CN111326332A - Self-coupling voltage regulator capable of being used in partition mode - Google Patents
Self-coupling voltage regulator capable of being used in partition mode Download PDFInfo
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- CN111326332A CN111326332A CN201911298994.9A CN201911298994A CN111326332A CN 111326332 A CN111326332 A CN 111326332A CN 201911298994 A CN201911298994 A CN 201911298994A CN 111326332 A CN111326332 A CN 111326332A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
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Abstract
The invention relates to the field of electrical equipment, in particular to an autotransformer which can be used in a partitioned mode, which comprises a voltage regulator shell, a pointer, a dial, a carbon brush, a support, an annular iron core, a wiring panel and a central rotating shaft, wherein the dial is embedded in the upper portion of the voltage regulator shell, and the autotransformer further comprises: segmented coils and a change-over switch. The controller takes the leading-out points of different segment coils as the leading-in points of the power supply, so that the output range of the segment coils can be adjusted. The invention has the advantages of simple structure, automatic control and effective prolonging of the service life of the voltage regulator.
Description
Technical Field
The invention relates to the field of electrical equipment, in particular to an autotransformer capable of being used in a partitioned mode.
Background
The voltage regulator and the transformer have similar functions and are voltage conversion equipment, and the difference between the voltage regulator and the transformer is that the secondary end of the voltage regulator has the function of continuously adjusting voltage output.
The traditional voltage regulator mainly comprises a voltage regulator shell, a knob, a pointer, a dial, a carbon brush, a support, an annular iron core, a wiring panel and a central rotating shaft, wherein a coil winding is wound on the annular iron core. The upper surface of the coil winding is provided with a polished surface which is used for realizing the contact with the carbon brush so as to achieve the function of regulating voltage. The pointer and the dial are used for indicating the voltage value. The wiring panel is used for connecting an external power supply and the internal coil winding.
In a rural power supply and distribution system, because the voltage loss of a long-distance transmission line is serious, a power supply end often cannot reach a preset voltage, and a voltage regulator is adopted for voltage stabilization. In the electrical test process, the power distribution station is internally provided with equipment with different voltage grades, so that different voltages are needed for supplying power to the equipment, and the voltage regulator can play an important role. In the above application, although the output of the voltage regulator is from 0 to the maximum value, the voltage output value applied in the actual process is only within a certain small range. If the sliding device is frequently used in a sliding mode between 110 and 120 volts, under the condition of long-term use, the frequently used part is seriously abraded, and the equipment is burnt out. Even if the other parts are intact, they cannot be used.
The patent application No. 201310191322.4 discloses a carbon brush contact type self-coupling alternating current voltage regulator based on a segmented variable cross-section winding, which aims to solve the problem of coil abrasion. The method solves the problem that the cables with different cross sections are wound at different positions of a coil, and the heating phenomenon caused by uneven current is caused due to different thicknesses of cable cores.
An improved ring regulator of application No. 200620114970.5, which is a regulator designed in the form of a double winding, with a large voltage range being set as an inner winding and a small range of regulated voltage being designed as an outer winding for contact with the carbon brushes. The problem to be solved is to elastically manufacture the external coil winding according to the selected voltage output range, so that the cost is saved.
Both of the above patents still do not address the problem of excessive wear of the local coil leading to a reduction in its useful life. Therefore, it is an urgent requirement to design a voltage regulator capable of preventing the coil from being excessively worn and prolonging the service life.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: an autotransformer for use in a divided mode is provided, in which the output voltage range of a certain section can be changed.
The technical scheme of the technical problem to be solved by the invention is as follows: the utility model provides an auto voltage regulator that can use by zoning, includes voltage regulator casing, carbon brush and support, annular iron core, wiring panel, central pivot, its characterized in that: further comprising:
at least two sets of segmented coils: the head and the tail are adjacently wound on the annular iron core; the segmented coil comprises an adjusting coil and a communication coil which are wound in the same direction;
the switching relays with the same number as the breaking coils: the switching relay is arranged on the wiring panel and is provided with two groups of normally open and normally closed contacts;
a switch is switched: the coil winding of the switching relay is connected in series and then is connected to two ends of a power supply in parallel;
the switching switch, the switching relay and the connecting coil are correspondingly arranged in groups, two normally closed contacts of the switching relay are electrically connected with two leading-out points of the connecting coil, two normally open contacts of the switching relay are respectively connected with a zero-live wire of a power supply, two leading-out points of the adjusting coil adjacent to the connecting coil are electrically connected with two common contacts of the switching relay, and all the switching relays are connected with the connecting coil, the adjusting coil and the zero-live wire of the power supply in the same sequence; the width of the interconnection coil is larger than that of the carbon brush.
Preferably, the pressure regulating device further comprises a dial, and the dial is detachably connected with the upper portion of the pressure regulating shell. The upper part of the shell of the voltage regulator is provided with a positioning groove corresponding to the position of the contact coil, the change-over switch is arranged in the positioning groove, the dial is provided with positioning bulges corresponding to the positioning groove, one of the positioning bulges corresponds to the code-free area of the dial, and the change-over switch is triggered by a trigger module; the lower part of the dial is provided with a limiting pile, and the limiting pile corresponds to the code-free area; the connecting line of the two ends of the limiting pile positioned on the circumferential direction of the central rotating shaft and the end part of the connecting coil on the same side passes through the axis line of the central rotating shaft; the central rotating shaft is provided with a limiting stop needle, the length of the limiting stop needle is greater than the distance from the limiting pile to the axis of the central rotating shaft, and the length of the limiting stop needle is greater than the distance from the limiting pile to the dial;
alternatively, the first and second electrodes may be,
the carbon brush and the upper portion of the support are provided with limiting blocking needles, the limiting blocking needles and the limiting piles are located on the same circumference, and the length of each limiting blocking needle is larger than the length of the upper end of each limiting pile from the dial scale.
Better, still include stop device and spacing fender needle, stop device includes:
limiting the sleeve: the position of the connecting coil is arranged correspondingly, and the connecting coil is fixedly connected with the inner wall of the shell of the voltage regulator;
electromagnet: the limiting sleeve is arranged at one end close to the shell or the dial of the voltage regulator inside the limiting sleeve; the coil winding of the electromagnet is connected in parallel with the coil winding of the corresponding switching relay at the corresponding position;
a slide rail: the limiting sleeve is embedded at one end of the limiting sleeve, which is far away from the shell of the voltage regulator or the dial, and is provided with a sliding hole which is coaxial with the limiting sleeve;
push rod: the permanent magnet is embedded in the center of one end of the limiting sleeve positioned in the sliding hole of the sliding rail in an inserted manner, and the outer edge is arranged at the periphery of the limiting sleeve; a limiting pile is arranged at one end outside the limiting sleeve, and the connecting line of the two ends of the limiting pile and the end part of the connecting coil at the same side passes through the axis line of the central rotating shaft;
the limiting blocking needle is arranged on the central rotating shaft and vertically overlapped with the carbon brush and the support, and when the limiting sleeve is horizontally arranged, the length of the limiting blocking needle is greater than the distance from the limiting pile to the axis of the central rotating shaft when the push rod is ejected; when the limiting sleeve is vertically arranged, the length of the limiting stop needle from the top end of the limiting sleeve is smaller than the length of the lower end of the limiting pile from the top end of the limiting sleeve when the push rod is ejected out; the change over switch is arranged on the wiring panel, the wiring panel is further provided with a liquid crystal display and a controller, and the controller collects the output voltage of the voltage regulator and displays the output voltage on the liquid crystal display.
Better, still include stop device and spacing fender needle, stop device includes:
limiting the sleeve: the position of the connecting coil is arranged correspondingly, and the connecting coil is fixedly connected with the inner wall of the shell of the voltage regulator;
electromagnet: the limiting sleeve is arranged at one end close to the shell or the dial of the voltage regulator inside the limiting sleeve; the coil winding of the electromagnet is connected in parallel with the coil winding of the corresponding switching relay at the corresponding position;
a slide rail: the limiting sleeve is embedded at one end of the limiting sleeve, which is far away from the shell of the voltage regulator or the dial, and is provided with a sliding hole which is coaxial with the limiting sleeve;
push rod: the permanent magnet is embedded in the center of one end of the limiting sleeve positioned in the sliding hole of the sliding rail in an inserted manner, and the outer edge is arranged at the periphery of the limiting sleeve; a limiting pile is arranged at one end outside the limiting sleeve, and the connecting line of the two ends of the limiting pile and the end part of the connecting coil at the same side passes through the axis line of the central rotating shaft;
the limiting blocking needle is arranged on the carbon brush and the upper part of the support, the limiting blocking needle and the limiting pile when the push rod is popped out are positioned on the same circumference, and when the limiting sleeve is horizontally arranged, the distance from the limiting blocking needle to the central rotating shaft is greater than the distance from the limiting pile to the axis of the central rotating shaft when the push rod is popped out; when the limiting sleeve is vertically arranged, the length of the limiting stop needle from the top end of the limiting sleeve is smaller than the length of the lower end of the limiting pile from the top end of the limiting sleeve when the push rod is ejected out; the change over switch is arranged on the wiring panel, the wiring panel is further provided with a liquid crystal display and a controller, and the controller collects the output voltage of the voltage regulator and displays the output voltage on the liquid crystal display.
Preferably, two ends of the limiting pile are provided with proximity switches.
Preferably, the device is also provided with a driving motor and a driving circuit, wherein the driving motor is arranged on the dial or the shell of the voltage regulator, drives the central rotating shaft to rotate, and is electrically connected with the controller through the driving circuit; the wiring panel is provided with a key, and the key is electrically connected with the controller.
A method for adjusting a commonly used area of an autotransformer which can be used in a divisional manner comprises the following steps:
and 3, re-fixing the connection between the dial and the shell of the pressure regulator.
Preferably, the change-over switch is a relay, a coil winding of the change-over switch is electrically connected with the controller, and a normally open contact of the change-over switch is connected with the coil winding of the change-over relay in series; the method for adjusting the output range of the segmented coil comprises the following steps:
through key selection, setting an adjusted position by combining a liquid crystal display, or starting switching when a controller detects that the use time reaches a set value; the controller controls the corresponding change-over switch to be closed, after the change-over switch is closed, the change-over relay corresponding to the change-over switch is electrified, and the electrified change-over relay has the function of connecting the connected segmented coil with the power supply; the uncharged switching relay plays a role in connecting the segment coils, specifically: the connection coil corresponding to the change-over switch is separated from the adjustment area, and the leading-out points of the two adjacent adjustment coils of the connection coil corresponding to the change-over switch are power supply leading-in end points of the voltage regulator coil winding; the other adjusting coils and the connecting coil form a complete adjusting area; the coil winding of the switching relay is connected with the coil winding of the electromagnet in series, and the push rod of the limiting device corresponding to the connection coil connected with the switching relay is popped up, so that the rotating position of the carbon brush is limited.
Preferably, when the limiting blocking needle rotates to the two ends of the limiting pile, the proximity switch is triggered, the controller is electrically connected with the proximity switch, the controller stops driving the motor to rotate after receiving signals of the proximity switch, and meanwhile, the switching relay is disconnected to stop outputting voltage.
Preferably, the control method of the step voltage output comprises: setting an increase key and a decrease key, wherein after the increase key is pressed down, the controller controls the driving motor to rotate to the maximum scale, and then the output voltage is increased; after the reduction button is pressed, the controller controls the driving motor to rotate towards the zero scale, and then the output voltage is reduced.
The invention has the beneficial effects that:
the automatic control type voltage regulator has the advantages of simple structure and automatic control, and the service life of the automatic coupling voltage regulator is effectively prolonged by switching the range of the output voltage of the breaking coil.
Drawings
FIG. 1 is a schematic diagram of a main structure of an embodiment of the present invention
FIG. 2 is a schematic view of a dial of an embodiment of the present invention
FIG. 3 is an electrical control schematic of a segmented coil in accordance with an embodiment of the invention
FIG. 4 is a schematic representation of another embodiment of the present invention
FIG. 5 is a schematic view of a position limiting device according to an embodiment of the present invention
FIG. 6 is a schematic diagram of a control circuit of a position limiting device according to an embodiment of the present invention
FIG. 7 is a schematic diagram of an electrical connection according to an embodiment of the present invention
FIG. 8 is a diagram of a coil assembly and circuit configuration according to an embodiment of the present invention
In the figure:
1. limiting piles; 2. a limiting needle is blocked; 4. a segment coil; 5. a switch; 54. a fourth changeover switch; 53. a third changeover switch; 52. a second changeover switch; 51. a first changeover switch; 59. a controller; 55. a drive circuit; 56. a drive motor; 38. a push rod; 36. an electromagnet; 41. adjusting the coil; 95. an annular iron core; 94. carbon brushes and a bracket; 92. a pointer; 96. a wiring panel; 30. a permanent magnet; 37. a slide rail; 35. a limiting sleeve; 97. a central rotating shaft; 42. a communication coil; 98. a code-free region; 93. a dial scale; 90. a voltage regulator housing; KL, switching relay; 422. a second contact exit; 421. a first contact exit; 411. a first exit point; 412. a second lead-out point; KL4, a fourth switching relay; KL3, third switching relay; KL2, a second switching relay; KL1, a first switching relay; 931. positioning the projection; 901. a positioning groove;
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
The invention relates to an autotransformer which can be used in a partitioned mode, wherein a coil winding of the autotransformer is improved on the basis of a traditional voltage regulator, and an auxiliary mechanism suitable for the coil winding is arranged in a matched mode.
Example one
As shown in fig. 1, the conventional voltage regulator mainly includes a voltage regulator housing 90, a dial 93, a pointer, a carbon brush, a support 94, an annular iron core 95, a wiring panel 96, and a central rotating shaft 97, wherein a coil winding is wound on the annular iron core 95, and a polished surface is provided on an upper surface of the coil winding, and the polished surface is used for achieving a function of adjusting voltage by contacting with the carbon brush.
As shown in fig. 2, in the present invention, a coil separately wound on an annular core 95 in the prior art is arranged such that a plurality of groups of segment coils 4 are wound on the annular core 95 end to end, in order to ensure the continuity of voltage and the same winding direction of all coils. At least two groups of segment coils 4 are arranged, and the segment coils 4 comprise adjusting coils 41 and connecting coils 42 which are wound in the same direction. Four sets of segmented coils 4 are provided in this embodiment as shown in fig. 2. All the segment coils 4 are wound in the same direction, have the same number of turns, and are uniformly and closely distributed on the annular iron core 95.
In the conventional voltage regulator, in order to prevent the carbon brush from sliding to the end point and causing short circuit, a notch is provided on the voltage regulator, as shown in fig. 8, a dial 93 is provided with a non-code area 98 at one end, and an annular iron core 95 has no coil winding corresponding to the non-code area and is provided with a protrusion for preventing the carbon brush from exceeding the limit. In this embodiment, the communication coil 42 functions to prevent a short circuit from occurring when the carbon brush moves to the end point. The connection coil 42 is used for connecting the adjusting coil 41 and disconnecting the adjusting coil 41, when the adjusting coil 41 is disconnected, the connection coil 42 is independent and is not used as a part of voltage regulation of the voltage regulator, so the connection coil is not electrified, the connection coil 42 is positioned in the area corresponding to the non-code area 98, and the lead ends of the adjacent adjusting coils 41 at the two ends of the connection coil are used as a starting point and an end point of output of the adjusting voltage, namely zero scale and maximum scale. The control coil 41 as an essential component of the segment coil 4 effects the control of the voltage. Each segment of the adjusting coil 41 has a certain output range, and the output range of each segment of the adjusting coil 41 can be changed by arranging the non-code area 98 in the corresponding position of different communication coils 42. And further, the voltage of the common output range can be switched to be output in different sections. And further the service life of the voltage regulator can be prolonged.
In the invention, the clockwise direction is taken as a reference, the adjusting coil 41 and the connecting coil 42 are mutually spaced and are closely connected at the head end and the tail end, in the clockwise direction, two leading-out points of the adjusting coil 41 are respectively a first adjusting leading-out point 411 and a second adjusting leading-out point 412, and two leading-out points of the connecting coil 42 are respectively a first connecting leading-out point 421 and a second connecting leading-out point 422.
In order to switch the output ranges of the different segment coils 4, a switching relay KL is provided. The switching relay KL is provided on the junction panel 96 or on a circuit board of the junction panel 96. The switching relay is provided with two groups of normally open and normally closed contacts. The number of the switching relays is the same as the number of the segment coils 4, while corresponding to the segment coils 4 one to one.
In order to control the switching relays KL, a selector switch 5 is provided for each switching relay KL. The change-over switch is connected in series with a coil winding of the switching relay KL and then connected to a zero line and a live line of a power supply in parallel. The switch 6 and the switching relay connected in series correspond to the same interconnection coil 42. As shown in fig. 8, the adjacent leading points of the connection coil 42 and the adjustment coil 41 are connected to the same set of contacts of the switching relay, wherein the leading point of the adjustment coil 41 is connected to the common contact, the leading point of the connection coil 42 is connected to the normally closed contact, and the normally open contacts of the two sets of contacts of the switching relay KL are connected to the zero-live line of the power supply. In order to keep the voltage regulator operating stably and reliably, the connection sequence of the leading-out point of the interconnection coil 42, the zero-live line of the power supply and the contact point of the switching relay KL is the same. In order to prevent the carbon brush from causing a short circuit when it is moved to the end, i.e., to the zero scale and the maximum scale, the width of the interconnection coil 42 is greater than the width of the carbon brush, so that a short circuit does not occur when it is slid to the end point.
As shown in fig. 3, four sets of segment coils 4 are taken as an example. Correspondingly, the number of the switching relays KL is four, the switching relays KL are respectively a first switching relay KL1, a second switching relay KL2, a third switching relay KL3 and a fourth switching relay KL4, the number of the switching switches is four, the switching switches are respectively a first switching switch 51, a second switching switch 52, a third switching switch 53 and a fourth switching switch 54, the first switching relay KL1 and the first switching switch 51 correspond to the same interconnection coil 42, and the rest of the switching relays and the switching switches 5 correspond to each other in sequence according to sequence numbers. The coil winding of the first switching relay KL1 and the first switching switch 51 are connected in parallel to the zero line and the hot line of the power supply after penetrating. The switching relay is provided with two groups of normally open and normally closed contacts. The first and second contact outlets 421 and 422 of the two contact points of the interconnection coil 42 are respectively connected to two normally closed contacts of the switching relay KL. In the clockwise direction, the two leading points of the adjusting coil 41 connected to the interconnection coil 42 are a second leading point 412 and a first leading point 411, respectively, and the first and second leading points 411, 412 are electrically connected to two common contacts of the switching relay, respectively. The leading-out points of the four groups of segmented coils 4 are connected with the normally closed contacts and the common contacts of the four switching relays in the same sequence. As shown in fig. 8, a complete coil winding is now formed in the entire toroidal core 95.
If the dial 93 is a code-sprayed dial, the position of the dial 93 needs to be adjusted when the output range of the segment coil 4 is changed. The upper part of the pressure regulator casing 90 is detachably connected with the dial 93. In the prior art, a notch is formed in the inner periphery of the upper portion of the regulator housing 90, and the dial 93 is embedded in the notch.
A positioning groove 901 is provided at a position corresponding to the interconnection coil 42 on the upper portion of the edge of the notch of the regulator case 90, and the changeover switch 5 is provided inside the positioning groove 901. The dial 93 is provided with a positioning protrusion 931 at a position corresponding to the positioning groove 901. One of the positioning protrusions 931 corresponds to the code-free area 98 of the dial 93, and a trigger module is provided to trigger the switch 5. Therefore, the connection coil 42 corresponding to the protrusion provided with the trigger module is a coil out of the voltage regulation range, that is, the connection coil 42 is not electrified, and the ends of the two adjacent adjustment coils 41 are respectively a zero scale point and a maximum scale point.
The changeover switch 5 may be a proximity switch or a travel switch. The proximity switch has various types, including an inductive type and a vortex type, and when the vortex type proximity switch is adopted, the trigger module is a metal iron block. If the trigger module is a travel switch, the trigger module can be arranged as a bump. The projection may trigger the travel switch, and the positioning protrusion 931 without the projection does not trigger the travel switch. In order to ensure safety and reliability, a contact type travel switch, such as a travel switch with the model number LX19, is adopted.
In order to prevent misoperation, the lower part of the dial 93 is provided with a limiting pile 1, and the limiting pile 1 corresponds to the code-free area 98; the connection line between the two ends of the limiting pile 1 positioned on the circumference direction of the central rotating shaft 97 and the end part of the connecting coil 42 on the same side passes through the axis line of the central rotating shaft. Meanwhile, the central rotating shaft 97 or the carbon brush and the support 94 are provided with the limiting stop needle 2, and the limiting stop needle 2, the carbon brush and the support are overlapped up and down to limit the sliding range of the carbon brush.
When the central rotating shaft 97 is provided with the limiting blocking needle 2, the length of the limiting blocking needle 2 is greater than the distance between the limiting pile 1 and the axis of the central rotating shaft 97, and the lower end of the limiting blocking needle 2 is higher than the lower end of the limiting pile 1.
When the carbon brush and the upper part of the bracket 94 are provided with the limiting stop pins 2, the limiting stop pins 2 and the limiting piles 1 are positioned on the same circumference. The upper end of the limit stop needle 2 is higher than the lower end of the limit pile 1.
In this case, the method of adjusting the output range of the segment coil 4 is:
After the dial is rotated, the positioning groove 901 is disengaged from the positioning protrusion 931, and when the positioning groove 901 is engaged with the positioning protrusion 931 again, the code-free area 98 of the dial 93 is switched from the original corresponding positioning mark to a new positioning mark.
After the switch is switched to a new position, the corresponding switch of the code-free area 98 triggers the corresponding switch relay to act. At this time, the charged switching relay separates the connection coil 42 corresponding to the code-free zone, and connects the lead points of the two adjustment coils 41 adjacent to the connection coil 42 to the zero line of the power supply.
At this time, the output voltage of each segment coil 4 changes. If the common output range is 110-150V, the voltage output by the new segmented coil 4 is 110-150V, so that the abrasion of the last coil with the output voltage of 110-150V can be reduced, and the service life of the voltage regulator is prolonged.
Step 3, re-fixing the connection of the dial 93 and the regulator housing 90.
Example two
Based on the structure of the first embodiment, the dial 93 serves as a cover plate on the upper portion of the regulator housing 90, and the wiring panel is disposed on the regulator housing or on the dial. The wiring panel or the dial is provided with keys, a liquid crystal display and a controller, so that the dial can be provided with no pointer or scale. The controller collects the output voltage of the voltage regulator and displays the output voltage on the liquid crystal display, and meanwhile, the controller adjusts the working state of the voltage regulator through the input of the key. As shown in fig. 7, the voltage and current acquisition can be realized by setting the voltage transformer YT and the current transformer LH, and the technology for acquiring the voltage and current through the microcomputer relay protection device in the field of electrical metering is very mature and is not described herein again. Besides, the device also comprises a limiting device and a limiting stop needle 2.
Stop device includes: a limiting sleeve 35, an electromagnet 36, a slide rail 37, a push rod 38 and a limiting pile 1.
The limiting sleeve 35 is tubular, the limiting sleeve 35 is arranged corresponding to the position of the contact coil 42, namely the limiting sleeve 35 is arranged in a sector area formed by two ends of the contact coil and the circle center. The limit sleeve 35 may be fixedly connected to the underside of the dial 93 or to the side wall of the regulator housing 90. When the pressure regulator is fixedly installed, the axis of the limiting sleeve 35 can be a dial surface, and the latter pressure regulator shell side wall is vertical.
The electromagnet 36 is arranged at one end, close to the voltage regulator shell 90 or the dial 93, in the limiting sleeve 35; the length direction of the iron core of the electromagnet 36 coincides with the axial direction of the limit sleeve 35. As shown in fig. 6, the coil winding of the electromagnet 36 is connected in parallel with the coil winding of the switching relay KL corresponding to the interconnection coil 42 located at the position of the limit sleeve 35.
The slide rail 37 is embedded in one end of the limiting sleeve 35 far away from the regulator housing 90 or the dial 93, and is provided with a slide hole coaxial with the limiting sleeve 35.
The push rod 38 is inserted into the slide hole of the slide rail 37. The center of one end of the push rod 38 positioned in the limiting sleeve 35 is embedded with a permanent magnet 30, and the periphery is provided with an outer folded edge; and one end positioned outside the limiting sleeve 35 is provided with a limiting pile 1. The outside folded edge is used to prevent the push rod 38 from slipping out of the slide hole. The permanent magnet is matched with the electromagnet 36, and when the electromagnet 36 is electrified, the opposite surface of the electromagnet and the permanent magnet generates repulsive force to push the push rod 38 out. The connecting line of the two ends of the limiting pile 1 and the end part of the connecting coil 42 on the same side passes through the axis line of the central rotating shaft. The limiting pile 1 is in a long strip shape or an arc shape, and the middle part of the limiting pile 1 is fixedly connected with the lower end of the push rod 38.
When the limit stopper needle 2 is arranged on the central rotating shaft 97: if the position limiting sleeve 35 is disposed on the sidewall of the regulator housing 90, the position limiting sleeve 35 is disposed horizontally. At the moment, the length of the limiting stop needle 2 is greater than the distance from the limiting pile 1 to the axis of the central rotating shaft 97 when the push rod 38 is ejected; if the limiting sleeve 35 is arranged on the dial 93 or on the lower part of the upper panel of the voltage regulator casing 90, namely the limiting sleeve 35 is vertically arranged, the length of the limiting needle 2 from the top end of the limiting sleeve 35 is smaller than the length of the lower end of the limiting pile 1 from the top end of the limiting sleeve 35 when the push rod 38 is ejected out.
When the limit stopper needle 2 is arranged on the upper part of the carbon brush and the bracket 94: the limit stop needle 2 and the limit pile 1 are positioned on the same circumference when the push rod 38 is ejected. If the position limiting sleeve 35 is disposed on the sidewall of the regulator housing 90, the position limiting sleeve 35 is disposed horizontally. At the moment, the length of the limiting stop needle 2 from the central rotating shaft 97 is greater than the distance of the limiting pile 1 from the axis of the central rotating shaft 97 when the push rod 38 is ejected; if the limiting sleeve 35 is arranged on the dial 93 or on the lower part of the upper panel of the voltage regulator casing 90, namely the limiting sleeve 35 is vertically arranged, the length of the limiting needle 2 from the top end of the limiting sleeve 35 is smaller than the length of the lower end of the limiting pile 1 from the top end of the limiting sleeve 35 when the push rod 38 is ejected out.
Preferably, a drive motor 56 and a drive circuit 55 are provided to achieve automatic adjustment. The driving motor 56 is disposed on the dial 93 or the regulator housing 90, and the driving motor 56 drives the central shaft 97 to rotate. The rotating shaft of the driving motor 56 can be linked with the central rotating shaft 97 by a gear or belt transmission mode. The drive motor 56 is electrically connected to the controller 59 via the drive circuit 55. A stepper motor or servo motor may be used for driving to increase the accuracy of the adjustment. For adjustment purposes, the dial 93 or the terminal panel 96 is provided with keys which are electrically connected to the controller 59.
Preferably, in order to detect the position of the carbon brush and calibrate the initial position, proximity switches are arranged at two ends of the limiting pile 1. After the output range of the segmented coil 4 is adjusted by the switch 5, the zero scale and the maximum scale of the coil winding for voltage regulation output are changed. If the adjustment is performed automatically through the driving motor 56, the zero scale and the maximum scale can be marked when the proximity switches on the two sides of the limiting pile 1 are detected, so that a basis is provided for the adjustment of the voltage in the next step.
Further, in order to realize automatic control, the change-over switch 5 is a switch tube of a relay. The changeover switch 5 is electrically connected with the controller. The controller 59 may be a plc module or a control module using a single chip microcomputer as a microprocessor. When the change-over switch 5 is a relay, the coil winding of the device is electrically connected with the controller, and when the change-over switch 5 is a switch tube, the base electrode or the control electrode is electrically connected with the controller 59, so as to realize automatic control. When the switch 5 is a relay, a normally open contact of the switch is connected with a coil winding of the switching relay in series; when the switch 5 is a switch tube, the coil winding of the switch 5 is connected in series with the coil winding of the switching relay.
As shown in fig. 7 and 8, the segment coils 4 are provided in four groups. Correspondingly, the number of the switching relays is four, namely a first switching relay KL1, a second switching relay KL2, a third switching relay KL3 and a fourth switching relay KL4, the number of the switching switches 5 is four, namely a first switching switch 51, a second switching switch 52, a third switching switch 53 and a fourth switching switch 54, the number of the corresponding limiting devices is four, namely four electromagnets 36 are arranged, namely a first electromagnet 361, a second electromagnet 362, a third electromagnet 363 and a fourth electromagnet 364, wherein the first switching relay KL1, the first switching switch 51 and the first electromagnet 361 correspond to the same interconnection coil 42, other switching relays, the switching switches and the electromagnets correspond in sequence according to serial numbers, namely four groups of control modules are provided, and each group comprises a segment coil, a switching switch, an electromagnet and a switching switch. Taking a relay as an example of the changeover switch, the coil windings of the first, second, third, and fourth changeover switches are electrically connected to the controller 59. The normally open contact of the first changeover switch 51 and the coil winding of the first changeover relay KL1 are electrically connected in series to the power supply module 50. The input of the power module 50 is electrically connected to the zero line of the power supply. The first electromagnet 361 and the coil winding of the first switching relay KL1 are connected in parallel. The wiring modes of the other three groups of switching relays, the switching switches and the electromagnets are the same as the wiring mode of the first group. The connection mode of the switching relay and the segmented coil 4 is the same as that of the first embodiment.
In this case, the method of adjusting the output range of the segment coil 4 is:
through key selection, or the controller starts switching when detecting that the use time reaches a set value;
the controller controls the corresponding change-over switch to be closed, after the change-over switch is closed, the non-electrified change-over relay plays a role in connecting the sectional coil 4, and the electrified change-over relay plays a role in connecting the connected sectional coil 4 with a power supply;
the coil winding of the switching relay is connected with the coil winding of the electromagnet in series, and the push rod of the limiting device corresponding to the connection coil 42 connected with the switching relay is popped up, so that the rotating position of the carbon brush is limited.
The invention introduces the power supply from different positions of the coil winding, thereby realizing the change of the voltage regulation range on the coil.
A. The adjusted position is set in combination with the liquid crystal display through key selection, or the controller starts switching when detecting that the use time reaches a set value. The use time can be set, and the switching is started when the use time reaches the set use time.
B. The controller controls the corresponding change-over switch 5 to be closed, after the change-over switch 5 is closed, the change-over relay KL corresponding to the change-over switch is electrified, and the electrified change-over relay has the function of connecting the connected segmented coil 4 with a power supply; the uncharged switching relay functions to connect the segment coil 4, specifically:
the connection coil 42 corresponding to the change-over switch 5 is separated from the adjusting area, and the leading-out points of the two adjusting coils 41 adjacent to the connection coil 42 corresponding to the change-over switch 5 are power supply leading-in end points of the voltage regulator coil winding; the other adjustment coils 41 and the tie coil 42 form the complete adjustment region.
Meanwhile, the coil winding of the switching relay is connected with the coil winding of the electromagnet in series, and the push rod of the limiting device corresponding to the connection coil 42 connected with the switching relay is popped up, so that the rotating position of the carbon brush is limited.
C. When the limiting stop needle 2 rotates to the two ends of the limiting pile 1, the proximity switches at the two ends of the limiting pile are triggered. Wherein the controller is electrically connected to the proximity switch, and the controller stops driving the motor 56 to rotate after receiving the signal from the proximity switch, and simultaneously disconnects the switching relay to stop outputting the voltage.
D. Step-by-step voltage output:
an increase key and a decrease key are set,
after the increase button is pressed, the controller controls the driving motor 56 to rotate to the maximum scale, and then the output voltage increases.
After the decrease button is pressed, the controller controls the driving motor 56 to rotate towards the zero scale, and then the output voltage decreases.
The driving motor 56 can be a stepping motor or a servo motor, and the driving motor rotates a certain angle every time a key is pressed, so that the output voltage changes within a certain range, such as increasing or decreasing 0.1 v.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and various changes and modifications can be made by workers in the light of the above description without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an autotransformer that can use by zone, includes voltage regulator casing (90), carbon brush and support (94), annular iron core (95), wiring panel (96), central pivot (97), its characterized in that: further comprising:
at least two sets of segmented coils (4): the head and the tail are adjacently wound on the annular iron core (95); the segment coil (4) comprises an adjusting coil (41) and a communication coil (42) which are wound in the same direction;
switching relays (KL) having the same number as the number of the breaking coils (4): the switching relay (KL) is provided with two groups of normally open and normally closed contacts;
switch (5): is connected in series with a coil winding of a switching relay (KL) and then is connected at two ends of a power supply in parallel;
the switching relay comprises a switching switch (5), a switching relay (KL) and a communication coil (42) which are correspondingly arranged in a group, wherein two normally closed contacts of the switching relay (KL) are electrically connected with two leading-out points of the communication coil (42), two normally open contacts of the switching relay (KL) are respectively connected with a zero-fire line of a power supply, two leading-out points of an adjusting coil (41) adjacent to the communication coil (42) are electrically connected with two common contacts of the switching relay, and the wiring sequence of all the switching relays (KL) is the same as that of the communication coil (42), the adjusting coil (41) and the zero-fire line of the power supply which correspond to the switching relays;
the width of the interconnection coil (42) is greater than the width of the carbon brush.
2. A sectionally usable autotransformer as claimed in claim 1, comprising a dial (93), said dial (93) being removably connected to an upper portion of the regulator housing (90), characterized in that:
a positioning groove (901) is formed in the upper portion of the voltage regulator shell (90) corresponding to the position of the interconnection coil (42), the change-over switch (5) is arranged inside the positioning groove (901), a positioning protrusion (931) is arranged in the position, corresponding to the positioning groove (901), of the dial (93), one positioning protrusion (931) corresponds to the code-free area (98) of the dial (93), and a trigger module is arranged for triggering the change-over switch (5);
the lower part of the dial (93) is provided with a limiting pile (1), and the limiting pile (1) corresponds to the code-free area (98); the connecting line of the two ends of the limiting pile (1) positioned in the circumferential direction of the central rotating shaft and the end part of the connecting coil (42) at the same side passes through the axial lead of the central rotating shaft;
the central rotating shaft (97) is provided with a limiting stop needle (2), the length of the limiting stop needle (2) is greater than the distance from the limiting pile (1) to the axis of the central rotating shaft (97), and the length of the limiting stop needle (2) is greater than the distance from the limiting pile (1) to the dial (93);
alternatively, the first and second electrodes may be,
the carbon brush and support (94) upper portion is equipped with spacing needle (2), and spacing needle (2) and spacing stake (1) are in on same circumference, the length of spacing needle (2) is greater than the length of the upper end distance calibrated scale (93) of spacing stake (1).
3. The sectionally usable autotransformer of claim 1, wherein:
also comprises a limiting device and a limiting stop needle (2),
the stop device includes:
limiting sleeve (35): the position of the connecting coil (42) is arranged correspondingly, and the connecting coil is fixedly connected with the inner wall of the voltage regulator shell (90);
electromagnet (36): the limiting sleeve is arranged at one end, close to the shell (90) of the voltage regulator or the dial (93), in the limiting sleeve (35); the coil winding of the electromagnet (36) is connected in parallel with the coil winding of the corresponding switching relay (KL) at the corresponding position;
slide rail (37): the limiting sleeve is embedded at one end of the limiting sleeve (35) far away from the pressure regulator shell (90) or the dial (93), and is provided with a sliding hole coaxial with the limiting sleeve (35);
push rod (38): the permanent magnet (30) is embedded in the center of one end of the limiting sleeve (35) and is inserted into the sliding hole of the sliding rail (37), and the outer edge is arranged on the periphery of the limiting sleeve; one end positioned outside the limiting sleeve (35) is provided with a limiting pile (1), and a connecting line between the two ends of the limiting pile (1) and the end part of the interconnection coil (42) on the same side passes through the axial lead of the central rotating shaft (97);
the limit stop needle (2) is arranged on the central rotating shaft (97) and is overlapped with the carbon brush and the bracket (94) up and down,
when the limiting sleeve (35) is horizontally arranged, the length of the limiting stop needle (2) is greater than the distance from the limiting pile (1) to the axis of the central rotating shaft (97) when the push rod (38) is ejected; when the limiting sleeve (35) is vertically arranged, the length of the limiting stop needle (2) from the top end of the limiting sleeve (35) is smaller than the length of the lower end of the limiting pile (1) from the top end of the limiting sleeve (35) when the push rod (38) is ejected;
change over switch (5) are located on wiring panel (96), still be equipped with LCD and controller on wiring panel (96), output voltage of voltage regulator is gathered and is shown on LCD to controller (59).
4. The sectionally usable autotransformer of claim 1, wherein:
also comprises a limiting device and a limiting stop needle (2),
the stop device includes:
limiting sleeve (35): the position of the connecting coil (42) is arranged correspondingly, and the connecting coil is fixedly connected with the inner wall of the voltage regulator shell (90);
electromagnet (36): the limiting sleeve is arranged at one end, close to the shell (90) of the voltage regulator or the dial (93), in the limiting sleeve (35); the coil winding of the electromagnet (36) is connected in parallel with the coil winding of the corresponding switching relay (KL) at the corresponding position;
slide rail (37): the limiting sleeve is embedded at one end of the limiting sleeve (35) far away from the pressure regulator shell (90) or the dial (93), and is provided with a sliding hole coaxial with the limiting sleeve (35);
push rod (38): the permanent magnet (30) is embedded in the center of one end of the limiting sleeve (35) and is inserted into the sliding hole of the sliding rail (37), and the outer edge is arranged on the periphery of the limiting sleeve; one end positioned outside the limiting sleeve (35) is provided with a limiting pile (1), and a connecting line between the two ends of the limiting pile (1) and the end part of the interconnection coil (42) on the same side passes through the axial lead of the central rotating shaft (97);
the limit stop needle (2) is arranged at the upper part of the carbon brush and the bracket (94),
the limiting needle (2) and the limiting pile (1) when the push rod (38) is popped up are positioned on the same circumference, and when the limiting sleeve (35) is horizontally arranged, the distance from the limiting needle (2) to the central rotating shaft (97) is greater than the distance from the limiting pile (1) to the axis of the central rotating shaft (97) when the push rod (38) is popped up; when the limiting sleeve (35) is vertically arranged, the length of the limiting stop needle (2) from the top end of the limiting sleeve (35) is smaller than the length of the lower end of the limiting pile (1) from the top end of the limiting sleeve (35) when the push rod (38) is ejected;
change over switch (5) are located on wiring panel (96), still be equipped with LCD and controller on wiring panel (96), output voltage of voltage regulator is gathered and is shown on LCD to controller (59).
5. A sectionally operable autotransformer as claimed in claim 3 or 4, wherein:
proximity switches are arranged at two ends of the limiting pile (1).
6. The sectionally usable autotransformer of claim 5, wherein:
the driving device is also provided with a driving motor (56) and a driving circuit (55), the driving motor (56) is arranged on the dial (93) or the voltage regulator shell (90), the driving motor (56) drives the central rotating shaft (97) to rotate, and the driving motor (56) is electrically connected with the controller through the driving circuit (55);
the wiring panel (96) is provided with keys which are electrically connected with the controller (59).
7. The sectionally usable autotransformer of claim 2, wherein:
the method for adjusting the commonly used area comprises the following steps:
step 1, removing the connection between a dial (93) and a pressure regulator shell (90);
step 2, rotating the handle to rotate the dial (93);
after the dial plate starts to rotate, the positioning groove (901) is separated from the positioning protrusion (931), when the positioning groove is clamped with the positioning protrusion again, the positioning protrusion triggers the change-over switch (5) to act, and the code-free area (98) of the dial plate (93) is changed to a new position;
after the switching is carried out to a new position, the switch (5) acts, and meanwhile, the switching relay (KL) corresponding to the switch (5) acts, at the moment, the connection coil (42) corresponding to the code-free area (98) is separated from an adjustment area, and the leading-out points of two adjacent adjustment coils (41) of the connection coil (42) corresponding to the code-free area (98) are power supply leading-in end points of the coil winding of the voltage regulator; the other adjusting coils (41) and the connecting coil (42) form a complete adjusting area, and the range of the output voltage of each segmented coil (4) is changed;
and 3, re-fixing the connection between the dial (93) and the pressure regulator shell (90).
8. The sectionally usable autotransformer of claim 5, wherein:
the switching switch (5) is a relay, a coil winding of the switching switch (5) is electrically connected with the controller, and a normally open contact of the switching switch (5) is connected with a coil winding of the switching relay (KL) in series;
the method for adjusting the output range of the segmented coil (4) comprises the following steps:
through key selection, setting an adjusted position by combining a liquid crystal display, or starting switching when a controller detects that the use time reaches a set value;
the controller controls the corresponding switch (5) to be closed, after the switch (5) is closed, a switching relay (KL) corresponding to the switch is electrified, and the electrified switching relay has the function of connecting the connected segmented coil (4) with a power supply; the uncharged switching relay has the function of connecting the segmented coils (4), specifically: the connection coil (42) corresponding to the change-over switch (5) is separated from the adjusting area, and the leading-out points of two adjacent adjusting coils (41) of the connection coil (42) corresponding to the change-over switch (5) are power supply leading-in end points of the voltage regulator coil winding; the other adjusting coils (41) and the connecting coil (42) form a complete adjusting area,
and a coil winding of the switching relay is connected with a coil winding of the electromagnet (36) in series, and a push rod (38) of the limiting device corresponding to a connection coil (42) connected with the switching relay is popped up to limit the rotating position of the carbon brush.
9. The sectionally usable autotransformer of claim 8, wherein:
when the limiting blocking needle (2) rotates to the two ends of the limiting pile (1), the proximity switch is triggered, the controller is electrically connected with the proximity switch, the controller stops driving the motor (56) to rotate after receiving signals of the proximity switch, and meanwhile, the switching relay is disconnected to stop outputting voltage.
10. The sectionally usable autotransformer of claim 8, wherein:
step-by-step voltage output:
an increase key and a decrease key are set,
after the increase button is pressed, the controller controls the driving motor (56) to rotate to the maximum scale, and then the output voltage is increased
After the reduction key is pressed down, the controller controls the driving motor (56) to rotate towards the zero scale, and then the output voltage is reduced.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911298994.9A CN111326332B (en) | 2019-12-17 | 2019-12-17 | Self-coupling voltage regulator capable of being used in partition mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911298994.9A CN111326332B (en) | 2019-12-17 | 2019-12-17 | Self-coupling voltage regulator capable of being used in partition mode |
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| CN111326332B CN111326332B (en) | 2021-04-09 |
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| CN106847488A (en) * | 2017-03-22 | 2017-06-13 | 刘希荣 | The pressure regulator and carbon brush changing method of a kind of balance abrasion, switching method of discrimination |
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| US3466585A (en) * | 1966-07-15 | 1969-09-09 | Superior Electric Co | Adjustable voltage autotransformer |
| US4577146A (en) * | 1982-09-13 | 1986-03-18 | The Superior Electric Company | Variable autotransformer having an indexed stepping brush |
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| CN111326332B (en) | 2021-04-09 |
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