一种对泥浆压力感应的旁通阀

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By designing an intelligent bypass valve, real-time sensing and precise control of mud pressure are achieved using pressure sensors and motor drive modules. This solves the problems of slow response, high operational risk, and insufficient precision of traditional bypass valves, and enables efficient downhole operation control.

CN224515159UActive Publication Date: 2026-07-17BEIJING MONDENAR TECH DEV CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: BEIJING MONDENAR TECH DEV CO LTD
Filing Date: 2025-09-11
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Traditional bypass valves suffer from slow response, high operational risk, insufficient accuracy, and lack of status feedback, making it impossible to achieve a fully closed-loop control system that enables real-time sensing, intelligent decision-making, and precise execution of mud pressure.

Method used

An intelligent bypass valve was designed, comprising a pressure measurement module, a battery module, a motor drive module, and a mud bypass module. The valve collects mud pressure data in real time through a pressure sensor, and the electrical signal controls the motor drive shaft to move the lead screw, thereby achieving precise start and stop of the bypass valve.

Benefits of technology

It achieves a fully closed-loop control system with fast response speed, low operational risk, and high precision, adapting to complex well conditions and improving the safety and reliability of downhole operations.

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Abstract

本实用新型公开一种对泥浆压力感应的旁通阀，用于井下钻铤泥浆高压旁通，设置有压力测量模块、电池模块、电机驱动模块、动力输出模块和泥浆旁通模块，压力测量模块用于感知阀壳内的泥浆压力，电池模块作为电源，电机驱动模块用于转轴旋转，转轴带动泥浆旁通模块的丝杆变为直线运行，泥浆旁通模块内设置阀体、限流环、旁通阀口和直通阀堵，通过阀体的移动改变与限流环的过流面积，以及与直通阀堵的过流面积，决定泥浆是旁通还是直通。本旁通阀利用泥浆压力实时感应发出不同的信号控制电机运行，通过旁通阀口和直通阀口的合理设计，在合适时机启停旁通阀，相对于传统机械式触发的旁通阀具有响应速度快、操作风险低、精度高等优点。

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Claims

1. A bypass valve responsive to mud pressure comprising a valve housing, characterised in that: It also includes a pressure measurement module (1), a battery module (2), a motor drive module (3), a power output module (4), and a mud bypass module (5), all of which are placed inside the valve housing, and mud can flow through the valve housing; The pressure measurement module (1) includes a pressure measurement base (101), in which a pressure sensor (103) and a first slip ring plug (106) are provided. The pressure sensor (103) senses the mud pressure in the valve body and converts it into an electrical signal, which is then transmitted to the control circuit through the first slip ring plug (106). The battery module (2) serves as a power source; The motor drive module (3) includes a motor section (302), a control circuit is provided inside the motor section (302), and the output end of the motor section (302) is connected to the power output module (4); The power output module (4) includes a reducer assembly (402) and a rotating shaft (405). The output end of the motor stub (302) is connected to the reducer assembly (402), and the other end of the reducer assembly (402) is connected to the rotating shaft (405). The mud bypass module (5) includes a lead screw (501), a connecting rod (502), a valve body (506), a flow limiting ring (507), a bypass valve port (509), and a straight-through valve plug (510); one end of the lead screw (501) is threadedly connected to the rotating shaft (405), and the other end is ball-jointed to the connecting rod (502); the end of the connecting rod (502) away from the lead screw (501) is fixedly connected to the valve body (506); The valve body (506) has a flow limiting ring (507) on the side near the connecting rod (502). The flow limiting ring (507) is fixed inside the valve housing. The valve body (506) and the valve housing are slidably connected. The valve housing has a bypass valve port (509) in the sliding stroke section with the valve body (506). The outer wall of the valve body (506) is a variable diameter stepped surface. When the large diameter stepped surface is opposite to the bypass valve port (509), the bypass valve port (509) is blocked. When the small diameter stepped surface is opposite to the bypass valve port (509), the bypass valve port (509) is open. The valve body (506) has a straight-through valve plug (510) on the side away from the connecting rod (502). The straight-through valve plug (510) is fixed inside the valve housing. The straight-through valve plug (510) has a variable diameter plug and a straight-through valve port. The valve body (506) has a flow cavity in the middle. When the valve body (506) moves, the flow area of the flow cavity is changed by the distance between the variable diameter plug and the valve body. The area around the variable diameter plug is the straight-through valve port.

2. The bypass valve according to claim 1, characterized in that: The pressure measuring substrate (101) has rubber wings (102) evenly distributed on its outer surface, and the outer end face of the rubber wings (102) is in contact with the inner wall of the valve body; One end of the pressure measuring base (101) is provided with a blind hole, and a plug socket (104) is provided in the blind hole. One end of the plug socket (104) is provided with a pressure sensor (103), and the other end is provided with a first slip ring plug (106). The pressure measuring substrate (101) has a mud inlet (107) on the side of the blind hole, and the pressure sensor (103) senses the pressure of the mud entering the blind hole.

3. The bypass valve of claim 1, wherein: The battery module (2) includes a socket sleeve (201), a first slip ring socket (202), a plug connector (203), a glass fiber tube (204), a battery inner core (205), a second slip ring plug (206), and a battery outer cylinder (207). The battery outer cylinder (207) is threadedly connected to the pressure measuring base (101) and serves as the outer shell of the battery module (2); The socket sleeve (201) is located at one end of the battery module (2), and a first slip ring socket (202) is fixed inside the socket sleeve (201). The first slip ring socket (202) is connected to the first slip ring plug (106) in the pressure measurement module (1). The end of the socket sleeve (201) away from the first slip ring socket (202) is fixedly connected to the glass fiber tube (204), and the glass fiber tube (204) contains a battery core (205). The end of the glass fiber tube (204) away from the socket sleeve (201) is provided with a plug connector (203), and a second slip ring plug (206) is provided on the plug connector (203).

4. The bypass valve according to claim 1 or 3, characterized in that: The motor drive module (3) also includes a plug (301), one end of which is connected to the outer battery cylinder (207) of the battery module (2), and the other end is connected to the motor short section pressure-resistant cylinder (304). The other end of the motor short section pressure-resistant cylinder (304) is connected to the first threaded sleeve (305). The end of the plug (301) is provided with a second slip ring socket (306), which is connected to the second slip ring plug (206) in the battery module (2); The end of the plug (301) away from the second slip ring socket (306) is provided with a motor short section (302), and the end of the motor short section (302) is provided with a flexible coupling (303).

5. The bypass valve of claim 1, wherein: The power output module (4) also includes a threaded outer cylinder (401) and a valve body fixing seat (407). One end of the threaded outer cylinder (401) is connected to the first threaded sleeve (305) in the motor drive module (3), and the other end is connected to the valve body fixing seat (407). The input end of the reducer assembly (402) is connected to the flexible coupling (303) in the motor drive module (3), and the output end is connected to the bushing (403). The bushing (403) is fixedly connected to the rotating shaft (405). An angular contact ball bearing (404) is provided on the outer side of the rotating shaft (405) near the bushing (403), and a stamped outer ring needle roller bearing (406) is provided on the outer side of the end away from the bushing (403). A rotary sealing ring (408) is provided on one end of the stamped outer ring needle roller bearing (406), and a plug seal is provided on the inner side of the rotary sealing ring (408). The plug seal is in contact with the rotating shaft (405).

6. The bypass valve of claim 1, wherein: The front end of the rotating shaft (405) is provided with a blind hole, and the threaded connection of the blind hole is a lead screw (501). The lead screw (501) is provided with a cavity, and a pressure relief hole is provided on the cavity wall, so that the cavity of the lead screw (501) communicates with the blind hole of the rotating shaft (405).

7. The bypass valve of claim 1, wherein: Two semi-annular clamping sleeves (503) are provided on the outer side of the ball joint of the lead screw (501) and the connecting rod (502). The two clamping sleeves (503) are fastened and screwed onto the external thread of the connecting rod (502). A second threaded sleeve (504) is provided on the outer thread of the clamping sleeve (503). The second threaded sleeve (504) tightens the two clamping sleeves (503).

8. The bypass valve of claim 1, wherein: The mud bypass module (5) also includes a valve body shell (508), which is connected to the valve body fixing seat (407) on the power output module (4); the flow limiting ring (507) is fixedly installed inside the valve body shell (508).

9. The bypass valve of claim 1, wherein: A flange (511) is provided on the end face of the valve body (506) opposite to the straight valve plug (510).