Blind flange

Abstract

The utility model discloses a blind flange, and relates to the technical field of flanges. The pressure dividing mechanism is arranged on the bottom plate and used for dividing pressure in the using process of the flange, the pressure dividing mechanism comprises a reinforcing component and a pressure relief cambered surface, the reinforcing component is arranged on the bottom plate, and the pressure relief cambered surface is arranged on the reinforcing component; and the butt-joint sealing mechanism is arranged on the bottom plate and used for butt-joint sealing between the flange and the pipeline, and the butt-joint sealing mechanism comprises a butt-joint component. According to the blind plate flange, through the use of the pressure dividing mechanism, the change of the radian and thickness of the surface of the flange and the streamline design, local pressure concentration is reduced, stress is dispersed, the overall use effect is guaranteed, the service life is prolonged, the flange can be in butt joint with a pipeline through the use of the butt joint sealing mechanism, and according to the connecting position of the pipeline, the flange can be conveniently connected. And the position of the internal extrusion ring is adjusted, use of pipelines with different lengths is achieved, meanwhile, sealing is guaranteed, and the flexibility in the use process is improved.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically a blind flange. Background Technology

[0002] Blind flanges, also known as blind flanges or flange covers, are flanges without a central hole. They are a type of flange connection used to seal and plug pipes. In industries such as petroleum, chemical, metallurgy, power, shipbuilding, and machinery, blind flanges serve to isolate and cut off pipelines, similar to end caps, pipe caps, and welded plugs. The seal of a blind flange is a removable sealing device, unlike the seal of an end cap which is not intended to be reopened. Due to their superior sealing performance, blind flanges are generally used as a reliable isolation method for systems requiring complete isolation.

[0003] The authorized publication number "CN205877580U" describes "a blind flange, including a circular base with several connection holes, characterized in that: the base is provided with an anti-corrosion layer, which is a circular plate structure adapted to the flange of the pipeline to be assembled, the anti-corrosion layer is made of polytetrafluoroethylene, an annular groove is provided on the outer circumference of the anti-corrosion layer near the base, and an annular protrusion extending outward is provided on the outer circumferential sidewall of the anti-corrosion layer near the annular groove, the annular protrusion is arranged in a guide structure in the installation direction of the blind flange, and the annular protrusion is movable relative to the sidewall of the anti-corrosion layer to compress the groove structure; the blind flange can achieve anti-corrosion sealing with the pipeline and is not easily worn."

[0004] The aforementioned patent can achieve corrosion-resistant sealing with pipelines and is not easily worn. However, during use, the flange cannot be separated under pressure to ensure its effectiveness. At the same time, the flange cannot be adjusted to ensure levelness when it is connected to the pipeline to guarantee its use. Utility Model Content

[0005] This utility model provides a blind flange. By using a pressure-distributing mechanism, the curvature and thickness of the flange surface are changed. The streamlined design reduces local pressure concentration, disperses pressure, ensures overall performance, and improves service life. Through the use of a docking sealing mechanism, the flange can be docked with the pipeline. Furthermore, the position of the internal compression ring can be adjusted according to the pipeline connection position to achieve the use of different pipeline lengths while ensuring a seal and improving flexibility during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a blind flange, comprising:

[0007] Base plate;

[0008] A pressure-dividing mechanism, mounted on a base plate, is used for pressure distribution during flange use. The pressure-dividing mechanism includes a reinforcing component and a pressure-relieving arc surface. The reinforcing component is mounted on the base plate, and the pressure-relieving arc surface is located on the reinforcing component.

[0009] A docking sealing mechanism, mounted on a base plate, is used for docking sealing between a flange and a pipe. The docking sealing mechanism includes a docking component, multiple sets of guide components, a positioning component, and a compression ring. The docking component is mounted on the base plate, the multiple sets of guide components are all located inside the docking component, the positioning component is located inside the docking component, and the compression ring is located on the positioning component.

[0010] Furthermore, the reinforcing component is a reinforcing base, which is fixedly connected to the center of one side of the outer surface of the base plate, and the pressure relief arc surface is fixedly connected to the reinforcing base.

[0011] Furthermore, the docking component includes a sealing outer ring and a docking groove. The sealing outer ring is fixedly connected to the base plate, and the docking groove is disposed between the sealing outer ring and the reinforcing base.

[0012] Furthermore, each of the multiple sets of guide components includes a limiting sleeve and a limiting rod. The limiting sleeve is fixedly connected to the docking groove, and the limiting rod is movably inserted into the limiting sleeve and fixedly connected to the extrusion ring.

[0013] Furthermore, the positioning component comprises multiple compression springs, each compression spring being sleeved on each limiting sleeve, one end of each compression spring being fixedly connected to the mating groove, and the other end of each compression spring being fixedly connected to the compression ring.

[0014] Furthermore, the base plate has multiple connecting holes equidistantly spaced near the edge.

[0015] This utility model provides a blind flange. It has the following advantages:

[0016] (1) The blind flange, through the use of the pressure distribution mechanism, changes the curvature and thickness of the flange surface. The streamlined design reduces local pressure concentration, disperses the pressure, ensures the overall performance, and improves the service life.

[0017] (2) The blind flange can be connected to the pipeline by using the sealing mechanism. The internal compression ring position can be adjusted according to the connection position of the pipeline to achieve the use of different pipeline lengths, while ensuring sealing and improving the flexibility of use. Attached Figure Description

[0018] Figure 1 This is an exploded cross-sectional view of the present invention;

[0019] Figure 2 This is a partial sectional view of the present invention;

[0020] Figure 3 This is an exploded view of the present invention;

[0021] Figure 4 This is a perspective view of the present invention.

[0022] In the diagram: 1. Base plate; 2. Connecting hole; 3. Butt groove; 4. Pressure relief arc surface; 5. Reinforcing base; 6. Limiting sleeve; 7. Sealing outer ring; 8. Compression spring; 9. Limiting rod; 10. Compression ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, 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 scope of protection of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a blind flange, comprising:

[0025] Base plate 1;

[0026] A pressure-reducing mechanism, mounted on the base plate 1, is used for pressure reduction during flange use. The pressure-reducing mechanism includes a reinforcing component and a pressure-relief arc surface 4. The reinforcing component is mounted on the base plate 1, and the pressure-relief arc surface 4 is mounted on the reinforcing component.

[0027] The mating sealing mechanism is located on the base plate 1 and is used for mating sealing between the flange and the pipe. The mating sealing mechanism includes a mating component, multiple sets of guide components, positioning components and a compression ring 10. The mating component is located on the base plate 1, the multiple sets of guide components are all located inside the mating component, the positioning components are located inside the mating component, and the compression ring 10 is located on the positioning component.

[0028] In this implementation scheme: the pressure relief arc surface 4 can guide the water flow direction, reduce the direct collision between the water flow and the wall, reduce local pressure concentration, and the pressure relief arc surface 4 has an anti-corrosion layer to ensure its use. Since the length of the pipe and the flange are not the same, the compression ring 10 is matched according to the length of the pipe to achieve a seal after the connection and ensure the use effect.

[0029] Specifically, the reinforcing component is a reinforcing base 5, which is fixedly connected to the center of one side of the outer surface of the base plate 1, and the pressure relief arc surface 4 is fixedly connected to the reinforcing base 5.

[0030] In this embodiment: the thickness of the base plate 1 is increased by increasing the thickness of the reinforcing base 5 to improve the pressure resistance.

[0031] Specifically, the mating components include a sealing outer ring 7 and a mating groove 3. The sealing outer ring 7 is fixedly connected to the base plate 1, and the mating groove 3 is located between the sealing outer ring 7 and the reinforcing base 5.

[0032] In this embodiment: the sealing outer ring 7 wraps around the outside of the pipe, and at the same time, the pipe is connected in the docking groove 3 to complete the sealing.

[0033] Specifically, each of the multiple guide components includes a limiting sleeve 6 and a limiting rod 9. The limiting sleeve 6 is fixedly connected to the docking groove 3, and the limiting rod 9 is movably inserted into the limiting sleeve 6 and fixedly connected to the extrusion ring 10.

[0034] In this embodiment, the limiting sleeve 6 and the limiting rod 9 cooperate to restrict the path of the extrusion ring 10 when it moves.

[0035] Specifically, the positioning components are multiple compression springs 8, each compression spring 8 is sleeved on each limiting sleeve 6, one end of each compression spring 8 is fixedly connected to the mating groove 3, and the other end of each compression spring 8 is fixedly connected to the compression ring 10.

[0036] In this embodiment, multiple compression springs 8 control the position of the compression ring 10 to ensure its use.

[0037] Specifically, multiple connecting holes 2 are equidistantly provided on the base plate 1 near the edge.

[0038] In this embodiment, multiple connection holes 2 facilitate the connection between the flange assembly and the pipeline.

[0039] During use, the pipe is connected in the connection groove 3, and the compression ring 10 is squeezed. The compression spring 8 seals the compression ring 10 with the pipe. At the same time, the sealing outer ring 7, the reinforcing base 5 and the compression ring 10 cooperate to ensure the sealing effect. The base plate 1 is connected to the pipe through multiple connection holes 2 to ensure use. During use, the pressure relief arc surface 4 guides the water flow direction, reduces the direct collision between the water flow and the wall, and reduces local pressure concentration.

[0040] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A blind flange, characterized in that, include: Base plate (1); A pressure-dividing mechanism, mounted on the base plate (1), is used for pressure distribution during flange use. The pressure-dividing mechanism includes a reinforcing component and a pressure-relieving arc surface (4). The reinforcing component is mounted on the base plate (1), and the pressure-relieving arc surface (4) is mounted on the reinforcing component. The docking sealing mechanism is located on the base plate (1) and is used for docking sealing between the flange and the pipe. The docking sealing mechanism includes a docking component, multiple sets of guide components, positioning components and a compression ring (10). The docking component is located on the base plate (1), multiple sets of guide components are located inside the docking component, the positioning components are located inside the docking component, and the compression ring (10) is located on the positioning component.

2. A blind flange according to claim 1, characterized in that, The reinforcing component is a reinforcing base (5), which is fixedly connected to the center of one side of the outer surface of the base plate (1), and the pressure relief arc surface (4) is fixedly connected to the reinforcing base (5).

3. A blind flange according to claim 2, characterized in that, The docking component includes a sealing outer ring (7) and a docking groove (3). The sealing outer ring (7) is fixedly connected to the base plate (1), and the docking groove (3) is located between the sealing outer ring (7) and the reinforcing base (5).

4. A blind flange according to claim 3, characterized in that, Each of the multiple sets of guide components includes a limiting sleeve (6) and a limiting rod (9). The limiting sleeve (6) is fixedly connected to the docking groove (3), and the limiting rod (9) is movably inserted into the limiting sleeve (6) and fixedly connected to the extrusion ring (10).

5. A blind flange according to claim 4, characterized in that, The positioning component consists of multiple compression springs (8), each compression spring (8) is sleeved on each limiting sleeve (6), one end of each compression spring (8) is fixedly connected to the docking groove (3), and the other end of each compression spring (8) is fixedly connected to the compression ring (10).

6. A blind flange according to claim 5, characterized in that, The base plate (1) has multiple connecting holes (2) at equal intervals near the edge.

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