Combined flange structure

Abstract

The utility model relates to the technical field of flange connection and installation, in particular to a combined type flange structure which comprises a first flange, a second flange is installed at the top end of the first flange, fixing mechanisms are installed on the outer wall of the first flange at equal intervals, the fixing mechanisms are used for improving the connection rigidity of the structure, and a damping mechanism is installed at the top end of the second flange. The damping mechanism is used for reducing the influence of vibration pressure; the fixing mechanism comprises a fixing block. According to the utility model, the flange I and the flange II are aligned and connected together, then the convex block is inserted into the inner wall of the fixed block, the limiting block can clamp the convex block due to the springback of the spring I to prevent the convex block from loosening, and then the adjusting bolt is rotated, so that the adjusting bolt enters the inner wall of the flange II to fix the flange I and the flange II together to form stable connection; when the flange structure bears high pressure, high temperature and alternating load, leakage and structural failure caused by reduction of overall rigidity due to inconsistent deformation at the joint are prevented.

Description

Technical Field

[0001] This utility model relates to the field of flange connection and installation technology, and in particular to a combined flange structure. Background Technology

[0002] A flange, also known as a flange plate or flange, is a disc-shaped part with bolt holes used to connect two pipes, fittings, and equipment. It is attached to the end of the pipe to connect the pipes to each other. It is widely used in the chemical, construction, petroleum, and shipbuilding industries to connect pipes, valves, and equipment.

[0003] Modular flange structures are manufactured and assembled together with the connected equipment, ensuring high precision of the flange face, but cannot be adjusted for on-site dimensions. They are mostly used for high-pressure pipelines, and the materials include carbon steel, stainless steel, and alloy steel. The manufacturing process is generally casting. They can also change the direction and diameter of the pipeline, withstand the pressure and temperature in the pipeline system, and ensure the sealing and stability of the system.

[0004] In existing technologies, composite flange structures are composed of two or more flange pieces spliced ​​together. Each flange piece has a snap-fit ​​part and a matching groove at both ends. Through the cooperation of the snap-fit ​​part and the groove, the flange pieces are sequentially spliced ​​into a ring along the axis of the pipe fitting. The pipe fitting has a retaining ring, and the flange piece has a snap-fit ​​part for engaging the retaining ring. In addition, the flange piece has circumferentially distributed mounting holes, making operation simple and convenient, avoiding the need for reinstallation of the pipe fitting due to forgetting to pre-install the flange, thus improving installation efficiency. However, gaps easily form at the connection interfaces, such as the contact surface between bolts and flanges, and welds. After the medium penetrates, corrosion occurs due to oxygen concentration differences and ion concentration. Currently, duplex stainless steel and Hastelloy corrosion-resistant materials are selected, and the flange surface is coated to avoid direct contact between different metals. Insulating gaskets are added to the contact surfaces to prevent galvanic corrosion. Under high pressure, high temperature, and alternating loads, inconsistent deformation at the connection points can lead to a decrease in overall rigidity, causing leakage and structural failure. Summary of the Invention

[0005] The purpose of this invention is to provide a combined flange structure that solves the problem that when subjected to high pressure, high temperature and alternating loads, inconsistent deformation at the connection point can lead to a decrease in overall stiffness, resulting in leakage and structural failure.

[0006] To achieve the above objectives, this utility model provides a combined flange structure, including a flange one, a flange two installed at the top of the flange one, and a fixing mechanism installed at equal intervals on the outer wall of the flange one, the fixing mechanism being used to improve the connection rigidity of the structure. A shock-absorbing mechanism is installed at the top of the flange two, the shock-absorbing mechanism being used to reduce the impact of vibration pressure. The fixing mechanism includes a fixing block, a protrusion slidably connected to the middle of the inner wall of the fixing block, a clamping block fixedly connected to the outer wall of the protrusion, and limit components installed at both the upper and lower ends of the inner wall of the fixing block.

[0007] The limiting component includes a locking block, which is threadedly connected to the upper and lower ends of the inner wall of the fixing block. A spring is installed at the bottom end of the locking block, and a limiting block is installed at the bottom end of the spring. The protrusion is slidably connected to the outer wall of the limiting block.

[0008] The top left side of the clamping block is threaded with an adjusting bolt, which is threaded onto the inner wall of flange two.

[0009] The damping mechanism includes a fixing component, which includes a limiting ring. The limiting ring is fixedly connected to the top wall of the flange two at equal intervals, and the outer wall of the limiting ring is threaded with multiple fixing posts at equal intervals.

[0010] The limiting ring has multiple damping rods installed at equal intervals on its inner wall, and springs are installed on the outer wall of each damping rod. A fixing ring is fixedly connected to the top of each damping rod.

[0011] The outer wall of the fixing ring is provided with sliding grooves on both the left and right sides, and the sliding grooves are slidably connected to the outer wall of the fixing column.

[0012] A sealing ring is installed on the inner side of the flange, and the sealing ring is fixedly connected to the inner wall of the flange.

[0013] A gasket is installed on the inner wall of flange one, and the gasket is fixedly connected to the upper part of the inner wall of flange one.

[0014] This utility model discloses a combined flange structure.

[0015] 1. In this utility model, flange one and flange two are aligned and connected together. Then, the protrusion is inserted into the inner wall of the fixing block. The limiting block will lock the protrusion due to the spring rebound, preventing the protrusion from loosening. Then, the adjusting bolt is rotated, and the adjusting bolt will enter the inner wall of flange two, fixing flange one and flange two together to form a stable connection. This prevents the flange structure from easily reducing the overall rigidity due to inconsistent deformation at the connection when subjected to high pressure, high temperature and alternating loads, which could lead to leakage and structural failure.

[0016] 2. In this utility model, the fixed ring shakes and compresses the damping rod, which in turn compresses the spring. The fixed ring is then limited by the limiting ring and the fixed post to prevent it from detaching or becoming misaligned. When the spring is subjected to vibration, it undergoes elastic deformation, absorbing and buffering the vibration energy. This allows the fixed ring to adapt to the vibration frequency of the structure, further improving the pressure resistance of the flange structure and preventing components from loosening, wearing, or even being damaged due to long-term vibration, thereby increasing the service life of the flange structure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a combined flange structure proposed in this utility model;

[0019] Figure 2 This is a front view of a combined flange structure proposed in this utility model;

[0020] Figure 3 This is a cross-sectional view of a combined flange structure proposed in this utility model;

[0021] Figure 4 This is a partial structural breakdown diagram of a combined flange structure proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of a shock-absorbing mechanism for a combined flange structure proposed in this utility model.

[0023] 1. Flange 1; 2. Flange 2; 3. Fixing mechanism; 301. Adjusting bolt; 302. Clamping block; 303. Limiting assembly; 3031. Locking block; 3032. Spring 1; 3033. Limiting block; 304. Fixing block; 305. Protrusion; 4. Shock absorption mechanism; 401. Fixing ring; 402. Slide groove; 403. Spring 2; 404. Fixing assembly; 4041. Fixing column; 4042. Limiting ring; 405. Damping rod; 5. Sealing ring; 6. Gasket. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0025] Please see Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a combined flange structure, including a flange 1, a flange 2 mounted on the top of flange 1, and fixing mechanisms 3 equidistantly mounted on the outer wall of flange 1 to improve the connection rigidity of the structure. A shock-absorbing mechanism 4 is mounted on the top of flange 2 to reduce the impact of vibration pressure. The fixing mechanism 3 includes a fixing block 304, a protrusion 305 slidably connected to the middle of the inner wall of the fixing block 304, and a clamping block 302 fixedly connected to the outer wall of the protrusion 305. Limiting components 303 are installed at both the upper and lower ends of the inner wall of the fixing block 304. The limiting components 303 include a locking block 3031, which is threadedly connected to the upper and lower ends of the inner wall of the fixing block 304. A spring 3032 is installed at the bottom end of the locking block 3031, and a limiting block 3033 is installed at the bottom end of the spring 3032. A protrusion 305 is slidably connected to the outer wall of the limiting block 3033. An adjusting bolt 301 is threadedly connected to the left side of the top wall of the clamping block 302, and the adjusting bolt 301 is threadedly connected to the inner wall of the flange 2.

[0026] Specifically, flange 1 and flange 2 are aligned and connected together. Then, the protrusion 305 is inserted into the inner wall of the fixing block 304. The limiting block 3033 will lock the protrusion 305 due to the rebound of the spring 3032, preventing the protrusion 305 from loosening. Then, the adjusting bolt 301 is rotated, and the adjusting bolt 301 will enter the inner wall of flange 2, fixing flange 1 and flange 2 together to form a stable connection. This prevents the flange structure from easily reducing the overall rigidity due to inconsistent deformation at the connection when subjected to high pressure, high temperature and alternating loads, which could lead to leakage and structural failure.

[0027] Please see Figure 1 , Figure 2 and Figure 5 The damping mechanism 4 includes a fixing component 404, which includes a limiting ring 4042. The limiting ring 4042 is fixedly connected to the top wall of the flange 2 at equal intervals. Multiple fixing posts 4041 are threadedly connected to the outer wall of the limiting ring 4042 at equal intervals. Multiple damping rods 405 are installed at equal intervals on the inner wall of the limiting ring 4042. Springs 403 are installed on the outer wall of the damping rods 405. A fixing ring 401 is fixedly connected to the top of the damping rods 405. Sliding grooves 402 are provided on the left and right sides of the outer wall of the fixing ring 401. The sliding grooves 402 are slidably connected to the outer wall of the fixing posts 4041.

[0028] Specifically, the fixed ring 401 shakes and compresses the damping rod 405, which in turn compresses the second spring 403. The fixed ring 401 is then limited by the limiting ring 4042 and the fixed post 4041 to prevent it from dislodging or becoming misaligned. When the second spring 403 is subjected to vibration, it undergoes elastic deformation to absorb and buffer vibration energy, enabling the fixed ring 401 to adapt to the vibration frequency of the structure. This further improves the pressure resistance of the flange structure and prevents components from loosening, wearing, or even being damaged due to long-term vibration, thereby extending the service life of the flange structure.

[0029] Please see Figure 1 , Figure 2 and Figure 3 A sealing ring 5 is installed on the inner side of flange 1. The sealing ring 5 is fixedly connected to the inner wall of flange 1. A gasket 6 is installed on the inner wall of flange 1. The gasket 6 is fixedly connected to the upper part of the inner wall of flange 1.

[0030] Specifically, the sealing ring 5 is used to fill the gap at the flange connection to prevent media leakage. The shape and material of the sealing ring 5 are determined according to different usage requirements. During flange connection, it fully fills the gap through its own deformation and compression to improve the sealing effect. The gasket 6 is usually placed between the flange contact surfaces to further enhance the sealing performance and compensate for the unevenness of the flange surface.

[0031] Working principle: To ensure that flange 1 and flange 2 can be precisely aligned and connected, the protrusion 305 needs to be inserted into the inner wall of the fixing block 304. The limiting block 3033 will rebound under the action of spring 3032, thereby locking the protrusion 305. This effectively prevents the protrusion 305 from loosening during use. Then, by rotating the adjusting bolt 301, it is inserted into the inner wall of flange 2, thereby tightly fixing flange 1 and flange 2 together to form a stable connection. This connection method plays an important role in preventing the flange structure from experiencing a decrease in overall stiffness due to inconsistent deformation at the connection point when subjected to high pressure, high temperature and alternating loads, which could lead to leakage and structural failure.

[0032] In the flange structure, the retaining ring 401 compresses the damping rod 405 by shaking. After being compressed, the damping rod 405 further compresses the second spring 403. To prevent the retaining ring 401 from coming off or becoming misaligned during use, the limiting ring 4042 and the fixing post 4041 effectively limit the retaining ring 401. The second spring 403 undergoes elastic deformation when subjected to vibration. This deformation can absorb and buffer vibration energy, allowing the retaining ring 401 to adapt to the vibration frequency of the structure. In this way, the compressive strength of the flange structure is further improved, avoiding loosening, wear, or even damage of components due to long-term vibration, thereby significantly improving the service life of the flange structure.

[0033] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A composite flange structure, comprising flange one, characterized in that: Flange 2 is installed at the top of flange 1. Fixing mechanisms are installed at equal intervals on the outer wall of flange 1. The fixing mechanisms are used to improve the connection rigidity of the structure. A damping mechanism is installed at the top of flange 2. The damping mechanism is used to reduce the impact of vibration pressure. The fixing mechanism includes a fixing block, a protrusion slidably connected to the middle of the inner wall of the fixing block, a clamping block fixedly connected to the outer wall of the protrusion, and limit components installed at the upper and lower ends of the inner wall of the fixing block.

2. The combined flange structure as described in claim 1, characterized in that: The limiting component includes a locking block, which is threadedly connected to the upper and lower ends of the inner wall of the fixing block. A spring is installed at the bottom end of the locking block, and a limiting block is installed at the bottom end of the spring. The protrusion is slidably connected to the outer wall of the limiting block.

3. The combined flange structure as described in claim 1, characterized in that: An adjusting bolt is threaded to the left side of the top wall of the clamping block, and the adjusting bolt is threaded to the inner wall of flange two.

4. The combined flange structure as described in claim 1, characterized in that: The shock absorption mechanism includes a fixing component, which includes a limiting ring. The limiting ring is fixedly connected to the top wall of the flange at equal intervals, and the outer wall of the limiting ring is threaded with multiple fixing posts at equal intervals.

5. A combined flange structure as described in claim 4, characterized in that: Multiple damping rods are equidistantly installed on the inner wall of the limiting ring, and springs are installed on the outer wall of the damping rods. A fixing ring is fixedly connected to the top of the damping rod.

6. A combined flange structure as described in claim 5, characterized in that: The outer wall of the fixing ring is provided with sliding grooves on both the left and right sides, and the sliding grooves are slidably connected to the outer wall of the fixing column.

7. A combined flange structure as described in claim 1, characterized in that: A sealing ring is installed on the inner side of flange one, and the sealing ring is fixedly connected to the inner wall of flange one.

8. A combined flange structure as described in claim 1, characterized in that: A gasket is installed on the inner wall of flange one, and the gasket is fixedly connected to the upper part of the inner wall of flange one.

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