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CN-224228841-U - Valve seat, fluid end and pump

CN224228841UCN 224228841 UCN224228841 UCN 224228841UCN-224228841-U

Abstract

The application discloses a valve seat, a hydraulic end and a pump, which belong to the technical fields of oil gas and mining, wherein the valve seat is applied to the hydraulic end, the hydraulic end comprises a valve box, the valve seat is arranged in the valve box, the valve seat is provided with a first annular groove, a second annular groove and a first liquid inlet channel, the first annular groove and the second annular groove are both positioned on the outer peripheral surface of the valve seat, a first port of the first liquid inlet channel extends to the side surface of the valve seat, the first port is positioned between the first annular groove and the second annular groove, the first annular groove is used for installing a first sealing element, the second annular groove is used for installing a second sealing element, and the first sealing element and the second sealing element are in sealing fit with the valve seat and the valve box. The valve seat can solve the problem that the sealing relationship between the valve seat and the valve box is easy to fail.

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. Valve seat (200), be applied to fluid end, fluid end includes valve box (100), valve seat (200) install in valve box (100), its characterized in that, valve seat (200) are equipped with first annular groove (216), second annular groove (217) and first feed liquor passageway (220), first annular groove (216) and second annular groove (217) all are located valve seat (200)'s outer peripheral face, first port (221) of first feed liquor passageway (220) extends to valve seat (200) side (215), first port (221) are located between first annular groove (216) and second annular groove (217), first annular groove (216) are used for installing first sealing member (611), second annular groove (217) are used for installing second sealing member (612), first sealing member (611) and second sealing member (612) all with valve seat (200) and valve box (100) seal.
  2. 2. The valve seat (200) of claim 1, wherein the axes of the first annular groove (216) and the second annular groove (217) are collinear.
  3. 3. A fluid end characterized by comprising a valve housing (100) and a valve seat (200) according to claim 1 or 2, the valve housing (100) being provided with a second inlet channel (171), the valve seat (200) being mounted in the valve housing (100) and the first inlet channel (220) being in communication with the second inlet channel (171).
  4. 4. A fluid end according to claim 3, characterized in that the valve seat (200) has a first seat end face (213), a second seat end face (214) and a mating concave face (252), the first seat end face (213) and the second seat end face (214) being located at opposite ends of the valve seat (200) in an axial direction of the valve seat, and the first seat end face (213) and the second seat end face (214) being connected to each other by the side face (215), the mating concave face (252) being recessed with respect to the second seat end face (214).
  5. 5. The fluid end of claim 4, further comprising a shield plate (620), the shield plate (620) comprising a bridge (621) and a shielding gusset (622), the shielding gusset (622) being connected to the outside of the bridge (621); The valve seat (200) is provided with a containing groove (230) and a first liquid draining channel (240), the containing groove (230) is concavely arranged relative to the matched concave surface (252), the first seat end face (213) is communicated with the containing groove (230) through the first liquid draining channel (240), and the shielding rib plate (622) is clamped between the first liquid draining channels (240) in the circumferential direction of the side face (215).
  6. 6. The fluid end according to claim 5, wherein in a radial direction of the valve seat (200), the second port (241) of the first drain passage (240) is disposed at a distance from the groove side wall (232) of the accommodating groove (230), the shield plate (620) further includes a circumferential connecting portion (623), the circumferential connecting portion (623) is disposed around an outer periphery of the shielding rib plate (622), and an outer edge of the shielding rib plate (622) is fixedly connected with an inner edge of the circumferential connecting portion (623).
  7. 7. The fluid end according to claim 5, characterized in that the hardness of the shield plate (620) is greater than the hardness of the valve seat (200) and/or the wear resistance of the shield plate (620) is greater than the wear resistance of the valve seat (200).
  8. 8. The fluid end according to claim 5, characterized in that the valve seat comprises a seat body (200 a) and a grommet (200 b), the seat body (200 a) is provided with a countersink and the first seat end surface (213), the countersink comprises the accommodation groove (230), the grommet (200 b) is located on a side of the shield plate (620) facing away from the first seat end surface (213), and the grommet (200 b) is provided with the mating concave surface (252) on a side facing away from the shield plate (620), and the grommet (200 b) is interference-fitted with the accommodation groove (230) to position the shield plate (620) and the valve seat (200) in the axial direction.
  9. 9. A fluid end according to claim 4, wherein the valve seat is provided with a first drain channel (240), the first drain channel (240) extending from the first seat end face (213) to the mating recess (252).
  10. 10. A pump comprising a fluid end as claimed in any one of claims 3 to 9.

Description

Valve seat, fluid end and pump Technical Field The application belongs to the technical field of oil gas and mine exploitation, and particularly relates to a valve seat, a hydraulic end and a pump. Background Pumps are commonly used in hydrocarbon production processes and typically include a power end to which power may be transferred to accomplish the pumping and draining operations, and a fluid end. In the present pump, the fluid end includes valve box and disk seat, and the valve box is equipped with the installation cavity, and the disk seat is installed in the installation cavity of valve box, and in the axial of disk seat, the opposite both ends of disk seat all are equipped with the sealing washer for each sealing washer all extrudees between disk seat and valve box along aforementioned axial, in order to provide sealed effect for disk seat and valve box. However, during operation of the fluid end, the valve seat may slightly move relative to the valve housing in the axial direction of the valve seat due to the flow of the liquid, and the valve seat may also rotate relative to the valve housing, so that the sealing ring between the valve seat and the valve housing may fail due to the movement of the valve seat, resulting in failure of the sealing relationship between the valve seat and the valve housing, which may have a great influence on the normal operation of the fluid end. Disclosure of utility model An object of an embodiment of the present application is to provide a valve seat, a fluid end and a pump to solve the problem that the sealing relationship between the valve seat and the valve housing is liable to fail. In a first aspect, an embodiment of the present application discloses a valve seat, applied to a hydraulic end, where the hydraulic end includes a valve housing, the valve seat is installed in the valve housing, and the valve seat is characterized in that the valve seat is provided with a first annular groove, a second annular groove and a first liquid inlet channel, the first annular groove and the second annular groove are both located on an outer peripheral surface of the valve seat, a first port of the first liquid inlet channel extends to a side surface of the valve seat, the first port is located between the first annular groove and the second annular groove, the first annular groove is used for installing a first sealing element, the second annular groove is used for installing a second sealing element, and the first sealing element and the second sealing element are both in sealing fit with the valve seat and the valve housing. In a second aspect, an embodiment of the present application discloses a fluid end, which includes a valve housing and the valve seat, where the valve housing is provided with a second fluid intake channel, the valve seat is installed in the valve housing, and the first fluid intake channel is communicated with the second fluid intake channel. In a third aspect, embodiments of the present application disclose a pump comprising a fluid end as described above. The embodiment of the application discloses a valve seat which can be matched with a valve box to be applied to a hydraulic end of a pump, wherein a first port of a first liquid inlet channel of the valve seat extends and is positioned on a connecting side surface, so that the first liquid inlet channel of the valve seat can be communicated with a corresponding second liquid inlet channel on the valve box. In order to ensure that the first liquid inlet channel and the second liquid inlet channel are communicated with each other, the second liquid inlet channel and the second liquid outlet channel on the valve box can be kept in an isolated state, in the valve seat disclosed by the embodiment of the application, the valve seat is further provided with a first annular groove and a second annular groove, the first annular groove and the second annular groove are all positioned on the outer peripheral surface of the valve seat, a first sealing piece can be installed in the first annular groove, a second sealing piece can be installed in the second annular groove, and the first sealing piece and the second sealing piece are in sealing fit with the valve seat and the valve box, so that the connecting side surface of the valve seat, the first sealing piece, the cavity wall of the installation cavity and the second sealing piece can be enclosed into a space, and meanwhile, the first liquid inlet channel and the second liquid inlet channel are all communicated with the space, and the second liquid outlet channel of the valve box can be ensured to be independent of each other under the sealing effect provided by the first sealing piece and the second sealing piece. Meanwhile, the first annular groove and the second annular groove are both arranged on the outer peripheral surface of the valve seat, so that in the working process of the valve seat, even if the valve seat slightly shakes relative to the valve b