High temperature environment electric actuator assembly

Abstract

The utility model discloses a high temperature environment electric actuator combination structure, electric actuator body is installed in the water tank, and the water tank has the water inlet and the drain, and the water tank outside is wrapped heat -insulation layer, and the water tank has circulating water for cooling down, and the heat -insulation layer adopts three or multilayer composite structure, including inner layer equipment contact layer temperature -resistant fabric, middle interlayer heat -insulation material, outer layer fire -resistant temperature -resistant coating material, and the inner layer and middle interlayer are pasted together, and the outer layer is coated on the middle interlayer, and the inner layer adopts high -temperature -resistant high -strength sewing thread and is sewn into the bag body, and the bag body is consistent with the water tank shape and is thus sleeved on the water tank outside. Advantageous effects are, through set up heat -insulation layer, can play the heat exchange of blocking electric actuator and external high temperature environment, and the cooling effect of circulating water is timely heat dissipation and cooling for electric actuator, prevents electric actuator temperature excessively high influence work, and further enhanced the stability of electric actuator work under high temperature environment.

Description

Technical Field

[0001] This invention relates to the field of electric actuator technology, specifically to a high-temperature environment electric actuator assembly structure. Background Technology

[0002] Electric actuators are a common valve driving device in industrial automatic control systems. Current technology allows electric actuators to operate in environments with a non-operating temperature range of -0°C to +80°C and an operating temperature range of -30°C to +50°C. However, electric actuators for air valves used in subways and tunnels need to withstand temperatures up to 250°C and operate normally at that temperature for at least one hour to prevent disruptions to normal train operation in the event of a sudden fire or other accident. Additionally, there are other high-temperature steam operating environments. Therefore, insulation and cooling measures are necessary. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides a combined structure for an electric actuator in a high-temperature environment.

[0004] This utility model is achieved through the following technical solution: A high-temperature environment electric actuator assembly structure is characterized in that: the electric actuator body is installed in a water tank, the water tank has a water inlet and a water outlet, the outside of the water tank is wrapped with a heat insulation layer, and the water tank contains circulating water for cooling. The heat insulation layer adopts a three- or multi-layer composite structure, including an inner layer of heat-resistant fabric for equipment contact, an intermediate layer of heat insulation material, and an outer layer of fire-resistant and heat-resistant coating material. The inner layer and the intermediate layer are bonded together, and the outer layer is coated on the intermediate layer. The inner layer is sewn with high-temperature and high-strength sewing thread to form a bag, and the bag is consistent with the shape of the water tank so that it fits over the outside of the water tank. The electric actuator body includes an interconnected motor, a speed reduction transmission device, and an encoder. The motor and encoder are covered with waterproof covers, and the speed reduction transmission device is covered with a waterproof housing.

[0005] The heat insulation layer is fixed to the water tank using a multi-method durable fixing structure. The middle layer is bound with high-temperature resistant straps and serves as a handle. The high-temperature resistant straps are connected and fixed with metal rivets. The installation opening of the heat insulation layer is closed with high-temperature resistant Velcro. The shrink opening of the heat insulation layer is tied with high-temperature resistant fixing ropes. The end of the high-temperature resistant straps is adjusted with metal D-rings.

[0006] The motor and encoder are connected to a high-temperature resistant cable via a waterproof cable connector, and the high-temperature resistant cable extends out of the water tank via the waterproof cable connector; a tempered glass observation window is installed on the waterproof cover.

[0007] The output end of the electric actuator body is connected to a linear guide device, which is located outside the water tank. The linear guide device includes an upper mounting base, which is fixedly connected to a lower flange via several support columns. An outer protective cylinder is also installed between the upper mounting base and the lower flange, and the outer protective cylinder is wrapped with a heat insulation layer. The upper part of the upper mounting base is fixedly connected to the lower end of the waterproof housing of the electric actuator body. A rotating shaft is mounted on the upper part of the upper mounting base via a bearing. The rotating shaft is connected to the output shaft of the reduction transmission device. The lower part of the rotating shaft is threadedly connected to a guide threaded cylinder. A sliding limit plate is fixedly connected to the lower end of the guide threaded cylinder. The sliding limit plate has a C-shaped guide groove that slides with the support column, allowing it to slide up and down on the support column to prevent the guide threaded cylinder from rotating. A pushing and buffering assembly is installed at the lower part of the guide threaded cylinder.

[0008] In the linear guide device, the push and buffer assembly includes a spring cavity installed below the guide threaded cylinder, and a push rod and a spring installed inside the spring cavity; the upper end of the push rod has a plate, the lower end of the spring abuts against the upper surface of the plate, and the upper end of the spring abuts against the upper wall of the spring cavity; the plate is located inside the spring cavity, and the push rod passes through the middle hole of the spring cavity and exits the spring cavity.

[0009] In the linear stroke guide device, the lower part of the upper mounting base is equipped with a guide cylinder, which is located outside the rotating shaft and the guide thread cylinder; a wear-resistant guide sleeve is installed in the guide groove of the sliding limit plate.

[0010] The beneficial effects of this utility model are that by setting a heat insulation layer, the heat exchange between the electric actuator and the external high-temperature environment can be blocked, and the cooling effect of the circulating water can dissipate heat and cool down the electric actuator in time, preventing the electric actuator from overheating and affecting its operation, and further enhancing the stability of the electric actuator in high-temperature environments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall design of this utility model. Figure 2 This is a schematic diagram of the heat insulation layer of the water tank. Figure 3 This is a schematic diagram of the inside of the spring cavity. Figure 4 This is a schematic diagram of the push rod and the plate.

[0012] In the diagram: 1. Water tank; 2. Thermal insulation layer; 3. Circulating water; 4. Inner layer of equipment contact layer, heat-resistant fabric; 5. Middle layer of thermal insulation material; 6. Outer layer of fireproof and heat-resistant coating material; 7. Waterproof cover; 8. Motor; 9. Terminal block; 10. Encoder; 11. Waterproof enclosure; 12. Waterproof cable connector; 13. High-temperature resistant cable; 14. High-temperature resistant strapping; 15. Metal rivet; 16. High-temperature resistant Velcro; 17. Metal D-ring; 18. High-temperature resistant fixing rope; 19. Upper mounting base; 20. Support column; 21. Lower flange II; 22. Outer protective cylinder; 23. Rotating shaft; 24. Guide threaded cylinder; 25. Sliding limit plate; 26. C-shaped guide groove; 27. Guide cylinder; 28. Lower flange I; 29. ​​Push rod; 30. Spring; 31. Spring cavity; 32. Tempered glass observation window; 33. Flat plate. Detailed Implementation

[0013] The attached figure shows a specific embodiment of this utility model.

[0014] This utility model relates to a high-temperature environment electric actuator assembly structure, in which the electric actuator body is installed in a water tank 1, the water tank has an inlet and an outlet, the outside of the water tank is wrapped with a heat insulation layer 2, and the water tank contains circulating water 3 for cooling. The heat insulation layer 2 adopts a three-layer or multi-layer composite structure, including an inner equipment contact layer heat-resistant fabric 4, an intermediate interlayer heat insulation material 5, and an outer fireproof and heat-resistant coating material 6. The inner layer and the intermediate interlayer are bonded together, and the outer layer is coated on the intermediate interlayer. The inner layer is sewn with high-temperature and high-strength sewing thread to form a bag body, and the bag body is consistent with the shape of the water tank so as to fit on the outside of the water tank. The electric actuator body includes a motor 8, a speed reduction transmission device and an encoder 10 connected to each other. The motor and encoder are covered with a waterproof cover 7, and the speed reduction transmission device is covered with a waterproof housing 11.

[0015] The heat insulation layer 2 is fixed to the water tank 1 using a multi-method durable fixing structure. The middle layer is bound with high-temperature resistant strapping 14 and serves as a handle. The high-temperature resistant strapping 14 is connected and fixed with metal rivets 15. High-temperature resistant Velcro 16 is used to close the installation opening of the heat insulation layer. The shrinkage opening of the heat insulation layer is tied with high-temperature resistant fixing rope 18. The end of the high-temperature resistant strapping 17 is adjusted with metal D-rings.

[0016] Terminal 9 is installed on one side of the motor. The motor and encoder are connected to a high-temperature resistant cable 13 through a waterproof cable connector 12. The high-temperature resistant cable passes through the waterproof cable connector 12 and extends to the outside of the water tank. A tempered glass observation window 32 is installed on the waterproof cover.

[0017] The output end of the electric actuator body is connected to a linear guide device, which is located outside the water tank 1. The linear guide device includes an upper mounting base 19, which is fixedly connected to a lower flange 28 via several support columns 20. An outer protective cylinder 22 is also installed between the upper mounting base and the lower flange, and the outer protective cylinder is wrapped with a heat insulation layer 2. The upper part of the upper mounting base is fixedly connected to the lower end of the waterproof housing 11 of the electric actuator body. The upper part of the upper mounting base is mounted with a rotating shaft 23 via a bearing. The rotating shaft is connected to the output shaft of the reduction transmission device. The lower part of the rotating shaft is threadedly connected to a guide threaded cylinder 24. The lower end of the guide threaded cylinder is fixedly connected to a sliding limit plate 25. The sliding limit plate is provided with a C-shaped guide groove 26 that slides with the support column 20, and slides up and down on the support column to prevent the guide threaded cylinder 24 from rotating. A pushing and buffering assembly is installed at the lower part of the guide threaded cylinder.

[0018] In the linear guide device, the push and buffer assembly includes a spring cavity 31 installed below the guide threaded cylinder 24, and a push rod 29 and a spring 30 installed inside the spring cavity; the upper end of the push rod has a plate 33, the lower end of the spring abuts against the upper surface of the plate, and the upper end of the spring abuts against the upper wall of the spring cavity; the plate is located inside the spring cavity, and the push rod passes through the middle hole of the spring cavity and exits the spring cavity.

[0019] In the linear stroke guide device, the lower part of the upper mounting base 19 is equipped with a guide cylinder 27, which is located outside the rotating shaft 23 and the guide threaded cylinder 24; a wear-resistant guide sleeve is installed in the guide groove of the sliding limit plate 25.

[0020] The outer coating of the thermal insulation layer 2 can be polyurethane powder coating. The material of the intermediate interlayer thermal insulation layer and the inner heat-resistant fabric can be silicon-titanium alloy coated cloth + thermal insulation blanket + inner lining coated cloth.

[0021] The reduction gear transmission device of the electric actuator body can adopt a worm gear structure, a bevel gear set structure, or other gear set structures.

[0022] 1. Basic parameters of electric actuators This electric actuator can operate under an ambient pressure of 1.0 MPa and a temperature of 200°C steam, and it adopts a split structure.

[0023] The electronic integrated linear electric actuator is small in size, light in weight, low in energy consumption, powerful in function, highly reliable, and easy to operate. It features high efficiency, high protection performance, low noise, high intelligence, and safety. It can be operated on-site or remotely controlled. It can be widely used in industries such as power, metallurgy, petroleum, chemical, papermaking, pharmaceutical, steel, water treatment, and desulfurization, as well as various gas pipelines and high-temperature pipelines. With a maximum stroke of 120mm and a maximum thrust of 100KN, it is suitable for the on / off and regulation control of various linear valves, dampers, pipelines, and similar mechanisms and equipment.

[0024] Features: It is small in size, light in weight, highly integrated, and the matching valves make pipeline installation very simple and convenient.

[0025] The key component controller uses advanced hybrid integrated circuits and is cast and cured with resin. After aging treatment, it has high reliability and is moisture-proof and shockproof. The low inertia, high torque motor allows it to quickly reach peak torque after startup, resulting in high output thrust. The motor is equipped with a brake and has a built-in thermal protection switch to prevent damage to the motor.

[0026] The explosion-proof electric actuator features a double-seal protection design. When opening the terminal box cover for field wiring, the individually sealed terminal box can still ensure the sealing integrity of the electrical components inside the electric actuator.

[0027] 2. Insulation layer materials Product Parameters Temperature range: -75°C to 1170°C Thermal conductivity: <0.035 W / (m·K) (at room temperature) Material density: 100-200 kg / m³ Overall thickness: 40mm Flame retardant performance: Class A non-combustible Corrosion resistance: Resistant to general acid and alkali corrosion. Service life: 5 years or more.

[0028] 3. Motor information Motor parameters: Damping motor 90W 80F Working voltage: 380V ±10% 3PH 50HZ.

[0029] 4. Encoder data The split-type electric actuator uses an opto-magnetic absolute encoder to measure and memorize the absolute position of the angle. Within its measuring range, the rotation angle and number of rotations are unique. It transmits single-turn angle and multi-turn values ​​via a digital interface, capable of memorizing up to 4096 turns. The single-turn resolution is 10 bits (0.351 degrees). Position information is not lost even when power is off (no battery required, mechanical memory). It features strong anti-interference capabilities, shock resistance, and dust resistance.

[0030] Single-circle resolution: 10-bit binary Operating voltage: 5V±0.5V Multi-revolving range: ≤4096 revolves Operating current: ≤32mA@5V Maximum speed 1000rpm Operating temperature: -40~120℃ Communication methods: UART / RS-485 Communication rate: 9600 (UART).

Claims

1. A high-temperature environment electric actuator assembly structure, characterized in that: The electric actuator body is installed in the water tank, which has an inlet and a outlet. The outside of the water tank is wrapped with a heat insulation layer, and there is circulating water in the water tank for cooling. The heat insulation layer adopts a three- or multi-layer composite structure, including an inner layer of heat-resistant fabric for equipment contact, an intermediate layer of heat insulation material, and an outer layer of fire-resistant and heat-resistant coating material. The inner layer and the intermediate layer are bonded together, and the outer layer is coated on the intermediate layer. The inner layer is sewn with high-temperature and high-strength sewing thread to form a bag, and the bag is consistent with the shape of the water tank so that it fits over the outside of the water tank. The electric actuator body includes an interconnected motor, a speed reduction transmission device, and an encoder. The motor and encoder are covered with waterproof covers, and the speed reduction transmission device is covered with a waterproof housing.

2. The high-temperature environment electric actuator assembly structure according to claim 1, characterized in that: The heat insulation layer is fixed to the water tank using a multi-method durable fixing structure. The middle layer is bound with high-temperature resistant straps and serves as a handle. The high-temperature resistant straps are connected and fixed with metal rivets. The installation opening of the heat insulation layer is closed with high-temperature resistant Velcro. The shrink opening of the heat insulation layer is tied with high-temperature resistant fixing ropes. The end of the high-temperature resistant straps is adjusted with metal D-rings.

3. The high-temperature environment electric actuator assembly structure according to claim 1, characterized in that: The motor and encoder are connected to a high-temperature resistant cable via a waterproof cable connector, and the high-temperature resistant cable extends out of the water tank via the waterproof cable connector; a tempered glass observation window is installed on the waterproof cover.

4. The high-temperature environment electric actuator assembly structure according to claim 1, characterized in that: The output end of the electric actuator body is connected to a linear guide device, which is located outside the water tank. The linear guide device includes an upper mounting base, which is fixedly connected to a lower flange via several support columns. An outer protective cylinder is also installed between the upper mounting base and the lower flange, and the outer protective cylinder is wrapped with a heat insulation layer. The upper part of the upper mounting base is fixedly connected to the lower end of the waterproof housing of the electric actuator body. A rotating shaft is mounted on the upper part of the upper mounting base via a bearing. The rotating shaft is connected to the output shaft of the reduction transmission device. The lower part of the rotating shaft is threadedly connected to a guide threaded cylinder. A sliding limit plate is fixedly connected to the lower end of the guide threaded cylinder. The sliding limit plate has a C-shaped guide groove that slides with the support column, allowing it to slide up and down on the support column to prevent the guide threaded cylinder from rotating. A pushing and buffering assembly is installed at the lower part of the guide threaded cylinder.

5. The high-temperature environment electric actuator assembly structure according to claim 1, characterized in that: In the linear guide device, the push and buffer assembly includes a spring cavity installed below the guide threaded cylinder, and a push rod and a spring installed inside the spring cavity; the upper end of the push rod has a plate, the lower end of the spring abuts against the upper surface of the plate, and the upper end of the spring abuts against the upper wall of the spring cavity; the plate is located inside the spring cavity, and the push rod passes through the middle hole of the spring cavity and exits the spring cavity.

6. The high-temperature environment electric actuator assembly structure according to claim 1, characterized in that: In the linear stroke guide device, the lower part of the upper mounting base is equipped with a guide cylinder, which is located outside the rotating shaft and the guide thread cylinder; a wear-resistant guide sleeve is installed in the guide groove of the sliding limit plate.

Images