Multi-gear control system based on hydraulic drive
阅读说明：本技术 一种基于液压驱动的多档位控制系统 (Multi-gear control system based on hydraulic drive ) 是由 强瑜 范翔宇 周跃云 张千贵 汪丹 谢炜 于 2020-05-19 设计创作，主要内容包括：本发明公开了一种基于液压驱动的多档位控制系统,包括壳体、换向控制机构、多档位控制机构、液力传输机构和复位弹簧,所述壳体包括上壳体和下壳体,所述壳体内设置有液力传输机构,所述液力传输机构上设置有换向控制机构和多档位控制机构,所述换向控制机构和多档位控制机构之间设置有复位弹簧用以使所述换向控制机构的复位。本发明实现对RSS控制系统的机械化、可靠化和简洁化,而本发明系统机构属于纯机械式结构,为机械式控制,相较于电子控制的液压控制系统控制简便、可靠性高。(The invention discloses a multi-gear control system based on hydraulic drive, which comprises a shell, a reversing control mechanism, a multi-gear control mechanism, a hydraulic transmission mechanism and a return spring, wherein the shell comprises an upper shell and a lower shell, the hydraulic transmission mechanism is arranged in the shell, the reversing control mechanism and the multi-gear control mechanism are arranged on the hydraulic transmission mechanism, and the return spring is arranged between the reversing control mechanism and the multi-gear control mechanism to reset the reversing control mechanism. The invention realizes mechanization, reliability and simplification of the RSS control system, and the system mechanism of the invention belongs to a pure mechanical structure, is mechanical control, and has simple and convenient control and high reliability compared with an electronically controlled hydraulic control system.)
1. A many gears control system based on hydraulic drive, includes the casing, the casing includes casing and lower casing, its characterized in that: the hydraulic transmission mechanism and the sealing component are arranged in the shell, the hydraulic transmission mechanism is provided with a reversing control mechanism and a multi-gear control mechanism, a return spring is arranged between the reversing control mechanism and the multi-gear control mechanism to reset the reversing control mechanism, the reversing control mechanism comprises a reversing core body, a combined reversing gear ring and a gear ring bearing, the combined reversing gear ring comprises a guide gear ring and a guide tooth groove, the guide tooth grooves are embedded in the inner wall of the shell, the guide gear ring is embedded on the periphery of the hollow reversing core body, 5 guide ribs which are uniformly distributed at 72 degrees are uniformly distributed on the guide gear ring, the guide ribs are coupled with the shell, an annular groove is formed in the inner side of the reversing core body, and a gear ring roller bearing is arranged in the annular groove and is in movable connection with the central shaft.
2. A hydraulic drive based multiple-range control system according to claim 1, wherein said hydraulic transmission mechanism includes a central shaft and a throttle valve; and a throttle valve is arranged on the central shaft.
3. The hydraulically-driven multi-gear control system is characterized in that the multi-gear control mechanism comprises four multi-gear hydraulic cylinders, a hydraulic cylinder body and an end cover, the four hydraulic cylinders are of disc-shaped structures and are sequentially stacked in an embedding mode, the four hydraulic cylinders comprise three circulating hydraulic cylinders and a deflecting control cylinder, the deflecting control cylinder is located at the lowest end, and three through holes which are uniformly distributed at 120 degrees are formed in the bottom of the deflecting control cylinder.
4. The hydraulic drive-based multi-range control system according to claim 1, wherein the seal assembly comprises an annular combination seal cartridge, an annular positioning seal cartridge, a tooth-type seal and a T-type seal cartridge, the annular combination seal cartridge providing an end seal between the cylinder blocks of the hydraulic cylinder. The annular positioning sealing sleeve is positioned on the seal contacted with the bearing, the tooth-shaped seal is positioned on the seals at the embedded positions of the four hydraulic cylinders, and the T-shaped sealing sleeve is arranged on the bottom sealing surface of the shell.
Technical Field
The invention relates to the field of detection and sampling, in particular to a multi-gear control system based on hydraulic drive.
Background
A Rotary Steerable drilling system (RSS for short) is a Steerable drilling system that performs a steering function while drilling in real time while drilling when a drill string is being rotated, and an RSS hydraulic control system is an essential part for performing accurate and reliable Rotary Steerable drilling.
At present, a hydraulic control system in an RSS rotary steering tool is basically electromagnetically controlled, and the risk of control failure is caused in a stratum with strong geomagnetic force, so that the drilling is greatly dangerous, electronic components are extremely easy to damage and scrap under the condition of high underground temperature, data distortion, abnormal functions, system rush and even the whole RSS system is completely broken down.
Disclosure of Invention
The invention aims to provide a multi-gear control system based on hydraulic drive.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention comprises a shell, a reversing control mechanism, a multi-gear control mechanism, a hydraulic transmission mechanism and a return spring, wherein the shell comprises an upper shell and a lower shell, the hydraulic transmission mechanism and a sealing component are arranged in the shell, the reversing control mechanism and the multi-gear control mechanism are arranged on the hydraulic transmission mechanism, the return spring is arranged between the reversing control mechanism and the multi-gear control mechanism and is used for resetting the reversing control mechanism, the reversing control mechanism comprises a reversing core body, a combined reversing gear ring and a gear ring bearing, the combined reversing gear ring comprises a guide gear ring and a guide tooth groove, the guide tooth groove is embedded in the inner wall of the shell, the guide gear ring is embedded in the periphery of the hollow reversing core body, 5 guide ribs uniformly distributed at 72 degrees are uniformly distributed on the guide gear ring, the guide ribs are coupled with the shell, and an annular groove is arranged on the inner side of the reversing, and a gear ring roller bearing is arranged in the annular groove and is in movable connection with the central shaft.
Further, the hydraulic transmission mechanism includes a center shaft and a throttle valve; and a throttle valve is arranged on the central shaft.
Furthermore, the multi-gear control mechanism comprises four multi-gear hydraulic cylinders, a hydraulic cylinder body and an end cover, the four hydraulic cylinders are of disc-shaped structures and are stacked in an embedding mode sequentially, the four hydraulic cylinders comprise three circulating hydraulic cylinders and a deflecting control cylinder, the deflecting control cylinder is located at the lowest end, and three through holes which are uniformly distributed at 120 degrees are formed in the bottom of the deflecting control cylinder.
Further, the sealing assembly comprises an annular combined sealing sleeve, an annular positioning sealing sleeve, a tooth-shaped seal and a T-shaped sealing sleeve, and the annular combined sealing sleeve is arranged at the end part seal between the cylinder bodies of the hydraulic cylinder. The annular positioning sealing sleeve is positioned on the seal contacted with the bearing, the tooth-shaped seal is positioned on the seals at the embedded positions of the four hydraulic cylinders, and the T-shaped sealing sleeve is arranged on the bottom sealing surface of the shell.
Compared with the prior art, the invention has the following beneficial effects:
the invention realizes mechanization, reliability and simplification of the RSS control system, and the system mechanism of the invention belongs to a pure mechanical structure, is mechanical control, is simple and convenient to control and high in reliability compared with an electronically controlled hydraulic control system, and can accurately realize the control function. In addition, the invention of the mechanism lays a foundation for the subsequent design and research of the RSS rotary guiding tool, prepares for the design and research of the RSS rotary guiding tool and has important significance for the research of the RSS.
Drawings
FIG. 1 is a schematic diagram of a hydraulic drive based multi-gear control system;
① upper shell, ② guide gear ring, ③ reset spring, ④ multi-gear control mechanism end cover, ⑤ lower shell, ⑥ multi-gear control mechanism sleeve, ⑦ multi-gear control cavity, ⑧ multi-gear control mechanism base, ⑨ ring groove type rigid sealing sleeve, ⑩ deflecting hydraulic cylinder,
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be in a manner including, but not limited to, the following examples.
As shown in fig. 1, the hydraulic transmission device comprises a shell, a reversing control mechanism, a multi-gear control mechanism, a hydraulic transmission mechanism and a return spring, wherein the shell comprises an upper shell 1 and a lower shell 5, the hydraulic transmission mechanism and a sealing component are arranged in the shell, the hydraulic transmission mechanism is provided with the reversing control mechanism and the multi-gear control mechanism, the return spring 3 is arranged between the reversing control mechanism and the multi-gear control mechanism to reset the reversing control mechanism, the reversing control mechanism comprises a reversing core body, a combined reversing gear ring and a gear ring bearing 16, the combined reversing gear ring comprises a guide gear ring 2 and a guide gear groove, the guide gear groove is embedded in the inner wall of the shell, the guide gear ring 2 is embedded in the periphery of the hollow reversing core body, 5 guide ribs uniformly distributed at 72 degrees are uniformly distributed on the guide gear ring 2, and the guide ribs are coupled with the shell, an annular groove is formed in the inner side of the reversing core body, and a gear ring roller bearing is arranged in the annular groove and is in movable connection with the central shaft.
The hydraulic transmission mechanism comprises a central shaft 17 and a throttle valve 15, and the throttle valve 15 is arranged on the central shaft 17.
The multi-gear control mechanism comprises four multi-gear hydraulic cylinders, a hydraulic cylinder body and an end cover, the four hydraulic cylinders are of disc-shaped structures and are stacked in an embedding mode, the four hydraulic cylinders comprise three circulating hydraulic cylinders and a deflecting control cylinder, the deflecting control cylinder is located at the lowest end, and three through holes which are uniformly distributed at 120 degrees are formed in the bottom of the deflecting control cylinder.
The sealing assembly comprises an annular combined sealing sleeve, an annular positioning sealing sleeve, a tooth-shaped seal and a T-shaped sealing sleeve, wherein the annular combined sealing sleeve is arranged at the end part seal between the cylinder bodies of the hydraulic cylinder. The annular positioning sealing sleeve is positioned on the seal contacted with the bearing, the tooth-shaped seal is positioned on the seals at the embedded positions of the four hydraulic cylinders, and the T-shaped sealing sleeve is arranged on the bottom sealing surface of the shell.
The working process of the invention is as follows:
when drilling fluid flows through the throttle valve 15 through the central shaft 17, the reversing control mechanism and the central shaft are driven to move downwards to a lower stroke point under the pushing of the drilling fluid pressure, then the drilling fluid moves upwards under the action of the return spring after the pressure is reduced, and the multi-gear section control is realized under the coordination of the multi-gear control mechanism.
The reversing control mechanism drives the reversing control mechanism to move downwards under the throttling action of the throttle valve, and the return spring is arranged between the reversing core body structure and the limiting check ring and is mainly used for resetting the reversing control mechanism.
The whiplash control cylinder of the multi-gear control mechanism is positioned at the lowest end, the bottom of the whiplash control cylinder is provided with three through holes which are uniformly distributed at an angle of 120 degrees, two of the through holes are directly communicated with a shell hydraulic channel, and a cylindrical through pipe is embedded in a third channel and directly extends into the whiplash control cylinder body; the drilling fluid of the vacancy circulating cylinder can only circulate in the cylinder body, one end of the overflow detection cylinder is provided with a through hole communicated with the outer vacancy, and the system is detected to complete a complete stroke through the pressure instant change caused by the overflow of the drilling fluid. The hydraulic cylinder shell is of a cylindrical structure with a base, three through holes which are uniformly distributed at 120 degrees are formed in the bottom end of the hydraulic cylinder shell and are communicated with the lower end shell, the four multi-gear cylinder bodies are assembled in a centralized mode, and the other end of the hydraulic cylinder shell is sealed by a spiral end cover to form a whole.
The hydraulic transmission mechanism in the system comprises a central shaft 17 and a throttle valve 15; the central shaft 17 is a main circulation channel of drilling fluid, and the drilling fluid enters the corresponding multi-gear control cylinder through a central shaft jet hole; the throttle valve 15 is mainly used for throttling drilling fluid so as to generate hydraulic pressure difference to drive the reversing control mechanism and the central shaft to cooperate with the multi-gear control mechanism to realize hydraulic control of the system.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
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