Ring connection hubbed welding neck flange with detachable sealing piece
By designing a ring-connected necked welding flange with a removable seal, the problem of cutting and shaving when the seal fails is solved, enabling safe and convenient seal replacement and reducing operational risks and costs.
Patent Information
- Application Number
- CN202423289473.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing ring-connected necked weld neck flanges require cutting or machining when the seal fails, which is time-consuming, labor-intensive, and carries the risk of hot work, especially in flammable and explosive areas where they cannot be safely replaced.
Design a ring-connected necked weld neck flange with a removable seal, including a flange body and a removable annular groove seal ring. The seal is achieved through the annular groove and a spiral wound gasket, and is secured with screws. This design allows for individual replacement of the seal ring without replacing the entire flange.
It eliminates the need for cutting or machining when the seal fails, avoids hot work, reduces operational difficulty and cost, and improves safety, especially in flammable and explosive areas.
Smart Images
Figure CN223635626U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical manufacturing technical field, concretely is a kind of ring connection with neck butt welding flange of detachable sealing element. BACKGROUND
[0002] Ring connection surface with neck butt welding flange is the common flange structure form on chemical enterprise, mechanical equipment, and it plays the connecting role between two ends pipeline or pipeline and equipment, and it is connected between flange and pipeline or equipment by welding form, when sealing fails, then it needs to cut down flange from pipeline or equipment, re-welds new flange, or, it needs special machining equipment to re-cutting processing repair, when pipeline has flammable and explosive medium, then it cannot cut or weld replacement, so that the safety hidden danger caused by leakage cannot be eliminated, for the above problems, the inventor proposes a kind of ring connection with neck butt welding flange of detachable sealing element to solve the above problems. UTILITY MODEL CONTENTS
[0003] In order to solve the problem that when the ring connection surface is sealed due to the defects such as groove and point pit in the sealing ring groove, the flange needs to be cut off from the pipeline or the equipment, or the special machining equipment is used to re-cut the sealing ring groove, which not only wastes time and effort, but also has the risk of fire operation; The purpose of the present utility model is to provide a kind of ring connection with neck butt welding flange of detachable sealing element.
[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of ring connection with neck butt welding flange of detachable sealing element, including flange body, ring groove sealing ring is detachably mounted on one side of flange body, metal winding pad is detachably mounted in one side of flange body, and ring groove sealing ring is detachably mounted in annular groove on the side of flange body and ring groove sealing ring.
[0005] Preferably, a ring-shaped stepped groove is formed on one side of the flange body, and the ring groove sealing ring is detachably installed in the ring-shaped stepped groove.
[0006] Preferably, a plurality of mounting holes are formed in a ring-shaped distribution on the ring groove sealing ring, and a cylindrical head inner hexagonal screw is inserted into each of the plurality of mounting holes.
[0007] Preferably, a plurality of threaded holes are formed in a ring-shaped distribution in the ring-shaped stepped groove, and one end of the cylindrical head inner hexagonal screw is threadedly inserted into the corresponding threaded hole.
[0008] Preferably, a positioning block is fixedly installed on the outer ring of the ring groove sealing ring, and the ring groove sealing ring is sealingly clamped in the ring-shaped stepped groove through the positioning block.
[0009] Preferably, a positioning groove is formed in the inner ring of the ring-shaped stepped groove, and the positioning block on the ring groove sealing ring is clamped in the positioning groove.
[0010] Compared with the prior art, the utility model has the beneficial effects that:
[0011] 1、The utility model discloses a ring groove sealing ring appears the defect such as groove, dot pit and causes sealing failure, can directly replace new ring groove sealing ring spare parts, need not cut down after the whole flange from equipment or pipeline and re -welds new flange, or carries out cutting processing repair, especially in the inflammable and explosive area, avoids the risk of hot work;
[0012] 2、The utility model discloses since ring groove sealing ring is relative to the whole flange body, size is small, and ring groove sealing ring manufacturing cost is lower than integral flange, and large -diameter flange is especially remarkable, simultaneously, replacing ring groove sealing ring is more time -saving and labor -saving than replacing integral flange. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, below description's drawing only some embodiments of the utility model, for the ordinary skill in the art person, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.
[0014] Figure 1 It is the whole structure schematic diagram of the utility model;
[0015] Figure 2 It is the flange body section structure schematic diagram of the utility model;
[0016] Figure 3 It is the flange body local section structure schematic diagram of the utility model;
[0017] Figure 4 It is the pipeline butt joint structure schematic diagram of the utility model.
[0018] In the drawing: 1, cylinder head inner hexagonal screw;2, metal winding pad;3, ring groove sealing ring;4, flange body;5, threaded hole;6, annular step groove;7, annular groove;8, positioning groove;9, positioning block;10, mounting hole;11, first pipeline;12, second pipeline;13, butt joint flange;14, butt joint groove. DETAILED DESCRIPTION
[0019] To make the objectives, technical solutions, and advantages of this application clearer, 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. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0020] Example: Figures 1-4 As shown, this utility model provides a ring-connected necked welding flange with a detachable sealing element, including a flange body 4. An annular groove sealing ring 3 is detachably installed on one side of the flange body 4, and a metal spiral wound gasket 2 is detachably installed inside one side of the flange body 4. Both the flange body 4 and the annular groove sealing ring 3 have annular grooves 7 on their adjacent sides, and the metal spiral wound gasket 2 is detachably installed within the annular groove 7. The annular groove sealing ring 3 has an annular structure. The dimensions of the annular groove 7 are manufactured according to the standard specifications for ring-connected flanges, and the material is metal, selected according to the medium in the pipeline. Alternatively, it can be the same material as the flange body 4. The thickness of the metal spiral wound gasket 2 is the sum of the depth of the annular groove 7 on the flange body 4 and the depth of the annular groove 7 on the annular groove sealing ring 3. The metal spiral wound gasket 2 can be installed within the annular groove 7 on the flange body 4, and the annular groove sealing ring 3 can be installed on the flange body 4, so that the metal spiral wound gasket 2 is located within the annular groove 7 on the annular groove sealing ring 3, thus sealing the annular groove. The sealing ring 3 is sealed to the flange body 4. The sealing ring groove is designed as an independent and detachable annular groove sealing ring 3, which is separated from the flange body 4. The two are sealed by a metal spiral wound gasket 2. The annular groove sealing ring 3 is then installed on the flange body 4. When the annular groove sealing ring 3 has defects such as grooves or pits that cause the seal to fail, a new annular groove sealing ring 3 can be directly replaced. It is not necessary to cut the entire flange off the equipment or pipeline and re-weld a new flange or perform machining repairs. Especially in flammable and explosive areas, this avoids the risk of hot work. When two pipelines are connected, the flange body 4 is welded to the connection end of the first pipeline 11, and the matching connection flange 13 is welded to the connection end of the second pipeline 12. The annular stepped groove 6 on the flange body 4 is inserted into the connection groove 14 on the connection flange 13, and the flange body 4 and the connection flange 13 are fixed with bolts to achieve a sealed connection of the pipelines.
[0021] In one possible implementation, an annular stepped groove 6 is provided on one side of the flange body 4, and the annular groove sealing ring 3 is detachably installed in the annular stepped groove 6.
[0022] By adopting the above technical solution, the annular groove sealing ring 3 can be installed in the annular stepped groove 6 on the flange body 4.
[0023] In a possible implementation, the ring groove sealing ring 3 is provided with a plurality of mounting holes 10 distributed in a ring shape, and a plurality of hexagonal socket head cap screws 1 are inserted into the mounting holes 10.
[0024] By using the above technical solution, the ring groove sealing ring 3 is installed in the ring stepped groove 6 on the flange body 4 and is fixed by the hexagonal socket head cap screws 1. The number of the hexagonal socket head cap screws 1 is determined according to the size of the flange, and the number is even and the hexagonal socket head cap screws 1 are distributed in a ring shape, so that the metal winding pad 2 is uniformly compressed.
[0025] In a possible implementation, the ring groove sealing ring 3 is provided with a plurality of mounting holes 10 distributed in a ring shape, and a plurality of hexagonal socket head cap screws 1 are inserted into the mounting holes 10.
[0026] By using the above technical solution, the ring groove sealing ring 3 is installed in the ring stepped groove 6 on the flange body 4 and is fixed by the hexagonal socket head cap screws 1. The number of the hexagonal socket head cap screws 1 is determined according to the size of the flange, and the number is even and the hexagonal socket head cap screws 1 are distributed in a ring shape, so that the metal winding pad 2 is uniformly compressed.
[0027] Working principle: One side of the flange body 4 is provided with a ring stepped groove 6 and a threaded hole 5, and other parts are the same as the conventional neck butt welding flange standard part. The metal winding pad 2 is installed in the ring groove 7 on the flange body 4, and the ring groove sealing ring 3 is installed on the flange body 4, so that the metal winding pad 2 is located in the ring groove 7 on the ring groove sealing ring 3. The ring groove sealing ring 3 and the flange body 4 are sealed, and the ring groove sealing ring 3 is fixed by the hexagonal socket head cap screws 1. The sealing ring groove is designed as an independent and detachable ring groove sealing ring 3, which is separated from the flange body 4, and the two are sealed by the metal winding pad 2. When the ring groove sealing ring 3 has defects such as grooves and pits and thus fails to seal, a new ring groove sealing ring 3 spare part can be directly replaced, without the need to cut off the entire flange from the equipment or pipeline and then weld a new flange or perform cutting processing repair. Especially in the flammable and explosive area, the risk of hot work is avoided.
[0028] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.
Claims
1. A ring joint flange of the necked-land type for removable seals, comprising a flange body (4), characterized in that: The flange body (4) is detachably mounted with a ring groove sealing ring (3) on one side, and the flange body (4) is detachably mounted with a metal winding gasket (2) on the other side.
2. A ring joint flange of the necked-ring-banded type having a removable seal as defined in claim 1, characterized in that, The flange body (4) is provided with a ring stepped groove (6) on one side, and the ring groove sealing ring (3) is detachably mounted in the ring stepped groove (6).
3. A ring joint flange of the necked-ring-banded type having a removable seal as defined in claim 2, wherein, A plurality of mounting holes (10) are arranged in a ring shape on the ring groove sealing ring (3), and a hexagonal socket head screw (1) is inserted into each mounting hole (10).
4. A ring joint flange of the necked-ring-banded type having a removable seal as defined in claim 3, wherein, A plurality of threaded holes (5) are arranged in a ring shape in the ring stepped groove (6), and one end of the hexagonal socket head screw (1) is threadedly inserted into the corresponding threaded hole (5).
5. A ring joint flange of the necked-ring-banded type having a removable seal as defined in claim 2, wherein, A positioning block (9) is fixedly mounted on the outer ring of the ring groove sealing ring (3), and the ring groove sealing ring (3) is sealingly clamped in the ring stepped groove (6) through the positioning block (9).
6. A ring joint flange of the type having a necked connection band for a removable seal as set forth in claim 5, wherein, The inner ring of the ring stepped groove (6) is provided with a positioning groove (8), and the positioning block (9) on the ring groove sealing ring (3) is clamped in the positioning groove (8).