CN217606654U - Novel pulse triggering transformer - Google Patents

Abstract

The utility model discloses a novel pulse trigger transformer in the technical field of medium frequency induction furnaces, including the resistance R1, the resistance R2, the coil, the resistance-capacitance absorption loop and the diode D that are packaged together through insulating high temperature resistant plastic box, the coil includes low voltage coil N1 and the high voltage coil N2 of winding in the iron core both sides, be equipped with the internal shield layer on the circumference between low voltage coil N1 and the iron core, be equipped with the external shield layer on the circumference between low voltage coil N1 and the high voltage coil N2, keep apart silicon controlled rectifier high pressure part and low pressure part completely, can not influence the low pressure control part when high pressure part takes place heavy current, big voltage fault, protected control system; the shielding layer of the device is grounded, so that external high frequency, high voltage and interference signals generated by a magnetic field are shielded, and the transmission of a silicon controlled trigger signal is ensured; meanwhile, the whole body is packaged by high-performance insulating glue, so that the electric insulation performance is good, the dust and water are prevented, the using effect is better, the service life is prolonged, and the practicability is realized.

Description

Novel pulse triggering transformer

Technical Field

The utility model relates to a medium frequency induction furnace technical field specifically is a novel pulse trigger transformer.

Background

The principle of the medium frequency induction melting furnace is that a 50HZ power frequency power supply is converted into a medium frequency power supply above 200HZ through an electronic control system to drive the melting furnace to work, specifically, a set of full wave rectifying device consisting of thyristors is used for converting power frequency high voltage electricity into a direct current power supply, an inverter consisting of a group of thyristors is used for converting direct current into alternating current with required frequency, and a transformer is needed to be arranged for converting low current pulse signals generated by the electronic control system into voltage signals enough for driving the thyristors. For example, CN202122637096.0 discloses a silicon controlled intermediate frequency induction melting furnace, which comprises a power supply assembly, a cooling tower and an induction furnace, wherein the top of the induction furnace is sleeved with a top support plate, the bottom of the induction furnace is fixedly connected with a reinforcing block, the bottom of the reinforcing block is fixedly connected with a bottom support block, the outer side of the induction furnace is fixedly connected with a group of electric adjusting assemblies, and two sides of each electric adjusting assembly are connected with a group of support frames; according to the scheme, the power supply assembly and the cooling water tower are combined, adaptation can be carried out between the power supply assembly and the induction furnace, water can be rapidly cooled when the induction furnace normally works, the power supply assembly can also provide a good stable using state, and meanwhile, the inner barrel can be adapted to the arranged partition plate when the induction furnace is used, so that water circulation can be accelerated; and along with the power of intermediate frequency electric stove is bigger and bigger, the regional magnetic field of power supply unit constantly strengthens, and is also more and more serious to silicon controlled rectifier pulse control signal's interference, simultaneously, conventional silicon controlled rectifier pulse control panel electronic component all exposes in the air in the past, and the dust is piled up, and the condition such as cooling water splash leads to electronic component to puncture easily and damages, so need to design a better transformer subassembly of result of use in the actual use urgently, based on this, the utility model discloses a novel pulse trigger transformer to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel pulse trigger transformer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel pulse trigger transformer, includes resistance R1, resistance R2, coil, resistance-capacitance absorption circuit and diode D through insulating high temperature resistant plastic box encapsulation together, the coil is including winding low voltage coil N1 and the high voltage coil N2 in the iron core both sides, low voltage coil N1's both ends are connecting terminal c and resistance R1 respectively, resistance R1's the other end is connected with terminal a and resistance R2, resistance R2's the other end is connected with terminal b, diode D has concatenated to high voltage coil N2's one end, diode D's negative pole has concatenated resistance-capacitance absorption circuit and silicon controlled rectifier trigger line G utmost point terminal 1, the resistance-capacitance absorption circuit other end and high voltage coil N2's the other end and silicon controlled rectifier trigger line K utmost point son 2, be equipped with the shielding internal layer on the circumference between low voltage coil N1 and the iron core, be equipped with the external shield layer on the circumference between low voltage coil N1 and the high voltage coil N2, internal shield layer connection ground terminal D, the external layer is connected with silicon controlled rectifier trigger line K utmost point son 2.

Preferably, the inner shielding layer and the outer shielding layer are both metal foils.

Preferably, the box cover and the box body of the insulating high-temperature-resistant plastic box are bonded through high-performance insulating glue.

Preferably, the resistance-capacitance absorption loop comprises a capacitor C and a resistor R3 which are connected in parallel and used for absorbing the line spike voltage.

Preferably, the resistors R1 and R2 are both common resistors.

Preferably, the terminal a, the terminal b, the terminal c, the grounding terminal d, the thyristor trigger line G pole terminal 1 and the thyristor trigger line K pole terminal 2 are all injected with glue and fixedly penetrate through and are inserted on the outer wall of the insulating high-temperature-resistant plastic box.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model completely isolates the high-voltage part and the low-voltage part of the controlled silicon, and when the high-voltage part has large current and large voltage faults, the low-voltage control part can not be influenced, thereby protecting the control system; the shielding layer of the device is grounded, so that external high frequency, high voltage and interference signals generated by a magnetic field are shielded, and the transmission of a silicon controlled trigger signal is ensured; meanwhile, the whole body is packaged by high-performance insulating glue, so that the electric insulation structure has good electric insulation performance, is dustproof and waterproof, has a better use effect, prolongs the service life and has practicability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1, the present invention provides a technical solution: a novel pulse trigger transformer comprises a resistor R1, a resistor R2, a coil, a resistance-capacitance absorption loop and a diode D which are packaged together through an insulating high-temperature-resistant plastic box, wherein a box cover and a box body of the insulating high-temperature-resistant plastic box are bonded through high-performance insulating glue, the coil is electrically insulated, dustproof and waterproof simultaneously, and comprises a low-voltage coil N1 and a high-voltage coil N2 which are wound on two sides of an iron core, two ends of the low-voltage coil N1 are respectively connected with a terminal C and the resistor R1, the other end of the resistor R1 is connected with a terminal a and a resistor R2, the other end of the resistor R2 is connected with a terminal b, one end of the high-voltage coil N2 is connected with the diode D in series, the cathode of the diode D is connected with the resistance-capacitance absorption loop and a thyristor trigger line G pole terminal 1, the other end of the resistance-capacitance absorption loop is connected with the other end of the high-voltage coil N2 and a thyristor trigger line K pole terminal 2, wherein, resistance-capacitance absorption circuit is including parallelly connected electric capacity C and resistance R3, be used for absorbing the sharp thorn voltage of circuit, be equipped with the internal shield layer on the circumference between low voltage coil N1 and the iron core, be equipped with the external shield layer on the circumference between low voltage coil N1 and the high voltage coil N2, ground terminal D is connected on the internal shield layer, the external shield layer is connected with silicon controlled rectifier trigger line K utmost point terminal 2, and internal shield layer and external shield layer are the foil, and simultaneously, resistance R1 and R2 all adopt ordinary resistance, to the voltage class demand of difference, change the wiring mode, and terminal a, terminal b, terminal C, ground terminal D, silicon controlled rectifier trigger line G utmost point terminal 1 and the equal injecting glue of silicon controlled rectifier trigger line K utmost point terminal 2 are fixed to be run through and are pegged graft on the outer wall of insulating high temperature resistant plastic case, convenient wiring, and internal element has been protected.

Use the utility model relates to a novel pulse triggers during transformer: the terminals c and b (or a) are connected with a pulse generating circuit of the medium-frequency induction furnace, and the grounding terminal d is grounded and used for shielding interference signals, preventing pulse distortion loss caused by external signal interference and ensuring reliable conduction of the silicon controlled rectifier; thyristor trigger line G utmost point terminal 1 connects the thyristor trigger line G utmost point, thyristor trigger line K utmost point terminal 2 connects the thyristor trigger line K utmost point, the device once inclines and pulse generator connects (low pressure), secondary side and thyristor control utmost point are connected (high pressure), after pulse generator sends the pulse, control utmost point through device trigger control silicon controlled rectifier, realize low pressure and high-pressure side complete separation, prevent that the low pressure side from receiving the high-pressure side recoil to cause overvoltage, the danger of overcurrent, diode D one-way switches on, prevent the thyristor reverse voltage, electric capacity C and resistance R3 constitute resistance-capacitance absorption return circuit, be used for absorbing circuit spine voltage.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a novel pulse trigger transformer, includes resistance R1, resistance R2, coil, resistance-capacitance absorption circuit and diode D, its characterized in that through the encapsulation of insulating high temperature resistant plastic case together: the coil is including winding low voltage coil N1 and the high voltage coil N2 in the iron core both sides, low voltage coil N1's both ends are connecting terminal c and resistance R1 respectively, resistance R1's the other end is connected with terminal a and resistance R2, resistance R2's the other end is connected with terminal b, high voltage coil N2's one end has concatenated diode D, diode D's negative pole has and has resistance-capacitance absorption circuit and silicon controlled rectifier trigger line G utmost point terminal 1, resistance-capacitance absorption circuit other end and high voltage coil N2's the other end and silicon controlled rectifier trigger line K extreme terminal 2, be equipped with the internal shield layer on the circumference between low voltage coil N1 and the iron core, be equipped with the external shield layer on the circumference between low voltage coil N1 and the high voltage coil N2, ground terminal D is connected on the internal shield layer, the external shield layer is connected with silicon controlled rectifier trigger line K extreme terminal 2.

2. The novel pulse-triggered transformer of claim 1, characterized in that: the inner shielding layer and the outer shielding layer are both metal foils.

3. The novel pulse-triggered transformer of claim 1, characterized in that: and the box cover and the box body of the insulating high-temperature-resistant plastic box are bonded through high-performance insulating glue.

4. The novel pulse-triggered transformer of claim 1, characterized in that: the resistance-capacitance absorption loop comprises a capacitor C and a resistor R3 which are connected in parallel and used for absorbing the circuit spike voltage.

5. The novel pulse-triggered transformer of claim 1, characterized in that: and the resistors R1 and R2 are both common resistors.

6. The novel pulse-triggered transformer of claim 1, characterized in that: and the terminal a, the terminal b, the terminal c, the grounding terminal d, the G pole terminal 1 of the thyristor trigger line and the K pole terminal 2 of the thyristor trigger line are all injected with glue and are fixedly inserted on the outer wall of the insulating high-temperature-resistant plastic box in a penetrating manner.

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