Two-stage adjustable fixed oil nozzle type linear opening throttling device

Abstract

The utility model discloses a two-stage adjustable fixed oil nozzle type linear opening throttling device, and belongs to the technical field of automation of oil and gas exploitation equipment. The device comprises a side surface dismounting outer shell, an oil nozzle switching device and a radial rotation throttling device. The oil nozzle switching device is adopted, multiple sets of oil nozzles of different specifications are placed in the oil nozzle switching device, the oil nozzles of different specifications can be switched according to working condition requirements, and the problem that an existing fixed throttle valve can not adapt to different working condition requirements due to the fact that only one oil nozzle can be assembled is solved. The outer shell is disassembled from the side face, the oil nozzle can be taken out from the side face and replaced, and the problems that in an existing fixed throttling valve, the process of replacing other fixed oil nozzles is tedious and tedious, and the assembling difficulty is large are solved. The radial rotary throttling device is adopted, the flow section can be further reduced to reduce the flow and pressure of fluid, more accurate flow and pressure control is achieved, and the problems that an existing fixed throttling valve can only conduct throttling pressure reduction adjustment once, and the expected throttling pressure reduction purpose is difficult to achieve are solved.

Description

Technical Field

[0001] The invention relates to the technical field of automation of oil and gas production equipment, in particular to a two-stage adjustable fixed oil nozzle type linear opening throttling device. Background Art

[0002] In the process of oil and gas production, the throttle manifold is a commonly used device to achieve the functions of throttling and reducing pressure and allocating production. The fixed throttle valve is a crucial component in the throttle manifold. It controls the oil and gas flow and stabilizes the wellhead pressure to ensure stable production and avoid damage to the oil well. Reasonable configuration of the throttle valve is crucial to improving the production efficiency of the oil well, ensuring safety and ensuring sustainable production.

[0003] According to whether the opening can be adjusted, the current throttle valves can be divided into two categories: fixed and adjustable. Adjustable throttle valves have the advantages of high flexibility and wide adjustable range. The valve opening or throttle hole size can be adjusted according to changes in working conditions and process requirements, thereby changing the flow rate and pressure drop. However, the adjustable throttle valve has the problem of unstable relationship between valve opening change and flow rate and pressure drop, and cannot accurately control gas-liquid parameters. In contrast, fixed throttle valves have simple design, stable structure, low cost, fixed flow rate, and are suitable for occasions requiring fixed flow rate. They have certain predictability and controllability. However, in the ground testing and production process of oil and gas wells, fixed throttle valves also have some shortcomings.

[0004] (1) The current fixed throttle valve can only be installed with one oil nozzle, and cannot be quickly adjusted according to changes in working conditions and operating requirements.

[0005] (2) When replacing the fixed nozzle of different specifications with the existing fixed throttle valve, a complicated disassembly and assembly process is required, which is time-consuming and involves certain operational risks.

[0006] (3) When replacing the oil nozzle of different specifications with the existing fixed throttle valve, the gate valves upstream and downstream of the fixed throttle valve must be closed and the internal pressure must be released before replacement can be performed. The entire process is complicated and affects normal production efficiency.

[0007] (4) Existing fixed throttle valves only have a single-stage adjustment function and cannot perform multi-stage throttling adjustment. However, single throttling is usually difficult to achieve the desired throttling and pressure reduction effect. In scenarios where precise flow control is required, the adjustment capability of fixed throttle valves is very limited, and it is difficult to meet the needs of precise adjustment of different flow ranges in complex processes or applications.

[0008] Therefore, in order to effectively combine the respective advantages of the adjustable throttle valve and the fixed throttle valve and effectively solve the shortcomings of the existing throttle valve during use, it is urgent to invent a new throttling device to meet the production process of oil and gas wells. Factors such as oil well production and pressure will change over time. It is necessary to flexibly and quickly adjust the flow channel size or area of ​​the throttle valve to meet the changing working conditions, so as to achieve the purpose of linear adjustment of flow rate and pressure drop with opening within a certain range. Summary of the invention

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a two-stage adjustable fixed oil nozzle type linear opening throttling device. The present invention adopts an oil nozzle switching device. Since multiple groups of oil nozzles are installed on the device, suitable oil nozzles can be switched as needed to work to meet the flow requirements under different working conditions, thereby solving the problem that the existing fixed throttle valve can only be installed with one oil nozzle, and the flow cannot be flexibly adjusted according to different working conditions, resulting in flow mismatch and reduced production efficiency; the present invention adopts a side disassembly and assembly of the external shell. When the oil nozzle needs to be replaced due to erosion or other reasons, the oil nozzle can be taken out from the side and replaced, thereby solving the problem that the existing fixed throttle valve has a cumbersome and lengthy process and is difficult to assemble when replacing the oil nozzle; a radial rotating throttling device is adopted, which is connected in series with the oil nozzle to realize secondary throttling. The downhole oil and gas reach the radial rotating throttling device after throttling and reducing pressure through the oil nozzle. The radial rotating throttling device can further control the flow and pressure of the downhole oil and gas by rotating the radial rotating disk to change the flow cross-section. More accurate flow and pressure control can be achieved by linkage adjustment of the two throttling devices, thereby solving the problem that the existing fixed throttle valve can only perform throttling and reducing pressure once and cannot accurately control the gas-liquid flow and pressure.

[0010] The objective of the present invention is achieved through the following technical solutions: a two-stage adjustable fixed oil nozzle type linear opening throttling device, characterized in that it includes a side disassembly external shell, an oil nozzle switching device, and a radial rotation throttling device; the side disassembly external shell includes a valve body, an upper side mounting plate, a lower side mounting plate, and a top cover plate; the oil nozzle switching device includes a motor I, a sealing steel ring, a sealing ring I, an annular support, a thrust cylindrical roller bearing, a sealing ring II, a flow sleeve, a sealing ring III, an oil nozzle, a valve core turntable, a deep groove ball bearing I, a sealing ring IV, and a coupling; the valve body is provided with a threaded hole I, a groove I, a boss I, a groove II, a threaded hole II, a boss II, a boss III, a boss IV, a threaded hole III, a threaded hole IV, a boss V, a section I, and a groove III, the flow sleeve is installed on the boss I and installed in the valve core turntable, and the thrust cylindrical roller bearing is installed In groove Ⅰ, the valve core turntable is installed on the thrust cylindrical roller bearing, the annular support is installed outside the valve core turntable, there are 4 groups of 8 oil nozzles in total and the same specifications, the oil nozzle is installed in the side of the valve core turntable, the sealing steel ring is installed in the sealing ring Ⅰ, the sealing ring Ⅰ is installed on the boss Ⅱ and the boss Ⅴ, the two deep groove ball bearings Ⅰ are installed on the sealing ring Ⅰ on the upper and lower sides of the annular support, the sealing ring Ⅳ is installed in the inner ring of the deep groove ball bearing Ⅰ and contacts the outer wall of the valve core turntable, the coupling is installed on the upper part of the valve core turntable, the upper side mounting plate is installed on the boss Ⅲ, the top cover plate is installed on the boss Ⅳ and fixed on the threaded hole Ⅰ by screws, the motor Ⅰ is installed on the top cover plate and connected to the coupling, the radial rotation throttling device is installed in groove Ⅲ, and the lower side mounting plate is installed outside the radial rotation throttling device;

[0011] The radial rotary throttling device comprises a radial throttling upper housing, a planetary gear, an internal meshing slewing support bearing, a sun gear, a deep groove ball bearing II, a radial rotating disk, a baffle disk, a motor II, a radial throttling lower housing, a cylindrical battery, and a bottom sealing disk. The upper portion of the radial throttling upper housing is provided with a threaded hole V, a boss VI, a threaded hole VI, a boss VII, a threaded hole VII, and a boss VIII. The side is provided with a protrusion I. The bottom is provided with a groove IV, a threaded hole VIII, and a flow passage I. The internal meshing slewing support bearing is provided with a through hole VIII and a threaded hole XI. The internal meshing slewing support bearing is placed on the convex On platform VI, the through hole VIII on the internal meshing slewing support bearing and the threaded hole V on the radial throttling upper shell are fixed by screws, the baffle plate is installed on the boss VII, the deep groove ball bearing II is installed on the boss VIII, the planetary gear is installed on the deep groove ball bearing II, the radial rotating plate is installed above the baffle plate, the motor II is installed in the groove IV, the sun gear is installed on the motor II, the radial throttling lower shell is installed under the radial throttling upper shell, the cylindrical battery is installed in the radial throttling lower shell, and the bottom sealing plate is installed under the radial throttling lower shell.

[0012] Furthermore, the valve core turntable is provided with a groove V and a threaded hole IX on the upper part, grooves VI are evenly distributed on the side, and grooves VII and groove VIII are provided on the bottom. The coupling is installed in the groove V and fixed on the threaded hole IX by screws. The oil nozzle is installed in the groove VI, the upper part of the thrust cylindrical roller bearing is installed in the groove VII, and the flow sleeve is installed in the groove VIII.

[0013] Furthermore, the flow sleeve is provided with a flow hole I, an annular groove I, a through hole I, and an annular groove II, the sealing ring III is installed in the annular groove I, the through hole I on the flow sleeve and the threaded hole II on the valve body are connected by screws, and the sealing ring II is installed in the annular groove II.

[0014] Furthermore, the annular support is provided with a flow hole II and a straight section II, and the straight section II on the annular support is in contact with the straight section I on the valve body.

[0015] Furthermore, the radial rotating disk is provided with a through hole II, a flow hole III, and a groove IX, the baffle disk is installed in the groove IX, and the threaded hole XI on the internal meshing slewing support bearing and the through hole II on the radial rotating disk are fixed by screws.

[0016] Furthermore, the baffle plate is provided with a through hole III and a flow hole IV, and the through hole III on the baffle plate is connected to the threaded hole VII on the radial throttling upper shell by screws.

[0017] Furthermore, the radial throttling lower shell is provided with a flow channel II, a wire hole, a protrusion II, a through hole IV, a battery mounting groove, a threaded hole X, and a cable hole I. The protrusion II is installed in the groove II, the cylindrical battery is installed in the battery mounting groove, and the through hole IV on the radial throttling lower shell and the threaded hole VIII on the radial throttling upper shell are fixed by screws.

[0018] Furthermore, the bottom sealing disk is provided with a through hole V, a flow hole V, and a protrusion III. The through hole V on the bottom sealing disk is connected to the threaded hole X on the radial throttling lower shell through screws, and the protrusion III is installed in the battery mounting groove.

[0019] Furthermore, a through hole VI is provided on the upper side mounting plate, and the through hole VI on the upper side mounting plate is fixed to the threaded hole IV on the valve body by screws.

[0020] Furthermore, the lower side mounting plate is provided with a through hole VII, a groove X, an annular groove III, and a cable hole II. The protrusions I and II are installed in the groove X, and the annular groove III is used for installing a sealing ring.

[0021] The beneficial effects of the present invention are:

[0022] (1) The nozzle switching device is equipped with multiple groups of nozzles, which can flexibly adjust the flow rate and pressure to meet changing working conditions by switching nozzles of different specifications.

[0023] (2) The nozzle replacement mode is set to the side-access mode, which reduces the difficulty of disassembly and assembly, saves assembly time, and facilitates daily maintenance, inspection and replacement of core components and wearing parts.

[0024] (3) The throttle valve continues to work when the nozzle is replaced, reducing downtime and avoiding work interruption, thereby improving production continuity.

[0025] (4) Through double-stage throttling, precise flow and pressure control of gas and liquid can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a full cross-sectional schematic diagram of the present invention;

[0027] Figure 2 A three-dimensional schematic diagram of the valve body of the present invention;

[0028] Figure 3 A half-section schematic diagram and a left side view of the valve body of the present invention;

[0029] Figure 4 It is a three-dimensional schematic diagram of the radial rotary throttling device of the present invention;

[0030] Figure 5 It is an exploded view of the radial rotary throttling device of the present invention;

[0031] Figure 6 It is a three-dimensional schematic diagram of the radial throttling upper casing of the present invention;

[0032] Figure 7 A three-dimensional schematic diagram of the valve core rotating disk of the present invention

[0033] Figure 8 The three-dimensional stereogram and half-section diagram of the flow sleeve of the present invention;

[0034] Fig. 9 A three-dimensional schematic diagram of the annular support of the present invention;

[0035] Fig.10 A three-dimensional schematic diagram of a radial rotating disk of the present invention;

[0036] Fig.11 A three-dimensional schematic diagram of the baffle plate of the present invention;

[0037] Fig.12 It is a three-dimensional schematic diagram of the radial throttling lower casing of the present invention;

[0038] Fig.13 A three-dimensional schematic diagram of the sealing disk of the motor of the present invention;

[0039] Fig.14 A three-dimensional schematic diagram of the upper side-mounted cover plate of the present invention;

[0040] Fig.15 It is a three-dimensional schematic diagram of the lower side-mounted cover plate of the present invention;

[0041] Fig.16 A three-dimensional schematic diagram of the internal meshing slewing bearing of the present invention;

[0042] In the figure, 1, motor Ⅰ; 2, cover plate; 3, sealing steel ring; 4, sealing ring Ⅰ; 5, upper side mounting plate; 501, through hole Ⅵ; 6, annular support; 601, flow hole Ⅱ; 602, straight section Ⅱ; 7, thrust cylindrical roller bearing; 8, sealing ring Ⅱ; 9, lower side mounting plate; 901, through hole Ⅶ; 902, groove Ⅹ; 903, ring groove Ⅲ; 904, cable hole Ⅱ; 10, valve body; 101, threaded hole Ⅰ; 102, groove Ⅰ; 103, boss Ⅰ; 104, groove Ⅱ; 105, threaded hole Ⅱ; 106, boss Ⅱ; 1 07, boss III; 108, boss IV; 109, threaded hole III; 1010, threaded hole IV; 1011, boss V; 1012, section I; 1013, groove III; 11, radial throttling upper shell; 1101, threaded hole V; 1102, boss VI; 1103, protrusion I; 1104, threaded hole VI; 1105, boss VII; 1106, threaded hole VII; 1107, boss VIII; 1108, groove IV; 1109, threaded hole VIII; 1110, flow passage I; 12, flow sleeve; 1201, flow hole I ; 1202, ring groove Ⅰ; 1203, through hole Ⅰ; 1204, ring groove Ⅱ; 13, sealing ring Ⅲ; 14, oil nozzle; 15, valve core turntable; 1501, groove Ⅴ; 1502, groove Ⅵ; 1503, groove Ⅶ; 1504, groove Ⅷ; 1505, threaded hole Ⅸ; 16, deep groove ball bearing Ⅰ; 17, sealing ring Ⅳ; 18, coupling; 19, planetary gear; 20, internal meshing slewing support bearing; 2001, through hole Ⅷ; 2002, threaded hole Ⅺ; 21, sun gear; 22, deep groove ball bearing Ⅱ; 23, radial rotating disk ; 2301, through hole II; 2302, flow hole III; 2303, groove IX; 24, baffle plate; 2401, flow hole IV; 2402, through hole III; 25, motor II; 26, radial throttling lower shell; 2601, flow channel II; 2602, wire hole; 2603, protrusion II; 2604, through hole IV; 2605, battery mounting slot; 2606, threaded hole X; 2607, cable hole I; 27, cylindrical battery; 28, bottom sealing plate; 2801, through hole V; 2802, flow hole V; 2803, protrusion III. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0044] In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are directions or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] like Figure 1-16As shown, a two-stage adjustable fixed oil nozzle type linear opening throttling device is characterized in that it includes a side disassembly outer shell, an oil nozzle switching device, and a radial rotation throttling device; the side disassembly outer shell includes a valve body 10, an upper side mounting plate 5, a lower side mounting plate 9, and a top cover plate 2; the oil nozzle switching device includes a motor Ⅰ1, a sealing steel ring 3, a sealing ring Ⅰ4, an annular support 6, a thrust cylindrical roller bearing 7, a sealing ring Ⅱ8, a flow sleeve 12, a sealing ring Ⅲ13, an oil nozzle 14, a valve core rotating disk 15, a deep Groove ball bearing Ⅰ16, sealing ring Ⅳ17, coupling 18; the valve body 10 is provided with threaded hole Ⅰ101, groove Ⅰ102, boss Ⅰ103, groove Ⅱ104, threaded hole Ⅱ105, boss Ⅱ106, boss Ⅲ107, boss Ⅳ108, threaded hole Ⅲ109, threaded hole Ⅳ1010, boss Ⅴ1011, section Ⅰ1012, groove Ⅲ1013, the flow sleeve 12 is installed on the boss Ⅰ103 and installed in the valve core turntable 15, the thrust cylindrical roller bearing 7 is installed Installed in the groove Ⅰ102, the valve core turntable 15 is installed on the thrust cylindrical roller bearing 7, the annular support 6 is installed outside the valve core turntable 15, the oil nozzle 14 is 4 groups of 8 in total and the same group has the same specifications, the oil nozzle 14 is installed in the side of the valve core turntable 15, the sealing steel ring 3 is installed in the sealing ring Ⅰ4, the sealing ring Ⅰ4 is installed on the boss Ⅱ106 and the boss Ⅴ1011, the deep groove ball bearing Ⅰ16 is installed on the upper and lower sides of the annular support 6 The sealing ring Ⅰ4 The ring IV17 is installed in the inner ring of the deep groove ball bearing I16 and contacts the outer wall of the valve core rotating disk 15, the coupling 18 is installed on the upper part of the valve core rotating disk 15, the upper side mounting plate 5 is installed on the boss III107, the top cover plate 2 is installed on the boss IV108 and fixed on the threaded hole I101 by screws, the motor I1 is installed on the top cover plate 2 and connected to the coupling 18, the radial rotation throttling device is installed in the groove III1013, and the lower side mounting plate 9 is installed outside the radial rotation throttling device;

[0048] The radial rotary throttling device comprises a radial throttling upper shell 11, a planetary gear 19, an internal meshing slewing support bearing 20, a sun gear 21, a deep groove ball bearing II 22, a radial rotating disk 23, a baffle disk 24, a motor II 25, a radial throttling lower shell 26, a cylindrical battery 27, and a bottom sealing disk 28. The upper portion of the radial throttling upper shell 11 is provided with a threaded hole V1101, a boss VI1102, a threaded hole VI1104, a boss VII1105, a threaded hole VII1106, and a boss VIII1107, a side portion is provided with a protrusion I1103, a bottom portion is provided with a groove IV1108, a threaded hole VIII1109, and a flow passage I1110, the internal meshing slewing support bearing 20 is provided with a through hole VIII2001 and a threaded hole XI2002, the internal meshing slewing support The support bearing 20 is placed on the boss VI 1102, the through hole VIII 2001 on the internal meshing slewing support bearing 20 is fixed to the threaded hole V1101 on the radial throttling upper shell 11 by screws, the baffle plate 24 is installed on the boss VII 1105, the deep groove ball bearing II 22 is installed on the boss VIII 1107, the planetary gear 19 is installed on the deep groove ball bearing II 22, the radial rotating disk 23 is installed above the baffle plate 24, the motor II 25 is installed in the groove IV 1108, the sun gear 21 is installed on the motor II 25, the radial throttling lower shell 26 is installed under the radial throttling upper shell 11, the cylindrical battery 27 is installed in the radial throttling lower shell 26, and the bottom sealing disk 28 is installed under the radial throttling lower shell 26.

[0049] The valve core turntable 15 is provided with a groove V1501 and a threaded hole IX1505 on the upper part, grooves VI1502 are evenly distributed on the side, and grooves VII1503 and groove VIII1504 are provided on the bottom. The coupling 18 is installed in the groove V1501 and fixed on the threaded hole IX1505 by screws. The oil nozzle 14 is installed in the groove VI1502. The upper part of the thrust cylindrical roller bearing 7 is installed in the groove VII1503, and the flow sleeve 12 is installed in the groove VIII1504.

[0050] The flow sleeve 12 is provided with a flow hole Ⅰ1201, an annular groove Ⅰ1202, a through hole Ⅰ1203, and an annular groove Ⅱ1204. The sealing ring Ⅲ13 is installed in the annular groove Ⅰ1202. The through hole Ⅰ1203 on the flow sleeve 12 and the threaded hole Ⅱ105 on the valve body 10 are connected by screws. The sealing ring Ⅱ8 is installed in the annular groove Ⅱ1204.

[0051] The annular support 6 is provided with a flow hole II 601 and a straight section II 602 . The straight section II 602 on the annular support 6 is in contact with the straight section I 1012 on the valve body 10 .

[0052] The radial rotating disk 23 is provided with a through hole II 2301, a flow hole III 2302, and a groove IX 2303. The baffle disk 24 is installed in the groove IX 2303. The threaded hole XI 2002 on the internal meshing slewing support bearing 20 and the through hole II 2301 on the radial rotating disk 23 are fixed by screws.

[0053] The baffle plate 24 is provided with a through hole III 2402 and a flow hole IV 2401 . The through hole III 2402 on the baffle plate 24 is connected to the threaded hole VII 1106 on the radial throttling upper shell 11 by screws.

[0054] The radial throttling lower shell 26 is provided with a flow channel II 2601, a wire hole 2602, a protrusion II 2603, a through hole IV 2604, a battery mounting groove 2605, a threaded hole X 2606, and a cable hole I 2607. The protrusion II 2603 is installed in the groove II 104, and the cylindrical battery 27 is installed in the battery mounting groove 2605. The through hole IV 2604 on the radial throttling lower shell 26 and the threaded hole VIII 1109 on the radial throttling upper shell 11 are fixed by screws.

[0055] The bottom sealing disk 28 is provided with a through hole V2801, a flow hole V2802, and a protrusion III2803. The through hole V2801 on the bottom sealing disk 28 is connected to the threaded hole X2606 on the radial throttling lower shell 26 by screws, and the protrusion III2803 is installed in the battery installation groove 2605.

[0056] The upper side mounting plate 5 is provided with a through hole VI501, and the through hole VI501 on the upper side mounting plate 5 is fixed to the threaded hole IV1010 on the valve body 10 by screws.

[0057] The lower side mounting plate 9 is provided with a through hole VII 901, a groove X 902, an annular groove III 903, and a cable hole II 904. The protrusion I 1103 and the protrusion II 2603 are installed in the groove X 902. The annular groove III 903 is used for installing a sealing ring.

[0058] The working process of the present invention is as follows:

[0059] When the throttle valve is working, it is determined whether the working oil nozzle 14 needs to be replaced. If it needs to be replaced, the motor Ⅰ1 will drive the valve core rotary disc 15 to rotate, and the oil nozzle 14 of the same group and the same specification will be switched to replace the oil nozzle 14 to continue working, so as to ensure the continuity of throttling and pressure reduction. Then, the upper side cover plate 5 is removed, and the oil nozzle 14 that cannot continue to work due to erosion or other reasons is replaced. After the replacement is completed, the upper side cover plate 5 is installed again, and the replacement work of the oil nozzle 14 is completed. When the oil and gas flow rate in the well changes and the oil nozzle currently working is When 14 cannot meet the working requirements, motor I will drive the valve core turntable 15 to rotate and switch to the oil nozzle 14 that adapts to the current working conditions to perform linear opening adjustment to control the flow. At this time, motor II 25 can drive the sun gear 21 to drive the planetary gear 19 to rotate, and then drive the inner ring of the internal meshing slewing support bearing 20 to rotate. Because the inner ring of the internal meshing slewing support bearing 20 is fixed to the radial rotating disk 23 by screws, the radial selection disk 23 can start to rotate and complete the secondary throttling by changing the flow area, thereby achieving the effect of accurately controlling the downhole flow and pressure.

[0060] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A two-stage adjustable fixed nozzle type linear opening throttling device, characterized in that: It comprises a side-disassembled external shell, an oil nozzle switching device, and a radial rotary throttling device; the side-disassembled external shell comprises a valve body (10), an upper side mounting plate (5), a lower side mounting plate (9), and a top cover plate (2); the oil nozzle switching device comprises a motor I (1), a sealing steel ring (3), a sealing ring I (4), an annular support (6), a thrust cylindrical roller bearing (7), a sealing ring II (8), a flow sleeve (12), a sealing ring III (13), an oil nozzle (14), a valve core rotating disk (15), a deep groove ball bearing I (16), a sealing ring IV (17), and a coupling (18); The valve body (10) is provided with a threaded hole I (101), a groove I (102), a boss I (103), a groove II (104), a threaded hole II (105), a boss II (106), a boss III (107), a boss IV (108), a threaded hole III (109), a threaded hole IV (1010), a boss V (1011), a cut surface I (1012), and a groove III (1013); the flow sleeve (12) is mounted on the boss I (103) and in the valve core rotating disk (15); the thrust cylindrical roller bearing (7) is mounted in the groove I (102). The valve core rotating disk (15) is installed on the thrust cylindrical roller bearing (7), the annular support (6) is installed outside the valve core rotating disk (15), the oil nozzles (14) are 4 groups with a total of 8 and the same specifications, the oil nozzles (14) are installed on the side of the valve core rotating disk (15), the sealing steel ring (3) is installed in the sealing ring I (4), the sealing ring I (4) is installed on the boss II (106) and the boss V (1011), the two deep groove ball bearings I (16) are installed on the sealing rings I (4) on the upper and lower sides of the annular support (6), the sealing ring IV (1 7) is installed in the inner ring of the deep groove ball bearing I (16) and contacts the outer wall of the valve core rotary disc (15), the coupling (18) is installed on the upper part of the valve core rotary disc (15), the upper side mounting plate (5) is installed on the boss III (107), the top cover plate (2) is installed on the boss IV (108) and is fixed to the threaded hole I (101) by screws, the motor I (1) is installed on the top cover plate (2) and connected to the coupling (18), the radial rotation throttling device is installed in the groove III (1013), and the lower side mounting plate (9) is installed outside the radial rotation throttling device; The radial rotary throttling device comprises a radial throttling upper housing (11), a planetary gear (19), an internal meshing slewing support bearing (20), a sun gear (21), a deep groove ball bearing II (22), a radial rotating disk (23), a baffle disk (24), a motor II (25), a radial throttling lower housing (26), a cylindrical battery (27), and a bottom sealing disk (28). The upper portion of the radial throttling upper housing (11) is provided with a threaded hole V (1101). Boss VI (1102), threaded hole VI (1104), boss VII (1105), threaded hole VII (1106), boss VIII (1107), a convexity I (1103) is provided on the side, a groove IV (1108), a threaded hole VIII (1109), and a flow passage I (1110) are provided on the bottom, and a through hole VIII (2001) and a threaded hole XI (2002) are provided on the inner meshing slewing support bearing (20), and the inner meshing slewing support bearing (20) is provided with a through hole VIII (2001) and a threaded hole XI (2002). The support bearing (20) is placed on the boss VI (1102), the through hole VIII (2001) on the internal meshing slewing support bearing (20) is fixed to the threaded hole V (1101) on the radial throttling upper housing (11) by screws, the baffle plate (24) is mounted on the boss VII (1105), the deep groove ball bearing II (22) is mounted on the boss VIII (1107), and the planetary gear (19) is mounted on the deep groove ball bearing II (22) The radial rotating disk (23) is installed above the baffle disk (24), the motor II (25) is installed in the groove IV (1108), the sun gear (21) is installed on the motor II (25), the radial throttling lower housing (26) is installed under the radial throttling upper housing (11), the columnar battery (27) is installed in the radial throttling lower housing (26), and the bottom sealing disk (28) is installed under the radial throttling lower housing (26).

2. A two-stage adjustable fixed nozzle linear opening throttling device according to claim 1, characterized in that: The valve core turntable (15) is provided with a groove V (1501) and a threaded hole IX (1505) on the upper part, grooves VI (1502) are evenly distributed on the side, and grooves VII (1503) and groove VIII (1504) are provided on the bottom. The coupling (18) is installed in the groove V (1501) and fixed on the threaded hole IX (1505) by screws. The oil nozzle (14) is installed in the groove VI (1502). The upper part of the thrust cylindrical roller bearing (7) is installed in the groove VII (1503), and the flow sleeve (12) is installed in the groove VIII (1504).

3. A two-stage adjustable fixed nozzle linear opening throttling device according to claim 1, characterized in that: The flow sleeve (12) is provided with a flow hole I (1201), an annular groove I (1202), a through hole I (1203), and an annular groove II (1204); the sealing ring III (13) is installed in the annular groove I (1202); the through hole I (1203) on the flow sleeve (12) and the threaded hole II (105) on the valve body (10) are connected by screws; the sealing ring II (8) is installed in the annular groove II (1204).

4. A two-stage adjustable fixed nozzle linear opening throttling device according to claim 1, characterized in that: The annular support (6) is provided with a flow hole II (601) and a straight section II (602), and the straight section II (602) on the annular support (6) is in contact with the straight section I (1012) on the valve body (10).

5. A two-stage adjustable fixed nozzle type linear opening throttling device according to claim 1, characterized in that: The radial rotating disk (23) is provided with a through hole II (2301), a flow hole III (2302), and a groove IX (2303); the baffle disk (24) is installed in the groove IX (2303); the threaded hole XI (2002) on the internal meshing slewing support bearing (20) and the through hole II (2301) on the radial rotating disk (23) are fixed by screws.

6. A two-stage adjustable fixed nozzle linear opening throttling device according to claim 1, characterized in that: The baffle plate (24) is provided with a through hole III (2402) and a flow hole IV (2401). The through hole III (2402) on the baffle plate (24) is connected to the threaded hole VII (1106) on the radial throttling upper shell (11) by means of screws.

7. A two-stage adjustable fixed nozzle linear opening throttling device according to claim 1, characterized in that: The radial throttling lower shell (26) is provided with a flow passage II (2601), a wire hole (2602), a protrusion II (2603), a through hole IV (2604), a battery mounting groove (2605), a threaded hole X (2606), and a cable hole I (2607). The protrusion II (2603) is installed in the groove II (104), and the cylindrical battery (27) is installed in the battery mounting groove (2605). The through hole IV (2604) on the radial throttling lower shell (26) and the threaded hole VIII (1109) on the radial throttling upper shell (11) are fixed by screws.

8. The two-stage adjustable fixed nozzle linear opening throttling device according to claim 1 is characterized in that: The bottom sealing disk (28) is provided with a through hole V (2801), a flow hole V (2802), and a protrusion III (2803). The through hole V (2801) on the bottom sealing disk (28) is connected to the threaded hole X (2606) on the radial throttling lower shell (26) by screws, and the protrusion III (2803) is installed in the battery installation groove (2605).

9. A two-stage adjustable fixed nozzle linear opening throttling device according to claim 1, characterized in that: The upper side mounting plate (5) is provided with a through hole VI (501), and the through hole VI (501) on the upper side mounting plate (5) is fixed to the threaded hole IV (1010) on the valve body (10) by means of screws.

10. The two-stage adjustable fixed nozzle linear opening throttling device according to claim 1, characterized in that: The lower side mounting plate (9) is provided with a through hole VII (901), a groove X (902), an annular groove III (903), and a cable hole II (904); the protrusion I (1103) and the protrusion II (2603) are installed in the groove X (902); the annular groove III (903) is used for installing a sealing ring.

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