CN217640890U - Multi-winding multi-voltage dry-type transformer - Google Patents

Abstract

The utility model relates to the technical field of auxiliary devices of electric power facilities, in particular to a multi-winding multi-voltage dry-type transformer which has simple structure, can shield air holes when a cooling fan is not used, and prevents impurities from entering the cooling fan; the iron core comprises an upper iron yoke, a lower iron yoke and an iron core fixed on the upper iron yoke and the lower iron yoke, wherein square tubes are fixed on two sides of the lower iron yoke; further comprising: the door plate is fixed on the square pipe, and a cooling fan is fixed on the door plate through a cushion block; l-shaped plates are fixed on the left side and the right side of the door-shaped plate, and L-shaped grooves are formed in the L-shaped plates; still include the apron, apron one end is fixed with the removal axle I that stretches into to L type groove horizontal part, and the other end is fixed with the removal axle II that stretches into to L type groove vertical part.

Description

A multi-winding multi-voltage dry-type transformer

technical field

The utility model relates to the technical field of auxiliary devices of power facilities, in particular to a multi-winding multi-voltage dry-type transformer.

Background technique

Dry-type transformers are widely used in local lighting, high-rise buildings, airports, terminal CNC machinery and equipment, etc. Simply speaking, dry-type transformers refer to transformers whose iron cores and windings are not immersed in insulating oil; and in order to improve practicability, multi-voltage It has become a feature of dry-type transformers.

The existing multi-winding and multi-voltage dry-type transformers mostly use cooling fans for forced air cooling. The cooling area fans often have air holes for air outlet. When the cooling fans stop working, impurities can easily enter the cooling fans along the air holes. Affect the service life of the cooling fan.

Utility model content

In order to solve the above technical problems, the utility model provides a multi-winding multi-voltage dry-type transformer, which has a simple structure and can block the air holes when the cooling fan is not in use to prevent impurities from entering the cooling fan.

The multi-winding multi-voltage dry-type transformer of the utility model comprises an upper iron yoke, a lower iron yoke and an iron core fixed on the two, and square tubes are fixed on both sides of the lower iron yoke; and further comprises:

The door plate fixed on the square tube, the door plate is fixed with a cooling fan through the spacer;

L-shaped plates are fixed on the left and right sides of the door plate, and L-shaped grooves are arranged on the L-shaped plates;

It also includes a cover plate, one end of the cover plate is fixed with a moving shaft 1 extending into the horizontal part of the L-shaped groove, and the other end is fixed with a moving shaft 2 extending into the vertical part of the L-shaped groove.

Further, a support shaft is rotatably installed on both sides of the door panel, a power arm is fixed on the support shaft, a long hole is set on the power arm, and the moving shaft passes through the long hole;

An extension arm is fixed on the support shaft.

Further, a touch panel is fixed on one of the power arms;

A base plate is fixed on one side of the door plate, a screw rod is threadedly connected to the base plate, and a guide rod is slidably installed on the base plate. Closed proximity switch.

Further, a ratchet wheel is fixed on one of the support shafts;

A fixing ring is fixed on one side of the door type plate, a locking block is slid on the fixing ring, and one end of the locking block and the ratchet is an inclined plane;

A support ring is fixed on the locking block, a spring is sleeved on the locking block, and two ends of the spring are respectively in contact with the fixing ring and the support ring.

Further, an operation ring 1 is threadedly connected to the end of the extension arm.

Further, a second operating ring is threadedly connected to one end of the locking block away from the ratchet.

Further, the screw rod is threadedly connected with a nut.

Further, a baffle plate for limiting the position of the touch panel is also fixed on the door panel.

Compared with the prior art, the beneficial effect of the present invention is: in normal use, after the cooling fan stops working, hold the cover plate and pull the cover plate, the moving shaft moves along the horizontal part of the L-shaped groove, and simultaneously the moving shaft moves along the horizontal part of the L-shaped groove. 2. Move along the vertical part of the L-shaped groove, and the cover plate covers the air hole on the top of the cooling fan to prevent impurities from falling along the air hole to the inside of the cooling fan. The cover plate of this device is placed on the side of the cooling fan. Does not take up much space.

Description of drawings

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

Fig. 2 is the structure diagram of the left side of Fig. 1;

Fig. 3 is a partial enlarged view of part A in Fig. 2;

Figure 4 is a structural diagram of the door panel, the L-shaped panel, the first moving shaft, etc.;

Symbols in the drawings: 1, lower iron yoke; 2, iron core; 3, square tube; 4, door panel; 5, spacer; 6, cooling fan; 7, L-shaped plate; 8, cover plate; Moving shaft one; 10. Moving shaft two; 11. Support shaft; 12. Power arm; 13. Extension arm; 14. Touch panel; 15. Base plate; 16. Screw rod; 17. Guide rod; 18. Hand wheel; 19 , base; 20, proximity switch; 21, ratchet; 22, fixing ring; 23, locking block; 24, support ring; 25, spring; 26, operating ring one; 27, operating ring two; 28, nut; 29, bezel.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be connected in one piece; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in FIGS. 1 to 4 , a multi-winding multi-voltage dry-type transformer of the present invention includes an upper iron yoke, a lower iron yoke 1 and an iron core 2 fixed on both, and both sides of the lower iron yoke 1 are Fixed square tube 3; also includes:

The door panel 4 is fixed on the square tube 3, and the cooling fan 6 is fixed on the door panel 4 through the spacer 5;

L-shaped plates 7 are fixed on the left and right sides of the door plate 4, and L-shaped grooves are provided on the L-shaped plates 7;

It also includes a cover plate 8, one end of the cover plate 8 is fixed with a moving shaft one 9 extending into the horizontal part of the L-shaped groove, and the other end is fixed with a moving shaft two 10 extending into the vertical part of the L-shaped groove, in order to reduce the moving shaft The wear of the first 9 and the second moving shaft 10, the bearing is installed on the moving shaft one 9 and the second moving shaft 10, and is in contact with the inner wall of the L-shaped groove;

In this embodiment, in normal use, after the cooling fan 6 stops working, hold the cover plate 8 and pull the cover plate 8, the moving shaft one 9 moves along the horizontal part of the L-shaped groove, and the moving shaft two 10 moves along the L-shaped groove at the same time. The vertical part of the groove moves, and the cover plate 8 blocks the air hole at the top of the cooling fan 6 to prevent impurities from falling down along the air hole to the inside of the cooling fan 6 .

As a preferred solution of the above-mentioned embodiment, a support shaft 11 is rotatably installed on both sides of the door panel 4, a power arm 12 is fixed on the support shaft 11, a long hole is opened on the power arm 12, and the moving shaft 1 9 passes through the long bar hole;

An extension arm 13 is fixed on the support shaft 11;

In this embodiment, when the cover plate 8 needs to be moved, the extension arm 13 is held and rotated, so that the extension arm 13, the support shaft 11 and the power arm 12 are all rotated. Since the moving shaft 1 9 passes through the power arm 12 Therefore, under the driving of the power arm 12, the moving shaft 1 9 and the moving shaft 2 10 move along the L-shaped groove, so as to make the cover plate 8 move.

As a preferred solution of the above embodiment, one of the power arms 12 is fixed with a touch panel 14;

A base plate 15 is fixed on one side of the door panel 4, a screw rod 16 is threadedly connected to the base plate 15, a guide rod 17 is slidably installed on the base plate 15, one end of the screw rod 16 is installed with a hand wheel 18, and the other end is rotated to install a base 19, A proximity switch 20 for controlling the opening and closing of the cooling fan 6 is installed on the base 19;

In this embodiment, the screw rod 16 is rotated by rotating the hand wheel 18, and the position of the base 19 and the proximity switch 20 is adjusted under the cooperation of the guide rod 17. In the state shown in the figure, the touch panel 14 and the The proximity switch 20 cooperates, and the proximity switch 20 controls the cooling fan 6 to open to dissipate heat to the iron core 2, etc. When the cover plate 8 is closed, the contact plate 14 rotates with the power arm 12, and the contact plate 14 gradually moves away from the proximity switch 20. The proximity switch 20 controls the cooling fan 6 to be turned off.

As a preferred solution of the above embodiment, a ratchet wheel 21 is fixed on one of the support shafts 11;

A fixing ring 22 is fixed on one side of the door panel 4, a locking block 23 is slid on the fixing ring 22, and one end of the locking block 23 and the ratchet 21 is a slope;

A support ring 24 is fixed on the locking block 23, a spring 25 is sleeved on the locking block 23, and both ends of the spring 25 are in contact with the fixing ring 22 and the support ring 24 respectively;

In this embodiment, the ratchet wheel 21 rotates with the support shaft 11 when the cover plate 8 blocks the air hole. Since the ratchet wheel 21 and the locking block 23 at this time cooperate with the inclined surface, the locking block 23 and the support ring 24 are relatively opposite to each other. The reciprocating movement of the fixing ring 22 will not hinder the rotation of the ratchet wheel 21, but when the support shaft 11 and the ratchet wheel 21 are reversed, the tooth end of the ratchet wheel 21 will be stuck on the locking block 23 and will not be reversed. At this time, it should be moved manually. The locking block 23 can be separated from the ratchet 21, and then the extension arm 13 can be rotated.

As a preferred solution of the above embodiment, the end of the extension arm 13 is threadedly connected with an operating ring 1 26;

In the present embodiment, the extension arm 13 is rotated by holding the operation ring 1 26, so that the extension arm 13 is more convenient to bear the force and more comfortable at the same time.

As a preferred solution of the above embodiment, one end of the locking block 23 away from the ratchet wheel 21 is threadedly connected with the second operating ring 27;

In this embodiment, the locking block 23 is moved by holding the operating ring 1 26 , so that the locking block 23 is more convenient to be stressed and more comfortable at the same time.

As a preferred solution of the above embodiment, a nut 28 is threadedly connected to the screw rod 16;

In this embodiment, after adjusting the position of the proximity switch 20 , the nut 28 is tightened to fix the position of the proximity switch 20 .

As a preferred solution of the above embodiment, a baffle plate 29 for limiting the position of the touch panel 14 is also fixed on the door panel 4;

In this embodiment, when the baffle plate 29 is in contact with the touch panel 14 , the touch panel 14 can just fit with the proximity switch 20 to prevent the proximity switch 20 from being damaged due to its transitional movement.

The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present utility model, several improvements and modifications can be made. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (8)

1. A multi-winding multi-voltage dry-type transformer comprises an upper iron yoke, a lower iron yoke (1) and an iron core (2) fixed on the upper iron yoke and the lower iron yoke, wherein square tubes (3) are fixed on two sides of the lower iron yoke (1); it is characterized by also comprising:

a door-shaped plate (4) fixed on the square tube (3), wherein a cooling fan (6) is fixed on the door-shaped plate (4) through a cushion block (5);

l-shaped plates (7) are fixed on the left side and the right side of the door-shaped plate (4), and L-shaped grooves are formed in the L-shaped plates (7);

still include apron (8), apron (8) one end is fixed with and stretches into removal axle one (9) to L type groove horizontal part, and the other end is fixed with and stretches into removal axle two (10) to L type groove vertical part.

2. A multi-winding multi-voltage dry-type transformer according to claim 1, wherein the door-shaped plate (4) is rotatably mounted with supporting shafts (11) at both sides, the supporting shafts (11) are fixed with power arms (12), the power arms (12) are provided with elongated holes, and the first moving shaft (9) passes through the elongated holes;

an extension arm (13) is fixed on the support shaft (11).

3. A multi-winding, multi-voltage dry-type transformer according to claim 2, wherein a contact plate (14) is fixed to one of the power arms (12);

a base plate (15) is fixed on one side of the door-shaped plate (4), a screw rod (16) is connected to the base plate (15) in a threaded mode, a guide rod (17) is installed on the base plate (15) in a sliding mode, a hand wheel (18) is installed at one end of the screw rod (16), an installation base (19) is rotated at the other end of the screw rod, and a proximity switch (20) used for controlling the cooling fan (6) to be opened and closed is installed on the base (19).

4. A multi-winding multi-voltage dry-type transformer according to claim 3, wherein a ratchet (21) is fixed to one of the supporting shafts (11);

a fixing ring (22) is fixed on one side of the door-shaped plate (4), a locking block (23) slides on the fixing ring (22), and the end, matched with the ratchet wheel (21), of the locking block (23) is an inclined surface;

a supporting ring (24) is fixed on the locking block (23), a spring (25) is sleeved on the locking block (23), and two ends of the spring (25) are respectively contacted with the fixing ring (22) and the supporting ring (24).

5. A multi-winding multi-voltage dry-type transformer according to claim 4, characterized in that the end of said extension arm (13) is screwed with a first operating ring (26).

6. A multi-winding multi-voltage dry transformer according to claim 5, characterized in that a second operating ring (27) is screwed to the end of the locking block (23) remote from the ratchet (21).

7. A multi-winding, multi-voltage dry-type transformer according to claim 6, characterized in that the screw rod (16) is threaded with a nut (28).

8. A multi-winding multi-voltage dry-type transformer according to claim 7, characterized in that a baffle (29) limiting the contact plate (14) is further fixed to the door-shaped plate (4).

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