Valve linkage device
By designing a valve linkage device, cross-regional valve control can be achieved through linkage mechanism and mechanical transmission. This solves the problem that external operators have difficulty effectively controlling internal valves, improves the flexibility and safety of emergency response, and is suitable for flammable and explosive environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 蒙牛乳业(唐山)有限责任公司
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-26
AI Technical Summary
In existing technologies, it is difficult for external operators to respond quickly and effectively control internal valves, resulting in delayed emergency response of the conveying system in the event of failure or sudden events, lack of flexibility and reliability, and threatening conveying safety.
A valve linkage device was designed to achieve cross-regional valve control through linkage mechanism and mechanical transmission. Combining manual and electric drive methods, and utilizing explosion-proof gears and chain transmission, it ensures operational safety and reliability.
It enables reliable valve control across regions, improves the flexibility and safety of emergency response, is suitable for flammable and explosive environments, and ensures the safety of operators and the stability of the system.
Smart Images
Figure CN224283628U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valve technology, and in particular to a valve linkage device. Background Technology
[0002] In the field of energy transportation (such as natural gas, steam, and ammonia), the continuity and stability of the transportation process are core requirements for ensuring a secure energy supply. Currently, most transportation systems rely on internal valves for media control. However, when valves malfunction or require emergency intervention due to external events, external operators lack direct control means, making it difficult to respond quickly and take effective measures. This results in delayed emergency response, a lack of flexibility and reliability under complex operating conditions, and a serious threat to transportation safety. Summary of the Invention
[0003] This utility model provides a valve linkage device, which aims to solve the problem that external operators have difficulty effectively controlling internal valves in the prior art.
[0004] This utility model provides a valve linkage device, including:
[0005] A valve, suitable for installation in a pipeline, wherein the valve is located in the first working chamber;
[0006] The linkage mechanism includes a drive component and a linkage component. The drive component is installed in a second working chamber and includes a housing, a worm gear, and a worm wheel. The housing has an installation space and a first opening communicating with the installation space. The worm gear and the worm wheel are meshed and installed within the installation space. The first end of the worm gear passes through the first opening. The first end of the worm gear is adapted to be connected to the valve stem of the valve via the linkage component. The valve is opened or closed when the worm gear or the worm wheel is driven.
[0007] According to the present invention, a valve linkage device is provided, wherein the linkage component includes a first gear, a second gear and a chain, the first gear is adapted to be installed on the valve stem, the second gear is installed on the first end of the worm gear, and the first gear and the second gear are connected by the chain.
[0008] According to the present invention, a valve linkage device is provided in which the first working chamber is connected to the second working chamber through a through hole, and the chain passes through the through hole.
[0009] According to the present invention, a valve linkage device is provided, wherein the chain is an explosion-proof chain, and the first gear and the second gear are explosion-proof gears.
[0010] According to the valve linkage device provided by this utility model, the housing is further provided with a second opening communicating with the installation space, and the second end of the worm gear is inserted into the second opening.
[0011] According to the valve linkage device provided by this utility model, the driving assembly further includes a driving component and a transmission component, wherein the driving component is connected to the second end of the worm gear through the transmission component.
[0012] According to the present invention, a valve linkage device is provided, wherein the driving component includes a drive motor, the transmission component includes a third gear and a fourth gear, the third gear is mounted on the output shaft of the drive motor, the fourth gear is mounted on the second end of the worm gear, and the third gear and the fourth gear are meshed together.
[0013] According to the valve linkage device provided by this utility model, it further includes:
[0014] A valve opening sensor is installed on the valve to detect the valve opening degree.
[0015] An alarm and a control mainboard are provided. The alarm is installed in the second work area, and the alarm, the drive unit, and the valve opening sensor are all electrically connected to the control mainboard.
[0016] According to the valve linkage device provided by this utility model, the housing is further provided with a third opening communicating with the installation space, and the drive component further includes an auxiliary component, which is connected to the end face of the worm gear and passes through the third opening.
[0017] According to the valve linkage device provided by this utility model, the driving component further includes a handwheel, which is installed at the end of the auxiliary component away from the worm gear.
[0018] The valve linkage device provided by this utility model allows operators in a second working chamber to manually or electrically control the worm gear or worm wheel to operate when the valve needs to be opened or closed. Specifically, after the operator rotates the worm wheel or drives the worm gear to rotate, the power is transmitted through the linkage mechanism and ultimately acts on the valve stem located in the first working chamber, driving the valve stem to rotate, thereby realizing the opening or closing action of the valve. In this way, by combining spatial isolation with mechanical transmission, both the safety of the operator is ensured and reliable control of valves across different areas is achieved. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the valve linkage device provided by this utility model.
[0021] Figure 2 This is a schematic diagram of the structure of the drive component provided by this utility model.
[0022] Figure 3 This is a structural schematic diagram of the valve provided by this utility model.
[0023] Figure label:
[0024] 1. Valve; 11. Valve stem; 2. Pipeline; 3. Linkage mechanism; 31. Drive assembly; 311. Housing; 312. Worm gear; 313. Auxiliary parts; 314. Handwheel; 315. Drive motor; 32. Linkage assembly; 321. Chain; 322. Second gear; 323. First gear; 4. Alarm; 5. Control main board. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] like Figure 1 , Figure 2 and Figure 3As shown, the valve linkage device of this utility model embodiment includes: a valve 1 and a linkage mechanism 3. The valve 1 is suitable for installation on the pipeline 2 and is located in a first working chamber. The linkage mechanism 3 includes a drive assembly 31 and a linkage assembly 32. The drive assembly 31 is installed in a second working chamber and includes a housing 311, a worm gear 312, and a worm wheel. The housing 311 is provided with an installation space and a first opening communicating with the installation space. The worm gear 312 and the worm wheel are meshed and connected, and are both installed in the installation space. That is, the housing 311 is a closed shell used to accommodate the worm gear 312 and the worm wheel, providing protection and support. The first end of the worm gear 312 passes through the first opening, and the first end of the worm gear 312 is adapted to be connected to the valve stem 11 of the valve 1 via the linkage assembly 32; wherein, when the worm gear 312 or the worm wheel is driven, the valve 1 is opened or closed.
[0027] It should be noted that valve 1 is suitable for installation in pipeline 2 to control the flow of fluid. Valve 1 is located in the first working chamber, which is a relatively enclosed space. In case of an emergency in pipeline 2 or valve 1, it is difficult for relevant personnel to enter the first working chamber to shut down valve 1. The drive assembly 31 is installed in the second working chamber, which is independent of the first working chamber.
[0028] In practical applications, when valve 1 needs to be opened or closed, the operator can control the worm gear 312 or worm wheel manually or electrically from the second working area. Specifically, after the operator rotates the worm wheel or drives the worm gear 312 to rotate, the power is transmitted through the linkage mechanism 3, ultimately acting on the valve stem 11 of valve 1 located in the first working area, driving the valve stem 11 to rotate, thereby realizing the opening or closing action of valve 1. In this way, by combining spatial isolation with mechanical transmission, both the safety of the operator is ensured and reliable control of valve 1 across different areas is achieved.
[0029] In an optional embodiment, the housing 311 is further provided with a second opening communicating with the installation space, and the second end of the worm gear 312 is inserted into the second opening.
[0030] It should be noted that a second opening is provided on the opposite side of the housing 311 from the first opening, for the second end of the worm gear 312 to pass through. The second end of the worm gear 312 is used to mount a drive device (such as a motor) to output power to the worm gear 312.
[0031] Understandably, both ends of the worm gear 312 can be fixed to the housing 311 by bearings to improve transmission stability and reduce vibration and wear.
[0032] In practical applications, such as Figure 1 and Figure 2As shown, the drive assembly 31 also includes a drive component and a transmission component. The drive component is connected to the second end of the worm gear 312 via the transmission component. For example, the drive component includes a drive motor 315, and the transmission component includes a third gear and a fourth gear. The third gear is mounted on the output shaft of the drive motor 315, and the fourth gear is mounted on the second end of the worm gear 312. The third gear and the fourth gear are meshed together.
[0033] It should be noted that the third gear is mounted on the output shaft of the drive motor 315 and serves as the driving gear. The fourth gear is mounted on the second end of the worm gear 312 and serves as the driven gear.
[0034] In optional embodiments, such as Figure 1 and Figure 2 As shown, the valve linkage device of this utility model embodiment further includes: a valve 1 opening degree sensor, an alarm 4, and a control main board 5. The valve 1 opening degree sensor is installed on valve 1 to detect the opening degree of valve 1; the alarm 4 is installed in the second working chamber, and the alarm 4, the driving component, and the valve 1 opening degree sensor are all electrically connected to the control main board 5.
[0035] It should be noted that the control motherboard 5 has a built-in PLC program, which has a built-in threshold comparison module. By comparing the actual opening degree with the target value, it outputs an alarm signal to the alarm 4. For example, when the opening degree value detected by the valve 1 opening degree sensor indicates that the valve 1 is completely closed, the control motherboard 5 can control the alarm 4 to issue an audible and visual alarm, prompting the operator in the second work room that the valve 1 has been closed and subsequent operations can be stopped.
[0036] Understandably, the control board 5 can also control the drive motor 315 to close the valve 1 according to the operator's input instructions (such as remote control or local button). When the opening value detected by the valve 1 opening sensor indicates that the valve 1 is completely closed, the control board 5 can also control the drive motor 315 to stop operating according to the opening value of the valve 1 opening sensor.
[0037] In optional embodiments, such as Figure 1 and Figure 2 As shown, the housing 311 also has a third opening communicating with the installation space. The drive assembly 31 further includes an auxiliary component 313, which is connected to the end face of the worm gear and passes through the third opening. The auxiliary component 313 can be a rod-shaped component, which can be fixed to the housing 311 by a bearing. For example, to facilitate driving the auxiliary component 313, the drive assembly 31 also includes a handwheel 314, which is mounted on the end of the auxiliary component 313 away from the worm gear.
[0038] It should be noted that when driven by the drive motor 315, the handwheel 314 rotates freely with the auxiliary component 313, without interfering with the electric operation. After the drive motor 315 is de-energized, the operator rotates the handwheel 314, which directly drives the worm gear to close valve 1 via the auxiliary component 313. In this way, the electric and manual dual-mode switching of valve 1 control is realized, significantly improving safety, reliability, and maintenance convenience.
[0039] In optional embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the linkage assembly 32 includes a first gear 323, a second gear 322 and a chain 321. The first gear 323 is adapted to be installed on the valve stem 11, and the second gear 322 is installed on the first end of the worm gear 312. The first gear 323 and the second gear 322 are connected by the chain 321.
[0040] It should be noted that the synchronous linkage between the valve stem 11 and the worm gear 312 is achieved through the cooperation of the first gear 323, the second gear 322 and the chain 321, which is suitable for high torque and long distance transmission scenarios and significantly improves the reliability and flexibility of valve 1 control.
[0041] In practical applications, in order to facilitate the installation of chain 321, the first working chamber is connected to the second working chamber through a through hole, and chain 321 passes through the through hole.
[0042] In addition, the linkage assembly 32 may also include a first pulley, a second pulley and a belt. The first pulley is adapted to be installed on the valve stem 11, the second pulley is installed on the first end of the worm gear 312, and the first pulley and the second pulley are connected by a belt.
[0043] In practical applications, to make the valve linkage device suitable for flammable and explosive industrial scenarios with high safety levels (such as chemical, oil, and natural gas fields), and to significantly improve the safety and reliability of valve 1 opening, the chain 321 is an explosion-proof chain 321, and the first gear 323 and the second gear 322 are explosion-proof gears.
[0044] It should be noted that the explosion-proof gears can be made of 316L stainless steel or high-strength alloy steel, possessing corrosion resistance and impact resistance to meet the requirements of explosion-proof environments. The explosion-proof gears utilize zinc-nickel alloy plating or PVD coating to enhance wear resistance and antistatic capabilities. Through carburizing and quenching or nitriding treatment, the tooth surface hardness reaches HRC55-60, ensuring transmission efficiency. Furthermore, the gear surface has no sharp corners, eliminating the risk of static electricity accumulation. The gear clearance meets explosion-proof standards to prevent spark generation.
[0045] Understandably, the chain plates of the explosion-proof chain 321 can be made of stainless steel 304 or high-strength engineering plastics (such as PA66+GF30), possessing flame-retardant and corrosion-resistant properties. The pins of the explosion-proof chain 321 are made of chrome-plated steel or ceramic-coated pins to reduce the coefficient of friction and minimize wear. The explosion-proof chain 321 uses explosion-proof grease (such as fluorinated grease) to prevent grease combustion at high temperatures. Furthermore, the chain 321 has no exposed metal on its surface to prevent sparks from friction or impact. The chain 321 has a reasonable tension design to prevent metal fatigue fracture caused by overload.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A valve linkage device, characterized in that, include: A valve, suitable for installation in a pipeline, wherein the valve is located in the first working chamber; The linkage mechanism includes a drive assembly and a linkage assembly. The drive assembly is installed in a second working chamber and includes a housing, a worm gear, and a worm wheel. The housing has an installation space and a first opening communicating with the installation space. The worm gear and the worm wheel are meshed and installed within the installation space. The first end of the worm gear passes through the first opening. The first end of the worm gear is adapted to be connected to the valve stem of the valve via the linkage assembly. The valve is opened or closed when the worm gear or the worm wheel is driven. The linkage assembly includes a first gear, a second gear, and a chain. The first gear is adapted to be mounted on the valve stem, and the second gear is mounted on the first end of the worm gear. The first gear and the second gear are connected by the chain.
2. The valve linkage device according to claim 1, characterized in that, The first work area is connected to the second work area through a through hole, and the chain passes through the through hole.
3. The valve linkage device according to claim 1, characterized in that, The chain is an explosion-proof chain, and the first gear and the second gear are explosion-proof gears.
4. The valve linkage device according to claim 1, characterized in that, The housing is also provided with a second opening communicating with the installation space, and the second end of the worm gear is inserted into the second opening.
5. The valve linkage device according to claim 4, characterized in that, The drive assembly further includes a drive component and a transmission component, wherein the drive component is connected to the second end of the worm gear via the transmission component.
6. The valve linkage device according to claim 5, characterized in that, The driving component includes a drive motor, and the transmission component includes a third gear and a fourth gear. The third gear is mounted on the output shaft of the drive motor, and the fourth gear is mounted on the second end of the worm gear. The third gear and the fourth gear are meshed together.
7. The valve linkage device according to claim 5, characterized in that, Also includes: A valve opening sensor is installed on the valve to detect the valve opening degree. An alarm and a control mainboard are provided. The alarm is installed in the second work area, and the alarm, the drive unit, and the valve opening sensor are all electrically connected to the control mainboard.
8. The valve linkage device according to claim 1, characterized in that, The housing is also provided with a third opening communicating with the installation space, and the drive assembly also includes an auxiliary component, which is connected to the end face of the worm gear and passes through the third opening.
9. The valve linkage device according to claim 8, characterized in that, The drive assembly also includes a handwheel, which is mounted on the end of the auxiliary component away from the worm gear.