Digital pole-mounted switch

Abstract

The invention discloses a digital pole-mounted switch, and relates to the field of outdoor overhead power distribution appliances, the digital pole-mounted switch comprises a box body and a pole-type sensor, the box body comprises a box cover consistent with the protection grade of the box body, the pole-type sensor adopts an APG integrated sealing technology, and a current sensor, a voltage sensor, a voltage sensor, a voltage sensor and a power source are arranged in the box body. The box body, the box cover and the pole type sensor are connected through a fastener to form a sealing structure, an energy storage handle is pulled, an energy storage spring in a transmission piece begins to store energy, a pointer is rotated to the position where energy is stored, after energy storage is completed, a closing indication ring in an opening and closing handle is pulled, at the moment, the energy storage spring releases energy, and then the opening and closing handle is opened. The output shaft of the pushing mechanism rotates and drives the switch to be switched on through transmission assemblies such as a crank arm and a connecting rod, and meanwhile, a switching-on pointer points to a switching-on position, so that functional modules can be flexibly selected, and the regional adaptability of products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of outdoor overhead power distribution appliances, in particular to a digital pole-mounted switch. Background Art

[0002] Against the background of the digital transformation of the power grid, State Grid released the "Standardized Design Scheme for 12 kV Primary and Secondary Integrated Pole-mounted Circuit Breakers and Distribution Automation Terminals (FTU) (2021 Edition)" in 2021 and the "Standardized Design Scheme for 12 kV Outdoor Pole-mounted Circuit Breakers (2022 Edition)" released in 2022, which officially made the digital distribution primary and secondary integration solution a recommended standard. The subsequently released "Technical Specifications for Primary and Secondary Integrated Standardized Distribution Equipment of State Grid Corporation of China" and "Professional Inspection Outline for Primary and Secondary Integrated Standardized Pole-mounted Circuit Breakers and Ring Network Boxes of State Grid Corporation of China" both have digital solution products.

[0003] Digital primary and secondary fusion pole-mounted switches have been widely promoted and applied in many provinces and cities due to their high compatibility and scalability, energy saving and environmental protection, and stable signal transmission. According to relevant statistics, in recent years, more than 20 provincial companies of the State Grid and the Southern Grid have tendered for digital pole-mounted switch products, and the bidding volume has also increased year by year. However, although the standardized design ensures the versatility and production efficiency of the product to a certain extent, it also exposes the problems of insufficient regional adaptability and relatively single functions, which limits its further promotion and application in certain specific areas. Therefore, in order to meet the diverse needs of different regions and different application scenarios, it is particularly important to design a digital primary and secondary fusion pole-mounted switch with customizable functions. Summary of the invention

[0004] In view of the above problems existing in the digital pole switch, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to prevent pipeline leakage.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a digital pole-mounted switch, comprising a box body, including a box cover with a protection level consistent with the box body; a pole-type sensor, which adopts integrated sealing technology, and components such as current sensors, voltage sensors, and capacitor power supply modules can also be sealed; the box body, the box cover and the pole-type sensor are connected by fasteners to form a sealing structure.

[0007] As a preferred solution of the digital pole-mounted switch described in the present invention, the voltage sensor sealed in the pole-type sensor can be set at the incoming line end, the outgoing line end or both ends, and the sensor includes a phase voltage sensor and a zero-sequence voltage sensor.

[0008] As a preferred solution of the digital pole-mounted switch described in the present invention, the capacitor power supply module sealed in the pole-type sensor is designed to have the same life cycle as the switch body, the single-phase energy supply is less than 15W, and the energy supply current is less than 10mA.

[0009] As a preferred solution of the digital pole-mounted switch described in the present invention, wherein: the box body is provided with an opening and closing handle, an energy storage handle, a pointer, an energy storage indicator plate, an opening and closing indicator plate, a digital module, a mechanism and a transmission part; the opening and closing of the electrical circuit is realized by the coordinated action of the opening and closing handle, the energy storage handle, the mechanism and the transmission part; the switch state is displayed by the pointer, the energy storage indicator plate and the opening and closing indicator plate; the voltage and current signals detected by the switch are converted into digital signals on-site through the digital module and transmitted to the controller through the aviation socket to realize real-time monitoring of the line.

[0010] As a preferred solution of the digital column switch of the present invention, the digital module adopts modular, expandable, low-power, maintenance-free design standards, and has software and hardware filtering measures to prevent signal jitter and electromagnetic field interference;

[0011] The digital module is provided with a sealing groove and a mounting hole on the outlet end face, and cooperates with a sealing ring to achieve high sealing requirements between the digital module and the box.

[0012] As a preferred solution of the digital pole-mounted switch of the present invention, the protection level of the box body and the box cover can be adjusted according to the application area.

[0013] As a preferred solution of the digital column switch of the present invention, the mechanism can adopt a spring operating mechanism or a permanent magnet operating mechanism.

[0014] As a preferred solution of the digital pole-mounted switch described in the present invention, the pole-type sensor adopts integrated sealing technology to seal the electrical circuit including the vacuum arc extinguishing chamber, the outgoing line side guide rod and other components in outdoor epoxy resin as a whole. In addition, current sensors, voltage sensors, capacitor power supply modules and other components can also be sealed according to requirements, and the specifications and models of the components can be customized.

[0015] As a preferred solution of the digital pole-mounted switch described in the present invention, the current adjustment box, voltage adjustment box and capacitance adjustment box that are matched with the current sensor, voltage sensor and capacitor power supply module can be installed in the shell or sealed in the pole.

[0016] As a preferred solution of the digital pole-mounted switch of the present invention, the energy-drawing current of the pole-type sensor can directly affect the volume of the switch body. The smaller the energy-drawing current, the smaller the volume.

[0017] The beneficial effects of the present invention are:

[0018] 1. The digital pole-mounted switch provided by the present invention can flexibly select functional modules according to the climate conditions, power grid characteristics and specific needs of the area, thereby improving the regional adaptability of the product.

[0019] 2. The digital pole-mounted switch provided by the present invention is helpful to promote the digital transformation and intelligent upgrading of the power grid, realize the comprehensive control and refined management of the operation status of the power grid, and improve the overall management level of the power grid.

[0020] 3. The voltage sensor can be set more flexibly and does not have to be limited to a certain position.

[0021] 4. At the same time, as the energy-taking current becomes smaller, the size of the core can be reduced, thereby reducing the size of the overall device and reducing the floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing 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. Among them:

[0023] Figure 1 This is a scene diagram of a digital column switch.

[0024] Figure 2 This is a structural diagram of a digital column switch.

[0025] Figure 3 A top view of a digital column mounted switch.

[0026] Figure 4 This is the digital module structure diagram of the digital column switch.

[0027] Figure 5 This is the working principle diagram of the digital module of the digital column switch.

[0028] Figure 6 This is the schematic diagram of the capacitor power supply of the digital pole-mounted switch. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Example 1

[0033] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, and provides a digital pole-mounted switch. The digital pole-mounted switch includes a box 100 and a pole-type sensor 200 .

[0034] Specifically, the box body 100 includes a box cover 101 having the same protection level as the box body 100.

[0035] Preferably, the pole-type sensor 200 adopts APG integrated sealing technology, and components such as current sensors, voltage sensors, and capacitor power modules can also be sealed;

[0036] The box body 100, the box cover 101 and the pole type sensor 200 are connected by fasteners to form a sealing structure.

[0037] When in use, manually pull the energy storage handle 103, the energy storage spring in the transmission member 109 starts to store energy, so that the pointer 104 turns to the energy-stored position, so that the switch can be quickly pushed to close when closing. After the energy storage is completed, pull the closing indicator ring in the opening and closing handle 102. At this time, the energy storage spring releases energy, pushing the output shaft of the mechanism to rotate, and driving the switch to close through the transmission components such as the crank arm and the connecting rod. At the same time, the closing indicator needle 104 will point to the closed position. Directly pull the opening indicator ring in the opening and closing handle 102. At this time, the mechanism closing retention will be released, and the contact pressure spring and the opening spring in the transmission component will start to play a role, pushing the output shaft of the mechanism to rotate in the opposite direction. Under the reverse rotation of the output shaft of the mechanism, the switch is opened, and at the same time, the opening indicator needle 104 will point to the opening position.

[0038] Example 2

[0039] Reference Figures 2 to 6 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0040] Specifically, the voltage sensor sealed in the pole-type sensor 200 can be arranged at the incoming line end, the outgoing line end, or both ends, and the sensor includes a phase voltage sensor and a zero-sequence voltage sensor.

[0041] Preferably, the sealed capacitor power supply module in the pole-type sensor 200 is designed to have the same life cycle as the switch body, with a single-phase power supply of less than 15W and a power supply current of less than 10mA.

[0042] Preferably, the box body 100 is provided with a separation handle 102, an energy storage handle 103, a pointer 104, an energy storage indicator plate 105, a separation indicator plate 106, a digital module 107, a mechanism 108 and a transmission member 109;

[0043] The electrical circuit is switched on and off by the coordinated actions of the opening and closing handle 102, the energy storage handle 103, the mechanism 108 and the transmission member 109;

[0044] The switch status is displayed by the pointer 104, the energy storage indicator plate 105, and the opening and closing indicator plate 106;

[0045] The voltage and current signals detected by the switch are converted into digital signals on-site by the digitizing module 107 and transmitted to the controller through the air socket to realize real-time monitoring of the line.

[0046] Preferably, the digital module 107 adopts modular, expandable, low-power, maintenance-free design standards, and has software and hardware filtering measures to prevent signal jitter and electromagnetic field interference;

[0047] The digital module 107 is provided with a sealing groove 107 b and a mounting hole 107 c on the outlet end surface 107 a , which cooperate with a sealing ring to achieve a high sealing requirement between the digital module 107 and the box 100 .

[0048] Preferably, the protection levels of the box body 100 and the box cover 101 can be adjusted according to the application area.

[0049] Preferably, the mechanism 108 can adopt a spring operating mechanism or a permanent magnet operating mechanism.

[0050] Preferably, the pole-type sensor 200 adopts APG integrated sealing technology to seal the electrical circuit including the vacuum arc extinguishing chamber, the line-outlet side guide rod and other components in outdoor epoxy resin. In addition, current sensors, voltage sensors, capacitor power supply modules and other components can also be sealed as required, and the specifications and models of the components can be customized.

[0051] Preferably, the current adjustment box 201, the voltage adjustment box 202, and the capacitance adjustment box 203 that are matched with the current sensor, the voltage sensor, and the capacitor power extraction module can be installed in the shell, and can also be sealed in the pole.

[0052] Preferably, the energy-drawing current of the pole-type sensor 200 can directly affect the volume of the switch body. The smaller the energy-drawing current, the smaller the volume.

[0053] When in use, the current sensor sealed in the pole-type sensor 200 can collect the current signal of the line, and the voltage sensor collects the voltage signal on the incoming line side or the load side or both sides, and converts the current signal and the voltage signal into digital signals through the digital module 107 to achieve lossless transmission. The cast capacitor power module collects the high voltage 10KV voltage and converts it into the required low voltage output for FTU through voltage division and isolation. It has low energy extraction power, low working voltage of the low-voltage arm, and high insulation margin.

[0054] 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 may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A digital column switch, characterized in that: include, A box body (100), comprising a box cover (101) having a protection level consistent with that of the box body (100); The pole-type sensor (200) adopts the APG integrated sealing technology, and components such as the current sensor, the voltage sensor, and the capacitor power module can also be sealed; The box body (100), the box cover (101) and the pole-type sensor (200) are connected via fasteners to form a sealing structure.

2. The digital column switch according to claim 1, characterized in that: The voltage sensor sealed in the pole-type sensor (200) can be arranged at the incoming line end, the outgoing line end or both ends, and the sensor includes a phase voltage sensor and a zero-sequence voltage sensor.

3. The digital column switch according to claim 2, characterized in that: The capacitive power extraction module sealed in the pole-type sensor (200) is designed to have the same life cycle as the switch body, with a single-phase power extraction of less than 15W and a power extraction current of less than 10mA.

4. The digital column switch according to claim 3, characterized in that: The box (100) is provided with a separation and combination handle (102), an energy storage handle (103), a pointer (104), an energy storage indication plate (105), a separation and combination indication plate (106), a digital module (107), a mechanism (108) and a transmission member (109) inside; The on-off of the electrical circuit is achieved through the coordinated actions of the on-off handle (102), the energy storage handle (103), the mechanism (108) and the transmission member (109); The switch state is displayed by means of the pointer (104), the energy storage indication sign (105), and the opening and closing indication sign (106); The voltage and current signals detected by the switch are converted into digital signals on site through a digital module (107) and transmitted to a controller through an air socket to achieve real-time monitoring of the line.

5. The digital column switch according to claim 4, characterized in that: The digital module (107) adopts modular, expandable, low-power, maintenance-free design standards, and has software and hardware filtering measures to prevent signal jitter and electromagnetic field interference; The digital module (107) is provided with a sealing groove (107b) and a mounting hole (107c) on the outlet end surface (107a), which cooperate with a sealing ring to achieve a high sealing requirement between the digital module (107) and the box (100).

6. The digital column switch according to claim 5, characterized in that: The protection levels of the box body (100) and the box cover (101) can be adjusted according to the application area.

7. The digital column switch according to claim 6, characterized in that: The mechanism (108) can be a spring operating mechanism or a permanent magnet operating mechanism.

8. The digital column switch according to claim 7, characterized in that: The pole-type sensor (200) adopts the APG integrated sealing technology to seal the electrical circuit including the vacuum interrupter, the outgoing line side guide rod and other components in outdoor epoxy resin. In addition, components such as current sensors, voltage sensors, and capacitor power supply modules can also be sealed according to requirements. The specifications and models of the components can be customized.

9. The digital column switch according to claim 8, characterized in that: The current adjustment box (201), voltage adjustment box (202) and capacitance adjustment box (203) which are matched with the current sensor, voltage sensor and capacitance power taking module can be installed in the housing or sealed in the pole.

10. The digital pole switch according to claim 9, characterized in that: The energy-drawing current of the pole-type sensor (200) can directly affect the volume of the switch body; the smaller the energy-drawing current, the smaller the volume.

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