9/14/2020 0 Comments Stuffing Box Assembly
The portion of the refined fishing rod which wears by advantage of its passage through the metal seal off at the lower end of the extension tube never is certainly reciprocated into the filling box so as to induce use in the stuing container closes or the packing of the filling box.Google provides not performed a lawful analysis and makes no counsel as to the precision of the standing listed.).Google has not carried out a lawful evaluation and can make no counsel or warranty as to the accuracy of the checklist.).Google provides not carried out a legal evaluation and can make no portrayal as to the precision of the day outlined.).
TYNAN ATTOPNY United Expresses Patent U 3,209,830 Filling BOX Set up Gerald H. ![]() These stutling boxes also perform to cap or close off off the higher end of the tubing chain of the essential oil well and are generally situated above the pumping Capital t which diverts the essential oil from the tubing thread to a ow collection for conveyance to storage facilities. It offers been generally characteristic of stutling boxes that these devices consist of a housing through which the refined fishing rod of the sucker fishing rod string goes by, and more include some type of packaging surrounded within the housing and around the polished rod. The stuing package also conventionally contains a threaded sIeeve around the casing which can be formed integrally with a data compresion band which extends down into the housing and bears against the packaging therein. By modifying, from period to time, the placement of the thréaded sleeve on thé casing, the packing may end up being compacted to a better degree to make up for use of the packing by the constant reciprocation of the refined fishing rod therethrough. Stuffing Box Assembly Free Of DeleteriousThe provision of lubrication in this manner, of course, decreases the frictional use of the refined pole on the packing and also 1assists in keeping the peripheral surface of the refined rod clean and free of deleterious materials. Such breakdowns are usually engendered by several conditions which may become existing in -better or smaller degree in any pumping situation. Therefore, in some wells, Very high pressures are created in the flow range of the Nicely, as nicely as in the tubing thread, and these stresses raise the put on to which the stuftling box seals around the polished rod are usually subjected. Furthermore, if the conditions at the surface of the floor around the good are extremely dirty, the polished rod selects up a substantial quantity of dust and dust on its surface area as it is certainly drawn upwardly through the stuing package and this dirt is after that carried down through the packaging of the stutling box, wearing apart the packaging and eradicating the seals of the stuing box. This situation is irritated where the Huid getting pumped from the well is especially unclean or is definitely saline or can be highly corrosive. In nearly all situations, the stuifing box will need daily servicing and, in effect, permanent ladjustment of the compression on the packing therein in order to preserve a restricted seal around the polished rod and avoid loss of production liquids through the filling box. For the benefit of clarity in detailing and describing the existing innovation, it may end up being mentioned at the outset that the stuffing box set up of the invention can be of the type which is certainly adapted to become used in an oil well which includes a tubing thread through which the essential oil is created, a moving T nearby the top of the tubing thread for directing oil from the tubing string into an essential oil flow range major to storage space, a line of sucker supports increasing downwardly into the tubing line for moving the essential oil upwardly in the tubing string, a refined rod connected to the top of the thread of sucker fishing rods and increasing through the moving Capital t, and a suitable pumping jack for reciprocating thé sucker lrod chain, like the polished rod, in the tubing string. In add-on to the filling box housing, the packing inside the casing and suitable means for adjusting the compression of the packaging in the casing, the stuing package assembly of the existing invention more consists of an expansion tube which extends downwardly through the moving Capital t and into the tubing line below the moving Capital t, with like extension pipe having within and outside diameters like that the extension tube specifies a first annulus with the refined fishing rod, and a 2nd lannulus with the tubing chain into which it tasks. The rst annulus shaped between the expansion tube and the refined rod will be filled with a clean lubricating fluid therefore that the part of the polished rod which goes through a metal to metallic seal created between the extension tube and the polished pole at the lower finish of the rst annulus can be constantly bathed in clean lubricating liquid during the procedure of the push. Preferably, the extension tube is of like duration that the range between the metal to metallic close off which closes or closes the tirst annuIus at its Iower end and the packaging of the stutling package will be at minimum identical to th-e length of heart stroke of the pump in make use of. In this way, assurance can be offered that that part of the polished fishing rod which moves through the steel to metal seal at the lower finish of the extension pipe will usually move upwardly through a path which lies completely in the clean lubricating fluid, and will certainly not proceed upwardly far good enough to complete through the closes and packing of the stuing package. One embodiment of the innovation furthermore contemplates the addition in the filling box assembly of a ideal pressure responsive device and signaling means, such as a stress switch getting a bell connected in an electrical signal therewith. The pressure switch is certainly placed in communication with the Iubricating uid in thé annulus and is definitely responsive to fluctuations in the pressure of the lubricating fluid. The signaling means is definitely electrically connected to said pressure switch so that variations in the pressure of the lubricating fluid in thé rst annulus wiIl be signaled to an operator. This arrangement allows an user to become apprised of the growth of a leak in the seal off at the lower end of the annuIus between the refined pole and the extension tube since the lubricating fluid in this annulus is generally taken care of at a lower pressure than the pressure prevailing in the tubing thread, and reduction of ethics of the close off at the lower end of the annulus outcomes in essential oil from the tubing thread inltrating the annulus and leading to an increase in the stress therein. The part of the polished rod which wears by virtue of its passing through the metal close off at the lower end of the expansion tube in no way will be reciprocated into the filling box so as to induce put on in the stuing box closes or the packing of the stuffing package.
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