Modular gland arrangements for a fluid end assembly

    公开(公告)号:US10519950B2

    公开(公告)日:2019-12-31

    申请号:US15685167

    申请日:2017-08-24

    Abstract: A closure element for a fluid end assembly that has two or more recessed grooves formed in its outer surface. The grooves are axially offset. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of axially offset grooves in a single closure element, a kit may be formed from two or more otherwise identical closure elements, each with a single recessed groove at a different axial position. Another closure element has a series of ledge-like surfaces defining spaces within which a seal may be received. One outer surface surrounds one or more of the other surfaces. A seal is placed in one and only one of the spaces. As wear occurs, the seal is relocated to one of the other spaces.

    Bellows System For Fluid End
    142.
    发明申请

    公开(公告)号:US20190032685A1

    公开(公告)日:2019-01-31

    申请号:US16043579

    申请日:2018-07-24

    Abstract: A fluid end with an internal bellows can be used in high pressure environments. The bellows is disposed within a plunger bore, and has an interior isolated from a working chamber of the fluid end. An end of a plunger is received in the interior of the bellows. The bellows contains an incompressible fluid at a constant volume. As the plunger extends into the interior of the bellows, the fluid it contains is displaced. Such fluid displacement causes the bellows to extend. As the plunger is retracted, the fluid replaces the volume formerly displaced by the plunger, and causes the bellows to accordion to a retracted position.

    High Pressure Swivel Joint
    144.
    发明申请

    公开(公告)号:US20170299096A1

    公开(公告)日:2017-10-19

    申请号:US15488713

    申请日:2017-04-17

    CPC classification number: F16L27/0828 E21B17/05 F16L55/07

    Abstract: A high pressure swivel joint used in pipe assemblies transferring high pressure fluid. The swivel joint comprises a first pipe section and a sleeve-like second pipe section. The first pipe section is inserted into the second pipe section and the sections are relatively rotatable. A radial seal is seated in a groove formed in either the outer circumference of the first pipe section, or the inner circumference of the second pipe section. The groove is axially spaced from the location where the two pipe sections abut. Alternatively, a groove may be formed in both the outer circumference of the first pipe section and the inner circumference of the second pipe sections, the grooves both being axially spaced from the location where the two pipe sections abut. A radial seal may be inserted in both grooves and a wear ring positioned between the seals.

    FLUID END WITH CLAMPED RETENTION
    148.
    发明申请

    公开(公告)号:US20240401588A1

    公开(公告)日:2024-12-05

    申请号:US18734303

    申请日:2024-06-05

    Abstract: A fluid end section having a clamping system. The clamping system has a primary clamp formed of a number of sections, which, disposed in end-to-end arrangement, form an annular ring. The primary clamp has an angled surface at each of two rims, which interact with complementary surfaces on flanges that form two separate components of the fluid end section. Each of the two separate components have a bore, which when aligned by placement of the clamp, are in alignment with one another. The clamp has an externally-disposed compression ring, which may either be essentially the width of the primary clamp, or may have one or more flexible rods which interact with grooves on the primary clamp. In either case, the compression ring holds the primary clamp in place, therefore joining the components of the fluid end.

    MODULAR GLAND ARRANGEMENTS FOR A FLUID END ASSEMBLY

    公开(公告)号:US20240318553A1

    公开(公告)日:2024-09-26

    申请号:US18679866

    申请日:2024-05-31

    Abstract: A closure element for a fluid end assembly that has two or more recessed grooves formed in its outer surface. The grooves are axially offset. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of axially offset grooves in a single closure element, a kit may be formed from two or more otherwise identical closure elements, each with a single recessed groove at a different axial position. Another closure element has a series of ledge-like surfaces defining spaces within which a seal may be received. One outer surface surrounds one or more of the other surfaces. A seal is placed in one and only one of the spaces. As wear occurs, the seal is relocated to one of the other spaces.

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