A relay protection tripping circuit termination device for nuclear power plants

Abstract

The present invention belongs to the field of electrical technology, and particularly relates to a relay protection tripping circuit termination device for nuclear power plants. The termination device includes a cover plate, a magnetic attraction terminal interface, a terminal interface spring contact, a spring termination base, a display diode, and a terminal wire. Among them, the inner surface of the cover plate is provided with a magnetic attraction terminal interface, which is connected in the middle through a display diode. The cover plate is connected to the spring termination base, and the upper surface of the spring termination base is provided with a terminal interface spring contact, and the lower part of the terminal interface spring contact is connected to the terminal wire. The termination device has the functions of waterproof, dustproof, and anti-electric leakage, has a simple structure, a small volume, is convenient for installation and use, can be widely applied to the generator transformer protection system device of nuclear power plants, can reduce the working time and human error, and has good promotion and application prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of electricity, and particularly relates to a terminal connection device for a relay protection tripping circuit in a nuclear power plant. Background Art

[0002] The safe operation of the relay protection system is the most important safety guarantee for the power system, and the safe operation of related equipment in the relay protection system is particularly important. Due to the particularity of equipment such as relay protection devices, a "terminal connection device" must be designed on the tripping circuit, which is an important guarantee means to ensure the safe operation of the relay protection system. This terminal connection device is a visible disconnection point to the naked eye, which is convenient for operators to judge whether the tripping circuit of the relay protection device can connect to the tripping coil of the switch, providing great convenience for maintenance and operation. However, it also adds a non-fully closed disconnection point to the protection system of the substation. Due to the particularity of the relay protection tripping circuit terminal connection device, the two sides cannot be energized simultaneously under normal conditions, and the input and withdrawal of the terminal connection device of the tripping circuit are manually operated, and it entirely depends on the responsibility and actual technical level of the operators to ensure proper operation. Therefore, in actual operation, due to improper input and withdrawal of the pressure plate, the phenomenon that the protection system fails to act correctly occurs frequently.

[0003] Therefore, it is necessary to provide a terminal connection device for a relay protection tripping circuit in a nuclear power plant to solve the deficiencies of the existing technology. Summary of the Invention

[0004] The purpose of the present invention is to provide a terminal connection device for a relay protection tripping circuit in a nuclear power plant, which is convenient for operators to judge the tripping circuit of the relay protection device and can connect to the tripping coil of the switch through operation.

[0005] Technical solutions for achieving the purpose of the present invention:

[0006] A novel terminal connection device for a tripping circuit in a nuclear power plant, which includes a cover plate, a magnetic adsorption terminal interface, a spring contact of the terminal interface, a spring terminal connection base, a display diode, and a terminal wire; wherein, the inner surface of the cover plate is provided with a magnetic adsorption terminal interface, and the middle of the magnetic adsorption terminal interface is connected through a display diode. The cover plate is connected to the spring terminal connection base, and the upper surface of the spring terminal connection base is provided with a spring contact of the terminal interface, and the lower part of the spring contact of the terminal interface is connected to the terminal wire.

[0007] The cover plate and the spring terminal connection base are connected by a hinge.

[0008] The inner surface of the cover plate is provided with a magnetic adsorption buckle boss, and the magnetic adsorption buckle boss is made of magnet material.

[0009] The outer surface of the cover plate is provided with an opening and closing handle to facilitate the opening and closing of the cover plate.

[0010] The outer surface of the cover plate is provided with display diodes, and the middle of the magnetic attraction end interface is connected through the display diodes.

[0011] The display diodes are light-emitting diodes.

[0012] The magnetic attraction end interface is made of "I"-shaped conductive copper material.

[0013] The upper surface of the spring end connection base is provided with a magnetic attraction groove, and the magnetic attraction buckle boss is magnetically attracted to each other to close and fasten the cover plate and the spring end connection base.

[0014] There are two spring contacts at the end interface, and the spring contacts at the end interface are made of conductive copper material.

[0015] One end of the end connection wire is connected to the spring contact at the end interface, and the other end is connected to the tripping circuit of the protection device. When the tripping circuit of the protection device issues a tripping signal, a DC voltage of 24V will be conducted between the positive and negative poles of the display diode, and the display diode will light up.

[0016] The beneficial technical effects of the present invention are as follows:

[0017] (1) The novel tripping circuit end connection device for nuclear power plants of the present invention has the functions of waterproof, dustproof and anti-electric leakage.

[0018] (2) The novel tripping circuit end connection device for nuclear power plants of the present invention has a simple structure, a small volume and is convenient for installation and use.

[0019] (3) The novel tripping circuit end connection device for nuclear power plants of the present invention makes the contact at the end interface firm through spring contact, reducing the situation of virtual connection at the end interface.

[0020] (4) The novel tripping circuit end connection device for nuclear power plants of the present invention makes contact through the way of iron sheets, with a large contact area, making the contact at the end interface firm and reducing the situation of virtual connection at the end interface.

[0021] (5) The novel tripping circuit end connection device for nuclear power plants of the present invention has the cover plate and the base buckled through the magnetic attraction plate and the magnetic attraction sub-mouth, making the contact between the cover plate and the base tight.

[0022] (6) Classify the protection types of the protection device, and perform different types of protection verification through different modules of the present device, shortening the protection verification time and improving the verification accuracy.

[0023] (7) The two levels at the end interface are connected through a diode, so as to display whether the two end interfaces are connected, and have the function of displaying the current direction. Description of the Drawings

[0024] Figure 1Front view of a relay protection tripping circuit termination device for a nuclear power plant provided by the present invention;

[0025] Figure 2 Rear view of a relay protection tripping circuit termination device for a nuclear power plant provided by the present invention;

[0026] In the figure: 1 - Magnetic attraction buckle boss; 2 - Cover plate; 3 - Magnetic attraction end interface; 4 - Hinge; 5 - End interface spring contact; 6 - Spring end termination base; 7 - Magnetic attraction plate groove; 8 - Opening and closing handle; 9 - Display diode; 10 - End connection wire. Specific embodiments

[0027] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments described in the present invention, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of protection of the present invention.

[0028] As Figure 1 and Figure 2 shown, a relay protection tripping circuit termination device for a nuclear power plant provided by the present invention includes a magnetic attraction buckle boss 1, a cover plate 2, a magnetic attraction end interface 3, a hinge 4, an end interface spring contact 5, a spring end termination base 6, a magnetic attraction plate groove 7, an opening and closing handle 8, a display diode 9, and an end connection wire 10.

[0029] The inner surface of the cover plate 2 is provided with a magnetic attraction end interface 3, and the middle of the magnetic attraction end interface 3 is connected through a display diode 9. The cover plate 2 is connected to the spring end termination base 6. The upper surface of the spring end termination base 6 is provided with an end interface spring contact 5, and the lower part of the end interface spring contact 5 is connected to the end connection wire 10.

[0030] The cover plate 2 and the spring end termination base 6 are connected through a hinge 4.

[0031] The cover plate 2 is made of insulating material, and the inner surface is provided with a magnetic attraction buckle boss 1. The magnetic attraction buckle boss 1 is made of magnet material and is magnetically attracted to the magnetic attraction groove 7 to make the cover plate 2 and the spring end termination base 6 closed and fastened.

[0032] The outer surface of the cover plate 2 is provided with an opening and closing handle 8. The opening and closing handle 8 is an insulating device, which is convenient for opening and closing the cover plate 2.

[0033] The outer surface of the cover plate 2 is provided with a display diode 9. The middle of the magnetic attraction end interface 3 is connected through the display diode 9; the display diode 9 is a light-emitting diode. When the end connection wire 10 receives a tripping signal sent from the protection device tripping circuit, a 24V DC voltage is sent to the positive and negative poles of 9, and the display diode 9 lights up.

[0034] The magnetic attraction end interface 3 is made of "I"-shaped conductive copper material and is connected in the middle by a display diode 9. When the magnetic attraction end interface 3 comes into contact with the end interface spring contact 5, a closed loop is formed with the tripping circuit.

[0035] The spring end connection base 6 is made of insulating material and is provided with a magnetic attraction groove 7. It is magnetically attracted to the magnetic attraction buckle boss 1 to make the cover plate 2 and the spring end connection base 6 closed and fastened.

[0036] On both sides of the upper surface of the spring end connection base 6, there are end interface spring contacts 5. The end interface spring contacts 5 are made of conductive copper material. When the end connection device is closed, it is elastically connected to the 3 magnetic attraction end interfaces through the springs above the end interface spring contacts 5 and is connected to the end connection wire 10 below.

[0037] The lower part of the end interface spring contact 5 is connected to the end connection wire 10. The end connection wire 10 transmits the electrical signal into the cover plate 2. If the cover plate 2 is closed, the electrical signal is transmitted to the display diode 9 through the end connection wire 10, and the display diode 9 lights up.

[0038] This end connection device is a visible break point to facilitate the operating personnel to judge whether the tripping circuit of the relay protection device can be connected to the tripping coil of the switch.

[0039] When this protection function is required for the tripping circuit, the cover plate 2 is closed through the handle 9. After the cover plate 2 is closed, it is closed and fastened to the spring end connection base 6. When the tripping signal is sent from the tripping circuit of the protection device to the end connection wire 10, a 24V DC voltage is sent to the positive and negative poles of the end connection wire 10, and a closed loop is formed through the end interface spring contact 5, the magnetic attraction end interface 3, and the light-emitting diode 9, and the light-emitting diode 9 lights up.

[0040] When this protection function is not required for the tripping circuit, the cover plate 2 is opened through the handle 9, and a closed loop cannot be formed.

[0041] A new type of tripping circuit end connection device for nuclear power plants of the present invention has the functions of waterproof, dustproof, and leakage prevention, with a simple structure, small volume, and is convenient for installation and use. This device can be widely applied to the protection system devices of nuclear power plant generators and transformers, can reduce working time and human error, and has good promotion and application prospects.

[0042] The present invention has been described in detail above in conjunction with the drawings and embodiments. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention. The content not described in detail in the present invention can all adopt the prior art.

Claims

1. A relay protection tripping circuit termination device for a nuclear power plant, characterized in that: The termination device includes a cover plate (2), a magnetic attraction terminal interface (3), a terminal interface spring contact (5), a spring termination base (6), a display diode (9) and a terminal wire (10); Among them, the inner surface of the cover plate (2) is provided with a magnetic attraction terminal interface (3), and the middle of the magnetic attraction terminal interface (3) is connected through a display diode (9). The cover plate (2) is connected to the spring termination base (6). The upper surface of the spring termination base (6) is provided with a terminal interface spring contact (5), and the lower part of the terminal interface spring contact (5) is connected to the terminal wire (10); The magnetic attraction terminal interface (3) is made of "I"-shaped conductive copper. The outer surface of the cover plate (2) is provided with a display diode (9), and the outer surface of the cover plate (2) is provided with an opening and closing handle (8) to facilitate the opening and closing of the cover plate (2); When the tripping circuit requires this protection function, the cover plate (2) is closed through the opening and closing handle (8); after the cover plate (2) is closed, it is tightly closed with the spring termination base (6); when the terminal wire (10) receives a tripping signal sent by the protection device tripping circuit, a 24V DC voltage is sent to the positive and negative poles of the terminal wire (10), and a closed circuit is formed through the terminal interface spring contact (5), the magnetic attraction terminal interface (3), and the display diode (9), and the display diode (9) lights up; when the tripping circuit does not require this protection function, the cover plate (2) is opened through the opening and closing handle (8), and a closed circuit cannot be formed.

2. A relay protection tripping circuit termination device for a nuclear power plant according to claim 1, characterized in that: The cover plate (2) and the spring termination base (6) are connected through a hinge (4).

3. A relay protection tripping circuit termination device for a nuclear power plant according to claim 2, characterized in that: The inner surface of the cover plate (2) is provided with a magnetic attraction buckle boss (1), and the magnetic attraction buckle boss (1) is made of magnet material.

4. A relay protection tripping circuit termination device for a nuclear power plant according to claim 3, characterized in that: The display diode (9) is a light-emitting diode.

5. A relay protection tripping circuit termination device for a nuclear power plant according to claim 4, characterized in that: A magnetic attraction groove (7) is opened on the upper surface of the spring termination base (6), and it is mutually attracted by magnetic force with the magnetic attraction buckle boss (1) to tightly close the cover plate (2) and the spring termination base (6).

6. A relay protection tripping circuit termination device for a nuclear power plant according to claim 5, characterized in that: There are two terminal interface spring contacts (5), and the terminal interface spring contacts (5) are made of conductive copper material.

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