Double-group induction type coupling detection alarm device

Abstract

The utility model relates to the technical field of oil well under-pressure operation, in particular to a double-group induction type coupling detection alarm device which comprises a box body and two groups of detection components arranged along the axial direction of the box body, and each detection component comprises at least two groups of sensor positioning devices uniformly distributed along the circumferential direction of the box body. The sensor positioning device comprises an induction type analog quantity sensor and a displacement sensor, the signal processing box is arranged on the box body and electrically connected with the induction type analog quantity sensor and the displacement sensor, and detected displacement signals can be converted into the diameter and the circle center position of a coupling according to the three-point circle setting principle. The average speed when the coupling passes through and the offset of an oil pipe relative to the center of a circle in a shaft can be calculated, finally, closing of the blowout prevention rubber core is controlled through the signal processing box to achieve the automatic process of lifting and lowering a tubular column, the displacement compensation device achieves the purpose of enhancing the adaptability of the device, and the efficiency of the oil well under-pressure effect can be effectively improved; the labor intensity of operators is reduced, and the abrasion of the blowout prevention rubber core is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well pressure operation, in particular to a double-group induction coupling detection and alarm device. Background Art

[0002] During the pressurized operation of a gas well, due to the high pressure in the well, the wellhead device uses a gate blowout preventer to ensure the sealing during the process of lifting and lowering the oil pipe. When the coupling position is predicted, the gate blowout preventer is opened to allow the coupling to pass smoothly. If the coupling position cannot be accurately detected, the gate blowout preventer and the coupling are likely to wear, affecting the service life of the equipment. Once the coupling is stuck, it may even cause gas leakage and a blowout accident. Therefore, accurately detecting the position of the oil pipe coupling is very important for improving the work efficiency and safety of lifting and lowering the pipe string during the pressurized operation of the gas well.

[0003] Coupling detection devices can be categorized as mechanical or electromagnetic based on their detection principles. Mechanical methods are often based on roller contact, such as the technology patented with patent number 201010234477.8. This method utilizes the diameter difference between the coupling and the tubing body. This method can easily cause wear and tear on the equipment, reducing its service life. If the tubing is eccentric or bent, the roller may contact a signal not related to the coupling, resulting in a false alarm. Electromagnetic methods, based on eddy current theory, cause changes in magnetic flux when the coupling passes through a magnetic field, ultimately affecting the electromotive force at the detection coil. However, this method is affected by the transient instability of the external power supply and by on-site oil contamination and metal waste. Detection accuracy needs to be improved, and the system is complex and expensive. Currently, manual prediction of coupling position is still the primary method during on-site construction, resulting in a low level of automation. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a double-group induction-type discharge detection and alarm device to solve the problems of low automation, poor anti-interference ability, low detection accuracy and equipment wear in the existing technology, and provide reliable coupling detection alarm signals and gate blowout preventer opening and closing instructions for intelligent pressure operation.

[0005] In order to solve the above technical problems, the utility model provides a double-group induction coupling detection alarm device, comprising:

[0006] The box body has a through hole for axial movement of the oil supply pipe;

[0007] The detection components are provided in two groups and are arranged along the axial direction of the box body. Each of the detection components includes at least two groups of sensor positioning devices evenly distributed along the circumference of the box body. The sensor positioning device includes a mounting shell provided in a groove on the box body and slidable along the radial direction of the box body, and a protective shell provided on the outside of the groove. An inductive analog sensor is provided in the mounting shell, a sealing ring is provided on the outside of the inductive analog sensor, an inner sealing end cover is provided on the outer end of the mounting shell, a support spring is provided on the outer side of the mounting shell, the outer end of the support spring is fixed to the end wall of the protective shell, an outer shell is further provided on the outer side of the protective shell, a displacement sensor is provided in the outer shell, a positioning gasket is provided on the outer side of the displacement sensor, and an outer sealing end cover is provided on the outer end of the outer shell;

[0008] The signal processing box is arranged on the box body and is electrically connected to the inductive analog sensor and the displacement sensor.

[0009] Furthermore, two sets of upper and lower anti-collision rollers are provided on the inwardly extending end of the mounting shell, and the width of the anti-collision rollers is greater than the width of the mounting shell.

[0010] Furthermore, a limit block is provided on the groove, and a sealing collar is provided between the limit block and the mounting shell.

[0011] Furthermore, an alarm light is provided in the signal processing box.

[0012] Furthermore, flanges are provided on the upper and lower sides of the box body.

[0013] Furthermore, the outer sealing end cover and the positioning gasket are provided with a circular hole for the data line to pass through.

[0014] Furthermore, each of the detection components includes three groups of sensor positioning devices.

[0015] Furthermore, the inductive analog sensor is connected to the mounting housing via threads.

[0016] Furthermore, a hidden winding groove is provided on the outer surface of the box.

[0017] The beneficial effects of the present invention are as follows: the housing can be connected to other devices, the through holes on the housing allow the oil pipe to pass through, and the detection component detects the coupling of the oil pipe. The detection component is arranged in two groups along the axial direction of the housing, with multiple detection surfaces, and the instantaneous speed of the coupling can be calculated based on the time it takes for the coupling to reach the position of different detection components. Each detection component includes at least two groups of sensor positioning devices evenly distributed along the axial direction of the housing, so as to facilitate the detection of multiple surfaces of the coupling and improve the accuracy of the detection. The sensor positioning device includes a mounting shell and a protective shell. The mounting shell is used to install an inductive analog sensor for detecting the distance between the oil pipe, the coupling and the inductive analog sensor, and then transmits it to the signal processing box. The signal processing box uses the principle of three-point circle determination to calculate the accurate diameter of the detection surface with the multiple sets of data received to determine whether the oil pipe coupling has passed, thereby avoiding detection errors caused by reasons such as oil pipe deflection and improving detection accuracy. The sealing ring and the inner sealing end cover are both used to ensure the seal between the inductive analog sensor and the mounting shell. In its natural state, the support spring can provide displacement compensation for the sliding of the mounting housing. When the oil pipe is greatly bent in the housing, the oil pipe collides with the anti-collision roller, driving the mounting housing to move and compressing the support spring. At this time, the displacement sensor in the outer shell detects the movement distance of the oil pipe and transmits the data back to the signal processing box for processing. When the support spring restores its shape, the mounting housing can be reset.

[0018] In summary, the present invention can measure the instantaneous speed of the coupling during operation, calculate the accurate diameter of the detection surface through the three-point circle principle, convert the detected displacement signal into the diameter and center position of the coupling, and calculate the average speed of the coupling when passing through and the offset of the oil pipe relative to the center of the wellbore, thereby accurately detecting the coupling and finally controlling the closing of the blowout preventer rubber core through the signal processing box to realize the automation process of lifting and lowering the pipe string. In addition, by setting different support spring models, the adaptability of different types of oil pipes and wellbores can be improved, achieving the purpose of accurately detecting the coupling, reducing the workload of operators, reducing the wear of the blowout preventer rubber core, promoting the intelligent process of pressure-carrying operations, and having good economic benefits.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the top view of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the anti-collision roller of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the sealing collar of the present invention.

[0024] In the accompanying drawings: 1. Box body; 101. Flange; 102. Groove; 103. Limit block; 104. Sealing collar; 105. Through hole; 2. Sensor positioning device; 3. Mounting shell; 4. Inductive analog sensor; 5. Sealing ring; 6. Inner sealing end cover; 7. Protective shell; 8. Support spring; 9. Outer shell; 10. Displacement sensor; 11. Positioning gasket; 12. Outer sealing end cover; 13. Signal processing box; 14. Anti-collision roller; 15. Data cable. DETAILED DESCRIPTION

[0025] With reference to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0026] Reference Figures 1 to 4 The present invention provides a dual-group inductive coupling detection and alarm device, comprising a housing 1 having a through-hole 105 for axial movement of the oil supply pipe. Furthermore, flanges 101 are provided on the upper and lower sides of the housing 1 to facilitate connection to other devices. Preferably, flanges 101 are integrally connected to the housing 1 and conform to international standards, allowing installation above the wellhead square of an operating well. Furthermore, a hidden wire winding groove is provided on the outer surface of the housing 1 to facilitate securing the data cable 15.

[0027] The detection components are provided in two groups and are arranged along the axial direction of the housing 1. In this case, the device has multiple detection surfaces and can calculate the instantaneous speed of the coupling based on the time it takes for the coupling to reach the positions of different detection components. Each of the detection components includes at least two groups of sensor positioning devices 2 evenly distributed along the circumference of the housing 1, so as to facilitate the detection of multiple surfaces of the coupling and improve the detection accuracy. Preferably, each of the detection components includes three groups of sensor positioning devices 2. The three groups of sensor positioning devices 2 can not only meet the calculation of the center and diameter of the oil pipe using the three-point circle determination principle, but also avoid excessive interference between sensors.

[0028] The sensor positioning device 2 comprises a mounting shell 3 arranged in a groove 102 on the box 1 and capable of sliding along the radial direction of the box 1, and a protective shell 7 arranged outside the groove 102, and an inductive analog sensor 4 is arranged in the mounting shell 3, preferably, the inductive analog sensor 4 is connected with the mounting shell 3 through threads, so as to fix and replace the inductive analog sensor 4. At this time, the inductive analog sensor 4 is used to detect the distance between the oil pipe and the inductive analog sensor 4, and then transmit to the signal processing box 13, and the signal processing box 13 calculates the accurate diameter and center of the detection surface by using the principle of three-point circle according to the received data, so as to judge whether the oil pipe coupling passes or not, and avoid the detection error caused by the oil pipe deflection, and improve the detection precision. The outer side of the inductive analog sensor 4 is provided with a sealing ring 5, and the outer end of the mounting shell 3 is provided with an inner sealing end cover 6, and the sealing ring 5 and the inner sealing end cover 6 are used to ensure the sealing between the inductive analog sensor 4 and the mounting shell 3. Further, the groove 102 is provided with a limiting block 103, and a sealing ring 104 is arranged between the limiting block 103 and the mounting shell 3, and the sealing ring 104 is in close contact with the mounting shell 3, so as to ensure the sealing between the groove 102 and the mounting shell 3. Further, the inner extension end of the mounting shell 3 is provided with upper and lower groups of anti-collision rollers 14, and the width of the anti-collision roller 14 is greater than the width of the mounting shell 3, so that the anti-collision roller 14 can guide the oil pipe and avoid the collision between the oil pipe and the inductive analog sensor 4.

[0029] The outer side of the mounting shell 3 is provided with a supporting spring 8, the outer end of the supporting spring 8 is fixed with the end wall of the protective shell 7, and the outer side of the protective shell 7 is further provided with an outer shell 9, the outer shell 9 is provided with a displacement sensor 10, the outer side of the displacement sensor 10 is provided with a positioning pad 11, and the outer end of the outer shell 9 is provided with an outer sealing end cover 12, and the positioning pad 11 is in close contact with the outer sealing end cover 12. When the oil pipe is bent in the box 1, the oil pipe collides with the anti-collision roller 14, drives the mounting shell 3 to move, and compresses the supporting spring 8. At this time, the displacement sensor 10 in the outer shell 9 detects the moving distance of the oil pipe, and transmits the data back to the signal processing box 13 for processing, and the supporting spring 8 restores the shape, so that the mounting shell 3 is reset. Further, the outer sealing end cover 12 and the positioning pad 11 are provided with circular holes for the data line 15 to pass through, and the data line 15 is connected with the signal processing box 13.

[0030] The signal processing box 13 is arranged on the box 1 and is electrically connected with the inductive analog sensor 4 and the displacement sensor 10, and is used for processing the data transmitted back by the inductive analog sensor 4 and the displacement sensor 10. Further, the signal processing box 13 is provided with an alarm lamp and an internal circuit system.

[0031] In summary, through the utility model, the instantaneous speed of the coupling during operation can be measured, the accurate diameter of the detection surface can be calculated through the three-point circle determination principle, the displacement signal detected can be converted into the diameter and the center position of the coupling, the average speed of the coupling during passing and the offset of the oil pipe relative to the inner circle center of the wellbore can be calculated, and then the coupling detection is accurately performed, and finally the automatic process of the pipe string is realized through the signal processing box 13 controlling the closure of the blowout prevention rubber core. And through the model setting of the different support springs 8, the adaptability of different models of oil pipes and wellbores can be improved, the purpose of accurately detecting the coupling is achieved, the working strength of the operating personnel is reduced, the wear of the blowout prevention rubber core is reduced, the intelligent process of the pressure operation is promoted, and good economic benefits are obtained.

[0032] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0033] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A double-group inductive coupling detection alarm device, characterized in that: include, The box body (1) has a through hole (105) for the axial movement of the oil supply pipe; The detection component is provided with two groups and is arranged along the axial direction of the box body (1), each of the detection components includes at least two groups of sensor positioning devices (2) uniformly distributed along the circumference of the box body (1), the sensor positioning device (2) includes a mounting shell (3) provided in a groove (102) on the box body (1) and capable of sliding along the radial direction of the box body (1), and a protective shell (7) provided outside the groove (102), an inductive analog sensor (4) is provided in the mounting shell (3), and the inductive analog sensor (4) is provided with a sealing ring (5), the outer end of the mounting shell (3) is provided with an inner sealing end cover (6), the outer side of the mounting shell (3) is provided with a support spring (8), the outer end of the support spring (8) is fixed to the end wall of the protective shell (7), the outer side of the protective shell (7) is further provided with an outer shell (9), a displacement sensor (10) is provided in the outer shell (9), a positioning gasket (11) is provided on the outer side of the displacement sensor (10), and the outer end of the outer shell (9) is provided with an outer sealing end cover (12); A signal processing box (13) is provided on the box body (1) and is electrically connected to the inductive analog quantity sensor (4) and the displacement sensor (10).

2. The double-group inductive coupling detection alarm device according to claim 1, characterized in that: An upper and a lower set of anti-collision rollers (14) are provided on the inwardly extending end of the mounting shell (3), and the width of the anti-collision rollers (14) is greater than the width of the mounting shell (3).

3. The double-group inductive coupling detection alarm device according to claim 1, characterized in that: A limiting block (103) is provided on the groove (102), and a sealing collar (104) is provided between the limiting block (103) and the mounting housing (3).

4. The double-group inductive coupling detection alarm device according to claim 1, characterized in that: An alarm light is provided in the signal processing box (13).

5. The double-group inductive coupling detection alarm device according to claim 1, characterized in that: Flanges (101) are provided on the upper and lower sides of the box body (1).

6. The double-group inductive coupling detection alarm device according to claim 1, characterized in that: The outer sealing end cover (12) and the positioning gasket (11) are provided with circular holes for the data line (15) to pass through.

7. The double-group inductive coupling detection alarm device according to claim 1, characterized in that: Each of the detection components includes three sets of sensor positioning devices (2).

8. The dual-group inductive coupling detection alarm device according to claim 1, characterized in that: The inductive analog quantity sensor (4) is connected to the mounting housing (3) via threads.

9. The double-group inductive coupling detection alarm device according to claim 1, characterized in that: A winding concealed groove is provided on the outer surface of the box body (1).

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