Choke manifold

Abstract

The invention provides a choke manifold. The choke manifold comprises a choke manifold body and a rotator assembly, wherein the choke manifold body is in threaded connection with a swing pipe; the rotator assembly comprises an upper rotating shaft and a lower rotating shaft; the upper part of the upper rotating shaft is in threaded connection with the choke manifold body; the lower part of the upper rotating shaft is connected with the lower rotating shaft; a bearing seat is fixed on the lower rotating shaft; the upper rotating shaft is rotationally connected in the bearing seat through bearings; a first anti-rotation ring for fixing the upper rotating shaft with the choke manifold body is detachably arranged on the upper rotating shaft in a sleeving way; a second anti-rotation ring for fixing the upper rotating shaft with the bearing seat is detachably arranged on the upper rotating shaft in a sleeving way; the bearings are at least two thrust cylindrical roller bearings which are arranged on the upper rotating shaft one below the other in a sleeving way. Compared with the prior art, the choke manifold has the advantages that the anti-loosening or anti-rotation structure of the choke manifold is connected more stably and is assembled more easily and more conveniently, the rotator assembly can bear higher tension and pressure load, and the rotation stability is enhanced.

Description

technical field [0001] The invention relates to a ground test oil tree which supports the test pipeline, promotes the inflow of oil and controls the outflow of oil, also known as a self-flowing wellhead device. Background technique [0002] The ground test oil tree, also known as self-flowing wellhead device, is installed at the highest end of the test pipeline to support the test pipeline, promote the inflow of oil and control the outflow of oil. There is usually a wing valve on the test tree, which is used to connect to the fail-closed safety valve. The wing valve is controlled by the console on the drilling floor, and the emergency shutdown system is also installed on the console to realize remote shut-in of the well. [0003] The testing tree in the prior art includes a primary main valve and a secondary main valve, and a dynamic swivel is installed between the two. When the testing tree is kept fixed, the pipeline can be rotated, and at the same time, it can prevent the...

AI Technical Summary

Problems solved by technology

Due to the uncertainty of the thread screw-in point, the mounting grooves and holes of the flat key 200 and the screw 300 need to be assembled and matched. Due to the limited space and the size of the connected parts, the difficulty of processing increases, and machining iron will be generated. The discharge of chips directly affects the service life of the test oil tree products

[0005] (2) if figure 2 As shown, the bearings in the rotator assembly 400 adopt a tapered roller bearing 600 and a thrust cylindrical roller bearing 500, and the tapered roller bearing 600 is installed between the upper rotating shaft 410 and the lower rotating shaft 420 of the rotator assembly 400 Between, the bearing housing 800 is threadedly connected with the lower rotating shaft 420, since the force direction of the tapered roller bearing 600 is inclined to the axial direction of the upper rotating shaft 410 and the lower rotating shaft 420, it may cause the rotator assembly 400 to rotate shock

[0006] (3) The T-shaped sealing ring 700 is used between the upper rotating shaft 410 and the lower rotating shaft 420 of the rotator assembly 400, and the sealing effect is not good

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