A switching capacitor contactor and a method of using the same

Abstract

The present invention relates to the technical field of contactors, in particular to a switching capacitor contactor and a method for using the same, comprising a main contactor and a resistor fixedly connected to the top surface of the main contactor, wherein the resistor comprises an outer protection mechanism, comprising an outer protection box, electric connection plates symmetrically arranged on both sides of the outer protection box, and a controller fixedly arranged on the top surface of the outer protection box; a variable resistance mechanism arranged inside the outer protection box, comprising three variable resistance disks coaxially arranged in a horizontal array and linkage disks symmetrically arranged at both ends of the three variable resistance disks, wherein an I-shaped groove is provided at the center of the variable resistance disk; and an adjustment mechanism, comprising a driving sleeve coaxially fixedly arranged on the end surface of one of the linkage disks, a matching box arranged above the driving sleeve, and a movable plate arranged inside the matching box. The switching capacitor contactor can adjust the suitability of the resistor for processing the surge according to the transformation of the surge, thereby improving the service life of the contactor, and the contactor has good heat dissipation effect and good practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of contactors, and in particular to a switched capacitor contactor and a method of using the same. Background Art

[0002] The switching capacitor contactor is a special contactor used for switching low-voltage parallel capacitors. It is widely used in powerless compensation equipment for automatic compensation. The biggest feature of the switching capacitor contactor is that it is provided with a resistor. Before the main contact conducts electricity, the current will first be conducted through the resistor to avoid the damage to the capacitor caused by the surge generated when the power is turned on. For example, the existing public document CN203205347U-Switching capacitor contactor discloses a switching capacitor contactor as described above;

[0003] Although the existing switched capacitor contactor can play a good protective role for itself and the equipment when in use, the existing switched capacitor contactor still has certain shortcomings in actual use: first, with the increase of use time and the fluctuation of the power grid itself, the current passing through the contactor still has a big problem in adjusting the surge by means of fixed resistance, and such a situation will still cause damage to the capacitor in actual use, thereby reducing the service life of the switched capacitor contactor; secondly, when the resistor faces a surge, a large amount of heat will be generated on the resistor, and the heat cannot be dissipated in time, which will cause certain damage to the resistor itself, and even there will be certain safety hazards;

[0004] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the problem that the above-mentioned existing switched capacitor contactor may still cause damage to the main contactor as the service time increases and the power grid itself fluctuates, a switched capacitor contactor is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a switching capacitor contactor, comprising a main contactor and a resistor fixedly connected to the top surface of the main contactor, the resistor comprising an outer protection mechanism, comprising an outer protection box, electric connection plates symmetrically arranged on both sides of the outer protection box and a controller fixed on the top surface of the outer protection box; a variable resistance mechanism arranged inside the outer protection box, comprising three variable resistance disks arranged in a coaxial array in a horizontal direction and linkage disks symmetrically arranged at both ends of the three variable resistance disks, an I-shaped groove is opened at the center position of the variable resistance disk, and the I-shaped groove is arranged ... An I-shaped insulating sleeve is fixedly sleeved in the shaped groove, an even number of convex grooves are arranged on the varistor disk along the circumferential array and penetrated at both ends, a second insulating column is sleeved at one end of the convex groove close to the I-shaped insulating sleeve, and a first insulating column is sleeved at the other end of the convex groove, a first conductive column is fixedly sleeved in the first insulating column, a second gasket is fixedly arranged at one end of the first conductive column, and a conductive protrusion is fixedly arranged at the other end of the first conductive column, a second conductive column is fixedly sleeved in the second insulating column, and a second conductive column is fixedly connected at one end of the second conductive column close to the I-shaped groove The invention relates to an electric sheet, wherein two adjacent second conductive sheets are attached to one side of the same first conductive sheet, a resistor column, a first spring and a first gasket are sequentially arranged inside the convex groove along the radial direction, one end of the resistor column is in contact with the second gasket, and the first gasket is in contact with one end of the second conductive column, and a through hole for the second insulating column to slide through is provided on the side wall of the I-shaped insulating sleeve; the resistance values ​​of the resistor columns in the multiple convex grooves less than 180° are different, and the resistance values ​​of the resistor columns in the two convex grooves in the same radial direction are equal; a plurality of first mounting holes are provided on the end surface of the variable resistance disk along a circumferential array, and a second mounting hole is provided on the end surface of the linkage disk in alignment with the first mounting hole, and the coaxial plurality of first mounting holes and the plurality of second mounting holes are fixed by the same bolt rod; and an adjusting mechanism, comprising a driving sleeve coaxially fixed on the end surface of one of the linkage disks, a matching box arranged above the driving sleeve and a movable plate arranged inside the matching box, a ring tooth is fixed on the outer side wall of the free end of the driving sleeve, and a bar tooth meshing with the ring tooth is fixed on the bottom surface of the movable plate.

[0008] The beneficial effects of the present invention are as follows: when the switching capacitor contactor is in use, the driving sleeve can be rotated by moving the bar teeth in the lateral direction and the meshing setting between the bar teeth and the ring teeth, thereby realizing the synchronous rotation of the three variable resistor disks. By setting the different resistance values ​​of the resistor columns in the convex grooves and the same resistance values ​​of the resistor columns in the same radial direction, during the rotation of the variable resistor disk, the resistance used for electrical conduction will also be adjusted accordingly, thereby realizing the adjustment of the resistance value in the circuit according to the change of the surge, so as to keep the current passing through the main contactor always within the corresponding threshold range, thereby playing a good protective role on the capacitor and improving its service life.

[0009] As a preferred solution of a switching capacitor contactor of the present invention, first installation grooves are symmetrically opened on both side surfaces of the outer protection box, and an electric connection plate is fixedly connected in the first installation groove, three electric connection blocks are fixedly arranged in an array in the horizontal direction on the electric connection plate, and the three electric connection blocks are arranged in a one-to-one correspondence with the three variable resistor disks, a conductive plate is inserted into the outer wall of the electric connection block, one end of the conductive plate located on the inner side of the outer protection box is integrally formed with an elastic metal sheet for fitting with the conductive protrusion, and one end of the conductive plate located on the outer side of the outer protection box is spirally connected with a conductive bolt.

[0010] As a preferred solution of a switching capacitor contactor of the present invention, a limiting ring groove is provided on the side wall of the linkage disk in the circumferential direction, a limiting plate is gap-matched at the outer position of the lower end of the limiting ring groove, and the limiting plate is fixedly connected to the inner wall of the outer protective box, and an oil groove is provided on one side surface of the limiting plate that is in contact with the limiting ring groove in the arc direction.

[0011] As a preferred solution of a switching capacitor contactor of the present invention, at least one of a temperature sensor, an infrared detection sensor and a current detection sensor is arranged at the main contact position of the main contactor, and the above-mentioned sensor is electrically connected to the controller through a conductive line; the conductive bolts on the two symmetrical electrical connection blocks are respectively connected to the two ends of the main contact of one phase through conductive lines to realize that the variable resistor disk and the main contact are connected in parallel.

[0012] As a preferred solution of a switching capacitor contactor of the present invention, the I-shaped insulating sleeve is coaxially composed of a first T-shaped sleeve and a second T-shaped sleeve, a third external thread is provided on the outer wall of one end of the first T-shaped sleeve, and a third internal thread spirally matched with the third external thread is provided on the inner wall of one end of the second T-shaped sleeve; a plurality of plug-in columns are fixedly arranged in a circumferential array on the upper side of one side of the extended portion of the first T-shaped sleeve, and a plug-in hole for sliding and inserting the plug-in column is provided on the variable resistance disk at one end of the I-shaped groove, and a plurality of third disassembly and assembly holes are provided in a circumferential array on the upper side of the extended portion of the second T-shaped sleeve.

[0013] As a preferred solution of a switching capacitor contactor of the present invention, wherein: a first external thread is provided on the outer wall of the first insulating column, and a first internal thread spirally matched with the first external thread is provided on the inner part of one end of the convex groove, and a first disassembly hole is eccentrically provided on one end surface of the first insulating column; a second external thread is provided on the outer wall of the second insulating column, and a second internal thread spirally matched with the second external thread is provided on the inner wall of one end of the convex groove, and a second disassembly hole is eccentrically provided on one end surface of the second insulating column.

[0014] As a preferred solution of a switching capacitor contactor of the present invention, a limiting column is fixedly provided in the middle of one side surface of the first conductive sheet, and a limiting head is fixedly provided on the other end of the limiting column, and a limiting hole for gap matching of the limiting head is provided on the inner side wall of the I-shaped insulating sleeve; a groove for abutting one end of the second conductive column is provided on one side surface of the first gasket.

[0015] In view of the fact that the existing switching capacitor contactor will generate a large amount of heat in the process of processing surges, which will cause damage to the contactor itself, a switching capacitor contactor of the present invention is further optimized and improved, wherein: a heat dissipation rod is arranged at the inner center position of the I-shaped insulating sleeve along the axial direction, and both ends of the heat dissipation rod are slidably sleeved with limit sleeves, and the two limit sleeves are fixedly connected to the inner walls of the two linkage disks through connecting strips respectively, and a plurality of heat dissipation fins are fixedly arranged on the side wall of the heat dissipation rod located on the inner side of the variable resistor disk along a circumferential array; second installation grooves are coaxially provided on the two end surfaces of the outer protective box with the heat dissipation rod, and a dustproof disk is fixedly installed in the second installation groove.

[0016] Another beneficial effect of the present invention is that when the switching capacitor contactor is in use, the contact area between the variable resistor disk and the air can be increased by setting the I-shaped groove at the center position of the variable resistor disk. In combination with the setting of the heat sink on the heat dissipation rod, effective heat conduction can be performed to achieve rapid discharge of heat generated in the process of the variable resistor disk processing surges, avoid excessive residual heat inside the variable resistor disk from affecting the variable resistor disk, and increase the service life of the variable resistor disk.

[0017] As a preferred solution of a switching capacitor contactor of the present invention, a connecting ear is fixedly provided on one side of the top surface of the movable plate, and a connecting block is fixedly provided on the other side of the top surface of the movable plate, a first I-shaped rod is slidably sleeved on the connecting ear along the horizontal direction, and one end of the first I-shaped rod is attached to the inner wall of one side of the matching box, and a second spring is slidably sleeved on the first I-shaped rod between the matching box and the connecting ear; a telescopic groove for sliding sleeve of one end of the second I-shaped rod is opened in the vertical direction on the top surface of the connecting block, and a third spring is arranged in the telescopic groove below the second I-shaped rod, and a first I-shaped rod is slidably sleeved on the inner wall of the matching box along the horizontal direction on the inner top surface of the matching box. A sliding groove is opened for the clearance fit of the upper end of the second I-shaped rod; a first electromagnetic column is fixedly sleeved on the side wall of the matching box below the first I-shaped rod, and a second electromagnetic column is fixedly sleeved on the top surface of the matching box between the first electromagnetic column and the movable plate; a rectangular plate is fixedly provided on the inner wall of the matching box on one side of the movable plate, and the rectangular plate is arranged on the side close to the first electromagnetic column, and a guide plate that fits the side of the rectangular plate is fixedly provided on the side of the movable plate close to the rectangular plate, and the guide plate is arranged on the side close to the first electromagnetic column; a fixed plate is fixedly provided on the top surface of the matching box, and the fixed plate is fixedly connected to the inner top surface of the outer protective box.

[0018] In addition, the present invention also provides the following technical solution: a method for using a switching capacitor contactor, wherein the switching capacitor contactor is installed and used in the following steps;

[0019] S1: When the power is on, the sensor will detect the data of the main contact position. When the detected data is within the threshold, the resistor will not act. The resistance column in the resistor will share the surge when the power is on to protect the capacitor.

[0020] S2: When the detected value is outside the threshold, the controller controls the first electromagnetic column to energize to adsorb the movable plate, and the bar teeth on the movable plate drive the ring teeth to rotate, and then under the fixation of the screw rod, the synchronous rotation of multiple variable resistance disks is realized;

[0021] S3: By rotating the variable resistance disk, the resistance value of the resistance column used for electrical conduction is adjusted accordingly, thereby sharing the current to ensure that the impact of the surge on the main contact remains within the threshold;

[0022] S4: In step S2, by alternately switching on and off the power of the first electromagnetic column and the second electromagnetic column, the movable plate will make a circular motion on the side wall of the rectangular plate to achieve rapid adjustment of the resistance value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 The figure is a schematic diagram of the overall structure of a switching capacitor contactor in the present invention.

[0025] Figure 2 It is a schematic diagram of the overall structure of the resistor in the present invention.

[0026] Figure 3 Schematic diagram of the internal structure of the resistor in the present invention.

[0027] Figure 4 For the present invention Figure 2 A cross-sectional view of the structure in the vertical direction.

[0028] Figure 5 It is a schematic diagram of the coordination of the variable resistance mechanism and the regulating mechanism in the present invention.

[0029] Figure 6 For the present invention Figure 5 Exploded view of the structure.

[0030] Figure 7It is a schematic diagram of the overall structure of the variable resistance disk in the present invention.

[0031] Figure 8 For the present invention Figure 7 Exploded view of the structure.

[0032] Fig. 9 It is a cross-sectional view of the matching mechanism of the varistor disk and the I-shaped insulating sleeve in the radial direction of the varistor disk in the present invention.

[0033] Fig.10 It is a schematic diagram of the overall structure of the linkage disk in the present invention.

[0034] Fig.11 It is a schematic diagram of the matching box and the movable plate in the present invention.

[0035] Fig.12 For the present invention Fig.11 Exploded view of the structure.

[0036] Fig.13 It is an exploded view of the outer protection mechanism in the present invention. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0040] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0041] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4, which is the first embodiment of the present invention, and this embodiment provides a switching capacitor contactor, in which the main contactor is used for electrical conduction of the capacitor, the resistor and the main contactor are arranged in parallel, and the adjustment mechanism 300 in the resistor can adjust the variable resistance mechanism 200, thereby realizing the adjustment of the resistance value of the circuit in the resistor.

[0042] Specifically, it includes a main contactor and a resistor fixedly connected to the top surface of the main contactor, the resistor includes an outer protection mechanism 100, including an outer protection box 101, an electric connection plate 102 symmetrically arranged on both sides of the outer protection box 101 and a controller 103 fixed on the top surface of the outer protection box 101, the outer protection box 101 is detachably connected to the top surface of the main contactor; a variable resistance mechanism 200 arranged inside the outer protection box 101, including three variable resistance disks 201 coaxially arranged in an array along the horizontal direction and linkage disks 202 symmetrically arranged at both ends of the three variable resistance disks 201; and an adjustment mechanism 300, including a drive sleeve 301 coaxially fixed on the end surface of one of the linkage disks 202, a matching box 302 arranged above the drive sleeve 301 and a movable plate 303 arranged inside the matching box 302.

[0043] See Figure 4 , Figure 6 , Figure 8 and Fig. 9As shown, an I-shaped groove 201g is provided at the center of the variable resistor disk 201, and an I-shaped insulating sleeve 201e is fixedly sleeved in the I-shaped groove 201g. An even number of convex grooves 201a with both ends passing through are provided on the variable resistor disk 201 along the circumferential array, so that the current can flow through two resistor columns 201a-1 in the same radial direction. A second insulating column 201c is sleeved at one end of the convex groove 201a close to the I-shaped insulating sleeve 201e to play a role of insulation protection. At the same time, a first insulating column 201b is sleeved at the other end of the convex groove 201a to play a role of insulation protection. A first conductive column 201b-1 is fixedly sleeved in the first insulating column 201b, and a second gasket 201b-2 is fixedly provided at one end of the first conductive column 201b-1. At the same time, a conductive protrusion 201b-3 is fixedly provided at the other end of the first conductive column 201b-1. A second conductive column 201c-1 is fixedly sleeved in the insulating column 201c, and one end of the second conductive column 201c-1 close to the I-shaped groove 201g is fixedly connected to the second conductive sheet 201c-2. Two adjacent second conductive sheets 201c-2 are attached to one side of the same first conductive sheet 201d. A resistor column 201a-1, a first spring 201a-2 and a first gasket 201a-3 are sequentially arranged inside the convex groove 201a along the radial direction. One end of the resistor column 201a-1 is in contact with the second gasket 201b-2, and the first gasket 201a-3 is in contact with one end of the second conductive column 201c-1. A through hole 201e-3 for the second insulating column 201c to slide through is provided on the side wall of the I-shaped insulating sleeve 201e. The provision of the through hole 201e-3 facilitates the coordinated installation between the second insulating column 201c and the variable resistor disk 201.

[0044] When the above arrangement is in use, the current enters from the conductive protrusion 201b-3 on one side of the variable resistor disk 201, and through the electrical conduction of the first conductive column 201b-1 and the second gasket 201b-2, the current flows through the resistor column 201a-1, the first spring 201a-2 and the first gasket 201a-3, and finally conducts from the second conductive column 201c-1 to the second conductive sheet 201c-2. Through the fitting arrangement of the second conductive sheet 201c-2 and the first conductive sheet 201d, the current enters the first gasket 201a-3 at the convex groove 201a position at 180° to the current inflow, and then conducts through the first spring 201a-2, the resistor column 201a-1, the second gasket 201b-2 and the first conductive column 201b-1 in turn, and finally flows out from the conductive protrusion 201b-3.

[0045] Furthermore, the resistance values ​​of each resistor column 201a-1 in multiple convex grooves 201a less than 180° are different, and the resistance values ​​of the resistor columns 201a-1 in two convex grooves 201a in the same radial direction are equal. This setting can adjust the resistance value of the circulating current when the variable resistor disk 201 rotates.

[0046] See Figure 5 , Figure 6 , Fig.10 and Fig.13 As shown, a plurality of first mounting holes 201f are provided on the end surface of the variable resistance disk 201 along a circumferential array, and a second mounting hole 202b is provided on the end surface of the linkage disk 202 in alignment with the first mounting hole 201f. The coaxial plurality of first mounting holes 201f and the plurality of second mounting holes 202b are fixed together by the same bolt rod 204, so that the synchronous rotation of the variable resistance disk 201 and the linkage disk 202 can be achieved. A ring tooth 301a is fixed on the outer side wall of the free end of the driving sleeve 301, and a bar tooth 303a meshing with the ring tooth 301a is fixed on the bottom surface of the movable plate 303.

[0047] A limiting annular groove 202a is provided on the side wall of the linkage disk 202 in the circumferential direction, and the lower end outer position of the limiting annular groove 202a is gap-matched with the limiting plate 105, and the limiting plate 105 is fixedly connected to the inner wall of the outer protection box 101, so as to play a limiting guide role when the linkage disk 202 rotates. An oil groove 105a is provided on one side surface of the limiting plate 105 that is in contact with the limiting annular groove 202a in the arc direction, and the oil groove 105a is filled with lubricating oil to reduce the friction of rotation;

[0048] When the above arrangement is in use, when the movable plate 303 moves in the horizontal direction, the engagement of the bar teeth 303a with the ring teeth 301a can drive the linkage disk 202 to rotate when the movable plate 303 moves, so as to achieve variable resistance in actual use.

[0049] See Figure 1 , Figure 2 , Figure 4 and Fig.13As shown, first installation grooves 101a are symmetrically provided on both side surfaces of the outer protection box 101, and an electric connection plate 102 is fixedly connected in the first installation groove 101a, and three electric connection blocks 102a are fixedly provided in an array in the horizontal direction on the electric connection plate 102, and the three electric connection blocks 102a are arranged in a one-to-one correspondence with the three variable resistor disks 201, and a conductive plate 102b is plugged into the outer wall of the electric connection block 102a, and one end of the conductive plate 102b located on the inner side of the outer protection box 101 is integrally provided with an elastic metal sheet 102b-1 for fitting with the conductive protrusion 201b-3, so as to realize electrical conduction between the elastic metal sheet 102b-1 and the conductive protrusion 201b-3, and one end of the conductive plate 102b located on the outer side of the outer protection box 101 is spirally connected with a conductive bolt 102c, so as to connect the conductive bolt 102c with the conductive line;

[0050] At least one of a temperature sensor, an infrared detection sensor and a current detection sensor is arranged at the main contact position of the main contactor, and the above-mentioned sensors are electrically connected to the controller 103 through a conductive line. Both the temperature sensor and the infrared detection sensor can collect the temperature value of the main contact in the main contactor when power is turned on, and the setting of the current detection sensor can collect the value of the current size at the main contact position when power is turned on. Through the collection of the above-mentioned values, whether there is still a surge at the main contact position when power is turned on can be monitored, and the monitored value is transmitted to the controller 103 to control whether the variable resistance mechanism 200 performs resistance change;

[0051] The conductive bolts 102c on the two symmetrical electrical connection blocks 102a are connected to the two ends of the main contact of one phase through conductive lines to realize the parallel connection of the varistor disk 201 and the main contact. This connection method is an existing technical means and will not be described in detail.

[0052] In addition, it should be noted that because the surge occurs at the moment of power-on, when the surge exceeds the threshold, although the resistance changing mechanism 200 will change resistance, the resistance changing will not affect the current power-on, but is to prepare for the subsequent power-on. Example 2

[0053] Reference Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that this embodiment is proposed to facilitate the staff to repair the variable resistance mechanism 200 and replace parts.

[0054] Specifically, the I-shaped insulating sleeve 201e is coaxially composed of a first T-shaped sleeve 201e-1 and a second T-shaped sleeve 201e-2. A third external thread 201e-4 is provided on the outer wall of one end of the first T-shaped sleeve 201e-1, and a third internal thread 201e-5 spirally matched with the third external thread 201e-4 is provided on the inner wall of one end of the second T-shaped sleeve 201e-2. This arrangement can realize the disassembly of the I-shaped insulating sleeve 201e itself, thereby facilitating the matching and disassembly between the I-shaped insulating sleeve 201e and the I-shaped groove 201g.

[0055] Furthermore, a plurality of plug posts 201e-7 are fixedly provided in a circumferential array on one side surface of the outer extension of the first T-shaped sleeve 201e-1, and a socket 201g-1 for slidingly inserting the plug posts 201e-7 is provided on the variable resistor disk 201 at one end of the I-shaped groove 201g. This arrangement can achieve the limiting coordination between the I-shaped insulating sleeve 201e and the I-shaped groove 201g, thereby avoiding slipping between the I-shaped insulating sleeve 201e and the variable resistor disk 201. A plurality of third disassembly holes 201e-8 are provided in a circumferential array on the outer extension of the second T-shaped sleeve 201e-2. The arrangement of the third disassembly holes 201e-8 facilitates the staff to realize the rotation of the second T-shaped sleeve 201e-2 by using tools.

[0056] See Figure 4 and Figure 8 As shown, a first external thread 201b-5 is provided on the outer wall of the first insulating column 201b, and a first internal thread 201a-5 spirally matched with the first external thread 201b-5 is provided on the inner side of one end of the convex groove 201a to facilitate the disassembly and replacement of the first insulating column 201b. A first disassembly hole 201b-4 is eccentrically provided on one end surface of the first insulating column 201b to facilitate the disassembly and assembly of the first insulating column 201b.

[0057] A second external thread 201c-4 is provided on the outer wall of the second insulating column 201c, and a second internal thread 201a-6 spirally matched with the second external thread 201c-4 is provided on the inner wall of one end of the convex groove 201a to facilitate the disassembly and replacement of the second insulating column 201c. A second disassembly hole 201c-3 is eccentrically provided on one end face of the second insulating column 201c to facilitate the disassembly and assembly of the second insulating column 201c.

[0058] Furthermore, a limiting column 201d-1 is fixedly provided in the middle of one side surface of the first conductive sheet 201d, and a limiting head 201d-2 is fixedly provided on the other end of the limiting column 201d-1. A limiting hole 201e-6 for gap fitting of the limiting head 201d-2 is provided on the inner wall of the I-shaped insulating sleeve 201e, thereby realizing the fixed connection of the first conductive sheet 201d; a groove 201a-4 for abutting one end of the second conductive column 201c-1 is provided on one side surface of the first gasket 201a-3, thereby realizing electrical conduction between the first gasket 201a-3 and the second conductive column 201c-1. Example 3

[0059] Reference Figure 4 , Figure 6 and Fig.10 , which is the third embodiment of the present invention, is based on any of the above embodiments, except that this embodiment is proposed in order to improve the heat dissipation of the resistor when processing surges, thereby increasing the service life of the resistor.

[0060] Specifically, a heat dissipation rod 203 is provided at the inner center position of the I-shaped insulating sleeve 201e along the axial direction, and both ends of the heat dissipation rod 203 are slidably sleeved with limit sleeves 202c, and the two limit sleeves 202c are respectively fixedly connected to the inner side walls of the two linkage disks 202 through connecting strips 202c-1, and a plurality of heat dissipation fins 203a are fixedly arranged along a circumferential array on the side wall of the heat dissipation rod 203 located on the inner side of the variable resistor disk 201;

[0061] When the above arrangement is in use, air can flow from the middle of the variable resistor disk 201 and the linkage disk 202. Combined with the arrangement of the heat sink 203a on the heat dissipation rod 203, the heat generated in the variable resistor disk 201 can be effectively dissipated, thereby increasing its service life.

[0062] Furthermore, a second mounting groove 101b is provided on both end surfaces of the outer protective box 101 coaxially with the heat dissipation rod 203, and a dustproof plate 104 is fixedly installed in the second mounting groove 101b. The setting of the dustproof plate 104 can play a dustproof role, preventing dust from entering the inner side of the variable resistor plate 201 and the linkage plate 202, thereby reducing the service life. Example 4

[0063] Reference Figure 3 , Figure 4 , Figure 5 , Fig.11 and Fig.12 , which is the fourth embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that in order to facilitate the staff to better implement the present invention, the specific structure of the adjustment mechanism 300 is described.

[0064] Specifically, a connecting ear 303d is fixedly provided on one side of the top surface of the movable plate 303, and a connecting block 303e is fixedly provided on the other side of the top surface of the movable plate 303. A first I-shaped rod 303b is slidably sleeved on the connecting ear 303d in the horizontal direction, and one end of the first I-shaped rod 303b is attached to an inner wall of one side of the matching box 302. A second spring 303b-1 is slidably sleeved on the first I-shaped rod 303b between the matching box 302 and the connecting ear 303d, and the second spring 303b-1 can realize the reset of the first I-shaped rod 303b.

[0065] A telescopic groove for slidingly sleeve one end of the second I-shaped rod 303c is provided on the top surface of the connecting block 303e in the vertical direction, and a third spring 303c-1 is provided in the telescopic groove below the second I-shaped rod 303c, and the third spring 303c-1 can realize the reset of the second I-shaped rod 303c. A sliding groove 302b for gap fitting of the upper end of the second I-shaped rod 303c is provided on the inner top surface of the matching box 302 in the horizontal direction, and the setting of the sliding groove 302b can realize the limit guide of the movement of the second I-shaped rod 303c.

[0066] A first electromagnetic column 302c is fixedly sleeved on the side wall of the matching box 302 below the first I-shaped rod 303b, and a second electromagnetic column 302d is fixedly sleeved on the top surface of the matching box 302 between the first electromagnetic column 302c and the movable plate 303;

[0067] A rectangular plate 302e is fixedly provided on the inner wall of the matching box 302 on one side of the movable plate 303, and the rectangular plate 302e is arranged on a side close to the first electromagnetic column 302c. A guide plate 303f is fixedly provided on a side surface of the movable plate 303 close to the rectangular plate 302e, and the guide plate 303f is arranged on a side close to the first electromagnetic column 302c.

[0068] When the above arrangement is in use, when resistance change is required, the movable plate 303 can be adsorbed by energizing the first electromagnetic column 302c, at which time the second spring 303b-1 is in a compressed state, and then the guide plate 303f is located below the rectangular plate 302e for limiting, and the movement of the movable plate 303 can realize the rotation of the ring gear 301a, and the first electromagnetic column 302c is powered off when the movable plate 303 is fully adsorbed, and the second electromagnetic column 302d starts to be energized at the same time to enable the second electromagnetic column 302d to adsorb the movable plate 303, and at this time the third spring 303c-1 is in a compressed state. state, and the second spring 303b-1 will release the elastic force, and the guide plate 303f will move within the upper limit of the rectangular plate 302e. After the second spring 303b-1 completely releases the elastic force, the guide plate 303f moves to the other end of the rectangular plate 302e and disengages. Then, under the action of the elastic force released by the third spring 303c-1, the guide plate 303f will move back to the bottom of the rectangular plate 302e. In this way, the guide plate 303f can move one circle along the rectangular plate 302e. Through multiple circles of movement, the movable plate 303 can repeatedly rotate the ring gear 301a to achieve the required resistance change.

[0069] Furthermore, a fixing plate 302 a is fixedly disposed on the top surface of the matching box 302 , and the fixing plate 302 a is fixedly connected to the inner top surface of the outer protective box 101 . Example 5

[0070] This embodiment is the fifth embodiment of the present invention. This embodiment provides a method for using a switching capacitor contactor. Specifically, the switching capacitor contactor is installed and used according to the following steps:

[0071] S1: When the power is on, the sensor will detect the data of the main contact position. When the detected data is within the threshold, the resistor will not act. The resistor column 201a-1 in the resistor will share the surge when the power is on to protect the capacitor.

[0072] S2: When the detected value is outside the threshold, the controller 103 controls the first electromagnetic column 302c to be energized to adsorb the movable plate 303, and the bar teeth 303a on the movable plate 303 drive the ring teeth 301a to rotate, and then under the fixation of the screw rod, the synchronous rotation of the multiple variable resistance disks 201 is realized;

[0073] S3: By rotating the variable resistance disk 201, the resistance value of the resistance column 201a-1 used for electrical conduction is adjusted accordingly, thereby sharing the current to ensure that the impact of the surge on the main contact remains within the threshold;

[0074] S4: In step S2, by alternately switching on and off the power of the first electromagnetic column 302c and the second electromagnetic column 302d, the movable plate 303 will make a circular motion on the side wall of the rectangular plate 302e to achieve rapid adjustment of the resistance value.

[0075] In addition, it should be noted that the components not described in detail in this article are prior art.

[0076] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0077] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0078] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A switched capacitor contactor, comprising a main contactor and a resistor fixedly connected to the top surface of the main contactor, characterized in that: The resistor includes, The outer protection mechanism (100) comprises an outer protection box (101), electrical connection plates (102) symmetrically arranged on both sides of the outer protection box (101), and a controller (103) fixedly arranged on the top surface of the outer protection box (101); The variable resistance mechanism (200) is arranged inside the outer protective box (101), comprising three variable resistance disks (201) arranged in a coaxial array along a horizontal direction and linkage disks (202) symmetrically arranged at both ends of the three variable resistance disks (201); an I-shaped groove (201g) is provided at the center of the variable resistance disk (201), and an I-shaped insulating sleeve (201e) is fixedly sleeved in the I-shaped groove (201g); an even number of convex grooves (201a) are provided on the variable resistance disk (201) along a circumferential array and penetrate through both ends; a second insulating column (201c) is sleeved at one end of the convex groove (201a) close to the I-shaped insulating sleeve (201e); and the convex groove (201a) is sleeved at one end of the convex groove (201a) close to the I-shaped insulating sleeve (201e). The other end of the first insulating column (201a) is sleeved with a first insulating column (201b), a first conductive column (201b-1) is fixedly sleeved in the first insulating column (201b), a second gasket (201b-2) is fixedly provided at one end of the first conductive column (201b-1), and a conductive protrusion (201b-3) is fixedly provided at the other end of the first conductive column (201b-1), a second conductive column (201c-1) is fixedly sleeved in the second insulating column (201c), and a second conductive sheet (201c-2) is fixedly connected to one end of the second conductive column (201c-1) close to the I-shaped groove (201g), and two adjacent second conductive sheets (201c-2) are fixedly connected to each other. 01c-2) is attached to one side of the same first conductive sheet (201d), the interior of the convex groove (201a) is provided with a resistor column (201a-1), a first spring (201a-2) and a first gasket (201a-3) in sequence along the radial direction, one end of the resistor column (201a-1) is in contact with the second gasket (201b-2), and the first gasket (201a-3) is in contact with one end of the second conductive column (201c-1), and a through hole (201e-3) for the second insulating column (201c) to slide through is provided on the side wall of the I-shaped insulating sleeve (201e); the variable resistance disk (201) is arranged at a circumferential angle of less than 180 The resistance values ​​of the resistance columns (201a-1) in the multiple convex grooves (201a) in the region of ° are different, and the resistance values ​​of the resistance columns (201a-1) in the two convex grooves (201a) in the same diameter line direction of the variable resistance disk (201) are equal; a plurality of first mounting holes (201f) are provided on the end surface of the variable resistance disk (201) in a circumferential array, and a second mounting hole (202b) is provided on the end surface of the linkage disk (202) in alignment with the first mounting hole (201f), and the coaxial multiple first mounting holes (201f) and multiple second mounting holes (202b) are fixed together by the same bolt rod (204); and, The adjustment mechanism (300) comprises a driving sleeve (301) coaxially fixed on the end surface of one of the linkage disks (202), a matching box (302) arranged above the driving sleeve (301), and a movable plate (303) arranged inside the matching box (302), wherein a ring tooth (301a) is fixedly provided on the outer wall of the free end of the driving sleeve (301), and a bar tooth (303a) meshing with the ring tooth (301a) is fixedly provided on the bottom surface of the movable plate (303); A connecting ear (303d) is fixedly provided on one side of the top surface of the movable plate (303), and a connecting block (303e) is fixedly provided on the other side of the top surface of the movable plate (303); a first I-shaped rod (303b) is slidably sleeved on the connecting ear (303d) in a horizontal direction, and one end of the first I-shaped rod (303b) is attached to an inner wall of one side of the matching box (302); a second spring (303b-1) is slidably sleeved on the first I-shaped rod (303b) between the matching box (302) and the connecting ear (303d); A telescopic groove for slidingly sleeved one end of the second I-shaped rod (303c) is provided on the top surface of the connecting block (303e) in the vertical direction, and a third spring (303c-1) is provided in the telescopic groove below the second I-shaped rod (303c); a sliding groove (302b) for clearance fit of the upper end of the second I-shaped rod (303c) is provided on the inner top surface of the matching box (302) in the horizontal direction; A first electromagnetic column (302c) is fixedly sleeved on the side wall of the matching box (302) below the first I-shaped rod (303b), and a second electromagnetic column (302d) is fixedly sleeved on the top surface of the matching box (302) between the first electromagnetic column (302c) and the movable plate (303); A rectangular plate (302e) is fixedly provided on the inner wall of the matching box (302) on one side of the movable plate (303), and the rectangular plate (302e) is arranged on a side close to the first electromagnetic column (302c); a guide plate (303f) is fixedly provided on a side surface of the movable plate (303) close to the rectangular plate (302e) and is in contact with the side surface of the rectangular plate (302e), and the guide plate (303f) is arranged on a side close to the first electromagnetic column (302c); A fixing plate (302a) is fixedly provided on the top surface of the matching box (302), and the fixing plate (302a) is fixedly connected to the inner top surface of the outer protection box (101).

2. A switching capacitor contactor according to claim 1, characterized in that: First installation grooves (101a) are symmetrically provided on both side surfaces of the outer protection box (101), and an electric connection plate (102) is fixedly connected in the first installation groove (101a); three electric connection blocks (102a) are fixedly provided in an array in a horizontal direction on the electric connection plate (102), and the three electric connection blocks (102a) are arranged in a one-to-one correspondence with the three variable resistor disks (201); a conductive plate (102b) is plugged into the outer wall of the electric connection block (102a); one end of the conductive plate (102b) located inside the outer protection box (101) is integrally provided with an elastic metal sheet (102b-1) for fitting with a conductive protrusion (201b-3); and one end of the conductive plate (102b) located outside the outer protection box (101) is spirally connected with a conductive bolt (102c).

3. A switched capacitor contactor as claimed in claim 2, characterized in that: A limiting annular groove (202a) is provided on the side wall of the linkage disk (202) in the circumferential direction, the lower end outer side of the limiting annular groove (202a) is clearance-matched with a limiting plate (105), and the limiting plate (105) is fixedly connected to the inner wall of the outer protective box (101), and an oil groove (105a) is provided on one side surface of the limiting plate (105) that is in contact with the limiting annular groove (202a) in the arc direction.

4. A switched capacitor contactor as claimed in claim 2, characterized in that: At least one of a temperature sensor, an infrared detection sensor and a current detection sensor is provided at the main contact position of the main contactor, and the above sensor is electrically connected to the controller (103) via a conductive line; The conductive bolts (102c) on the two symmetrical electrical connection blocks (102a) are respectively connected to the two ends of a main contact of one phase through a conductive line, so that the variable resistance disk (201) and the main contact are connected in parallel.

5. A switched capacitor contactor according to claim 3 or 4, characterized in that: The I-shaped insulating sleeve (201e) is coaxially composed of a first T-shaped sleeve (201e-1) and a second T-shaped sleeve (201e-2); a third external thread (201e-4) is provided on an outer wall at one end of the first T-shaped sleeve (201e-1); and a third internal thread (201e-5) spirally matched with the third external thread (201e-4) is provided on an inner wall at one end of the second T-shaped sleeve (201e-2); A plurality of plug posts (201e-7) are fixedly arranged in a circumferential array on one side surface of the outer extension of the first T-shaped sleeve (201e-1), and a plug hole (201g-1) for slidingly inserting the plug posts (201e-7) is provided on the variable resistor disk (201) at one end of the I-shaped slot (201g), and a plurality of third disassembly holes (201e-8) are provided in a circumferential array on the outer extension of the second T-shaped sleeve (201e-2).

6. A switched capacitor contactor as claimed in claim 5, characterized in that: A first external thread (201b-5) is provided on the outer wall of the first insulating column (201b), and a first internal thread (201a-5) spirally matched with the first external thread (201b-5) is provided inside one end of the convex groove (201a), and a first disassembly hole (201b-4) is eccentrically provided on one end surface of the first insulating column (201b); A second external thread (201c-4) is provided on the outer wall of the second insulating column (201c), and a second internal thread (201a-6) spirally matched with the second external thread (201c-4) is provided on the inner wall of one end of the convex groove (201a), and a second disassembly hole (201c-3) is eccentrically provided on one end surface of the second insulating column (201c).

7. A switched capacitor contactor according to claim 6, characterized in that: A limiting column (201d-1) is fixedly provided in the middle of one side surface of the first conductive sheet (201d), and a limiting head (201d-2) is fixedly provided on the other end of the limiting column (201d-1), and a limiting hole (201e-6) for clearance fit of the limiting head (201d-2) is provided on the inner side wall of the I-shaped insulating sleeve (201e); A groove (201a-4) for abutting one end of the second conductive column (201c-1) is provided on one side surface of the first gasket (201a-3).

8. A switched capacitor contactor according to claim 6 or 7, characterized in that: A heat dissipation rod (203) is provided at the inner center position of the I-shaped insulating sleeve (201e) along the axial direction, and both ends of the heat dissipation rod (203) are slidably sleeved with limit sleeves (202c), and the two limit sleeves (202c) are respectively fixedly connected to the inner side walls of the two linkage disks (202) through connecting strips (202c-1), and a plurality of heat dissipation fins (203a) are fixedly provided along a circumferential array on the side wall of the heat dissipation rod (203) located on the inner side of the variable resistance disk (201); Second installation grooves (101b) are coaxially formed with the heat dissipation rod (203) on both end surfaces of the outer protective box (101), and a dustproof plate (104) is fixedly installed in the second installation groove (101b).

9. A method for using a switched capacitor contactor, characterized in that: A switching capacitor contactor as claimed in any one of claims 4 to 8 is installed and used in the following steps; S1: When the power is on, the sensor will detect the data of the main contact position. When the detected data is within the threshold, the resistor will not act. The resistor column (201a-1) in the resistor will share the surge when the power is on to protect the capacitor. S2: When the detected value is outside the threshold, the controller (103) controls the first electromagnetic column (302c) to be energized to adsorb the movable plate (303), and the bar teeth (303a) on the movable plate (303) drive the ring teeth (301a) to rotate, and then under the fixation of the screw rod, the synchronous rotation of the multiple variable resistance disks (201) is achieved; S3: by rotating the variable resistance disk (201), the resistance value of the resistance column (201a-1) used for electrical conduction is adjusted accordingly, thereby sharing the current to ensure that the impact of the surge on the main contact remains within the threshold; S4: In step S2, by alternately switching the power on and off of the first electromagnetic column (302c) and the second electromagnetic column (302d), the movable plate (303) will make a circular motion on the side wall of the rectangular plate (302e) to achieve rapid adjustment of the resistance value.

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