Feeder line voltage regulator

Abstract

The utility model discloses a feeder line voltage regulator, belongs to the technical field of voltage regulators, and solves the problem that the cooling mode cannot be adjusted according to the temperature condition of the feeder line voltage regulator because the current fan works relatively constantly. Comprising a machine shell, a thick pipe communicating with the top face of the machine shell, a gradual change pipe communicating with the thick pipe and a guide pipe communicating with the gradual change pipe through a pipe connector, the guide pipe communicates with an air guiding assembly, and a plurality of air grooves communicating with the interior of the machine shell are formed in the side, away from the air guiding assembly, of the machine shell. The temperature control circuit controls the air guiding assembly to guide air to flow forwards and backwards according to the temperature in the machine shell. The temperature sensor with excellent position is used for detecting the temperature in the casing, the servo motor is controlled through the comparison circuit, the airflow direction and speed of the air pump are adjusted, heat is effectively dissipated, the temperature is effectively reduced, stable operation of the voltage regulator is guaranteed, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to voltage regulator technical field especially relates to a feeder voltage regulator. BACKGROUND

[0002] Feeder voltage regulator is an automatic voltage regulating equipment used in power system, which maintains the stability of output voltage by automatically adjusting transformer ratio. This equipment is particularly suitable for situations with large voltage fluctuation or large line voltage drop, and can automatically regulate input voltage within a certain range to ensure stable output voltage. Feeder voltage regulator is composed of three-phase autotransformer, three-phase on-load tap changer and intelligent controller. Autotransformer adjusts the ratio by changing the tap position of series winding to realize voltage regulation; on-load tap changer allows switching contacts under load to adjust the output voltage of transformer. Intelligent controller, as the core component, is responsible for collecting output voltage signals and sending control instructions after comparing with the set value to drive on-load tap changer for voltage regulation.

[0003] However, a large amount of heat is generated during the operation of feeder voltage regulator, and the accumulation of heat will cause the temperature of feeder voltage regulator to rise. The continuous rise of temperature may accelerate the aging of internal components and reduce the service life of the equipment. In general, air flow is guided by a fan to carry away the heat in the feeder voltage regulator. However, the current fan works relatively constantly and cannot adjust the cooling mode according to the temperature of feeder voltage regulator.

[0004] Therefore, a feeder voltage regulator is proposed to solve or alleviate the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the shortcomings in the prior art and provides a feeder voltage regulator.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A feeder voltage regulator, comprising a casing, a rough pipe in communication with the top surface of the casing, a gradually changing pipe in communication with the rough pipe, and a conduit in communication with the gradually changing pipe through a pipe joint, wherein an air guiding assembly is in communication with the conduit, the side of the casing away from the air guiding assembly is provided with a plurality of air grooves in communication with the inside of the casing, and further comprising a temperature control circuit, which controls the air guiding assembly to guide air flow in opposite directions according to the temperature inside the casing.

[0008] Preferably, the air guiding assembly comprises an air pump in communication with the conduit and fixedly connected to the side wall of the casing, and a servo motor in transmission connection with the input shaft of the air pump, wherein the servo motor is coupled with the temperature control circuit, and the temperature control circuit controls the servo motor to reverse according to the temperature inside the casing.

[0009] Preferably, the temperature control circuit comprises a temperature sensor, the temperature sensor is arranged on the inner side wall of the casing, and the temperature sensor is located on the side of the casing away from the air slot, the temperature sensor collects the ambient temperature in the casing and outputs a temperature signal.

[0010] Preferably, the temperature control circuit further comprises an upper and lower limit voltage comparison circuit, an input end of the upper and lower limit voltage comparison circuit is coupled with an output end of the temperature sensor, there are a temperature upper limit reference and a temperature lower limit reference in the upper and lower limit voltage comparison circuit, the upper and lower limit voltage comparison circuit outputs a first comparison signal in response to the temperature signal being greater than the temperature upper limit reference, and the upper and lower limit voltage comparison circuit outputs a second comparison signal in response to the temperature signal being between the temperature lower limit reference and the temperature upper limit reference.

[0011] Preferably, the temperature control circuit further comprises a controller, an input end of the controller is coupled with an output end of the upper and lower limit voltage comparison circuit, an output end of the controller is coupled with an input end of the servo motor through a motor drive circuit, the controller controls the servo motor to rotate forward in response to the second comparison signal, and the controller controls the servo motor to rotate reversely in response to the first comparison signal.

[0012] Preferably, the upper and lower limit voltage comparison circuit comprises a window comparator, the controller is a 51 series single-chip microcomputer, and the motor drive circuit is a TB67S109AFTG motor drive chip.

[0013] Preferably, a plurality of heat dissipation arc pieces made of copper are fixedly connected to the outer peripheral wall of the casing.

[0014] The utility model has the following beneficial effects:

[0015] In the operation of the utility model, the ambient temperature in the casing is monitored by a temperature sensor with a proper position, the temperature sensor is not easily disturbed by the external environment due to being far away from the air slot, and can more accurately reflect the actual temperature condition inside the casing, when the voltage regulator works, the heat dissipation arc pieces continuously dissipate heat to reduce the temperature in the casing, once the temperature sensor detects the temperature and outputs a signal, the upper and lower limit voltage comparison circuit compares the signal with the preset upper and lower limit references to determine the output of the first or second comparison signal.

[0016] When the second comparison signal is received, the controller instructs the servo motor to rotate forward to slow down the air flow; and when the first comparison signal is received, the controller instructs the servo motor to rotate reversely to speed up the air flow, the rotation direction change of the servo motor drives the air pump to adjust the air flow direction, so as to effectively discharge the heat in the casing, when the servo motor rotates forward, the air is discharged along a specific path, the flow rate gradually decreases in the gradual change pipe, so that the heat of the internal components is absorbed and taken away at a slow speed, the overall temperature of the voltage regulator is reduced, conversely, when the servo motor rotates reversely, the air enters the casing in large quantity through the air groove, and is discharged through the conduit, the change of the pipe diameter increases the flow rate, so that the heat exchange efficiency is strengthened, and the heat discharge is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 Fig. 1 is a structural schematic diagram of the present application;

[0019] Figure 2 Fig. 3 is a structural block diagram of the temperature control circuit in the present application;

[0020] Figure 3 Fig. 4 is a wiring diagram of the upper and lower limit voltage comparison circuit in the present application.

[0021] 1, casing; 2, heat dissipation arc piece; 3, thick pipe; 4, gradual change pipe; 5, pipe joint; 6, conduit; 7, air pump; 8, servo motor; 9, motor drive circuit; 10, controller; 11, upper and lower limit voltage comparison circuit; 12, temperature sensor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents the preferred application of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0024] It should be noted that similar reference numbers and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0025] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first", "second", "third", etc. are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] A feeder voltage regulator, such as Figure 1As shown, including the shell 1, with the shell 1 top surface of the thick tube 3, with the thick tube 3 communication tapered tube 4, and through the pipe joint 5 with the tapered tube 4 communication catheter 6, the outer wall of the shell 1 fixedly connected with a number of copper material heat dissipation arc sheet 2, the catheter 6 is communicated with the air guide assembly, the shell 1 away from the air guide assembly side is provided with a number of with its internal communication air groove, still includes temperature control circuit, temperature control circuit according to the temperature control air guide assembly positive and negative guide air flow in the shell 1, air guide assembly includes communication in the catheter 6 and fixedly connected on the side wall of the shell 1 air pump 7, and the input shaft transmission connection of air pump 7 servo motor 8, servo motor 8 and temperature control circuit are coupled, and temperature control circuit according to the temperature control servo motor 8 positive and negative rotation in the shell 1.

[0029] As Figure 2 and Figure 3 As shown, temperature control circuit includes temperature sensor 12, temperature sensor 12 is arranged on the inner side wall of the shell 1, and temperature sensor 12 is located in the shell 1 away from the air groove side, temperature sensor 12 gathers the ambient temperature in the shell 1 and outputs temperature signal, temperature control circuit further includes upper and lower limit voltage comparison circuit 11, the input end of upper and lower limit voltage comparison circuit 11 and the output end of temperature sensor 12 are coupled, there is temperature upper limit reference and temperature lower limit reference in upper and lower limit voltage comparison circuit 11, upper and lower limit voltage comparison circuit 11 outputs first comparison signal in response to temperature signal greater than temperature upper limit reference, and it outputs second comparison signal in response to temperature signal between temperature lower limit reference and temperature upper limit reference, temperature control circuit further includes controller 10, the input end of controller 10 and the output end of upper and lower limit voltage comparison circuit 11 are coupled, the output end of controller 10 is coupled with the input end of servo motor 8 through motor drive circuit 9, controller 10 controls servo motor 8 positive rotation in response to second comparison signal, controller 10 controls servo motor 8 reverse rotation in response to first comparison signal, upper and lower limit voltage comparison circuit 11 includes window comparator, controller 10 is 51 series single-chip microcomputer, and motor drive circuit 9 is TB67S109AFTG motor drive chip.

[0030] The utility model discloses in actual application time, through temperature sensor 12 to detect the environmental temperature in the casing 1, because temperature sensor 12 sets up in the casing 1 in the side away from the air groove, and temperature sensor 12 detected temperature is not easy to be influenced by outside environment, more conform to the actual situation in the casing 1, and the radiating arc piece 2 is in the whole voltage regulator work's process and carries out heat dissipation cooling, when temperature sensor 12 detects temperature and exports temperature signal to the upper and lower limit voltage comparison circuit 11, and the upper and lower limit voltage comparison circuit 11 responds to the first comparison signal after temperature signal greater than temperature upper limit reference, and it responds to the second comparison signal after temperature signal between temperature lower limit reference and temperature upper limit reference, and the controller 10 responds to the second comparison signal and controls servo motor 8 positive rotation, and conversely responds to the first comparison signal and controls servo motor 8 reverse rotation, and the positive and negative rotation of servo motor 8 will drive air pump 7 to realize the change of air flow direction, when servo motor 8 positive rotation, air pump 7 guides air to leave through the order of conduit 6, gradual change pipe 4, thick pipe 3, casing 1 and air groove, and the flow rate that air is guided initially by air pump 7 is fast, but after entering gradual change pipe 4, the flow rate of air gradually reduces, and air carries away the heat of electric element in casing 1 with relatively slow speed, make the heat of whole feeder voltage regulator reduce, and conversely, then need to guide a large number of air into the casing 1 through the air groove, and guide air to leave through the order of thick pipe 3, gradual change pipe 4, conduit 6, because the diameter reduces, so also lead to the flow rate of leaving air increase, in this way, can make the air that carries away the heat in casing 1 be guided to the position that is farther than casing 1 compared to, and also can make the air after heat exchange leave casing 1 as soon as possible, make the temperature of whole feeder voltage regulator not be too high, make it guarantee service life stability.

[0031] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, for the skilled person in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made in the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A feeder voltage regulator characterized by, The air guiding assembly includes an air pump (7) communicated on the catheter (6) and fixedly connected on the side wall of the shell (1), and a servo motor (8) drivingly connected with the input shaft of the air pump (7), the servo motor (8) is coupled with the temperature control circuit, and the temperature control circuit controls the forward and reverse rotation of the servo motor (8) according to the temperature in the shell (1).

2. A feeder voltage regulator according to claim 1, characterized in that The temperature control circuit includes a temperature sensor (12) arranged on the inner side wall of the shell (1), and the temperature sensor (12) is located on the side of the shell (1) away from the air slot, the temperature sensor (12) collects the ambient temperature in the shell (1) and outputs a temperature signal.

3. A feeder voltage regulator according to claim 2, wherein, The temperature control circuit further includes an upper and lower limit voltage comparison circuit (11), the input end of the upper and lower limit voltage comparison circuit (11) is coupled with the output end of the temperature sensor (12), there are temperature upper limit reference and temperature lower limit reference in the upper and lower limit voltage comparison circuit (11), the upper and lower limit voltage comparison circuit (11) outputs a first comparison signal when the temperature signal is greater than the temperature upper limit reference, and outputs a second comparison signal when the temperature signal is between the temperature lower limit reference and the temperature upper limit reference.

4. A feeder voltage regulator according to claim 3, wherein The temperature control circuit further includes a controller (10), the input end of the controller (10) is coupled with the output end of the upper and lower limit voltage comparison circuit (11), the output end of the controller (10) is coupled with the input end of the servo motor (8) through a motor driving circuit (9), the controller (10) controls the forward rotation of the servo motor (8) in response to the second comparison signal, and the controller (10) controls the reverse rotation of the servo motor (8) in response to the first comparison signal.

5. A feeder voltage regulator according to claim 4, wherein, The upper and lower limit voltage comparison circuit (11) includes a window comparator, the controller (10) is a 51 series single-chip microcomputer, and the motor driving circuit (9) is a TB67S109AFTG motor driving chip.

6. A feeder voltage regulator according to claim 5, wherein, The outer peripheral wall of the shell (1) is fixedly connected with a plurality of heat dissipation arcs made of copper.

7. A feeder voltage regulator according to claim 1, wherein ​

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