Environment-friendly isolating switch based on servo motor driving and servo system

Abstract

The invention discloses an environment-friendly isolating switch based on servo motor driving and a servo system, and relates to the technical field of high-voltage switches, and the environment-friendly isolating switch comprises an isolating switch body unit which comprises a tank body, a first shielding cover arranged in the tank body, and contact parts arranged at the two sides of the first shielding cover, the transmission rod is arranged below the contact part; and the servo motor unit comprises a mounting shell arranged below the disconnecting switch body unit, an insulating rotating shaft arranged on the mounting shell, and a transmission part arranged in the mounting shell. The isolating switch has the advantages of high environmental protection and emission reduction, accurate control and the like, overcomes the defects of large size, complex structure, inaccurate response time and the like of an isolating switch using a traditional operating mechanism, and can be widely applied to the fields of intelligent power grids and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switches, and in particular to an environmentally friendly isolating switch and a servo system driven by a servo motor. Background Art

[0002] Sulfur hexafluoride gas insulated switchgear has been widely used in the power switch industry. Although traditional sulfur hexafluoride gas insulated high-voltage switchgear has excellent performance, sulfur hexafluoride gas has a great impact on the greenhouse effect, which is thousands of times that of carbon dioxide. Therefore, using clean air instead of sulfur hexafluoride gas is an effective means to reduce greenhouse gas emissions.

[0003] Traditional high-voltage switchgear uses motors and spring mechanisms to drive, which have disadvantages such as poor flexibility and large operating impact. With the rapid development of modern rare earth permanent magnet motor technology, power electronics technology, motor vector control technology and mechanical design technology, new servo motors and their control systems are getting closer and closer to the requirements of high-voltage switch operation in terms of torque output capacity, rotor inertia, response time and follow-up ability, and their output angle, speed and energy control performance are getting higher and higher, which lays the foundation for new motor operating mechanisms used in high-voltage switches. Using servo motors to drive operating mechanisms is an important topic in the current power industry.

[0004] As a key device of the digital power grid, the digital circuit breaker will greatly improve the performance of the switchgear with its high efficiency, reliability and stability. It will change the traditional switch design and operation and maintenance concepts, transition from a pure "power" form to a "power + computing power" form, and realize digital empowerment. Through its powerful digital capabilities, the digital circuit breaker will fundamentally improve the reliability of rapid fault clearance and isolation in the power system.

[0005] However, the current level of intelligence of digital GIS equipment is still low, and fault prediction cannot be achieved. The reliability level of digital GIS equipment itself needs to be improved, and poor application effect is the main contradiction at present. In order to solve these problems, the use of servo motor drive technology can solve the problem of standardized control of the mechanism and can achieve micro-movement of the motor without power outage.

[0006] In order to reduce the greenhouse effect and improve the mechanical performance, a new type of environmentally friendly isolating switch driven by a servo motor actuator is proposed. Summary of the invention

[0007] In view of the above problems existing in the existing environmentally friendly isolating switches driven by servo motors, the present invention is proposed.

[0008] Therefore, the present invention provides an environmentally friendly isolating switch driven by a servo motor, the purpose of which is to reduce the greenhouse effect and improve mechanical properties. A new environmentally friendly isolating switch driven by a servo motor operating mechanism is proposed.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0010] The isolating switch body unit comprises a tank body, a first shielding cover arranged in the tank body, contact parts arranged on both sides of the first shielding cover, and a transmission rod arranged below the contact parts;

[0011] The servo motor unit comprises a mounting shell arranged below the isolating switch body unit, an insulating rotating shaft arranged on the mounting shell, and a transmission part arranged in the mounting shell.

[0012] As a preferred solution of the servo motor-driven environmentally friendly isolating switch described in the present invention, the contact portion includes a moving component arranged on one side of the first shielding cover, and a fixed component arranged on a side of the first shielding cover away from the moving component.

[0013] As a preferred solution of the environmentally friendly isolating switch driven by a servo motor described in the present invention, the moving component includes a second shielding cover arranged on one side of the first shielding cover, and moving contacts connected to both ends of the second shielding cover, and a third shielding cover is arranged on the side of the moving contact away from the second shielding cover.

[0014] As a preferred solution of the environmentally friendly isolating switch driven by a servo motor described in the present invention, the fixed component includes a fourth shielding cover arranged on the side of the first shielding cover away from the moving contact, and static contacts connected to both ends of the fourth shielding cover, and the static contact and the fourth shielding cover are flexibly connected by a spring.

[0015] As a preferred solution of the environmentally friendly isolating switch based on servo motor drive described in the present invention, wherein: the first shielding cover, the second shielding cover, the third shielding cover and the fourth shielding cover are all set to be U-shaped, the outer surfaces of the first shielding cover, the second shielding cover, the third shielding cover and the fourth shielding cover are smooth, and the two sides of the bottom surface of the U-shape are bent inward to form arc-shaped tentacles, and the top surface of the U-shape is bent inward to form an arc-shaped baffle.

[0016] As a preferred solution of the environmentally friendly isolating switch based on servo motor drive described in the present invention, the transmission part includes a driving component connected to the insulating shaft and a transmission component arranged on the driving component.

[0017] As a preferred solution of the environmentally friendly isolating switch driven by a servo motor described in the present invention, the driving assembly includes a first motor connected to the insulating rotating shaft, a first gear arranged on the first motor, a worm rotatably connected to the first gear, and a worm wheel meshing with the surface of the worm.

[0018] As a preferred solution of the servo motor-driven environmentally friendly isolating switch of the present invention, the transmission assembly includes a second gear meshing with the surface of the worm gear, and an opening and closing indicator arranged on the second gear.

[0019] Another object of the present invention is to overcome the above technical problems and provide a servo system based on servo motor drive: comprising an environmentally friendly isolating switch based on servo motor drive, and also comprising:

[0020] The servo driver, after receiving the control command, sends a signal to the servo motor unit and drives it to move;

[0021] The encoder feeds back the motion parameters of the servo motor unit to the servo driver to form a closed-loop control system.

[0022] As a preferred solution of the servo system based on servo motor drive described in the present invention, the control command received by the servo driver includes a position, speed, torque or current controller, and outputs a corresponding control signal to realize the control of the servo motor unit.

[0023] Beneficial effects of the present invention: Environmental protection and emission reduction: using clean air for insulation can reduce greenhouse gas emissions; the servo motor mechanism has smooth movement and small impact, which can reduce noise pollution and conform to the concept of green manufacturing and sustainable development.

[0024] Precise control: The servo motor has the characteristics of fast response and precise control, which can realize the fast and precise opening and closing of the isolation switch, and improve the safety and stability of the power grid operation.

[0025] In summary, the present invention has the advantages of high environmental protection, emission reduction, precise control, etc., and overcomes the shortcomings of the isolating switch using the traditional operating mechanism, such as large size, complex structure and inaccurate response time, and can be widely used in the fields of smart grids. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The figure is a schematic diagram of the overall structure of the environmentally friendly isolating switch driven by a servo motor according to the present invention.

[0028] Figure 2 The present invention is a schematic structural diagram of an isolating switch body unit of an environmentally friendly isolating switch driven by a servo motor.

[0029] Figure 3 The schematic diagram of the shielding cover structure of the environmentally friendly isolating switch driven by a servo motor according to the present invention.

[0030] Figure 4 The figure is a schematic diagram of the structure of the servo motor unit of the environmentally friendly isolating switch driven by a servo motor according to the present invention.

[0031] Figure 5 The figure is a schematic diagram of the working principle of the servo system driven by a servo motor according to the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] Example 1, reference Figure 1-3 , which is the first embodiment of the present invention, provides an environmentally friendly isolating switch based on servo motor drive, the device includes an isolating switch body unit 100, including a tank body 101, which provides physical support and protection for the device, a first shielding cover 102 arranged in the tank body 101, a contact part 103 arranged on both sides of the first shielding cover 102 to reduce external electromagnetic interference and protect internal components, and a transmission rod 104 arranged below the contact part 103;

[0037] The servo motor unit 200 includes a mounting shell 201 disposed below the isolating switch body unit 100, an insulating shaft 202 disposed on the mounting shell 201 to ensure electrical insulation and prevent current leakage, and a transmission part 203 disposed in the mounting shell 201 to transmit the movement of the servo motor unit 200 to the isolating switch body unit 100 to achieve precise control.

[0038] Among them, the contact part 103 includes a movable component 103a arranged on one side of the first shielding cover 102, and a fixed component 103b arranged on the side of the first shielding cover 102 away from the movable component 103a. Under the action of the servo motor unit 200, the movable component 103a moves toward the fixed component 103b, thereby generating or disconnecting contact, thereby improving the reliability of the circuit connection.

[0039] During use, the staff turns on the servo motor unit 200, so that it transmits the action to the moving component 103a through the insulating shaft 202 and the transmission rod 104, causing it to move toward the fixed component 103b, thereby making or breaking contact, improving the reliability of the circuit connection, and enhancing the electromagnetic compatibility and maintenance convenience of the equipment.

[0040] Example 2, reference Figure 1-4 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the moving component 103a includes a second shielding cover 103a-1 arranged on one side of the first shielding cover 102 to provide additional electromagnetic shielding, and a moving contact 103a-2 connected to both ends of the second shielding cover 103a-1, which moves with the movement of the moving component 103a to realize the opening and closing of the circuit, and a third shielding cover 103a-3 is arranged on the side of the moving contact 103a-2 away from the second shielding cover 103a-1, which provides additional electromagnetic shielding for the part of the moving contact 103a-2 away from the second shielding cover 103a-1, further protects the moving contact 103a-2, and reduces electromagnetic interference. The additional shielding cover can reduce the malfunction of the moving contact 103a-2 due to electromagnetic interference during operation, thereby improving the safety of operation.

[0041] Compared with Example 1, further, the fixed component 103b includes a fourth shielding cover 103b-1 arranged on the side of the first shielding cover 102 away from the moving contact 103a-2, which protects the static contact 103b-2 from external electromagnetic interference and ensures the safety and reliability of operation, and static contacts 103b-2 connected to both ends of the fourth shielding cover 103b-1, which cooperate with the moving contact 103a-2 to achieve circuit connection and disconnection. The static contact 103b-2 and the fourth shielding cover 103b-1 are flexibly connected by a spring, so that the contact point of the static contact seat can be offset in any direction by a certain angle, which ensures that even if there is a certain angle deviation of the moving contact 103a-2, the moving and static contacts 103b-2 can still be fully in contact to ensure closing.

[0042] Compared with Example 1, further, the first shielding cover 102, the second shielding cover 103a-1, the third shielding cover 103a-3 and the fourth shielding cover 103b-1 are all set to be U-shaped, which helps to improve the mechanical strength of the overall structure. The outer surfaces of the first shielding cover 102, the second shielding cover 103a-1, the third shielding cover 103a-3 and the fourth shielding cover 103b-1 are smooth, which reduces the accumulation of external factors such as dust, dirt, etc., and reduces the switch electric field value to meet the requirements of clean air insulation. The two sides of the bottom surface of the U-shape are respectively bent inward to form arc-shaped tentacles M to provide additional electrical connection points and increase the shielding effect. The top surface of the U-shape is bent inward to form an arc-shaped baffle N to block the propagation of the arc, reduce the damage of the arc to the internal components of the isolating switch, and extend the life of the equipment.

[0043] Compared with Example 1, further, the transmission part 203 includes a driving component 203a connected to the insulating shaft 202, which converts the movement of the servo motor unit 200 into a linear motion or a required specific motion suitable for the operation of the isolating switch, and a transmission component 203b arranged on the driving component 203a, which further transmits the motion generated by the driving component 203a to ensure precise control of the opening and closing action of the isolating switch. Precise control and reduced energy loss can reduce the risk during operation and improve the safety of the system.

[0044] Compared with Example 1, further, the driving component 203a includes a first motor 203a-1 connected to the insulating shaft 202, which provides a power source, converts electrical energy into mechanical energy, and drives the entire transmission system. The first gear 203a-2 arranged on the first motor 203a-1, the worm 203a-3 rotatably connected to the first gear 203a-2, and the worm wheel 203a-4 meshing with the surface of the worm 203a-3 transmit the power generated by the first motor 203a-1. The worm 203a-3 cooperates with the first gear 203a-2 to convert rotational motion into linear motion to achieve motion conversion. The cooperation between the worm 203a-3 and the worm wheel 203a-4 can achieve efficient rotation-linear motion conversion, provide a precise transmission ratio, make the action of the isolating switch more precise, and can also achieve self-locking of the mechanism to improve safety.

[0045] Compared with Example 1, further, the transmission assembly 203b includes a second gear 203b-1 meshing with the surface of the worm gear 203a-4, providing a precise transmission ratio to ensure that the operation of the disconnector is more accurate and reliable, and an opening and closing indicator 203b-2 arranged on the second gear 203b-1, so that the operator can intuitively understand the current state of the disconnector (closed or open), thereby improving the intuitiveness and safety of the operation.

[0046] The remaining structures are the same as those of Example 1.

[0047] Example 3, reference Figure 1-5 , which is the third embodiment of the present invention, this embodiment provides a servo system based on servo motor drive, including an environmentally friendly isolating switch based on servo motor drive, and also including,

[0048] After receiving the control command, the servo driver 300 sends a signal to the servo motor unit 200 and drives it to move. The servo driver 300 will adjust the motion state of the servo motor unit 200 in real time according to the input control command and the feedback signal of the encoder 400;

[0049] The encoder 400 feeds back the motion parameters of the servo motor unit 200 to the servo driver 300 to form a closed-loop control system. By using the absolute magnetic encoder 400 chip, the absolute position, electrical angle and mechanical angle of the motor can be recorded at all times. According to the control program, the servo motor unit 200 can be accurately started and stopped at the corresponding positions of opening and closing the switch, and the limit device of the conventional operating mechanism can be eliminated.

[0050] Compared with Example 2, further, the control command received by the servo driver 300 includes a position, speed, torque or current controller, and outputs a corresponding control signal to realize the control of the servo motor unit 200. When the servo driver 300 receives the control command, it will send a corresponding drive signal to the servo motor unit 200 to drive it to rotate; at the same time, the encoder 400 will monitor the motion parameters of the servo motor (such as position, speed, etc.) in real time, and feed back these parameters to the servo driver 300.

[0051] The servo driver 300 compares the feedback signal with the target value, and if there is a difference, the drive signal is adjusted to correct the difference, thereby achieving precise control of the servo motor unit 200 .

[0052] The servo motor unit 200 is the actuator of the servo system, and its working principle can be simply summarized as: input control signal → servo controller → servo motor → output motion. Specifically, when the servo motor unit 200 receives the control signal, it will rotate or stop according to the requirements of the signal; at the same time, the encoder 400 will monitor its motion state in real time and feed back this state information to the servo driver 300. The servo driver 300 adjusts and optimizes the motion of the servo motor unit 200 in real time according to the feedback signal.

[0053] Since the servo motor can provide braking torque, the motor slows down when the contacts make contact, and the force of the contacts hitting is smaller, which reduces the impact and increases the mechanical life of the mechanism.

[0054] The remaining structure is the same as that of Example 2.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An environmentally friendly isolating switch driven by a servo motor, characterized in that: include, An isolating switch body unit (100) comprises a tank body (101), a first shielding cover (102) arranged in the tank body (101), contact parts (103) arranged on both sides of the first shielding cover (102), and a transmission rod (104) arranged below the contact parts (103); The servo motor unit (200) comprises a mounting shell (201) arranged below the isolating switch body unit (100), an insulating rotating shaft (202) arranged on the mounting shell (201), and a transmission part (203) arranged in the mounting shell (201).

2. The environmentally friendly isolating switch based on servo motor drive according to claim 1 is characterized in that: The contact portion (103) comprises a moving component (103a) arranged on one side of the first shielding cover (102), and a fixed component (103b) arranged on a side of the first shielding cover (102) away from the moving component (103a).

3. The environmentally friendly isolating switch based on servo motor drive according to claim 2 is characterized in that: The moving component (103a) comprises a second shielding cover (103a-1) arranged on one side of the first shielding cover (102), and a moving contact (103a-2) connected to both ends of the second shielding cover (103a-1), and a third shielding cover (103a-3) is arranged on the side of the moving contact (103a-2) away from the second shielding cover (103a-1).

4. The environmentally friendly isolating switch based on servo motor drive according to claim 3 is characterized in that: The fixed assembly (103b) comprises a fourth shielding cover (103b-1) arranged on a side of the first shielding cover (102) away from the moving contact (103a-2), and a stationary contact (103b-2) connected to both ends of the fourth shielding cover (103b-1), and the stationary contact (103b-2) and the fourth shielding cover (103b-1) are flexibly connected via a spring.

5. The environmentally friendly isolating switch based on servo motor drive according to claim 4 is characterized in that: The first shielding cover (102), the second shielding cover (103a-1), the third shielding cover (103a-3) and the fourth shielding cover (103b-1) are all arranged in a U shape, and the outer surfaces of the first shielding cover (102), the second shielding cover (103a-1), the third shielding cover (103a-3) and the fourth shielding cover (103b-1) are smooth, and the two sides of the bottom surface of the U shape are respectively bent inward to form arc-shaped tentacles (M), and the top surface of the U shape is bent inward to form an arc-shaped baffle (N).

6. The environmentally friendly isolating switch based on servo motor drive according to claim 5 is characterized in that: The transmission part (203) comprises a driving component (203a) connected to the insulating rotating shaft (202), and a transmission component (203b) arranged on the driving component (203a).

7. The environmentally friendly isolating switch based on servo motor drive according to claim 6 is characterized in that: The driving assembly (203a) comprises a first motor (203a-1) connected to the insulating rotating shaft (202), a first gear (203a-2) arranged on the first motor (203a-1), a worm (203a-3) rotatably connected to the first gear (203a-2), and a worm wheel (203a-4) meshing with the surface of the worm (203a-3).

8. The environmentally friendly isolating switch based on servo motor drive according to claim 7 is characterized in that: The transmission assembly (203b) comprises a second gear (203b-1) meshing with the surface of the worm gear (203a-4), and an opening / closing indicating portion (203b-2) arranged on the second gear (203b-1).

9. A servo system based on servo motor drive, characterized in that: The environmentally friendly isolating switch based on servo motor drive according to any one of claims 1 to 8 further comprises: A servo driver (300) sends a signal to the servo motor unit (200) after receiving a control command and drives the servo motor unit (200) to move; The encoder (400) feeds back the motion parameters of the servo motor unit (200) to the servo driver (300) to form a closed-loop control system.

10. The servo system based on servo motor drive according to claim 9, characterized in that: The control command received by the servo driver (300) includes a position, speed, torque or current controller, and outputs a corresponding control signal to achieve control of the servo motor unit (200).

Images