Large-diameter vertical valve guide rod

Abstract

The present application relates to the field of large-diameter valve driving, and discloses a large-diameter vertical valve guide rod, which comprises a portal, which is the basis of the whole device and is used for assembling and bearing other structural members; a hanging mechanism, which is located on the inner side of the portal and is used for assembling a valve; a counterweight mechanism, which is located on the inner side of the portal and is used for adjusting the balance of the whole device; and a driving mechanism, which is located on the outer side of the portal and is used for driving the hanging mechanism to move; the driving mechanism comprises a driving device and two groups of chain wheels II, and the driving device is installed on the outer side of the portal. The guide rod in the hanging mechanism provides hard guide support for the movement of the hanging bracket, the hanging bracket smoothly slides along the guide rod, effectively avoids shaking and deviation, and enables the connecting column to accurately drive the valve plate to move, so that the opening and closing degree of the valve is accurately controlled, and the accuracy of the valve action can be ensured even under complex working conditions.

Description

Technical Field

[0001] This invention relates to the field of large-diameter valve actuation technology, specifically to a large-diameter vertical valve guide rod. Background Technology

[0002] Large-diameter vertical valves are key equipment for controlling the transport of fluid media in numerous industrial processes, and are widely used in petroleum, chemical, and power industries. Their precise and stable opening and closing operation is crucial for ensuring the safe and efficient operation of production lines. With the continuous advancement of industrial technology, the performance requirements for large-diameter vertical valve actuators are also constantly increasing.

[0003] Most existing large-diameter vertical valve actuators rely on a simple chain-driven flexible connection to transmit power and drive the valve. Their structure typically uses a standard electric motor as the power source, with the motor's output shaft connected to a sprocket. The chain wraps around the sprocket and the sprocket at the valve end, thereby driving the valve plate to open and close.

[0004] In practical industrial applications, relying solely on chain-driven flexible connections is a major drawback. Due to the inherent flexibility of chains, they cannot provide precise and stable guidance for the valve plate when transmitting power. When the motor starts running, the chain is prone to slackness and vibration, making it difficult to accurately control the movement trajectory of the valve plate and significantly reducing the accuracy of valve opening and closing. In oil pipelines used for oil extraction, inaccurate valve opening and closing can lead to crude oil leaks or flow control errors, causing serious safety accidents. Moreover, under long-term tension and frequent start-stop impacts, the chain experiences accelerated wear, further weakening the stability of the transmission and shortening the service life of the drive unit. Therefore, this invention provides a large-diameter vertical valve guide rod to address the shortcomings of existing technologies. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a large-diameter vertical valve guide rod, which solves the problem of poor stability during use caused by the use of a chain-driven flexible connection in existing large-diameter vertical valve drive devices.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a large-diameter vertical valve guide rod, including a gantry, wherein the gantry is the foundation of the entire device and is used to assemble and support other structural components;

[0007] A suspension mechanism, located inside the gantry, is used to assemble valves;

[0008] A counterweight mechanism, located inside the gantry, is used to adjust the overall balance of the device;

[0009] Driving mechanism, which is located at the outer side of the portal, is used to drive the hanging mechanism to move; the driving mechanism comprises a driving device and two sets of chain wheels two, the driving device is installed at the outer side of the portal, the driving device is a combination of a motor and a speed reducer, and the output end of the driving device is fixedly connected with the two chain wheels one.

[0010] Preferably, two mounting holes are arranged in the interior of the portal, and the two sets of chain wheels two are installed in the interior of the mounting holes, and the number of each set of chain wheels two is two, and the outer periphery of the chain wheel one and one set of chain wheels two is sleeved with a chain.

[0011] Preferably, the hanging mechanism comprises a rod seat, the rod seat is installed at the inner side of the portal, a guide rod is installed in the interior of the rod seat, and one end of the guide rod is fixedly connected with the inner side of the portal.

[0012] Preferably, the outer side of the portal is slidably connected with a hanging frame, a connecting column is installed at the outer side of the hanging frame, and the bottom of the connecting column is fixedly connected with a valve plate in the interior of the large-diameter valve, and the outer side of the hanging frame is fixedly connected with the exterior of the chain.

[0013] Preferably, the bottom of the portal is fixedly connected with a connecting plate one, the outer side of the connecting plate one is connected with the outer side of the large-diameter valve through bolts, the inner side of the portal is fixedly connected with a combined rod, the bottom of the combined rod is fixedly connected with a connecting plate two, and the outer side of the connecting plate two is connected with the outer side of the large-diameter valve through bolts.

[0014] Preferably, the counterweight mechanism comprises a connecting rod and two counterweight blocks, the two ends of the connecting rod are fixedly connected at the inner side of the portal, the outer side of the connecting rod is fixedly connected with the counterweight blocks, the bottom of the portal is provided with a hydraulic cylinder, and the top of the portal is fixedly connected with two hooks.

[0015] The application provides a large-diameter vertical valve guide rod.

[0016] 1、The driving device of the combination of the motor and the speed reducer in the driving mechanism can provide strong and accurate power for the chain wheel one, and the two sets of chain wheels two installed in the high-precision mounting holes and the chain with high strength and wear resistance form a reliable transmission link to ensure stable power transmission.

[0017] 2. The present invention uses the connecting rod in the counterweight mechanism to cooperate with two precisely counterweight blocks. It is finely adjusted according to the overall center of gravity distribution of the gantry, the hanging mechanism and the valve to counteract the unbalanced force generated during the opening and closing of the valve, so that the device is always in a stable state during operation, reducing the risk of component wear and failure caused by imbalance, and extending the service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention;

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

[0020] Figure 3 This is a schematic diagram of the bottom structure of the gantry of the present invention.

[0021] The components are as follows: 1. Gantry; 2. Drive unit; 3. Sprocket 1; 4. Sprocket 2; 5. Guide rod; 6. Rod seat; 7. Hanger; 8. Large-diameter valve; 9. Connecting rod; 10. Counterweight; 11. Combination rod; 12. Hydraulic cylinder; 13. Mounting hole; 14. Connecting plate 1; 15. Connecting plate 2; 16. Chain; 17. Hook. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides a large-diameter vertical valve guide rod, including a gantry 1, which serves as the foundation of the entire device and is used to assemble and support other structural components; a suspension mechanism located inside the gantry 1, used to assemble the valve; a counterweight mechanism located inside the gantry 1, used to adjust the overall balance of the device; and a drive mechanism located outside the gantry 1, used to drive the suspension mechanism to move. The drive mechanism includes a drive device 2 and two sets of sprockets 4. The drive device 2 is installed on the outside of the gantry 1 and is a combination of a motor and a reducer. The output end of the drive device 2 is fixedly connected to two sprockets 3.

[0024] Specifically, the gantry 1, as the basic structure of the entire device, is typically welded from high-strength steel to ensure sufficient rigidity and load-bearing capacity for assembling and supporting other structural components. Its shape is precisely calculated based on the size of the large-diameter valve 8, the installation environment, and the layout requirements of subsequent components, ensuring both stability and ease of operation and maintenance. The suspension mechanism is located inside the gantry 1 and is used to assemble the valve. This suspension mechanism includes a rod seat 6, which is installed inside the gantry 1 and typically secured with high-strength bolts to ensure stable installation. A guide rod 5 is installed inside the rod seat 6. One end of the guide rod 5 is fixedly connected to the inner side of the gantry 1. The guide rod 5 is made of high-quality alloy steel and has good straightness and wear resistance. It provides precise guidance for the subsequent sliding of the hanger 7, ensuring the smoothness of the valve driving process. In the field of large-diameter rising stem vertical gate valves such as blast furnace hot blast stove gate valves, the transmission part generally adopts closed-loop sleeve roller chain transmission, which has poor transmission smoothness. However, a special guide straight rod structure is added, which allows the valve stem of the gate valve to move along a straight line. Compared with the traditional chain transmission method, it avoids the failure of the proximity switch feedback signal caused by chain vibration, which causes the control system to lose the signal source. This greatly improves the stability of the overall structure. The hanger 7 is slidably connected to the outside of the gantry 1. A connecting column is installed on the outside of the hanger 7, and the bottom of the connecting column is fixedly connected to the valve plate inside the large-diameter valve 8. This connection method ensures that the hanger 7 can accurately drive the valve plate to move when it moves, realizing the opening and closing control of the valve. The outer side of the hanger 7 is fixedly connected to the outer side of the chain 16. The chain 16 is a high-strength, wear-resistant industrial chain that can withstand large tensile forces and ensure the reliability of the transmission.

[0025] Please see the appendix Figure 1 - Appendix Figure 3The gantry 1 has two mounting holes 13 inside, and two sets of sprockets 4 are installed inside the mounting holes 13. Each set of sprockets 4 has two sprockets. A chain 16 is fitted around the outer periphery of the sprockets 1 and sprockets 4. The suspension mechanism includes a rod seat 6, which is installed on the inner side of the gantry 1. A guide rod 5 is installed inside the rod seat 6, and one end of the guide rod 5 is fixedly connected to the inner side of the gantry 1. A hanger 7 is slidably connected to the outer side of the gantry 1. A connecting column is installed on the outer side of the hanger 7, and the valve plate inside the large-diameter valve 8 at the bottom of the connecting column is fixedly connected. The outer side of the hanger 7 is fixedly connected to the outer side of the chain 16. A connecting plate 14 is fixedly connected to the bottom of the gantry 1. The outer side of the connecting plate 14 is bolted to the outer side of the large-diameter valve 8. A combination rod 11 is fixedly connected to the inner side of the gantry 1. A connecting plate 15 is fixedly connected to the bottom of the combination rod 11. The outer side of the connecting plate 15 is bolted to the outer side of the large-diameter valve 8. The counterweight mechanism includes a connecting rod 9 and two counterweight blocks 10. The two ends of the connecting rod 9 are fixedly connected to the inner side of the gantry 1. The outer side of the connecting rod 9 is fixedly connected to the counterweight blocks 10. A hydraulic cylinder 12 is installed at the bottom of the gantry 1. Two hooks 17 are fixedly connected to the top of the gantry 1.

[0026] Specifically, the counterweight mechanism, located inside the gantry 1, is used to adjust the overall balance of the device. The counterweight mechanism includes a connecting rod 9 and two counterweight blocks 10. The two ends of the connecting rod 9 are fixedly connected to the inside of the gantry 1 using robust welding or bolt connections to ensure structural stability. The counterweight blocks 10 are fixedly connected to the outside of the connecting rod 9. The weight of the counterweight blocks 10 is precisely calculated and adjusted based on the overall center of gravity distribution of the gantry 1, the hanging mechanism, and the valves, to counteract the unbalanced forces generated during valve opening and closing, ensuring the device remains stable during operation. A hydraulic cylinder 12 is installed at the bottom of the gantry 1. The hydraulic cylinder 12 provides auxiliary support or fine-tuning functions during device installation, commissioning, or special working conditions, further enhancing the adaptability and stability of the device. Two hooks 17 are fixedly connected to the top of the gantry 1. The hooks 17 are made of high-strength alloy material, possessing sufficient load-bearing capacity, and their shape facilitates connection to external lifting equipment. The drive mechanism, located outside the gantry 1, is used to drive the movement of the hanging mechanism. The drive mechanism includes a drive device 2 and two sets of sprockets 4. The drive device 2 is installed on the outside of the gantry 1. The drive device 2 is a combination of a motor and a reducer. The motor provides the power source, and the reducer converts the high-speed rotation of the motor into a suitable torque output. Two sprockets 3 are fixedly connected to the output end of the drive device 2.

[0027] Working principle: The gantry 1 is suspended by two hooks 17. Then, the connecting plate 14 and the connecting plate 2 15 are assembled with the large-diameter valve 8. Then, a counterweight 10 is set on the outside of the connecting rod 9 to maintain the stability of the overall structure. Then, the drive device 2 is started to drive the two sprockets 3 to rotate, which in turn drives the two chains 16 to move. Then, the hanger 7 is pulled to move upward, which in turn causes the connecting column to drive the valve plate to move. In this way, the soft connection of the chain 16 can be transformed into a hard-guided drive mode, which is more stable and efficient.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-diameter vertical valve guide rod, characterized in that, include: The gantry (1) is the foundation of the entire device and is used to assemble and support other structural components; A suspension mechanism, located inside the gantry (1), is used to assemble valves; A counterweight mechanism, located inside the gantry (1), is used to adjust the overall balance of the device; The drive mechanism is located on the outside of the gantry (1) and is used to drive the suspension mechanism to move. The drive mechanism includes a drive device (2) and two sets of sprockets (4). The drive device (2) is installed on the outside of the gantry (1). The drive device (2) is a combination of a motor and a reducer. The output end of the drive device (2) is fixedly connected to two sprockets (3).

2. The large-diameter vertical valve guide rod according to claim 1, characterized in that, The gantry (1) has two mounting holes (13) inside, and two sets of sprockets (4) are installed inside the mounting holes (13). Each set of sprockets (4) has two sprockets. The outer circumference of the sprocket (3) and the set of sprockets (4) is fitted with a chain (16).

3. The large-diameter vertical valve guide rod according to claim 1, characterized in that, The suspension mechanism includes a rod seat (6), which is installed on the inner side of the gantry (1). A guide rod (5) is installed inside the rod seat (6), and one end of the guide rod (5) is fixedly connected to the inner side of the gantry (1).

4. A large-diameter vertical valve guide rod according to claim 3, characterized in that, A hanger (7) is slidably connected to the outside of the gantry (1). A connecting column is installed on the outside of the hanger (7), and the valve plate inside the large-diameter valve (8) at the bottom of the connecting column is fixedly connected. The outside of the hanger (7) is fixedly connected to the outside of the chain (16).

5. A large-diameter vertical valve guide rod according to claim 4, characterized in that, A connecting plate 1 (14) is fixedly connected to the bottom of the gantry (1). The outer side of the connecting plate 1 (14) is connected to the outer side of the large-diameter valve (8) by bolts. A combination rod (11) is fixedly connected to the inner side of the gantry (1). A connecting plate 2 (15) is fixedly connected to the bottom of the combination rod (11). The outer side of the connecting plate 2 (15) is connected to the outer side of the large-diameter valve (8) by bolts.

6. A large-diameter vertical valve guide rod according to claim 1, characterized in that, The counterweight mechanism includes a connecting rod (9) and two counterweight blocks (10). The two ends of the connecting rod (9) are fixedly connected to the inner side of the gantry (1), and the outer side of the connecting rod (9) is fixedly connected to the counterweight blocks (10). A hydraulic cylinder (12) is installed at the bottom of the gantry (1), and two hooks (17) are fixedly connected to the top of the gantry (1).

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