A device for detecting the opening degree of a manual valve on a ship

Abstract

The utility model discloses a kind of on-ship manual valve opening-closing degree detection device, including detection mechanism, positioning mechanism and fixed mechanism, the detection mechanism includes valve hand wheel, the round groove of being opened in the valve hand wheel front side, is fixedly connected in the permanent magnet of the round groove inside, is located in the shell of the permanent magnet front side, with the magnetic encoder IC and MCU of shell inner chamber front side wall fixed connection, segment code LCD screen is embedded in the shell front side.In the utility model, when rotating valve hand wheel, magnetic encoder IC in shell is real-time monitored the magnetic field change in front of permanent magnet, then monitoring information is transmitted to MCU, MCU calculates according to self preset algorithm, then reaction is given to segment code LCD screen, so that operator can directly read clear digital opening, through non-contact detection, mechanical wear, transmission idle stroke and other problems, ensure long-term use reliability and adaptability to complex environment adaptability.

Description

Technical Field

[0001] This utility model relates to the field of valve opening and closing degree detection technology, specifically a device for detecting the opening and closing degree of a manual valve on a ship. Background Technology

[0002] Manual valves are control components in pipeline fluid transport systems. They are used to change the cross-sectional area of ​​the passage and the direction of medium flow, and have functions such as guiding, stopping, regulating, throttling, checking back, diverting, or overflowing and relieving pressure. Valves used for fluid control range in nominal diameter from extremely small instrument valves to industrial pipeline valves with diameters up to 10m. Valves can operate according to predetermined requirements under the action of pressure, temperature, or other forms of sensor signals, or they can simply open or close without relying on sensor signals. Valves rely on drive or automatic mechanisms to make the opening and closing parts move up and down, slide, swing, or rotate, thereby changing the size of their flow channel area to achieve their control function.

[0003] To achieve the purpose of detecting valve opening and closing, there are some modification solutions on the market that involve adding encoders or potentiometers. However, these solutions usually require a mechanical hard connection (such as a coupling) with the valve stem / valve handwheel, which is complicated to install and often requires modification of the valve or valve stem. They also have problems such as mechanical wear and transmission backlash, resulting in poor reliability in long-term use, especially in harsh industrial environments with high vibration and humidity. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A device for detecting the opening and closing degree of a manual valve on a ship includes a detection mechanism, a positioning mechanism, and a fixing mechanism. The detection mechanism includes a valve handwheel, a circular groove on the front side of the valve handwheel, a permanent magnet fixed inside the circular groove, a housing on the front side of the permanent magnet, a magnetic encoder IC and an MCU fixed to the front wall of the inner cavity of the housing, and a segment LCD screen embedded on the front side of the housing. The magnetic encoder IC and the segment LCD screen are electrically connected to the MCU. The positioning mechanism includes a lower arc plate detachably installed on the rear side of the housing, an upper arc plate fixed to one end of the lower arc plate, and a threaded rod screwed between the lower arc plate and the upper arc plate. The fixing mechanism includes a curved rod fixed to one side of the housing, a T-shaped plug inserted into the curved rod, and a bolt screwed to one side of the curved rod. The inner end of the bolt is interference-fitted with one side wall of the T-shaped plug.

[0007] By adopting the above technical solution, when the valve handwheel is turned, the magnetic encoder IC placed in the housing monitors the change of the magnetic field in front of the permanent magnet in real time. The monitoring information is then transmitted to the MCU. The MCU calculates according to its own preset algorithm and then reflects it to the segment LCD screen, so that the operator can directly read the clear digital opening degree. Through non-contact detection, problems such as mechanical wear and transmission backlash are eliminated, ensuring long-term reliability and adaptability to complex environments.

[0008] In a preferred embodiment, the present invention can be further configured such that: an adhesive is poured into the inside of the circular groove, and the adhesive is wrapped around the outside of the permanent magnet.

[0009] In a preferred embodiment, the present invention can be further configured such that: a circular opening is provided on the rear side of the housing, and the circular slot, the magnetic encoder IC, and the circular opening are concentrically arranged.

[0010] In a preferred embodiment, the present invention can be further configured such that the segment LCD screen is tilted and electrically connected to an external power supply.

[0011] In a preferred embodiment, the present invention can be further configured such that both the lower arc plate and the upper arc plate are movably fitted to the outside of the valve handwheel, and both are made of elastic metal material.

[0012] In a preferred embodiment, the present invention can be further configured such that the two cranks are laterally symmetrical about the horizontal center plane of the outer casing, and both the cranks and the T-shaped inserts are made of steel.

[0013] In a preferred embodiment, the present invention can be further configured such that: the rear end of the T-shaped insert has multiple through holes, which are equally spaced and arranged in a ring.

[0014] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0015] 1. In this utility model, when the valve handwheel is turned, the magnetic encoder IC placed in the housing monitors the change of the magnetic field in front of the permanent magnet in real time. The monitoring information is then transmitted to the MCU. The MCU calculates according to its own preset algorithm and then responds to the segment LCD screen, so that the operator can directly read the clear digital opening degree. Through non-contact detection, problems such as mechanical wear and transmission backlash are eliminated, ensuring long-term reliability and adaptability to complex environments.

[0016] 2. In this utility model, when installing the outer casing, the lower arc plate cooperates with the upper arc plate to center the outer casing and the valve handwheel, so that the magnetic encoder IC is aligned with the front side of the permanent magnet, thereby achieving the purpose of accurately measuring the magnetic field and ensuring the reliability of the detection data. Attached Figure Description

[0017] Figure 1This is a top view of the overall structure of this utility model;

[0018] Figure 2 This is a rear perspective view of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the testing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram showing the disassembly relationship of the valve handwheel, permanent magnet, and adhesive of this utility model;

[0021] Figure 5 This is a schematic diagram showing the cooperation relationship between the positioning mechanism and the fixing mechanism of this utility model.

[0022] Figure label:

[0023] 100. Testing mechanism; 110. Valve handwheel; 120. Circular groove; 130. Permanent magnet; 140. Housing; 150. Magnetic encoder IC; 160. MCU; 170. Segment LCD screen;

[0024] 200. Positioning mechanism; 210. Lower arc plate; 220. Upper arc plate; 230. Threaded rod;

[0025] 300. Fixing mechanism; 310. Crank rod; 320. T-shaped insert; 330. Bolt;

[0026] 400. Adhesives. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0029] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, a device for detecting the opening and closing degree of a manual valve on a ship.

[0030] Example 1:

[0031] Combination Figure 1-5As shown, the present invention provides a manual valve opening degree detection device for ships, including a detection mechanism 100, a positioning mechanism 200 and a fixing mechanism 300. The detection mechanism 100 includes a valve handwheel 110, a circular groove 120 formed on the front side of the valve handwheel 110, a permanent magnet 130 fixed inside the circular groove 120, a housing 140 disposed on the front side of the permanent magnet 130, a magnetic encoder IC150 and an MCU160 fixed to the front side wall of the inner cavity of the housing 140, and a segment code LCD screen 170 embedded on the front side of the housing 140. The magnetic encoder IC150 and the segment code LCD screen 170 are both electrically connected to the MCU160.

[0032] Positioning mechanism 200, the positioning mechanism 200 includes a lower arc plate 210 detachably installed on the rear side of the housing 140, an upper arc plate 220 fixedly connected to one end of the lower arc plate 210, and a threaded rod 230 screwed between the lower arc plate 210 and the upper arc plate 220.

[0033] The fixing mechanism 300 includes a curved rod 310 fixed to one side of the outer shell 140, a T-shaped plug 320 inserted into the curved rod 310, and a bolt 330 screwed to one side of the curved rod 310. The inner end of the bolt 330 is interference-fitted with one side wall of the T-shaped plug 320.

[0034] Furthermore, the segment LCD screen 170 is tilted and electrically connected to an external power supply. This tilting configuration facilitates reading by the operator.

[0035] Furthermore, both the lower arc plate 210 and the upper arc plate 220 are movably attached to the outside of the valve handwheel 110. Both are made of elastic metal material. This layout design can achieve centering of the magnetic encoder IC150 and the permanent magnet 130, providing conditions for accurate detection of the magnetic field.

[0036] Furthermore, the two cranks 310 are laterally symmetrical about the horizontal center plane of the outer casing 140. Both the cranks 310 and the T-shaped inserts 320 are made of steel, and the use of steel in their construction allows for a stable installation of the outer casing 140.

[0037] Furthermore, the T-shaped insert 320 has multiple through holes at its rear end. These through holes are evenly spaced and arranged in a ring shape, which facilitates the connection between the T-shaped insert 320 and the valve body.

[0038] Example 2:

[0039] Combination Figure 3 and Figure 4As shown, based on Embodiment 1, the inside of the circular groove 120 is filled with adhesive 400, and the adhesive 400 is wrapped around the outside of the permanent magnet 130. The adhesive 400 can improve the installation firmness of the permanent magnet 130.

[0040] Example 3:

[0041] Combination Figure 3 As shown, in the above embodiment, a circular opening is provided on the rear side of the housing 140, and the circular slot 120, the magnetic encoder IC150 and the circular opening are concentrically arranged. This layout design provides conditions for accurate measurement of the magnetic field.

[0042] The working principle and usage process of this utility model are as follows: When this device is put into actual use, the operator rotates the valve handwheel 110, and the permanent magnet 130 also rotates accordingly. The spatial distribution direction of the magnetic field around it (i.e., the direction of the magnetic field lines) will change periodically and continuously. Each degree of rotation of the valve handwheel 110 corresponds to a precise one-degree change in the magnetic field direction. Then, the magnetic encoder IC150 "observes" the change in the magnetic field. The Hall element or magnetoresistive element array inside the magnetic encoder IC150 can sensitively detect the angle of the magnetic field direction passing through its chip surface. It directly converts this continuous, simulated magnetic field angle change into a corresponding electrical signal, which is transmitted to the MCU160 for calculation. The MCU160 has pre-set calibration parameters embedded inside.

[0043] Zero point (0% opening): The original sensor angle value A_min read by MCU160 when the valve is fully closed;

[0044] Full scale (100% opening): The original sensor angle value A_max read by MCU160 when the valve is fully open;

[0045] The MCU160 runs a simple linear mapping algorithm: Current opening percentage = (Current angle original value - A_min) / (A_max - A_min) * 100%. This calculation process is real-time. Every time new data is collected, the opening value is calculated and updated immediately. For valves that require multiple turns to fully open / close, the MCU160 will monitor the "zero crossing" behavior of the angle through the program algorithm, count the number of turns, and incorporate the number of turns into the opening calculation to achieve accurate measurement of the entire stroke. The calculated real-time opening value is then sent to the segment LCD screen 170, and the operator can directly read the clear digital opening on site.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for detecting the opening / closing degree of a manual valve on a ship, characterized in that, include: The detection mechanism (100) includes a valve handwheel (110), a circular groove (120) opened on the front side of the valve handwheel (110), a permanent magnet (130) fixed inside the circular groove (120), a housing (140) disposed on the front side of the permanent magnet (130), a magnetic encoder IC (150) and an MCU (160) fixed to the front side wall of the inner cavity of the housing (140), and a segment code LCD screen (170) embedded on the front side of the housing (140). The magnetic encoder IC (150) and the segment code LCD screen (170) are both electrically connected to the MCU (160). The positioning mechanism (200) includes a lower arc plate (210) detachably mounted on the rear side of the housing (140), an upper arc plate (220) fixedly connected to one end of the lower arc plate (210), and a threaded rod (230) screwed between the lower arc plate (210) and the upper arc plate (220). The fixing mechanism (300) includes a curved rod (310) fixed to one side of the outer shell (140), a T-shaped plug (320) inserted into the curved rod (310), and a bolt (330) screwed to one side of the curved rod (310). The inner end of the bolt (330) is in interference fit with one side wall of the T-shaped plug (320).

2. The device for detecting the opening / closing degree of a manual valve on a ship according to claim 1, characterized in that, The circular groove (120) is filled with adhesive (400), which is wrapped around the outside of the permanent magnet (130).

3. The device for detecting the opening and closing degree of a manual valve on a ship according to claim 1, characterized in that, The outer casing (140) has a circular opening on its rear side, and the circular slot (120), magnetic encoder IC (150) and the circular opening are concentrically arranged.

4. The device for detecting the opening and closing degree of a manual valve on a ship according to claim 1, characterized in that, The segment LCD screen (170) is tilted and is electrically connected to an external power supply.

5. The device for detecting the opening and closing degree of a manual valve on a ship according to claim 1, characterized in that, The lower arc plate (210) and the upper arc plate (220) are both movably attached to the outside of the valve handwheel (110), and both are made of elastic metal material.

6. The device for detecting the opening / closing degree of a manual valve on a ship according to claim 1, characterized in that, The two cranks (310) are laterally symmetrical about the horizontal center plane of the outer shell (140), and both the cranks (310) and the T-shaped inserts (320) are made of steel.

7. The device for detecting the opening and closing degree of a manual valve on a ship according to claim 1, characterized in that, The T-shaped insert (320) has multiple through holes at its rear end, which are evenly spaced and arranged in a ring.

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