Oil pipe four-way device for oil field wellhead device and Christmas tree

Abstract

The utility model relates to the technical field of four-way pipe devices, in particular to an oil pipe four-way device for an oil field wellhead device and a Christmas tree, which comprises an oil pipe four-way body, large connecting flanges are arranged on the upper side and the lower side of the oil pipe four-way body, connecting pipes are arranged on the left side and the right side of the oil pipe four-way body, and a filter screen is detachably mounted in the oil pipe four-way body. A limiting cover is fixedly connected to the upper surface of the filter screen, a limiting assembly is arranged in the limiting cover and comprises a limiting clamping block, the limiting clamping block is slidably inserted into a limiting groove formed in the inner wall of the limiting cover, and a supporting plate is arranged at the bottom of the filter screen; the device has the beneficial effects that one-key type quick disassembly and assembly of the filter screen are achieved through a linkage structure (limiting clamping blocks, pull rods, springs and the like) of the limiting assembly, the multiple limiting covers are combined for reinforcement and anti-rust and anti-corrosion design, the filter screen assembly and disassembly efficiency is improved, meanwhile, the stability and sealing performance of the device are improved, and the service life is prolonged. The problems that a traditional bolt fixing mode is tedious in operation and high in maintenance cost are thoroughly solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to four -way pipe device technical field, concretely is oil pipe four -way pipe device for oilfield wellhead device and Christmas tree. BACKGROUND

[0002] The Christmas tree is the wellhead device for self -fogging well and machine -picking well and so on and is used to exploit the wellhead device of oil and gas, it is the main equipment of control and adjustment oil and gas production in the most upper part of oil and gas well, mainly has casing head, tubing head, three parts of Christmas tree body composition, oilfield wellhead device and Christmas tree are the important equipment in the process of oil and gas exploitation, are used to connect the equipment in well and ground facilities, guarantee the efficient flow and operating safety of oil and gas. Oil pipe four -way pipe device as the key component thereof, its design and function directly affect the efficiency and safety of the whole oil and gas exploitation system.

[0003] In the prior art, in the oil production operation, the crude oil extracted from the ground usually carries a certain amount of impurities, such as solid particles such as sand and debris. If these impurities pass through the oil pipe four -way pipe device directly, it is easy to cause the blockage of the internal passage, thereby affecting the oil production efficiency and the normal use effect of the equipment. In order to solve this problem, the current common technical means is to install a filter screen in the oil pipe four -way pipe body to filter the impurities in the crude oil and prevent the occurrence of blockage.

[0004] However, the existing filter screen installation method has obvious technical defects. Specifically, the filter screen is generally positioned and fixed through the cooperation of the bolts arranged in a circumferential array and the nuts with the mounting holes on the filter screen. Although this installation method can realize the positioning of the filter screen, due to the narrow internal space of the oil pipe four -way pipe body, the worker needs to repeatedly turn the nuts to complete the installation or disassembly of the filter screen in actual operation. This process not only takes time and effort, but also significantly reduces the installation and disassembly efficiency of the filter screen, thereby affecting the cleaning efficiency and maintenance convenience of the entire equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an oil pipe four -way pipe device for oilfield wellhead device and Christmas tree to solve the problems raised in the above background.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: an oil pipe four -way pipe device for oilfield wellhead device and Christmas tree, comprising: an oil pipe four -way pipe body, a large connecting flange is arranged on the upper and lower sides of the oil pipe four -way pipe body, connecting pipes are arranged on the left and right sides of the oil pipe four -way pipe body, and a filter screen is detachably installed in the oil pipe four -way pipe body.

[0007] A limiting cover is fixedly connected to the upper surface of the filter screen, a limiting assembly is arranged in the limiting cover, the limiting assembly comprises a limiting block, the limiting block is slidably inserted into the limiting groove formed in the inner wall of the limiting cover, and a supporting plate is arranged at the bottom of the filter screen.

[0008] Preferably, the oil pipe four-way body is coated with an anti-rust and anti-corrosion layer on the inner wall, and the large connecting flange is fixedly connected with a rubber pad on one side.

[0009] Preferably, the connecting pipe is symmetrically arranged about the center plane of the oil pipe four-way body, and one end of the connecting pipe is fixedly sleeved in the oil pipe four-way body, and the other end of the connecting pipe is fixedly connected with the regulating valve through cooperation of the small connecting flange, the small bolt and the small nut.

[0010] Preferably, the limiting cover is provided with three limiting covers and is arranged in a circumferential array about the surface of the filter screen, the supporting plate is fixedly connected with the inner wall of the oil pipe four-way body on one side, and the upper surface of the supporting plate is fixedly connected with the supporting sleeve through the supporting column.

[0011] Preferably, the supporting sleeve is slidably connected with a pull rod, the pull rod is fixedly sleeved with a limiting ring at the top, the lower surface of the limiting ring is fixedly connected with the inner wall of the supporting sleeve through a reset spring, the bottom of the pull rod is fixedly connected with a connecting block, and the limiting ring is slidably connected with the inner wall of the supporting sleeve.

[0012] Preferably, the outer circumferential surface of the supporting sleeve and one side of the limiting block are fixedly connected with connecting seats, the connecting seats on the outer circumferential surface of the supporting sleeve are arranged in a circumferential array, the connecting block is rotatably connected with one end of the long connecting rod through a pin shaft, and the other end of the long connecting rod is rotatably connected with the connecting seat on one side of the limiting block through a pin shaft.

[0013] Preferably, the long connecting rod is provided with a short connecting rod on the upper side, one end of the short connecting rod is rotatably connected with the connecting seat on the outer circumferential surface of the supporting sleeve through a pin shaft, and the other end of the short connecting rod is rotatably connected with the connecting seat on one side of the limiting block through a pin shaft.

[0014] Compared with the prior art, the oil pipe four-way body has the advantages that:

[0015] 1. The limiting assembly (including the limiting block, the limiting groove, the pull rod, the reset spring and the like) is innovatively designed, so that the filter screen can be quickly installed and dismounted. Compared with the traditional bolt and nut fixing mode, the design significantly reduces the operation steps, avoids the tedious process of repeatedly screwing the nut in the narrow space, greatly improves the replacement and cleaning efficiency of the filter screen, and optimizes the overall maintenance convenience of the equipment.

[0016] 2. The filter screen is limited and fixed by the three circumferentially arranged limiting covers, so that the stability of the filter screen installation is improved, and displacement or loosening of the filter screen during the oil filtering process is avoided. Meanwhile, the inner wall of the oil pipe four-way body is coated with an anti-rust and anti-corrosion layer, and the sealing performance of the connecting part is ensured, the service life of the equipment is further prolonged, and the leakage risk is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is the overall structure of the utility model overhead schematic diagram.

[0019] Figure 3 It is the overall structure of the utility model internal structure schematic diagram.

[0020] Figure 4 It is the overall structure of the utility model internal structure schematic diagram.

[0021] In the figure: 1, oil pipe four-way body;2, big connecting flange;3, connecting pipe;4, filter screen;5, limit cover;

[0022] 6, limit block;7, limit slot;8, support plate;9, rubber pad;10, small connecting flange;11, regulating valve;12, support column;13, support sleeve;14, pull rod;15, limit ring;16, reset spring;

[0023] 17, connecting block;18, connecting seat;19, long connecting rod;20, short connecting rod. Specific embodiments

[0024] In order to make the purpose, technical scheme of the utility model carry out clearly, completely describe, and the advantage is more clear and distinct, the following combining with the drawing to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiment, only use to explain the embodiment of the utility model, and not for the limitation of the embodiment of the utility model, the all other embodiments of the ordinary skill in the art obtained without doing the premise of the creative labor, belong to the scope of the protection of the utility model.

[0025] Embodiment one: please refer to Figures 1-4 The utility model provides a kind of technical scheme: an oil pipe four-way device for oilfield wellhead device and Christmas tree, it include: oil pipe four-way body 1, oil pipe four-way body 1 as main body, big connecting flange 2 is provided on the upper and lower sides of oil pipe four-way body 1, it is convenient to be connected with external pipeline by the big connecting flange 2 of setting, connecting pipe 3 is provided on the left and right sides of oil pipe four-way body 1, filter screen 4 is detachably installed in oil pipe four-way body 1, impurities in oil are filtered by filter screen 4, limit cover 5 is fixedly connected on the upper surface of filter screen 4, limit assembly is arranged in limit cover 5, limit assembly includes limit block 6, limit block 6 and the limit slot 7 of the inner wall of limit cover 5 are slidably inserted, the size of limit slot 7 is designed to be greater than limit block 6, to ensure that limit block 6 can be assembled in limit slot 7, specifically, the area of limit slot 7 is greater than the area of limit block 6, to form gap between the two, allow a certain degree of relative movement, convenient assembly or provide tolerance, by the insertion of limit block 6 and limit cover 5, to limit limit cover 5, in turn, limit filter screen 4, support plate 8 is provided at the bottom of filter screen 4, support plate 8 is convenient for the limit of filter screen 4.

[0026] The filter screen 4 is first placed on the support plate 8 in the oil pipe cross body 1, clamped in the limiting groove 7 through the limiting block 6 of the limiting assembly, thereby limiting the limiting cover 5, and then limiting and fixing the filter screen 4. The filter screen 4 set can filter the oil collected in the oil liquid, avoid impurities from entering the oil pipe cross body 1 and causing blockage, and through the limiting assembly set, the filter screen 4 can be quickly disassembled, replaced and cleaned, improving the disassembly, replacement and cleaning efficiency. The large connecting flange 2 cooperates with the large bolt and nut to be fixedly connected with the external pipeline, thereby facilitating the transportation of the oil liquid. The connecting pipes 3 installed on the left and right sides of the oil pipe cross body 1 can be used for water injection and well washing operations.

[0027] In the embodiment two, the inner wall of the oil pipe cross body 1 is coated with a rust-proof and corrosion-proof layer, thereby improving the service life of the oil pipe cross body 1. The large connecting flange 2 is fixedly connected with the rubber pad 9 on one side, thereby enhancing the sealing property of the connection. The connecting pipes 3 are symmetrically arranged about the center plane of the oil pipe cross body 1. One end of the connecting pipe 3 is fixedly sleeved in the oil pipe cross body 1. The other end of the connecting pipe 3 is fixedly connected with the regulating valve 11 through the cooperation and adjustment of the small connecting flange 10, the small bolt and the small nut.

[0028] The rubber pad 9 is fixedly installed on the large connecting flange 2, thereby improving the sealing property of the connection between the pipelines. The connecting pipes 3 can be used for water injection and well washing operations. The regulating valve 11 fixedly installed on one end of the connecting pipe 3 through the small connecting flange 10 facilitates the control of the water quantity.

[0029] Example three: on the basis of example two, the limiting cover 5 is provided with three and arranged in a circular array about the surface of the filter screen 4, by providing three limiting covers 5, the stability of the limiting installation of the filter screen 4 is improved, one side of the supporting plate 8 is fixedly connected with the inner wall of the oil pipe four-way body 1, the upper surface of the supporting plate 8 is fixedly connected with the supporting sleeve 13 through the supporting column 12, the supporting sleeve 13 is fixed through the supporting column 12, the supporting sleeve 13 is slidably connected with the pull rod 14, the supporting sleeve 13 limits the pull rod 14, the pull rod 14 is fixedly provided with a limiting ring 15 at the top, the lower surface of the limiting ring 15 is fixedly connected with the inner wall of the supporting sleeve 13 through the reset spring 16, the bottom of the pull rod 14 is fixedly connected with a connecting block 17, the limiting ring 15 is slidably connected with the inner wall of the supporting sleeve 13, the outer circle surface of the supporting sleeve 13 and one side of the limiting block 6 are both fixedly connected with a connecting seat 18, and the connecting seat 18 on the outer circle surface of the supporting sleeve 13 is arranged in a circular array, the connecting block 17 is rotatably connected with one end of the long connecting rod 19 through a pin shaft, the other end of the long connecting rod 19 is rotatably connected with the connecting seat 18 on one side of the limiting block 6 through a pin shaft, the upper side of the long connecting rod 19 is provided with a short connecting rod 20, one end of the short connecting rod 20 is rotatably connected with the connecting seat 18 on the outer circle surface of the supporting sleeve 13 through a pin shaft, the other end of the short connecting rod 20 is rotatably connected with the connecting seat 18 on one side of the limiting block 6 through a pin shaft, the arrangement of the long connecting rod 19 and the short connecting rod 20 facilitates the movement of the limiting block 6.

[0030] When it is necessary to disassemble the filter screen 4, the pull rod 14 is pulled upward, the pull rod 14 drives the limiting ring 15 to slide upward in the supporting sleeve 13, so that the limiting ring 15 stretches the reset spring 16, at the same time, the pull rod 14 also drives the connecting block 17 to move upward, the connecting block 17 drives the limiting block 6 to move toward the axis of the supporting sleeve 13 through the rotating cooperation of the long connecting rod 19, the connecting seat 18 and the pin shaft, and then drives the limiting block 6 to move obliquely downward through the cooperation of the short rod and the connecting seat 18, so that the limiting block 6 slides out of the limiting groove 7, because the movement of the limiting block 6 is not horizontal, the size of the limiting groove 7 is designed to be larger than that of the limiting block 6, so as to ensure that the limiting block 6 can be assembled in the limiting groove 7, specifically, the opening area of the limiting groove 7 is larger than that of the limiting block 6, so as to form a gap between them, allowing a certain degree of relative movement, facilitating assembly or providing tolerance, then the limiting cover 5 is pulled upward to drive the filter screen 4 to slide out of the oil pipe four-way body 1, so as to quickly disassemble the filter screen 4, and then facilitate subsequent replacement and cleaning, when it is necessary to install the filter screen 4, the pull rod 14 is pulled upward, the filter screen 4 is placed on the supporting plate 8, the limiting cover 5 is sleeved on the supporting sleeve 13, the limiting block 6 is aligned with the limiting groove 7, and the pull rod 14 is released, so that the limiting block 6 is inserted into the limiting groove 7 under the reverse elastic force of the reset spring 16, and then the filter screen 4 is limited and fixed, improving the convenience of installation of the filter screen 4.

[0031] Working principle: through the oil pipe four-way body 1 upper and lower two sides of the big connecting flange 2 and external pipeline connection, the left and right sides of the connecting pipe 3 is used for water injection and well washing operation, the regulating valve 11 controls the water injection quantity. The filter screen 4 is installed on the support plate 8, is used for filtering the impurities in the oil, the limiting block 6 in the limiting cover 5 is inserted with the limiting slot 7, and the filter screen 4 is limited and fixed. When the filter screen 4 needs to be disassembled, pull the pull rod 14, the limiting block 6 is separated from the limiting slot 7, and the filter screen 4 is quickly taken out;When installing, place the filter screen 4 on the support plate 8, align the limiting slot 7, loosen the pull rod 14, and the limiting block 6 is automatically fixed. The rust-proof and corrosion-proof layer of the oil pipe four-way body 1 inner wall and the rubber pad 9 on the big connecting flange 2 enhance the corrosion resistance and sealing property of the device, and the overall design improves the efficiency and reliability of the oilfield operation.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tubing cross device for use in oilfield wellheads and Christmas trees, comprising a tubing cross body (1), characterised in that: The oil pipe four-way body (1) is provided with large connecting flanges (2) on the upper and lower sides, and connecting pipes (3) on the left and right sides. The upper surface of the filter screen (4) is fixedly connected with a limiting cover (5), the limiting cover (5) is provided with a limiting assembly, the limiting assembly comprises limiting clamping blocks (6), the limiting clamping blocks (6) are slidably inserted into limiting grooves (7) formed in the inner wall of the limiting cover (5), and the bottom of the filter screen (4) is provided with a supporting plate (8).

2. A tubing spool for use in an oilfield wellhead and Christmas tree according to claim 1, characterised in that: The inner wall of the oil pipe four-way body (1) is coated with a rust-proof and corrosion-proof layer, and the large connecting flange (2) is fixedly connected with a rubber pad (9) on one side.

3. A tubing spool for use in an oilfield wellhead and Christmas tree according to claim 1, characterised in that: The connecting pipes (3) are symmetrically arranged about the center plane of the oil pipe four-way body (1), one end of the connecting pipe (3) is fixedly sleeved in the oil pipe four-way body (1), and the other end of the connecting pipe (3) is fixedly connected with the regulating valve (11) through the cooperation of a small connecting flange (10), a small bolt and a small nut.

4. A tubing spool for use in an oilfield wellhead and Christmas tree according to claim 1, characterized in that: The limiting cover (5) is provided with three limiting covers and is arranged in a circumferential array about the surface of the filter screen (4), one side of the supporting plate (8) is fixedly connected with the inner wall of the oil pipe four-way body (1), and the upper surface of the supporting plate (8) is fixedly connected with the supporting sleeve (13) through the supporting column (12).

5. An oilfield wellhead and tubing spooling device for use with a Christmas tree as defined in claim 4, characterized in that: The supporting sleeve (13) is slidably connected with a pull rod (14), the top of the pull rod (14) is fixedly sleeved with a limiting ring (15), the lower surface of the limiting ring (15) is fixedly connected with the inner wall of the supporting sleeve (13) through a return spring (16), the bottom of the pull rod (14) is fixedly connected with a connecting block (17), and the limiting ring (15) is slidably connected with the inner wall of the supporting sleeve (13).

6. An oilfield wellhead and tubing spooling device for use with a Christmas tree as defined in claim 5, characterized in that: The outer ring surface of the supporting sleeve (13) and one side of the limiting clamping block (6) are fixedly connected with connecting seats (18), the connecting seats (18) on the outer ring surface of the supporting sleeve (13) are arranged in a circumferential array, the connecting block (17) is rotatably connected with one end of a long connecting rod (19) through a pin shaft, and the other end of the long connecting rod (19) is rotatably connected with the connecting seat (18) on one side of the limiting clamping block (6) through a pin shaft.

7. An oilfield wellhead and tubing spooling device for use with a Christmas tree as defined in claim 6, characterized in that: The upper side of the long connecting rod (19) is provided with a short connecting rod (20), one end of the short connecting rod (20) is rotatably connected with the connecting seat (18) on the outer ring surface of the supporting sleeve (13) through a pin shaft, and the other end of the short connecting rod (20) is rotatably connected with the connecting seat (18) on one side of the limiting clamping block (6) through a pin shaft.

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