses a hydraulic end assembly and a pump, and relates to the fields of oil gas, mines and the like. A hydraulic end assembly comprises a plurality of hydraulic end modules arranged side by side along a first direction, wherein each hydraulic end module comprises a hydraulic end shell, a plunger, a valve seat and a valve assembly, the hydraulic end shell comprises a valve box and a packing box, the packing box is detachably arranged on the valve box, the valve box is provided with a main channel, the packing box is provided with a plunger channel communicated with the main channel, the plunger is movably arranged in the plunger channel and can move in or out of the main channel, and the main channel is used for accommodating the valve seat and the valve assembly. The application can solve the problems of difficult maintenance and high replacement cost of the valve box.

Inventors

  • GUAN BAOGUO
  • LI XIAOBIN
  • WEI XIAOSONG
  • SUN YANJING

Assignees

  • 烟台杰瑞石油装备技术有限公司

Dates

Publication Date
20260512
Application Date
20250516

Claims (11)

  1. 1. A fluid end assembly comprising a plurality of fluid end modules (10) arranged side by side in a first direction; Each hydraulic end module (10) comprises a hydraulic end shell (11), a plunger (12), a valve seat (13) and a valve assembly; The hydraulic end shell (11) comprises a valve box (111) and a packing box (112), wherein the packing box (112) is detachably arranged on the valve box (111), the valve box (111) is provided with a main channel (1111), and the packing box (112) is provided with a plunger channel (11211) communicated with the main channel (1111); The plunger (12) is movably arranged in the plunger channel (11211) and can move in or out of the main channel (1111); the main channel (1111) is configured to accommodate the valve seat (13) and the valve assembly.
  2. 2. A fluid end assembly according to claim 1, wherein a threaded bore (1112) is provided in one side of the valve housing (111), the threaded bore (1112) being coaxially arranged with the main channel (1111); one end of the packing box (112) is connected with the threaded hole (1112) in a threaded mode.
  3. 3. The fluid end assembly according to claim 1, wherein the fluid end module (10) further includes a plurality of fasteners (14), the plurality of fasteners (14) being distributed on an outer periphery of the plunger channel (11211) in a circumferential direction of the packing box (112) and fastening the packing box (112) to one side of the valve housing (111).
  4. 4. A fluid end assembly according to claim 2 or 3, wherein the fluid end module (10) further comprises a sealing sleeve (15); A first annular sealing surface (1113) is arranged at one end of the main channel (1111) close to the packing box (112), one end of the sealing sleeve (15) is connected between the plunger (12) and the first annular sealing surface (1113) in a sealing way, and/or, And one end of the plunger channel (11211) close to the valve box (111) is provided with a second annular sealing surface (11212), and the other end of the sealing sleeve (15) is connected between the plunger (12) and the second annular sealing surface (11212) in a sealing way.
  5. 5. The fluid end assembly according to claim 4, wherein a sink (1114) is provided on one side of the valve housing (111), the first annular sealing surface (1113) and the main channel (1111) are provided at a bottom of the sink (1114), respectively, and/or a sink (1114) is provided on one side of the packing box (112), and the second annular sealing surface (11212) and the plunger channel (11211) are provided at a bottom of the sink (1114), respectively; The outer wall of seal cover (15) is equipped with annular protruding (151), annular protruding (151) inlay and locate sink (1114).
  6. 6. A fluid end assembly according to any one of claims 1 to 3, wherein each valve box (111) is provided with a plurality of said main channels (1111) arranged side by side in said first direction; The fluid end housing (11) comprises a plurality of packing boxes (112), the packing boxes (112) are respectively detachably arranged on the valve box (111), and the plunger passages (11211) of the packing boxes (112) are communicated with the main passages (1111) in a one-to-one correspondence mode.
  7. 7. The fluid end assembly of claim 1, wherein the fluid end module (10) further comprises a first seal ring (161) and a second seal ring (162); The first sealing ring (161) and the second sealing ring (162) are respectively connected between the valve seat (13) and the inner wall of the main channel (1111) in a sealing manner, and are respectively positioned at two sides of the liquid inlet channel of the valve box (111) along the axial direction of the hydraulic end module (10).
  8. 8. The fluid end assembly according to claim 1, wherein the fluid end module (10) further comprises a discharge gland (171) and a discharge gland cap (172), the discharge gland cap (171) being plugged at an end of the main channel (1111) facing away from the packing box (112), the discharge gland cap (172) being detachably provided to the main channel (1111) and compressing the discharge gland cap (171); The hydraulic end module (10) comprises a second sealing ring (162) and a third sealing ring (163), wherein the second sealing ring (162) is in sealing connection between the valve seat (13) and the inner wall of the main channel (1111), the third sealing ring (163) is in sealing connection between the discharge gland (171) and the inner wall of the main channel (1111), and the second sealing ring (162) and the third sealing ring (163) are respectively positioned at two sides of the liquid outlet channel of the valve box (111).
  9. 9. The fluid end assembly of claim 1, wherein the packing box (112) comprises a packing box body (1121), a packing component (1122), and a packing press cap (1123); The packing box body (1121) is provided with the plunger channel (11211), the packing assembly (1122) is connected between the inner wall of the plunger channel (11211) and the outer wall of the plunger (12) in a sealing manner, and the packing box body (1121) is of an integral structure or a split structure; The packing pressing cap (1123) is sleeved on the outer side of the plunger (12) and is in threaded connection with the packing box body (1121), and the end part of the packing pressing cap (1123) presses the packing assembly (1122).
  10. 10. The fluid end assembly according to claim 9, wherein a side wall of the packing box body (1121) is provided with a lubrication oil hole (11213); The lubrication oil hole (11213) extends from the outer periphery of the packing box body (1121) to the plunger channel (11211), and is communicated with the plunger channel (11211), and the lubrication oil hole (11213) is provided corresponding to the packing assembly (1122).
  11. 11. A pump comprising a fluid end assembly as claimed in any one of claims 1 to 10.

Description

Fluid end assembly and pump Technical Field The application belongs to the technical field of fracturing equipment, and particularly relates to a hydraulic end assembly and a pump. Background Some hydraulic ends in the related art adopt an integral valve box, the valve box is provided with a plurality of valve cavities which are arranged side by side, the side surface of the valve box is provided with a plurality of packing boxes, and the packing boxes are arranged in one-to-one correspondence with the valve cavities. With the long-time operation of the hydraulic end, the valve cavity is damaged, so that the whole valve box needs to be maintained or replaced, and the problems of difficult maintenance, high replacement cost and the like are solved. Disclosure of utility model The embodiment of the application aims to provide a hydraulic end assembly and a pump, which can solve the problems of difficult maintenance of the whole valve box, high whole replacement cost and the like. In order to solve the technical problems, the application is realized as follows: the embodiment of the application provides a hydraulic end assembly, which comprises a plurality of hydraulic end modules arranged side by side along a first direction; each hydraulic end module comprises a hydraulic end shell, a plunger, a valve seat and a valve assembly; The hydraulic end shell comprises a valve box and a packing box, wherein the packing box is detachably arranged on the valve box, the valve box is provided with a main channel, and the packing box is provided with a plunger channel communicated with the main channel; The plunger is movably arranged in the plunger channel and can move in or out of the main channel; The main passage is for receiving the valve seat and the valve assembly. The embodiment of the application also provides a pump which comprises the hydraulic end assembly. The fluid end assembly comprises a plurality of fluid end modules, the fluid end shell of each fluid end module can comprise a valve box and a packing box, and the packing box is detachably connected with the valve box, so that after the fluid end assembly runs for a long time, even if the fluid end shells of the individual fluid end modules are eroded and worn, the packing box is worn and the like, the valve boxes and the packing boxes in the corresponding fluid end shells can be maintained or replaced independently, and therefore the fluid end shells, even the whole fluid end assembly, are not required to be maintained or replaced integrally, and the maintenance or replacement difficulty and the maintenance or replacement cost can be reduced. Drawings Fig. 1 is a schematic diagram of a first structure of a fluid end module according to an embodiment of the present application; fig. 2 is a second schematic structural view of a fluid end module according to an embodiment of the present application; FIG. 3 is a schematic cross-sectional view of a fluid end module (in a drain state) according to an embodiment of the present application; fig. 4 is a schematic cross-sectional view of a fluid end module (in a fluid-imbibed state) according to an embodiment of the present application; fig. 5 is a schematic structural view of a fluid end housing according to an embodiment of the present application; fig. 6 is a schematic cross-sectional view of a fluid end housing of a first form of the disclosure in accordance with an embodiment of the application; Fig. 7 is a schematic cross-sectional view of a fluid end housing of a second form of the present disclosure; Fig. 8 is a schematic structural diagram of a plunger pump according to an embodiment of the present application. Reference numerals illustrate: 10-a fluid end module; 11-a hydraulic end shell, 111-a valve box, 1111-a main channel, 1112-a threaded hole, 1113-a first annular sealing surface, 1114-a countersink, 112-a packing box, 1121-a packing box body, 11211-a plunger channel, 11212-a second annular sealing surface, 11213-a lubricating oil hole, 1122-a packing assembly and 1123-a packing press cap; 12-a plunger; 13-valve seat; 14-a fastener; 15-sealing sleeve, 151-annular bulge; 161-first sealing ring, 162-second sealing ring, 163-third sealing ring; 171-discharge gland, 172-discharge cap; 20-connecting plates; 30-power end assembly. Detailed Description The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological o