Valve device and industrial plant

Abstract

The application provides a valve device and an industrial equipment, and relates to the technical field of valve control. The valve device comprises a valve body, a valve core structure, a transmission assembly and a connecting piece. The valve core structure is arranged in the internal cavity of the valve body, and the valve body is provided with a valve port. The first end of the connecting piece is connected with the transmission assembly, the second end of the connecting piece is connected with the valve body, the transmission assembly is connected with the valve core structure through the connecting piece, the transmission assembly is used for driving the valve core structure to move away from / come close to the valve port, and the valve core structure is used for closing / opening the valve port. The first double-layer sealing structure is arranged at the sealing position of the valve body. The second double-layer sealing structure is arranged at the sealing position of the connecting piece. The constituent materials of the valve body, the valve core structure, the transmission assembly and the connecting piece are all metal materials. The valve device is prepared by using all-metal materials, and the internal cavity of the valve body of the valve device is sealed by arranging multiple double-layer sealing structures, so that the stability of the valve device in the working environment of radiation, high temperature or corrosion is effectively improved.

Description

Technical Field

[0001] This application relates to the field of valve control technology, and more specifically, to a valve device and industrial equipment. Background Technology

[0002] In certain specialized industries, such as the nuclear industry, the sealed medium may be radioactive, or the process may generate high-temperature or corrosive chemical gases. While existing gate valve structures with sealing mechanisms use metal for the valve body and internal components, some sealing materials are made of rubber or PTFE. These materials may fail in these radioactive, high-temperature, or corrosive environments, resulting in an inability to provide a seal and adversely affecting the production process, thus failing to meet the sealing requirements of these special applications. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a valve device and industrial equipment to improve the problem of achieving stable sealing in special application environments by valves in the prior art.

[0004] To address the aforementioned problems, in a first aspect, embodiments of this application provide a valve device, which includes a valve body, a valve core structure, a transmission assembly, and a connecting component; The valve core structure is disposed in the internal cavity of the valve body, and the valve body is provided with a valve port; The first end of the connector is connected to the transmission assembly, the second end of the connector is connected to the valve body, the transmission assembly passes through the connector and is connected to the valve core structure, the transmission assembly is used to drive the valve core structure to move away from / near the valve port, and the valve core structure is used to close / open the valve port; The valve body is provided with a first double-layer sealing structure at the sealing position; A second double-layer sealing structure is provided at the sealing position of the connector; The valve body, the valve core structure, the transmission assembly, and the connecting parts are all made of metal materials.

[0005] In the aforementioned process, the transmission component drives the valve core structure to move within the internal cavity of the valve body, thereby closing or opening the valve port on the valve body based on the position of the valve core structure. The valve body, valve core structure, transmission component, and connecting parts in the valve device are all made of all-metal materials. Furthermore, considering the connection between the internal cavity of the valve body and the connecting parts, two corresponding double-layer sealing structures can be installed at the two sealing positions on the valve body and connecting parts to seal the internal cavity of the valve body, thereby reducing the adverse effects of leakage of the controlled substances from the valve body to the outside. Correspondingly, the two double-layer sealing structures on the valve body and connecting parts are also made of all-metal materials. This allows the all-metal valve device to adapt to special application environments such as radiation, high temperature, or corrosion, reducing the adverse effects of failure under special application environments, improving the stability of the valve device in special application environments, meeting the sealing requirements of special application environments, and improving the safety of the manufacturing process.

[0006] Optionally, the first double-layer sealing structure includes: a first sealing element, a second sealing element, and a first leak detection port; The first sealing element is pressed and fixed on the valve body at a first position near the internal cavity, and the first sealing element is used to provide a first-level seal for the internal cavity; The second seal is pressed and fixed on the valve body at a second position away from the internal cavity, and the second seal is used to provide a second-level seal for the internal cavity; The first end of the first leak detection port is located at a third position between the first position and the second position, and the second end of the first leak detection port is connected to an external processing device; The first leak detection port is used to detect and transmit leaked material from the internal cavity; The first seal and the second seal are metal seals.

[0007] In the above implementation process, the first double-layer sealing structure may include a first sealing element, a second sealing element, and a first leak detection port. At the sealing position of the valve body, the first sealing element is pressed and fixed to a first position on the valve body near the internal cavity by multiple assembled parts on the valve body, thereby providing a first-level seal for the internal cavity. Considering the possibility of leakage from the first-level seal, at the sealing position of the valve body, the second sealing element can also be pressed and fixed to a second position on the valve body away from the internal cavity by multiple assembled parts on the valve body, thereby providing a second-level seal for substances that may leak from the first-level seal into the internal cavity. Both sealing elements are metal sealing elements to meet the working requirements of special application environments such as radiation, high temperature, or corrosion. Furthermore, in order to test the sealing effect of the two seals and recover any substances that may leak from the first-stage seal, the first end of the first leak detection port is located between the first and second positions, i.e., between the first and second seals, and the second end is connected to external processing equipment. This allows for the testing of the two-stage sealing effect of the first and second seals before the valve device is used, enabling timely repair and replacement if sealing problems occur. During the use of the valve device, the first leak detection port can also transfer any leaks that may occur in the internal cavity due to the first-stage seal to the external processing equipment for treatment. This reduces the likelihood of leaks and effectively treats leaks in special application environments, further improving safety during the manufacturing process.

[0008] Optionally, the connector includes: a first layer of elastic tube and a second layer of elastic tube; The diameter of the first pipe of the first layer of elastic tube is smaller than the diameter of the second pipe of the second layer of elastic tube; The first layer of elastic tube is sleeved inside the second layer of elastic tube; The interior of the first layer of elastic tube is connected to the internal cavity, and the transmission component passes through the interior of the tube.

[0009] In the above implementation process, since the two ends of the connector are respectively connected to the valve body and the transmission assembly, in order to effectively seal the internal cavity of the valve body at the connector end, the connector may include a double-layer structure. Furthermore, considering the movement of the transmission assembly, the connector may include a first layer of elastic tube and a second layer of elastic tube, so that the elastic deformation of the elastic tube can adapt to different movement conditions of the transmission assembly. In the double-layer structure, the first pipe diameter of the first layer of elastic tube is smaller than the second pipe diameter of the second layer of elastic tube, so that the first layer of elastic tube can be fitted inside the second layer of elastic tube, and the inside of the first layer of elastic tube communicates with the internal cavity, accommodating the connected transmission assembly to achieve the motion transmission function. The first layer of elastic tube provides a first-level seal to the communicated internal cavity, and the second layer of elastic tube provides a second-level seal to prevent substances from leaking from the first layer of elastic tube into the internal cavity, further improving the sealing effect when the connector communicates with the internal cavity.

[0010] Optionally, the second double-layer sealing structure includes: a second leak detection port; The first end of the second leak detection port is located at the midpoint between the first welding position of the first layer of elastic tube and the second welding position of the second layer of elastic tube, and the second end of the second leak detection port is connected to external processing equipment; The second leak detection port is used to detect and transfer leaked material between the first layer of elastic tube and the second layer of elastic tube.

[0011] In the above implementation process, since the double-layer elastic tubes in the connector respectively achieve the first-level seal and the second-level seal, in order to detect the sealing effect of the welded connection of the two elastic tubes and to recover any substances that may leak from the first layer elastic tube, the second double-layer sealing structure may include a second leak detection port. The first end of the second leak detection port is located in the middle between the first welding position of the first layer elastic tube and the second welding position of the second layer elastic tube, that is, between the two layers of elastic tubes. The second end is connected to an external processing device so that the effect of the two-level seal of the two layers of elastic tubes can be detected through the second leak detection port before the valve device is used, so that timely repair and replacement can be carried out when the sealing effect is not good. Furthermore, during the use of the valve device, the second leak detection port can also transfer any leaked substances that may exist in the annular area between the double-layer elastic tubes to the external processing device for treatment. This not only reduces the possibility of leakage, but also effectively treats leaked substances in special application environments, further improving the safety of the manufacturing process.

[0012] Optionally, the valve core structure includes: a drive body, a sealing plate, a first limiting member, and a second limiting member; The sealing plate is connected to the driving body via a push rod, and the driving body is connected to the transmission assembly. The driving body is used to drive the sealing plate to move in a first direction parallel to the valve port plane, and the push rod is used to drive the sealing plate to move in a second direction perpendicular to the valve port plane. In the second direction, the first limiting member is disposed on the side of the sealing plate away from the valve port by a fixing member; the first limiting member is used to restrict the sealing plate in a third direction that is parallel to the plane of the valve port and perpendicular to the first direction; In the first direction, the second limiting member is fixedly disposed at one end of the sealing plate near the valve port; the second limiting member is used to limit the position of the sealing plate in the first direction.

[0013] In the above implementation process, the valve core structure includes a sealing plate for sealing the valve port, a drive unit connected to the sealing plate via a push rod and connected to a transmission assembly to move the sealing plate, and the drive unit can move the sealing plate in a first direction. The push rod can drive the sealing plate to move in a second direction, so as to drive the sealing plate to the corresponding position through an L-shaped movement path to open or close the valve port. Since the sealing plate needs to reciprocate multiple times, in order to ensure the positional accuracy of the sealing plate when closing the valve port, the valve core structure can also be provided with a first limiting member and a second limiting member. In the second direction, the first limiting member is fixedly set on the side of the sealing plate away from the valve port by a fixing member. The first limiting member can restrict the position of the sealing plate in the third direction to reduce the shaking of the sealing plate in the third direction during movement. In the first direction, the second limiting member is fixedly set at the end of the sealing plate near the valve port. The second limiting member can restrict the position of the sealing plate in the first direction to reduce the shaking of the sealing plate in the first direction during movement. By using two limiting components to improve the accuracy of the sealing plate's position in the first direction and the third direction, the positional accuracy of the sealing plate when closing the valve port is improved, further optimizing the sealing effect of the valve device.

[0014] Optionally, the inner wall of the valve body is provided with a first matching member extending along the first direction; the first matching member is used to engage with the first limiting member to restrict the position of the sealing plate connected to the first limiting member; In the first direction, a second matching member is provided at the bottom end of the inner wall of the valve body; the second matching member is used to engage with the second limiting member to restrict the position of the sealing plate connected to the second limiting member.

[0015] In the above implementation process, a first matching member extending along a first direction is provided on the inner wall of the valve body. The first matching member can engage with the first limiting member. The combination of the first matching member and the first limiting member restricts the position of the sealing plate in a third direction. A second matching member can also be provided at the bottom end of the inner wall of the valve body. The second matching member can engage with the second limiting member. The combination of the second matching member and the second limiting member restricts the position of the sealing plate in the first direction. Two matching members that engage with the two limiting members can be provided at corresponding positions on the inner wall of the valve body to restrict the position of the sealing plate through the combination of the limiting member and the matching member, thereby improving the positional accuracy of the sealing plate when the valve port is closed.

[0016] Optionally, the valve core structure further includes: a side wheel assembly and a top wheel assembly; In the first direction, the side wheel assembly is fixedly disposed on both sides of the drive body; the axial direction of the side wheel assembly is the second direction, and the side wheel assembly is used to control the position of the drive body in the first direction; In the second direction, the top wheel assembly is fixedly disposed on the side of the drive body away from the valve port; the axial direction of the top wheel assembly is the third direction, and the top wheel assembly is used to control the position of the drive body in the first direction.

[0017] In the above implementation process, in order to enable the driving body to move smoothly in the first direction, the valve core structure can also be provided with a side wheel assembly and a top wheel assembly. In the first direction, the side wheel assembly is fixedly set on both sides of the driving body, and its axial direction is the second direction. In the second direction, the top wheel assembly is fixedly set on the side of the driving body away from the valve port, and its axial direction is the third direction. The side wheel assembly and top wheel assembly with different axial directions set on different surfaces of the driving body can slide in contact with different positions on the inner wall of the valve body, so that the driving body can achieve a smooth movement effect in the first direction in the internal cavity of the valve body without affecting the sealing effect of the sealing plate, effectively improving the movement efficiency of the valve core structure during the valve port opening and closing process.

[0018] Optionally, the valve core structure further includes: a metal sealing ring; The metal sealing ring is clamped and fixed to the side of the sealing plate near the valve port by a fixing ring; The metal sealing ring is fitted to the end face of the valve port.

[0019] In the above implementation process, to optimize the sealing effect when the sealing plate closes the valve port, the valve core structure can also include a corresponding metal sealing ring. The metal sealing ring is clamped and fixed to the side of the sealing plate near the valve port by a fixing ring, and the metal sealing ring is in contact with the end face of the valve port. When the sealing plate closes the valve port, the metal sealing ring is squeezed by the sealing plate and the end face of the valve port, thereby achieving the corresponding sealing effect. Furthermore, the metal sealing ring is made of a suitable metal material, which can meet the working requirements of special application environments such as radiation, high temperature, or corrosion.

[0020] Optionally, the transmission assembly includes: a drive motor, a piston, and a connecting rod; One end of the piston is disposed inside the drive motor, and the drive motor is used to drive the piston to move. The first end of the connector is fixed to the extension end of the piston. The connecting rod is disposed in the internal cavity, the piston passes through the connector and is connected to the connecting rod, and the connecting rod is connected to the valve core structure; The piston is used to drive the connecting rod to move, and the connecting rod is used to drive the valve core structure to move.

[0021] In the above implementation process, the transmission assembly may include a drive motor that provides driving force, a piston that transmits driving force, and a connecting rod that reduces the driving stroke. One end of the piston is located inside the drive motor, which drives the piston to move. The first end of the connecting member is connected and fixed to the extension end of the piston outside the drive motor. The connecting rod is located in the internal cavity of the valve body, and the extension end of the piston can pass through the connecting member and connect to the connecting rod, so that the movement of the piston drives the movement of the connecting member, thereby improving the effectiveness of the connecting member in sealing the internal cavity. The piston can also drive the connecting rod to move based on its own movement. The connecting rod can convert the movement into a corresponding linkage driving stroke and drive the connected valve core structure to move accordingly, thereby realizing the control and drive of the valve core structure.

[0022] Secondly, embodiments of this application also provide an industrial device, which includes the valve device described in any one of the first aspects above.

[0023] In summary, the embodiments of this application provide a valve device and industrial equipment. The valve device is made of all-metal materials and multiple double-layer sealing structures are set to seal the internal cavity of the valve body, which effectively improves the stability of the valve device in application environments with radiation, high temperature or corrosion. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a valve device provided in an embodiment of this application; Figure 2 This is a partial structural diagram of a valve device provided in an embodiment of this application; Figure 3 This is a partial structural diagram of another valve device provided in an embodiment of this application; Figure 4 This is a schematic diagram of a valve core structure provided in an embodiment of this application; Figure 5 This is a schematic diagram of another valve core structure provided in an embodiment of this application; Figure 6 This is a schematic diagram of another valve device provided in an embodiment of this application.

[0026] Icons: 100-Valve body; 200-Valve core structure; 300-Transmission assembly; 400-Connector; 110-Valve port; 510-First double-layer sealing structure; 520-Second double-layer sealing structure; 511-First seal; 512-Second seal; 513-First leak detection port; 410-First elastic tube; 420-Second elastic tube; 521-Second leak detection port; 210-Driver; 220-Sealing plate; 221-Top rod; 230-First limiting component; 231-Fixing component; 240-Second limiting component; 251-Side wheel assembly; 252-Top wheel assembly; 253-Guide wheel; 254-Adjusting component; 260-Metal sealing ring; 310-Driver; 320-Piston component; 330-Connecting rod component; A1-Internal cavity; F1-First direction; F2-Second direction; F3-Third direction. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0028] In existing gate valve structures with sealing treatment, the valve body and internal components are made of metal, but some sealing materials are made of rubber or polytetrafluoroethylene. These materials may fail in special environments with radiation, high temperature or corrosion. For example, rubber materials may harden in a radiation environment, making it impossible to seal, which will have an adverse effect on the production process and fail to meet the sealing requirements of special application environments.

[0029] To address the aforementioned issues, this application provides a valve device and industrial equipment. The valve device is made of all-metal materials and features multiple double-layer sealing structures to seal the internal cavity of the valve body, effectively improving the stability of the valve device in radiation, high-temperature, or corrosive application environments.

[0030] Optionally, the valve device provided in this application embodiment can be installed in various types of industrial equipment, such as vacuum equipment in nuclear industry scenarios.

[0031] Please see Figure 1 , Figure 1 This is a schematic diagram of a valve device provided in an embodiment of the present application. The valve device includes a valve body 100, a valve core structure 200, a transmission assembly 300, and a connecting member 400.

[0032] The valve core structure 200 is disposed within the internal cavity A1 of the valve body 100. The valve body 100 has a valve port 110. A first end of a connecting member 400 is connected to a transmission assembly 300, and a second end of the connecting member 400 is connected to the valve body 100. The transmission assembly 300 passes through the connecting member 400 and connects to the valve core structure 200. The transmission assembly 300 drives the valve core structure 200 to move away from / near the valve port 110, thereby closing / opening the valve port 110. The transmission assembly 300 drives the valve core structure 200 to move within the internal cavity A1 of the valve body 100, thereby closing or opening the valve port 110 on the valve body 100 based on the position of the valve core structure 200.

[0033] It should be noted that the valve body 100, valve core structure 200, transmission assembly 300, and connecting member 400 are all made of metal. A first double-layer sealing structure 510 is provided at the sealing position of the valve body 100, and a second double-layer sealing structure 520 is provided at the sealing position of the connecting member 400. Since the valve body 100, valve core structure 200, transmission assembly 300, and connecting member 400 in the valve device are all made of metal, and considering the connection between the internal cavity A1 of the valve body 100 and the connecting member 400, two corresponding double-layer sealing structures can be provided at the two sealing positions of the valve body 100 and the connecting member 400 to seal the internal cavity A1 of the valve body 100, thereby reducing the adverse situation of the substance controlled by the valve device leaking from the inside of the valve body 100 to the outside. Correspondingly, the two double-layer sealing structures provided on the valve body 100 and the connector 400 are also made of all-metal materials. The valve device made of all-metal materials can adapt to working in special application environments such as radiation, high temperature or corrosion, reduce the adverse situation of failure in special application environments, improve the stability of valve device working in special application environments, meet the sealing requirements in special application environments, and improve the safety in the production and manufacturing process.

[0034] Optionally, the first double-layer sealing structure 510 may include multiple sealing elements to achieve a double-layer sealing effect, and the second double-layer sealing structure 520 may include a multi-layer welded structure to achieve a double-layer sealing effect.

[0035] For example, the valve body 100, valve core structure 200, transmission assembly 300 and connecting part 400 can be made of various types of radiation-resistant, corrosion-resistant and high-temperature-resistant metal materials such as stainless steel.

[0036] Optionally, please refer to Figure 2 , Figure 2 This is a partial structural diagram of a valve device provided in an embodiment of the present application, wherein the first double-layer sealing structure 510 may include: a first sealing element 511, a second sealing element 512 and a first leak detection port 513.

[0037] It should be noted that the first sealing element 511 is pressed and fixed on the valve body 100 at a first position near the internal cavity A1, and the first sealing element 511 is used to provide a first-level seal for the internal cavity A1. At the sealing position of the valve body 100, the first sealing element 511 is pressed and fixed on the valve body 100 at the first position near the internal cavity A1 through multiple assembled parts on the valve body 100, so as to provide a first-level seal for the internal cavity A1. The second sealing element 512 is pressed and fixed on the valve body 100 at a second position away from the internal cavity A1, and the second sealing element 512 is used to provide a second-level seal for the internal cavity A1. Considering the possibility of leakage from the first-level seal, at the sealing position of the valve body 100, the second sealing element 512 can also be pressed and fixed on the valve body 100 at the second position away from the internal cavity A1 through multiple assembled parts on the valve body 100, so as to provide a second-level seal for substances that may leak from the first-level seal in the internal cavity A1.

[0038] Optionally, the first seal 511 and the second seal 512 are metal seals to meet the working requirements of special application environments such as radiation, high temperature or corrosion.

[0039] For example, since the first seal 511 and the second seal 512 are located at the sealing position of the valve body 100, the sealing position of the valve body 100 can be set at multiple different positions based on actual conditions, such as at the connection position between the base plate and the side plate. Furthermore, since the sealing position of the valve body 100 does not have motion characteristics, the first seal 511 and the second seal 512 can be static sealing rings or static sealing rings made of stainless steel to provide a static seal for the valve body 100.

[0040] It should be noted that, in order to test the sealing effect of the two seals and to recover any substances that may leak from the first-stage seal, the first end of the first leak detection port 513 is located at a third position between the first and second positions, and the second end of the first leak detection port 513 is connected to external processing equipment. The first leak detection port 513 is used to detect and transfer leaked substances from the internal cavity A1. By using the first leak detection port 513, the sealing effect of the first seal 511 and the second seal 512 can be tested separately before the valve device is used, allowing for timely repair and replacement if sealing problems occur. Furthermore, during the use of the valve device, the first leak detection port 513 can also transfer any leaked substances from the internal cavity A1 that may be caused by the first-stage seal to the external processing equipment for treatment. This reduces the likelihood of leaks and effectively treats leaked substances in special application environments, further improving safety during the manufacturing process.

[0041] For example, the leaked substance may be a substance in the controlled equipment connected to the valve port 110 of the valve device, such as radiant gas, high-temperature gas, corrosive gas, or other types of liquid, solid-gas mixtures, etc.

[0042] Optionally, the first leak detection port 513 may include an L-shaped leak detection groove structure provided on the plate wall of the valve body 100, with the first end of the leak detection groove structure at the third position and the second end connected to external processing equipment. The processing equipment may include a corresponding air pump or other equipment capable of extracting gaseous substances.

[0043] Optionally, before using the valve device, only the first seal 511 can be installed, and the internal cavity A1 of the valve body 100 can be vented. A gas extraction test is then performed using a processing device. If the processing device detects a gas leak, the sealing effect of the first seal 511 is considered poor, requiring repositioning or replacement until the processing device can no longer detect a gas leak. Alternatively, only the second seal 512 can be installed, and the first leak detection port 513 can be vented by the processing device to test the sealing effect of the second seal 512. If a gas leak is detected at the second seal 512, the sealing effect of the second seal 512 is considered poor, requiring repositioning or replacement until no gas leak is detected at the second seal 512.

[0044] Optionally, during the use of the valve device, the processing equipment can maintain an evacuation state. Even if the sealing effect of the first seal 511 is affected, resulting in leakage, the processing equipment can extract the leaking material from the first leak detection port 513 and continue the second-stage sealing through the second seal 512, thereby improving the sealing effectiveness of the valve body 100. Furthermore, the processing equipment can also transfer the extracted leaking material to appropriate equipment for recycling, such as cooling or neutralization, to reduce the adverse effects of radioactive, high-temperature, or corrosive leaking materials, thereby improving safety during the manufacturing process.

[0045] Optionally, please refer to Figure 3 , Figure 3 This is a partial structural diagram of another valve device provided in an embodiment of this application. Since the two ends of the connector 400 are respectively connected to the valve body 100 and the transmission assembly 300, in order to effectively seal the internal cavity A1 of the valve body 100 at the connector 400 end, the connector 400 may include a double-layer structure. Furthermore, considering the movement of the transmission assembly 300, the connector 400 may include a first layer of elastic tube 410 and a second layer of elastic tube 420, so as to adapt to different movement of the transmission assembly 300 through the elastic deformation of the elastic tube.

[0046] It should be noted that the first pipe diameter of the first layer of elastic tube 410 is smaller than the second pipe diameter of the second layer of elastic tube 420. The first layer of elastic tube 410 is fitted inside the second layer of elastic tube 420, and the inside of the pipe of the first layer of elastic tube 410 is connected to the internal cavity A1, allowing the transmission component 300 to pass through. In the double-layer structure, the first pipe diameter of the first layer of elastic tube 410 is smaller than the second pipe diameter of the second layer of elastic tube 420, so that the first layer of elastic tube 410 can be fitted inside the second layer of elastic tube 420, and the inside of the pipe of the first layer of elastic tube 410 is connected to the internal cavity A1, allowing the connected transmission component 300 to pass through, thereby realizing the motion transmission function. The first layer of elastic tube 410 provides a first-level seal for the connected internal cavity A1, and the second layer of elastic tube 420 provides a second-level seal for substances that may leak from the first layer of elastic tube 410 into the internal cavity A1, further improving the sealing effect when the connector 400 is connected to the internal cavity A1.

[0047] Optionally, the first end of the first layer of elastic tube 410 and the second layer of elastic tube 420 are welded and fixed to the transmission assembly 300, and the second end is welded and fixed to the interface of the valve body 100. The interface of the valve body 100 corresponds to the shape of the first layer of elastic tube 410, so that the inside of the pipe of the first layer of elastic tube 410 is connected to the internal cavity A1 of the valve body 100, and the corresponding dynamic sealing function is realized.

[0048] For example, a flexible tube may include a structure such as a bellows made of metallic material.

[0049] Please continue reading. Figure 3 Since the double-layer elastic tubes in the connector 400 achieve the first-level seal and the second-level seal respectively, in order to test the sealing effect of the welded connection of the two elastic tubes and to recycle any substances that may leak from the first-layer elastic tube 410, the second double-layer sealing structure 520 may include: a second leak detection port 521.

[0050] The second leak detection port 521 has its first end positioned midway between the first welding position of the first elastic tube 410 and the second welding position of the second elastic tube 420. The second end of the second leak detection port 521 is connected to external processing equipment. The second leak detection port 521 is used to detect and transfer leaked material between the first and second elastic tubes 410 and 420. The second leak detection port 521 allows for the testing of the two-stage sealing effect of the two elastic tubes before the valve device is used, enabling timely repair and replacement if sealing problems occur. Furthermore, during the use of the valve device, the second leak detection port 521 can also transfer any leaked material that may exist in the annular area between the two elastic tubes to the external processing equipment for treatment. This reduces the likelihood of leaks and effectively treats leaked material in special application environments, further improving safety during the manufacturing process.

[0051] Optionally, before using the valve device, if only the first layer of elastic tube 410 is welded and fixed, the internal cavity A1 of the valve body 100 can be vented. Since the inside of the first layer of elastic tube 410 is connected to the internal cavity A1, the venting equipment can be used for air extraction detection. If the equipment detects a gas leak, the sealing effect of the first layer of elastic tube 410 is considered poor, and it needs to be re-welded or the part directly replaced until the equipment can no longer detect a gas leak. If the second layer of elastic tube 420 is welded and fixed, the equipment vents the second leak detection port 521 to test the sealing effect of the second layer of elastic tube 420. If a gas leak is detected at the second layer of elastic tube 420, the sealing effect of the second layer of elastic tube 420 is considered poor, and it needs to be re-welded or the part directly replaced until no gas leak is detected at the second layer of elastic tube 420.

[0052] Optionally, during the use of the valve device, the processing equipment can maintain an evacuation state. Even if the sealing effect of the first layer of elastic tube 410 is affected, resulting in leakage, the processing equipment can extract the leaking material in the annular area between the two layers of elastic tubes based on the second leak detection port 521, and continue the second-stage sealing through the second layer of elastic tube 420, thereby improving the sealing effectiveness of the valve body 100. Furthermore, the processing equipment can also transfer the extracted leaking material to appropriate equipment for recycling, such as cooling and neutralization, to reduce the adverse effects caused by radioactive, high-temperature, or corrosive leaking materials, thereby improving safety during the manufacturing process.

[0053] Optionally, the second leak detection port 521 may include an L-shaped leak detection groove structure provided on the plate wall of the interface of the valve body 100, with the first end of the leak detection groove structure in the middle position and the second end connected to external processing equipment.

[0054] Optionally, by combining the first leak detection port 513 and the second leak detection port 521, the sealing effect of the internal cavity A1 of the valve body 100 and the pipe connected to the internal cavity A1 can be detected simultaneously, and the leaked material can be effectively extracted, further reducing the adverse situation of material leaking from the valve port 110 to the outside of the valve device.

[0055] Optionally, please refer to Figure 4 , Figure 4 This is a schematic diagram of a valve core structure provided in an embodiment of the present application. The valve core structure 200 may include: a drive body 210, a sealing plate 220, a first limiting member 230, and a second limiting member 240.

[0056] Optionally, the sealing plate 220 can be configured as a valve plate of corresponding size and shape according to the actual shape and size of the valve port 110, for example, it can be configured as a circular valve plate with a diameter of 50mm. The driving body 210 can be configured as a frame structure that can realize the transmission of driving force and facilitate the installation of the device, according to the size of the sealing plate 220.

[0057] The sealing plate 220 is connected to the driving body 210 via a push rod 221. The driving body 210 is connected to the transmission assembly 300. The driving body 210 drives the sealing plate 220 to move in a first direction F1 parallel to the plane of the valve port 110, and the push rod 221 drives the sealing plate 220 to move in a second direction F2 perpendicular to the plane of the valve port 110. The valve core structure 200 includes a sealing plate 220 for sealing the valve port 110, a driving body 210 connected to the sealing plate 220 via a push rod 221 and connected to the transmission assembly 300 to drive the sealing plate 220 to move. The driving body 210 can drive the sealing plate 220 to move in the first direction F1, and the push rod 221 can drive the sealing plate 220 to move in the second direction F2, so as to drive the sealing plate 220 to the corresponding position through an L-shaped movement path to open or close the valve port 110.

[0058] For example, the two ends of the push rod 221 can be provided with through-hole structures, so that the two ends of the push rod 221 can be fixed to the sealing plate 220 and the driving body 210 respectively by means of push rod 221 pins and other devices, thereby connecting the sealing plate 220 and the driving body 210. Multiple push rods 221 can also be provided, and the multiple push rods 221 can be evenly distributed to improve the effectiveness and force uniformity of the movement of the sealing plate 220 in the second direction F2.

[0059] It should be noted that, since the sealing plate 220 needs to reciprocate multiple times, to ensure the positional accuracy of the sealing plate 220 when closing the valve port 110, the valve core structure 200 can also be equipped with a first limiting member 230 and a second limiting member 240. In the second direction F2, the first limiting member 230 is disposed on the side of the sealing plate 220 away from the valve port 110 via a fixing member 231; the first limiting member 230 is used to restrict the position of the sealing plate 220 in a third direction F3, parallel to the plane of the valve port 110 and perpendicular to the first direction F1. In the first direction F1, the second limiting member 240 is fixedly disposed at the end of the sealing plate 220 near the valve port 110; the second limiting member 240 is used to restrict the position of the sealing plate 220 in the first direction F1. The first limiting member 230 can restrict the position of the sealing plate 220 in the third direction F3 to reduce the shaking of the sealing plate 220 in the third direction F3 during its movement. The second limiting member 240 can restrict the position of the sealing plate 220 in the first direction F1 to reduce the shaking of the sealing plate 220 in the first direction F1 during its movement. By improving the positional accuracy of the sealing plate 220 in the first direction F1 and the third direction F3 through the two limiting members, the positional accuracy of the sealing plate 220 when closing the valve port 110 is improved, and the sealing effect of the valve device is further optimized.

[0060] For example, the first limiting member 230 can be configured as a corresponding I-beam frame plate structure, and the second limiting member 240 can be configured as a corresponding limiting wheel structure. Both the first limiting member 230 and the second limiting member 240 can be fixed to the sealing plate 220 by fixing members 231 such as positioning pins, so as to reduce the shaking between the first limiting member 230 and the second limiting member 240 and the sealing plate 220, and improve the positional consistency between the first limiting member 230, the second limiting member 240 and the sealing plate 220.

[0061] It should be noted that, due to the motion characteristics of the driving body 210, there is a relative displacement between the driving body 210 and the sealing plate 220. Therefore, the first limiting member 230 and the second limiting member 240 are fixed on the sealing plate 220, rather than on the driving body 210, so as to effectively limit the actual position of the sealing plate 220 during the process of the driving body 210 driving the sealing plate 220 to move.

[0062] Optionally, the inner wall of the valve body 100 is provided with a first mating member extending along a first direction F1; the first mating member is used to engage with the first limiting member 230 to restrict the position of the sealing plate 220 connected to the first limiting member 230. In the first direction F1, the bottom end of the inner wall of the valve body 100 is provided with a second mating member; the second mating member is used to engage with the second limiting member 240 to restrict the position of the sealing plate 220 connected to the second limiting member 240. The first mating member extending along the first direction F1 is provided on the inner wall of the valve body 100, and the first mating member can engage with the first limiting member 230. Through the combination of the first mating member and the first limiting member 230, the position of the sealing plate 220 in the third direction F3 is restricted. A second mating member may also be provided at the bottom end of the inner wall of the valve body 100, and the second mating member can engage with the second limiting member 240. Through the combination of the second mating member and the second limiting member 240, the position of the sealing plate 220 in the first direction F1 is restricted. Two matching parts that fit with the two limiting parts can be set at corresponding positions on the inner wall of the valve body 100, so as to restrict the position of the sealing plate 220 by the combination of the limiting parts and the matching parts, thereby improving the positional accuracy of the sealing plate 220 when the valve port 110 is closed.

[0063] Optionally, in the first direction F1, the two ends of the first limiting member 230 can be provided with corresponding sliders, and the first matching member can be set as two linear guide rails parallel to the first direction F1. The inner wall of the guide rail fits with the outer wall of the slider. During the movement of the sealing plate 220, the slider runs on the linear guide rail. The combination of the first limiting member 230 and the first matching member restricts the position of the sealing plate 220 in the third direction F3, so that the relative position of the sealing plate 220 and the valve body 100 in the third direction F3 remains unchanged during the movement.

[0064] Optionally, the second matching component can be configured as a corresponding limiting block structure. When the sealing plate 220 moves to the corresponding position of the valve port 110 in the first direction F1, the limiting wheel in the second limiting component 240 contacts the limiting block to restrict the position of the sealing plate 220 in the first direction F1, so that the relative position of the sealing plate 220 and the valve body 100 in the first direction F1 remains unchanged when the sealing plate 220 reaches the corresponding position.

[0065] It should be noted that when the valve port 110 is closed, the sealing plate 220 is positioned and advanced in the first direction F1 and the third direction F3, which ensures the repeatability of the sealing surface and thus ensures the sealing reliability of the valve device.

[0066] Alternatively, please continue reading Figure 4 In order to enable the drive body 210 to move smoothly in the first direction F1, the valve core structure 200 may also include: a side wheel assembly 251 and a top wheel assembly 252.

[0067] In the first direction F1, side wheel assemblies 251 are fixedly disposed on both sides of the drive body 210; the axial direction of the side wheel assemblies 251 is the second direction F2, and the side wheel assemblies 251 are used to control the position of the drive body 210 in the first direction F1. In the second direction F2, top wheel assemblies 252 are fixedly disposed on the side of the drive body 210 away from the valve port 110; the axial direction of the top wheel assemblies 252 is the third direction F3, and the top wheel assemblies 252 are used to control the position of the drive body 210 in the first direction F1. The side wheel assemblies 251 and top wheel assemblies 252, which are disposed on different surfaces of the drive body 210 and have different axial directions, can slide in contact with different positions on the inner wall of the valve body 100, thereby enabling the drive body 210 to achieve a smooth movement effect in the first direction F1 within the internal cavity A1 of the valve body 100 without affecting the sealing effect of the sealing plate 220, effectively improving the movement efficiency of the valve core structure 200 during the opening and closing of the valve port 110.

[0068] Optionally, the drive body 210 may be provided with multiple mounting seats to install the corresponding side wheel assembly 251 and top wheel assembly 252 respectively.

[0069] Optionally, a corresponding guide wheel 253 may be provided on the drive body 210, and a corresponding groove may be provided on the inner wall of the valve body 100, so as to limit the position of the drive body 210 by the combination of the guide wheel 253 and the groove.

[0070] Optionally, please refer to Figure 5 , Figure 5 This is a schematic diagram of another valve core structure provided in an embodiment of this application. In order to optimize the sealing effect when the sealing plate 220 closes the valve port 110, the valve core structure 200 may also include a metal sealing ring 260.

[0071] The metal sealing ring 260 is fixed to the side of the sealing plate 220 near the valve port 110 by a retaining ring, and the metal sealing ring 260 is in contact with the end face of the valve port 110. When the sealing plate 220 closes the valve port 110, the metal sealing ring 260 is compressed by the sealing plate 220 and the end face of the valve port 110, thereby achieving the corresponding sealing effect. Furthermore, the metal sealing ring 260 is made of a suitable metal material, which can meet the working requirements of special application environments such as radiation, high temperature, or corrosion.

[0072] Optionally, the metal sealing ring 260 can be a corresponding C-shaped metal ring, which has a corresponding long ear and an annular portion. The fixing ring can be based on multiple screws or other devices to clamp and fix the long ear of the C-shaped metal ring on the sealing plate 220, so that the annular portion fits against the end face of the valve port 110 to form a sealing surface and achieve the corresponding sealing effect.

[0073] Optionally, when using a metal sealing ring 260 for sealing, the metal sealing ring 260 contacts the end face of the valve port 110 during each sealing process, forming a sealing line. If the repeatability of the sealing plate 220 is not high, a non-repeating sealing line will form on the end face of the valve body 100 after each sealing, with the sealing lines intersecting and irregular, resulting in sealing failure. In this application, the combination of the first limiting member 230, the second limiting member 240, the first matching member, and the second matching member effectively improves the repeatability of the sealing plate 220, thereby improving the effectiveness of the seal. During the opening and closing of valve port 110, sealing plate 220 moves along the first direction F1 together with the first limiting member 230. When the valve is closed and opened, under the restriction of the first limiting member 230 and the second limiting member 240, the position of sealing plate 220 in the first direction F1 and the third direction F3 remains unchanged, and it only moves closer to and away from valve port 110 in the second direction F2. This ensures that the sealing position of sealing plate 220 and valve port 110 remains unchanged each time it is sealed, and the positioning accuracy of the sealing line between sealing plate 220 and valve port 110 is guaranteed, so that the valve can be effectively sealed during repeated opening and closing.

[0074] Alternatively, please continue reading Figure 4 A corresponding adjustment component 254 can also be provided between the driving body 210 and the sealing plate 220. The adjustment component 254 may include devices such as set screws, which can adjust the distance between the sealing plate 220 and the driving body 210, thereby adjusting the compression of the metal sealing ring 260 on the sealing plate 220.

[0075] Optionally, please refer to Figure 6 , Figure 6This is a schematic diagram of another valve device provided in an embodiment of this application. The transmission assembly 300 may include a drive unit 310, a piston 320, and a connecting rod 330. One end of the piston 320 is disposed within the drive unit 310, which drives the piston 320 to move. The first end of the connecting member 400 is fixedly connected to the extension end of the piston 320. The connecting rod 330 is disposed within the internal cavity A1. The piston 320 passes through the connecting member 400 and is connected to the connecting rod 330. The connecting rod 330 is connected to the valve core structure 200. The piston 320 drives the connecting rod 330 to move, and the connecting rod 330 drives the valve core structure 200 to move. One end of the piston 320 is disposed within the drive motor 310, which drives the piston 320 to move. The first end of the connecting member 400 is fixedly connected to the extension end of the piston 320 outside the drive motor 310. The connecting rod 330 is disposed within the internal cavity A1 of the valve body 100. The extension end of the piston 320 can pass through the connecting member 400 and connect to the connecting rod 330, so that the movement of the piston 320 drives the connecting member 400 to move, thereby improving the effectiveness of the connecting member 400 in sealing the internal cavity A1. The piston 320 can also drive the connecting rod 330 to move based on its own movement. The connecting rod 330 can convert the movement into a corresponding linkage drive stroke and drive the connected valve core structure 200 to move accordingly, thereby realizing the control drive of the valve core structure 200.

[0076] It should be noted that the linkage 330 may include a mechanism composed of multiple linkages, which can effectively reduce the drive stroke of the drive motor 310, thereby reducing the length of the required connecting member 400.

[0077] For example, the drive unit 310 may include devices with driving functions such as cylinders and motors.

[0078] For example, when the valve port 110 is closed, the drive motor 310 can push the piston 320, which in turn drives the valve core structure 200 to move towards the valve port 110 in the first direction F1 via the connecting rod 330. The side wheel assembly 251, top wheel assembly 252, and first limiting member 230 mounted on the drive body 210 are supported by the side plate, panel, and first matching member of the valve body 100, respectively, driving the sealing plate 220 to move smoothly within the valve body 100. The second limiting member 240 stops after contacting the second matching member. Stop the movement, drive motor 310 drives piston 320 to continue moving towards valve port 110 in the second direction F2. Push rod 221 installed between drive body 210 and sealing plate 220 gradually changes from inclined to vertical. During this process, under the push of push rod 221, sealing plate 220 gradually moves towards valve port 110 in the second direction F2. Metal sealing ring 260 installed on sealing plate 220 is compressed, thereby achieving sealing. At this time, guide wheel 253 falls into the corresponding groove on valve body 100.

[0079] For example, when the valve port 110 is open, the drive motor 310 pulls the piston 320, which drives the valve core structure 200 away from the valve port in the second direction F2 via the connecting rod 330. The push rod 221 installed between the drive body 210 and the sealing plate 220 gradually changes from vertical to inclined. During this process, the guide wheel 253 is pulled out of the groove of the valve body 100. The drive motor 310 continues to drive the piston 320 to move, pulling the entire valve core structure 200 away from the valve port in the first direction F1 until the valve port 110 is fully open.

[0080] In addition, the components in the various embodiments of this application can be integrated together to form an independent part, or each component can exist independently, or two or more components can be integrated to form an independent part.

[0081] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0082] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

[0083] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes said element.

Claims

1. A valve device, characterized in that, The valve device includes a valve body, a valve core structure, a transmission assembly, and connecting parts; The valve core structure is disposed in the internal cavity of the valve body, and the valve body is provided with a valve port; The first end of the connector is connected to the transmission assembly, the second end of the connector is connected to the valve body, the transmission assembly passes through the connector and is connected to the valve core structure, the transmission assembly is used to drive the valve core structure to move away from / near the valve port, and the valve core structure is used to close / open the valve port; The valve body is provided with a first double-layer sealing structure at the sealing position; A second double-layer sealing structure is provided at the sealing position of the connector; The valve body, the valve core structure, the transmission assembly, and the connecting parts are all made of metal materials.

2. The valve device according to claim 1, characterized in that, The first double-layer sealing structure includes: a first sealing element, a second sealing element, and a first leak detection port; The first sealing element is pressed and fixed on the valve body at a first position near the internal cavity, and the first sealing element is used to provide a first-level seal for the internal cavity; The second seal is pressed and fixed on the valve body at a second position away from the internal cavity, and the second seal is used to provide a second-level seal for the internal cavity; The first end of the first leak detection port is located at a third position between the first position and the second position, and the second end of the first leak detection port is connected to an external processing device; The first leak detection port is used to detect and transmit leaked material from the internal cavity; The first seal and the second seal are metal seals.

3. The valve device according to claim 1, characterized in that, The connector includes: a first layer of elastic tube and a second layer of elastic tube; The diameter of the first pipe of the first layer of elastic tube is smaller than the diameter of the second pipe of the second layer of elastic tube; The first layer of elastic tube is sleeved inside the second layer of elastic tube; The interior of the first layer of elastic tube is connected to the internal cavity, and the transmission component passes through the interior of the tube.

4. The valve device according to claim 3, characterized in that, The second double-layer sealing structure includes: a second leak detection port; The first end of the second leak detection port is located at the midpoint between the first welding position of the first layer of elastic tube and the second welding position of the second layer of elastic tube, and the second end of the second leak detection port is connected to external processing equipment; The second leak detection port is used to detect and transfer leaked material between the first layer of elastic tube and the second layer of elastic tube.

5. The valve device according to any one of claims 1-4, characterized in that, The valve core structure includes: a drive body, a sealing plate, a first limiting member, and a second limiting member; The sealing plate is connected to the driving body via a push rod, and the driving body is connected to the transmission assembly. The driving body is used to drive the sealing plate to move in a first direction parallel to the valve port plane, and the push rod is used to drive the sealing plate to move in a second direction perpendicular to the valve port plane. In the second direction, the first limiting member is disposed on the side of the sealing plate away from the valve port by a fixing member; the first limiting member is used to restrict the sealing plate in a third direction that is parallel to the plane of the valve port and perpendicular to the first direction; In the first direction, the second limiting member is fixedly disposed at one end of the sealing plate near the valve port; the second limiting member is used to limit the position of the sealing plate in the first direction.

6. The valve device according to claim 5, characterized in that, The inner wall of the valve body is provided with a first matching member extending along the first direction; the first matching member is used to engage with the first limiting member to restrict the position of the sealing plate connected to the first limiting member; In the first direction, a second matching member is provided at the bottom end of the inner wall of the valve body; the second matching member is used to engage with the second limiting member to restrict the position of the sealing plate connected to the second limiting member.

7. The valve device according to claim 5, characterized in that, The valve core structure also includes: a side wheel assembly and a top wheel assembly; In the first direction, the side wheel assembly is fixedly disposed on both sides of the drive body; the axial direction of the side wheel assembly is the second direction, and the side wheel assembly is used to control the position of the drive body in the first direction; In the second direction, the top wheel assembly is fixedly disposed on the side of the drive body away from the valve port; the axial direction of the top wheel assembly is the third direction, and the top wheel assembly is used to control the position of the drive body in the first direction.

8. The valve device according to claim 5, characterized in that, The valve core structure also includes: a metal sealing ring; The metal sealing ring is clamped and fixed to the side of the sealing plate near the valve port by a fixing ring; The metal sealing ring is fitted to the end face of the valve port.

9. The valve device according to any one of claims 1-4, characterized in that, The transmission assembly includes: a drive motor, a piston, and a connecting rod; One end of the piston is disposed inside the drive motor, and the drive motor is used to drive the piston to move. The first end of the connector is fixed to the extension end of the piston. The connecting rod is disposed in the internal cavity, the piston passes through the connector and is connected to the connecting rod, and the connecting rod is connected to the valve core structure; The piston is used to drive the connecting rod to move, and the connecting rod is used to drive the valve core structure to move.

10. An industrial device, characterized in that, The industrial equipment includes the valve device according to any one of claims 1-9.

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