Splicing type large-diameter flange

Abstract

The utility model relates to the technical field of machinery, in particular to a splicing type large-diameter flange which comprises at least two arc-shaped section disc bodies, a plurality of bolt holes are formed in the arc-shaped section disc bodies, a connecting structure is arranged between every two adjacent arc-shaped section disc bodies, and the arc-shaped section disc bodies are connected through the connecting structures to form a flange disc body. Each connecting structure comprises an inserting groove formed in one side of the corresponding arc-shaped section disc body and an inserting piece fixed to the other side of the corresponding arc-shaped section disc body, and the inserting grooves and the inserting pieces of the adjacent arc-shaped section disc bodies are connected and matched. At least one inserting hole communicated with the inserting groove is formed in the arc-shaped section disc body, the inserting piece comprises an inserting block and at least one clamping piece, the clamping piece is fixed to the inserting block, and the clamping piece is connected and matched with the inserting hole. According to the utility model, a detachable connection mode is adopted, so that the flange plate sections are convenient to splice and maintain, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a spliced ​​large-diameter flange. Background Art

[0002] Flange, also called flange flange or flange, is a part that connects pipes to each other. It is used to connect pipe ends, and is also used to connect equipment inlets and outlets or structures. Flange connection is an important connection method for pipeline construction. Flange connection is easy to use and can withstand greater pressure. It is widely used in industrial pipelines.

[0003] When connecting some large pipelines or large equipment, when the flange diameter exceeds the rolled width of the steel plate, direct rolling or forging may not meet the manufacturing requirements of large-diameter flanges. It is necessary to splice multiple middle plates into one to make a large-diameter flange that meets the required size. However, the existing spliced ​​flanges are welded by flange splicing blocks. Although it ensures the overall strength and sealing performance of the flange to a certain extent, once the flange is partially damaged during long-term operation or needs maintenance and update, it is necessary to cut the damaged part and then weld a flange splicing block, which wastes time, or the entire flange needs to be dismantled and replaced, which causes unnecessary waste of resources and increases maintenance costs.

[0004] The prior art also uses bolt connections to improve the convenience of assembly and disassembly, but in actual operation, inconveniences may occur, especially when the bolts are rusted and the nuts are separated from the screws, making disassembly more time-consuming and laborious. Utility Model Content

[0005] In view of this, the utility model aims to solve the shortcomings of the prior art and proposes a spliced ​​large-diameter flange, which aims to abandon the traditional welding or bolt connection method and adopt a detachable plug-in method to facilitate the splicing of flange segments and facilitate maintenance, thereby reducing maintenance costs.

[0006] The utility model provides a spliced ​​large-diameter flange, comprising at least two arc-shaped segment discs, a plurality of bolt holes are opened on the arc-shaped segment discs, a connecting structure is provided between two adjacent arc-shaped segment discs, and a plurality of the arc-shaped segment discs are connected through the connecting structure to form a flange disc;

[0007] The connection structure includes a slot opened on one side of the arc segment disc body and a connector fixed on the other side of the arc segment disc body, and the adjacent slots and connectors are connected and matched;

[0008] The arc segment disc body is provided with at least one plug hole connected with the slot, the plug connector comprises a plug block and at least one clamping member, the clamping member is fixed on the plug block, and the clamping member is connected and matched with the plug hole.

[0009] In some embodiments of the present application, the socket is a through hole, and two of the sockets are provided, the two sockets are opened opposite to each other along the axial direction of the flange body, and two of the clamping parts are provided, and each of the clamping parts is respectively clamped in one of the sockets.

[0010] In some embodiments of the present application, the clamping member includes a first connecting rod and a second connecting rod connected by a first spring, the first spring is sleeved on the first connecting rod, and one end is fixed on the plug block, the other end of the first spring is fixed to the second connecting rod, the second connecting rod is sleeved outside the first spring, and the second connecting rod is connected and cooperated with the socket.

[0011] In some embodiments of the present application, the second connecting rod includes a hollow rod and a solid rod, one end of the hollow rod is an open structure, and the other end is a closed structure, the hollow rod is sleeved outside the spring and fixedly connected to the spring inside, and the solid rod is fixedly connected to one end of the hollow rod closed structure.

[0012] In some embodiments of the present application, the clamping member is connected to the plug block via a second spring, one end of the second spring is fixedly connected to the plug block, and the other end of the second spring is fixedly connected to the open end of the second connecting rod.

[0013] In some embodiments of the present application, a sealing gasket is provided at one end of the arc segment disc body having a slot.

[0014] In some embodiments of the present application, grooves are provided on the outer side of the arc segment disc body, and the grooves of all the arc segment disc bodies are connected to form an annular groove, and a flexible pressure ring is provided in the annular groove.

[0015] In some embodiments of the present application, the surface of the arc segment disc body is coated with a corrosion-resistant layer.

[0016] In some embodiments of the present application, the corrosion-resistant layer is a zinc-nickel alloy coating.

[0017] The utility model provides a spliced ​​large-diameter flange, which can achieve basic connection between adjacent segments of the disk body by tightly fitting the plug-in piece and the slot; the stability between the adjacent segments of the disk body is further enhanced by the matching connection of the clamping piece and the socket, and the plug-in piece is prevented from falling off from the slot; the clamping piece is provided with a first connecting rod, a first spring and a second connecting rod, and the splicing of the flange can be achieved without the need for other structural tools; the setting of the sealing gasket can provide an effective sealing effect when the adjacent segments of the disk body are tightly fitted to prevent leakage of the medium; the setting of the flexible pressure ring can enhance the overall rigidity of the flange, and ensure the tightness and stability of the direct connection of the flange segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structural diagram of the spliced ​​large-diameter flange provided in the embodiment of the utility model;

[0019] Figure 2 A structural diagram of an arc segment disc body provided with an insert block at one end of the embodiment of the utility model;

[0020] Figure 3 A structural diagram of a groove provided at the other end of the arc-shaped disc body according to an embodiment of the utility model;

[0021] Figure 4 A structural diagram of an insert block for a spliced ​​large-diameter flange provided in an embodiment of the utility model;

[0022] Figure 5 A schematic diagram of the structure of connecting adjacent arc-shaped disc segments provided in an embodiment of the utility model;

[0023] Figure 6 A flange structure diagram of four arc-shaped segment disk bodies spliced ​​together provided in an embodiment of the utility model.

[0024] Wherein: 100, flange body; 200, arc segment body; 201, bolt hole; 210, sealing gasket; 220, flexible pressure ring; 300, plug-in; 310, plug-in block; 311, second spring; 320, snap-on; 321, first connecting rod; 322, first spring; 323, second connecting rod; 3231, hollow rod; 3232, solid rod; 400, slot; 410, jack. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] like Figure 1 As shown, the utility model provides a spliced ​​large-diameter flange, which is spliced ​​by at least two arc-shaped segment discs 200. Specifically, each arc-shaped segment disc 200 is made of high-strength alloy steel to ensure the strength and stability of the overall structure. A plurality of bolt holes 201 are evenly distributed on the arc-shaped segment disc 200 for connecting with corresponding pipes or equipment through bolts.

[0030] like Figure 2-4As shown, adjacent arc segment disc bodies 200 are connected by a connection structure, which includes a slot 400 and a connector 300. The slot 400 is provided on one side of each arc segment disc body 200, and the connector 300 is fixed on the other side of the corresponding arc segment disc body 200. The shape and size of the slot 400 match the connector 300 to ensure the precise docking between adjacent arc segment disc bodies 200. The arc segment disc body 200 is provided with a plug hole 410 connected to the slot 400, and the plug hole 410 is provided along the axial direction of the flange disc body 100; the connector 300 includes an insert block 310 and a clamping member 320, and the clamping member 320 is connected to the insert block 310 and can be inserted into the plug hole 410 of the slot 400. The insert block 310 is tightly fitted into the slot 400 to achieve basic connection between adjacent segments of the disk body; and the clamping member 320 further enhances the stability between adjacent segments of the disk body to prevent loosening or dislocation caused by uneven force.

[0031] In some embodiments of the present application, the jack 410 is designed as two through holes, which are arranged oppositely along the axial direction of the flange body 100. Accordingly, the clamping member 320 is also provided in two pieces, which are respectively embedded in the two jacks 410 to form a double-point locking, further improving the reliability of the connection.

[0032] like Figure 5 As shown, the specific structure of the clamping member 320 includes a first connecting rod 321 and a second connecting rod 323 connected by a first spring 322. The first connecting rod 321 is fixedly connected to the plug block 310. The first spring 322 is sleeved on the first connecting rod 321, and one end is fixed to the plug block 310, and the other end is connected to the second connecting rod 323. The second connecting rod 323 is sleeved outside the first spring 322. The first connecting rod 321 limits the first spring 322 so that the second connecting rod 323 can be flexibly extended and retracted along the axial direction of the flange body 100. When splicing the arc segment body 200, the second connecting rod 323 is pressed toward the plug block 310 so that the plug-in 300 is placed in the slot 400, and then the plug-in 300 is pushed to move into the slot 400 until the second connecting rod 323 is inserted into the plug hole 410. After the second connecting rod 323 is inserted into the plug hole 410, the first spring 322 is in a restored or slightly compressed state. When the connected arc segment disc body 200 needs to be disassembled, the second connecting rod 323 is pressed from the insertion hole 410, and the arc segment disc body 200 provided with the plug connector 300 is dragged to complete the disassembly. It should be noted that the second connecting rod 323 is inserted into the insertion hole 410 and does not extend out of the insertion hole 410, so as to avoid unstable clamping of the clamping member 320 and the insertion hole 410, or external objects accidentally pressing against the flange to cause damage to the clamping member 320.

[0033] In some embodiments of the present application, the second connecting rod 323 is a combined structure, including a hollow rod 3231 and a solid rod 3232. The hollow rod 3231 is sleeved on the outside of the first spring 322 and is fixedly connected to the first spring 322 inside. The solid rod 3232 is fixed to the closed end of the hollow rod 3231. By pressing the solid rod 3232, the hollow rod 3231 is driven to move in the direction of the wire plug block 310.

[0034] To further ensure the stability of the connection of the arc segment disc 200, in some embodiments of the present application, the plug block 310 and the second connecting rod 323 are further connected with a second spring 311, one end of the second spring 311 is fixed to the plug block 310, and the other end is directly connected to the second connecting rod 323, such as the second spring 311 is sleeved on the second connecting rod 323, one end of which is fixed to the plug block 310, and the other end is fixed to the end of the second connecting rod 323 away from the plug block 310. Alternatively, one end of the second spring 311 can be fixed to the plug block 310, and the other end can be connected to the end of the second connecting rod 323 close to the plug block 310, such as Figure 5 shown.

[0035] like Figure 4 As shown, in some embodiments of the present application, in order to ensure the sealing performance of the spliced ​​large-diameter flange during use, a sealing gasket 210 is particularly provided at the connection of the arc segment disc body 200. The sealing gasket 210 is provided at one end of the arc segment disc body 200 where the groove is provided, and is made of highly elastic and high-temperature resistant nitrile rubber, which can provide an effective sealing effect when adjacent segment disc bodies are closely fitted to prevent leakage of the medium.

[0036] In addition, to prevent the adjacent arc segment discs 200 from being misaligned, to ensure that the top surfaces of each arc segment disc 200 are located on the same plane, and the bottom surfaces of each arc segment disc 200 are also located on the same plane, to ensure the stability of the connection, a groove is also provided on the outside of each arc segment disc 200. When all arc segment discs 200 are spliced, these grooves will form a continuous annular groove. A flexible pressure ring 220 is provided in the annular groove. The pressure ring is made of wear-resistant and corrosion-resistant stainless steel material, which can not only enhance the overall rigidity of the flange, but also play a good pre-tightening role when the flange is connected to the pipeline or other equipment, ensuring the tightness and stability of the connection.

[0037] It should be noted that, in some embodiments of the present application, the number of arc segment discs 200 is adjusted to three, four or more (eg Figure 6 As shown in the figure, the flange body 200 can be connected to a plurality of pipes of different diameters. The surface of all arc-shaped disc bodies 200 is coated with a zinc-nickel alloy coating as a corrosion-resistant layer. The zinc-nickel alloy coating has excellent corrosion resistance, wear resistance and adhesion, and can effectively protect the flange body from various corrosion factors in the working environment, significantly extending its service life.

[0038] In summary, the present embodiment provides a spliced ​​large-diameter flange. When the flange is spliced, the second connecting rod 323 of the clamping piece 320 of one of the arc segment disk bodies 200 is pressed, the first spring 322 and the second spring 311 are compressed, and the second connecting rod 323 moves toward the plug block 310, and the plug block 310 and the clamping piece 320 are inserted into the slot 400 of the other arc segment disk body 200. The plug block 310 is inserted into the slot 400. When the connector 300 moves to the socket 410, the pressure on a part of the second connecting rod 323 is released, the first spring 322 and the second spring 311 return to a natural state or a slightly compressed state, and the second connecting rod 323 is stuck in the socket 410. The splicing of one end of the two arc segment disk bodies 200 is completed, and the other arc segment disk bodies 200 are also connected in sequence according to the above steps until they are spliced ​​into an integral flange disk body 100. When the flange body 100 needs to be disassembled, a suitable tool is inserted into the jack 410, and pressure is applied to the second connecting rod 323. The first spring 322 and the second spring 311 are compressed, and the second connecting rod 323 moves toward the plug block 310, dragging the arc segment body 200 provided with the plug-in 300, and the plug-in 300 is removed from the slot 400, and the flange is disassembled. The utility model realizes the convenience, stability and long-life operation of large-diameter pipe connection through segmented splicing design, reliable connection structure and efficient corrosion protection, and is widely applicable to large-scale pipeline systems in chemical, petroleum, electric power and other industries.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A spliced ​​large-diameter flange, characterized in that: It comprises at least two arc-shaped segment disc bodies (200), a plurality of bolt holes (201) are provided on the arc-shaped segment disc bodies (200), a connection structure is provided between two adjacent arc-shaped segment disc bodies (200), and a plurality of the arc-shaped segment disc bodies (200) are connected through the connection structure to form a flange disc body (100); The connection structure comprises a slot (400) provided on one side of the arc segment disc body (200) and a connector (300) fixed on the other side of the arc segment disc body (200), and adjacent slots (400) and connectors (300) are connected and matched; The arc segment disc body (200) is provided with at least one plug hole (410) connected to the slot (400); the plug connector (300) comprises an insert block (310) and at least one snap connector (320); the snap connector (320) is fixed on the insert block (310); and the snap connector (320) is connected and matched with the plug hole (410).

2. The spliced ​​large-diameter flange according to claim 1, characterized in that: The plug hole (410) is a through hole, and two of the plug holes are provided. The two plug holes (410) are oppositely opened along the axial direction of the flange body (100). Two of the clamping parts (320) are provided, and each clamping part (320) is respectively clamped in one of the plug holes (410).

3. The spliced ​​large-diameter flange according to claim 2, characterized in that: The clamping member (320) includes a first connecting rod (321) and a second connecting rod (323) connected by a first spring (322), the first spring (322) is sleeved on the first connecting rod (321), and one end is fixed on the plug block (310), the other end of the first spring (322) is fixed to the second connecting rod (323), the second connecting rod (323) is sleeved on the outside of the first spring (322), and the second connecting rod (323) is connected and matched with the socket (410).

4. The spliced ​​large-diameter flange according to claim 3, characterized in that: The second connecting rod (323) includes a hollow rod (3231) and a solid rod (3232); one end of the hollow rod (3231) is an open structure, and the other end is a closed structure; the hollow rod (3231) is sleeved outside the spring (322) and is fixedly connected to the spring (322) inside; the solid rod (3232) is fixedly connected to one end of the closed structure of the hollow rod (3231).

5. The spliced ​​large-diameter flange according to claim 4, characterized in that: The clamping member (320) is connected to the insert block (310) via a second spring (311); one end of the second spring (311) is fixedly connected to the insert block (310), and the other end is fixedly connected to the open end of the second connecting rod (323).

6. The spliced ​​large-diameter flange according to claim 1, characterized in that: The arc-shaped segment disc body (200) is provided with a sealing gasket (210) at one end where the slot (400) is provided.

7. The spliced ​​large-diameter flange according to claim 1, characterized in that: The outer side of the arc segment disc body (200) is provided with a groove, and the grooves of all the arc segment disc bodies (200) are connected to form an annular groove, and a flexible pressure ring (220) is arranged in the annular groove.

8. The spliced ​​large-diameter flange according to claim 1, characterized in that: The surface of the arc-shaped segment disc body (200) is coated with a corrosion-resistant layer.

9. The spliced ​​large-diameter flange according to claim 8, characterized in that: The corrosion-resistant layer is a zinc-nickel alloy coating.

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