Valve flange connecting structure

Abstract

The utility model relates to the field of valve flanges, in particular to a valve flange connecting structure which comprises a valve flange plate and a pipeline flange plate, adjusting openings are formed in the rear side of the valve flange plate and the rear side of the pipeline flange plate, adjusting rings are installed in the adjusting openings through thread structures, and a first sealing groove and a first sealing ring are arranged on the inner side of the valve flange plate. A second sealing groove and a second sealing ring are arranged on the inner side of the pipeline flange, the second sealing ring is inserted into the first sealing groove, the first sealing ring is inserted into the second sealing groove, a double-layer sealing structure is formed, and the overall sealing performance is remarkably improved. Appropriate sizes can be selected for installation according to actual needs, tight connection of a valve flange plate and a pipeline flange with a valve and a pipeline is ensured, a spring washer is arranged in the sealing cap and attached to a bolt, the bolt is effectively prevented from loosening during vibration or temperature change, and connection stability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve flange field, concretely is a valve flange connecting structure. BACKGROUND

[0002] In industrial pipeline systems, valves are one of the key components for controlling fluid flow. To ensure reliable connection and sealing between the valve and the pipeline, flange connection is usually adopted. However, the traditional flange connection structure has the following shortcomings:

[0003] Poor sealing performance:

[0004] Sealing material aging: The traditional sealing gasket (such as rubber gasket) is prone to aging after long-term use, resulting in sealing failure.

[0005] Uneven sealing surface: The machining precision of flange surface is insufficient or the centering during installation is poor, which easily causes uneven sealing surface and affects the sealing effect.

[0006] Single sealing structure: The traditional flange connection usually only has one layer of sealing ring, which is difficult to meet the long-term sealing requirement in high temperature and high pressure environment.

[0007] Insufficient connection strength:

[0008] Loose bolts: In the case of vibration or temperature change, the bolts are prone to looseness, resulting in decreased connection strength.

[0009] Flange deformation: The flange is prone to deformation in high temperature and high pressure environment, affecting the reliability of connection.

[0010] Adjustment difficulty: The traditional flange connection structure lacks effective adjustment mechanism, which is difficult to adapt to flanges of different sizes and specifications. INVENTION CONTENTS

[0011] (I) Technical problems solved

[0012] In view of the shortcomings of the prior art, the utility model provides a valve flange connection structure.

[0013] (II) Technical scheme

[0014] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A valve flange connection structure of the present invention includes a valve flange and a pipe flange, and the rear sides of the valve flange and the pipe flange are provided with adjustment ports, and an adjustment ring is installed in the adjustment port through a threaded structure. The inner side of the valve flange is provided with a sealing groove 1 and a sealing ring 1, and the inner side of the pipe flange is provided with a sealing groove 2 and a sealing ring 2, and the sealing ring 2 is inserted into the sealing groove 1, and the sealing ring 1 is inserted into the sealing groove 2. The valve flange and the pipe flange are connected by bolts, and a number of bolts are provided around the outer sides of the valve flange and the pipe flange.

[0015] Preferably, the adjustment ring includes several sizes, and the inner side of the adjustment ring is wrapped with a sealing rubber ring.

[0016] Further preferably, the sealing ring 1 and the sealing ring 2 include sealing rubber rings.

[0017] Preferably again, a sealing cap is further included, and a plurality of annular grooves are provided around the sides of the valve flange and the pipe flange, the annular grooves are located on the outside of the bolts, and the sealing cap is connected to the annular grooves through a threaded structure.

[0018] Preferably, a spring washer is provided in the sealing cap, and the spring washer fits with the bolt.

[0019] Further preferably, a plurality of arcuate grooves are provided around the sides of the valve flange and the pipe flange, and the arcuate grooves serve as force application points for rotating the valve flange and the pipe flange.

[0020] Again preferably, a rotating rod is provided on the sealing cap, and grooves are provided on both sides of the rotating rod.

[0021] (3) Beneficial effects

[0022] Compared with the prior art, the present invention provides a valve flange connection structure with the following features:

[0023] Beneficial effects:

[0024] Improve sealing performance:

[0025] Double-layer sealing structure: The inner side of the valve flange is equipped with sealing groove 1 and sealing ring 1, while the inner side of the pipe flange is equipped with sealing groove 2 and sealing ring 2. Sealing ring 2 is inserted into sealing groove 1, and sealing ring 1 is inserted into sealing groove 2, forming a double-layer sealing structure, which significantly improves the overall sealing performance.

[0026] Sealing rubber ring: Sealing rubber rings are wrapped around both sealing rings 1 and 2, which further enhances the sealing effect and ensures long-term reliability in high temperature and high pressure environments.

[0027] Enhanced connection strength:

[0028] Adjustment ring: There are adjustment ports on the back of the valve flange and the pipe flange. An adjustment ring is installed in the adjustment port through a threaded structure. The adjustment ring includes several sizes. You can choose the appropriate size for installation according to actual needs to ensure the tight connection between the valve flange and the pipe flange and the valve and the pipeline.

[0029] Sealing rubber ring: The inner side of the adjusting ring is wrapped with a sealing rubber ring to ensure the sealing between the adjusting ring and the flange to prevent leakage.

[0030] Multi-point bolt connection: The valve flange and the pipe flange are connected by multiple bolts. Several bolts are arranged around the outside to ensure uniform force and improve the connection strength.

[0031] Anti-loosening design: A spring washer is installed inside the sealing cap. The spring washer fits tightly against the bolt, effectively preventing the bolt from loosening due to vibration or temperature changes, thus ensuring the stability of the connection.

[0032] Simplified installation and maintenance:

[0033] Adjustment ring: The design of the adjustment ring allows the gap between the flanges to be flexibly adjusted, making installation and adjustment easier.

[0034] Arc groove: There are several arc grooves around the sides of the valve flange and pipe flange, which serve as force points for rotating the flange to facilitate installation and disassembly.

[0035] Sealing cap: Several annular grooves surround the sides of the valve and pipe flanges, located outside the bolts. The sealing cap is connected to the annular grooves via a threaded structure and contains a spring washer to prevent the bolts from loosening.

[0036] Rotating rod: The sealing cap is provided with a rotating rod, and grooves are provided on both sides of the rotating rod to facilitate operation with tools (such as wrenches), simplifying the installation and removal process.

[0037] Reduce costs:

[0038] Extended service life: The application of double-layer sealing structure and sealing rubber ring significantly improves the sealing performance and service life, and reduces the replacement frequency.

[0039] Reduce labor costs: Simplify the installation and maintenance process, reduce the time and difficulty of manual operation, and reduce labor costs.

[0040] Reduced material costs: High-quality sealing materials and reliable connection structures reduce additional repair and replacement costs caused by leakage and damage.

[0041] Improved security:

[0042] Double seal: The application of double-layer sealing structure and sealing rubber ring ensures long-term reliability in high temperature and high pressure environment and reduces the risk of leakage.

[0043] Anti-loosening design: The design of spring washer and sealing cap effectively prevents bolt loosening, ensures the stability of the connection and improves the safety of the system.

[0044] Highly adaptable:

[0045] Adjustment rings of various sizes: The adjustment rings come in several sizes, and you can choose the appropriate size for installation according to actual needs. They are suitable for valves and pipes of different specifications.

[0046] Versatility: The connection structure is designed to be versatile and suitable for various industrial piping systems. It is widely used in petroleum, chemical, water treatment and other industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of the structure of one side of the valve flange of the utility model;

[0048] Figure 2 This is a schematic diagram of the structure of one side of the pipeline flange of the utility model;

[0049] Figure 3 This is a schematic diagram of the cross-sectional structure of the sealing cap of the utility model;

[0050] In the figure: 1. Valve flange; 2. Pipe flange; 3. Adjusting ring; 4. Sealing groove 1; 5. Sealing ring 1; 6. Sealing groove 2; 7. Sealing ring 2; 8. Bolt; 9. Arc groove; 10. Annular groove; 11. Sealing cap; 12. Spring washer; 13. Rotating rod; 14. Groove. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] See also Figure 1-3The utility model provides a valve flange connection structure, including a valve flange 1 and a pipe flange 2. The rear sides of the valve flange 1 and the pipe flange 2 are both provided with adjustment ports, and an adjustment ring 3 is installed in the adjustment port through a threaded structure. The inner side of the valve flange 1 is provided with a sealing groove 1 4 and a sealing ring 1 5, and the inner side of the pipe flange 2 is provided with a sealing groove 2 6 and a sealing ring 2 7, and the sealing ring 2 7 is inserted into the sealing groove 1 4, and the sealing ring 1 5 is inserted into the sealing groove 2 6. The valve flange 1 and the pipe flange 2 are connected by bolts 8, and a plurality of bolts 8 are arranged around the outer sides of the valve flange 1 and the pipe flange 2.

[0053] This valve flange connection structure significantly improves the connection reliability and sealing performance between the valve and pipeline through optimized design and the use of new sealing materials. The structure comprises a valve flange 1 and a pipeline flange 2, connected by bolts 8. Adjustment ports and an adjustment ring 3 are provided on the rear side of the flanges to achieve a tighter seal and flexible adjustment. The specific working principle is as follows:

[0054] flange

[0055] Valve flange 1: Installed at the end of the valve, with a sealing groove 4 and a sealing ring 5 on the inside.

[0056] Pipe flange 2: installed at the end of the pipeline, with a sealing groove 6 and a sealing ring 7 on the inside.

[0057] Sealing components

[0058] Sealing groove 1 4 and sealing ring 1 5: located on the inner side of the valve flange 1, the sealing ring 1 5 is inserted into the sealing groove 2 6 of the pipe flange 2.

[0059] Sealing groove 2 6 and sealing ring 2 7: located on the inner side of the pipe flange 2, and sealing ring 2 7 is inserted into the sealing groove 1 4 of the valve flange 1.

[0060] Sealing rubber ring: Sealing rubber rings 1 and 2 are wrapped with sealing rubber rings to further enhance the sealing effect.

[0061] Adjustment port and adjustment ring 3

[0062] Adjustment port: There is an adjustment port on the rear side of the valve flange 1 and the pipe flange 2, and an adjustment ring 3 is installed through a threaded structure.

[0063] Adjustment ring 3: The adjustment ring 3 includes several sizes, and you can choose the appropriate size for installation as needed. The inner side of the adjustment ring 3 is wrapped with a sealing rubber ring to ensure the sealing between the adjustment ring 3 and the flange.

[0064] Connectors

[0065] Bolt 8: The valve flange 1 and the pipe flange 2 are connected by bolts 8. Several bolts 8 are arranged around the outside to ensure uniform force and improve the connection strength.

[0066] Assistive devices

[0067] Annular groove 10 and sealing cap 11: Several annular grooves 10 are provided around the sides of the valve flange 1 and the pipe flange 2. The annular grooves 10 are located outside the bolts 8. The sealing cap 11 is connected to the annular groove 10 through a threaded structure. A spring washer 12 is provided inside the sealing cap 11. The spring washer 12 fits against the bolts 8 to prevent the bolts 8 from loosening.

[0068] Arc groove 9: Several arc grooves 9 are provided around the sides of the valve flange 1 and the pipe flange 2, which serve as force points for rotating the flanges to facilitate installation and disassembly.

[0069] Rotating rod 13: A rotating rod 13 is provided on the sealing cap 11. Grooves 14 are provided on both sides of the rotating rod 13 to facilitate operation using tools.

[0070] Working principles of each preferred technical solution

[0071] Design of adjustment ring 3

[0072] Size diversity: The adjustment ring 3 includes several sizes, and the appropriate size can be selected for installation according to actual needs to ensure a tight connection between the flanges.

[0073] Sealing rubber ring: The inner side of the adjusting ring 3 is wrapped with a sealing rubber ring to ensure the sealing between the adjusting ring 3 and the flange to prevent leakage.

[0074] Sealing ring design

[0075] Double-layer sealing: The sealing ring 1 5 and the sealing ring 2 7 are respectively inserted into each other's sealing groove to form a double-layer sealing structure to improve the overall sealing performance.

[0076] Sealing rubber ring: Sealing rubber rings 1 5 and 2 7 are both wrapped with sealing rubber rings to further enhance the sealing effect and ensure long-term reliability in high temperature and high pressure environments.

[0077] Design of sealing cap 11

[0078] Annular groove 10: Several annular grooves 10 are provided around the sides of the valve flange 1 and the pipe flange 2. The annular grooves 10 are located on the outside of the bolts 8 and are used to install the sealing caps 11.

[0079] Sealing cap 11: The sealing cap 11 is connected to the annular groove 10 through a threaded structure, and a spring washer 12 is provided inside. The spring washer 12 fits with the bolt 8 to effectively prevent the bolt 8 from loosening and ensure the stability of the connection.

[0080] Spring washer 12: The spring washer 12 provides pre-tightening force to prevent the bolt 8 from loosening due to vibration or temperature changes, thereby ensuring the reliability of the connection.

[0081] Design of arc groove 9

[0082] Force application points: Several arc-shaped grooves 9 are provided around the sides of the valve flange 1 and the pipe flange 2, which serve as force application points for rotating the flanges to facilitate installation and disassembly.

[0083] Convenient operation: The design of the arc groove 9 makes it easier to apply torque during installation and disassembly, thereby improving operational efficiency.

[0084] Design of the rotating rod 13

[0085] Rotating rod 13: The sealing cap 11 is provided with a rotating rod 13, and grooves 14 are provided on both sides of the rotating rod 13 to facilitate operation using tools (such as a wrench).

[0086] Convenient operation: The design of the rotating rod 13 makes the installation and removal of the sealing cap 11 more convenient, reducing the time and difficulty of manual operation.

[0087] Summarize

[0088] Through the above technical solution, the present invention provides an efficient and reliable valve flange connection structure, which can significantly improve the connection reliability and sealing performance between the valve and the pipeline. Specifically:

[0089] Improved sealing performance: The application of double-layer sealing structure and sealing rubber ring significantly improves the sealing performance and service life.

[0090] Enhanced connection strength: The design of the adjustment ring 3 and the sealing cap 11 ensures the stability and reliability of the connection.

[0091] Simplified installation and maintenance: The design of the arc groove 9 and the rotating rod 13 facilitates the installation and disassembly process and improves the operating efficiency.

[0092] Reduce costs: Extend service life, reduce replacement frequency, and reduce material and labor costs.

[0093] Through these technical solutions, the structure not only improves the safety and efficiency of operations, but also reduces maintenance costs, with significant economic and social benefits.

[0094] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve flange connection structure, characterized in that: The invention comprises a valve flange (1) and a pipe flange (2), wherein the rear sides of the valve flange (1) and the pipe flange (2) are both provided with an adjustment port, an adjustment ring (3) is installed in the adjustment port through a threaded structure, the inner side of the valve flange (1) is provided with a sealing groove (4) and a sealing ring (5), the inner side of the pipe flange (2) is provided with a sealing groove (6) and a sealing ring (7), and the sealing ring (7) is inserted into the sealing groove (4), and the sealing ring (5) is inserted into the sealing groove (6), the valve flange (1) and the pipe flange (2) are connected by bolts (8), and a plurality of bolts (8) are provided around the outer sides of the valve flange (1) and the pipe flange (2).

2. A valve flange connection structure according to claim 1, characterized in that: The adjustment ring (3) includes several sizes, and the inner side of the adjustment ring (3) is wrapped with a sealing rubber ring.

3. A valve flange connection structure according to claim 2, characterized in that: The sealing ring 1 (5) and the sealing ring 2 (7) include sealing rubber rings.

4. A valve flange connection structure according to claim 3, characterized in that: It also includes a sealing cap (11), and a plurality of annular grooves (10) are arranged around the sides of the valve flange (1) and the pipe flange (2). The annular grooves (10) are located outside the bolts (8), and the sealing cap (11) is connected to the annular grooves (10) through a threaded structure.

5. A valve flange connection structure according to claim 4, characterized in that: A spring washer (12) is provided in the sealing cap (11), and the spring washer (12) is fitted with the bolt (8).

6. A valve flange connection structure according to claim 5, characterized in that: A plurality of arcuate grooves (9) are provided around the sides of the valve flange (1) and the pipeline flange (2), and the arcuate grooves (9) are force application points for rotating the valve flange (1) and the pipeline flange (2).

7. A valve flange connection structure according to claim 6, characterized in that: A rotating rod (13) is provided on the sealing cap (11), and grooves (14) are provided on both sides of the rotating rod (13).

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