High-pressure tee joint for ground blowout prevention

Abstract

The utility model discloses a high-pressure tee joint for ground blowout prevention, which belongs to the technical field of tee joints for oilfield exploitation and comprises a three-way pipe and a connecting pipeline, and first flanges are fixedly sleeved on the outer sides of three ends of the three-way pipe. According to the three-way pipe, the first supporting pipe, the second supporting pipe and the third supporting pipe are welded in the three-way pipe, and a wear-resisting and pressure-resisting three-way mechanism composed of the first supporting pipe, the second supporting pipe and the third supporting pipe is used for supporting in the three-way pipe; meanwhile, the abrasion-resistant and pressure-resistant three-way mechanism can prevent oil gas from abrading the inner wall of the three-way pipe when the oil gas flows at the corner of the three-way pipe, in addition, a plurality of outer reinforcing rings are welded to the outer side of the three-way pipe, the strength of the three-way pipe is enhanced through the abrasion-resistant and pressure-resistant three-way mechanism and the outer reinforcing rings, the overall strength of the three-way pipe is guaranteed, and the service life of the three-way pipe is prolonged. And the three-way pipe is prevented from being damaged by high-pressure oil gas.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield exploitation tee technology field more specifically, relate to a ground blowout preventer high pressure tee. BACKGROUND

[0002] The ground blowout preventer is a kind of safety equipment installed on wellhead ground, main function is when the well blowout etc. Emergency, wellhead is quickly closed, prevent dangerous material such as oil and gas from being sprayed, to ensure the safety of personnel and equipment, it is indispensable important component in drilling operation, has key role to prevent and control blowout accident.In the overall structure of ground blowout preventer, tee joint needs to be used, tee joint can be subjected to the pressure of oil and gas when ground blowout preventer is used, when tee pressure resistance is not good, the use safety of ground blowout preventer is influenced, in addition, tee joint is generally connected with other pipe fittings by welding or flange alone, when oil and gas pressure is too large, its safety can also be influenced, for this purpose, a ground blowout preventer high pressure tee is provided. UTILITY MODEL CONTENTS

[0003] In view of the problems in the above background art, the utility model aims to provide a ground blowout preventer high pressure tee.

[0004] To solve the above problems, the utility model adopts the following technical scheme:

[0005] A ground blowout preventer high pressure tee, including tee pipe and connecting pipeline, the outer side of the three ends of the tee pipe is fixedly sleeved with first flange, a plurality of first connecting holes are respectively formed in the first flange, the end of the connecting pipeline is fixedly sleeved with second flange, a plurality of second connecting holes are formed in the second flange, connecting mechanism is arranged between the end of the connecting pipeline and the end of the tee pipe, wear-resistant pressure-resistant tee mechanism is arranged in the inside of the tee pipe, the wear-resistant pressure-resistant tee mechanism includes first support pipe, second support pipe and third support pipe respectively sleeved in the three ends of the inner cavity of the tee pipe, first weld is arranged between the inner wall of the tee pipe and the one end of the first support pipe, second support pipe and third support pipe, the other end of the first support pipe, second support pipe and third support pipe is connected with each other, plug weld hole is formed in the outside of the three ends of the tee pipe, the outside of the three ends of the tee pipe is sleeved with outer reinforcing ring, second weld is arranged between the two ends of the outer reinforcing ring and the outer side of the tee pipe.

[0006] As a preferred scheme of the utility model, the connecting mechanism comprises two arc-shaped rubber sealing rings sleeved on the outer side of one end of the tee pipe and one end of the connecting pipeline, the inner side surface of the two arc-shaped rubber sealing rings is attached to the outer side surface of the tee pipe and the connecting pipeline, the end surface of the two arc-shaped rubber sealing rings is respectively in contact with the end surface of the second flange and the first flange, a plurality of perforations are formed in the arc-shaped rubber sealing ring, a bolt is sleeved in the plurality of perforations, one end of the bolt is sleeved in the second connecting hole, and the other end of the bolt penetrates the inner cavity of the first connecting hole and is provided with a nut in a threaded mode.

[0007] As a preferred scheme of the utility model, the three end portions of the tee pipe and the end portion of the connecting pipeline are provided with butt welding grooves.

[0008] As a preferred scheme of the utility model, the outer side surface of the first supporting pipe, the second supporting pipe and the third supporting pipe is attached to the inner wall of the tee pipe.

[0009] As a preferred scheme of the utility model, the end surface of one end of the first supporting pipe, the second supporting pipe and the third supporting pipe is provided with a flow guide slope.

[0010] As a preferred scheme of the utility model, the outer diameter of the tee pipe is equal to the inner diameter of the outer reinforcing ring.

[0011] As a preferred scheme of the utility model, the inner diameters of the second connecting hole, the first connecting hole and the perforation are equal to the outer diameter of the bolt.

[0012] The utility model has the advantages of:

[0013] (1) in the utility model, the first supporting pipe, the second supporting pipe and the third supporting pipe are welded in the tee pipe, the wear-resistant and pressure-resistant tee mechanism composed of the first supporting pipe, the second supporting pipe and the third supporting pipe supports in the tee pipe, meanwhile, the wear-resistant and pressure-resistant tee mechanism can avoid the abrasion of the inner wall of the tee pipe when oil gas flows in the corner of the tee pipe; in addition, a plurality of outer reinforcing rings are welded on the outer side of the tee pipe, the strength of the tee pipe is enhanced by the wear-resistant and pressure-resistant tee mechanism and the outer reinforcing ring, the strength of the whole tee pipe is ensured, and the tee pipe is prevented from being damaged by high-pressure oil gas.

[0014] (2) in the utility model, when the tee pipe and the connecting pipeline are connected, welding is carried out in the butt welding groove of the end portions of the butt-jointed tee pipe and connecting pipeline, in addition, two arc-shaped rubber sealing rings are sleeved on the outer side of the joint between the tee pipe and the connecting pipeline, and the arc-shaped rubber sealing ring, the first flange and the second flange are connected by the cooperation of the bolt and the nut, which can ensure the connecting strength between the tee pipe and the connecting pipeline and the sealing property of the butt-jointed portion of the tee pipe and the connecting pipeline, and has good practicability. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the whole structure explosion drawing of the utility model;

[0017] Figure 3 It is the section view schematic diagram of the wear-resistant and pressure-resistant tee joint mechanism of the utility model;

[0018] Figure 4 It is the structure schematic diagram of the tee pipe of the utility model;

[0019] Figure 5 It is the structure explosion drawing of the wear-resistant and pressure-resistant tee joint mechanism of the utility model;

[0020] Figure 6 It is the structure schematic diagram of the rubber sealing ring of the utility model.

[0021] Mark explanation in drawing:

[0022] 1, tee pipe;2, connecting pipeline;3, first flange;4, second flange;5, connecting mechanism;6, second connecting hole;7, first connecting hole;8, wear-resistant and pressure-resistant tee joint mechanism;9, first support pipe;10, second support pipe;11, third support pipe;12, first weld;13, plug weld hole;14, outer reinforcing ring;15, second weld;16, flow guide slope;17, butt joint weld groove;18, arc-shaped rubber sealing ring;19, perforation;20, bolt;21, nut. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] In the description of the utility model, it should be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "set with", "sleeve / joint", "connection" and so on, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements, for the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0026] Embodiment:

[0027] Please refer to Figures 1-6 A high-pressure tee joint for ground blowout prevention, comprising a tee pipe 1 and a connecting pipe 2, a first flange 3 is fixedly sleeved on the outer side of the three ends of the tee pipe 1, a plurality of first connecting holes 7 are formed in the first flange 3, a second flange 4 is fixedly sleeved on the end of the connecting pipe 2, a plurality of second connecting holes 6 are formed in the second flange 4, a connecting mechanism 5 is arranged between the end of the connecting pipe 2 and the end of the tee pipe 1, a wear-resistant and pressure-resistant tee mechanism 8 is arranged in the tee pipe 1, the wear-resistant and pressure-resistant tee mechanism 8 comprises a first supporting pipe 9, a second supporting pipe 10 and a third supporting pipe 11 which are sleeved in the inner cavities of the three ends of the tee pipe 1 respectively, a first weld 12 is arranged between one end of the first supporting pipe 9, the second supporting pipe 10 and the third supporting pipe 11 and the inner wall of the tee pipe 1, the other ends of the first supporting pipe 9, the second supporting pipe 10 and the third supporting pipe 11 are connected with each other, plug weld holes 13 are formed in the outer sides of the three ends of the tee pipe 1, outer reinforcing rings 14 are sleeved on the outer sides of the three ends of the tee pipe 1, and second welds 15 are arranged between the two ends of the outer reinforcing rings 14 and the outer side surfaces of the tee pipe 1.

[0028] In the embodiment, one end of the first supporting pipe 9, the second supporting pipe 10 and the third supporting pipe 11 can be welded by inserting a welding gun into the inner cavities thereof.

[0029] Specifically, please refer to Figure 1 , Figure 2 and Figure 6 The connecting mechanism 5 comprises two arc-shaped rubber sealing rings 18 which are sleeved on the outer sides of one end of the tee pipe 1 and one end of the connecting pipe 2, the inner side surfaces of the two arc-shaped rubber sealing rings 18 are in abutment with the outer side surfaces of the tee pipe 1 and the connecting pipe 2, the end surfaces of the two arc-shaped rubber sealing rings 18 are in contact with the end surfaces of the second flange 4 and the first flange 3 respectively, a plurality of perforations 19 are formed in the arc-shaped rubber sealing rings 18, a plurality of bolts 20 are sleeved in the perforations 19, one end of the bolt 20 is sleeved in the second connecting hole 6, and the other end of the bolt 20 penetrates through the inner cavity of the first connecting hole 7 and is screw-mounted with a nut 21.

[0030] In the embodiment, the arc-shaped rubber sealing ring 18 is used to seal the outer side of the joint between the tee pipe 1 and the connecting pipe 2, thereby assisting the welding between the tee pipe 1 and the connecting pipe 2 and ensuring the connection strength and sealing performance between the tee pipe 1 and the connecting pipe 2.

[0031] Specifically, please refer to Figure 2 The three end portions of the tee pipe 1 and the end portion of the connecting pipe 2 are provided with joint welding grooves 17.

[0032] In the embodiment, when the end portions of the tee pipe 1 and the connecting pipe 2 are jointed, the joint welding grooves 17 are welded.

[0033] Specifically, please refer to Figure 3 The outer side surfaces of the first support pipe 9, the second support pipe 10 and the third support pipe 11 are attached to the inner wall of the tee pipe 1.

[0034] In the embodiment, the stability of the first support pipe 9, the second support pipe 10 and the third support pipe 11 being sleeved in the inner cavity of the tee pipe 1 is ensured.

[0035] Specifically, please refer to Figure 3 The end surfaces of one end of the first support pipe 9, the second support pipe 10 and the third support pipe 11 are provided with flow guide slopes 16.

[0036] In the embodiment, the flow guide slopes 16 are used to guide the oil gas flowing into the inner cavity of the tee pipe 1, so as to avoid the influence of the first support pipe 9, the second support pipe 10 and the third support pipe 11 welded in the inner cavity of the tee pipe 1 on the flow of the oil gas.

[0037] Specifically, please refer to Figure 2 The outer diameter of the tee pipe 1 is equal to the inner diameter of the outer reinforcing ring 14.

[0038] In the embodiment, the stability of the outer reinforcing ring 14 welded on the tee pipe 1 is ensured, the strength of the tee pipe 1 is enhanced by using the outer reinforcing ring 14, and the outer side of the plug welding hole 13 is sealed by the outer reinforcing ring 14.

[0039] Specifically, please refer to Figure 2 and Figure 6 The inner diameters of the second connecting hole 6, the first connecting hole 7 and the through hole 19 are equal to the outer diameter of the bolt 20.

[0040] In the embodiment, the stability of the bolt 20 sleeved in the second connecting hole 6, the first connecting hole 7 and the through hole 19 is ensured, so as to ensure the stability of the installation of the arc-shaped rubber sealing ring 18.

[0041] Working principle: when the high-pressure tee is produced, first, the first support pipe 9, the second support pipe 10 and the third support pipe 11 are inserted into the three ends of the inner cavity of the tee pipe 1, and the ends of the first support pipe 9, the second support pipe 10 and the third support pipe 11 are in contact, thereby combining into the wear-resistant and pressure-resistant tee mechanism 8, and the end of the welding gun is inserted into the inner cavity of the first support pipe 9, the second support pipe 10 and the third support pipe 11 to weld the joint, thereby connecting the ends of the first support pipe 9, the second support pipe 10 and the third support pipe 11, and the other end of the first support pipe 9, the second support pipe 10, the third support pipe 11 and the inner wall of the tee pipe 1 are welded by the welding gun, thereby fixing the wear-resistant and pressure-resistant tee mechanism 8 in the inner cavity of the tee pipe 1, then plug welding is carried out in the plug welding hole 13 on the side of the tee pipe 1, so as to reinforce the first support pipe 9, the second support pipe 10 and the third support pipe 11, and three outer reinforcing rings 14 are sleeved on the outside of the tee pipe 1, the outer reinforcing rings 14 are arranged outside the plug welding hole 13, and the ends of the outer reinforcing rings 14 are welded, so that the outer reinforcing rings 14 are welded on the outside of the tee pipe 1, and finally the first flange 3 is welded on the outside of the three ends of the tee pipe 1.

[0042] When the tee pipe 1 and the connecting pipe 2 are connected, first, the second flange 4 is welded on the outside of the connecting pipe 2, then the end of the connecting pipe 2 and the end of the tee pipe 1 are in contact, welding is carried out in the butt joint groove 17 of the ends of the tee pipe 1 and the connecting pipe 2, so as to weld and connect the tee pipe 1 and the connecting pipe 2, then the two arc-shaped rubber sealing rings 18 are sleeved on the outside of the joint of the tee pipe 1 and the connecting pipe 2, finally the bolt 20 is inserted into the second connecting hole 6, the perforation 19 and the first connecting hole 7, and the nut 21 is threadedly installed on the end of the bolt 20, thereby reinforcing the connection between the tee pipe 1 and the connecting pipe 2, and the sealing between the tee pipe 1 and the connecting pipe 2 is ensured by the arc-shaped rubber sealing ring 18.

[0043] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A high-pressure tee for use in ground blowout prevention, comprising a tee pipe (1) and a connecting pipe (2), characterized in that: The outer side of the three-way pipe (1) is fixedly sleeved with a first flange (3), a plurality of first connecting holes (7) are formed in the first flange (3), the end of the connecting pipeline (2) is fixedly sleeved with a second flange (4), a plurality of second connecting holes (6) are formed in the second flange (4), a connecting mechanism (5) is arranged between the end of the connecting pipeline (2) and the end of the three-way pipe (1), a wear-resistant and pressure-resistant three-way mechanism (8) is arranged in the three-way pipe (1), the wear-resistant and pressure-resistant three-way mechanism (8) comprises a first supporting pipe (9), a second supporting pipe (10) and a third supporting pipe (11) which are respectively sleeved in the inner cavities of the three ends of the three-way pipe (1), a first weld (12) is arranged between one end of the first supporting pipe (9), the second supporting pipe (10) and the third supporting pipe (11) and the inner wall of the three-way pipe (1), the other ends of the first supporting pipe (9), the second supporting pipe (10) and the third supporting pipe (11) are connected with each other, plug weld holes (13) are formed in the outer sides of the three ends of the three-way pipe (1), outer reinforcing rings (14) are sleeved on the outer sides of the three ends of the three-way pipe (1), and second welds (15) are arranged between the two ends of the outer reinforcing rings (14) and the outer sides of the three-way pipe (1).

2. A high pressure tee for use in ground blowout prevention according to claim 1, characterized in that: The connecting mechanism (5) comprises two arc-shaped rubber sealing rings (18) which are sleeved on the outer sides of one end of the three-way pipe (1) and one end of the connecting pipeline (2), the inner side surfaces of the two arc-shaped rubber sealing rings (18) are attached to the outer side surfaces of the three-way pipe (1) and the connecting pipeline (2), the end surfaces of the two arc-shaped rubber sealing rings (18) are respectively in contact with the end surfaces of the second flange (4) and the first flange (3), a plurality of perforations (19) are formed in the arc-shaped rubber sealing ring (18), a bolt (20) is sleeved in each of the plurality of perforations (19), one end of the bolt (20) is sleeved in the second connecting hole (6), and the other end of the bolt (20) penetrates the inner cavity of the first connecting hole (7) and is threadedly connected with a nut (21).

3. A high pressure tee for use in ground blowout prevention according to claim 1, characterized in that: The three ends of the three-way pipe (1) and the end of the connecting pipeline (2) are provided with butt weld grooves (17).

4. A high pressure tee for use in ground blowout prevention according to claim 1, characterized in that: The outer side surfaces of the first supporting pipe (9), the second supporting pipe (10) and the third supporting pipe (11) are attached to the inner wall of the three-way pipe (1).

5. A high pressure tee for use in ground blowout prevention according to claim 1, characterized in that: The end surfaces of one end of the first supporting pipe (9), the second supporting pipe (10) and the third supporting pipe (11) are provided with flow guide slopes (16).

6. A high pressure tee for use in ground blowout prevention according to claim 1, characterized in that: The outer diameter of the three-way pipe (1) is equal to the inner diameter of the outer reinforcing ring (14).

7. A high pressure tee for use in ground blowout prevention according to claim 2, characterized in that: The inner diameters of the second connecting hole (6), the first connecting hole (7) and the perforation (19) are equal to the outer diameter of the bolt (20).

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