CN210606857U

CN210606857U - Dry-type transformer for thermal power plant

Info

Publication number: CN210606857U
Application number: CN201921279606.8U
Authority: CN
Inventors: 陈长江; 王东亮; 何亮; 刘智焘
Original assignee: Wuhan Grace Electric Co ltd
Current assignee: Wuhan Grace Electric Co ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-05-22
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a dry-type transformer for thermal power plant, comprising a base plate, the upper surface of bottom plate is provided with the protection storehouse, the outer wall inside in protection storehouse is provided with the hollow layer, be provided with the fixing base on the inner wall of hollow layer, one side of fixing base is provided with the atress board, be provided with the spring between fixing base and the atress board, the both ends of spring respectively with one side outer wall fixed connection of fixing base and atress board, be provided with the bolt on the opposite side outer wall of atress board, the atress board passes through the inner wall fixed connection of bolt and protection storehouse, the inside in protection storehouse is provided with the winding, the lower surface of winding is provided with the cushion, the upper surface of winding is provided with the folder, be provided with the high-voltage terminal on the preceding terminal surface of folder. The utility model discloses a protection storehouse that sets up plays the effect of protection dry-type transformer internal plant to the effectual life who prolongs dry-type transformer for the thermal power plant.

Description

Dry-type transformer for thermal power plant

Technical Field

The utility model relates to a dry-type transformer technical field specifically is a dry-type transformer is used in thermal power plant.

Background

The dry-type transformer is widely used in places such as local lighting, high-rise buildings, airports, wharf CNC mechanical equipment and the like, and simply, the dry-type transformer refers to a transformer with an iron core and a winding which are not immersed in insulating oil, and the cooling mode includes natural air cooling and forced air cooling. During natural air cooling, the transformer can continuously operate for a long time under the rated capacity. When forced air cooling is carried out, the output capacity of the transformer can be improved by 50 percent. The device is suitable for intermittent overload operation or emergency accident overload operation; because the load loss and the impedance voltage amplification are large during overload and the device is in a non-economic operation state, the device is not required to be in continuous overload operation for a long time.

In the use process of the traditional dry-type transformer for the thermal power plant, internal equipment of the dry-type transformer is often damaged due to the complex environment of the thermal power plant, so that the service life of the dry-type transformer is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dry-type transformer is used in thermal power plant to solve the traditional dry-type transformer is used in thermal power plant who proposes in the above-mentioned background art at the in-process that uses, often can lead to the problem that dry-type transformer's internal plant damaged because of the complicated environment of thermal power plant.

In order to achieve the above object, the utility model provides a following technical scheme: a dry-type transformer for thermal power plants comprises a bottom plate, wherein a protective bin is arranged on the upper surface of the bottom plate, a hollow layer is arranged inside the outer wall of the protective bin, a fixed seat is arranged on the inner wall of the hollow layer, a stress plate is arranged on one side of the fixed seat, a spring is arranged between the fixed seat and the stress plate, two ends of the spring are fixedly connected with the outer wall of one side of the fixed seat and the outer wall of one side of the stress plate respectively, a bolt is arranged on the outer wall of the other side of the stress plate, the stress plate is fixedly connected with the inner wall of the protective bin through the bolt, a winding is arranged inside the protective bin, a cushion block is arranged on the lower surface of the winding, a clamping piece is arranged on the upper surface of the winding, a high-voltage terminal is arranged on the front end surface of the clamping piece, a high-voltage, the high-voltage tap is fixedly connected with the high-voltage terminal through a high-voltage connecting rod.

Preferably, the lower surface of the bottom plate is provided with a supporting seat, and the supporting seat is connected with the lower surface of the bottom plate in a welding mode.

Preferably, the upper end of the clamping piece is provided with two hanging rings, and the two hanging rings are symmetrical about the vertical center line of the protection bin.

Preferably, the cushion block is arranged on the lower surface of the winding, and the cushion block and the winding are of an integrated structure.

Preferably, the horizontal center line of the fixed seat coincides with the horizontal center line of the stress plate.

Preferably, the outer wall of one side of the stress plate is provided with a push rod, and the push rod is arranged inside the spring.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a protection storehouse that sets up plays the effect of protection dry-type transformer internal plant, receive the offend back of external force at the in-process of work when dry-type transformer, the intensity of impact force can be experienced to the hollow layer of protection storehouse inside, the peak value back of impact force is received to the atress board of hollow in-layer inside, drive the spring and to fixing base department deformation, treat the peak value of impact force after crossing, under the effect of ejector pin, the spring resets, it gets back to original position to drive the atress board, reach the purpose of protection dry-type transformer internal plant, thereby the effectual life who prolongs dry-type transformer for the thermal power plant.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the protection bin of the present invention;

FIG. 3 is an enlarged schematic view of part A of the present invention;

in the figure: 1. a supporting seat; 2. a base plate; 3. a protection bin; 31. a hollow layer; 4. cushion blocks; 5. a winding; 6. a high-voltage connecting sheet; 7. a high pressure connecting rod; 8. a high voltage tap; 9. a clamp; 10. a high voltage terminal; 11. a hoisting ring; 12. a fixed seat; 13. a spring; 14. a top rod; 15. a stress plate; 16. and (4) bolts.

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.

Referring to fig. 1-3, the present invention provides an embodiment: a dry-type transformer for thermal power plant comprises a bottom plate 2, a protection bin 3 is arranged on the upper surface of the bottom plate 2, a hollow layer 31 is arranged inside the outer wall of the protection bin 3, a fixed seat 12 is arranged on the inner wall of the hollow layer 31, the fixed seat 12 plays a role of fixing one end of a spring 13, a stress plate 15 is arranged on one side of the fixed seat 12, the stress plate 15 plays a role of fixing the other end of the spring 13, the spring 13 is arranged between the fixed seat 12 and the stress plate 15, two ends of the spring 13 are respectively fixedly connected with the outer walls of one sides of the fixed seat 12 and the stress plate 15, a bolt 16 is arranged on the outer wall of the other side of the stress plate 15, the stress plate 15 is fixedly connected with the inner wall of the protection bin 3 through the bolt 16, a winding 5 is arranged inside the protection bin 3, a cushion block 4 is arranged on the lower surface of the winding 5, the cushion block, the front end face of the clamping piece 9 is provided with a high-voltage terminal 10, the front end face of the winding 5 is provided with a high-voltage tap 8, a high-voltage connecting rod 7 is arranged between the high-voltage tap 8 and the high-voltage terminal 10, the high-voltage tap 8 is fixedly connected with the high-voltage terminal 10 through the high-voltage connecting rod 7, and the high-voltage connecting rod 7 plays a role in connecting the high-voltage tap 8 with the high-voltage terminal 10.

Further, the lower surface of bottom plate 2 is provided with supporting seat 1, and the lower surface welded connection of supporting seat 1 and bottom plate 2, and supporting seat 1 that the lower surface of bottom plate 2 set up plays the effect of supporting whole dry-type transformer, and supporting seat 1 and the lower surface welded connection of bottom plate 2 can be so that the connection between supporting seat 1 and the bottom plate 2 is more firm.

Further, the upper end of the clamping piece 9 is provided with two hanging rings 11, the two hanging rings 11 are symmetrical about the vertical center line of the protection bin 3, the hanging rings 11 play a role in assisting installation of the dry-type transformer, and the two hanging rings 11 are symmetrical about the vertical center line of the protection bin 3, so that installation of the dry-type transformer is more stable and safer.

Further, cushion 4 sets up on the lower surface of winding 5, and cushion 4 and winding 5 structure as an organic whole, and cushion 4 that 5 lower surfaces of winding set up plays the effect of supporting winding 5, and cushion 4 and winding 5 structure as an organic whole for winding 5 can be more stable under the support of cushion 4.

Further, the horizontal center line of the fixed seat 12 coincides with the horizontal center line of the stress plate 15, the fixed seat 12 plays a role in fixing one end of the spring 13, the stress plate 15 plays a role in fixing the other end of the spring 13, and the horizontal center line of the fixed seat 12 coincides with the horizontal center line of the stress plate 15, so that the spring 13 can be kept in a horizontal state.

Further, a top rod 14 is arranged on the outer wall of one side of the stress plate 15, the top rod 14 is arranged inside the spring 13, the top rod 14 arranged on the outer wall of one side of the stress plate 15 plays a role in limiting the deformation degree of the spring 13, and after the deformation is finished, the reset work of the spring 13 can be driven, so that the purpose of protecting the dry-type transformer is achieved.

The working principle is as follows: when the dry type transformer is used, the dry type transformer is connected with a circuit of a thermal power plant, the dry type transformer changes the voltage of alternating current by utilizing the principle of electromagnetic induction, the protection bin 3 is made of thin aluminum plates, the hollow layer 31 is positioned between the double-layer thin aluminum plates, after the dry type transformer is impacted by external force in the working process, the hollow layer 31 inside the protection bin 3 can feel the intensity of impact force, the stress plate 15 inside the hollow layer 31 drives the spring 13 to deform towards the fixed seat 12 after receiving the peak value of the impact force, and after the peak value of the impact force passes, the spring 13 resets under the action of the ejector rod 14 to drive the stress plate 15 to return to the original position, so that the purpose of protecting internal equipment of the dry type transformer is achieved, the protection bin 3 can effectively block dust, the effect of preventing the dust from polluting the inside of the dry type transformer.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a dry-type transformer for thermal power plant, includes bottom plate (2), its characterized in that: the upper surface of the bottom plate (2) is provided with a protection bin (3), a hollow layer (31) is arranged inside the outer wall of the protection bin (3), a fixing seat (12) is arranged on the inner wall of the hollow layer (31), a stress plate (15) is arranged on one side of the fixing seat (12), a spring (13) is arranged between the fixing seat (12) and the stress plate (15), two ends of the spring (13) are fixedly connected with the outer walls of the fixing seat (12) and one side of the stress plate (15) respectively, a bolt (16) is arranged on the outer wall of the other side of the stress plate (15), the stress plate (15) is fixedly connected with the inner wall of the protection bin (3) through the bolt (16), a winding (5) is arranged inside the protection bin (3), a cushion block (4) is arranged on the lower surface of the winding (5), and a clamping piece (9) is arranged on the upper surface of the winding (5), be provided with high voltage terminal (10) on the preceding terminal surface of folder (9), be provided with high-pressure tap (8) on the preceding terminal surface of winding (5), be provided with high-pressure connecting rod (7) between high-pressure tap (8) and high voltage terminal (10), high-pressure tap (8) are through high-pressure connecting rod (7) and high voltage terminal (10) fixed connection.

2. A dry-type transformer for thermal power plants according to claim 1, characterized in that: the lower surface of the bottom plate (2) is provided with a supporting seat (1), and the supporting seat (1) is connected with the lower surface of the bottom plate (2) in a welding mode.

3. A dry-type transformer for thermal power plants according to claim 1, characterized in that: the upper end of the clamping piece (9) is provided with two hanging rings (11), and the two hanging rings (11) are symmetrical about the vertical center line of the protection bin (3).

4. A dry-type transformer for thermal power plants according to claim 1, characterized in that: the cushion block (4) is arranged on the lower surface of the winding (5), and the cushion block (4) and the winding (5) are of an integrated structure.

5. A dry-type transformer for thermal power plants according to claim 1, characterized in that: the horizontal center line of the fixed seat (12) is superposed with the horizontal center line of the stress plate (15).

6. A dry-type transformer for thermal power plants according to claim 1, characterized in that: and an ejector rod (14) is arranged on the outer wall of one side of the stress plate (15), and the ejector rod (14) is arranged in the spring (13).