811 results about "Stuffing box" patented technology

A pump drive head for a progressing cavity pump comprises a top mounted stuffing box rotatably disposed around a compliantly mounted standpipe with a self or manually adjusting pressurization system for the stuffing box. To prevent rotary and vertical motion of the polish rod while servicing the stuffing box, a polished rod lock-out clamp is provided with the pump drive head integral with or adjacent to a blow-out-preventer which can be integrated with the pump drive head to save space and cost. A centrifugal backspin braking system located on the input shaft and actuated only in the backspin direction and a gear drive between the input shaft and output shaft are provided.

A watertight inlet device for inserting a cable containing optical fibers into a chamber or a container, e.g. into a splice box. The device includes a metal solepiece for securing the strength members of the optical cable, and which plugs into and fixes to a tubular sealing body equipped with an external O-ring gasket and having its rear portion shaped to form a sealing stuffing box on the outer sheath of the cable. The rear of the nut of the stuffing box receives a clamp for retaining the cable. Once the device has been fitted, the resulting assembly is inserted into the inlet passageway until it abuts against a shoulder in the passageway. Then only the head of the securing solepiece and a groove in the body project inside the container, the groove then receiving a key or fork for retaining the assembly.

A cable gland assembly adapted to receive a cable and to pass through an opening in a sparking enclosure wall, the cable gland assembly including a cable-receiving gland, a stuffing box, a grommet, an insulator and a cable. The stuffing box has an opening there through, and a grommet-receiving portion having the grommet therein. The grommet-receiving portion is adjacent the cable-receiving gland. The stuffing box also includes a gas terminal portion filled with gas and adjacent the grommet-receiving portion, and an insulator portion having the insulator therein and being adjacent the gas terminal portion.

The present invention provides a wellhead hydraulic drive unit to operate various styles of downhole pumps, which is installed as an integral part of a wellhead thereby eliminating the need for a stuffing box. The wellhead hydraulic drive unit comprises a hollow hydraulic cylinder having a piston positioned therein, a hydraulic fluid supply attached to the hydraulic cylinder for raising the piston within the hydraulic cylinder, a hollow ram slideably received within the inner wall of the hydraulic cylinder and connected to the piston for reciprocation in response to the piston; and a production tube inserted through the ram for enabling well fluid to be discharged from the well.

A device for intervention of a subsea oil and/or gas well by means of a tool (8) suspended by a cable (9), fed from or withdrawn to a vessel (1) and driven by a drive mechanism (12) located on the vessel. The device comprises a lubricator (5) having a tool housing for the insertion of the tool into the well, and a stuffing box (40) sealing around the cable after the tool is inserted into the well. According to the invention an injector which drives the cable in the well is located on the lubricator, and is controllable independently of the drive mechanism for the cable located on the vessel. The drive mechanism and the injector may be synchronized in a manner, among others, providing that the cable is hanging in a predetermined arc during the intervention, whereby the vessel may be moved from the well. Moreover, the invention relates to a method and a cable used together with the device.

Subsea lubricator device, comprising a blowout preventer assembly, a tool housing assembly and a stuffing box, intended to be located at a subsea Christmas tree, and methods of circulating fluids in a subsea lubricator. The device comprises a blowout preventer (40) and a lubricator (60). Along the entire length of the device a bypass (46, 66) is located. The bypass communicates fluid with the device via a fluid connection (72) at the upper end of the tool housing and via a valve assembly (51) at the bottom of the blowout preventer. This permits removal of gas or oil being present in the device by circulating the hydrocarbons in the well.

A mechanical seal of an “outside type” for sealing a sealed fluid that may leak from an inside periphery of a sliding face towards an outside periphery is provided. The seal includes a rotating-side sealing element and a stationary-side sealing element disposed so as to be situated externally with respect to a stuffing box. The stationary-side sealing element, which accommodates a spring, is installed on a seal cover that is secured to the housing. The rotating-side sealing element is installed on a collar that is installed directly on the rotating shaft. The rotating side, which comprises the rotating-side sealing element and the collar, is positioned such that rotation takes place in the atmosphere on a machine-exterior side. A balance ratio A2/A1 is 1 or less, A1 being an axial-direction projection area of the sliding face of the stationary-side sealing element and A2 being an axial-direction projection area that is subjected to a seal fluid pressure acting as a motive force in the axial direction relative to the stationary-side sealing element. An annular cooling jacket is disposed between an inside periphery of the housing and an outside periphery of the rotating shaft.

A knife gate valve is provided, comprising: a unitary valve body having a flow channel extending there through, a guide segment and a stuffing box. A knife gate is located in the guide segment, the stuffing box and the flow channel and is slideable between an open and closed position. Lateral seals are provided in the stuffing box and can be replaced while the valve body is connected in its associated fluid system. These seals include an injectable sealing material contained in the stuffing box. A knife gate seat is provided in the valve body for sealing the knife gate and it can be replaced without completely removing the valve body from its associated fluid system.

A submergible lamp for its use or application in photoperiod in processes of smolting, feeding and optimum handling of the reproductive process of salmon species, whose source of illumination are a group of green LED luminaries issuing light with an intensity of 500 to 550 nanometres, by means that allow for a lower consumption than the lamps currently in use and which not only represent economies in terms of costs, but also a favorable environmental impact in terms of a lower consumption of fuel or batteries, which might eventually represent a danger to the environment, becoming waste and by demanding a substantial infrastructure in their installation. The lamp consists of a semi-spherical casing with top side exit for the power cable covered by a threaded stuffing box through which the three-phase cable emerges, with an inner lining on the surface, transverse to said semi-spherical casing has a tunnel, which permits the affixing and installation of the lamp surrounded by a peripheral ring and base walls both of which have equidistant orifices which allow for joining and affixing by means of screw bolts, with the orifices of the central piece with a cylindrical cross section equipped on the inside with a peripheral body or projection that serves as support for the upper edge of the exterior body or glass cupola, with the upper zone of that peripheral body or projection. In turn, the peripheral projection has a central grooving where an “O” ring is placed that prevents water from entering the lamp; also, said lamp has another interior body or LED holder made of plastic, equipped with LEDs, said interior body is placed inside the exterior body of glass.

A system comprising a top mounted rotating stuffing box is provided for use with downhole pump (e.g., Progressing Cavity Pump) applications. The system also includes a split standpipe configuration that allows the stuffing box to be quickly installed or removed as needed. The split standpipe feature combined with the top-mounted aspect of the stuffing box allow for the corresponding drive units to stay intact while the stuffing box is being installed or removed.

The sluice gate valve includes at least one binding reduction mechanism to reduce binding during actuation of the sluice gate. In one embodiment the mechanism includes a the guide elements and the tracks, the guide elements and the tracks being arranged such that a predetermined amount of rotational motion of the gate around the stem is permitted during actuation of the valve to reduce valve binding. In another embodiment the mechanism includes a stuffing box assembly including a stuffing box, a bushing, and a collar, where a convex curved surface of the collar slides on a concave curved surface of the bushing such that a predetermined amount of pivoting of the stem up to a predetermined cone angle is allowed. In a preferred embodiment the sluice gate valve includes both mechanisms.

A new header ring useful in downhole packing sets automatically cleans the cylinder plunger wall during use and forms an improved seal having long duration. The new header ring has a ring shaped body. The body includes a side wall defining an open top, an open bottom, and an inner wall portion with an inner wall surface for contacting a plunger. The inner wall portion includes an outwardly extending annular undercut, which defines an overhang and radius that helps wipe clean the plunger wall and form a better seal. The body also has an outer wall portion with an outer wall surface for contacting a stuffing box wall. The outer wall has a flat upper portion, a flat lower portion, and an outwardly sloped annular middle portion connecting the top and lower portions. The outer wall also has an inwardly extending annular ledge formed in its bottom. The inner wall portion is formed from a high wear resistance elastomer, and the outer wall portion is formed from a nonabrasive elastomer.

A guide to support a shaft such as a pump pull rod (11) which is capable of both rotary and reciprocal motion. The guide prevents any misalignment of rod (11) damaging a seal, e.g. a stuffing box, held in space (24). Guide element (18) has central portion (19) and annular flange (25). Element (18) can move laterally with respect to housing (12) and can also pivot, along with the cap (15) of the housing (12), with respect to the lower portion (14) thereof. The latter is achieved via movements of part-spherical bearing element (28) and similarly shaped faces (26, 37, 38) of housing 9120. Further seals (33, 34) prevents entry of pumped fluid into chamber (13).

The invention discloses an angular adjusting valve, comprising a valve body, a valve seat, a valve core, a valve rod, and a valve cover. The valve body is internally provided with a valve chamber; the side part, the lower part and the upper part are respectively provided with an inlet, an outlet and a guide sleeve mouth; the valve rod is arranged on the upper part of the valve body; a guide sleeve is fixed inside the guide sleeve mouth; the lower end of the valve rod is connected with the valve core which motions in the guide sleeve; the upper end of the valve rod passes through out of a stuffing box on the valve cover; the lower end of the valve rod is a connecting head; the valve core is fixed on the connecting head; the surface of the connecting head is provided with a plurality of garbage troughs intermittently. By adopting the technical proposal, the angular adjusting valve of the invention has a self-cleaning function and can avoid that the garbage grains are blocked and abraded in the guide sleeve.

A throat bushing (10, 54) for use in a seal chamber (8) or stuffing box (56) of rotary fluid equipment. The throat bushing defines a first face (13, 60) and a second face (21, 62), an outer surface (11) dimensioned to be received with a tight fit within a throat or bore of the seal chamber (8) or stuffing box (56), and a bore (25) therethrough dimensioned to receive a rotary shaft (3) with clearance to permit free rotation of the rotary shaft (3) therein. The throat bushing comprises at least one tangential channel (22) therethrough leading tangentially from the first face (13, 60) proximal to the outer surface (11), through to the second face (21, 62), proximal to an inner annular surface (12) of the throat bushing bore (25).

The invention belongs to the technical field of ultraviolet device cleaning and particularly relates to a piece of magnetic drive cleaning device of an ultraviolet sterilizing device, wherein a screwrod is provided and fixed with an inner magnet ring and a driving device is arranged on the outer wall of the ultraviolet sterilizing device and at the end part of the screw rod and used for driving the screw rod to rotate; a middle support cylinder is sheathed outside the screw rod and the inner magnet ring; an outer magnet ring is placed in an outer magnet box and sheathed on the middle supportcylinder so that the outer magnet ring is opposite to the inner magnet ring in position; a big cleaning plate is sheathed and fixed in the middle of the outer magnet box and a quartz sleeve penetratesthrough a stuffing box on the big cleaning plate; and the inner magnet ring is driven by the screw rod to move back and forth and drives the outer magnet ring and the big cleaning plate to do reciprocating sliding movement through magnetic attraction, thus realizing the purpose of cleaning the quartz sleeve. The device realizes real-time online cleaning, solves the traditional problems that the cleaning assembly does not resist corrosion and the driving device is difficult in motive seal, and is simple in structure, convenient for implementation and easy for promotion.

A stuffing box assembly for use in sealing between a fixed housing and a rotatable member extending through the fixed housing comprising a housing forming a sealing assembly chamber, a rotatable member extending through the housing and a sealing assembly received in the chamber, the sealing assembly including an annular seal ring carrier, an annular seal ring carried by the carrier, the seal ring having an annular radially outer portion and an annular radially inwardly extending sealing lip, an annular seal ring spreader operatively engaged with the seal ring, an elastic biasing member operatively engaged with the seal ring spreader and an annular adjustable follower selectively axially immovable with respect to the housing, the spreader exerting a greater force on the sealing lip than the radially outer portion of the seal lip when the spreader is biased towards the seal ring.

The invention relates to a solid medium contained plunger pump stuffing sealing device which comprises a plunger, a main stuffing press cover, a stuffing body, an outlet one-way valve, a flushing fluid pipe, an auxiliary stuffing press cover, an auxiliary stuffing box, an O-shaped ring, an inlet one-way valve, a main stuffing box, a flushing fluid guide ring and an isolated body. The stuffing body is coated at the periphery of the plunger, the front end of the stuffing body is connected with a pump head, the rear end is connected with a power part, the isolated body is arranged between the inside of the stuffing body and the plunger, the isolated body is of a tooth slot-shaped structure, and the flushing fluid guide ring is arranged behind the isolated body. The stuffing body and the plunger are sealed through the main stuffing box, the main stuffing box is compressed through the main stuffing press cover, the main stuffing press cover is in threaded connection with the stuffing body, and the main stuffing press cover is sealed through an O-shaped seal ring. The main stuffing box is a plurality of groups of stuffing which is formed by alternately assembling a packing and a lined ring, and performs an absolute sealing action on a pump conveying medium. The main stuffing press cover and the plunger are sealed through the auxiliary stuffing box, and the auxiliary stuffing box is compressed through the auxiliary stuffing press cover.