A resistor device for high voltage circuit breaker

Abstract

The present invention discloses a resistor device for a high-voltage circuit breaker, comprising a conductive rod, a clamping plate is provided on the surface of the conductive rod, two clamping plates are fixed to the surface of the conductive rod by screws, a first resistor seat and a second resistor seat are provided on one side of the clamping plate, the first resistor seat and the second resistor seat are provided in the axial direction of the conductive rod, the first resistor seat and the second resistor seat are connected to the clamping plate by an insulating fixing seat, a mounting groove is provided on one side of the first resistor seat and the second resistor seat, a resistor is provided between the first resistor seat and the second resistor seat and in the mounting groove, and the resistor is electrically connected to the first resistor seat and the second resistor seat, and the present invention relates to the technical field of high-voltage electrical equipment. This resistor device for a high-voltage circuit breaker solves the problem of the resistor structure being too large in the existing high-voltage circuit breaker, reduces the overall volume, has no mounting holes in the contact part, optimizes the electric field, and improves the reliability of the product.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage electrical equipment, in particular to a resistor device for a high-voltage circuit breaker. Background Art

[0002] High-voltage circuit breakers play a controlling role in high-voltage circuits and are one of the important electrical components in high-voltage circuits. Circuit breakers are used to connect or disconnect circuits during normal operation. In the event of a fault, they quickly disconnect the circuit under the action of a relay protection device. In special circumstances (such as when automatically reclosing to a faulty line), they can reliably connect short-circuit currents. They have a fairly complete arc-extinguishing structure and sufficient current-breaking capacity. In order to limit the operating overvoltage during the closing operation of the high-voltage circuit breaker, existing high-voltage circuit breakers use circuit breakers with a resistor circuit connected in parallel with the main break. However, the structure of this type of resistor is very complex and large in size, which results in a large overall volume of the high-voltage circuit breaker, causing inconvenience during installation. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the present invention provides a resistor device for a high-voltage circuit breaker, which solves the problem of the resistor structure in the existing high-voltage circuit breaker being too large and reduces the overall volume.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a resistor device for a high-voltage circuit breaker, comprising a conductive rod, a clamping plate is arranged on the surface of the conductive rod, two clamping plates are arranged, and the two clamping plates are fixed to the surface of the conductive rod by screws, a first resistor seat and a second resistor seat are arranged on one side of the clamping plate, the first resistor seat and the second resistor seat are arranged in the axial direction of the conductive rod, and the first resistor seat and the second resistor seat are evenly distributed on the surface of the clamping plate along the circumference of the conductive rod, the first resistor seat and the second resistor seat are connected to the clamping plate through an insulating fixing seat, and the first resistor seat and the second resistor seat are connected to the clamping plate through an insulating fixing seat. A mounting groove is provided on one side, a resistor is provided between the first resistor seat and the second resistor seat and in the mounting groove, the resistor is electrically connected to the first resistor seat and the second resistor seat, except for a group of two adjacent first resistor seats, a connecting piece is electrically connected between other two adjacent first resistor seats, the resistors are connected in series by using the connecting piece, a first guide rod is electrically connected to one side of the first resistor seat corresponding to the first resistor in the series resistors, a first contact is provided at one end of the first guide rod, a second guide rod is electrically connected to one side of the second resistor seat corresponding to the last resistor in the series resistors, and a second contact is provided at one end of the second guide rod.

[0007] Preferably, the clamping plates are made of insulating material, and the diameter of the cylindrical cavity formed by combining two of the clamping plates is equal to the outer diameter of the conductive rod.

[0008] Preferably, two mounting grooves are provided on the first resistor seat and the second resistor seat.

[0009] Preferably, the first resistor seat includes a base, a mounting groove is provided on the surface of the base, a metal sheet is provided inside the base and at the bottom of the mounting groove, a connecting hole is provided on a side of the base away from the mounting groove, a connecting column is fixedly connected to one side of the metal sheet and located in the connecting hole, a limiting hole is provided on the inner wall of the mounting groove, a protrusion adapted to the limiting hole is provided on the surface of the resistor, one end of the resistor is electrically connected to the metal sheet, and when different resistors are selected to be connected in series, one end of the first guide rod is electrically connected to the corresponding connecting column.

[0010] Preferably, the two mounting grooves on the second resistor seat are electrically connected.

[0011] Preferably, the connecting piece comprises a connecting package piece, a connecting guide piece is arranged inside the connecting package piece, and connecting tubes are arranged on the surface of the connecting guide piece and at both ends of the connecting guide piece.

[0012] Preferably, the length of the resistor is equal to the distance between the mounting grooves on the first resistor seat and the second resistor seat, and both ends of the resistor are interference fit with the mounting grooves.

[0013] Preferably, the first guide rod comprises a rod body, and fixing holes are symmetrically arranged on the surface of the rod body.

[0014] Preferably, the first contact includes a hemisphere, one side of the hemisphere is fixedly connected to a connecting rod, a clamping rod that moves along the radial direction of the connecting rod is symmetrically arranged inside the connecting rod, a shielding cover is arranged on the side of the hemisphere close to the connecting rod, the rod body is a hollow rod, the connecting rod is interference fit with the inside of the rod body, and when the first contact is installed to one end of the first guide rod, the clamping rod rebounds into the fixing hole.

[0015] (III) Beneficial effects

[0016] The present invention provides a resistor device for a high-voltage circuit breaker. It has the following beneficial effects:

[0017] The resistor device for high-voltage circuit breakers sets the resistors around the conductive rod by means of a clamping piece, an insulating fixing seat and a resistor seat, thereby avoiding the problem of large volume caused by setting a resistor structure separately. At the same time, the resistors are connected in series by means of a series connection. At the same time, the resistors and the resistor seats are detachably arranged, so that different resistors can be connected in series according to needs. The first guide rod connecting column can also be placed at different positions to achieve resistance adjustment. At the same time, the clamping piece is fixed to the surface of the conductive rod, which is convenient for installation, replacement and maintenance. In the contact part, the contact and the guide rod are plugged in by interference fit to avoid loosening caused by contact collision during circuit breaker operation, thereby achieving reliable electrical contact. The contact part has no mounting holes, which optimizes the electric field and improves the reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the end surface structure of the conductive rod of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the first resistor seat of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the connecting piece of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the first guide rod and the first contact of the present invention.

[0024] In the figure: 1-conductive rod, 2-holding piece, 3-first resistor seat, 31-base, 32-metal sheet, 33-connecting column, 34-connecting hole, 35-limiting hole, 4-second resistor seat, 5-insulating fixing seat, 6-mounting groove, 7-resistance, 8-connecting piece, 81-connecting package piece, 82-connecting guide piece, 83-connecting cylinder, 9-first guide rod, 91-rod body, 92-fixing hole, 10-first contact, 101-hemispherical body, 102-connecting rod, 103-clamping rod, 104-shielding cover, 11-second guide rod, 12-second contact. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-6 The present invention provides a technical solution: a resistor device for a high-voltage circuit breaker, comprising a conductive rod 1, a clamping piece 2 is arranged on the surface of the conductive rod 1, two clamping pieces 2 are arranged, the two clamping pieces 2 are fixed to the surface of the conductive rod 1 by screws, the clamping pieces 2 are made of insulating material, the diameter of the cylindrical cavity formed by the combination of the two clamping pieces 2 is equal to the outer diameter of the conductive rod 1, ensuring that the two clamping pieces 2 can be fixed on the surface of the conductive rod 1 after being connected, a first resistor seat 3 and a second resistor seat 4 are arranged on one side of the clamping piece 2, the first resistor seat 3 and the second resistor seat 4 are arranged in the axial direction of the conductive rod 1, and ... The seat 3 and the second resistor seat 4 are evenly distributed on the surface of the clamping plate 2 along the circumference of the conductive rod 1. The first resistor seat 3 and the second resistor seat 4 are connected to the clamping plate 2 through an insulating fixing seat 5. A mounting groove 6 is provided on one side of the first resistor seat 3 and the second resistor seat 4. A resistor 7 is provided between the first resistor seat 3 and the second resistor seat 4 and in the mounting groove 6. The resistor 7 is electrically connected to the first resistor seat 3 and the second resistor seat 4. Except for a group of two adjacent first resistor seats 3, other two adjacent first resistor seats 3 are electrically connected with a connecting piece 8. The resistors 7 are connected in series by using the connecting piece 8 to increase the resistance.

[0027] A first guide rod 9 is electrically connected to one side of the first resistor seat 3 corresponding to the first resistor on the series resistor 7, and a first contact 10 is provided at one end of the first guide rod 9. A second guide rod 11 is electrically connected to one side of the second resistor seat 4 corresponding to the last resistor on the series resistor 7, and a second contact 12 is provided at one end of the second guide rod 11, and parallel connection with the conductive rod 1 is achieved through the contacts.

[0028] Two mounting grooves 6 are provided on the first resistor seat 3 and the second resistor seat 4, and the two mounting grooves 6 on the second resistor seat 4 are electrically connected. The first resistor seat 3 includes a base 31, and the mounting groove 6 is provided on the surface of the base 31. A metal sheet 32 ​​is provided in the base 31 and at the bottom of the mounting groove 6. A connecting hole 34 is provided on the side of the base 31 away from the mounting groove 6, and a connecting column 33 is fixedly connected to one side of the metal sheet 32 ​​and located in the connecting hole 34. A limiting hole 35 is provided on the inner wall of the mounting groove 6, and a convex point adapted to the limiting hole 35 is provided on the surface of the resistor 7. One end of the resistor 7 is electrically connected to the metal sheet 32. When different resistors are selected to be connected in series, one end of the first guide rod 9 is electrically connected to the corresponding connecting column 33. By increasing the number of mounting grooves 6, more resistors can be connected in series, and the resistance value can be increased to meet different usage requirements.

[0029] The connecting piece 8 includes a connecting package piece 81, a connecting guide piece 82 is arranged inside the connecting package piece 81, and connecting tubes 83 are arranged on the surface of the connecting guide piece 82 and at both ends of the connecting guide piece 82. After the connecting tube 83 is connected to the connecting column 33, electrical connection is achieved. The size of the connecting tube 83 is adapted to that of the connecting column 33 to ensure that the connecting piece 8 is firmly installed on the surface of the resistor seat.

[0030] The length of the resistor 7 is equal to the distance between the mounting grooves 6 on the first resistor seat 3 and the second resistor seat 4 , and the two ends of the resistor 7 are interference fit with the mounting grooves 6 , which ensures the stable installation of the resistor 7 .

[0031] The first guide rod 9 includes a rod body 91 , and fixing holes 92 are symmetrically arranged on the surface of the rod body 91 .

[0032] The first contact 10 includes a hemisphere 101, one side of the hemisphere 101 is fixedly connected to a connecting rod 102, a clamping rod 103 that moves along the radial direction of the connecting rod 102 is symmetrically arranged inside the connecting rod 102, a shielding cover 104 is arranged on the side of the hemisphere 101 close to the connecting rod 102, the rod body 91 is a hollow rod, the connecting rod 102 and the inside of the rod body 91 are interference fit, and when the first contact 10 is installed to one end of the first guide rod 9, the clamping rod 103 rebounds into the fixing hole 92, which ensures the stable installation of the contact and avoids the contact from loosening. The contact part has no installation hole, which optimizes the electric field and improves the reliability of the product.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A resistor device for a high voltage circuit breaker, comprising a conductive rod (1), characterized in that: The surface of the conductive rod (1) is provided with a clamping piece (2), two of the clamping pieces (2) are provided, and the two clamping pieces (2) are fixed to the surface of the conductive rod (1) by screws; one side of the clamping piece (2) is provided with a first resistor seat (3) and a second resistor seat (4); the first resistor seat (3) and the second resistor seat (4) are arranged in the axial direction of the conductive rod (1), and the first resistor seat (3) and the second resistor seat (4) are evenly distributed on the surface of the clamping piece (2) along the circumference of the conductive rod (1); the first resistor seat (3) and the second resistor seat (4) are connected to the clamping piece (2) via an insulating fixing seat (5); one side of the first resistor seat (3) and the second resistor seat (4) is provided with a mounting groove (6); the first resistor seat (3) and the second resistor seat (4) are connected to the clamping piece (2) by an insulating fixing seat (5); A resistor (7) is arranged between the resistor seats (4) and in the mounting groove (6); the resistor (7) is electrically connected to the first resistor seat (3) and the second resistor seat (4); except for a group of two adjacent first resistor seats (3), other two adjacent first resistor seats (3) are electrically connected with a connecting piece (8); the resistors (7) are connected in series by using the connecting piece (8); a first guide rod (9) is electrically connected to one side of the first resistor seat (3) corresponding to the first resistor in the series resistors (7); a first contact (10) is arranged at one end of the first guide rod (9); a second guide rod (11) is electrically connected to one side of the second resistor seat (4) corresponding to the last resistor in the series resistors (7); a second contact (12) is arranged at one end of the second guide rod (11).

2. A resistor device for a high voltage circuit breaker according to claim 1, characterized in that: The clamping piece (2) is made of insulating material, and the diameter of the cylindrical cavity formed by combining the two clamping pieces (2) is equal to the outer diameter of the conductive rod (1).

3. A resistor device for a high voltage circuit breaker according to claim 1, characterized in that: Two mounting grooves (6) are provided on the first resistor seat (3) and the second resistor seat (4).

4. A resistor device for a high voltage circuit breaker according to claim 3, characterized in that: The first resistor seat (3) comprises a base (31), a mounting groove (6) is arranged on the surface of the base (31), a metal sheet (32) is arranged in the base (31) and at the bottom of the mounting groove (6), a connecting hole (34) is arranged on the side of the base (31) away from the mounting groove (6), a connecting column (33) is fixedly connected to one side of the metal sheet (32) and located in the connecting hole (34), a limiting hole (35) is arranged on the inner wall of the mounting groove (6), a convex point matched with the limiting hole (35) is arranged on the surface of the resistor (7), one end of the resistor (7) is electrically connected to the metal sheet (32), and when different resistors are selected to be connected in series, one end of the first guide rod (9) is electrically connected to the corresponding connecting column (33).

5. A resistor device for a high voltage circuit breaker according to claim 4, characterized in that: The two mounting grooves (6) on the second resistor seat (4) are electrically connected.

6. A resistor device for a high voltage circuit breaker according to claim 1, characterized in that: The connecting piece (8) comprises a connecting wrapping piece (81), a connecting guide piece (82) is arranged inside the connecting wrapping piece (81), and connecting tubes (83) are arranged on the surface of the connecting guide piece (82) and at both ends of the connecting guide piece (82).

7. A resistor device for a high voltage circuit breaker according to claim 1, characterized in that: The length of the resistor (7) is equal to the distance between the mounting grooves (6) on the first resistor seat (3) and the second resistor seat (4), and both ends of the resistor (7) are interference-fitted with the mounting grooves (6).

8. A resistor device for a high voltage circuit breaker according to claim 1, characterized in that: The first guide rod (9) comprises a rod body (91), and fixing holes (92) are symmetrically arranged on the surface of the rod body (91).

9. A resistor device for a high voltage circuit breaker according to claim 8, characterized in that: The first contact (10) comprises a hemispherical body (101), one side of the hemispherical body (101) is fixedly connected to a connecting rod (102), a clamping rod (103) is symmetrically arranged inside the connecting rod (102) and moves along the radial direction of the connecting rod (102), a shielding cover (104) is arranged on the side of the hemispherical body (101) close to the connecting rod (102), the rod body (91) is a hollow rod, the connecting rod (102) is interference-fitted with the inside of the rod body (91), and when the first contact (100) is mounted on one end of the first guide rod (9), the clamping rod (103) rebounds into the fixing hole (92).

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