A quick-opening butterfly valve for LNG ship pipelines

Abstract

This utility model discloses a quick-opening and closing butterfly valve for LNG ship pipelines, including a butterfly valve body and a handwheel installed on one side of the butterfly valve body. The handwheel includes a wheel body and a connecting shaft fixed in the middle of the wheel body. An inner opening is provided in the middle of the wheel body, and a quick-lubricating mechanism is provided in the inner opening. The quick-lubricating mechanism includes a squeeze-type lubricating fluid storage container, an inlet channel, and a diverter column. The squeeze-type lubricating fluid storage container includes a pressure plate and a rubber tube fixed inside the pressure plate. A drain port is provided at the inner end of the rubber tube. An inlet port for use with the drain port is provided in the middle of the inner opening. The inlet channel is opened inside the connecting shaft. The diverter column is fixed to the inner end of the connecting shaft. The diverter column includes a column body with a liquid accumulation groove at the inner end and four sets of drainage channels evenly opened in the column body. An annular drainage groove is provided on the outer surface of the diverter column. The quick-lubricating mechanism designed in this utility model can achieve the purpose of rapid lubrication at the connection between the handwheel and the valve body.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a quick-opening and closing butterfly valve for LNG ship pipelines. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by its closing element (valve disc or butterfly plate) being a disc that rotates around a valve shaft to open and close. Butterfly valves can control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. In pipelines, they primarily function as shut-off and throttling devices. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation. Butterfly valves are also used on pipelines of LNG ships to control the flow of liquefied natural gas. There are various types of butterfly valves, including handwheel-type butterfly valves. Handwheel-type butterfly valves are opened and closed manually by the operator turning the handwheel.

[0003] However, existing handwheel-type butterfly valves used in LNG ship pipelines have the following problems during operation: Because LNG ships sail on the sea for extended periods, the high humidity at sea level exposes the handwheel-type butterfly valves to a high-humidity environment. Over time, the handwheel may rust, leading to blockages during opening and closing. Conventional lubrication of the connection between the handwheel and the butterfly valve is used, but the lubricant has difficulty quickly reaching the inner part of the connection, resulting in ineffective lubrication and affecting the efficiency of opening and closing operations. Therefore, a corresponding technical solution needs to be designed to address these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-opening and closing butterfly valve for LNG ship pipelines. It solves the problem that because LNG ships sail on the sea surface for a long time, the water vapor on the sea surface is high, and the handwheel butterfly valve is exposed to a high humidity environment. Over time, the handwheel of the handwheel butterfly valve may rust, causing it to become blocked. The conventional method of lubricating the connection between the handwheel and the butterfly valve is to treat this problem. However, the lubricant is difficult to quickly enter the inner side of the connection between the handwheel and the butterfly valve, and the lubrication effect is not ideal, which affects the efficiency of opening and closing operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-opening and closing butterfly valve for LNG ship pipelines, comprising a butterfly valve body and a handwheel installed on one side of the butterfly valve body. The handwheel includes a wheel body and a connecting shaft fixed in the middle of the wheel body. An inner opening is provided in the middle of the wheel body, and a lubricating fluid quick-introduction mechanism is provided in the inner opening. The lubricating fluid quick-introduction mechanism includes a squeeze-type lubricating fluid storage container, an introduction cavity, and a diversion column. The squeeze-type lubricating fluid storage container includes a pressure plate and a rubber tube fixed inside the pressure plate. A drain port is provided at the inner end of the rubber tube. An inlet port for use with the drain port is provided in the middle of the inner opening. The introduction cavity is opened inside the connecting shaft. The diversion column is fixed to the inner end of the connecting shaft. The diversion column includes a column body with a liquid accumulation groove at the inner end and four sets of drainage cavities evenly opened in the column body. An annular drainage groove is opened on the outer surface of the diversion column. The outer ends of the four sets of drainage cavities are all located in the annular drainage groove and are connected to each other.

[0006] In a preferred embodiment of this utility model, the surface of the rubber tube is formed with several sets of annular extrusion grooves, and the several sets of annular extrusion grooves are distributed in a stacked manner.

[0007] In a preferred embodiment of this utility model, an iron ring is fitted into the inner end of the rubber tube, and four sets of magnetic blocks are evenly distributed on the inner wall of the inner fitting, with the iron ring adsorbed onto the magnetic blocks.

[0008] In a preferred embodiment of this utility model, the inner diameter of the inlet cavity is smaller than the diameter of the inlet and outlet, and the inner end of the inlet cavity is correspondingly distributed with the liquid accumulation tank.

[0009] In a preferred embodiment of this utility model, the annular drainage groove is located at the connection between the diverter column and the butterfly valve body, and the annular drainage groove has an inwardly concave annular structure.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model improves the existing handwheel butterfly valve structure by designing a lubricant quick-introduction mechanism on the handwheel, which can realize the rapid introduction and lubrication of lubricant. Moreover, this lubrication introduction method is aimed at the connection between the handwheel shaft and the valve body, which can greatly improve the lubrication effect of the handwheel and improve the efficiency of opening and closing operations.

[0012] 2. The lubricant rapid introduction mechanism designed in this utility model can achieve the purpose of rapid lubrication at the connection between the handwheel and the valve body. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention;

[0014] Figure 2 This is a structural diagram of the handwheel described in this utility model;

[0015] Figure 3 This is a structural diagram of the extrusion-type lubricant storage container of this utility model;

[0016] Figure 4 This is a structural diagram of the diversion column described in this utility model.

[0017] In the diagram: 1. Butterfly valve body; 2. Wheel body; 3. Connecting shaft; 4. Inner port; 5. Squeeze-type lubricant storage container; 6. Inlet cavity; 7. Diverter column; 8. Pressure plate; 9. Rubber tube; 10. Drain port; 11. Inlet port; 12. Liquid accumulation tank; 13. Column; 14. Drainage cavity; 15. Annular drainage groove; 16. Annular squeezing groove; 17. Iron ring; 18. Magnetic block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution: a quick-opening and closing butterfly valve for LNG ship pipelines, including a butterfly valve body 1 and a handwheel installed on one side of the butterfly valve body 1. The handwheel includes a wheel body 2 and a connecting shaft 3 fixed in the middle of the wheel body 2. An inner opening 4 is provided in the middle of the wheel body 2, and a lubricating fluid quick-introduction mechanism is provided in the inner opening 4. The lubricating fluid quick-introduction mechanism includes a squeeze-type lubricating fluid storage container 5, an introduction cavity 6, and a diversion column 7. The squeeze-type lubricating fluid storage container 5 includes a pressure plate 8 and a fixing plate 8. A rubber tube 9 has a drain port 10 at its inner end and an inlet port 11 for use with the drain port 10 at the middle of the inner end 4. An inlet channel 6 is opened inside the connecting shaft 3. A diverter column 7 is fixed to the inner end of the connecting shaft 3. The diverter column 7 includes a column body 13 with a liquid accumulation groove 12 at its inner end and four sets of drainage channels 14 evenly opened in the column body 13. An annular drainage groove 15 is opened on the outer surface of the diverter column 7. The outer ends of the four sets of drainage channels 14 are all located in the annular drainage groove 15 and the two are connected.

[0020] Further improvements, such as Figure 3 As shown, the surface of the rubber tube 9 is formed with several sets of annular extrusion grooves 16. The several sets of annular extrusion grooves 16 are distributed in a stacked manner to facilitate extrusion and squeeze out the internal lubricant.

[0021] Further improvements, such as Figure 3 As shown, an iron ring 17 is fitted into the inner end of the rubber tube 9, and four sets of magnetic blocks 18 are evenly distributed on the inner wall of the inner fitting 4. The iron ring 17 is attracted to the magnetic blocks 18. By attracting the iron ring 17 to the magnetic blocks 18, the purpose of fixing the extrusion-type lubricant storage container 5 can be achieved.

[0022] Further improvements, such as Figure 2 As shown, the inner diameter of the inlet channel 6 is smaller than the diameter of the inlet port 11 and the outlet port 10. The inner end of the inlet channel 6 is correspondingly distributed with the liquid accumulation tank 12, which facilitates the rapid introduction of lubricating fluid.

[0023] Specifically, the annular drainage groove 15 is located at the connection between the diverter column 7 and the butterfly valve body 1. The annular drainage groove 15 has a concave annular structure. This design facilitates the rapid introduction of lubricating fluid into the annular drainage groove 15 and lubrication of the connection between the handwheel and the butterfly valve body 1.

[0024] In use: When the handwheel of the butterfly valve becomes blocked and requires lubrication, the operator takes out the squeeze-type lubricant storage container 5 and introduces the lubricant into the rubber tube 9 through the drain port 10. Then, the squeeze-type lubricant storage container 5 is quickly inserted into the inner socket 4. The iron ring 17 is attracted by the magnetic block 18, which can fix the squeeze-type lubricant storage container 5. Then, the operator applies pressure to the pressure plate 8 and the lubricant in the rubber tube 9 is sprayed out from the drain port 10. The lubricant enters the liquid accumulation tank 12 through the inlet channel 6 and is divided into the annular drainage groove 15 through the four sets of drainage channels 14, so as to quickly lubricate the connection between the butterfly valve body 1 and the handwheel.

[0025] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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.

[0026] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-opening butterfly valve for LNG ship pipelines, comprising a butterfly valve body (1) and a handwheel installed on one side of the butterfly valve body (1), characterized in that: The handwheel includes a wheel body (2) and a connecting shaft (3) fixed in the middle of the wheel body (2). An inner opening (4) is provided in the middle of the wheel body (2). A lubricating fluid rapid introduction mechanism is provided in the inner opening (4). The lubricating fluid rapid introduction mechanism includes a squeeze-type lubricating fluid storage container (5), an introduction channel (6), and a diversion column (7). The squeeze-type lubricating fluid storage container (5) includes a pressure plate (8) and a rubber tube (9) fixed inside the pressure plate (8). A drain port (10) is provided at the inner end of the rubber tube (9). The inner opening (4) The middle part of the ) is provided with an inlet (11) for use with the drain port (10). The inlet channel (6) is opened inside the connecting shaft (3). The diverting column (7) is fixed to the inner end of the connecting shaft (3). The diverting column (7) includes a column body (13) with a liquid accumulation groove (12) at the inner end and four sets of drainage channels (14) evenly opened in the column body (13). The outer surface of the diverting column (7) is provided with an annular drainage groove (15). The outer ends of the four sets of drainage channels (14) are all located in the annular drainage groove (15) and the two are connected.

2. The quick-opening and closing butterfly valve for LNG ship pipelines according to claim 1, characterized in that: The surface of the rubber tube (9) is formed with several sets of annular extrusion grooves (16), and the several sets of annular extrusion grooves (16) are distributed in a stacked manner.

3. A quick-opening and closing butterfly valve for LNG ship pipelines according to claim 2, characterized in that: The inner end of the rubber tube (9) is fitted with an iron ring (17), and four sets of magnetic blocks (18) are evenly distributed on the inner wall of the inner inlet (4). The iron ring (17) is attracted to the magnetic blocks (18).

4. A quick-opening and closing butterfly valve for LNG ship pipelines according to claim 1, characterized in that: The inner diameter of the inlet channel (6) is smaller than the diameter of the inlet port (11) and the outlet port (10), and the inner end of the inlet channel (6) is distributed correspondingly to the liquid accumulation tank (12).

5. A quick-opening and closing butterfly valve for LNG ship pipelines according to claim 1, characterized in that: The annular drainage groove (15) is located at the connection between the diversion column (7) and the butterfly valve body (1), and the annular drainage groove (15) has an inwardly concave annular structure.

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