CN118782425B - A switching capacitor contactor and a method of using the same - Google Patents
A switching capacitor contactor and a method of using the same Download PDFInfo
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- CN118782425B CN118782425B CN202411261380.4A CN202411261380A CN118782425B CN 118782425 B CN118782425 B CN 118782425B CN 202411261380 A CN202411261380 A CN 202411261380A CN 118782425 B CN118782425 B CN 118782425B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 50
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- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000017525 heat dissipation Effects 0.000 claims abstract description 12
- 230000008261 resistance mechanism Effects 0.000 claims abstract 2
- 238000001514 detection method Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
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- 230000009466 transformation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
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- 239000000428 dust Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/021—Bases; Casings; Covers structurally combining a relay and an electronic component, e.g. varistor, RC circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/12—Ventilating; Cooling; Heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Thermistors And Varistors (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
本发明涉及接触器技术领域，特别是一种切换电容接触器及其使用方法，包括主触器和固定连接在主触器顶面上的电阻器，电阻器包括，外护机构，包括外护盒、呈对称设置在外护盒两侧的电连板和固设在外护盒顶面上的控制器；设置在外护盒内部的变阻机构，包括沿水平方向同轴阵列设置的三个变阻盘和呈对称设置在三个变阻盘两端的联动盘，变阻盘的中心位置开设有工形槽；以及，调节机构，包括同轴固设在其中一个联动盘端面上的驱动套、设置在驱动套上方的配合盒和设置在配合盒内部的活动板，该切换电容接触器可以根据电涌的变换对处理电涌的电阻进行适用性调整，从而提高接触器的使用寿命，且本接触器的散热效果好，实用性好。
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
The invention relates to the technical field of contactors, in particular to a switched capacitor contactor and a use method thereof.
Background
The switching capacitor contactor is a special contactor for switching on and off a low-voltage parallel capacitor, is widely used in automatic compensation powerless compensation equipment, and has the greatest characteristics that a resistor is arranged, and current is conducted through the resistor before a main contact conducts, so that the damage of surge generated when a power supply is switched on to the capacitor is avoided, and the switching capacitor contactor is disclosed as a prior publication CN 203205347U-switching capacitor contactor;
The conventional switching capacitor contactor has a good protection effect on the switching capacitor contactor and equipment when in use, but the conventional switching capacitor contactor still has certain defects in actual use, namely, firstly, surge is regulated in a fixed resistance mode along with the increase of the service time and the fluctuation of a power grid, the current passing through the contactor still has a larger problem, and the condition still causes damage to the capacitor in actual use, so that the service life of the switching capacitor contactor is reduced;
Accordingly, there is a need for improvements in the art to address the above-described problems.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
In view of the problem that the conventional switching capacitor contactor still causes damage to the main contactor along with the increase of the service time and the fluctuation of the power grid, a switching capacitor contactor is provided.
In order to solve the technical problems, the invention provides the following technical scheme: A switched capacitor contactor comprises a main contactor and a resistor fixedly connected to the top surface of the main contactor, wherein the resistor comprises an outer protection mechanism, an outer protection box, electric connection plates symmetrically arranged on two sides of the outer protection box and a controller fixedly arranged on the top surface of the outer protection box; the resistance changing mechanism is arranged inside the outer protection box and comprises three resistance changing discs and linkage discs, wherein the three resistance changing discs are coaxially arranged along the horizontal direction, the linkage discs are symmetrically arranged at two ends of the three resistance changing discs, a I-shaped groove is formed in the center position of each resistance changing disc, I-shaped insulating sleeves are fixedly sleeved in the I-shaped groove, even-numbered convex grooves which penetrate through the two ends of each resistance changing disc are formed in the circumferential direction, a second insulating column is sleeved at one end of each convex groove close to each I-shaped insulating sleeve, a first insulating column is sleeved at the other end of each convex groove, a first conductive column is fixedly sleeved in each first insulating column, a second gasket is fixedly arranged at one end of each first conductive column, a conductive protruding head is fixedly arranged at the other end of each first conductive column, a second conductive column is fixedly sleeved in each second insulating column, one end of each second conductive column close to each I-shaped groove is fixedly connected with a second conductive sheet, two adjacent second conductive sheets are attached to one side face of each first conductive sheet, a resistor column, a first spring and a first gasket are sequentially arranged in the radial direction inside each convex groove, one end of each resistor column is in contact with the second gasket, and simultaneously, one end of each first conductive column is in contact with the second gasket is in the first insulating column, and the first insulating column is sequentially connected with the second insulating column in the sliding mode, and the second insulating column is sequentially penetrates through the first insulating column; the resistance values of the resistor columns in the plurality of convex grooves smaller than 180 degrees are different, the resistance values of the resistance columns in the two convex grooves in the same radial direction are equal, a plurality of first mounting holes are formed in the end face of the variable resistance disc in a circumferential array mode, a second mounting hole is formed in the end face of the linkage disc in an aligned mode with the first mounting holes, the coaxial first mounting holes and the coaxial second mounting holes are fixed in a matched mode through the same bolt rod, and the adjusting mechanism comprises a driving sleeve, a matching box and a movable plate, wherein the driving sleeve is coaxially and fixedly arranged on the end face of one linkage disc, the matching box is arranged above the driving sleeve, the movable plate is arranged in the matching box, annular teeth are fixedly arranged on the outer side wall of the free end of the driving sleeve, and strip teeth meshed with the annular teeth are fixedly arranged on the bottom face of the movable plate.
The switching capacitor contactor has the beneficial effects that when the switching capacitor contactor is used, the driving sleeve can be rotated through the movement of the strip teeth in the transverse direction and the meshing arrangement between the strip teeth and the ring teeth, so that the synchronous rotation of three variable resistance discs is realized, and the resistance for electric conduction can be correspondingly adjusted in the rotation process of the variable resistance discs through the different resistance values of the resistance columns in the convex grooves and the same resistance value of the resistance columns in the same radial direction, so that the resistance value adjustment in a circuit is realized according to the change of surge, the current passing through the main contactor is kept within the corresponding threshold range all the time, the capacitor is well protected, and the service life of the capacitor is prolonged.
The invention relates to a switching capacitor contactor, which is a preferable scheme that first mounting grooves are symmetrically formed on two side surfaces of an outer protective box, electric connecting plates are fixedly connected in the first mounting grooves, three electric connecting blocks are fixedly arranged on the electric connecting plates in an array along the horizontal direction, the three electric connecting blocks are arranged in a one-to-one correspondence with three varistor discs, conductive plates are inserted on the outer side walls of the electric connecting blocks, elastic metal sheets for being attached to conductive protruding heads are integrally formed at one end of the conductive plates positioned at the inner side of the outer protective box, and conductive bolts are spirally connected at one end of the conductive plates positioned at the outer side of the outer protective box.
As a preferable scheme of the switching capacitor contactor, a limit ring groove is formed in the side wall of a linkage disc along the circumferential direction, a limit plate is in clearance fit with the outer side of the lower end of the limit ring groove, the limit plate is fixedly connected to the inner wall of an outer protection box, and an oil groove is formed in one side face of the limit plate, which is attached to the limit ring groove, along the circular arc direction.
The invention relates to a switching capacitor contactor, which is a preferable scheme that at least one of a temperature sensor, an infrared detection sensor and a current detection sensor is arranged at the position of a main contact of the main contactor and is electrically connected with a controller through a conducting wire, and conducting bolts on two symmetrical electric connection blocks are respectively connected with two ends of a main contact of a phase through the conducting wire so as to realize that a varistor disc and the main contact are connected in parallel.
The invention relates to a switching capacitor contactor, which is a preferable scheme, wherein an I-shaped insulating sleeve is formed by coaxially arranging a first T-shaped sleeve and a second T-shaped sleeve, a third external thread is arranged on the outer side wall of one end of the first T-shaped sleeve, a third internal thread which is in spiral fit with the third external thread is arranged on the inner wall of one end of the second T-shaped sleeve, a plurality of inserting posts are fixedly arranged on one side surface of an extension part of the first T-shaped sleeve along a circumferential array, inserting holes for sliding insertion of the inserting posts are arranged on a variable resistance disc at one end of the I-shaped groove, and a plurality of third dismounting holes are arranged on the extension part of the second T-shaped sleeve along the circumferential array.
The invention relates to a switching capacitor contactor, which is a preferable scheme that a first external thread is arranged on the outer side wall of a first insulating column, a first internal thread which is in spiral fit with the first external thread is arranged on the inner part of one end of a convex groove, a first dismounting hole is eccentrically arranged on one end surface of the first insulating column, a second external thread is arranged on the outer side wall of a second insulating column, a second internal thread which is in spiral fit with the second external thread is arranged on the inner wall of one end of the convex groove, and a second dismounting hole is eccentrically arranged on one end surface of the second insulating column.
The invention relates to a switching capacitor contactor, which is a preferable scheme that a limit post is fixedly arranged in the middle of one side surface of a first conductive sheet, a limit head is fixedly arranged at the other end of the limit post, a limit hole for clearance fit of the limit head is formed in the inner side wall of an I-shaped insulating sleeve, and a groove for abutting one end of a second conductive post is formed in one side surface of a first gasket.
In view of the fact that the conventional switching capacitor contactor generates a large amount of heat in the surge treatment process and damages the contactor, the switching capacitor contactor is further preferably improved in the scheme that a radiating rod is arranged at the inner side center of an I-shaped insulating sleeve along the axis direction, limiting sleeves are sleeved at two ends of the radiating rod in a sliding mode, the two limiting sleeves are fixedly connected to the inner side walls of two linkage plates through connecting strips respectively, a plurality of radiating fins are fixedly arranged on the side walls of the radiating rod located at the inner side of a varistor disc along a circumferential array, second mounting grooves are coaxially formed in the two end faces of an outer protection box and are coaxial with the radiating rod, and dustproof discs are fixedly mounted in the second mounting grooves.
The invention has the beneficial effects that when the switching capacitor contactor is used, the contact area between the varistor disc and air can be increased by arranging the I-shaped groove at the central position of the varistor disc, and the effective heat conduction can be realized by arranging the radiating fins on the radiating rods in a matched manner, so that the rapid outward discharge of heat generated in the varistor disc processing surge process can be realized, the influence on the varistor disc caused by the residual excessive heat in the varistor disc can be avoided, and the service life of the varistor disc can be prolonged.
The invention relates to a preferable scheme of a switching capacitor contactor, wherein a connecting lug is fixedly arranged on one side of the top surface of a movable plate, a connecting block is fixedly arranged on the other side of the top surface of the movable plate, a first I-shaped rod is sleeved on the connecting lug in a sliding mode along the horizontal direction, one end of the first I-shaped rod is attached to the inner wall of one side of a matching box, a second spring is sleeved on the first I-shaped rod at the position between the matching box and the connecting lug in a sliding mode, a telescopic groove for sliding and connecting one end of the second I-shaped rod is formed in the top surface of the connecting block along the vertical direction, a third spring is arranged in the telescopic groove below the second I-shaped rod, a sliding groove for clearance fit of the upper end of the second I-shaped rod is formed in the inner top surface of the matching box along the horizontal direction, a first electromagnetic column is fixedly sleeved on the side wall of the matching box below the first I-shaped rod, a second electromagnetic column is fixedly sleeved on the top surface of the matching box at the position between the first electromagnetic column and the movable plate, a second electromagnetic column is fixedly sleeved on the inner wall of the matching box side of one side of the movable plate, a rectangular plate is arranged on one side close to the first electromagnetic column, a telescopic groove for sliding and is used for sliding and sleeved on one side of the second electromagnetic column, a guide plate is fixedly arranged on the side of the rectangular plate, and is close to the rectangular plate.
In addition, the invention also provides a using method of the switching capacitance contactor, wherein the switching capacitance contactor is installed and used as follows;
S1, when the power is on, the sensor detects the data of the position of the main contact, when the detected data is within a threshold value, the resistor does not act, and a resistance column in the resistor shares surge when the power is on, so that the capacitor is protected;
s2, when the detected value is out of a threshold value, the controller controls the first electromagnetic column to be electrified to adsorb the movable plate, the strip teeth on the movable plate drive the ring teeth to rotate, and then the synchronous rotation of the plurality of resistance changing discs is realized under the fixation of the screw rod;
S3, through rotation of the varistor disc, the resistance value of the resistance column for electric conduction is correspondingly adjusted, so that current is shared, and the influence of surge on the main contact is ensured to be kept within a threshold value;
And S4, in the step S2, the movable plate can do circumferential motion on the side wall of the rectangular plate through alternate power on and off of the first electromagnetic column and the second electromagnetic column so as to realize quick adjustment of the resistance value.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
Fig. 1 is a schematic diagram of the overall structure of a switched capacitor contactor according to the present invention.
Fig. 2 is a schematic diagram of the overall structure of the resistor in the present invention.
Fig. 3 is a schematic diagram of the internal structure of the resistor in the present invention.
Fig. 4 is a vertical cross-sectional view of the structure of fig. 2 in accordance with the present invention.
Fig. 5 is a schematic diagram showing the cooperation of the varistor mechanism and the adjusting mechanism in the present invention.
Fig. 6 is an exploded view of the structure of fig. 5 in accordance with the present invention.
Fig. 7 is a schematic diagram of the overall structure of the varistor disc in the present invention.
Fig. 8 is an exploded view of the structure of fig. 7 in accordance with the present invention.
Fig. 9 is a cross-sectional view of the varistor disc and the h-shaped insulating sleeve engaging mechanism in the radial direction of the varistor disc in the present invention.
Fig. 10 is a schematic view of the overall structure of the linkage disc in the present invention.
Fig. 11 is a schematic view showing the cooperation of the cooperation box and the movable plate in the present invention.
Fig. 12 is an exploded view of the structure of fig. 11 in accordance with the present invention.
Fig. 13 is an exploded view of the outer shield mechanism of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1, 2, 3 and 4, a first embodiment of the present invention provides a switched capacitor contactor, in which a main contactor is used for electric conduction of a capacitor, a resistor is arranged in parallel with the main contactor, and an adjusting mechanism 300 in the resistor can adjust a resistance changing mechanism 200, so as to adjust a resistance value of a circuit in the resistor.
Specifically, the resistor comprises a main contactor and a resistor fixedly connected to the top surface of the main contactor, wherein the resistor comprises an outer protection mechanism 100, a resistance changing mechanism 200, an adjusting mechanism 300 and a driving mechanism, wherein the outer protection mechanism comprises an outer protection box 101, electric connection plates 102 symmetrically arranged on two sides of the outer protection box 101, a controller 103 fixedly arranged 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, the resistance changing mechanism 200 is arranged inside the outer protection box 101 and comprises three resistance changing discs 201 coaxially arranged along the horizontal direction and linkage discs 202 symmetrically arranged at two ends of the three resistance changing discs 201, and the adjusting mechanism 300 comprises a driving sleeve 301 coaxially fixedly arranged on the end surface of one linkage disc 202, a matching box 302 arranged above the driving sleeve 301 and a movable plate 303 arranged inside the matching box 302.
Referring to fig. 4, fig. 6, fig. 8 and fig. 9, a working groove 201g is formed in the central position of the varistor 201, a working insulating sleeve 201e is fixedly sleeved in the working groove 201g, even number convex grooves 201a penetrating through the two ends are formed in the varistor 201 along a circumferential array, so that 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 working insulating sleeve 201e to play an insulating protection role, meanwhile, a first insulating column 201b is sleeved at the other end of the convex groove 201a to play an insulating protection role, a first conductive column 201b-1 is fixedly sleeved in the first insulating column 201b, one end of the first conductive column 201b-1 is fixedly provided with a second gasket 201b-2, the other end of the first conductive column 201b-1 is fixedly provided with a conductive head 201b-3, a second conductive column 201c-1 is fixedly sleeved in the second insulating column 201c, a second conductive column 201c-1 is close to one end of the working column 201c-1 and is fixedly connected with a first gasket 201 c-201 c in the same radial direction, a second gasket 201 c-3 is arranged between the first gasket 201c and the first gasket 201 c-201 c and the second gasket 201 c-201 c in turn, and the second gasket 201 c-3 is arranged in a through the first insulating column 201 c-3 and the first gasket 201 c-201 c is matched with the first gasket 201 c-201 c and the second gasket 201 c-201 c in the radial direction;
When the resistor is used, current enters from the conductive lug 201b-3 on one side of the resistor disc 201, passes through the electrical conduction of the first conductive column 201b-1 and the second gasket 201b-2, flows through the resistor column 201a-1, the first spring 201a-2 and the first gasket 201a-3, finally passes through the second conductive column 201c-1 to the second conductive sheet 201c-2, passes through the bonding arrangement of the second conductive sheet 201c-2 and the first conductive sheet 201d, passes through the conduction of the first conductive sheet 201d and the second conductive sheet 201c-2, enters the first gasket 201a-3 which flows into the position of the convex groove 201a which is 180 degrees with the current, and then sequentially passes through the conduction of the first spring 201a-2, the resistor column 201a-1, the second gasket 201b-2 and the first conductive column 201b-1, and finally flows out from the conductive lug 201 b-3.
Further, the resistance values of the resistor columns 201a-1 in the plurality of convex grooves 201a smaller than 180 ° are different, and the resistance values of the resistor columns 201a-1 in the two convex grooves 201a in the same radial direction are equal, and this arrangement can adjust the resistance value in the flowing current when the varistor disc 201 rotates.
Referring to fig. 5, 6, 10 and 13 in detail, a plurality of first mounting holes 201f are formed in the end face of the varistor disc 201 along a circumferential array, meanwhile, a second mounting hole 202b is formed in the end face of the linkage disc 202 in alignment with the first mounting holes 201f, and the plurality of coaxial first mounting holes 201f and the plurality of second mounting holes 202b are fixed in a matched manner through the same bolt rod 204, so that synchronous rotation of the varistor disc 201 and the linkage disc 202 can be realized, annular teeth 301a are fixedly arranged on the outer side wall of the free end of the driving sleeve 301, and strip teeth 303a meshed with the annular teeth 301a are fixedly arranged on the bottom face of the movable plate 303;
A limiting ring groove 202a is formed in the side wall of the linkage disc 202 along the circumferential direction, a limiting plate 105 is in clearance fit with the outer side position of the lower end of the limiting ring groove 202a, and the limiting plate 105 is fixedly connected to the inner wall of the outer protection box 101, so that the limiting guide function is achieved when the linkage disc 202 rotates, an oil groove 105a is formed in one side surface of the limiting plate 105, which is attached to the limiting ring groove 202a, along the circular arc direction, lubricating oil is filled in the oil groove 105a, and the rotating friction force is reduced;
When the movable plate 303 moves in the horizontal direction, the teeth 303a and the ring teeth 301a mesh, so that the movable plate 303 moves to drive the linkage disc 202 to rotate, thereby realizing resistance change in actual use.
As shown in fig. 1, fig. 2, fig. 4 and fig. 13 in detail, the two side surfaces of the outer protection box 101 are symmetrically provided with first mounting grooves 101a, electric connection plates 102 are fixedly connected in the first mounting grooves 101a, three electric connection blocks 102a are fixedly arranged on the electric connection plates 102 in an array along the horizontal direction, the three electric connection blocks 102a are arranged in a one-to-one correspondence manner with the three varistor discs 201, conductive plates 102b are inserted on the outer side walls of the electric connection blocks 102a, one end of each conductive plate 102b positioned at the inner side of the outer protection box 101 is integrally provided with an elastic metal sheet 102b-1 for being attached to each conductive lug 201b-3, and therefore electric conduction between the elastic metal sheet 102b-1 and each conductive lug 201b-3 is achieved, one end of each conductive plate 102b positioned at the outer side of the outer protection box 101 is spirally connected with a conductive bolt 102c, and connection between the conductive bolt 102c and a conductive wire is achieved;
The main contact position of the main contactor is provided with at least one of a temperature sensor, an infrared detection sensor and a current detection sensor, the sensors are electrically connected with the controller 103 through a conducting wire, the temperature sensor and the infrared detection sensor can acquire the temperature value of the main contact in the main contactor when the main contact is electrified, the current detection sensor can acquire the value of the current of the main contact position when the main contact is electrified, the main contact position can be monitored whether surge exists when the main contact is electrified or not through the acquisition of the value, and the monitored value is transmitted to the controller 103 so as to control whether the varistor mechanism 200 performs varistor or not;
the conductive bolts 102c on the two symmetrical electric connection blocks 102a are respectively connected with two ends of a main contact of one phase through conductive wires so as to realize that the varistor 201 and the main contact are connected in parallel, and the connection mode is the prior art means, so that the description is omitted.
In addition, since the surge is a brake that occurs when the current is applied, when the surge exceeds the threshold value, the varistor mechanism 200 performs varistor, but the varistor does not affect the current application, and is prepared for the subsequent next current application.
Example 2
Referring to fig. 4, 6, 7, 8 and 9, a second embodiment of the present invention is based on the previous embodiment, except that the present embodiment is proposed for the convenience of maintenance and replacement of parts of the varistor mechanism 200 by a worker.
Specifically, the I-shaped insulating sleeve 201e is formed by coaxially forming a first T-shaped sleeve 201e-1 and a second T-shaped sleeve 201e-2, wherein a third external thread 201e-4 is formed on the outer side wall of one end of the first T-shaped sleeve 201e-1, and a third internal thread 201e-5 in spiral fit with the third external thread 201e-4 is formed on the inner wall of one end of the second T-shaped sleeve 201 e-2.
Further, a plurality of inserting posts 201e-7 are fixedly arranged on one side surface of the extension part of the first T-shaped sleeve 201e-1 along the circumferential array, meanwhile, insertion holes 201g-1 for sliding insertion of the inserting posts 201e-7 are formed in the varistor disc 201 at one end of the I-shaped groove 201g, the arrangement can achieve limit of matching between the I-shaped insulating sleeve 201e and the I-shaped groove 201g, slipping between the I-shaped insulating sleeve 201e and the varistor disc 201 is avoided, a plurality of third dismounting holes 201e-8 are formed in the extension part of the second T-shaped sleeve 201e-2 along the circumferential array, and the arrangement of the third dismounting holes 201e-8 is convenient for a worker to achieve rotation of the second T-shaped sleeve 201e-2 through a tool.
Referring to fig. 4 and 8 in detail, a first external thread 201b-5 is formed on an outer sidewall of the first insulation column 201b, and a first internal thread 201a-5 in screw fit with the first external thread 201b-5 is formed on an inner portion of one end of the protruding groove 201a, so as to facilitate disassembly and replacement of the first insulation column 201b, and a first disassembly and assembly hole 201b-4 is eccentrically formed on an end surface of the first insulation column 201b, so as to facilitate disassembly and assembly of the first insulation column 201 b;
The outer side wall of the second insulating column 201c is provided with a second external thread 201c-4, and meanwhile, one end inner wall of the convex groove 201a is provided with a second internal thread 201a-6 which is in spiral fit with the second external thread 201c-4, so that the second insulating column 201c is convenient to detach and replace, one end face of the second insulating column 201c is eccentrically provided with a second dismounting hole 201c-3, and the second insulating column 201c is convenient to dismount and mount.
Further, a limit post 201d-1 is fixedly arranged in the middle of one side surface of the first conductive sheet 201d, a limit head 201d-2 is fixedly arranged at the other end of the limit post 201d-1, a limit hole 201e-6 for clearance fit of the limit head 201d-2 is formed in the inner side wall of the I-shaped insulating sleeve 201e, so that the first conductive sheet 201d is fixedly connected, a groove 201a-4 for abutting one end of the second conductive post 201c-1 is formed in one side surface of the first gasket 201a-3, and electric conduction between the first gasket 201a-3 and the second conductive post 201c-1 is realized.
Example 3
Referring to fig. 4, 6 and 10, a third embodiment of the present invention is based on any of the above embodiments, except that the present embodiment is proposed in order to improve heat dissipation of the resistor when handling surge, thereby improving the life span of the resistor.
Specifically, a heat dissipation rod 203 is arranged at the center position of the inner side of the I-shaped insulating sleeve 201e along the axial direction, two ends of the heat dissipation rod 203 are respectively and slidably sleeved with a limiting sleeve 202c, the two limiting sleeves 202c are respectively and fixedly connected to the inner side walls of the two linkage plates 202 through connecting strips 202c-1, and a plurality of heat dissipation fins 203a are fixedly arranged on the side wall of the heat dissipation rod 203 positioned at the inner side of the variable resistance plate 201 along a circumferential array;
When the air-cooling device is used, air can circulate from the middle parts of the varistor disc 201 and the linkage disc 202, and the air can effectively dissipate heat generated in the varistor disc 201 by matching with the arrangement of the radiating fins 203a on the radiating rod 203, so that the service life of the varistor disc is prolonged.
Further, the second mounting grooves 101b are formed in the two end faces of the outer protection box 101 and are coaxial with the heat dissipation rods 203, the dustproof disc 104 is fixedly mounted in the second mounting grooves 101b, the dustproof disc 104 can play a dustproof role, dust is prevented from entering the inner sides of the variable resistance disc 201 and the linkage disc 202, and the service life is prolonged.
Example 4
Referring to fig. 3,4, 5, 11 and 12, a fourth embodiment of the present invention is based on the previous embodiment, except that the specific structure of the adjusting mechanism 300 is described for the convenience of a worker to better implement the present invention.
Specifically, a connection lug 303d is fixedly arranged on one side of the top surface of the movable plate 303, a connection block 303e is fixedly arranged on the other side of the top surface of the movable plate 303, a first I-shaped rod 303b is sleeved on the connection lug 303d in a sliding manner along the horizontal direction, one end of the first I-shaped rod 303b is attached to the inner wall of one side of the matching box 302, a second spring 303b-1 is sleeved on the first I-shaped rod 303b at the position between the matching box 302 and the connection lug 303d in a sliding manner, and the second spring 303b-1 can reset the first I-shaped rod 303 b;
a telescopic groove for sliding and sleeving one end of the second H-shaped rod 303c is formed in the top surface of the connecting block 303e along the vertical direction, a third spring 303c-1 is arranged in the telescopic groove below the second H-shaped rod 303c, the third spring 303c-1 can reset the second H-shaped rod 303c, a sliding groove 302b for clearance fit of the upper end of the second H-shaped rod 303c is formed in the inner top surface of the matching box 302 along the horizontal direction, and limiting guide of movement of the second H-shaped rod 303c can be realized by the arrangement of the sliding groove 302 b;
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 at the position between the first electromagnetic column 302c and the movable plate 303;
A rectangular plate 302e is fixedly arranged on the inner wall of the matching box 302 side at one side of the movable plate 303, the rectangular plate 302e is arranged on one side close to the first electromagnetic column 302c, a guide plate 303f which is attached to the side surface of the rectangular plate 302e is fixedly arranged on the side surface of the movable plate 303 close to the rectangular plate 302e, and the guide plate 303f is arranged on one side close to the first electromagnetic column 302 c;
When the device is used, when resistance changing is needed, the movable plate 303 can be adsorbed through the electrifying of the first electromagnetic column 302c, at this time, the second spring 303b-1 is in a compressed state, then the guide plate 303f is located below the rectangular plate 302e to limit the movement of the movable plate 303, the rotation of the ring gear 301a can be realized, the first electromagnetic column 302c is powered off when the movable plate 303 is fully adsorbed, the second electromagnetic column 302d is electrified at the same time of power off, so that the movable plate 303 d is adsorbed, at the moment, the third spring 303c-1 is in a compressed state, the second spring 303b-1 can release elastic force, the guide plate 303f is limited to move on the rectangular plate 302e, after the second spring 303b-1 completely releases elastic force, the guide plate 303f is moved to the other end of the rectangular plate 302e and is separated, then the guide plate 303f can be moved to the lower side of the rectangular plate 302e again under the action of the elastic force released by the third spring 303c-1, the guide plate 303f can be realized, the guide plate 303f can be moved along the rectangular plate 302e repeatedly, and the movement of the rectangular plate 301a plurality of rings can be realized, and the movement of the movable plate 303 a can be repeatedly rotated according to the requirement.
Further, a fixing plate 302a is fixedly disposed on the top surface of the mating box 302, and the fixing plate 302a is fixedly connected to the inner top surface of the outer protection box 101.
Example 5
The embodiment is a fifth embodiment of the present invention, and the embodiment provides a method for using a switched capacitor contactor, specifically, the switched capacitor contactor is installed and used as follows;
S1, when the power is on, the sensor detects the data of the position of the main contact, when the detected data is within a threshold value, the resistor does not act, and a resistance column 201a-1 in the resistor shares surge when the power is on, so as to protect the capacitor;
s2, when the detected value is out of the threshold value, the controller 103 controls the first electromagnetic column 302c to be electrified to adsorb the movable plate 303, the strip teeth 303a on the movable plate 303 drive the movable ring teeth 301a to rotate, and then the synchronous rotation of the variable resistance discs 201 is realized under the fixation of a screw rod;
s3, through rotation of the varistor 201, the resistance value of the resistor column 201a-1 for electric conduction is correspondingly adjusted, so that current is shared, and the influence of surge on the main contact is ensured to be kept within a threshold value;
In step S2, the movable plate 303 moves around the side wall of the rectangular plate 302e by alternately turning on/off the first electromagnetic column 302c and the second electromagnetic column 302d, so as to realize rapid adjustment of the resistance value.
In addition, the components not described in detail herein are prior art.
It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present applications. Therefore, the application is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (9)
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| CN118099859A (en) * | 2024-04-26 | 2024-05-28 | 河南金源环宇储能技术有限公司 | Connector suitable for AGV power supply system and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE60214666T2 (en) * | 2001-11-29 | 2007-09-13 | Matsushita Electric Works, Ltd., Kadoma | ELECTROMAGNETIC SWITCHING DEVICE |
| JP2012243590A (en) * | 2011-05-19 | 2012-12-10 | Fuji Electric Fa Components & Systems Co Ltd | Electromagnetic contactor |
| SI24060B (en) * | 2012-04-12 | 2017-07-31 | Razvojni Center Enem Novi Materiali D.O.O. | Switch for protection of electric circuit against overload |
| CN204391989U (en) * | 2015-03-13 | 2015-06-10 | 四川会理铅锌股份有限公司 | A stepless variable resistance starting device for a motor |
| KR101585604B1 (en) * | 2015-07-01 | 2016-01-14 | 주식회사 아모텍 | Circuit protection contactor and mobile electronic device with the same |
| CN205984484U (en) * | 2016-07-28 | 2017-02-22 | 苏州寅泽缕弦电子技术有限公司 | Novel automatically regulated's contact resistor |
| CN111082607B (en) * | 2018-10-22 | 2024-09-06 | 株式会社电装 | Electrical contact device and rotating electrical machine comprising an electrical contact device |
| JP6735982B1 (en) * | 2020-03-14 | 2020-08-05 | ▲うぇい▼坊学院 | Deformable computer protection box structure |
| CN220272392U (en) * | 2023-06-26 | 2023-12-29 | 宁波联达绞盘有限公司 | Intelligent contactor |
| CN117276126A (en) * | 2023-09-21 | 2023-12-22 | 西洁微(上海)电子有限公司 | Semiconductor device press mounting mechanism |
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| CN118099859A (en) * | 2024-04-26 | 2024-05-28 | 河南金源环宇储能技术有限公司 | Connector suitable for AGV power supply system and use method thereof |
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