阅读说明：本技术 一种光伏并网用框架断路器自动重合闸模块 (Automatic reclosing module of frame circuit breaker for photovoltaic grid connection ) 是由 谢金龙 王球锋 谢法金 伯彩云 孙阿欢 崔健 房玉祥 郝会 于 2020-12-25 设计创作，主要内容包括：本发明涉及断路器技术领域,提供一种光伏并网用框架断路器自动重合闸模块,旨在解决当断路器在超限跳闸后,必须要供电部门到现场配合用户恢复供电,使用不是很方便的问题,包括前侧开口的壳体,所述壳体的开口处匹配设有前盖,且壳体的一侧弧形凸起形成有手柄安装部,且手柄安装部中部开设有手柄开口,手柄开口内插设有手柄,且手柄位于壳体内的一端通过手柄转轴转动安装在手柄安装部内壁上；所述壳体内设有重合闸单元和用于驱动重合闸单元自动合闸的驱动单元,所述重合闸单元包括中部转动安装在壳体内腔后壁上的三岔转动拨杆。本发明尤其适用于光伏并网的自动重合闸,具有较高的社会使用价值和应用前景。(The invention relates to the technical field of circuit breakers, and provides an automatic reclosing module of a frame circuit breaker for photovoltaic grid connection, which aims to solve the problem that a power supply department must cooperate with a user to recover power supply on site after the circuit breaker trips in an overrun mode, and the automatic reclosing module is not very convenient to use; the reclosing unit and the driving unit used for driving the reclosing unit to automatically close are arranged in the shell, and the reclosing unit comprises a three-branch rotating deflector rod, the middle of the three-branch rotating deflector rod is rotatably installed on the rear wall of the inner cavity of the shell. The automatic reclosing device is particularly suitable for photovoltaic grid-connected automatic reclosing, and has high social use value and application prospect.)

1. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection comprises a shell with an opening at the front side, and is characterized in that a front cover is arranged at the opening of the shell in a matched mode, a handle mounting part is formed on an arc-shaped bulge on one side of the shell, a handle opening is formed in the middle of the handle mounting part, a handle is inserted into the handle opening, and one end, located in the shell, of the handle is rotatably mounted on the inner wall of the handle mounting part through a handle rotating shaft;

the automatic reclosing device is characterized in that a reclosing unit and a driving unit used for driving the reclosing unit to automatically close are arranged in the shell, the reclosing unit comprises a three-branch rotating driving lever, the middle of the three-branch rotating driving lever is rotatably installed on the rear wall of an inner cavity of the shell, first supporting rods, second supporting rods and third supporting rods which are arranged in a triangular mode are sequentially distributed on the three-branch rotating driving lever, an arc-shaped rack is installed at the tail end of each second supporting rod of the three-branch rotating driving lever, the arc-shaped rack is meshed with a circular gear I, a circular gear II with the diameter smaller than that of the circular gear I is coaxially installed on the circular gear I, a circular gear III is meshed with the circular gear II, an arc-shaped rack is further meshed with.

2. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection as claimed in claim 1, wherein: the drive unit comprises a drive motor fixedly mounted on the rear wall of the inner cavity of the shell, a drive bevel gear is mounted at the output end of the drive motor, the drive bevel gear is meshed with a driven bevel gear, the driven bevel gear is coaxially mounted on the front wall of the belt pulley I, the belt pulley I is rotatably mounted on the rear wall of the inner cavity of the shell, the belt pulley I is connected with a belt pulley II through a transmission belt, a poking rod is mounted on the front side of the belt pulley II with the same axis, a poking column is mounted on the front side of the other end of the poking rod, the poking column is arranged in one of a plurality of bar-shaped poking grooves formed in the annular side wall of the directional turntable.

3. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection as claimed in claim 2, wherein: the rear end coaxial arrangement of band pulley II has fan-shaped wheel piece, and fan-shaped wheel piece's edge sliding conflict has conflict post, and the terminal front side at first branch is installed to the conflict post.

4. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection as claimed in claim 2, wherein: and a positioning column is arranged on a third supporting rod of the three-branch rotating shifting rod, the positioning column is positioned in the strip-shaped shifting groove at the lowest part in the non-tripping stage of the circuit breaker, an expansion spring is arranged at one end of the third supporting rod, which deviates from the directional rotating disc, and the other end of the expansion spring is arranged on the inner wall of the shell.

5. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection as claimed in claim 1, wherein: the intersection angle of the two sides of the arc-shaped rack and the circle center is 70-100 degrees.

6. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection as claimed in claim 1, wherein: the intersection angle of the two sides of the arc-shaped rack and the circle center is 70-110 degrees.

7. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection as claimed in claim 1, wherein: the time relay is arranged in the shell and is respectively connected with a movable contact block and a static contact block through two wires, the movable contact block is fixedly arranged at the tail end of one side of the arc-shaped rack, and the static contact block is arranged on the inner wall of one side, close to the movable contact block, of the shell in a matched mode.

8. The automatic reclosing module of the frame circuit breaker for the photovoltaic grid connection as claimed in claim 1, wherein: and a state display screen for displaying the connection and disconnection states of the circuit is embedded in one side of the shell corresponding to the handle.

Technical Field

The invention relates to the technical field of circuit breakers, in particular to an automatic reclosing module of a frame circuit breaker for photovoltaic grid connection.

Background

Solar power generation is a beneficial complement of traditional power generation, and in view of the importance of the solar power generation on environmental protection and economic development, developed countries have no full power to promote solar power generation work, and medium-and small-scale solar power generation has already formed an industry. The solar power generation has 2 modes of photovoltaic power generation and solar thermal power generation, wherein the photovoltaic power generation has the outstanding advantages of simple maintenance, adjustable power and the like, and is widely applied as a medium-sized and small-sized grid-connected power supply.

The existing photovoltaic grid connection needs to be matched with a circuit breaker for use, the circuit breaker is a switching device which can close, bear and break current under the condition of a normal loop and can close, bear and break current under the condition of an abnormal loop within a specified time, and the frame circuit breaker is a mechanical switch type circuit breaker and can effectively cut off and connect a load circuit and cut off a fault circuit, so that the accident expansion is prevented, and the safe operation is ensured. When the circuit breaker is tripped in an overrun mode, a power supply department is required to return power supply to the site in cooperation with a user, and the circuit breaker is inconvenient to use.

The patent with the publication number of CN101325327B discloses an intelligent load-limiting circuit breaker with an automatic reclosing function, which comprises a circuit breaker control unit and a release, wherein the control unit comprises a three-phase current sampling module and a central processing unit, the output end of the central processing unit is also connected with an automatic reclosing action mechanism, the device enables the automatic reclosing action mechanism to delay automatic reclosing under the control of the central processing unit, and the overload power consumer is given the opportunity of self-checking.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an automatic reclosing module of a frame breaker for photovoltaic grid connection, which overcomes the defects of the prior art, has reasonable design and compact structure and aims to solve the problem that a power supply department is required to be matched with a user to recover power supply after the breaker trips in an overrun mode, and the use is not very convenient.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

an automatic reclosing module of a frame circuit breaker for photovoltaic grid connection comprises a shell with an opening on the front side, wherein a front cover is arranged at the opening of the shell in a matched mode, a handle mounting part is formed on an arc-shaped bulge on one side of the shell, a handle opening is formed in the middle of the handle mounting part, a handle is inserted into the handle opening, and one end, located in the shell, of the handle is rotatably mounted on the inner wall of the handle mounting part through a handle rotating shaft;

the automatic reclosing device is characterized in that a reclosing unit and a driving unit used for driving the reclosing unit to automatically close are arranged in the shell, the reclosing unit comprises a three-branch rotating driving lever, the middle of the three-branch rotating driving lever is rotatably arranged on the rear wall of an inner cavity of the shell, a first supporting rod, a second supporting rod and a third supporting rod which are arranged in a triangular mode are sequentially distributed on the three-branch rotating driving lever, an arc-shaped rack is mounted at the tail end of the second supporting rod of the three-branch rotating driving lever, the arc-shaped rack is meshed with a circular gear I, a circular gear II with the diameter smaller than the circular gear I is coaxially mounted on the circular gear I, a circular gear III is meshed with the circular gear II, an arc-shaped rack is further.

Preferably, the driving unit comprises a driving motor fixedly installed on the rear wall of the inner cavity of the shell, a driving bevel gear is installed at the output end of the driving motor, the driving bevel gear is meshed with a driven bevel gear, the driven bevel gear is coaxially installed on the front wall of the belt wheel I, the belt wheel I is rotatably installed on the rear wall of the inner cavity of the shell, the belt wheel I is connected with a belt wheel II through a transmission belt, a poking rod is coaxially installed on the front side of the belt wheel II, a poking column is installed on the front side of the other end of the poking rod, the poking column is arranged in one of a plurality of strip-shaped poking grooves formed in the annular side wall of the directional turntable, and the directional turntable.

Preferably, the rear end coaxial arrangement of band pulley II has fan-shaped wheel piece, and fan-shaped wheel piece's edge sliding conflict has the conflict post, and the conflict post is installed in the terminal front side of first branch.

Preferably, a positioning column is installed on a third supporting rod of the three-branch rotating shifting rod, the positioning column is located in the strip-shaped shifting groove at the lowest position in the non-tripping stage of the circuit breaker, an expansion spring is installed at one end, deviating from the directional rotating disc, of the third supporting rod, and the other end of the expansion spring is installed on the inner wall of the shell.

Preferably, the intersection angle of the two sides of the arc-shaped rack and the circle center is 70-100 degrees.

Preferably, the intersection angle of the two sides of the arc-shaped rack and the circle center is 70-110 degrees.

Preferably, a time relay is arranged in the shell, the time relay is respectively connected with a movable contact block and a static contact block through two wires, the movable contact block is fixedly arranged at the tail end of one side of the arc-shaped rack, and the static contact block is arranged on the inner wall of one side, close to the movable contact block, of the shell in a matched mode.

Preferably, a state display screen for displaying the connection and disconnection states of the circuit is embedded in one side of the shell corresponding to the handle.

(III) advantageous effects

The embodiment of the invention provides an automatic reclosing module of a frame breaker for photovoltaic grid connection, which has the following beneficial effects:

in the invention, the handle trips to the lower part when the frame breaker is in short circuit, the driving motor is started to drive the driving bevel gear to engage with the transmission mechanism of the driven bevel gear, then the belt wheel I is driven to rotate, and then the belt transmission mechanism of the belt wheel I, the transmission belt and the belt wheel II is matched to drive the poke rod to rotate for a circle, when the poke column at the tail end of the poke rod rotates to enter the poke groove, the sector wheel sheet rotates to the concave part, the contact column of the contact sector wheel sheet drives the three-branch rotating deflector rod to rotate clockwise, the positioning column on the third supporting rod of the three-branch rotating deflector rod leaves the other strip-shaped deflector groove, the arc-shaped rack on the second supporting rod rotates clockwise, and the meshing transmission of a plurality of gears is combined, and then drive the handle along handle pivot clockwise upset to the top, the use of cooperation time relay realizes regularly drive upset, has guaranteed the automatic reclosing of frame circuit breaker.

Drawings

The above features, technical features, advantages and implementation manners of the automatic reclosing module of the frame circuit breaker for photovoltaic grid connection will be further described in the following detailed description of preferred embodiments in a clearly understandable manner and with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic view of a driving unit in the structure of the present invention;

fig. 4 is a schematic diagram of a reclosing unit in the structure of the invention.

In the figure: the device comprises a shell 1, a front cover 2, a handle 3, a handle rotating shaft 301, a handle opening 4, a state display screen 5, a driving motor 6, a driving bevel gear 7, a driven bevel gear 8, a belt pulley I9, a transmission belt 10, a belt pulley II, a poking rod 11, a poking column 12, a directional rotating disc 13, a strip-shaped poking groove 131, a sector wheel sheet 14, a touch column 15, a three-way rotating poking rod 16, a first supporting rod 161, a second supporting rod 162, a third supporting rod 163, an arc-shaped rack 17, a circular gear I18, a circular gear II 19, a circular gear III 20, an arc-shaped rack 21, a movable contact block 22, a static contact block 23, a time relay 24, a positioning column 25 and a telescopic spring 26.

Detailed Description

The invention will be further illustrated with reference to the following figures 1-4 and examples:

example 1

An automatic reclosing module of a frame circuit breaker for photovoltaic grid connection comprises a shell 1 with an opening at the front side, wherein a front cover 2 is arranged at the opening of the shell 1 in a matched mode, a handle mounting part is formed on an arc-shaped bulge at one side of the shell 1, a handle opening 4 is formed in the middle of the handle mounting part, a handle 3 is inserted into the handle opening 4, and one end, located in the shell 1, of the handle 3 is rotatably mounted on the inner wall of the handle mounting part through a handle rotating shaft 301;

the automatic reclosing device is characterized in that a reclosing unit and a driving unit used for driving the reclosing unit to automatically close are arranged in the shell 1, the reclosing unit comprises a three-branch rotating shifting rod 16, the middle of the three-branch rotating shifting rod 16 is rotatably arranged on the rear wall of an inner cavity of the shell 1, a first supporting rod 161, a second supporting rod 162 and a third supporting rod 163 which are arranged in a triangular mode are sequentially distributed on the three-branch rotating shifting rod 16, an arc-shaped rack 17 is installed at the tail end of the second supporting rod 162 of the three-branch rotating shifting rod 16, a circular gear I18 is meshed with the arc-shaped rack 17, a circular gear II 19 with the diameter smaller than the diameter of the circular gear I18 is coaxially installed on the circular gear I18, the circular gear II 19 is meshed with a circular gear III 20, an arc-shaped rack 21 is further.

In this embodiment, as shown in the figure, the drive unit includes drive motor 6 of fixed mounting on the wall behind the 1 inner chamber of casing, and install drive bevel gear 7 on drive motor 6's the output, drive bevel gear 7 meshes has driven bevel gear 8, and driven bevel gear 8 coaxial arrangement is on the antetheca of band pulley I9, and band pulley I9 rotates and installs on the wall behind the 1 inner chamber of casing, band pulley I9 is connected with band pulley II through driving belt 10, poking rod 11 is installed to the front side coaxial core of band pulley II, poking column 12 is installed to the other end front side of poking rod 11, poking column 12 sets up in one of a plurality of bar poking grooves 131 that offer on directional rotary table 13 annular side wall, and directional rotary table 13 rotates and installs on the wall behind the 1 inner chamber of casing.

In this embodiment, as shown in fig. 4, a sector wheel piece 14 is coaxially installed at the rear end of the pulley ii, an abutting column 15 is slidably abutted to the edge of the sector wheel piece 14, the abutting column 15 is installed on the front side of the end of the first supporting rod 161, and the positioning of the directional rotating disc 13 is effectively ensured, so that the slipping is prevented, and the potential safety hazard of electricity utilization is caused.

In this embodiment, as shown in fig. 4, a positioning column 25 is installed on a third supporting rod 163 of the three-way rotating shift lever 16, the positioning column 25 is located in the lowermost strip-shaped shift slot 131 in the non-tripping stage of the circuit breaker, and an end of the third supporting rod 163 away from the directional rotating disc 13 is installed with a telescopic spring 26, and the other end of the telescopic spring 26 is installed on the inner wall of the housing 1, so as to effectively ensure the position positioning of the three-way rotating shift lever 16.

In this embodiment, as shown in fig. 2 to 4, the intersection angle between the two sides of the arc-shaped rack 17 and the circle center is 70 to 100 degrees, so as to ensure the rotational engagement.

In this embodiment, as shown in fig. 2 and 3, the intersection angle between the two sides of the arc-shaped rack 21 and the circle center is 70-110 °, so as to ensure rotational engagement.

In this embodiment, as shown in fig. 1 and 2, a state display screen 5 for displaying a circuit connection and disconnection state is embedded in one side of the housing 1 corresponding to the position of the handle 3, and is used for judging the state of the frame circuit breaker.

Example 2

The difference between this embodiment and embodiment 1 is that, as shown in fig. 2, a time relay 24 is disposed in the housing 1, the time relay 24 is connected to a movable contact block 22 and a fixed contact block 23 through two wires, the movable contact block 22 is fixedly mounted at the end of one side of the arc-shaped rack 21, the fixed contact block 23 is mounted on the inner wall of the housing 1 close to one side of the movable contact block 22 in a matching manner, when tripping occurs, the fixed contact block 23 abuts against the movable contact block 22, and the time relay 24 is used in cooperation, so that the timed driving and turning-over are realized, and the automatic reclosing of the frame circuit breaker is ensured.

Other undescribed structures refer to example 1.

According to the automatic reclosing module of the frame circuit breaker for photovoltaic grid connection in the embodiment of the invention, as can be seen from the attached drawings, when the frame circuit breaker is in short circuit, the handle 3 trips to the lower part, the driving motor 6 is started to drive the driving bevel gear 7 to engage with the transmission mechanism of the driven bevel gear 8, further the driving pulley I9 rotates, and then the belt transmission mechanisms of the pulley I9, the transmission belt 10 and the pulley II are matched to drive the poking rod 11 to rotate for a circle, when the poking column 12 at the tail end of the poking rod 11 rotates to enter the poking groove 231, the sector wheel 14 rotates to the inner concave part, at the moment, the abutting column 15 abutting against the sector wheel 14 drives the three-way rotating poking rod 16 to rotate clockwise, the positioning column 25 on the third support rod 163 of the three-way rotating poking rod 16 leaves the other strip-shaped poking groove 131, at the moment, the arc-shaped rack 17 on the second support rod 162 rotates, Round gear II 19 meshing round gear III 20, round gear III 20 meshing arc rack 21, and then drive handle 3 along handle pivot 301 clockwise upset to the top, the use of cooperation time relay 24 realizes the upset of regularly driven, has guaranteed the reclose of frame circuit breaker.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.