Mechanical joint coating device for gathering and transportation pipeline of oil field

Abstract

The utility model relates to the technical field of oil field gathering and transportation pipelines, and particularly discloses a mechanical joint coating device for an oil field gathering and transportation pipeline, which comprises a hot patching mechanism, a fan and a constant-temperature heater, the hot patching mechanism comprises two sets of quick release hoops which are coaxially arranged, the top of each set of quick release hoop is provided with a vertically-arranged lead screw lifter, a transversely-arranged electric sliding table is erected at the lifting ends of the two sets of lead screw lifters, and the sliding end of the electric sliding table is downwards connected with a vertical rod. An annular air duct is mounted at the bottom of the vertical rod, and an air outlet is formed in the inner wall of the air duct; and the air duct, the fan and the constant-temperature heater are connected through a circulating pipeline. By adopting a mechanical joint coating technology, the joint coating quality can be improved, and the risk and the labor intensity in the operation process are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield gathering pipeline technical field, concretely relates to a mechanized joint coating device for oilfield gathering pipeline. BACKGROUND

[0002] At present, the hot shrink sleeve anticorrosion joint coating operation of the oilfield gathering 3PE anticorrosion steel pipeline still adopts manual operation, that is, the hot shrink sleeve is baked by artificial baking, and the whole hot joint coating operation is operated by experience, and the baking generally selects a flame gun, for example, a kind of novel hydrogen oxygen flame gun disclosed in patent No. CN201210572514.5;

[0003] The quality of joint coating operation is not the same, and there are problems such as wrinkles, bubbles, carbonization, and uneven overflow of circumferential adhesive on the surface of the heat shrink sleeve, so the quality of anticorrosion joint coating cannot be guaranteed.

[0004] In addition, the joint coating by artificial baking has many problems such as great safety and environmental protection hidden danger, poor labor environment of workers, and great labor intensity. INVENTION CONTENTS

[0005] The utility model aims at the defects of the prior art, and provides a mechanized joint coating device for oilfield gathering pipeline, which can improve the joint coating quality and reduce the operation process risk and labor intensity by adopting the mechanized joint coating technology.

[0006] The technical scheme of the utility model is: a mechanized joint coating device for oilfield gathering pipeline, comprising a hot joint coating mechanism, a fan and a constant temperature heater.

[0007] The hot joint coating mechanism comprises two sets of coaxially arranged quick release hoops, a vertical arranged screw rod lifter is installed at the top of each set of quick release hoops, and a horizontally arranged electric sliding table is erected at the lifting end of the two sets of screw rod lifters, the sliding end of the electric sliding table is connected downward with a vertical rod, an annular air duct is installed at the bottom of the vertical rod, and an air outlet is arranged on the inner wall of the air duct.

[0008] The air duct, the fan and the constant temperature heater are connected through a circulating pipeline.

[0009] Preferably, the part between the air duct and the fan on the circulating pipeline is sequentially connected with a first electromagnetic valve and a tee joint, and a cold air branch is connected through the tee joint, and a second electromagnetic valve is connected on the cold air branch.

[0010] Preferably, the screw rod lifter is an electric screw rod lifter.

[0011] Preferably, it further comprises a main control unit, and the main control unit is electrically connected with the screw rod lifter, the constant temperature heater and the electric sliding table respectively.

[0012] Preferably, the electric sliding table is provided with a displacement sensor for detecting the position of the sliding end of the electric sliding table.

[0013] Preferably, the quick-release hoop comprises an upper half hoop and a lower half hoop, one side of the upper half hoop and the lower half hoop is hinged, and the other side is detachably connected, and a circular clamping cavity is formed between the upper half hoop and the lower half hoop.

[0014] Preferably, a group of grommets arranged in layers are placed in the clamping cavity of the quick-release hoop.

[0015] Preferably, the grommet is composed of two half-ring tiles.

[0016] Compared with the prior art, the utility model has the following advantages: the electric sliding table drives the wind cylinder to reciprocate at a uniform speed, and the constant temperature heater supplies temperature-stable high-temperature wind to the wind cylinder, so that the heat shrink sleeve surface is uniformly heated and uniformly shrinks.

[0017] During the repairing operation, the wind cylinder reciprocates at a uniform speed from one side of the heat shrink sleeve to the other side, and the wind pressure is provided around the outer periphery of the heat shrink sleeve from the wind cylinder, so that the heat shrink sleeve is uniformly pressed on the surface of the pipeline, which is beneficial to remove the bubbles and hollows in the heat shrink sleeve, and the surface of the heat shrink sleeve is smooth and wrinkle-free after the repairing operation, and the quality requirement is met.

[0018] The mechanical repairing technology can improve the repairing quality and reduce the operation process risk and labor intensity, and from the development trend, it is inevitable to use the mechanical instead of manual in the anticorrosion repairing operation of the steel gathering pipeline in the oil field. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model;

[0020] Figure 2 It is a structural schematic view of the heat repairing mechanism;

[0021] Figure 3 It is a use reference view of the heat repairing mechanism;

[0022] Figure 4 It is a structural schematic view of the quick-release hoop;

[0023] In the drawing: 1, heat repairing mechanism, 2, wind cylinder, 3, first electromagnetic valve, 4, three-way, 5, cold air branch, 6, second electromagnetic valve, 7, fan, 8, constant temperature heater, 9, circulating pipeline, 10, screw rod lifter, 11, quick-release hoop, 12, electric sliding table, 13, sliding end, 14, displacement sensor, 15, vertical rod, 16, air outlet, 17, grommet, 18, upper half hoop, 19, lower half hoop, 20, pipeline, 21, heat shrink sleeve. DETAILED DESCRIPTION

[0024] The utility model is further illustrated below in combination with the drawings and embodiments. Embodiment 1

[0025] As Figures 1 to 3 The mechanical joint repairing device for oilfield gathering pipelines mainly comprises a hot repairing mechanism 1, a fan 7 and a constant temperature heater 8.

[0026] The hot repairing mechanism 1 comprises two sets of coaxially arranged quick-release collars 11, the top of each set of quick-release collars 11 is provided with a vertically arranged screw rod lifter 10, and the lifting ends of the two sets of screw rod lifters 10 are provided with a horizontally arranged electric sliding table 12.

[0027] The sliding end 13 of the electric sliding table 12 is connected downward with a group of vertical rods 15, the bottom of the vertical rod 15 is provided with an annular air duct 2, and the inner wall of the air duct 2 is provided with an air outlet 16, which is a group of screen holes formed around the inner wall of the air duct 2.

[0028] The air duct 2, the fan 7 and the constant temperature heater 8 are connected through a circulating pipeline 9.

[0029] During the joint repairing operation, first, Figure 3 the hot shrink sleeve 21 is sleeved on the outer side of the pipeline 20 to be repaired, then the hot repairing mechanism 1 is fixed on the pipeline 20 through the quick-release collar 11, and the air duct 2 is sleeved on the outer side of the hot shrink sleeve 21, and the supporting height of the screw rod lifter 10 is adjusted to align the air duct 2 with the axis of the hot shrink sleeve 21;

[0030] Then the constant temperature heater 8 is started, and when the temperature of the constant temperature heater 8 rises and stabilizes at 260℃, the fan 7 is started to deliver hot air to the air duct 2, and a hot air circulation between the air duct 2 and the constant temperature heater 8 is established;

[0031] Finally, the electric sliding table 12 is started to drive the air duct 2 to reciprocate at a uniform speed, and the temperature-stable high-temperature air supplied by the constant temperature heater 8 to the air duct 2 can make the surface of the hot shrink sleeve 21 uniformly heated and uniformly and stably shrink.

[0032] During the joint repairing operation, the air duct 2 reciprocates at a uniform and stable speed from one side of the hot shrink sleeve 21 to the other side, and the air duct 2 provides circumferential air pressure to the outer periphery of the hot shrink sleeve 21, so that the hot shrink sleeve 21 is uniformly pressed on the surface of the pipeline 20, which is beneficial to the elimination of air bubbles and hollows in the hot shrink sleeve 21, and the surface of the hot shrink sleeve 21 is smooth and wrinkle-free after the joint repairing operation, meeting the quality requirements.

[0033] The use of mechanical joint repairing technology can improve the joint repairing quality, reduce the risk and labor intensity during the operation process, and from the development trend, it is inevitable to use mechanical instead of manual in the anticorrosion joint repairing operation of the steel gathering pipelines in oilfields. Embodiment 2

[0034] This embodiment is further optimized on the basis of the above embodiment, specifically:

[0035] The part of the circulating pipeline 9 between the air duct 2 and the fan 7 is connected with the first electromagnetic valve 3 and the three-way pipe 4 in sequence, and connected with the cold air branch 5 through the three-way pipe 4, and the second electromagnetic valve 6 is connected on the cold air branch 5.

[0036] After the patching operation is completed, the second electromagnetic valve 6 is opened, the first electromagnetic valve 3 is closed, the constant temperature heater 8 is heated, and the air enters the circulating pipeline 9 from the cold air branch 5, which can cool the heat shrink sleeve 21, the air duct 2 and the constant temperature heater 8. Embodiment 3

[0037] This embodiment is further optimized on the basis of the above embodiment, specifically:

[0038] This embodiment also includes a master controller, and the lead screw lifter 10 is selected as an electric lead screw lifter 10;

[0039] The master controller is electrically connected with the lead screw lifter 10, the constant temperature heater 8 and the electric sliding table 12, and the master controller is selected as an integrated industrial computer currently used in oil field mechanical equipment, which is mainly used to control the start and stop of the lead screw lifter 10, the constant temperature heater 8 and the electric sliding table 12.

[0040] In addition, the electric sliding table 12 is provided with a displacement sensor 14 for detecting the position of the sliding end 13 of the electric sliding table 12, and the displacement sensor 14 is electrically connected with the master controller. The displacement sensor detects the moving position of the sliding end 13, so that the master controller can control the moving distance of the sliding end 13 during the patching operation. Embodiment 4

[0041] This embodiment is further optimized on the basis of the above embodiment, specifically:

[0042] As Figure 4 , the quick release ring 11 includes an upper half ring 18 and a lower half ring 19, one side of the upper half ring 18 and the lower half ring 19 is hinged, and the other side is detachably connected. The detachable way can be connected by buckle or bolt.

[0043] The upper half ring 18 and the lower half ring 19 form a circular clamping cavity between them, and the quick release ring 11 can be clamped and fixed on the pipeline 20 through the circular clamping cavity. Embodiment 5

[0044] This embodiment is further optimized on the basis of the above embodiment, specifically:

[0045] A group of stacked grommets 17 are placed in the clamping cavity of the quick release ring 11;

[0046] The gasket ring 17 can be flexible and easy to be sleeved outside the pipe 20. By using gasket rings 17 with different thickness outside the pipe 20, the quick release ring clamp 11 can be downwardly compatible with pipes 20 with different diameters;

[0047] In addition, the gasket ring 17 can also be rigid, at this time the gasket ring 17 is made of two half-ring tiles and is easy to be buckled on the outer wall of the pipe 20.

[0048] The utility model is not limited to the above-mentioned implementation, still can make various changes in the knowledge range of the person skilled in the art without departing from the purpose of the utility model, the changed content still belongs to the protection range of the utility model.

Claims

1. A mechanized patching device for oilfield gathering and transportation pipelines, characterized by: Including hot patching mechanism, fan and constant temperature heater; The hot patching mechanism includes two sets of coaxially arranged quick-release hoops, each set of which is equipped with a vertically arranged screw lifter on the top, and a horizontally arranged electric slide is mounted on the lifting ends of the two sets of screw lifters, the sliding end of the electric slide is downwardly connected to a vertical pole, and an annular air duct is installed at the bottom of the vertical pole, and an air outlet is provided on the inner wall of the air duct; The air duct, the air blower and the constant temperature heater are connected through a circulation pipeline.

2. The mechanized patching device for oilfield gathering and transportation pipelines according to claim 1 is characterized in that: The portion of the circulation pipeline between the air duct and the fan is sequentially connected to a first solenoid valve and a tee, and is connected to a cold air branch via the tee, and the cold air branch is connected to a second solenoid valve.

3. The mechanized patching device for oilfield gathering and transportation pipelines according to claim 1, characterized in that: The screw lifter is an electric screw lifter.

4. The mechanized patching device for oilfield gathering and transportation pipelines according to claim 3 is characterized in that: It also includes a main controller, which is electrically connected to the screw lifter, the constant temperature heater and the electric slide respectively.

5. The mechanized patching device for oilfield gathering and transportation pipelines according to claim 4 is characterized in that: The electric slide is provided with a displacement sensor for detecting the position of the sliding end of the electric slide.

6. The mechanized patching device for oilfield gathering and transportation pipelines according to claim 1, characterized in that: The quick-release ring comprises an upper half ring and a lower half ring, one side of the upper half ring and the lower half ring are hinged, and the other side is detachably connected, and a circular clamping cavity is formed between the upper half ring and the lower half ring.

7. The mechanized patching device for oilfield gathering and transportation pipelines according to claim 6, characterized in that: A group of stacked gaskets are placed in the clamping cavity of the quick-release hoop.

8. The mechanized patching device for oilfield gathering and transportation pipelines according to claim 7, characterized in that: The gasket is formed by splicing two semi-annular tiles.

Images