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CN-224228845-U - Plunger and fluid end

CN224228845UCN 224228845 UCN224228845 UCN 224228845UCN-224228845-U

Abstract

The application discloses a plunger and a hydraulic end, and relates to the fields of oil gas, mines and the like. The plunger is applied to a hydraulic end, and comprises a first end part and a second end part which are arranged at two ends along the axial direction of the plunger, wherein the first end part is used for bearing a driving action, the second end part is used for being arranged in a valve box of the hydraulic end, and a concave groove is formed in the end face of the second end part and used for accommodating a part of structure positioned in the hydraulic end. The application can solve the problems of larger increase of the width of the hydraulic end, manufacturing cost, transportation cost and the like.

Inventors

  • LI XIAOBIN
  • GUAN BAOGUO
  • 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 (10)

  1. 1. A plunger, applied to a fluid end, characterized in that the plunger (10) comprises a first end (11) and a second end (12) arranged at both ends in the axial direction of the plunger (10); The first end (11) is intended to be subjected to a driving action; The second end (12) is used for being arranged in a valve box (20) of the hydraulic end, a concave groove (121) is formed in the end face of the second end (12), and the concave groove (121) is used for accommodating a part of structures located on the hydraulic end.
  2. 2. The plunger of claim 1, wherein the cross-sectional area of the recessed groove (121) at the notch (1211) is greater than the cross-sectional area of the recessed groove (121) at the groove bottom (1212).
  3. 3. The plunger according to claim 1, characterized in that the cross-street area of the recess (121) is constant along the axial direction of the plunger (10).
  4. 4. The plunger of claim 1, wherein a cross-sectional area of the recessed groove (121) at the notch (1211) is smaller than a cross-sectional area of the recessed groove (121) at the groove bottom (1212).
  5. 5. The plunger according to any one of claims 1 to 4, characterized in that the bottom (1212) of the recess (121) is provided with a dismounting hole (122), the dismounting hole (122) extending in the axial direction of the plunger (10).
  6. 6. The plunger of claim 5, wherein the removal hole (122) is a threaded hole or a stepped hole.
  7. 7. The plunger according to claim 5, characterized in that the dismounting hole (122) is provided with a transition hole (123) at one end near the bottom (1212) of the recess groove (121); The cross-sectional area of the transition hole (123) at one end near the groove bottom (1212) is larger than the cross-sectional area of the transition hole (123) at one end near the dismounting hole (122).
  8. 8. The plunger according to any one of claims 1 to 4, wherein the outer peripheral wall of the first end portion (11) is provided with an annular groove (111) and an annular projection (112) extending circumferentially of the plunger (10); the annular projection (112) is located on the side of the annular groove (111) which is adjacent to the end face of the first end (11).
  9. 9. A fluid end characterized by comprising a valve housing (20), a suction valve guide (30) and a plunger (10) according to any one of claims 1 to 8; The valve box (20) is provided with a valve cavity (21) and a plunger channel (22) which are communicated, the suction valve guide seat (30) is arranged in the valve cavity (21) and is close to the plunger channel (22), and the plunger (10) is movably arranged in the plunger channel (22) and can move into the valve cavity (21); at least part of the suction valve guide (30) is located in the recess (121) in a state in which the plunger (10) is moved to a front dead center position.
  10. 10. The fluid end according to claim 9, further comprising a suction valve assembly (40), said suction valve assembly (40) being movably arranged in said valve chamber (21); At least part of the suction valve assembly (40) is accommodated in the suction valve guide seat (30) in a state that the plunger (10) moves to a front dead center position, and at least part of the suction valve assembly (40) is positioned in the concave groove (121).

Description

Plunger and fluid end Technical Field The application belongs to the technical field of oil gas, mines and the like, and particularly relates to a plunger and a hydraulic end. Background In the related art, the plunger pump can include components such as valve box, valve subassembly, disk seat, plunger, and wherein, the valve box has cavity and plunger hole that are linked together, and valve subassembly and disk seat are all located in the cavity, and the plunger slides and locates the plunger hole. With the reciprocating movement of the plunger, the liquid can be made to enter the valve box and be discharged from the valve box, so that the pressurizing treatment of the liquid is realized. However, since the valve assembly and the valve seat are both located in the cavity, in order to avoid the plunger from being affected by the reciprocating movement of the valve assembly and the valve seat, the width dimension of the hydraulic end of the plunger pump in the reciprocating movement direction of the plunger needs to be increased, so that the hydraulic end of the plunger pump is huge, and the manufacturing cost and the transportation cost are increased. Disclosure of utility model The embodiment of the application aims to provide a plunger and a hydraulic end, which can solve the problems that the width of the hydraulic end is large, the manufacturing cost and the transportation cost are increased, and the like. In order to solve the technical problems, the application is realized as follows: the embodiment of the application provides a plunger, which is applied to a hydraulic end and comprises a first end part and a second end part, wherein the first end part and the second end part are oppositely arranged along the axial direction of the plunger; The first end is used for bearing a driving action; The second end is used for being arranged in the valve box of the hydraulic end, the end face of the second end is provided with a concave groove, and the concave groove is used for accommodating a part of structure positioned on the hydraulic end. The embodiment of the application also provides a hydraulic end, which comprises a valve box, a suction valve guide seat and the plunger; The valve box is provided with a valve cavity and a plunger channel which are communicated, the suction valve guide seat is arranged in the valve cavity and is close to the plunger channel, and the plunger is movably arranged in the plunger channel and can move into the valve cavity; At least a portion of the suction valve guide seat is located in the recessed groove in a state in which the plunger is moved to a front dead center position. According to the embodiment of the application, the structure of the plunger is optimized, so that the end face of the second end part of the plunger is provided with the concave groove, and one end of the concave groove is arranged in the valve box, so that when the plunger moves towards the valve box, part of the structure of the hydraulic end gradually enters the concave groove, namely, through the arrangement of the concave groove, an avoidance space is provided for part of the structure, the collision between the second end part of the plunger and part of the structure is prevented, and the normal reciprocating movement of the plunger is ensured. Compared with the mode that the end face of the second end part is planar, the width size of the valve box can be reduced under the condition that the moving range of the plunger is not changed, the size of the hydraulic end is further reduced, and therefore transportation is facilitated and the transportation cost is reduced. Drawings FIG. 1 is a schematic view of a plunger according to an embodiment of the present application; FIG. 2 is a schematic cross-sectional view of a plunger according to an embodiment of the present disclosure; fig. 3 is a schematic partial cross-sectional view of a fluid end according to an embodiment of the present application. Reference numerals illustrate: 10-a plunger; 11-first end, 111-annular groove, 112-annular projection; 12-second end, 121-concave groove, 1211-notch, 1212-groove bottom, 122-dismounting hole, 123-transition hole; 13-lightening holes; 20-valve box, 21-valve cavity, 22-plunger channel; 30-a suction valve guide seat; 40-inhalation valve 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