Butterfly plate structure of large-diameter steel welding butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a butterfly plate structure of a large-diameter steel welding butterfly valve, which solves the problems in the background technology, and comprises a main plate, a back plate, a shaft seat, an inclined rib plate and a supporting rib plate, the shaft seat is connected with the main plate and the inclined rib plate, the supporting rib plate is positioned between the main plate and the back plate, and the inclined rib plate is connected with the supporting rib plate. The inclined rib plate is used for connecting the shaft seat and the back plate, the shaft seat is provided with a welding port, the welding port comprises a main plate port and an inclined rib plate port, and the main plate port and the inclined rib plate port are connected with the main plate and the inclined rib plate respectively. The two sides of the shaft seat are respectively welded with the main plate and the inclined rib plate, the inclined rib plate and the back plate, and the two ends of the supporting rib plate are respectively welded with the back plate and the main plate through at least one linear welding seam. The problems that a large-diameter steel welding butterfly valve and a butterfly plate have many and miscellaneous welding seams, local welding stress is concentrated, and machining efficiency is low are solved, and the overall welding performance and production efficiency of the butterfly plate are improved.

Description

Technical Field

[0001] This utility model belongs to the field of butterfly valve technology, specifically a butterfly plate structure for a large-diameter steel welded butterfly valve. Background Technology

[0002] Butterfly valves are widely used in various industries as the most commonly used pipeline equipment. With the development of the water conservancy and hydropower industry, the diameter of butterfly valves is getting larger and the pressure is getting higher. The current integral casting butterfly plate process can no longer meet the size and specifications of ultra-large diameter butterfly valves, and steel plate welding type is usually adopted.

[0003] When butterfly valve components are welded together, numerous weld seams are generated. If the structural design is inadequate, stress concentration during welding can easily occur, reducing structural strength, fatigue strength, and even causing tearing, thus affecting structural stability. Furthermore, due to the thick plate material and large welding filler volume of large-diameter butterfly valves, and the irregular shapes of the components, the weld seam stroke is irregular. Conventional structural designs involve a large amount of welding work and are difficult to automate, affecting production efficiency. Therefore, we propose a butterfly valve butterfly plate structure for large-diameter steel welded butterfly valves. Utility Model Content

[0004] To solve the above problems, this utility model provides the following technical solution: a butterfly plate structure for a large-diameter steel welded butterfly valve, including a main plate, a back plate, a shaft seat, an inclined rib plate, and a supporting rib plate. The shaft seat is connected to the main plate and the inclined rib plate. The supporting rib plate is located between the main plate and the back plate. The inclined rib plate is used to connect the shaft seat and the back plate. The shaft seat has a welding port.

[0005] Furthermore, the welding port includes a motherboard port and a rib plate port, which are respectively connected to the motherboard and the rib plate.

[0006] Furthermore, the two sides of the bearing seat are respectively welded to the main board and the inclined stiffener, the inclined stiffener is respectively welded to the back plate, and the two ends of the support stiffener are respectively welded to the back plate and the main board through at least one straight weld.

[0007] Furthermore, the butterfly plate has a symmetrical structure.

[0008] Furthermore, the bearing seat adopts an integral casting structure, and the flow surface of the bearing seat is smooth and streamlined.

[0009] Furthermore, the motherboard is a non-circular structure composed of several motherboard units, some of which are integrally cast with the bearing.

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

[0011] 1. The butterfly plate components are simplified, all parts are symmetrically arranged and are not affected by the eccentricity of the butterfly valve, which shortens the material forming process time.

[0012] 2. The bearing seat adopts an integral casting type, and the flow surface can be designed as a smooth streamline, which reduces the water blocking area and lowers the flow resistance coefficient.

[0013] 3. The main board is designed as a non-circular shape, with some parts of the main board and the bearing seat cast as one piece, reducing the number of welds required to weld the main board of a large-diameter butterfly valve into a complete circle.

[0014] 4. The bearing seat has its own welding ports with the main board and the inclined stiffener plate, which avoids the phenomenon of overlapping and crossing of welds in traditional butterfly plates, and effectively avoids local deformation and stress concentration during welding.

[0015] 5. Compared with traditional butterfly valves, it greatly reduces the amount of welding work.

[0016] 6. All weld strokes are linear, avoiding irregular weld strokes, making the welding of large-diameter butterfly plates suitable for automatic welding and improving processing efficiency. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Fig. 1 This is a front view of the overall structure of this utility model;

[0019] Fig. 2 This is a three-dimensional structural diagram of the bearing seat portion of this utility model;

[0020] In the diagram: 1. Shaft seat; 2. Diagonal stiffener; 3. Main plate; 4. Back plate; 5. Support stiffener. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figs. 1-2 As shown, this utility model includes a main board 3, a back plate 4, a bearing seat 1, a diagonal rib plate 2, and a support rib plate 5. The bearing seat 1 is connected to the main board 3 and the diagonal rib plate 5. The support rib plate 5 is located between the main board 3 and the back plate 4. The diagonal rib plate 5 is used to connect the bearing seat 1 and the back plate 4. The bearing seat 1 has a welding port.

[0023] The welding ports include the main board port and the rib plate port. The main board port and the rib plate port are connected to the main board 3 and the rib plate 5 respectively, which avoids the phenomenon of weld overlap and intersection in traditional butterfly plates, and effectively avoids local deformation and stress concentration during welding.

[0024] The two sides of the bearing seat 1 are respectively connected to the main plate 3 and the inclined stiffener 2, the inclined stiffener 2 is connected to the back plate 4, and the two ends of the support stiffener 5 are respectively connected to the back plate 4 and the main plate 3. They are respectively welded together by at least one straight weld seam, which avoids irregular weld seam strokes, makes the welding of large-diameter butterfly plates suitable for automatic welding, and improves processing efficiency.

[0025] The butterfly plate has a symmetrical structure and is not affected by the eccentricity of the butterfly valve, which shortens the time of the material forming process.

[0026] The bearing seat 1 adopts an integral casting structure. The flow surface of the bearing seat 1 is smooth and streamlined, reducing the water blocking area and lowering the flow resistance coefficient.

[0027] Main board 3 is a non-circular type composed of several main board units. Some of the main board units and the bearing seat 1 are integrally cast structures, which reduces the number of welds required to weld the main board of a large-diameter butterfly valve into a circle.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A butterfly plate structure for a large-diameter steel welded butterfly valve, characterized in that: It includes a main board (3), a back plate (4), a bearing seat (1), a diagonal rib plate (2), and a support rib plate (5). The bearing seat (1) is connected to the main board (3) and the diagonal rib plate (2). The support rib plate (5) is located between the main board (3) and the back plate (4). The diagonal rib plate (2) is used to connect the bearing seat (1) and the back plate (4). The bearing seat (1) has a welding port.

2. The butterfly plate structure of a large-diameter steel welded butterfly valve according to claim 1, characterized in that: The welding port includes a main board port and a rib plate port, which are connected to the main board (3) and the rib plate (2) respectively.

3. The butterfly plate structure of a large-diameter steel welded butterfly valve according to claim 1 or 2, characterized in that: The two sides of the bearing seat (1) are respectively welded to the main plate (3) and the inclined stiffener (2), the inclined stiffener (2) is respectively welded to the back plate (4), and the two ends of the support stiffener (5) are respectively welded to the back plate (4) and the main plate (3) by at least one straight weld.

4. The butterfly plate structure of a large-diameter steel welded butterfly valve according to claim 1, characterized in that: The butterfly plate has a symmetrical structure.

5. The butterfly plate structure of a large-diameter steel welded butterfly valve according to claim 1, characterized in that: The bearing seat (1) adopts an integral casting structure, and the flow surface of the bearing seat (1) is smooth and streamlined.

6. The butterfly plate structure of a large-diameter steel welded butterfly valve according to claim 1, characterized in that: The motherboard (3) is a non-circular type composed of several motherboard units, some of which are integrally cast with the bearing (1).

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