High-voltage power supply connection switching device

Abstract

The utility model discloses a high-voltage power supply connection switching device which comprises a box body, a connecting shaft is rotatably connected in the box body, an insulating plate is fixedly connected on the connecting shaft, a conducting strip is fixedly connected on the insulating plate, a first brake pad is fixedly connected on the conducting strip, a second brake pad is arranged on one side of the first brake pad, and the second brake pad is arranged on the other side of the first brake pad. A third brake pad is arranged on the other side of the first brake pad; according to the utility model, through rotating the conducting strip and switching the positions of the three brake pads on the conducting strip, switching among four circuits is realized, different application requirements can be met, and compared with the existing high-voltage power supply leading box, the high-voltage power supply leading box has more powerful functions and higher practicability; according to the contact piece assembly, the elastic force of the contact piece is utilized to be attached to the brake piece, the elastic piece providing additional elastic force is further designed, meanwhile, the supporting piece is further designed on the elastic piece to ensure that the elastic piece cannot deform excessively, and therefore the good contact effect of the contact piece assembly can be guaranteed, and looseness is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage power supply connection boxes, in particular to a high-voltage power supply connection switching device. Background Art

[0002] Electrostatic precipitator technology uses a high-voltage electric field to charge dust and deposit the charged dust on the anode. The high-voltage power supply connection box is one of the important equipment in electrostatic precipitator technology. It is used to realize the switching and connection of power supply. The existing high-voltage power supply connection box can only realize the function of introducing high-voltage direct current into the electric field, and the safety isolation function is not comprehensive enough. When the internal maintenance of the electrostatic precipitator electric field is carried out, the electric field and the high-voltage power supply cannot be grounded at the same time; when there is a fault inside the electric field and the power supply system needs to be boosted separately without load, it is not convenient to isolate the electric field, and the internal grounding of the electric field cannot be guaranteed at this time; when confirming whether the high-voltage power supply system has a fault and a ground short-circuit test is required, the high-voltage direct current system needs to be short-circuited to the ground terminal through a wire before the test can be carried out; and the switch contact piece of the existing high-voltage power supply connection box is easy to loosen after a long period of use, which can easily lead to poor contact. Therefore, the existing high-voltage power supply connection box has the problems of single function, poor safety and reliability, and when conducting relevant tests on the power supply system, other leads need to be connected externally, which has the defects of cumbersome operation and inconvenient use. Utility Model Content

[0003] The purpose of the utility model is to provide a high-voltage power supply connection switching device to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-voltage power supply connection and switching device, comprising a box body, an electric field connector is fixedly connected to the box body, a high-voltage connector is arranged on one side of the electric field connector, and a grounding connector is arranged on the other side of the electric field connector, and contact assemblies are electrically connected to the high-voltage connector, the electric field connector and the grounding connector, and the contact assemblies are fixedly connected to the box body, a connecting shaft is rotatably connected to the box body, an insulating plate is fixedly connected to the connecting shaft, a conductive plate is fixedly connected to the insulating plate, a first gate piece is fixedly connected to the conductive plate, a second gate piece is arranged on one side of the first gate piece, and a third gate piece is arranged on the other side of the first gate piece, and the first gate piece, the second gate piece and the third gate piece are respectively plugged into the three contact assemblies.

[0005] Preferably, the angle between the first gate piece and the second gate piece is ninety degrees, and the angle between the first gate piece and the third gate piece is ninety degrees.

[0006] Preferably, a controller is fixedly connected to the box, the controller is electrically connected to a motor, and the motor is fixedly connected to the box, and an output end of the motor is fixedly connected to the connecting shaft.

[0007] Preferably, the contact assembly includes a fixed block, a metal seat, a contact body, a contact piece, a guide piece, a spring, a support piece and a screw, and the fixed block is fixedly connected in the box, the metal seat is fixedly connected to the fixed block, two contact bodies are arranged on one side of the metal seat, one end of the contact body is fixedly connected to the contact piece, and the other end is fixedly connected to the spring, and the spring is arranged on one side of the contact piece.

[0008] Preferably, guide plates are fixedly connected to both side outer walls of the contact plate.

[0009] Preferably, a support sheet is fixedly connected to an outer wall of one side of the spring sheet, a screw is installed on the support sheet, and one end of the screw passes through the metal seat and is threadedly connected to the fixing block.

[0010] The utility model provides a high-voltage power supply connection switching device, which has the advantages that: the utility model realizes switching between four circuits by rotating the conductive sheet and switching the positions of the three gate pieces thereon, which can meet different application requirements. Compared with the existing high-voltage power supply connection box, the function is more powerful and more practical; in addition to utilizing the elastic force of the contact sheet itself to fit with the gate sheet, the contact sheet assembly of the utility model is also designed with a spring sheet that provides additional elastic force, and a supporting sheet is also designed on the spring sheet to ensure that the spring sheet will not be excessively deformed, so that the contact sheet assembly can ensure a good contact effect and avoid loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the contact assembly of the utility model;

[0014] Figure 3 for Figure 2 A magnified view of the structure in the middle A area;

[0015] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the utility model from another angle.

[0016] In the figure: 1. box body; 11. controller; 12. high voltage connector; 13. electric field connector; 14. ground connector; 15. motor; 16. connecting shaft; 17. insulating plate; 18. conductive sheet; 19. first gate piece; 110. second gate piece; 111. third gate piece; 2. contact piece assembly; 21. fixing block; 22. metal seat; 23. contact piece body; 24. contact piece; 25. guide piece; 26. spring piece; 27. support piece; 28. screw. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model provides an embodiment: a high-voltage power supply connection switching device, including a box body 1, an electric field connector 13 is fixedly connected to the box body 1, a high-voltage connector 12 is arranged on one side of the electric field connector 13, and a grounding connector 14 is arranged on the other side of the electric field connector 13. The high-voltage connector 12, the electric field connector 13 and the grounding connector 14 are all electrically connected with a contact assembly 2, and the contact assembly 2 is fixedly connected to the box body 1, and a connecting shaft 16 is rotatably connected in the box body 1, and an insulating plate 17 is fixedly connected to the connecting shaft 16, and a conductive sheet 18 is fixedly connected to the insulating plate 17, and a first gate piece 19 is fixedly connected to the conductive sheet 18, and a second gate piece 110 is arranged on one side of the first gate piece 19, and the first gate piece 19 is connected to the second gate piece 110. A third gate piece 111 is provided on the other side of the plate 19, and the first gate piece 19, the second gate piece 110 and the third gate piece 111 are respectively plugged into the three contact pieces 2, the high-voltage connector 12 is used to connect the high-voltage power supply, the electric field connector 13 is used to connect the electric field of the electrostatic precipitator, the grounding connector 14 is used to connect the ground wire, the connecting shaft 16 is used to drive the insulating plate 17, the insulating plate 17 is used to install the conductive sheet 18, the conductive sheet 18 is connected to the contact piece assembly 2 through the three gate pieces, so that the connector electrically connected to the contact piece assembly 2 is connected; the angle between the first gate piece 19 and the second gate piece 110 is ninety degrees, and the angle between the first gate piece 19 and the third gate piece 111 is ninety degrees; the box body 1 is fixedly connected with a controller 11 , the controller 11 is electrically connected to the motor 15, and the motor 15 is fixedly connected to the box body 1, the output end of the motor 15 is fixedly connected to the connecting shaft 16, the controller 11 is used to control the motor 15 to rotate a corresponding angle, and the motor 15 is used to drive the motor 15; the contact assembly 2 includes a fixed block 21, a metal seat 22, a contact body 23, a contact piece 24, a guide piece 25, a spring 26, a support piece 27 and a screw 28, and the fixed block 21 is fixedly connected to the box body 1, the fixed block 21 is fixedly connected to the metal seat 22, and two contact bodies 23 are arranged on one side of the metal seat 22, one end of the contact body 23 is fixedly connected to the contact piece 24, and the other end is fixedly connected to the spring 26, and the spring 26 is arranged on one side of the contact piece 24, the contact piece assembly 2 uses the fixing block 21 to install the metal seat 22, the contact piece body 23 is used to contact and conduct with the gate piece, and the spring piece 26 is used to provide a reset elastic force for the contact piece body 23; the outer walls on both sides of the contact piece 24 are fixedly connected with guide pieces 25, and the guide piece 25 is used to guide the gate piece; a support piece 27 is fixedly connected to the outer wall of one side of the spring piece 26, and a screw 28 is installed on the support piece 27, and one end of the screw 28 passes through the metal seat 22 and is threadedly connected to the fixing block 21. The support piece 27 is used to prevent the spring piece 26 from excessive deformation, and is also used to cooperate with the metal seat 22 to clamp and fix the wire. The metal seat 22 and the support piece 27 are fixed by screws 28.

[0019] Working principle: When using the utility model, the high-voltage connector 12 is connected to the high-voltage power supply, the electric field connector 13 is connected to the electric field of the electrostatic precipitator, and the grounding connector 14 is connected to the ground wire. The controller 11 on the box body 1 controls the motor 15 to make corresponding actions, that is, after pressing the button to start the motor 15, the motor 15 drives the insulating plate 17 through the connecting shaft 16, and the conductive sheet 18 on the insulating plate 17 rotates accordingly. The conductive sheet 18 passes through the first gate piece 19, the second gate piece 110 and the third gate piece 111. An electrical connection is established between the contact piece assembly 2, so that the high-voltage connector 12, the electric field connector 13 and the grounding connector 14 are also connected with corresponding wires; when the first gate piece 19 and the second gate piece 110 are both connected to the contact piece assembly 2, and the third gate piece 111 is suspended, the electric precipitator electric field is energized to work; when the first gate piece 19, the second gate piece 110 and the third gate piece 111 are all connected to the contact piece assembly 2, the high-voltage power supply and the electric precipitator electric field are grounded at the same time, so as to ensure the safety of the maintenance personnel; when the first gate piece 19 and the third gate piece 111 are both connected to the contact piece assembly 2, the high-voltage power supply and the electric precipitator electric field are grounded at the same time, so as to ensure the safety of the maintenance personnel; The three gate pieces 111 are all connected to the contact piece assembly 2, and when the second gate piece 110 is suspended, the electric field of the electrostatic precipitator is grounded, and the high-voltage power supply side is suspended, which is convenient for performing a no-load boost test on the high-voltage power supply system; when the second gate piece 110 and the third gate piece 111 are all connected to the contact piece assembly 2, and the first gate piece 19 is suspended, the electric field side of the electrostatic precipitator is suspended, and the high-voltage power supply side is grounded, which is convenient for performing a short-circuit grounding test on the high-voltage power supply system; wherein the contact piece body 23, the contact piece 24, the guide piece 25, the spring piece 26 and the support piece 2 7 is an integrated structure, the fixing block 21 is used to install the metal seat 22, the metal seat 22 cooperates with the support sheet 27 to clamp and fix the wire, the contact piece 24 on the contact piece body 23 is used to contact the gate piece, the guide piece 25 is used to guide the gate piece, the spring piece 26 is used to provide additional reset elastic force for the contact piece 24, the support sheet 27 is used to prevent the spring piece 26 from excessive deformation, the screw 28 is used to fix the support sheet 27 and the metal seat 22 on the fixing block 21, and the motor 15 can be replaced by a hand wheel to switch the circuit manually.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A high voltage power supply connection switching device, comprising a box (1), characterized in that: The box body (1) is fixedly connected to an electric field connector (13), a high voltage connector (12) is provided on one side of the electric field connector (13), and a ground connector (14) is provided on the other side of the electric field connector (13), and the high voltage connector (12), the electric field connector (13) and the ground connector (14) are all electrically connected to a contact assembly (2), and the contact assembly (2) is fixedly connected to the box body (1), and a connecting shaft (16) is rotatably connected to the box body (1), and the connecting shaft ( 16), an insulating plate (17) is fixedly connected to the insulating plate (17), a conductive plate (18) is fixedly connected to the conductive plate (18), a first gate piece (19) is fixedly connected to the conductive plate (18), a second gate piece (110) is arranged on one side of the first gate piece (19), a third gate piece (111) is arranged on the other side of the first gate piece (19), and the first gate piece (19), the second gate piece (110) and the third gate piece (111) are respectively plugged into the three contact piece assemblies (2).

2. A high voltage power supply connection switching device according to claim 1, characterized in that: The included angle between the first gate piece (19) and the second gate piece (110) is ninety degrees, and the included angle between the first gate piece (19) and the third gate piece (111) is ninety degrees.

3. A high voltage power supply connection switching device according to claim 1, characterized in that: The box body (1) is fixedly connected to a controller (11), the controller (11) is electrically connected to a motor (15), and the motor (15) is fixedly connected to the box body (1), and the output end of the motor (15) is fixedly connected to a connecting shaft (16).

4. A high voltage power supply connection switching device according to claim 1, characterized in that: The contact piece assembly (2) comprises a fixing block (21), a metal seat (22), a contact piece body (23), a contact piece (24), a guide piece (25), a spring piece (26), a support piece (27) and a screw (28), wherein the fixing block (21) is fixedly connected to the box body (1), the metal seat (22) is fixedly connected to the fixing block (21), two contact piece bodies (23) are arranged on one side of the metal seat (22), one end of the contact piece body (23) is fixedly connected to the contact piece (24), and the other end is fixedly connected to the spring piece (26), and the spring piece (26) is arranged on one side of the contact piece (24).

5. A high voltage power supply connection switching device according to claim 4, characterized in that: Guide plates (25) are fixedly connected to the outer walls on both sides of the contact plate (24).

6. A high voltage power supply connection switching device according to claim 4, characterized in that: A support sheet (27) is fixedly connected to an outer wall of one side of the spring sheet (26), a screw (28) is installed on the support sheet (27), and one end of the screw (28) passes through the metal seat (22) and is threadedly connected to the fixing block (21).

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