Butterfly valve capable of monitoring torque on line

Abstract

The utility model discloses a butterfly valve capable of monitoring torque on line, and belongs to the field of butterfly valves, the butterfly valve comprises a valve body, a valve rod is rotatably mounted on the inner wall of the valve body, an insert wraps the outer edge of the valve body, the valve rod is fixedly connected with a butterfly plate through a pin, and the top of the valve rod is connected with a fixed torque sensor; a torque signal value received by the torque monitor from the torque sensor mounted on the valve rod is kept within a factory set allowable range, and when the valve working on line is blocked by a medium or some parts of the valve are accidentally damaged, the torque of the valve is changed abnormally and is increased; the torque sensor can send a signal after the torque is increased to the torque detector at the first time, and when the torque exceeds a factory set torque value range, a remote monitoring manager can know the situation that the abnormal torque of the valve rises and changes at the first time, so that a meaningful reference value is provided for later shutdown maintenance.

Description

Technical Field

[0001] This application relates to the field of butterfly valve technology, and in particular to a butterfly valve capable of online torque monitoring. Background Technology

[0002] Conventional butterfly valves only undergo no-load and full-load torque testing at the OEM when the valves are brand new. However, after installation in pipelines, the valve torque changes over time due to accumulated opening and closing operations, making it impossible to monitor these changes online. Many valves currently in operation experience increased opening and closing torque due to age, media contamination, and bearing deformation. Maintenance personnel cannot detect these changes in a timely manner, potentially leading to valve stem breakage and valve malfunction. Currently available conventional butterfly valves lack the function of online monitoring of valve stem torque. Especially when valve torque increases due to various other factors, they fail to provide early warnings or preventative maintenance reminders, potentially resulting in prolonged downtime and significant economic losses for users.

[0003] Currently, conventional butterfly valves on the market do not have the function of online monitoring of valve stem torque. In particular, when the valve torque increases due to various other factors, it cannot provide users with early warning or preventive maintenance prompts, which may ultimately lead to prolonged downtime and significant economic losses for users. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a butterfly valve that can monitor torque online, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a butterfly valve capable of online torque monitoring, comprising a valve body, a valve stem rotatably mounted on the inner wall of the valve body, an insert wrapped around the outer edge of the valve body, a butterfly plate fixedly connected to the valve stem by a pin, a fixed torque sensor connected to the top of the valve stem, an actuator connected to the top of the fixed torque sensor, a bracket mounted on the top of the butterfly plate, and a remotely controlled torque monitoring instrument fixedly connected to the fixed torque sensor via a signal line.

[0006] In a preferred embodiment, a sealing ring is embedded in the inner wall of the butterfly plate, and the inner side of the sealing ring contacts the outer edge of the valve stem. The sealing ring is made of rubber.

[0007] By adopting the above technical solutions, sealing can be guaranteed, ensuring that leakage will not easily occur during actual use and improving the stability of operation.

[0008] In a preferred embodiment, the number of pins is three, and the three pins are evenly distributed on the inner wall of the butterfly plate.

[0009] By adopting the above technical solution, the connection between the valve stem and the butterfly plate can be guaranteed, ensuring that they will not easily loosen after connection and installation.

[0010] In a preferred embodiment, the fixed torque sensor is fixedly installed on the inner wall of the bracket by means of screw connection, and is fixed relative to the actuator.

[0011] By adopting the above technical solution, the bracket can be used to protect the fixed torque sensor, ensuring that the fixed torque sensor is not directly exposed to the outside, thereby ensuring the service life of the fixed torque sensor and preventing collisions with foreign objects.

[0012] In a preferred embodiment, a cover plate is installed at the bottom of the valve body, and the cover plate is fixedly connected to the bottom of the valve body by bolts.

[0013] By adopting the above technical solution, it is possible to seal the opening at the bottom of the valve body, ensuring that foreign objects do not enter the gap between the valve body and the valve stem.

[0014] In a preferred embodiment, the sealing ring is pressed against the left side of the valve body by an insert, and the seal of the valve body is established by the relative compression contact between the sealing ring and the sealing surface of the butterfly plate.

[0015] By adopting the above technical solution, the insert can be used to abut and position the sealing ring, ensuring that it is stably attached to the left side of the valve body and ensuring stability.

[0016] The beneficial effects of this application are:

[0017] 1. This type of butterfly valve with online torque monitoring ensures that the torque signal value received from the torque sensor installed on the valve stem by the torque monitor remains within the factory-set allowable range. When the valve operates online and the torque abnormally increases due to medium stagnation or accidental damage to certain valve parts, the torque sensor can immediately send a signal indicating the increased torque to the torque monitor. When the torque exceeds the factory-set torque value range, the remote monitoring manager can immediately be aware of the abnormal torque increase in the valve, thus providing meaningful reference value for subsequent shutdown maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 For the purposes of this application Figure 1 Enlarged structural diagram at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the torque monitoring device of this application.

[0021] The following are the labels in the diagram: 1. Valve body; 2. Insert; 3. Butterfly plate; 4. Sealing ring; 5. Valve stem; 6. Pin; 7. Actuator; 8. Fixed torque sensor; 9. Torque monitor; 10. Bracket. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0023] Reference Figure 1-3 A butterfly valve capable of online torque monitoring includes a valve body 1, a valve stem 5 rotatably mounted on the inner wall of the valve body 1, an insert 2 wrapped around the outer edge of the valve body 1, a butterfly plate 3 fixedly connected to the valve stem 5 by a pin 6, a fixed torque sensor 8 connected to the top of the valve stem 5, an actuator 7 connected to the top of the fixed torque sensor 8, a bracket 10 mounted on the top of the butterfly plate 3, and a remotely controlled torque monitoring instrument 9 fixedly connected to the fixed torque sensor 8 via a signal line.

[0024] See Figure 1 and Figure 2 The inner wall of the butterfly plate 3 is inlaid with a sealing ring 4. The inner side of the sealing ring 4 is in contact with the outer edge of the valve stem 5. The sealing ring 4 is made of rubber, which ensures sealing performance and prevents leakage during actual use, thereby improving the stability of operation.

[0025] See Figure 1 There are three pins 6, and the three pins 6 are evenly distributed on the inner wall of the butterfly plate 3, which ensures the firmness of the connection between the valve stem 5 and the butterfly plate 3 and ensures that it will not easily loosen after connection and installation.

[0026] See Figure 3 The fixed torque sensor 8 is fixedly installed on the inner wall of the bracket 10 by screw connection and is fixed relative to the actuator 7. The bracket 10 can protect the fixed torque sensor 8, ensuring that the fixed torque sensor 8 is not directly exposed to the outside, thereby ensuring the service life of the fixed torque sensor 8 and preventing collision with foreign objects.

[0027] See Figure 1 and Figure 3A cover plate is installed at the bottom of the valve body 1, and the cover plate is fixedly connected to the bottom of the valve body 1 by bolts, so that it can be used to seal the opening at the bottom of the valve body 1, ensuring that foreign objects will not enter the gap between the valve body 1 and the valve stem 5.

[0028] See Figure 1 and Figure 2 The sealing ring 4 is pressed against the left side of the valve body 1 by the insert 2. The seal of the valve body 1 is established by the relative compression contact between the sealing ring 4 and the sealing surface of the butterfly plate 3. This allows the insert 2 to abut and position the sealing ring 4, ensuring that it is stably attached to the left side of the valve body 1 and ensuring stability.

[0029] Working Principle: The valve stem 5 of the butterfly valve is located at the centerline of the inner cavity of the valve body 1. The butterfly plate 3 is fixed to the valve stem 5 by a pin connection 6. A sealing ring 4 forms a seal with the sealing surface of the butterfly plate 3 on the left side. The sealing ring 4 is pressed against the left side of the valve cavity by an insert 2. The valve seal is established by the relative compression contact between the sealing ring 4 and the sealing surface of the butterfly plate 3. The opening and closing of the valve is driven by the actuator 7 installed on the upper part of the valve. The ±90° rotational torsional force output by the actuator 7 drives the valve stem 5 and ultimately drives the butterfly plate 3 to open and close ±90° through the connection of the pin 6. When the sealing surface of the butterfly plate 3 is in full contact with the sealing ring 4, a seal is established, and the valve is closed; otherwise, the valve is open. The valve stem 5 is responsible for the torque transmission between the actuator 7 and the butterfly plate 3.

[0030] A fixed torque sensor 8 is installed at the connection section of the valve stem 5 between the actuator 7 and the valve body 1. The fixed torque sensor 8 is fixed to the bracket 10 by screws and is fixed relative to the actuator. The valve stem 5 passes through the fixed torque sensor 8 from the center, and the fixed torque sensor 8 is connected to a remotely controlled torque monitoring instrument 9 via a signal line, thereby transmitting the torque value signal.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A butterfly valve capable of monitoring torque online, comprising a valve body (1), characterized in that, A valve stem (5) is rotatably mounted on the inner wall of the valve body (1). An insert (2) is wrapped around the outer edge of the valve body (1). A butterfly plate (3) is fixedly connected to the valve stem (5) by a pin (6). A fixed torque sensor (8) is connected to the top of the valve stem (5). An actuator (7) is connected to the top of the fixed torque sensor (8). A bracket (10) is mounted on the top of the butterfly plate (3). A remotely controlled torque monitoring instrument (9) is fixedly connected to the fixed torque sensor (8) by a signal line.

2. The online torque monitoring butterfly valve according to claim 1, wherein, The inner wall of the butterfly plate (3) is inlaid with a sealing ring (4), the inner side of the sealing ring (4) is in contact with the outer edge of the valve stem (5), and the sealing ring (4) is made of rubber.

3. The online torque monitoring butterfly valve according to claim 1, wherein, The number of pins (6) is three, and the three pins (6) are evenly distributed on the inner wall of the butterfly plate (3).

4. The online torque monitoring butterfly valve according to claim 1, wherein, The fixed torque sensor (8) is fixedly installed on the inner wall of the bracket (10) by means of screw connection and is fixed relative to the actuator (7).

5. A butterfly valve capable of online torque monitoring according to claim 1, characterized in that, The bottom of the valve body (1) is fitted with a cover plate, and the cover plate is fixedly connected to the bottom of the valve body (1) by bolts.

6. The online torque monitoring butterfly valve according to claim 2, wherein, The sealing ring (4) is pressed against the left side of the valve body (1) by the insert (2), and the sealing of the valve body (1) is established by the relative compression contact between the sealing ring (4) and the sealing surface of the butterfly plate (3).

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