CN111381078A

CN111381078A - Voltage sampling device of molded case circuit breaker

Info

Publication number: CN111381078A
Application number: CN202010363745.XA
Authority: CN
Inventors: 张佳庆; 魏湘江
Original assignee: Daile Smart Grid Technology Nanjing Co ltd
Current assignee: Daile Smart Grid Technology Nanjing Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-07-07

Abstract

The invention discloses a voltage sampling device of a plastic-shell circuit breaker, which solves the problems that the voltage sampling device of the plastic-shell circuit breaker is directly welded with a sampling line on a main loop, the production of the mode is complicated, the reliability of the mode is insufficient through screw fastening, and sliding teeth are easy to generate, and comprises a voltmeter, wherein a fixed plate is fixed in the middle of the bottom end of the voltmeter, a first blade is installed at one side of the bottom end of the fixed plate, a second blade is connected at the other side of the bottom end of the fixed plate, a first wire is connected at one end of the middle part of the voltmeter, a first connecting head is fixed at one end of the first wire far away from the voltmeter, a first clamping plate is installed at one end of the first connecting head far away from the first wire, a first connecting plate is fixed at the bottom end of the first clamping plate, a first fixing hole is formed at the bottom of the first, the production cost is reduced, the reliability of the fastening mode is high, the sliding teeth are not easy to generate, and the later maintenance cost is reduced.

Description

Voltage sampling device of molded case circuit breaker

Technical Field

The invention belongs to the technical field of circuit breakers, and particularly relates to a voltage sampling device of a molded case circuit breaker.

Background

The circuit breaker is a switch device which can close, bear and break the current under the normal loop condition and can close, bear and break the current under the abnormal loop condition within the specified time, when the short circuit occurs, the magnetic field generated by the heavy current overcomes the counterforce spring, the release pulls the operation mechanism to act, the switch trips instantly, when the overload occurs, the current becomes larger, the heating value becomes stronger, the bimetallic strip deforms to a certain degree to push the mechanism to act, the larger the current is, the shorter the action time is, the electronic type is provided, the mutual inductor is used for collecting the magnitude of each phase of current, the current is compared with the set value, when the current is abnormal, the microprocessor sends out a signal to enable the electronic release to drive the operation mechanism to act, the higher requirement is provided for the intellectualization of the plastic shell circuit breaker, and the electronic type plastic shell circuit breaker has the functions of under-voltage over-protection, voltage, power and electric energy monitoring, in order to perform these voltage-dependent functions, the voltage must be sampled.

However, the current molded case circuit breaker voltage sampling device directly welds a sampling line on a main loop, and the production of the mode is complex.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the voltage sampling device for the molded case circuit breaker, which effectively solves the problems that the molded case circuit breaker voltage sampling device is complex in production, insufficient in reliability and easy to generate sliding teeth due to the fact that a sampling line is directly welded on a main loop through screw fastening.

In order to achieve the purpose, the invention provides the following technical scheme: a molded case circuit breaker voltage sampling device comprises a voltmeter, wherein a fixed plate is fixed in the middle of the bottom end of the voltmeter, a first blade is installed on one side of the bottom end of the fixed plate, a second blade is connected with the other side of the bottom end of the fixed plate, a first electric wire is connected with one end of the middle of the voltmeter, a first connector is fixed at one end of the first electric wire, which is far away from the voltmeter, a first clamp plate is installed at one end of the first connector, which is far away from the first electric wire, a first connecting plate is fixed at the bottom end of the first clamp plate, a first fixing hole is formed in the bottom of the first connecting plate, a fixed plate is fixed at the inner side of the first fixing hole, a spring is connected with one end of the fixed plate, a fixed column is installed at one end of the spring, which is far away from the fixed plate, a cylinder is fixed at one end of, the end, far away from the second electric wire, of the second connector is provided with a third clamping plate, the bottom end of the third clamping plate is fixedly provided with a third connecting plate, the bottom of the third connecting plate is connected with a fourth connecting plate, and the bottom end of the fourth connecting plate is fixedly provided with a fourth clamping plate.

Preferably, the voltmeter is a voltmeter with recording voltage data.

Preferably, the fixing plate is a rigid plastic member.

Preferably, lubricating oil is smeared on the outer sides of the fixed column and the cylinder.

Preferably, rubber insulation sleeves are installed on the outer sides of the first clamping plate, the second clamping plate, the third clamping plate and the fourth clamping plate.

Compared with the prior art, the invention has the beneficial effects that:

the invention has compact structure, simple production, convenient manufacture, low production cost, high reliability of fastening mode, difficult generation of sliding teeth and low later maintenance cost.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic view of a first blade mounting arrangement of the present invention;

fig. 3 is an exploded view of the spring attachment of the present invention.

In the figure: 1. a voltmeter; 2. a fixing plate; 3. a first blade; 4. a second blade; 5. a first electric wire; 6. a first connector; 7. a first splint; 8. a first connecting plate; 9. a second connecting plate; 10. a second splint; 11. a second electric wire; 12. a second connector; 13. a third splint; 14. a third connecting plate; 15. a fourth connecting plate; 16. a fourth splint; 17. a first fixing hole; 18. a fixing plate; 19. a spring; 20. fixing a column; 21. a cylinder; 22. and a second fixing hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the first embodiment, as shown in fig. 1, 2 and 3, the invention includes a voltmeter 1, a fixed plate 2 is fixed in the middle of the bottom end of the voltmeter 1, a first blade 3 is installed on one side of the bottom end of the fixed plate 2, a second blade 4 is connected on the other side of the bottom end of the fixed plate 2, a first wire 5 is connected at one end of the middle of the voltmeter 1, a first connector 6 is fixed at one end of the first wire 5 away from the voltmeter 1, a first clamp 7 is installed at one end of the first connector 6 away from the first wire 5, a first connecting plate 8 is fixed at the bottom end of the first clamp 7, a first fixing hole 17 is formed at the bottom of the first connecting plate 8, a fixed plate 18 is fixed on the inner side of the first fixing hole 17, a spring 19 is connected at one end of the fixed plate 18, a fixed column 20 is installed at one end of the spring 19 away from the fixed plate, second fixed orifices 22 have been seted up at second connecting plate 9 top, voltmeter 1 middle part other end is fixed with second electric wire 11, and the one end that voltmeter 1 was kept away from to second electric wire 11 is connected with second connector 12, and second connector 12 is kept away from second electric wire 11 one end and is installed third splint 13, and third splint 13 bottom mounting has third connecting plate 14, and third connecting plate 14 bottom is connected with fourth connecting plate 15, and fourth connecting plate 15 bottom mounting has fourth splint 16.

In the second embodiment, based on the first embodiment, as shown in fig. 1, fig. 2 and fig. 3, the voltmeter 1 is a voltmeter having recording voltage data, and can record the voltage data.

In the third embodiment, based on the first embodiment, as shown in fig. 1, 2 and 3, the fixing plate 2 is a hard plastic member, which can prevent electrical conduction and ensure sufficient hardness.

In the fourth embodiment, on the basis of the first embodiment, as shown in fig. 1, 2 and 3, lubricating oil is applied to the outer sides of the fixed column 20 and the cylinder 21, so that the friction force on the outer sides of the fixed column 20 and the cylinder 21 is reduced.

In the fifth embodiment, based on the first embodiment, as shown in fig. 1, 2 and 3, rubber insulating sleeves are mounted on the outer sides of the first clamping plate 7, the second clamping plate 10, the third clamping plate 13 and the fourth clamping plate 16, so that electric shock can be prevented.

The working principle is as follows: when the voltage sampling device of the molded case circuit breaker is used, the fixing plate 2 is placed on the outer side of an electric wire, the fixing plate 2 is pressed forcefully to enable the first blade 3 and the second blade 4 to enter an insulating skin of the electric wire, the fixing plate 2 is rotated for one circle to cut the insulating skin of the electric wire, the cylinder 21 is pressed forcefully to compress the spring 19, the fixing column 20 can be pulled out from the second fixing hole 22, the relative position of the first clamping plate 7 and the second clamping plate 10 is adjusted by fingers, the electric wire with the insulating skin removed can be clamped tightly by the first clamping plate 7 and the second clamping plate 10, the cylinder 21 is withdrawn, the fixing column 20 is re-entered into the second fixing hole 22 by the spring 19 through elasticity, so that the relative position of the first clamping plate 7 and the second clamping plate 10 can be fixed, the position adjustment of the third clamping plate 13 and the fourth clamping plate 16 is the same as the position adjustment of the first clamping plate 7 and the second clamping plate 10, voltmeter 1 can measure and record voltage values.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a moulded case circuit breaker voltage sampling device, includes voltmeter (1), its characterized in that: the device is characterized in that a fixing plate (2) is fixed in the middle of the bottom end of a voltmeter (1), a first blade (3) is installed on one side of the bottom end of the fixing plate (2), a second blade (4) is connected to the other side of the bottom end of the fixing plate (2), a first wire (5) is connected to one end of the middle of the voltmeter (1), a first connecting head (6) is fixed to one end, away from the voltmeter (1), of the first wire (6), a first clamping plate (7) is installed to one end, away from the first wire (5), of the first connecting head (6), a first connecting plate (8) is fixed to the bottom end of the first clamping plate (7), a first fixing hole (17) is formed in the bottom of the first connecting plate (8), a fixing plate (18) is fixed to the inner side of the first fixing hole (17), one end, away from the fixing plate (18), of the fixing plate (18) is connected with a spring (19, second connecting plate (9) have been cup jointed in fixed column (20) outside, second fixed orifices (22) have been seted up at second connecting plate (9) top, voltmeter (1) middle part other end is fixed with second electric wire (11), voltmeter (1) one end is kept away from in second electric wire (11) is connected with second connector (12), second electric wire (11) one end is kept away from in second connector (12) is installed third splint (13), third splint (13) bottom mounting has third connecting plate (14), third connecting plate (14) bottom is connected with fourth connecting plate (15), fourth connecting plate (15) bottom mounting has fourth splint (16).

2. The molded case circuit breaker voltage sampling apparatus of claim 1, wherein: the voltmeter (1) is a voltmeter with recorded voltage data.

3. The molded case circuit breaker voltage sampling apparatus of claim 1, wherein: the fixing plate (2) is a hard plastic component.

4. The molded case circuit breaker voltage sampling apparatus of claim 1, wherein: lubricating oil is smeared on the outer sides of the fixed column (20) and the cylinder (21).

5. The molded case circuit breaker voltage sampling apparatus of claim 1, wherein: rubber insulation sleeves are mounted on the outer sides of the first clamping plate (7), the second clamping plate (10), the third clamping plate (13) and the fourth clamping plate (16).