CN205140675U - Good heat dissipation's transformer for distributed generator - Google Patents

Abstract

The utility model discloses a transformer with good heat dissipation for a distributed power supply. A groove is arranged on the upper side of the base, a shock absorbing pad is embedded inside the groove, and a groove is also arranged on the upper side of the shock absorbing pad. , the lower end of the shell is embedded in the lower end of the shock-absorbing pad, the right side of the shell is provided with an air inlet, the left side of the shell is provided with an air outlet, the inner side of the air outlet is provided with a fan group, and the inner top of the shell is provided with a temperature sensor There is also a temperature controller inside the shell, and the magnetic core is set inside the shell. The magnetic core includes an upper arm, a connecting arm and a lower arm. The upper arm and the lower arm are respectively arranged at the upper and lower ends of the connecting arm. Both are equipped with a winding frame, and a number of through holes are opened on the winding frame. The winding frame on the upper arm is provided with a primary winding, and the winding frame on the lower arm is provided with a secondary winding. The primary winding and the secondary winding Insulators are provided. The utility model has the advantages of simple structure, small volume, long service life, good heat dissipation effect, good market prospect and easy popularization.

Description

A transformer with good heat dissipation for distributed power supply

technical field

The utility model relates to the field of electric equipment, in particular to a transformer with good heat dissipation for a distributed power supply.

Background technique

Distributed power supply access to the grid requires the use of a transformer. The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, secondary coil and iron core. In electrical equipment and wireless circuits, it is often used for raising and lowering voltage, matching impedance, safety isolation, etc. In a generator, whether the coil moves through the magnetic field or the magnetic field moves through the fixed coil, an electric potential can be induced in the coil. In both cases, the value of the magnetic flux remains the same, but the amount of magnetic flux intersecting the coil is different. Change, this is the principle of mutual induction. A transformer is a device that uses electromagnetic mutual induction to transform voltage, current and impedance. The functions of the transformer mainly include: voltage transformation; current transformation, impedance transformation; isolation; voltage stabilization (magnetic saturation transformer), etc.

When the transformer transmits electric energy, there will always be loss. This kind of loss mainly includes copper loss and iron loss. Both copper loss and iron loss will generate a lot of heat. Generally, civil transformers use transformer oil to take away this part of the heat. The heat is circulated through the heat transfer oil to the heat transfer tube outside the transformer shell for heat dissipation. During the peak power consumption in summer, the temperature of the transformer rises sharply, and the high temperature increases the internal resistance of the transformer, which further aggravates the heat generation and makes the transformer work relatively variable. Therefore, heat dissipation is a major factor for the stable operation of the transformer. Existing transformers either have unsatisfactory heat dissipation effects or are too expensive to manufacture. Now a transformer with good heat dissipation effect and low cost is urgently needed.

Utility model content

The purpose of this utility model is to provide a transformer with simple structure and easy to use and good heat dissipation for distributed power supply, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A transformer with good heat dissipation for a distributed power supply, comprising a casing, a base and a magnetic core, a groove is opened on the upper side of the base, and a shock-absorbing pad is embedded in the groove, and the shock-absorbing pad There is also a groove on the upper side, the lower end of the shell is embedded in the lower end of the shock pad, the right side of the shell is provided with an air inlet, the outside of the air inlet is provided with a self-hanging louver air outlet, and the left side of the shell is provided with The inner side of the air outlet is provided with a fan group, the outer side of the air outlet is provided with a heat dissipation grill, the outer side of the heat dissipation grille is also provided with a self-hanging louver air outlet, and the inner top of the shell is provided with a temperature sensor. The inside of the casing is also provided with a temperature controller, and the magnetic core is arranged inside the casing. The magnetic core includes an upper arm, a connecting arm and a lower arm, and the upper arm and the lower arm are respectively arranged at the upper and lower ends of the connecting arm. The outer sides of the arms are equipped with winding frames, and several through holes are opened on the winding frame. The winding frame on the upper arm is provided with a primary winding, and the winding frame on the lower arm is provided with a secondary winding. An insulation is provided between the winding and the secondary winding.

As a further solution of the present utility model: the insulating member is in the shape of a flat plate.

As a further solution of the present invention: the cross-sections of the upper arm, the connecting arm and the lower arm are circular or square, and the cross-sectional areas of the upper arm, the connecting arm and the lower arm are equal.

As a further solution of the present invention: the magnetic core is an iron core or a copper core.

Compared with the prior art, the beneficial effect of the utility model is: a shock absorber is provided, and the shell is embedded in the shock absorber, so that the front, rear, left, right, and lower sides of the shell are all located in the shock absorber, and the parts are mutually pulled , has a good shock absorption effect, and at the same time further reduces the noise generated by the vibration, increases the stability of the structure, and can prolong the service life of the transformer. Equipped with a temperature controller, the temperature sensor detects the temperature in the high-voltage housing, and transmits the temperature signal to the temperature controller, and the temperature controller controls the partial opening and full opening of the fan group, and transmits the heat in the housing through the cooling grille , at this time the self-suspending louver tuyere is automatically opened; when the fan unit is closed, the self-suspending louver tuyere is automatically closed, which has a better dust-proof function. By arranging the primary winding and the secondary winding on the upper arm and the lower arm of the magnetic core respectively, the width of the formed wire package is longer and the number of layers is less, so that the same number of winding coils requires a shorter total winding length, The consumption of wire is saved, and the material cost is reduced. At the same time, due to the reduction in the number of layers and the thinning of the wire package, the heat dissipation of the transformer is improved, the overall temperature rise of the transformer is greatly reduced, and the overall height of the transformer is also reduced. There are several through holes on the upper arm, which not only play the role of electrical insulation between the primary winding and secondary winding and the upper arm and lower arm, but also ensure the ventilation and creepage distance between the magnetic core and the primary winding and secondary winding, further optimizing cooling effect. The utility model has the advantages of simple structure, small volume and long service life. Through the combination of various heat dissipation structures, the heat dissipation effect is good, and no external equipment is needed, which saves resources, reduces production costs, meets people's use needs, and has a good market prospect. , easy to promote.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, in the embodiment of the present utility model, comprise housing 1, base 2 and magnetic core 9, the upper side of described base 2 is provided with groove, and the inside of described groove is embedded with shock-absorbing pad 3, so The upper side of the shock absorbing pad 3 is also provided with grooves, the lower end of the shell 1 is embedded in the lower end of the shock absorbing pad 3, and the shell 1 is embedded in the shock absorbing pad 3, so that the front, rear, left, right and bottom of the shell 1 The sides are all located in the shock-absorbing pad 3, and the parts are mutually pulled, which has a good shock-absorbing effect, and also further reduces the noise generated by the vibration, increases the stability of the structure, and prolongs the service life of the transformer. The right side of the casing 1 is provided with an air inlet 4, the outer side of the air inlet 4 is provided with a self-hanging louver air outlet 5, the left side of the casing 1 is provided with an air outlet 6, and the inner side of the air outlet 6 is provided with a fan group 7, The outside of the air outlet 6 is provided with a cooling grille 8, the outside of the cooling grille 8 is also provided with a self-hanging louver air outlet 5, the inner top of the casing 1 is provided with a temperature sensor 18, and the inside of the casing 1 is also provided with a temperature sensor. The controller 19 detects the temperature in the high-voltage housing 1 through the temperature 18, and transmits the temperature signal to the temperature controller 19. The temperature controller 19 controls the fan group 7 to be partially opened and fully opened, and the heat in the housing 1 is passed through the cooling grid. The grid 8 is transmitted out, and now the air outlet of the vertical louver 5 is automatically opened; when the fan group 7 is closed, the air outlet of the vertical louver 5 is automatically closed, which has a better dustproof function.

Described magnetic core 9 is arranged in the inside of housing 1, and magnetic core 9 comprises upper arm 10, connecting arm 11 and lower arm 12, and the cross section of described upper arm 10, connecting arm 11 and lower arm 12 is circular or square, and upper arm 10. The cross-sectional areas of the connecting arm 11 and the lower arm 12 are equal, the upper arm 10 and the lower arm 12 are respectively arranged at the upper and lower ends of the connecting arm 11, and the outer sides of the upper arm 10 and the lower arm 12 are provided with a winding frame 13, and the winding A number of through holes 14 are opened on the wire frame 13, which not only play the role of electrical insulation between the primary winding 15 and the secondary winding 17 and the upper arm 10 and the lower arm 12, but also ensure that the magnetic core 9 is connected with the primary winding 15 and the secondary winding. The ventilation and creepage distance of the winding 17 further optimizes the heat dissipation effect. The winding frame 13 on the upper arm 10 is provided with a primary winding 15, and the winding frame 13 on the lower arm 12 is provided with a secondary winding 17. The primary winding An insulator 16 is provided between 15 and the secondary winding 17, and the insulator 13 is in the shape of a flat plate. By disposing the primary winding 15 and the secondary winding 17 on the upper arm 10 and the lower arm 12 of the magnetic core 9 respectively, the formed wire package has a longer width and fewer layers, so that the same number of winding coils requires a total winding The length of the wire becomes shorter, which saves the amount of wire and reduces the material cost. At the same time, because the number of layers is reduced and the wire package is thinned, the heat dissipation of the transformer is improved, the overall temperature rise of the transformer is greatly reduced, and the overall height of the transformer is also reduced. The utility model has the advantages of simple structure, small volume and long service life. The combination of the heat dissipation structure makes the heat dissipation effect good, does not need external equipment, saves resources, reduces production costs, meets people's use needs, has a good market prospect, and is easy to promote.

Claims (4)

1. the transformer that a distributed power source thermal diffusivity is good, comprise shell (1), base (2) and magnetic core (9), it is characterized in that, the upside of described base (2) offers groove, the inside of described groove is embedded with beam (3), the upside of described beam (3) also offers groove, the lower end of described shell (1) is embedded in the lower end of beam (3), the right side of shell (1) is provided with air inlet (4), described air inlet (4) outside is provided with self hang down type air grille (5), the left side of shell (1) is provided with air outlet (6), the inner side of described air outlet (6) is provided with fan group (7), the outside of air outlet (6) is provided with heat dissipation grid (8), the outside of described heat dissipation grid (8) is also provided with self hang down type air grille (5), the inner tip of shell (1) is provided with temperature inductor (18), the inside of shell (1) is also provided with temperature controller (19), described magnetic core (9) is located at the inside of shell (1), magnetic core (9) comprises upper arm (10), linking arm (11) and underarm (12), described upper arm (10) and underarm (12) are located at the two ends up and down of linking arm (11) respectively, upper arm (10) and underarm (12) outside are equipped with drum stand (13), described drum stand (13) offers some through holes (14), drum stand (13) on upper arm (10) is provided with armature winding (15), drum stand (13) on underarm (12) is provided with secondary winding (17), insulating part (16) is provided with between described armature winding (15) and secondary winding (17).

2. the transformer that a kind of distributed power source thermal diffusivity according to claim 1 is good, is characterized in that, described insulating part (16) is writing board shape.

3. the transformer that a kind of distributed power source thermal diffusivity according to claim 1 is good, it is characterized in that, the cross section of described upper arm (10), linking arm (11) and underarm (12) is circular or square, and the cross-sectional area of upper arm (10), linking arm (11) and underarm (12) is equal.

4. the transformer that a kind of distributed power source thermal diffusivity according to claim 1 is good, is characterized in that, described magnetic core (9) is iron core or copper core.