Integral saturation standby device

Abstract

The invention relates to the technical field of integral saturation equipment, and particularly discloses an integral saturation standby device which comprises a main body, the main body comprises a valve channel and a valve plate, and a standby opening assembly is mounted on the valve plate; the standby opening assembly comprises a connecting assembly and a power assembly. When the valve plate cannot operate due to integral saturation, the connecting assembly controls the power assembly to operate, and the power assembly controls the valve plate to operate. The combined structure of the spring rod and the connecting rod has the rigid transmission function and the flexible buffering function, when main control of the valve plate fails due to integral saturation, the connecting assembly relieves limitation on the power assembly, the standby motor forcibly drives the valve plate to be opened, and a physical emergency access is formed. And material transmission interruption is avoided, and the guarantee capacity for fluid control continuity in an industrial scene is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of integral saturation device, and particularly relates to an integral saturation backup device. BACKGROUND

[0002] In an industrial control system, integral saturation is a common and serious problem. The integral saturation phenomenon usually occurs in a proportional-integral-derivative (PID) controller. When the controller output exceeds the set range due to the continuous accumulation of errors by the integral term, the system output will enter a saturated state, resulting in control failure. In a valve control scenario, if the valve plate cannot respond to the control instruction due to integral saturation, it will cause material transmission interruption, system performance degradation, and even safety accidents.

[0003] The traditional solutions include Anti-Windup technology and integral separation method, which can alleviate the integral saturation problem, but mainly rely on software algorithm adjustment and cannot completely eliminate the risk of control failure at the physical level. The integral limiting method weakens the integral term by limiting the integral term output, but sacrifices the steady-state accuracy of the system and has limited adaptability to complex working conditions. Traditional valve control devices mainly adopt a single driving mode and lack dynamic compensation mechanisms, making it difficult to respond to sudden control failure. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a device for realizing emergency control at the physical level through hardware redundancy.

[0005] The above technical problem is solved by the following technical scheme. The present application provides an integral saturation backup device, which comprises a main body, the main body comprising a valve passage and a valve plate, and a backup opening assembly mounted on the valve plate.

[0006] The backup opening assembly comprises a connecting assembly and a power assembly.

[0007] When the valve plate cannot operate due to integral saturation, the connecting assembly controls the power assembly to operate, and the power assembly controls the valve plate to operate.

[0008] In a preferred embodiment of the integral saturation backup device, one side of the valve plate is fixedly connected with a controller, one end of the controller is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a plurality of spring rods, and one end of the spring rod is fixedly connected with the valve plate.

[0009] In a preferred embodiment of the integral saturation backup device, the power assembly comprises a cylindrical cavity formed in the valve plate, one end of the cylindrical cavity penetrates through the valve plate, and the other end of the cylindrical cavity is provided with a containing cavity.

[0010] In a preferred embodiment of the integral saturation standby device, the inner wall of the accommodating cavity is fixedly connected with a fixed support rod, one end of the fixed support rod is fixedly connected with a standby motor, and the output end of the standby motor is fixedly connected with a screw rod.

[0011] In a preferred embodiment of the integral saturation standby device, the side wall of the standby motor is provided with a contact plate, the connecting rod is a hollow structure, the inner wall of the connecting rod is provided with a screw thread, and the connecting rod is screwed with the screw rod.

[0012] In a preferred embodiment of the integral saturation standby device, the connecting assembly comprises a through groove formed in one side of the valve plate, and first sliding grooves are formed in the two side walls of the through groove.

[0013] In a preferred embodiment of the integral saturation standby device, a push plate is slidably connected in the through groove, first protrusions are fixedly connected to the two sides of the push plate, the first protrusions slide in the first sliding grooves, a first limiting plate is fixedly connected to one side of the push plate, and a second limiting plate is fixedly connected to the other side of the push plate.

[0014] In a preferred embodiment of the integral saturation standby device, a moving groove is formed in one side of the through groove, second sliding grooves are formed in the two sides of the moving groove, a moving group is slidably connected in the moving groove, the moving group comprises a magnetic plate, a control piece is fixedly connected to one side of the magnetic plate, second protrusions are fixedly connected to the two sides of the magnetic plate, and the second protrusions slide in the second sliding grooves.

[0015] In a preferred embodiment of the integral saturation standby device, the second limiting plates are located on the two sides of the magnetic plate.

[0016] In a preferred embodiment of the integral saturation standby device, a limiting block is fixedly connected in the valve passage, and the limiting block is located between the first limiting plates.

[0017] The beneficial effects of the present application are that: the present application constructs double protection of the main control system and the standby driving system through the linkage design of the connecting assembly and the power assembly, the combined structure of the spring rod and the connecting rod has rigid transmission and flexible buffering functions, the power assembly adopts a screw- connecting rod threaded pair structure to convert the rotary motion of the standby motor into the axial displacement of the valve plate, the synergistic mechanism of the magnetic plate-control sheet-contact plate in the connecting assembly realizes the intelligent start of the standby motor through electromagnetic induction, when the valve plate causes the main control to fail due to integral saturation, the connecting assembly automatically releases the restriction on the power assembly, so that the standby motor forcibly drives the valve plate to open, forming a physical emergency passage, this mechanical-electrical synergistic fault-tolerant mechanism not only avoids the interruption of material transmission, but also significantly improves the guarantee ability of fluid control continuity in industrial scenes. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, but not limit the present application. Among them:

[0019] Figure 1 The overall structure schematic diagram of the integral saturation standby device is shown;

[0020] Figure 2 The overall structure side view of the integral saturation standby device is shown;

[0021] Figure 3 The valve plate and the controller of the integral saturation standby device are shown;

[0022] Figure 4 The explosion schematic diagram of the valve plate and the controller of the integral saturation standby device is shown;

[0023] Figure 5 The cross-sectional view of the valve plate of the integral saturation standby device is shown Figure 1 ;

[0024] Figure 6 The cross-sectional view of the valve plate of the integral saturation standby device is shown Figure 2 ;

[0025] Figure 7 The connecting assembly partial explosion schematic diagram of the integral saturation standby device is shown;

[0026] Figure 8 The power assembly cross-sectional view of the integral saturation standby device is shown;

[0027] In the drawings:

[0028] 1, main body; 2, spare opening assembly; 11, valve passage; 12, valve plate; 21, connecting assembly; 22, power assembly; 121, controller; 122, connecting rod; 123, spring rod; 221, cylindrical cavity; 222, containing cavity; 223, fixed support rod; 224, spare motor; 225, screw rod; 226, contact plate; 211, through slot; 212, first sliding groove; 213, push plate; 214, first protrusion; 215, first limiting plate; 216, second limiting plate; 217, moving groove; 218, second sliding groove; 219, moving group; 2191, magnetic plate; 2192, control piece; 2193, second protrusion; 111, limiting block. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with specific embodiments and drawings.

[0030] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions related to the present application, but these terms can be changed according to the intention of those skilled in the art, precedents, or new technology in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meaning of the terms and the overall description of the present application.

[0031] REFERENCE Figures 1 to 8 The present embodiment provides a kind of integral saturation spare device, including main body 1, main body 1 includes valve passage 11 and valve plate 12, and spare opening assembly 2 is installed on valve plate 12;Spare opening assembly 2 includes connecting assembly 21 and power assembly 22;When valve plate 12 cannot operate due to integral saturation, connecting assembly 21 controls power assembly 22 to operate, and power assembly 22 controls valve plate 12 to operate.

[0032] The standby opening assembly 2 is a fault-tolerant standby of the main control part, and is composed of a connecting assembly 21 and a power assembly 22 for providing driving force. The connecting assembly 21 is installed on the valve plate 12, and the power assembly 22 is used to open the valve plate 12 when the valve plate 12 cannot be opened due to integral saturation. When the valve plate 12 is in normal operation, the connecting assembly 21 hinders the operation of the power assembly 22. When the valve plate 12 responds to a problem, the connecting assembly 21 cannot hinder the operation of the power assembly 22, so that the valve plate 12 is controlled to be opened by the power assembly 22. When the valve plate 12 is in a controllable state, the connecting assembly 21 effectively inhibits the operation of the power assembly 22 through a mechanical mechanism, ensuring accurate control of the valve plate 12 by the main control part. In the abnormal working condition of integral saturation leading to control failure, the connecting assembly 21 cannot hinder the operation of the power assembly 22, and at this time the power assembly 22 forcibly opens the valve plate 12, forming an emergency passage at the physical level and ensuring the continuity of material transmission.

[0033] Further, the valve plate 12 is fixedly connected with a controller 121 on one side, the controller 121 is slidably connected with a connecting rod 122 at one end, the connecting rod 122 is fixedly connected with a plurality of spring rods 123 at one end, and the spring rods 123 are fixedly connected with the valve plate 12 at one end.

[0034] The valve channel 11 is provided with a sliding cavity for accommodating a valve plate 12 which can move in the axial direction. A controller 121 is fixedly connected to one end of the sliding cavity. After receiving the information sent by the system, the controller 121 pushes a connecting rod 122 fixed at one end of the controller 121 to move. The connecting rod 122 is fixedly connected with a spring rod 123 at one end. The spring rod 123 is fixedly connected with the valve plate 12 at one end. Therefore, when the connecting rod 122 is pushed by the controller 121, the valve plate 12 moves together with the connecting rod 122. The spring rod 123 is in the initial state of contraction, and there is no stress in the spring rod 123. When the spring rod 123 is pulled to the stretched state, the elastic force of the spring rod 123 needs to be overcome. Therefore, when the connecting rod 122 is pushed, the spring rod 123 is regarded as a connecting rod to push the movement of the valve plate 12. When the controller 121 controls the valve to open, the controller 121 pulls the connecting rod 122 to move. The connecting rod 122 pulls the spring rod 123. At this time, the spring rod 123 is pulled open, and the elastic potential energy is generated in the spring rod 123. The one end of the spring rod 123 is pulled by the connecting rod 122, and the other end pulls the valve plate 12 to move due to the elastic potential energy. The state of the spring rod 123 is stretched, and the valve plate 12 is not affected by whether the spring rod 123 is stretched to the limit or not. When the spring rod 123 is stretched to the limit, the pulling force of the spring rod 123 pulls the valve plate 12, and also serves as a connecting rod to pull the valve plate 12. Whether the spring rod 123 is pulled to any state or not, the opening of the valve plate 12 is not affected. When the controller 121 stops moving the connecting rod 122, the spring rod 123 has an elastic force inside. The one end of the spring rod 123 is fixed on the connecting rod 122 which stops moving. Therefore, the other end of the spring rod 123 pulls the valve plate 12 to the preset position. At this time, the spring rod 123 releases the elastic potential energy, and finally returns to the initial state.

[0035] Further, the power assembly 22 includes a cylindrical cavity 221 provided in the valve plate 12. One end of the cylindrical cavity 221 penetrates the valve plate 12. The other end of the cylindrical cavity 221 is provided with an accommodating cavity 222. The inner wall of the accommodating cavity 222 is fixedly connected with a fixed support rod 223. One end of the fixed support rod 223 is fixedly connected with a backup motor 224. One end of the backup motor 224 is provided with a motor rod. One end of the motor rod is fixedly connected with a screw rod 225.

[0036] Wherein, the through type cylinder cavity 221 is arranged inside the valve plate 12, the axis is strictly coaxial with the center line of the connecting rod 122, and the diameter of the cylinder cavity 221 is smaller than the diameter of the connecting rod 122, the spring rod 123 at the end of the connecting rod 122 is distributed around one end of the cylinder cavity 221, which ensures that the spring rod 123 is constrained in the radial direction while the driving force can be transmitted in the axial direction, the end of the cylinder cavity 221 is provided with a containing cavity 222, a standby motor 224 is installed through a fixed support rod 223, the motor output end is connected with a fixed motor rod, the end of the motor rod is fixedly connected with a screw rod 225, which ensures that the screw rod 225 can rotate freely but is prohibited from axial displacement, and at the same time, the rotary torque is transmitted to the valve plate 12 main body 1 through the fixed support rod 223, since only rotary motion is allowed between the screw rod 225 and the valve plate 12, when the standby motor 224 is started, the screw rod 225 is rotated by rotating the motor rod.

[0037] Further, the contact plate 226 is installed on the side wall of the standby motor 224, the connecting rod 122 is a hollow structure, the inner wall of the connecting rod 122 is provided with a screw thread, and the connecting rod 122 is screwed with the screw rod 225.

[0038] Wherein, the connecting rod 122 is a hollow structure, and the inner wall is provided with an internal thread, when the internal thread and the external thread on the outer wall of the screw rod 225 form a threaded pair, when the screw rod 225 rotates, since the connecting rod 122 remains stationary and the spring rod 123 limits the relative rotation of the valve plate 12 and the connecting rod 122, therefore, when the screw rod 225 is rotated by the standby motor 224, the screw rod 225 cannot drive the valve plate 12 to rotate, therefore, when the screw rod 225 rotates, the valve plate 12 is driven to move close to the connecting rod 122, realizing the opening and closing of the valve plate 12 driven by the screw rod 225, the contact plate 226 is installed on the side of the connecting assembly 21 close to the standby motor 224, the contact plate 226 is a controller 121 of the standby motor 224, and the contact plate 226 controls the operation of the standby motor 224 after receiving the instruction.

[0039] Further, the connecting assembly 21 comprises a through groove 211 opened on one side of the valve plate 12, first sliding grooves 212 are opened on the two side walls of the through groove 211, a push plate 213 is slidably connected in the through groove 211, first protrusions 214 are fixedly connected on the two sides of the push plate 213, the first protrusions 214 slide in the first sliding grooves 212, a first limiting plate 215 is fixedly connected on one side of the push plate 213, and a second limiting plate 216 is fixedly connected on the other side of the push plate 213.

[0040] The through groove 211 is arranged on the surface of the valve plate 12 and penetrates the upper and lower ends of the valve plate 12, the push plate 213 slides in the through groove 211, the first sliding groove 212 is arranged on the two sides of the through groove 211, the two ends of the first sliding groove 212 do not penetrate the two ends of the valve plate 12, the first protrusion 214 fixed on the two ends of the push plate 213 slides in the first sliding groove 212, the first sliding groove 212 that does not penetrate limits the sliding displacement of the first protrusion 214, and it is ensured that the push plate 213 cannot be pulled out of the valve plate 12.

[0041] Specifically, the moving groove 217 is arranged on one side of the through groove 211, the second sliding groove 218 is arranged on the two sides of the moving groove 217, the moving group 219 is slidably connected in the moving groove 217, the moving group 219 comprises a magnetic plate 2191, one side of the magnetic plate 2191 is fixedly connected with a control piece 2192, and the second protrusion 2193 is fixedly connected on the two sides of the magnetic plate 2191 and slides in the second sliding groove 218.

[0042] The moving groove 217 is arranged in parallel with the through groove 211, the moving groove 217 is communicated with the through groove 211, the magnetic plate 2191 slides in the moving groove 217, the moving groove 217 does not penetrate the upper and lower ends of the valve plate 12, so that the magnetic plate 2191 cannot be pulled out of the valve plate 12, the second protrusion 2193 is fixed on the two sides of the magnetic plate 2191, the width of the moving groove 217 is the sum of the widths of the magnetic plate 2191 and the second protrusion 2193, the magnetic plate 2191 and the second protrusion 2193 can slide in the moving groove 217, the second sliding groove 218 is arranged in perpendicular to the moving groove 217, the second sliding groove 218 is composed of three grooves, which are a groove for sliding of the magnetic plate 2191 and grooves on the two sides of the groove for sliding of the second protrusion 2193, the control piece 2192 is fixedly connected to the upper end of the magnetic plate 2191, the control piece 2192 is a receiving source of signals sent by the system, when the control piece 2192 is in contact connection with the contact plate 226, the contact plate 226 can receive the signal of the control piece 2192, and the standby motor 224 is controlled, when the signal received by the control piece 2192 is an electromagnetic wave, the electromagnetic wave is converted into an alternating electric field when received, an induced current and a magnetic field are generated, and the magnet is subjected to the magnetic force in the magnetic field. Therefore, the magnetic field drives the magnetic plate 2191 to move, the magnetic plate 2191 moves along the second sliding groove 218 until the control piece 2192 is in contact connection.

[0043] Further, the second limiting plate 216 is located on the two sides of the magnetic plate 2191. The limiting block 111 is fixedly connected in the valve passage 11 and located between the first limiting plates 215.

[0044] The second limiting plate 216 is two plates fixed on the push plate 213 near the screw 225, and the magnetic plate 2191 is located between the two plates of the second limiting plate 216. Similarly, the first limiting plate 215 is two plates fixed on the push plate 213 near the outer side of the valve plate 12, and the limiting block 111 is located between the two plates of the first limiting plate 215. One end of the limiting block 111 is fixed in the valve passage 11. When the system sends a command to close or close the valve plate 12, the limiting block 111 is fixed and the push plate 213 does not move, and the valve plate 12 moves. The push plate 213 moves relative to the valve plate 12. The magnetic plate 2191 in the second limiting plate 216 on one side of the push plate 213 is also fixed and cannot move. At this time, the magnetic plate 2191 is located in the moving groove 217, and the magnetic plate 2191 cannot be in contact with the contact plate 226. The standby motor 224 cannot be started. Because of integral saturation, the controller 121 cannot effectively execute the closing action of the valve. At this time, the magnetic plate 2191 does not have a relative displacement with the valve plate 12. The magnetic plate 2191 moves under the action of the magnetic field. The control piece 2192 is in contact with the contact plate 226. The standby motor 224 starts to replace the controller 121 to control the valve plate 12.

[0045] Finally, it should be noted that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present application.

Claims

1. An integral saturation backup device, characterized by: include, A main body (1), the main body (1) comprising a valve channel (11) and a valve plate (12), the valve plate (12) being provided with a backup opening assembly (2); The standby opening component (2) comprises a connecting component (21) and a power component (22); When the valve plate (12) cannot operate due to integral saturation, the connecting component (21) controls the power component (22) to operate, and the power component (22) controls the valve plate (12) to operate.

2. The integral saturation backup device according to claim 1, characterized in that: One side of the valve plate (12) is fixedly connected to a controller (121), one end of the controller (121) is fixedly connected to a connecting rod (122), one end of the connecting rod (122) is fixedly connected to a plurality of spring rods (123), and one end of the spring rod (123) is fixedly connected to the valve plate (12).

3. The integral saturation backup device according to claim 2, characterized in that: The power assembly (22) includes a cylindrical cavity (221) opened inside the valve plate (12), one end of the cylindrical cavity (221) passes through the valve plate (12), and the other end of the cylindrical cavity (221) is provided with a receiving cavity (222).

4. The integral saturation backup device according to claim 3, characterized in that: The inner wall of the accommodating cavity (222) is fixedly connected to a fixed support rod (223), one end of the fixed support rod (223) is fixedly connected to a spare motor (224), and the output end of the spare motor (224) is fixedly connected to a screw rod (225).

5. The integral saturation backup device according to claim 4, characterized in that: A contact plate (226) is installed on the side wall of the standby motor (224); the connecting rod (122) is a hollow structure; the inner wall of the connecting rod (122) is provided with a thread; and the connecting rod (122) is screwed with the screw rod (225).

6. The integral saturation backup device according to claim 5, characterized in that: The connecting assembly (21) comprises a through groove (211) provided on one side of the valve plate (12), and first sliding grooves (212) are provided on both side walls of the through groove (211).

7. The integral saturation backup device according to claim 6, characterized in that: A push plate (213) is slidably connected in the through slot (211), first protrusions (214) are fixedly connected on both sides of the push plate (213), the first protrusions (214) slide in the first sliding slot (212), a first limiting plate (215) is fixedly connected to one side of the push plate (213), and a second limiting plate (216) is fixedly connected to the other side of the push plate (213).

8. The integral saturation backup device according to claim 7, characterized in that: A movable groove (217) is provided on one side of the through groove (211), and second sliding grooves (218) are provided on both sides of the movable groove (217). A movable group (219) is slidably connected in the movable groove (217), and the movable group (219) includes a magnetic plate (2191), a control plate (2192) is fixedly connected to one side of the magnetic plate (2191), and second protrusions (2193) are fixedly connected to both sides of the magnetic plate (2191), and the second protrusions (2193) slide in the second sliding groove (218).

9. The integral saturation backup device according to claim 8, characterized in that: The second limiting plates (216) are located on both sides of the magnetic plate (2191).

10. The integral saturation backup device according to claim 9, characterized in that: A limiting block (111) is fixedly connected in the valve channel (11), and the limiting block (111) is located between the first limiting plates (215).

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