Digital electro-hydraulic executing device for high-power thermal power unit

Abstract

The utility model discloses a digital electro -hydraulic executing device for high -power thermal power generating unit. The device includes electro -hydraulic actuator body, cooling mechanism and plugging mechanism. Plugging mechanism is used for liquid inlet pipe sealing, it is characterized by being equipped with plugging cover, rubber plugging ring, first strong magnet ring and second strong magnet ring, and rubber plugging ring abuts and seals liquid inlet pipe spout, and two strong magnet rings attract each other to enhance the sealing property, and the liquid inlet pipe is equipped with detachable filter screen, and the utility model discloses through magnetic attraction and physical double sealing, has solved the cooling liquid leakage problem, and convenient filter screen dismounting simultaneously has improved maintenance efficiency, has guaranteed the high -efficient heat dissipation and long -term stable operation of device.

Description

Technical Field

[0001] This utility model relates to the field of electro-hydraulic actuators, and in particular to a digital electro-hydraulic actuator for high-power thermal power units. Background Technology

[0002] Currently, in high-power thermal power generating units, digital electro-hydraulic actuators serve as core control components. The stability and reliability of their performance are crucial to the safe and efficient operation of the entire unit. During operation, these devices generate a large amount of heat due to the high-power operation of their internal motors, hydraulic systems, and other components. If the heat cannot be effectively dissipated, long-term accumulation will lead to excessively high internal temperatures, which in turn will affect the performance of the hydraulic oil, accelerate component aging, and even cause a decline in the performance of the actuator itself or direct damage, thereby endangering the stability and safety of the entire unit.

[0003] To address the aforementioned heat dissipation issues, existing electro-hydraulic actuators are typically equipped with cooling systems. However, in practical applications, these cooling systems still have shortcomings in terms of coolant filling and maintenance. For example, coolant filling ports are often sealed with simple caps or threaded plugs. This traditional sealing method suffers from reduced sealing performance when faced with vibrations generated during high-power generator operation and material aging caused by long-term service, easily leading to coolant leakage. Once coolant leaks, not only will cooling efficiency decrease, affecting the heat dissipation of the actuator body, but it will also pollute the surrounding environment and increase maintenance costs. Furthermore, when the cooling system needs coolant replacement, the traditional filling port structure makes the operation relatively cumbersome and lacks effective secondary safety measures.

[0004] Therefore, existing digital electro-hydraulic actuators used in high-power thermal power units urgently need to innovate the sealing structure of their coolant filling ports while ensuring the stable operation of their core execution functions, in order to solve the structural defects of coolant leakage and inconvenient maintenance.

[0005] Therefore, this utility model proposes a digital electro-hydraulic actuator for high-power thermal power units to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a digital electro-hydraulic actuator for high-power thermal power units, aiming to improve the problems in the prior art, such as insufficient sealing reliability of the coolant filling port, easy leakage, and inconvenient cleaning and maintenance of the coolant filtration device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a digital electro-hydraulic actuator for high-power thermal power units, comprising: an electro-hydraulic actuator body; a cooling mechanism for cooling the electro-hydraulic actuator body, the cooling mechanism being provided with an inlet pipe for adding coolant; and a sealing mechanism.

[0008] The sealing mechanism is used to seal the inlet pipe. The sealing mechanism includes a sealing cap that is detachably placed over the opening of the inlet pipe; a rubber sealing ring placed on the sealing cap; a first strong magnetic ring placed on the sealing cap; and a second strong magnetic ring that is placed around the outer edge of the opening of the inlet pipe.

[0009] Furthermore, the rubber sealing ring abuts against and seals the inlet of the liquid inlet pipe when the sealing cap is closed, and the first strong magnetic ring and the second strong magnetic ring attract each other magnetically when the sealing cap is closed to enhance the sealing performance.

[0010] Preferably, the inlet pipe is equipped with a filter screen inside.

[0011] Preferably, the inner wall of the liquid inlet pipe is provided with a sliding groove, and the outer edge of the filter screen is provided with a slider that slides in cooperation with the sliding groove.

[0012] Preferably, the cooling mechanism includes a water tank for storing coolant and communicating with the inlet pipe; a cooling shell covering the exterior of the electro-hydraulic actuator body; a cooling pipe disposed inside the cooling shell; and a circulating water pump for driving the coolant to circulate between the water tank and the cooling pipe.

[0013] Preferably, the cooling mechanism further includes a miniature cooling fan, which is disposed adjacent to the water tank and is used to dissipate heat from the coolant in the water tank.

[0014] Preferably, the device further includes a dust cover, which is disposed over one end of the electro-hydraulic actuator body.

[0015] Preferably, the device further includes a control box electrically connected to the electro-hydraulic actuator body for sending control commands to it.

[0016] Preferably, the axial thickness of the rubber sealing ring in its natural state is greater than the gap between the sealing cap and the inlet pipe when the first strong magnetic ring and the second strong magnetic ring are fully attracted.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting a sealing mechanism with both magnetic attraction and physical sealing, the problem of poor sealing of the coolant filling port and leakage risk in the prior art is solved, and the technical effect of enhancing sealing reliability and effectively preventing coolant leakage is achieved.

[0018] 2. In this utility model, by setting a detachable filter screen inside the liquid inlet pipe, and the filter screen having a slider that cooperates with the slide groove, the problem of cumbersome cleaning and maintenance of the filter device in the prior art is solved, and the technical effect of convenient filter screen disassembly and high cleaning and maintenance efficiency is achieved. Attached Figure Description

[0019] Figure 1 This is a perspective view of a digital electro-hydraulic actuator for a high-power thermal power unit proposed in this utility model; Figure 2 This is a schematic diagram of a cooling pipe for a digital electro-hydraulic actuator for a high-power thermal power unit proposed in this utility model; Figure 3 This is a schematic diagram of a dust cover for a digital electro-hydraulic actuator for a high-power thermal power unit proposed in this utility model; Figure 4 This is a schematic diagram of the cooling mechanism of a digital electro-hydraulic actuator for a high-power thermal power unit proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] Legend: 1. Electro-hydraulic actuator body; 2. Control box; 3. Cooling mechanism; 301. Cooling shell; 302. Cooling pipe; 303. Water tank; 304. Miniature radiator fan; 305. Circulating water pump; 306. Dust cover; 4. Sealing mechanism; 401. Liquid inlet pipe; 402. Filter screen; 403. Slide groove; 404. Slider; 405. Rubber sealing ring; 406. Sealing cover; 407. First strong magnetic ring; 408. Second strong magnetic ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-5 The present invention provides an embodiment of a digital electro-hydraulic actuator for high-power thermal power units, which aims to solve the problems in the prior art, such as poor heat dissipation during long-term operation leading to unstable performance, unreliable sealing of coolant filling port, and inconvenience in cleaning and maintaining filter screen.

[0023] The digital electro-hydraulic actuator for high-power thermal power units includes an electro-hydraulic actuator body 1 and a cooling mechanism 3 that exchanges heat with the electro-hydraulic actuator body 1. The electro-hydraulic actuator body 1 serves as the core execution unit of the entire digital electro-hydraulic actuator, receiving external commands and executing corresponding actions. The cooling mechanism 3 dissipates the heat generated during the operation of the device to maintain the stable operating temperature of the electro-hydraulic actuator body 1.

[0024] The sealing mechanism 4 is used to seal the inlet pipe 401. The sealing mechanism 4 includes a sealing cap 406, which is detachably mounted on the opening of the inlet pipe 401, and a rubber sealing ring 405, which is mounted on the sealing cap 406. When the sealing cap 406 is closed, the rubber sealing ring 405 abuts against and seals the opening of the inlet pipe 401, achieving a physical seal.

[0025] Meanwhile, the sealing mechanism 4 also includes a first strong magnetic ring 407 disposed on the sealing cover 406, and a second strong magnetic ring 408 disposed around the outer edge of the inlet pipe 401. The first strong magnetic ring 407 and the second strong magnetic ring 408 magnetically attract each other when the sealing cover 406 is closed, providing additional magnetic attraction to enhance the sealing performance and prevent loosening or leakage due to vibration or accidental impact. This dual magnetic and physical sealing structure ensures a long-term reliable seal at the coolant filling port.

[0026] The axial thickness of the rubber sealing ring 405 in its natural state is greater than the gap between the sealing cap 406 and the inlet pipe 401 when the first strong magnetic ring 407 and the second strong magnetic ring 408 are fully attracted. This ensures that the rubber sealing ring 405 can be effectively compressed and tightly fitted to the pipe opening under the action of magnetic attraction, thereby achieving a reliable sealing effect.

[0027] For the power source that drives the electro-hydraulic actuator body 1 to move, those skilled in the art can use a variety of conventional methods such as motors and hydraulic pumps. The specific internal structure is a well-known technology in the field and will not be described in detail here.

[0028] In order to filter impurities in the coolant, the inside of the inlet pipe 401 is equipped with a filter screen 402. The filter screen 402 can effectively block particles and impurities from entering the water tank 303 and protect the cleanliness of the cooling system.

[0029] For easy disassembly and cleaning of filter 402, please refer to... Figure 1 and Figure 2 The inner wall of the liquid inlet pipe 401 is provided with a sliding groove 403. The outer edge of the filter screen 402 is provided with a slider 404 that slides in conjunction with the sliding groove 403. By pulling the filter screen 402, the slider 404 can move within the sliding groove 403, realizing the quick disassembly and installation of the filter screen 402, which is convenient for daily maintenance and cleaning.

[0030] To ensure efficient operation of the cooling system, please refer to... Figure 1 and Figure 2 The cooling mechanism 3 further includes: a water tank 303 for storing coolant, the internal channel of which is connected to the inlet pipe 401 for easy filling of coolant; and a cooling shell 301 that covers the exterior of the electro-hydraulic actuator body 1, forming a channel for coolant flow.

[0031] Cooling pipe 302, located inside cooling shell 301, is the pipe through which coolant actually flows and exchanges heat with electro-hydraulic actuator body 1. Circulating water pump 305 is connected to water tank 303 and cooling pipe 302 through pipes, and is used to drive coolant to circulate between water tank 303, cooling pipe 302 and cooling shell 301, thereby continuously removing the heat generated by electro-hydraulic actuator body 1.

[0032] In order to effectively cool the coolant, the cooling mechanism 3 also includes a miniature cooling fan 304. The miniature cooling fan 304 is located near the water tank 303 and dissipates heat from the coolant in the water tank 303 by forced air cooling, thereby reducing the coolant temperature and ensuring that the cooling system can continuously provide low-temperature coolant.

[0033] In another preferred embodiment, in order to prevent external dust and impurities from entering the electro-hydraulic actuator body 1, the device also includes a dust cover 306. The dust cover 306 is placed over one end of the electro-hydraulic actuator body 1 to form a protective barrier, effectively blocking dust, moisture and other impurities in the external environment, thereby protecting the precision components inside the electro-hydraulic actuator body 1 from contamination and damage, and extending the service life of the equipment.

[0034] To achieve intelligent control of the device, the device also includes a control box 2. The control box 2 is electrically connected to the electro-hydraulic actuator body 1 and integrates electronic control circuits and a processor. It is used to receive external commands and send precise control signals to the electro-hydraulic actuator body 1, thereby realizing precise control and coordinated operation of the entire digital electro-hydraulic actuator.

[0035] Working principle: When using this digital electro-hydraulic actuator for high-power thermal power units, the whole device mainly relies on the electro-hydraulic actuator body 1 to receive the instructions from the control box 2 to perform actions, and the cooling mechanism 3 dissipates the heat generated during the operation of the device.

[0036] When the electro-hydraulic actuator body 1 generates heat during operation, the circulating water pump 305 in the cooling mechanism 3 delivers the coolant from the water tank 303 to the cooling pipe 302. The coolant flows within the cooling shell 301, exchanging heat with the electro-hydraulic actuator body 1 and absorbing the heat it generates. The heated coolant then flows back to the water tank 303. At this time, the miniature cooling fan 304 starts to dissipate heat from the coolant in the water tank 303, ensuring the coolant maintains a low temperature for recirculation and cooling. The dust cover 306 prevents external dust and other impurities from entering the electro-hydraulic actuator body 1.

[0037] When the coolant in the cooling mechanism 3 needs to be replaced, the sealing mechanism 4 can be used. First, the operator can add coolant to the water tank 303 through the inlet pipe 401. The filter screen 402 on the inlet pipe 401 can filter impurities in the coolant. To remove the filter screen 402, the filter screen 402 can be pulled directly to move the slider 404 along the slide groove 403, thereby quickly cleaning and maintaining the filter screen 402. When sealing, by pressing the sealing cover 406, the rubber sealing ring 405 and the sealing cover 406 are moved, so that the rubber sealing ring 405 fits tightly against the opening of the inlet pipe 401. At the same time, the first strong magnetic ring 407 and the second strong magnetic ring 408 attract each other, enhancing the sealing performance and preventing coolant leakage. Through this dual sealing effect of magnetic attraction and physical sealing of the sealing mechanism 4, this utility model solves the problems of poor sealing of the coolant filling port and inconvenient maintenance in the prior art.

Claims

1. A digital electro-hydraulic actuator for high-power thermal power units, comprising: Electro-hydraulic actuator body (1); Cooling mechanism (3), the cooling mechanism (3) is used to cool the electro-hydraulic actuator body (1), the cooling mechanism (3) is provided with a liquid inlet pipe (401) for adding coolant, characterized in that it further includes: A sealing mechanism (4) is used to seal the inlet pipe (401); the sealing mechanism (4) includes: a sealing cap (406) which is detachably installed on the opening of the inlet pipe (401); A rubber sealing ring (405) is provided on the sealing cover (406). When the sealing cover (406) is closed, the rubber sealing ring (405) abuts against and seals the opening of the liquid inlet pipe (401). A first strong magnetic ring (407) is disposed on the sealing cover (406); The second strong magnetic ring (408) is arranged around the outer edge of the inlet of the liquid inlet pipe (401). The first strong magnetic ring (407) and the second strong magnetic ring (408) attract each other magnetically when the sealing cap (406) is closed to enhance the sealing performance.

2. The digital electro-hydraulic actuator for high-power thermal power units according to claim 1, characterized in that, The inlet pipe (401) is equipped with a filter screen (402).

3. The digital electro-hydraulic actuator for high-power thermal power units according to claim 2, characterized in that, The inner wall of the liquid inlet pipe (401) is provided with a sliding groove (403), and the outer edge of the filter screen (402) is provided with a slider (404) that slides in cooperation with the sliding groove (403).

4. The digital electro-hydraulic actuator for high-power thermal power units according to claim 1, characterized in that, The cooling mechanism (3) includes: A water tank (303) is used to store coolant and is connected to the inlet pipe (401); A cooling shell (301) covers the outside of the electro-hydraulic actuator body (1); a cooling pipe (302) is disposed inside the cooling shell (301); A circulating water pump (305) is used to drive the coolant to circulate between the water tank (303) and the cooling pipe (302).

5. The digital electro-hydraulic actuator for high-power thermal power units according to claim 4, characterized in that, The cooling mechanism (3) also includes a miniature cooling fan (304), which is located adjacent to the water tank (303) and is used to dissipate heat from the coolant in the water tank (303).

6. The digital electro-hydraulic actuator for high-power thermal power units according to claim 1, characterized in that, The device also includes a dust cover (306) which is placed over one end of the electro-hydraulic actuator body (1).

7. The digital electro-hydraulic actuator for high-power thermal power units according to claim 1, characterized in that, The device also includes a control box (2), which is electrically connected to the electro-hydraulic actuator body (1) and is used to send control commands to it.

8. The digital electro-hydraulic actuator for high-power thermal power units according to claim 1, characterized in that, The natural axial thickness of the rubber sealing ring (405) is greater than the gap between the sealing cap (406) and the inlet of the liquid inlet pipe (401) when the first strong magnetic ring (407) and the second strong magnetic ring (408) are fully attracted.

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