Detachable corrosion-resistant RTO valve

Abstract

The utility model discloses a detachable corrosion-resistant RTO valve, and relates to the technical field of industrial valves. An air cylinder is arranged above the lift valve shell, a rainproof cover is arranged outside the air cylinder, the lift valve shell is composed of a valve body, valve covers and a mounting frame, the valve covers are arranged on the two sides of the valve body, the mounting frame is located on the outer sides of the valve covers, and dismounting holes distributed in a rectangular shape are formed in the valve covers and the mounting frame. The valve cover and the mounting frame are fixed to the valve body through bolts, a sealing assembly is arranged in the poppet valve shell, a connector short pipe communicated with an inner cavity of the poppet valve shell is arranged at the bottom of the poppet valve shell, and according to the scheme, the problems that a traditional valve is poor in corrosion resistance and difficult to maintain are solved.

Description

Technical Field

[0001] This utility model relates to the field of industrial valve technology, specifically to a detachable corrosion-resistant RTO valve. Background Technology

[0002] RTO valves, mainly including shut-off valves and lift valves, play a crucial role in the system. Shut-off valves are typically equipped with electric or pneumatic actuators. When abnormal pressure of the pipeline medium is detected, they can quickly close to cut off the flow of the medium, achieving remote flow control and ensuring system safety. They consist of components such as valve stem, valve disc, actuator, and sealing rings, and are widely used in scenarios such as natural gas pipelines.

[0003] For example, the Chinese authorized patent CN214838430U, entitled "An RTO Valve with a Soft Sealing Structure," includes a cylinder, a cylinder bracket, a push rod, a valve leaf, a lower soft sealing strip, and an upper metal sealing ring. The cylinder is fixed to the air duct by the cylinder bracket. The cylinder, push rod, and valve leaf are connected in sequence. Multiple guide rods are arranged parallel to each other on both sides of the push rod. The guide rods are fixedly connected to the air duct, and the valve leaf is slidably connected to the multiple guide rods. A lower soft sealing strip is installed on the valve leaf, and an upper metal sealing ring is installed on the ROT chamber at the corresponding position of the lower soft sealing strip. The contact surface between the lower soft sealing strip and the upper metal sealing ring is corrugated.

[0004] However, traditional RTO valves are prone to deterioration in sealing performance and even leakage during long-term use due to media corrosion and high-temperature oxidation, posing safety hazards to production. Furthermore, the maintenance and replacement of traditional valves often require complete removal from the pipeline, a cumbersome and time-consuming process that does not meet current needs. Therefore, we propose a detachable, corrosion-resistant RTO valve. Utility Model Content

[0005] The purpose of this invention is to provide a detachable corrosion-resistant RTO valve to solve the problems of poor corrosion resistance and difficult maintenance of traditional valves mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a detachable corrosion-resistant RTO valve, comprising a lift valve housing; a cylinder is disposed above the lift valve housing, and a rain cover is disposed outside the cylinder; the lift valve housing is composed of a valve body, a valve cover, and a mounting bracket; the valve cover is disposed on both sides of the valve body, and the mounting bracket is located outside the valve cover; both the valve cover and the mounting bracket have rectangularly distributed disassembly holes inside, and the valve cover and the mounting bracket are fixed to the valve body by bolts; a sealing assembly is disposed inside the lift valve housing; and a short interface pipe communicating with its inner cavity is disposed at the bottom of the lift valve housing.

[0007] Preferably, the sealing assembly includes a valve stem, a valve plate, an upper metal sealing ring, and a lower metal sealing ring. The valve stem is fixedly installed at the telescopic end of the cylinder. The valve plate is fixed to the outside of the valve stem by bolts. The upper metal sealing ring is fixed to the outer edge of the valve plate by bolts. The lower metal sealing ring is disposed at the bottom of the valve body cavity and is fixed to the valve body by bolts.

[0008] Preferably, guide rods are fixedly installed on both sides of the valve body cavity, the guide rods pass through the valve plate, and the valve plate and the guide rods are in sliding fit.

[0009] Preferably, a reinforcing frame is provided on the outside of the lifting valve housing, and the reinforcing frame is connected to the lifting valve housing through a G1-2 sealing element.

[0010] Preferably, the valve body, valve cover, and mounting bracket are all made of titanium alloy, and the surfaces of the valve stem, valve plate, upper metal sealing ring, and lower metal sealing ring are all provided with anti-corrosion coating.

[0011] Preferably, the cylinder is provided with a rain cover, which includes a first side cover and a second side cover. The upper ends of the first side cover and the second side cover are inserted and fixed, and the bottom of the first side cover and the second side cover are fixed to the lifting valve housing by bolts.

[0012] Preferably, a cylinder base is fixedly provided at the bottom of the cylinder, and the cylinder base is fixed to the lifting valve housing by bolts, and a limit switch sensor is provided on the outside of the cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The valve body and valve cover of this utility model are made of titanium alloy. Titanium alloy has a low density but high specific strength, making the valve lighter and more durable. Its excellent corrosion resistance can effectively resist the erosion of various corrosive media, extend the service life of the valve, and is especially suitable for highly corrosive working conditions. At the same time, a corrosion-resistant coating is applied to the surface of the valve stem, valve plate, upper metal sealing ring and lower metal sealing ring. The coating has excellent anti-corrosion performance and can form a dense and durable protective layer on the metal surface, effectively isolating the contact between corrosive gases and metal, reducing the occurrence of corrosion, effectively improving the corrosion resistance and service life of the valve, and ensuring the stable operation of the RTO system.

[0015] 2. This utility model simplifies the maintenance and replacement process. By designing a disassembly mechanism, the valve cover can be easily removed without removing the entire valve from the pipeline, thereby reducing the difficulty and time cost of maintenance and replacement.

[0016] 3. This utility model improves the reliability and safety of the valve. By optimizing the design of the sealing components, it improves the sealing performance of the valve, reduces the risk of leakage, and enhances the reliability and safety of the valve. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is an exploded view of the present invention;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 For the present utility model Figure 3 Schematic diagram of section AA;

[0021] Figure 5 This is a bottom view of the present invention.

[0022] In the diagram: 1. Rain cover; 101. First side cover; 102. Second side cover; 2. Interface short pipe; 3. Lift valve housing; 301. Valve body; 302. Valve cover; 303. Mounting bracket; 4. Removal hole; 5. Valve stem; 6. Valve plate; 7. Cylinder; 8. Cylinder base; 9. Limit switch sensor plate; 10. Reinforcing bracket; 11. G1-2 seal; 12. Upper metal sealing ring; 13. Lower metal sealing ring; 14. Guide rod. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5 An embodiment of this utility model provides: a detachable corrosion-resistant RTO valve, including a lift valve housing 3; a cylinder 7 is provided on the top of the lift valve housing 3, and a rain cover 1 is provided on the outside of the cylinder 7. The lift valve housing 3 is composed of a valve body 301, a valve cover 302 and a mounting bracket 303. The valve cover 302 is provided on both sides of the valve body 301, and the mounting bracket 303 is located on the outside of the valve cover 302. The valve cover 302 and the mounting bracket 303 are provided with rectangularly distributed disassembly holes 4 inside. The valve cover 302 and the mounting bracket 303 are fixed to the valve body 301 by bolts. A sealing assembly is provided inside the lift valve housing 3, and a short interface pipe 2 communicating with its inner cavity is provided at the bottom of the lift valve housing 3.

[0025] By designing a disassembly mechanism, the valve cover can be easily removed without having to remove the entire valve from the pipeline, thereby reducing the difficulty and time cost of maintenance and replacement.

[0026] Please see Figure 2 and Figure 4 The sealing assembly includes a valve stem 5, a valve plate 6, an upper metal sealing ring 12, and a lower metal sealing ring 13. The valve stem 5 is fixedly installed at the telescopic end of the cylinder 7. The valve plate 6 is fixed to the outside of the valve stem 5 by bolts. The upper metal sealing ring 12 is fixed to the outer edge of the valve plate 6 by bolts. The lower metal sealing ring 13 is located at the bottom of the inner cavity of the valve body 301 and is fixed to the valve body 301 by bolts. This ensures the stability and sealing of the valve during the opening and closing process, effectively prevents media leakage, improves the corrosion resistance and service life of the valve, and at the same time, this structure is easy to disassemble and maintain, reducing maintenance costs.

[0027] Please see Figure 4 Guide rods 14 are fixedly installed on both sides of the inner cavity of valve body 301. The guide rods 14 pass through valve plate 6, and valve plate 6 slides with guide rods 14 to improve the stability of guide rod 14 movement.

[0028] Please see Figure 1 The lifting valve housing 3 is provided with a reinforcing frame 10 on the outside, and the reinforcing frame 10 is connected to the lifting valve housing 3 through the G1-2 sealing element 11, which further improves the robustness of the combined lifting valve housing 3 and ensures its long-term stable operation.

[0029] Furthermore, the valve body 301, valve cover 302, and mounting bracket 303 are all made of titanium alloy, and the surfaces of the valve stem 5, valve plate 6, upper metal sealing ring 12, and lower metal sealing ring 13 are all coated with anti-corrosion coating.

[0030] Please see Figure 1 and Figure 2 The cylinder 7 is provided with a rain cover 1. The rain cover 1 includes a first side cover 101 and a second side cover 102. The upper ends of the first side cover 101 and the second side cover 102 are inserted and fixed, and the bottom of the first side cover 101 and the second side cover 102 are fixed to the lifting valve housing 3 by bolts. This effectively prevents external environmental factors such as rain and moisture from corroding the cylinder 7 and extends the service life of the cylinder.

[0031] Please see Figure 1A cylinder base 8 is fixedly mounted on the bottom of cylinder 7, and the cylinder base 8 is bolted to the lifting valve housing 3. A limit switch sensor 9 is installed on the outside of cylinder 7, which enhances the stability of cylinder 7 and ensures that it is not easily shaken or displaced during operation. Moreover, the tight connection between cylinder 7 and lifting valve housing 3 via bolts further enhances the structural strength of the entire valve. At the same time, the limit switch sensor 9 on the outside of cylinder 7 can precisely control the extension and retraction stroke of cylinder 7, ensuring accurate opening and closing of the valve and improving the reliability and safety of valve operation.

[0032] Working Principle: During operation, the extension and retraction of cylinder 7 drives the valve stem 5 and the valve plate 6 fixed to the outside of the valve stem 5 to move up and down. Guided by guide rod 14, valve plate 6 slides stably. Simultaneously, valve plate 6 tightly engages with upper metal sealing ring 12 and lower metal sealing ring 13, ensuring the stability and sealing of the valve during opening and closing, effectively preventing media leakage. The valve body 301, valve cover 302, and mounting bracket 303 are made of titanium alloy, and components such as the valve stem 5 and valve plate 6 with anti-corrosion coatings improve the valve's corrosion resistance and service life. Furthermore, the designed disassembly mechanism allows for easy removal of the valve cover without disassembling the entire valve, reducing the difficulty and time cost of maintenance and replacement.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A detachable corrosion-resistant RTO valve, comprising a lift valve housing (3); characterized in that: A cylinder (7) is provided on the top of the lifting valve housing (3). A rain cover (1) is provided on the outside of the cylinder (7). The lifting valve housing (3) is composed of a valve body (301), a valve cover (302) and a mounting bracket (303). The valve cover (302) is located on both sides of the valve body (301). The mounting bracket (303) is located on the outside of the valve cover (302). The valve cover (302) and the mounting bracket (303) are provided with rectangularly distributed disassembly holes (4). The valve cover (302) and the mounting bracket (303) are fixed to the valve body (301) by bolts. A sealing assembly is provided inside the lifting valve housing (3). A short interface pipe (2) communicating with its inner cavity is provided at the bottom of the lifting valve housing (3).

2. The detachable corrosion-resistant RTO valve according to claim 1, characterized in that: The sealing assembly includes a valve stem (5), a valve plate (6), an upper metal sealing ring (12), and a lower metal sealing ring (13). The valve stem (5) is fixedly installed at the telescopic end of the cylinder (7). The valve plate (6) is fixed to the outside of the valve stem (5) by bolts. The upper metal sealing ring (12) is fixed to the outer edge of the valve plate (6) by bolts. The lower metal sealing ring (13) is located at the bottom of the inner cavity of the valve body (301) and is fixed to the valve body (301) by bolts.

3. A detachable corrosion-resistant RTO valve according to claim 2, characterized in that: Guide rods (14) are fixedly installed on both sides of the inner cavity of the valve body (301). The guide rods (14) pass through the valve plate (6), and the valve plate (6) and the guide rods (14) are in sliding fit.

4. A detachable corrosion-resistant RTO valve according to claim 1, characterized in that: The lifting valve housing (3) is provided with a reinforcing frame (10) on the outside, and the reinforcing frame (10) is connected to the lifting valve housing (3) through a G1-2 sealing member (11).

5. A detachable corrosion-resistant RTO valve according to claim 1, characterized in that: The valve body (301), valve cover (302) and mounting bracket (303) are all made of titanium alloy, and the surfaces of the valve stem (5), valve plate (6), upper metal sealing ring (12) and lower metal sealing ring (13) are all provided with anti-corrosion coating.

6. A detachable corrosion-resistant RTO valve according to claim 2, characterized in that: The cylinder (7) is provided with a rain cover (1) on its exterior. The rain cover (1) includes a first side cover (101) and a second side cover (102). The upper ends of the first side cover (101) and the second side cover (102) are inserted and fixed, and the bottoms of the first side cover (101) and the second side cover (102) are fixed to the lifting valve housing (3) by bolts.

7. A detachable corrosion-resistant RTO valve according to claim 1, characterized in that: The bottom of the cylinder (7) is fixedly provided with a cylinder base (8), and the cylinder base (8) is fixed to the lifting valve housing (3) by bolts. The cylinder (7) is provided with a limit switch sensing piece (9) on its outside.

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