Throttle manifold for preventing flow leakage of petroleum well

Abstract

The invention relates to the technical field of petroleum wells, in particular to a choke manifold for preventing flow leakage of a petroleum well, which comprises a first connecting pipe, a second connecting pipe slidably sleeved at one end of the first connecting pipe, a limiting component arranged between the first connecting pipe and the second connecting pipe, a limiting ring fixedly mounted in the first connecting pipe, and abutted against one end of an inserting pipe. The other end of the inserting pipe is fixedly connected with the second connecting pipe; the device has the beneficial effects that a drainage groove is formed in the inner ring face of the side, close to the limiting ring, of the first connecting pipe, a trapezoidal through hole is formed in the bottom of the drainage groove, an anti-leakage assembly is arranged at the bottom of the trapezoidal through hole and comprises an oil receiving box, flow guide blocks are fixedly connected to the two sides of the bottom of the oil receiving box, and a light floating plate is slidably installed between the two flow guide blocks; one side of the upper surface of the light floating plate is fixedly connected with a light insulating rod, the top of the light insulating rod is fixedly connected with a light arc-shaped conducting strip, conducting rods are arranged on the two sides of the top of one side of the light arc-shaped conducting strip, one end of one conducting rod is communicated with the positive electrode of the signal processing transmitter, and the other conducting rod is communicated with the positive electrode of the battery. And the signal processing transmitter is conducted with the negative electrode of the battery through a waterproof lead.

Description

Technical Field

[0001] The invention relates to the technical field of oil wells, in particular to a throttling manifold used for preventing leakage of oil wells. Background Art

[0002] In oil transportation, it is often carried out under high pressure, which puts higher requirements on the sealing of the pipeline, especially between the joints of two adjacent pipelines. In the prior art, they are often directly connected by internal and external threads, or connected by flanges, or connected by clamps. However, there is no leakage monitoring structure at the pipeline joint, which makes it impossible to monitor the leakage of the pipeline, posing certain safety hazards to the safe transportation of oil. In the prior art, in the transportation of oil, since oil is transported under high pressure, this inevitably requires the firmness of the pipe connection, in which the connecting hoop is threadedly connected to the oil pipe, and since no anti-leakage detection device is provided at the connection between the two pipes, when a leakage occurs, it is impossible to timely realize the fixed-point investigation and maintenance of the leakage, which affects the transportation of oil. Summary of the invention

[0001] The object of the present invention is to provide a throttling manifold for preventing leakage in oil wells, so as to solve the problems raised in the above-mentioned background technology.

[0002] To achieve the above object, the present invention provides the following technical solution: a throttling manifold for preventing leakage of oil wells, comprising: a first connecting pipe, a second connecting pipe is slidably sleeved on one end of the first connecting pipe, a limiting assembly is arranged between the first connecting pipe and the second connecting pipe, a limiting ring is fixedly installed in the first connecting pipe, the limiting ring abuts against one end of the plug-in pipe, and the other end of the plug-in pipe is fixedly connected to the second connecting pipe;

[0003] A drainage groove is provided on the inner ring surface of the first connecting pipe near the limit ring, and a trapezoidal through hole is provided at the bottom of the drainage groove. An anti-leakage component is arranged at the bottom of the trapezoidal through hole, and the anti-leakage component includes an oil receiving box, and guide blocks are fixedly connected to both sides of the bottom of the oil receiving box, and a lightweight floating plate is slidably installed between the two guide blocks, a lightweight insulating rod is fixedly connected to one side of the upper surface of the lightweight floating plate, and a lightweight arc-shaped conductive sheet is fixedly connected to the top of the lightweight insulating rod, and conductive rods are arranged on both sides of the top of one side of the lightweight arc-shaped conductive sheet, one end of one of the conductive rods is connected to the positive electrode of the signal processing transmitter, and the other conductive rod is connected to the positive electrode of the battery, and the signal processing transmitter is connected to the negative electrode of the battery through a waterproof wire.

[0004] Preferably, the limiting assembly comprises a sleeve, which is sleeved on the outer ring surface of one end of the first connecting tube and is slidably connected to the first connecting tube, and a pressure ring is fixedly connected to the inner ring surface of the sleeve.

[0005] Preferably, the pressure ring is fixedly connected to one end of the return spring, the other end of the return spring is fixedly connected to the protrusion on the outer ring surface of the first connecting tube, and a ball is provided on one side of the return spring.

[0006] Preferably, the ball is slidably engaged in a slot provided on the outer ring surface of the first connecting tube, the slots are arranged in a circular array about the outer ring surface of the first connecting tube, and a limiting slot is provided at a position corresponding to the second connecting tube and the ball.

[0007] Preferably, a groove is provided on the side where the limiting ring abuts against the plug-in tube, and a sealing ring is slidably inserted in the groove. One side of the sealing ring is fixedly connected with the plug-in tube, the plug-in tube sliding sleeve is arranged on the inner ring surface of the blocking block, the blocking block is fixedly installed in the first connecting pipe, and an oil drain groove is opened on the bottom surface of the blocking block.

[0008] Preferably, the top of the oil receiving box is fixedly connected to the bottom of the outer ring surface of the first connecting pipe, and the oil receiving box is communicated with the trapezoidal through hole.

[0009] Preferably, the bottom of the oil receiving box is fixedly connected to the sealing plate by bolts, and both sides of the upper surface of the sealing plate are fixedly connected to the guide block.

[0010] Preferably, a limit rod is arranged between the guide blocks, and the limit blocks are fixedly connected to the outer ring surfaces of the limit rods on both sides. The limit blocks are slidably connected to the slide groove opened in the middle of the lightweight floating plate. The signal processing transmitter and the upper side of the battery are both provided with a protective shell, and the protective shell is fixedly connected to the side wall of the oil collecting box.

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

[0012] 1. By setting the limiting assembly, the first connecting pipe and the second connecting pipe can be quickly connected and fixed coaxially, so as to improve the installation and removal efficiency of the first connecting pipe and the second connecting pipe in the subsequent repair process.

[0013] 2. During the oil transportation process, assuming that leakage occurs when the stop ring contacts the plug tube, no matter what time the leakage occurs, the leaked liquid will flow downward under its own gravity and the drainage of the drainage groove, and then flow into the oil receiving box through the trapezoidal through hole. The trapezoidal through hole, oil receiving box, lightweight floating plate, guide block, and drainage groove are all coated with oleophobic nano coatings to prevent oil from adhering to their surfaces. The symmetrically arranged guide blocks in the oil receiving box guide the oil, so that the leaked oil flows to the bottom of the lightweight floating plate through the gap between the guide blocks and the lightweight floating plate. At the same time, the lightweight The density of the floating plate is lower than that of oil. As the oil accumulates at the bottom of the lightweight floating plate, the lightweight floating plate will float up. The lightweight floating plate will then drive the lightweight arc-shaped conductive sheet to rise under the connection of the lightweight insulating rod, so that the lightweight arc-shaped conductive sheet is close to the conductive rod on its top, thereby improving the reliability of triggering the signal processing transmitter. At the same time, even if the leaked oil leaks slowly in a trace amount, it can be collected in the oil collecting box. As time goes by, when the lightweight floating plate floats to a sufficient height, the lightweight arc-shaped conductive sheet will abut against the bottom of one end of the two conductive rods, thereby realizing alarm monitoring of trace leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a bottom view schematic diagram of the internal structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0017] Figure 4 This is a top view of the internal structure of the present invention;

[0018] Figure 5 It is a side view schematic diagram of the internal structure of the present invention;

[0019] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure in the middle.

[0020] In the figure: 1. first connecting pipe; 2. second connecting pipe; 3. limit assembly; 4. limit ring; 5. plug-in pipe; 6. trapezoidal through hole; 7. anti-leakage assembly; 8. oil receiving box; 9. guide block; 10. light floating plate; 11. light insulating rod; 12. light arc-shaped conductive sheet; 13. conductive rod; 14. signal processing transmitter; 15. battery; 16. waterproof wire; 17. casing; 18. pressure ring; 19. reset spring; 20. Ball; 21. Slot; 22. Groove; 23. Sealing ring; 24. Blocking block; 25. Oil drain groove; 26. Sealing plate; 27. Limit rod; 28. Limit block; 29. ​​Slide groove; 30. Limit groove; 31. Drainage groove; 32. Protective shell. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 6 The present invention provides a technical solution: a throttling manifold for preventing leakage of oil wells, comprising: a first connecting pipe 1, a second connecting pipe 2 is slidably sleeved on one end of the first connecting pipe 1, a limiting assembly 3 is arranged between the first connecting pipe 1 and the second connecting pipe 2, a limiting ring 4 is fixedly installed in the first connecting pipe 1, the limiting ring 4 is abutted against one end of the plug-in pipe 5, and the plug-in pipe 5 The other end is fixedly connected to the second connecting pipe 2. A drainage groove 31 is provided on the inner ring surface of the first connecting pipe 1 near the limit ring 4. A trapezoidal through hole 6 is provided at the bottom of the drainage groove 31. An anti-leakage component 7 is arranged at the bottom of the trapezoidal through hole 6. The anti-leakage component 7 includes an oil receiving box 8. Guide blocks 9 are fixedly connected to both sides of the bottom of the oil receiving box 8. A lightweight floating plate 10 is slidably installed between the two guide blocks 9. A lightweight insulating rod 11 is fixedly connected to one side of the upper surface of the lightweight floating plate 10. A lightweight arc-shaped conductive sheet 12 is fixedly connected to the top of the lightweight insulating rod 11. Conductive rods 13 are arranged on both sides of the top of one side of the lightweight arc-shaped conductive sheet 12. One end of the conductive rod 13 is connected to the positive pole of the signal processing transmitter 14, and the other conductive rod 13 is connected to the positive pole of the battery 15. The signal processing transmitter 14 is connected to the negative pole of the battery 15 through a waterproof wire 16.

[0023] When in use, first plug the first connecting pipe 1 and the second connecting pipe 2 together, so that the plug-in pipe 5 of the second connecting pipe 2 abuts against the limit ring 4 fixedly installed in the first connecting pipe 1, and then the limit assembly 3 is used to limit the position, so as to realize the coaxial docking and fixation of the first connecting pipe 1 and the second connecting pipe 2. During the oil transportation process, assuming that leakage occurs due to the abutment between the limit ring 4 and the plug-in pipe 5, no matter at what time the leakage occurs, the leaked liquid will flow downward under its own gravity and the drainage action of the drainage groove 31, and thus flow into the oil receiving box 8 through the trapezoidal through hole 6. The surfaces of the trapezoidal through hole 6, the oil receiving box 8, the lightweight floating plate 10, the guide block 9, and the drainage groove 31 are all coated with an oleophobic nano coating, so as to prevent oil from adhering to their surfaces. The guide blocks 9 symmetrically arranged in the oil receiving box 8 guide the oil The oil flows through the gap between the guide block 9 and the light floating plate 10 and flows to the bottom of the light floating plate 10. Meanwhile, the density of the light floating plate 10 is less than the density of the oil. As the oil accumulates at the bottom of the light floating plate 10, the light floating plate 10 is lifted. The light floating plate 10 drives the light arc-shaped conductive sheet 12 to rise under the connection of the light insulating rod 11, so that the light arc-shaped conductive sheet 12 is close to the conductive rod 13 at the top thereof, thereby improving the triggering reliability of the signal processing transmitter 14. Meanwhile, even if the leaked oil leaks slowly in a trace amount, it can be collected in the oil receiving box 8. As time goes by, when the light floating plate 10 floats to a sufficient height, the light arc-shaped conductive sheet 12 abuts against the bottom of one end of the two conductive rods 13, thereby realizing the alarm monitoring of the trace leakage.

[0024] Embodiment 2: On the basis of embodiment 1, the limit assembly 3 includes a sleeve 17, which is sleeved on the outer ring surface of one end of the first connecting tube 1 and is slidably connected to the first connecting tube 1. A pressure ring 18 is fixedly connected to the inner ring surface of the sleeve 17. The sleeve 17 can slide on the outer ring surface of the first connecting tube 1, thereby driving the pressure ring 18 to move. The pressure ring 18 is fixedly connected to one end of a return spring 19, and the other end of the return spring 19 is fixedly connected to the convex part of the outer ring surface of the first connecting tube 1. A ball 20 is arranged on one side of the return spring 19. The pressure ring 18 is fixedly connected to the convex part of the outer ring surface of the first connecting tube 1 through the return spring 19. The ball 20 The ball 20 is slidably engaged in the groove 21 opened on the outer ring surface of the first connecting tube 1. The groove 21 is arranged in a circular array with respect to the outer ring surface of the first connecting tube 1. The second connecting tube 2 is provided with a limiting groove 30 at the corresponding position of the ball 20. The groove 21 and the limiting groove 30 are both slidably connected with the ball 20. A groove 22 is opened on the side where the limiting ring 4 abuts the plug-in tube 5. A sealing ring 23 is slidably inserted in the groove 22. One side of the sealing ring 23 is fixedly connected to the plug-in tube 5. The plug-in tube 5 is slidably sleeved on the inner ring surface of the blocking block 24. The blocking block 24 is fixedly installed in the first connecting tube 1, and an oil drain groove 25 is opened on the bottom surface of the blocking block 24.

[0025] By pushing the sleeve 17 in the direction away from the second connecting tube 2, the sleeve 17 drives the pressure ring 18 to move synchronously, and the return spring 19 is compressed under the limit of the pressure ring 18. At this time, the first connecting tube 1 is docked with the second connecting tube 2, so that the plug-in tube 5 of the second connecting tube 2 is inserted into the first connecting tube 1, and the sealing ring 23 of the plug-in tube 5 is inserted into the groove 22 provided by the limit ring 4. At the same time, the plug-in tube 5 abuts against the limit ring 4, so that the docking position is sealed. At the same time, when the second connecting tube 2 is sleeved with the first connecting tube 1, under the cooperation of the groove 21, the limit groove 30 and the ball 20, the ball 20 slides between the limit groove 30 and the groove 21, and then the sleeve 17 is released. Under the reverse elastic force of the return spring 19, the first connecting tube 1 is docked with the second connecting tube 2. Under the use, the pressure ring 18 is pushed to slide in the direction close to the second connecting pipe 2, and then the pressure ring 18 is moved to the top of the slot 21 to close the slot 21, so that the ball 20 is fixedly engaged between the limiting groove 30 and the slot 21, so as to realize the coaxial sealing docking and fixation of the first connecting pipe 1 and the second connecting pipe 2. When the first connecting pipe 1 and the second connecting pipe 2 need to be disassembled and separated due to leakage, it is only necessary to push the sleeve 17 again in the direction away from the second connecting pipe 2, so that the sleeve 17 drives the pressure ring 18 to slide, and the pressure ring 18 no longer limits the slot 21, and then through the cooperation of the slot 21, the limiting groove 30 and the ball 20, the second connecting pipe 2 can be pulled out of the first connecting pipe 1, so as to facilitate subsequent maintenance.

[0026] Embodiment 3: On the basis of embodiment 2, the top of the oil receiving box 8 is fixedly connected to the bottom of the outer ring surface of the first connecting pipe 1, and the oil receiving box 8 is communicated with the trapezoidal through hole 6. The oil receiving box 8 is fixedly installed at the bottom of the first connecting pipe 1 for receiving the leaked oil. By setting the trapezoidal through hole 6, the leaked oil can flow better. The drainage groove 31 is provided with a rounded corner to further facilitate the flow of oil. The bottom of the oil receiving box 8 is fixedly connected to the sealing plate 26 by bolts. Both sides of the upper surface of the sealing plate 26 are fixedly connected to the guide block 9. The bottom of the oil receiving box 8 is fixedly connected to the sealing plate 26 by bolts, so that it is convenient to recover and clean the leaked oil in the oil box 8 by disassembling the sealing plate 26. There is a The limit rod 27 has limit blocks 28 fixedly connected on both sides of the outer ring surface of the limit rod 27. The limit blocks 28 are slidably connected to the slide groove 29 opened in the middle of the lightweight floating plate 10. The signal processing transmitter 14 and the battery 15 are both provided with a protective shell 32 on the upper side, and the protective shell 32 is fixedly connected to the side wall of the oil receiving box 8. The limit rod 27 guides the lightweight floating plate 10 through the limit blocks 28 fixedly connected on both sides thereof. The surfaces of the limit rod 27 and the limit rod 27 are coated with an oleophobic nano coating. The signal processing transmitter 14 and the battery 15 are protected by the provided protective shell 32 to avoid damage thereto. At the same time, the protective shell 32 is in an inverted triangle shape, and its surface is also covered with an oleophobic nano coating to further avoid oil residue on its surface.

[0027] In the process of oil transportation, it is assumed that the contact between the stop ring 4 and the plug pipe 5 and the sealing ring 23 Leakage occurs at the connection with the groove 22. No matter what time the leakage occurs, the leaked liquid will flow downward under its own gravity and the drainage action of the drainage groove 31, and then flow into the oil receiving box 8 through the trapezoidal through hole 6. The symmetrically arranged guide blocks 9 and the protective shell 32 in the oil receiving box 8 guide the oil, so that the leaked oil flows to the gap between the guide blocks 9 and the light floating plate 10, until it flows to the bottom of the light floating plate 10, thereby improving the reliability of triggering the alarm. At the same time, even if the leaked oil leaks slowly in a trace amount, it can be collected in the oil receiving box 8. As time goes by, the oil accumulates at the bottom of the oil receiving box 8, and the oil level rises. Since the density of the light floating plate 10 is less than that of the oil, the light floating plate 10 rises under the sliding cooperation of the limit rod 27, the limit block 28 and the slide groove 29. One end of the conductive rod 13 is connected to the positive electrode of the signal processing transmitter 14, and the other conductive rod 13 is connected to the positive electrode of the battery 15. The signal processing transmitter 14 is connected to the negative electrode of the battery 15 through a waterproof wire 16, and the lightweight arc-shaped conductive sheet 12 is driven to rise under the connection of the lightweight insulating rod 11. As time goes by, when the lightweight floating plate 10 rises to a sufficient height, the lightweight arc-shaped conductive sheet 12 abuts against the bottom of one end of the two conductive rods 13, thereby realizing the conduction of the circuit, and in turn causing the signal processing transmitter 14 to send a leakage signal, which can realize alarm monitoring of trace leakage. The signal processing transmitter 14 is running and sends a signal to the external monitoring room in time, thereby realizing real-time anti-leakage work of throttling. In view of the fact that the communication connection between the signal processing transmitter 14 and the monitoring room are conventional technical means of those skilled in the art, they will not be repeated here. Those skilled in the art can clearly implement the technical solution of the present invention. At the same time, during repair, in order to facilitate subsequent use, the sealing plate 26 can be disassembled to clean the oil stored in the docking oil box 8, thereby facilitating subsequent processing.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A throttling manifold for preventing leakage in oil wells, comprising a first connecting pipe (1), characterized in that: A second connecting tube (2) is slidably sleeved on one end of the first connecting tube (1), a limiting assembly (3) is provided between the first connecting tube (1) and the second connecting tube (2), a limiting ring (4) is fixedly installed in the first connecting tube (1), the limiting ring (4) abuts against one end of the plug-in tube (5), and the other end of the plug-in tube (5) is fixedly connected to the second connecting tube (2); A drainage groove (31) is provided on the inner surface of the first connecting pipe (1) near the limiting ring (4), a trapezoidal through hole (6) is provided at the bottom of the drainage groove (31), a leakage prevention component (7) is provided at the bottom of the trapezoidal through hole (6), the leakage prevention component (7) comprises an oil receiving box (8), guide blocks (9) are fixedly connected to both sides of the bottom of the oil receiving box (8), a light floating plate (10) is slidably installed between the two guide blocks (9), and a light floating plate (10) is fixedly connected to one side of the upper surface of the light floating plate (10). A lightweight insulating rod (11) is provided, a lightweight arc-shaped conductive sheet (12) is fixedly connected to the top of the lightweight insulating rod (11), and conductive rods (13) are arranged on both sides of the top of one side of the lightweight arc-shaped conductive sheet (12), one end of one of the conductive rods (13) is connected to the positive electrode of the signal processing transmitter (14), and the other end of the conductive rod (13) is connected to the positive electrode of the battery (15), and the signal processing transmitter (14) is connected to the negative electrode of the battery (15) through a waterproof wire (16).

2. A throttling manifold for preventing leakage in oil wells according to claim 1, characterized in that: The limiting assembly (3) comprises a sleeve (17), which is sleeved on the outer ring surface of one end of the first connecting tube (1) and is slidably connected to the first connecting tube (1), and a pressure ring (18) is fixedly connected to the inner ring surface of the sleeve (17).

3. A throttling manifold for preventing leakage in oil wells according to claim 2, characterized in that: The pressure ring (18) is fixedly connected to one end of the return spring (19), and the other end of the return spring (19) is fixedly connected to the outer ring surface protrusion of the first connecting tube (1), and a ball (20) is arranged on one side of the return spring (19).

4. A throttling manifold for preventing leakage in oil wells according to claim 3, characterized in that: The balls (20) are slidably engaged in the slots (21) provided on the outer ring surface of the first connecting tube (1); the slots (21) are arranged in a circular array with respect to the outer ring surface of the first connecting tube (1); and the second connecting tube (2) is provided with limiting slots (30) at positions corresponding to the balls (20).

5. The throttling manifold for preventing leakage in oil wells according to claim 1, characterized in that: The limiting ring (4) is provided with a groove (22) on the side abutting against the plug-in tube (5), a sealing ring (23) is slidably inserted in the groove (22), one side of the sealing ring (23) is fixedly connected to the plug-in tube (5), the plug-in tube (5) is slidably sleeved on the inner ring surface of a blocking block (24), the blocking block (24) is fixedly installed in the first connecting tube (1), and an oil drain groove (25) is provided on the bottom surface of the blocking block (24).

6. The throttling manifold for preventing leakage in oil wells according to claim 1, characterized in that: The top of the oil receiving box (8) is fixedly connected to the bottom of the outer ring surface of the first connecting pipe (1), and the oil receiving box (8) is communicated with the trapezoidal through hole (6).

7. A throttling manifold for preventing leakage in oil wells according to claim 6, characterized in that: The bottom of the oil receiving box (8) is fixedly connected to the sealing plate (26) by means of bolts, and both sides of the upper surface of the sealing plate (26) are fixedly connected to the guide block (9).

8. The throttling manifold for preventing leakage in oil wells according to claim 7, characterized in that: A limit rod (27) is arranged between the guide blocks (9), and limit blocks (28) are fixedly connected to both sides of the outer ring surface of the limit rod (27), and the limit block (28) is slidably connected to a slide groove (29) provided in the middle of the light floating plate (10). A protective shell (32) is arranged on the upper side of the signal processing transmitter (14) and the battery (15), and the protective shell (32) is fixedly connected to the side wall of the oil receiving box (8).

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