Remote intelligent control device for oil production wellhead

Abstract

The utility model provides an oil extraction wellhead remote intelligent control device which comprises an electric oil nozzle installed on a Christmas tree through a connecting pipe, the inner wall of the connecting pipe is fixedly installed and communicated with a shell, a pressure detection mechanism is arranged in the shell, and the pressure detection mechanism is composed of a speed increasing assembly and a range increasing assembly. The range extending assembly comprises a first rotating shaft, a hollow shaft and a spiral resistor, a limiting ring is fixed to the inner wall of the shell, the top of the limiting ring is rotationally connected with a turntable, the hollow shaft is in transmission fit with the top of the turntable through the speed increasing assembly, and the first rotating shaft is fixedly connected to the top of the hollow shaft; according to the utility model, the spiral resistor is arranged, the shape characteristic of the spiral resistor is utilized, and the moving path of the electrode a is converted from a straight line to a spiral type, so that the moving stroke of the electrode a is expanded, the variable quantity of the resistance connected to the ammeter is large, and the ammeter can generate large current change when the variable quantity of pressure is small, thereby improving the detection precision.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wellhead platform oil production, in particular to a remote intelligent control device for an oil production wellhead. Background Art

[0002] Wellhead equipment and Christmas trees, as important equipment for controlling and regulating oil and gas well production on offshore production platforms, are usually composed of casing heads, tubing heads, Christmas trees, etc. The Christmas tree is located at the opening leading to the top of the oil well and is an important component that connects the production pipelines and oil flow pipes from underground, and serves as an important barrier to isolate the top of the oil well from the external environment.

[0003] After searching, the Chinese patent publication number CN221423165U discloses a remote intelligent control device for an oil wellhead, including an oil tree, an electric nozzle, a wellhead control panel, a signal acquisition module and an intelligent control unit; the electric nozzle is arranged on the oil tree; the electric nozzle is connected to the intelligent control unit, and the intelligent control unit is connected to the signal acquisition module through a communication cable, and the intelligent control unit obtains the status data of the signal acquisition module and the electric nozzle in real time.

[0004] The above patent has the following shortcomings: it relies on a pressure transmitter for detection, but the pressure transmitter itself has errors. When the pressure change is small, it will be absorbed by the error, resulting in low detection accuracy.

[0005] Therefore, a remote intelligent control device for oil wellhead is proposed. Utility Model Content

[0006] In view of this, the embodiments of the present utility model hope to provide an oil wellhead remote intelligent control device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is achieved as follows: a remote intelligent control device for an oil wellhead, including an electric oil nozzle installed on an oil production tree through a connecting pipe, the inner wall of the connecting pipe is fixedly installed and connected to a shell, a pressure detection mechanism is arranged in the shell, the pressure detection mechanism is composed of an increasing speed component and a stroke extending component, the stroke extending component includes a rotating shaft 1, a hollow shaft and a spiral resistor, a limit ring is fixed on the inner wall of the shell, a turntable is rotatably connected to the top of the limit ring, the hollow shaft is matched with the top of the turntable through the transmission of the increasing speed component, the rotating shaft 1 is fixedly connected to the top of the hollow shaft, the spiral resistor is fixedly connected to the inner wall of the shell, the outer wall of the spiral resistor is contacted with an electrode a, the electrode a is longitudinally slidably connected to the outer wall of the rotating shaft 1 through a connecting rod, one end of the spiral resistor is fixedly connected to an electrode b, and the electrode a and the electrode b are electrically connected to the same ammeter.

[0008] In some embodiments, the ammeter is communicatively connected to an intelligent control terminal, and the intelligent control terminal is controllably connected to an electric oil nozzle.

[0009] In some embodiments, the speed increasing assembly includes a first gear ring and a second gear ring, and the first gear ring is fixedly connected to the bottom of the hollow shaft.

[0010] In some embodiments, the first gear ring is rotatably engaged with the top of the turntable, and the second gear ring is fixedly connected to the top of the turntable.

[0011] In some embodiments, a plurality of gears are meshed on the opposite sides of the first gear ring and the second gear ring, and all the gears are rotatably connected to the same mounting bracket, and the mounting bracket is fixedly connected to the inner wall of the housing.

[0012] In some embodiments, a moving plate is slidably and position-limitedly engaged with the inner wall of the housing, a second rotating shaft is fixedly connected to the top of the moving plate, and a spiral groove is formed in the inner wall of the second rotating shaft.

[0013] In some embodiments, a limiting post is fixedly connected to the inner wall of the turntable, and one end of the limiting post is movably and position-limitedly engaged with the inner wall of the spiral groove through a ball.

[0014] In some embodiments, a diaphragm is fixedly connected to the inner wall of the Christmas tree, and the inner cavity of the Christmas tree between the moving plate and the diaphragm is filled with hydraulic oil.

[0015] Due to the adoption of the above technical solutions in the embodiments of the present utility model, it has the following advantages:

[0016] 1. A remote intelligent control device for an oil production wellhead. By providing a spiral resistor and utilizing the shape characteristics of the spiral resistor itself, the moving path of electrode a is converted from a straight line to a spiral, thereby expanding the moving stroke of electrode a, making the change amount of the resistance accessed by the ammeter larger. Furthermore, when the change amount of pressure is small, the ammeter can also generate a large change in current, improving the detection accuracy.

[0017] 2. A remote intelligent control device for an oil production wellhead. By providing a first gear ring, a second gear ring and a mounting bracket, the speed increasing effect of the hollow shaft and the first rotating shaft can be achieved under the transmission cooperation of the three. Thus, when the change amount of pressure is small, the rotation speed of the first rotating shaft increases, making the moving speed of electrode a faster, and making the change amount of the current accessed by the ammeter larger, thereby further improving the detection accuracy.

[0018] 3. A remote intelligent control device for an oil production wellhead. By providing a diaphragm, the oil can be separated from the inner cavity of the housing, avoiding some substances in the oil from corroding the components in the housing, and ensuring the stable operation of the entire pressure detection device.

[0019] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 Front view structure diagram of the present utility model;

[0022] Figure 2 Schematic diagram of the internal structure of the housing of the present utility model;

[0023] Figure 3 Schematic diagram of the structure of the range extender assembly of the present utility model;

[0024] Figure 4 Ammeter circuit diagram of the present utility model;

[0025] Figure 5 Schematic diagram of the structure of the speed increasing assembly of the present utility model;

[0026] Figure 6 Schematic diagram of the cooperation between the spiral groove and the limiting post of the present utility model.

[0027] Reference numerals:

[0028] 1, Christmas tree; 2, electric choke; 3, connecting pipe; 4, housing; 5, first rotating shaft; 6, hollow shaft; 7, turntable; 8, spiral resistor; 9, connecting rod; 10, electrode a; 11, electrode b; 12, ammeter; 13, first gear ring; 14, second gear ring; 15, mounting bracket; 16, gear; 17, limiting ring; 18, second rotating shaft; 19, moving plate; 20, hydraulic oil; 21, diaphragm; 22, spiral groove; 23, limiting post. Detailed Embodiments

[0029] In the following text, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0030] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1:

[0033] As Figure 1-6 shown, an intelligent remote control device for an oil production wellhead includes an electric choke 2 installed on a Christmas tree 1 through a connecting pipe 3.

[0034] A housing 4 is fixedly installed and communicated with the inner wall of the connecting pipe 3. A pressure detection mechanism is arranged in the housing 4. The pressure detection mechanism is composed of a speed increasing component and a stroke increasing component. The stroke increasing component includes a first rotating shaft 5, a hollow shaft 6 and a spiral resistor 8. A limiting ring 17 is fixed on the inner wall of the housing 4. The top of the limiting ring 17 is rotatably connected with a turntable 7. The hollow shaft 6 is in transmission cooperation with the top of the turntable 7 through the speed increasing component. The first rotating shaft 5 is fixedly connected to the top of the hollow shaft 6. The spiral resistor 8 is fixedly connected to the inner wall of the housing 4. An electrode a 10 is in contact and cooperation with the outer wall of the spiral resistor 8. The electrode a 10 is longitudinally slidably connected to the outer wall of the first rotating shaft 5 through a connecting rod 9. One end of the spiral resistor 8 is fixedly connected with an electrode b 11. The electrode a 10 and the electrode b 11 are electrically connected to the same ammeter 12.

[0035] When the first rotating shaft 5 and the hollow shaft 6 rotate, the first rotating shaft 5 drives the electrode a 10 to rotate through the connecting rod 9. Since the electrode a 10 is in contact and cooperation with the spiral resistor 8, the electrode a 10 moves upward in a spiral manner, so that the stroke of the electrode a 10 changes, and thus the current amount of the ammeter 12 changes. Due to the shape characteristics of the spiral resistor 8 itself, the linear motion of the electrode a 10 is converted into a spiral motion, expanding the moving stroke of the electrode a 10, so that the change amount of the resistance accessed by the ammeter 12 is larger. Therefore, when the pressure change amount is small, the ammeter 12 can also generate a large current change.

[0036] By arranging the spiral resistor 8 and utilizing the shape characteristics of the spiral resistor 8 itself, the moving path of the electrode a 10 is converted from a straight line to a spiral shape, thereby expanding the moving stroke of the electrode a 10, making the change amount of the resistance accessed by the ammeter 12 larger. Furthermore, when the pressure change amount is small, the ammeter 12 can also generate a large current change, improving the detection accuracy.

[0037] In this embodiment, the ammeter 12 is communicatively connected to an intelligent control terminal, and the intelligent control terminal is controllably connected to the electric fuel injector 2. The ammeter 12 transmits the electric current change data to the intelligent control terminal. After receiving and analyzing the data, the intelligent control terminal automatically adjusts the opening degree of the electric fuel injector 2 according to a preset value to achieve remote intelligent control.

[0038] Embodiment 2:

[0039] A remote intelligent control device for an oil production wellhead. In this embodiment, the following improvements are made on the basis of Embodiment 1, as Figure 1-6 shown:

[0040] The speed increasing assembly includes a first gear ring 13 and a second gear ring 14. The first gear ring 13 is fixedly connected to the bottom of the hollow shaft 6, and the first gear ring 13 is rotationally matched with the top of the turntable 7. The second gear ring 14 is fixedly connected to the top of the turntable 7.

[0041] A plurality of gears 16 are meshed on the opposite sides of the first gear ring 13 and the second gear ring 14. All the gears 16 are rotatably connected to the same mounting frame 15, and the mounting frame 15 is fixedly connected to the inner wall of the housing 4.

[0042] When the turntable 7 drives the second gear ring 14 to rotate, the first gear ring 13 is driven to rotate under the transmission cooperation of the gears 16. Since the meshing radius of the second gear ring 14 is larger than that of the first gear ring 13, the rotation speed of the first gear ring 13 is greater than that of the second gear ring 14, thereby achieving the speed increasing effect of the hollow shaft 6 and the first rotating shaft 5.

[0043] By providing the first gear ring 13, the second gear ring 14 and the mounting frame 15, the speed increasing effect of the hollow shaft 6 and the first rotating shaft 5 can be achieved under the transmission cooperation of the three. Thus, when the pressure change amount is small, the rotation speed of the first rotating shaft 5 increases, making the moving speed of the electrode a10 faster and the electric current change amount accessed by the ammeter 12 larger, thereby further improving the detection accuracy.

[0044] A moving plate 19 is slidably and limitatively fitted on the inner wall of the housing 4. A second rotating shaft 18 is fixedly connected to the top of the moving plate 19, and a spiral groove 22 is formed in the inner wall of the second rotating shaft 18.

[0045] A limiting column 23 is fixedly connected to the inner wall of the turntable 7, and one end of the limiting column 23 is movably and limitatively fitted on the inner wall of the spiral groove 22 through a ball.

[0046] The moving plate 19 drives the second rotating shaft 18 to move upward, and the rotation of the turntable 7 is achieved under the cooperation of the spiral groove 22 and the limiting column 23.

[0047] Embodiment 3:

[0048] A remote intelligent control device for an oil production wellhead. In this embodiment, the following improvements are made on the basis of Embodiments 1 and 2, asFigure 5 As shown in the figure:

[0049] A diaphragm 21 is fixedly connected to the inner wall of the christmas tree 1, and the inner cavity of the christmas tree 1 between the moving plate 19 and the diaphragm 21 is filled with hydraulic oil 20.

[0050] When oil passes through the connecting pipe 3, the oil transfers the pressure to the hydraulic oil 20. The hydraulic oil 20 can push the moving plate 19 to move upward. The diaphragm 21 is provided to separate the oil from the inner cavity of the housing 4, preventing some substances in the oil from corroding the components inside the housing 4 and ensuring the stable operation of the entire pressure detection device.

[0051] Working principle: When oil passes through the connecting pipe 3, the oil transfers the pressure to the hydraulic oil 20. The hydraulic oil 20 can push the moving plate 19 to drive the second rotating shaft 18 to move upward. Under the cooperation of the spiral groove 22 and the limiting post 23, the rotation of the turntable 7 is realized. The turntable 7 drives the second gear ring 14 to rotate. Under the transmission cooperation of the gear 16, the first gear ring 13 is driven to rotate. The first gear ring 13 drives the hollow shaft 6 and the first rotating shaft 5 to rotate. The first rotating shaft 5 drives the electrode a 10 to rotate through the connecting rod 9. Since the electrode a 10 is in contact and cooperation with the spiral resistor 8, the electrode a 10 moves upward in a spiral manner, causing a change in the stroke of the electrode a 10, and thus causing a change in the current flow of the ammeter 12. Due to the shape characteristics of the spiral resistor 8 itself, the linear motion of the electrode a 10 is converted into a spiral motion, expanding the moving stroke of the electrode a 10, making the change amount of the resistance connected to the ammeter 12 larger. Therefore, when the pressure change amount is small, the ammeter 12 can also generate a large current change. The ammeter 12 transmits the data of the current flow change to the intelligent control terminal. After receiving and analyzing, the intelligent control terminal automatically adjusts the opening degree of the electric oil nozzle 2 according to the preset value to achieve remote intelligent control. Since the meshing radius of the second gear ring 14 is larger than that of the first gear ring 13, the rotation speed of the first gear ring 13 is greater than that of the second gear ring 14, thus realizing the speed increasing effect of the hollow shaft 6 and the first rotating shaft 5. Furthermore, when the pressure change amount is small, the increase in the rotation speed of the first rotating shaft 5 makes the moving speed of the electrode a 10 faster, making the change in the current flow connected to the ammeter 12 larger, thereby further improving the detection accuracy.

[0052] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A remote intelligent control device for an oil production wellhead, comprising an electric choke valve (2) installed on a Christmas tree (1) through a connecting pipe (3), characterized in that: The inner wall of the connecting pipe (3) is fixedly installed and connected to a housing (4). A pressure detection mechanism is arranged in the housing (4). The pressure detection mechanism is composed of a speed increasing component and a stroke increasing component. The stroke increasing component comprises a rotating shaft (5), a hollow shaft (6) and a spiral resistor (8). A limit ring (17) is fixedly installed on the inner wall of the housing (4). The top of the limit ring (17) is rotatably connected to a rotating disk (7). The hollow shaft (6) is coupled to the top of the rotating disk (7) through the speed increasing component. The rotating shaft (5) is fixedly connected to the top of the hollow shaft (6). The spiral resistor (8) is fixedly connected to the inner wall of the housing (4). The outer wall of the spiral resistor (8) is contacted with an electrode a (10). The electrode a (10) is longitudinally slidably connected to the outer wall of the rotating shaft (5) through a connecting rod (9). One end of the spiral resistor (8) is fixedly connected to an electrode b (11). The electrodes a (10) and b (11) are electrically connected to the same ammeter (12).

2. The remote intelligent control device for an oil production wellhead according to claim 1, wherein: The ammeter (12) is communicatively connected to an intelligent control terminal, and the intelligent control terminal is control-connected to the electric oil nozzle (2).

3. The remote intelligent control device for an oil production wellhead according to claim 1, characterized in that: The speed increasing assembly comprises a gear ring 1 (13) and a gear ring 2 (14), wherein the gear ring 1 (13) is fixedly connected to the bottom of the hollow shaft (6).

4. The remote intelligent control device for an oil production wellhead according to claim 3, characterized in that: The gear ring 1 (13) is rotatably matched with the top of the turntable (7), and the gear ring 2 (14) is fixedly connected to the top of the turntable (7).

5. The remote intelligent control device for an oil production wellhead according to claim 4, characterized in that: A plurality of gears (16) are meshed on opposite sides of the gear ring 1 (13) and the gear ring 2 (14), and all the gears (16) are rotatably connected to the same mounting frame (15), which is fixedly connected to the inner wall of the housing (4).

6. The remote intelligent control device for an oil production wellhead according to claim 1, characterized in that: The inner wall of the housing (4) is slidably limited with a moving plate (19), the top of the moving plate (19) is fixedly connected with a second rotating shaft (18), and the inner wall of the second rotating shaft (18) is provided with a spiral groove (22).

7. The remote intelligent control device for oil production wellhead according to claim 6, characterized in that: The inner wall of the rotating disk (7) is fixedly connected to a limiting column (23), and one end of the limiting column (23) is engaged with the inner wall of the spiral groove (22) through a ball movable limiting fit.

8. The remote intelligent control device for an oil production wellhead according to claim 1, characterized in that: A diaphragm (21) is fixedly connected to the inner wall of the Christmas tree (1), and an inner cavity of the Christmas tree (1) between the moving plate (19) and the diaphragm (21) is filled with hydraulic oil (20).

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