Working barrel convenient for quick butt joint

Abstract

The utility model discloses a working barrel convenient for quick butt joint, which comprises a first working barrel, a first flange is welded and fixed at the end part of the first working barrel, a second working barrel is arranged on one side of the first working barrel, and a second flange is welded and fixed at one end of the second working barrel close to the first working barrel. The surfaces of the second flange and the first flange are uniformly provided with multiple groups of equidistant screw joint mounting holes, and the inner wall surface of the first working cylinder is fixedly provided with a butt joint cylinder. According to the working barrel facilitating rapid butt joint, by increasing the contact area and the stress area between the first working barrel and the second working barrel, the larger contact area is beneficial to forming tighter sealing, and the risk of oil and gas leakage is reduced; the contact area is increased, so that when the working barrel bears complex working conditions such as underground pressure, temperature change and mechanical vibration, loads can be distributed more evenly, local stress concentration is reduced, and the overall bearing capacity is improved.

Description

Technical Field

[0001] The utility model relates to the field of oilfield mining equipment, in particular to a working cylinder which is convenient for quick docking. Background Art

[0002] In oilfield production, the working barrel is an important downhole tool; the working barrel is usually a tubular structure made of high-strength metal materials; it mainly plays the following key roles: providing a location for installation and support of other downhole tools; for example, in layered production, different production distributors are installed through the working barrel to achieve control of the production of different oil layers; it helps to achieve pressure control and fluid separation, storage and other operations; in water injection operations, the working barrel can form a relatively sealed space to ensure accurate control of water injection pressure and injection volume; as a channel, it guides the flow direction of the fluid; ensures that oil and gas flow along the predetermined path, and improves production efficiency; the working barrel plays an important role in oilfield production, and through cooperation with other downhole tools, it can achieve effective control and optimization of oil well production;

[0003] The main method of docking between working barrels is threaded connection: matching threads are machined on both ends of the working barrel and then rotated and tightened to achieve docking; this method provides a tight connection. When using threaded connection, after docking, the small contact area means that sealing becomes more difficult, which can easily lead to oil and gas leakage; the smaller contact area will cause excessive local force, which can easily cause deformation and damage to the working barrel; in the high-pressure environment underground, cracks or even fractures may appear in the areas where the force is concentrated. Utility Model Content

[0004] The purpose of the present invention is to provide a working cylinder that is easy to quickly connect, so as to solve the problem mentioned in the above background technology that the smaller contact area will cause excessive local force, which may easily cause deformation and damage to the working cylinder; in the high-pressure environment underground, cracks or even fractures may appear in the parts where the force is concentrated.

[0005] In order to achieve the above-mentioned purpose, a working cylinder that is easy to quickly connect is provided, including a first working cylinder, a first flange is welded and fixed at the end of the first working cylinder, and a second working cylinder is installed on one side of the first working cylinder, and the second flange is welded and fixed at one end of the second working cylinder close to the first working cylinder, and a plurality of groups of equidistantly arranged screw mounting holes are evenly provided on the surfaces of the second flange and the first flange, a docking cylinder is fixedly installed on the inner wall surface of the first working cylinder, and a docking seat is welded and fixed at the end of the docking cylinder away from the first working cylinder, the second working cylinder includes a support seat, and a sealing gasket is installed on the upper side of the support seat, and the sealing gasket is fixedly installed on the inner upper side of the second working cylinder.

[0006] Preferably, the first working cylinder and the second working cylinder are fixedly connected via a first flange and a second flange, and the first flange and the second flange are sealed via an annular sealing sheet.

[0007] Preferably, the axial sections of the first working cylinder and the docking cylinder are concentric structures, and the docking cylinder is inserted into the interior of the second working cylinder. At the same time, the axial sections of the docking cylinder and the second working cylinder are concentric structures.

[0008] Preferably, a support groove is provided on the surface of the support seat, and the support groove is arranged in an annular shape. At the same time, the support groove is adapted to the size of the docking seat, and the docking seat is inserted into the inside of the support groove, and the docking seat is arranged in an annular shape.

[0009] Preferably, the first working cylinder and the second working cylinder are docked with each other through a docking cylinder, a docking seat, a supporting seat and a supporting groove, and the docking cylinder and the second working cylinder are sealed with a sealing gasket.

[0010] Preferably, the sealing gasket is clamped on the surface of the holder, and the holder is fixedly arranged on the upper side of the inner wall of the second working cylinder. At the same time, the sealing gasket is an annular structure made of rubber material, and the inner diameter of the sealing gasket is smaller than the outer diameter of the docking cylinder.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In the present invention, the sealing gasket deforms to increase the area covered on the surface of the docking cylinder, thereby improving the sealing performance between the first and second working cylinders after docking, forming an internal sealing structure between the first and second working cylinders. The first and second flanges, together with the sealing gasket, form an external sealing structure between the first and second working cylinders. The two sets of sealing structures operate simultaneously, thereby improving the sealing performance between the first and second working cylinders and preventing leakage at the connection.

[0013] 2. The utility model docks the first working cylinder and the second working cylinder through a docking cylinder, a docking seat, a support seat and a support groove; the contact area and the force-bearing area between the first working cylinder and the second working cylinder are increased, and the larger contact area helps to form a tighter seal and reduce the risk of oil and gas leakage; the increase in contact area enables the working cylinder to distribute the load more evenly when subjected to complex working conditions such as downhole pressure, temperature changes and mechanical vibrations, reduce local stress concentration, and thus improve the overall bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a bottom view of the structure of the utility model;

[0016] Figure 3 It is a rear view of the structure of the utility model;

[0017] Figure 4 for Figure 1 A in the figure shows the enlarged structural diagram;

[0018] Figure 5 Schematic diagram of the second working cylinder;

[0019] Figure 6 Schematic diagram of the first working cylinder.

[0020] Numbers in the figure: 1, first working cylinder; 11, docking cylinder; 12, docking seat; 2, second working cylinder; 21, support seat; 22, support groove; 23, clamping seat; 24, sealing gasket; 3, first flange; 4, sealing sheet; 5, second flange. DETAILED DESCRIPTION

[0021] See also Figure 1-6 The utility model provides a working cylinder that is convenient for quick docking, including a first working cylinder 1, characterized in that: the end of the first working cylinder 1 is welded and fixed with a first flange 3, and a second working cylinder 2 is installed on one side of the first working cylinder 1, and at the same time, the second working cylinder 2 is welded and fixed with a second flange 5 at one end close to the first working cylinder 1, and a plurality of groups of equidistantly arranged screw mounting holes are evenly opened on the surfaces of the second flange 5 and the first flange 3, a docking cylinder 11 is fixedly installed on the inner wall surface of the first working cylinder 1, and a docking seat 12 is welded and fixed to the end of the docking cylinder 11 away from the first working cylinder 1, the second working cylinder 2 includes a support seat 21, and a sealing gasket 24 is installed on the upper side of the support seat 21, and the sealing gasket 24 is fixedly installed on the inner upper side of the second working cylinder 2.

[0022] As a preferred embodiment, the first working cylinder 1 and the second working cylinder 2 are fixedly connected by a first flange 3 and a second flange 5, and the first flange 3 and the second flange 5 are sealed by an annular sealing sheet 4;

[0023] As a preferred embodiment, the first working cylinder 1 and the second working cylinder 2 are docked via a docking cylinder 11 , a docking seat 12 , a support seat 21 and a support groove 22 , and the docking cylinder 11 and the second working cylinder 2 are sealed via a sealing gasket 24 .

[0024] As can be seen from the above, when in use, the operator inserts the docking tube 11 fixed to the end of the first working tube 1 into the inner wall surface of the second working tube 2. When the docking tube 11 is inserted into the inside of the second working tube 2, the sealing gasket 24 is fixed and compressed, so that the sealing gasket 24 is deformed to increase the area covered on the surface of the docking tube 11, thereby improving the sealing performance of the docking between the first working tube 1 and the second working tube 2, and forming an internal sealing structure between the first working tube 1 and the second working tube 2; at the same time, when the docking seat 12 at the end of the docking tube 11 is inserted into the inside of the support groove 22, the docking between the first working tube 1 and the second working tube 2 is completed. At this time, multiple sets of bolts can be used to seal the first flange 3 and the second flange 5. The external sealing structure between the first working tube 1 and the second working tube 2 is formed between the first flange 3, the second flange 5 and the sealing gasket 24; the two sets of sealing structures work simultaneously, which can improve the sealing between the first working tube 1 and the second working tube 2, and the connection is not prone to leakage;

[0025] As a preferred embodiment, a support groove 22 is opened on the surface of the support seat 21, and the support groove 22 is arranged in an annular shape. At the same time, the support groove 22 is adapted to the size of the docking seat 12, and the docking seat 12 is inserted into the inside of the support groove 22, and the docking seat 12 is arranged in an annular shape.

[0026] As can be seen from the above, when in use, the first working cylinder 1 and the second working cylinder 2 are docked through the docking cylinder 11, the docking seat 12, the support seat 21 and the support groove 22; the contact area and the force area between the first working cylinder 1 and the second working cylinder 2 are increased, and the larger contact area helps to form a tighter seal and reduce the risk of oil and gas leakage; effectively prevent oil and gas from leaking from the connection under high pressure, ensuring that the environmental protection requirements and safety standards in the production process are met; the increase in contact area enables the working cylinder to distribute the load more evenly when subjected to complex working conditions such as downhole pressure, temperature changes and mechanical vibrations, reduce local stress concentration, and thus improve the overall bearing capacity.

[0027] As a preferred embodiment, the axial sections of the first working cylinder 1 and the docking cylinder 11 are concentric structures, and the docking cylinder 11 is inserted into the inside of the second working cylinder 2. At the same time, the axial sections of the docking cylinder 11 and the second working cylinder 2 are concentric structures.

[0028] As a preferred embodiment, the sealing gasket 24 is clamped on the surface of the holder 23, and the holder 23 is fixedly set on the upper side of the inner wall of the second working cylinder 2. At the same time, the sealing gasket 24 is an annular structure made of rubber material, and the inner diameter of the sealing gasket 24 is smaller than the outer diameter of the docking cylinder 11.

[0029] Working principle: When the operator is in use, the docking tube 11 fixed to the end of the first working tube 1 is inserted into the inner wall surface of the second working tube 2. When the docking tube 11 is inserted into the inside of the second working tube 2, the sealing gasket 24 is fixed and compressed, so that the sealing gasket 24 is deformed to increase the area covered on the surface of the docking tube 11, thereby improving the sealing performance of the docking between the first working tube 1 and the second working tube 2, and forming an internal sealing structure between the first working tube 1 and the second working tube 2; at the same time, when the docking seat 12 at the end of the docking tube 11 is inserted into the inside of the supporting groove 22, the docking work between the first working tube 1 and the second working tube 2 is completed. At this time, multiple sets of bolts can be used to seal the first flange 3 and the second flange 5, and a first flange 3, the second flange 5 and the sealing gasket 24 are formed. External sealing structure between the working cylinder 1 and the second working cylinder 2; the two sets of sealing structures work simultaneously, which can improve the sealing between the first working cylinder 1 and the second working cylinder 2, and the connection is less likely to leak; the first working cylinder 1 and the second working cylinder 2 are docked through the docking cylinder 11, the docking seat 12, the support seat 21 and the support groove 22; the contact area and the force area between the first working cylinder 1 and the second working cylinder 2 are increased, and the larger contact area helps to form a tighter seal and reduce the risk of oil and gas leakage; effectively prevent oil and gas from leaking from the connection under high pressure, ensuring that environmental protection requirements and safety standards in the production process are met; the increase in contact area enables the working cylinder to distribute the load more evenly when subjected to complex working conditions such as downhole pressure, temperature changes and mechanical vibrations, reduce local stress concentration, and thus improve the overall bearing capacity.

Claims

1. A working cylinder that facilitates quick docking, comprising a first working cylinder (1), characterized in that: The end of the first working cylinder (1) is welded and fixed with a first flange (3), and a second working cylinder (2) is installed on one side of the first working cylinder (1), and at the same time, a second flange (5) is welded and fixed to the end of the second working cylinder (2) close to the first working cylinder (1), and a plurality of groups of equidistantly arranged screw mounting holes are evenly opened on the surface of the second flange (5) and the first flange (3), a docking cylinder (11) is fixedly installed on the inner wall surface of the first working cylinder (1), and a docking seat (12) is welded and fixed to the end of the docking cylinder (11) away from the first working cylinder (1), the second working cylinder (2) includes a support seat (21), and a sealing gasket (24) is installed on the upper side of the support seat (21), and the sealing gasket (24) is fixedly installed on the inner upper side of the second working cylinder (2).

2. The quick-connection mandrel according to claim 1, characterized in that: The first working cylinder (1) and the second working cylinder (2) are fixedly connected via a first flange (3) and a second flange (5), and the first flange (3) and the second flange (5) are sealed via an annular sealing sheet (4).

3. The quick-connection mandrel according to claim 1, characterized in that: The axial cross-sections of the first working cylinder (1) and the docking cylinder (11) are concentric structures, and the docking cylinder (11) is inserted into the interior of the second working cylinder (2). At the same time, the axial cross-sections of the docking cylinder (11) and the second working cylinder (2) are concentric structures.

4. The quick-connection mandrel according to claim 3, characterized in that: The support seat (21) has a support groove (22) on its surface, and the support groove (22) is annularly arranged. The support groove (22) is adapted to the size of the docking seat (12), and the docking seat (12) is inserted into the support groove (22). The docking seat (12) is annularly arranged.

5. The quick-connection mandrel according to claim 1, characterized in that: The first working cylinder (1) and the second working cylinder (2) are docked via a docking cylinder (11), a docking seat (12), a support seat (21) and a support groove (22), and the docking cylinder (11) and the second working cylinder (2) are sealed via a sealing gasket (24).

6. The quick-connection mandrel according to claim 1, characterized in that: The sealing gasket (24) is clamped on the surface of the clamping seat (23), and the clamping seat (23) is fixedly arranged on the upper side of the inner wall of the second working cylinder (2). At the same time, the sealing gasket (24) is an annular structure made of rubber material, and the inner diameter of the sealing gasket (24) is smaller than the outer diameter of the docking cylinder (11).

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