A throttling manifold for preventing leakage in oil wells

Abstract

The present invention relates to the technical field of oil wells, and discloses a throttling manifold for preventing oil well leakage, comprising: a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe being fixed after being plugged in; a leakage detection unit, the leakage detection unit comprising a detection ring, the detection ring being arranged at the plugging position of the first connecting pipe and the second connecting pipe, a plurality of leakage detection parts being evenly arranged on the detection ring, a signal transmitter being arranged in the leakage detection part, and when the leakage detection part detects oil leakage, the signal transmitter is started to transmit an alarm signal. The present invention arranges a plurality of leakage detection parts in the circumferential direction of the detection ring, and can quickly locate the leakage point according to the specific position of the leakage detection part transmitting the signal on the detection ring, so that the staff can inspect and repair the leakage point, reduce the workload of the staff in the leakage detection and maintenance process, and improve the effect of preventing leakage of the throttling manifold.

Description

Technical Field

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

[0002] The oil well throttling manifold is a crucial equipment in the process of oil drilling and oil and gas production. It is mainly used to control well kicks, blowouts and implement oil and gas well pressure control technology. Oil is usually transported under high pressure. This characteristic puts forward more stringent standards for the sealing performance of the pipeline system, especially at the interface between pipelines. In the existing technology, pipeline connections are mostly made by direct docking of internal and external threads, flange connection, and clamp fastening. However, a significant problem is that these connection points generally lack a leakage detection mechanism, and it is impossible to detect the leakage at the interface in real time, which increases the uncertainty of safe oil transportation and poses potential safety risks.

[0003] In the prior art, for example, the invention patent with application number CN202310269730.0 discloses a throttling manifold for preventing leakage in oil wells, which includes a connecting pipe 1, a connecting pipe 2 and an alarm assembly arranged at the connection between the connecting pipe 1 and the connecting pipe 2. An annular groove is coaxially provided on the inner circumferential surface of the connecting pipe 1, and a clamping ring is detachably provided in the annular groove. The clamping ring is composed of an elastic steel ring and a sponge. A circular docking port penetrating the connecting pipe 1 is provided at the bottom of the annular groove. The docking port is connected to the alarm assembly and the leaked liquid is introduced into the alarm assembly by the docking port. According to the present invention, no matter what time direction the leakage occurs, it will eventually be absorbed by the sponge. The leaked liquid can be directed to flow and gather at the bottom of the sponge, thereby improving the reliability of alarm triggering. Even if the leaked liquid leaks slowly in a trace amount, it can be captured and absorbed by the sponge to trigger an alarm, thereby realizing alarm monitoring of trace leakage.

[0004] However, in actual use, when the liquid leakage rate is small, the liquid accumulates in the sponge and cannot flow quickly to the bottom of the sponge, and the alarm cannot be triggered immediately; and even if the alarm is triggered, the staff still needs to check for leaks in various areas of the interface position, and the leakage point cannot be quickly determined.

[0005] Therefore, it is necessary to propose a throttling manifold for preventing leakage of oil wells, so as to at least partially solve the problems existing in the prior art. Summary of the invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0007] In order to at least partially solve the above problems, the present invention provides a throttling manifold for preventing leakage of oil wells, comprising:

[0008] A first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are fixed after being plugged in;

[0009] The leakage detection unit includes a detection ring, which is arranged at the joint of the first connecting pipe and the second connecting pipe. A plurality of leakage detection parts are evenly arranged on the detection ring. A signal transmitter is arranged in the leakage detection part. When the leakage detection part detects oil leakage, the signal transmitter is started to transmit an alarm signal.

[0010] Preferably, flanges are provided at the ends of the first connecting pipe and the second connecting pipe, and the flanges of the first connecting pipe and the second connecting pipe are fastened and connected by bolts.

[0011] Preferably, a mounting groove is provided at the end of the first connecting pipe, and a boss is provided at the end of the second connecting pipe, and the boss is inserted into the mounting groove.

[0012] Preferably, the depth of the mounting groove is greater than the height of the boss, and a sealing ring is connected between the mounting groove and the boss.

[0013] Preferably, an oil suction ring is provided at the end of the boss, and one side of the oil suction ring is tightly fitted with the sealing ring; a detection ring is connected to the side wall of the mounting groove, and the inner wall of the detection ring is tightly fitted with the outer wall of the oil suction ring.

[0014] Preferably, a receiving groove is provided on the inner side of the detection ring, a support ring is provided in the receiving groove along the annular direction, a rubber sealing ring is provided on the part of the receiving groove located on the inner side of the support ring, a plurality of leakage detection parts are connected to the support ring and are evenly arranged along the circumferential direction, and the detection end of the leakage detection part passes through the rubber sealing ring and contacts the oil suction ring.

[0015] Preferably, the leakage detection element comprises:

[0016] A detection tube, the middle part of which is connected to the support ring, one end of which passes through the rubber sealing ring and extends to the oil suction ring, and the other end of which extends to the outer wall of the detection ring and is bent;

[0017] An oil suction column is connected to the inner wall of the detection tube, one end of the oil suction column extends out of the detection tube mouth and contacts the oil suction ring, the oil suction column is arranged along the inner wall of the detection tube, and the other end passes through the bending part of the detection tube.

[0018] Preferably, one end of the detection tube close to the outer wall of the detection ring is connected to the detection block, and a detection groove is provided at the end of the detection block connected to the detection tube. A piston plate is slidably connected in the detection groove, a reset spring is connected between the piston plate and the detection groove, and electrical contacts are provided on the side opposite to the piston plate and the detection groove. When the electrical contacts on the piston plate contact the electrical contacts on the detection groove, the signal transmitter is energized and emits an alarm signal. The signal generator is arranged in the detection block.

[0019] Preferably, an oil blocking assembly is provided in the detection tube, and the oil blocking assembly comprises:

[0020] A through groove is provided through one side of the detection tube, an elastic oil-blocking film is provided on the inner wall of the detection tube, and the elastic oil-blocking film seals the inner side of the through groove;

[0021] The oil-blocking shrapnel has a tendency to bend toward one side of the oil suction column. One end of the oil-blocking shrapnel is connected to the elastic oil-blocking film, and the other end abuts against the other side of the inner wall of the detection tube under its own elastic action. A plurality of V-shaped openings are provided on the side of the oil-blocking shrapnel close to the oil suction column.

[0022] Preferably, the oil retaining assembly further comprises:

[0023] An adjusting block is hinged in the through slot, one side of the adjusting block is in contact with the oil retaining film and connected with the oil retaining shrapnel, and the other side of the adjusting block is provided with a wedge-shaped surface;

[0024] The adjusting sleeve is slidably arranged on the surface of the detection tube, and an adjusting groove is arranged on the inner wall of the adjusting sleeve. The adjusting groove includes a plane section and an inclined section. The inclined section is arranged close to the oil suction column, and the width of the plane section is greater than the width of the inclined section.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] The present invention provides a throttling manifold for preventing leakage in oil wells. A plurality of leakage detection parts are arranged in the circumferential direction of a detection ring. The leakage detection parts are evenly distributed on the detection ring. When oil leakage occurs at any position of the plug-in connection, the leakage detection parts here can quickly detect the oil, transmit a signal to a control room or a mobile terminal through a signal transmitter, alarm the leakage situation, and quickly locate the leakage point according to the specific position of the leakage detection part that transmits the signal on the detection ring. The staff can inspect and repair the leakage point, thereby reducing the workload of the staff in the leakage detection and maintenance process and improving the leakage prevention effect of the throttling manifold.

[0027] The throttling manifold for preventing leakage in oil wells described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 is a schematic diagram of the cross-sectional structure of the first connecting pipe and the second connecting pipe in the present invention;

[0030] Figure 2 It is a schematic diagram of the assembly structure of the first connecting pipe and the second connecting pipe in the present invention;

[0031] Figure 3 This is a schematic diagram of the installation structure of the detection ring in the present invention;

[0032] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the detection ring where the leakage detection member is installed in the present invention;

[0033] Figure 5 It is a layout diagram of the leakage detection member on the support ring in the present invention;

[0034] Figure 6 It is a schematic diagram of the partial structure of the support ring in the present invention;

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure of the leakage detection component in the present invention;

[0036] Figure 8 It is a partial cross-sectional structural schematic diagram of the oil retaining assembly in the present invention (initial state);

[0037] Fig. 9 It is a schematic diagram of the partial cross-sectional structure of the oil retaining assembly in the present invention (after adjustment).

[0038] In the figure: 1. first connecting pipe; 2. second connecting pipe; 3. detection ring; 4. leakage detection member; 5. flange; 6. mounting groove; 7. boss; 8. sealing ring; 9. oil suction ring; 11. receiving groove; 12. support ring; 13. rubber sealing ring; 21. detection tube; 22. oil suction column; 23. detection block; 24. detection groove; 25. piston plate; 26. reset spring; 27. electrical contact; 31. through groove; 32. elastic oil retaining film; 33. oil retaining spring; 34. adjustment block; 35. adjustment sleeve; 36. adjustment groove. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0040] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0041] Embodiment 1:

[0042] like Figure 1-6 As shown, the present invention provides a throttling manifold for preventing leakage in oil wells, comprising:

[0043] A first connecting pipe 1 and a second connecting pipe 2, the first connecting pipe 1 and the second connecting pipe 2 are fixed after being plugged in;

[0044] The leakage detection unit includes a detection ring 3, which is arranged at the joint of the first connecting pipe 1 and the second connecting pipe 2. A plurality of leakage detection parts 4 are evenly arranged on the detection ring 3. A signal transmitter is arranged in the leakage detection part 4. When the leakage detection part 4 detects oil leakage, the signal transmitter is started to transmit an alarm signal.

[0045] The working principle and beneficial effects of the above technical solution are:

[0046] The present invention provides a throttling manifold for preventing leakage of oil wells. During installation, a first connecting pipe 1 and a second connecting pipe 2 are aligned and plugged together and fixed by bolts. A detection ring 3 is arranged at the plugging position, and the detection ring 3 is arranged concentrically with the first connecting pipe 1 and the second connecting pipe 2. A plurality of leakage detection parts 4 are arranged in the circumferential direction of the detection ring 3, and the leakage detection parts 4 are evenly distributed on the detection ring 3. When oil leakage occurs at any position of the plugging position, the leakage detection parts 4 here can quickly detect the oil. A signal transmitter is arranged on the leakage detection part 4, and a signal is transmitted to a control room or a mobile terminal through the signal transmitter to alarm the leakage situation. The leakage point can be quickly located according to the specific position of the leakage detection part 4 that transmits the signal on the detection ring 3, and the staff can inspect and repair the leakage point, thereby reducing the workload of the staff in the leakage detection and maintenance process and improving the leakage prevention effect of the throttling manifold.

[0047] Embodiment 2:

[0048] like Figure 1-3 As shown, on the basis of the above-mentioned embodiment 1, flanges 5 are provided at the ends of the first connecting pipe 1 and the second connecting pipe 2, and the flanges 5 of the first connecting pipe 1 and the second connecting pipe 2 are fastened and connected by bolts.

[0049] A mounting groove 6 is disposed at the end of the first connecting pipe 1 , and a boss 7 is disposed at the end of the second connecting pipe 2 . The boss 7 is inserted into the mounting groove 6 .

[0050] The working principle and beneficial effects of the above technical solution are:

[0051] When the first connecting pipe 1 and the second connecting pipe 2 are plugged in, the boss 7 of the second connecting pipe 2 is aligned with the mounting groove 6 of the first connecting pipe 1, and the boss 7 is inserted into the mounting groove 6; the flanges 5 of the first connecting pipe 1 and the second connecting pipe 2 are also aligned, and after the mounting ports on the flanges 5 are aligned, the two are fastened together by bolts. The installation method is simple and easy to assemble and disassemble.

[0052] Embodiment 3:

[0053] like Figure 1-3 As shown, on the basis of the above-mentioned embodiment 2, the depth of the mounting groove 6 is greater than the height of the boss 7 , and a sealing ring 8 is connected between the mounting groove 6 and the boss 7 .

[0054] The working principle and beneficial effects of the above technical solution are:

[0055] The depth of the mounting groove 6 is set to be greater than the depth of the boss 7, so that there is a gap between the end of the mounting groove 6 and the end of the boss 7, and the sealing ring 8 is installed at the end of the mounting groove 6 to seal the gap; the thickness of the sealing ring 8 is slightly greater than the depth of the gap. After the first connecting tube 1 and the second connecting tube 2 are installed, the boss 7 can be crimped onto the sealing ring 8, so that the sealing ring 8 is compressed and deformed, and is tightly connected between the mounting groove 6 and the boss 7, thereby improving the sealing effect.

[0056] Embodiment 4:

[0057] like Figure 1-3 As shown, on the basis of the above-mentioned embodiment 3, an oil suction ring 9 is provided at the end of the boss 7, and one side of the oil suction ring 9 is tightly fitted with the sealing ring 8; the side wall of the mounting groove 6 is connected to the detection ring 3, and the inner wall of the detection ring 3 is tightly fitted with the outer wall of the oil suction ring 9.

[0058] The working principle and beneficial effects of the above technical solution are:

[0059] After the first connecting pipe 1 and the second connecting pipe 2 are installed, when oil leakage occurs, the leaked oil will flow out through the plug-in gap between the first connecting pipe 1 and the second connecting pipe 2, specifically, it flows from the edge of the sealing ring 8 to the gap between the installation groove 6 and the boss 7, and then flows to the gap between the ends of the first connecting pipe 1 and the second connecting pipe 2 and then flows out. An oil suction ring 9 is set on the boss 7, and the oil suction ring 9 is fitted with the side of the sealing ring 8. When oil leaks, the oil suction ring 9 absorbs the leaked oil, so that the amount of oil on the oil suction ring 9 at the current position increases; the oil suction ring 9 is made of materials such as sponge; the oil suction ring 9 is connected to the detection ring 3, and the oil amount at each position on the oil suction ring 9 is detected by the detection ring 9, so that the oil leakage at each position can be detected.

[0060] Embodiment 5:

[0061] like Figure 4-6As shown, on the basis of the above-mentioned embodiment 4, a receiving groove 11 is provided on the inner side of the detection ring 3, a support ring 12 is provided in the receiving groove 11 along the annular direction, a rubber sealing ring 13 is provided on the part of the receiving groove 11 located on the inner side of the support ring 12, a plurality of leakage detection members 4 are connected to the support ring 12 and are evenly arranged along the circumferential direction, and the detection end of the leakage detection member 4 passes through the rubber sealing ring 13 and contacts the oil suction ring 9.

[0062] The working principle and beneficial effects of the above technical solution are:

[0063] A support ring 12 is arranged in the middle of the detection ring 3, and a plurality of leakage detection parts 4 are fixed by the support ring 12. After the leakage detection part 4 is installed, its detection end can contact with the oil suction ring 9, and the contact points are evenly distributed along the circumferential direction of the oil suction ring 9; a rubber sealing ring 13 is arranged on the inner side of the accommodating groove 11 to seal the outer side of the oil suction ring 9, so that the leaked oil can only flow into the interior through the detection end of the leakage detection part 4, thereby ensuring the accuracy of the detection process; and the alarm end of the leakage detection part 4 is located on the side of the accommodating groove 11 away from the oil suction ring 9, that is, the alarm end is in an independent space to avoid contamination by the leaked oil, and an inspection port is arranged on the outer wall of the detection ring 3 to facilitate the inspection of the electronic components in the leakage detection part 4.

[0064] Embodiment 6:

[0065] like Figure 7 As shown, based on the above-mentioned embodiment 5, the leakage detection member 4 includes:

[0066] A detection tube 21, the middle part of the detection tube 21 is connected to the support ring 12, one end of the detection tube 21 passes through the rubber sealing ring 13 and extends to the oil suction ring 9, and the other end of the detection tube 21 extends to the outer wall of the detection ring 3 and is bent;

[0067] The oil suction column 22 is connected to the inner wall of the detection tube 21 , one end of the oil suction column 22 extends out of the tube mouth of the detection tube 21 and contacts the oil suction ring 9 , the oil suction column 22 is arranged along the inner wall of the detection tube 21 , and the other end passes through the bend of the detection tube 21 .

[0068] One end of the detection tube 21 close to the outer wall of the detection ring 3 is connected to the detection block 23, and a detection groove 24 is provided at the end of the detection block 23 connected to the detection tube 21. A piston plate 25 is slidably connected in the detection groove 24, and a reset spring 26 is connected between the piston plate 25 and the detection groove 24. Electric contacts 27 are provided on the side opposite to the detection groove 24 of the piston plate 25. When the electric contact 27 on the piston plate 25 contacts the electric contact 27 on the detection groove 24, the signal transmitter is energized and emits an alarm signal. The signal generator is arranged in the detection block 23.

[0069] The working principle and beneficial effects of the above technical solution are:

[0070] When the leakage detection part 4 is in use, the detection tube 21 is installed on the support ring 12, and the oil suction column 22 extends out of the pipe mouth of the detection tube 21 and contacts the oil suction ring 9, so that the oil leaked at this position can overflow into the oil suction column 22 and enter the detection tube 21 through the oil suction column 22; the detection tube 21 is bent and set, so that the leaked oil is not easy to produce backflow after flowing into the middle part of the detection tube 21; the leaked oil passes through the detection tube 21 and enters the detection block 23 at the other end. After the oil overflows into the detection groove 24, it pushes the piston plate 25 in the detection groove 24 to slide, so that the piston plate 25 is close to the bottom of the detection groove 24. When the piston plate 25 contacts the electrical contact 27 on the detection groove 24, the signal generator is energized and a signal is transmitted to the control room or mobile terminal to alarm.

[0071] Through the above structural design, the detection tube 21 is used as the main component of the leakage detection part 4. The detection tube 21 provides an overflow path for the leaked oil, guides the oil through the oil suction column 22, and reduces the reflux of the overflowed oil; when the overflow exceeds the preset value, the signal generator is automatically connected and a signal is emitted to alarm the overflow state at the current position. Multiple leakage detection parts 4 are evenly arranged in the circumferential direction of the detection ring 3. Compared with the method of a single leakage detection part 4, when oil leaks at any point, there is no need to wait for the oil to flow to the bottom or a single position of the leakage detection part 4 for detection. When sufficient leakage occurs at the current position, detection can be achieved. It has efficient and accurate detection effect, can locate the leakage point faster and more directly, and the throttling manifold has a better anti-leakage effect.

[0072] Embodiment 7:

[0073] like Figure 7-9 As shown, based on the above-mentioned embodiment 6, an oil blocking component is provided in the detection tube 21, and the oil blocking component includes:

[0074] A through groove 31, which is provided through one side of the detection tube 21, and an elastic oil-blocking film 32 is provided on the inner wall of the detection tube 21, and the elastic oil-blocking film 32 seals the inner side of the through groove 31;

[0075] The oil-blocking spring piece 33 has a tendency to bend toward one side of the oil suction column 22. One end of the oil-blocking spring piece 33 is connected to the elastic oil-blocking membrane 32, and the other end abuts against the other side of the inner wall of the detection tube 21 under its own elastic action. A plurality of V-shaped openings are provided on one side of the oil-blocking spring piece 33 close to the oil suction column 22.

[0076] The working principle and beneficial effects of the above technical solution are:

[0077] An oil blocking assembly is arranged in the detection tube 21. When in use, the leaked oil enters the middle part of the detection tube 21 under the guidance of the oil suction column 22 and is blocked by the oil blocking spring piece 33. As the amount of oil leakage increases, when the leakage exceeds the preset value, the oil pressure in the middle part of the detection tube 21 increases, squeezing the oil blocking spring piece 33 to deform it, and the end of the oil blocking spring piece 33 is separated from the inner wall of the detection tube 21, so that the detection tube 21 is connected with the detection groove 24, and the leaked oil can enter the detection groove 24, thereby realizing the function of leakage detection; a plurality of V-shaped openings are arranged on the oil blocking spring piece 3, so as to reserve sufficient deformation space for the deformation of the oil blocking spring piece 3; the elastic oil blocking film 32 can block the flow of oil to the through groove 31.

[0078] Through the above-mentioned structural design, a small amount of oil leakage is blocked; when the leaked oil flows out through the oil suction ring 9 and the oil suction column 22, the oil blocking spring piece 3 can play a secondary sealing role on the throttling manifold, further improve the sealing of the connection, and delay the leakage process of the throttling manifold; in the detection process, the flow rate of oil at the leakage position is the largest, part of the oil flows along the oil suction ring 9, and part of the oil enters the detection tube 21 for leakage detection; through the setting of the oil blocking spring piece 3, the detection tube 21 at the non-leakage position will not send a signal alarm when the oil enters its interior but does not reach the preset amount, thereby avoiding the situation where a false alarm occurs at the non-leakage position when there are multiple leakage detection parts 4.

[0079] Embodiment 8:

[0080] like Figure 7-9 As shown, based on the above embodiment 7, the oil retaining assembly further includes:

[0081] An adjusting block 34 is hinged in the through slot 31, one side of the adjusting block 34 is attached to the oil retaining film 32 and connected to the oil retaining spring piece 33, and the other side of the adjusting block 34 is provided with a wedge-shaped surface;

[0082] The adjusting sleeve 35 is slidably arranged on the surface of the detection tube 21. The inner wall of the adjusting sleeve 35 is provided with an adjusting groove 36. The adjusting groove 36 includes a plane section and an inclined section. The inclined section is arranged close to the oil suction column 22, and the width of the plane section is greater than the width of the inclined section.

[0083] The working principle and beneficial effects of the above technical solution are:

[0084] When the oil-blocking assembly is in use, the adjustment sleeve 35 is slidably arranged on the outer wall of the adjustment block 34. After the position is adjusted, the adjustment sleeve 35 is fixed to the adjustment block 34 under the action of friction, and the friction is much greater than the pressure of the oil leakage. In the initial state, the inclined surface of the adjustment block 34 abuts against the inclined surface section of the adjustment groove 36, the side of the adjustment block 34 is flush with the inner wall of the detection tube 21, and the oil-blocking spring piece 33 is in a relatively curved state. At this time, the pressure on both ends of the oil-blocking spring piece 33 is relatively large, and the oil-blocking spring piece 33 is not easy to deform, that is, the oil pressure required to drive the oil-blocking spring piece 33 to separate from the detection tube 21 is greater, and the amount of oil leakage that can be blocked is greater. The adjusting sleeve 35 is moved along the adjusting block 34 toward the oil suction column 22, and the adjusting groove 36 on the adjusting sleeve 35 is moved toward the oil suction column 22 accordingly. The adjusting block 34 is rotated outwardly under the elastic force of the oil baffle spring piece 33, so that the distance between the two ends of the oil baffle spring piece 33 is increased, and the pressure received is reduced, so that the oil baffle spring piece 33 is more likely to deform, that is, the oil pressure required to drive the oil baffle spring piece 33 to separate from the detection tube 21 is smaller, and the amount of oil leakage that can be blocked is smaller.

[0085] Through the above-mentioned structural design, by changing the position of the adjustment sleeve 35 on the adjustment block 34, the initial elastic force of the oil baffle spring piece 33 can be adjusted, and the oil pressure required for the deformation of the oil baffle spring piece 33 can be adjusted, thereby adjusting the oil leakage amount at the non-leakage position allowed when the leakage detection component 4 is adjusted, thereby realizing rapid adjustment of the detection sensitivity of the leakage detection component 4.

[0086] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0087] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A throttling manifold for preventing leakage in oil wells, characterized in that: include: A first connecting pipe (1) and a second connecting pipe (2), the first connecting pipe (1) and the second connecting pipe (2) are fixed after being plugged in; A leakage detection unit, the leakage detection unit comprising a detection ring (3), the detection ring (3) being arranged at the plug-in position of the first connecting pipe (1) and the second connecting pipe (2), a plurality of leakage detection components (4) being evenly arranged on the detection ring (3), a signal transmitter being arranged in the leakage detection component (4), and when the leakage detection component (4) detects oil leakage, the signal transmitter is activated to transmit an alarm signal; The end of the first connecting tube (1) is provided with a mounting groove (6), and the end of the second connecting tube (2) is provided with a boss (7), and the boss (7) is inserted into the mounting groove (6); An oil suction ring (9) is provided at the end of the boss (7), and one side of the oil suction ring (9) is tightly fitted with the sealing ring (8); a detection ring (3) is connected to the side wall of the mounting groove (6), and the inner wall of the detection ring (3) is tightly fitted with the outer wall of the oil suction ring (9); A receiving groove (11) is provided inside the detection ring (3), a support ring (12) is provided in the receiving groove (11) along the circumferential direction, a rubber sealing ring (13) is provided at the portion of the receiving groove (11) located inside the support ring (12), a plurality of leakage detection members (4) are connected to the support ring (12) and are evenly arranged in the circumferential direction, and a detection end of the leakage detection member (4) passes through the rubber sealing ring (13) and contacts the oil suction ring (9).

2. A throttling manifold for preventing leakage in oil wells according to claim 1, characterized in that: The ends of the first connecting pipe (1) and the second connecting pipe (2) are both provided with flanges (5), and the flanges (5) of the first connecting pipe (1) and the second connecting pipe (2) are fastened and connected by bolts.

3. The throttling manifold for preventing leakage in oil wells according to claim 1, characterized in that: The depth of the mounting groove (6) is greater than the height of the boss (7), and a sealing ring (8) is connected between the mounting groove (6) and the boss (7).

4. A throttling manifold for preventing leakage in oil wells according to claim 1, characterized in that: The leakage detection component (4) comprises: A detection tube (21), wherein the middle portion of the detection tube (21) is connected to the support ring (12), one end of the detection tube (21) passes through the rubber sealing ring (13) and extends toward the oil suction ring (9), and the other end of the detection tube (21) extends toward the outer wall of the detection ring (3) and is bent; An oil suction column (22) is connected to the inner wall of the detection tube (21), one end of the oil suction column (22) extends out of the tube mouth of the detection tube (21) and contacts the oil suction ring (9), the oil suction column (22) is arranged along the inner wall of the detection tube (21), and the other end passes through the bend of the detection tube (21).

5. A throttling manifold for preventing leakage in oil wells according to claim 4, characterized in that: One end of the detection tube (21) close to the outer wall of the detection ring (3) is connected to the detection block (23); one end of the detection block (23) connected to the detection tube (21) is provided with a detection groove (24); a piston plate (25) is slidably connected in the detection groove (24); a return spring (26) is connected between the piston plate (25) and the detection groove (24); and an electric contact (27) is provided on the side of the piston plate (25) opposite to the detection groove (24); when the electric contact (27) on the piston plate (25) contacts the electric contact (27) on the detection groove (24), the signal transmitter is energized and transmits an alarm signal; the signal generator is arranged in the detection block (23).

6. A throttling manifold for preventing leakage in oil wells according to claim 5, characterized in that: An oil blocking component is arranged in the detection tube (21), and the oil blocking component comprises: A through groove (31), the through groove (31) is provided through one side of the detection tube (21), an elastic oil-blocking film (32) is provided on the inner wall of the detection tube (21), and the elastic oil-blocking film (32) seals the inner side of the through groove (31); The oil-blocking spring piece (33) has a tendency to bend toward one side of the oil suction column (22), one end of the oil-blocking spring piece (33) is connected to the elastic oil-blocking film (32), and the other end abuts against the other side of the inner wall of the detection tube (21) under the action of its own elasticity, and a plurality of V-shaped openings are provided on one side of the oil-blocking spring piece (33) close to the oil suction column (22).

7. A throttling manifold for preventing leakage in oil wells according to claim 6, characterized in that: The oil retaining assembly also includes: An adjusting block (34), the adjusting block (34) being hinged in the through groove (31), one side of the adjusting block (34) being in contact with the oil retaining film (32) and connected to the oil retaining spring sheet (33), and the other side of the adjusting block (34) being provided with a wedge-shaped surface; An adjusting sleeve (35) is slidably arranged on the surface of the detection tube (21), and an adjusting groove (36) is arranged on the inner wall of the adjusting sleeve (35). The adjusting groove (36) comprises a plane section and an inclined section. The inclined section is arranged close to the oil suction column (22), and the width of the plane section is greater than the width of the inclined section.

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