CN211654507U

CN211654507U - Grading voltage regulation test transformer

Info

Publication number: CN211654507U
Application number: CN202020690778.0U
Authority: CN
Inventors: 桂刚; 张锦春; 王帅; 夏云龙; 仰帅; 龚梦杰
Original assignee: Hefei Ruidian Electric Technology Consulting Service Co ltd
Current assignee: Hefei Ruidian Electric Technology Consulting Service Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-10-09
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses a graded voltage regulation test transformer, which comprises a suit clamp seat, an oil tank, a high-voltage wiring terminal, a low-voltage wiring terminal, a radiating pipe, a fan, a lift pump, a clamping groove, a supporting spring, a clamping plate, an oil tank cover, an on-load tap switch, a radiating fin, a placing groove and a measuring wiring terminal, wherein the clamping groove is arranged in the middle of the upper surface of the suit clamp seat; the transformer oil in the oil tank is extracted and dispatched by a lifting pump arranged on one side of the oil tank, and the transformer oil is sucked into a radiating pipe by the lifting pump for circulating radiation, so that the heat degree in the oil tank is reduced when the test transformer performs graded voltage regulation; the fan that sets up in the standing groove can be to one side be in operating condition's elevator pump and blow the heat dissipation.

Description

Grading voltage regulation test transformer

Technical Field

The utility model relates to a test transformer specifically is a hierarchical voltage regulation test transformer, belongs to test transformer application technical field.

Background

The test high-voltage transformer is produced by greatly improving the original similar products according to the standard of the test transformer of the electromechanical department, and the alternating current-direct current high-voltage test transformer is a novel product produced by improving the test transformer according to the national standard JB/T9641-plus 1999. The series of products have the characteristics of small volume, light weight, compact structure, complete functions, strong universality, convenient use and the like. The device is particularly suitable for performing insulation strength tests under power frequency or direct current high voltage on various high-voltage electrical equipment, electrical elements and insulating materials in electric power systems, industrial and mining enterprises, scientific research departments and the like. Is an important device essential in high-pressure tests.

The reference CN206074739U discloses a test transformer. The test transformer includes: the winding device comprises a square-shaped iron core, a primary side winding wire cake, a secondary side winding wire cake and a plurality of external connectors, wherein the primary side winding wire cake is arranged on one side of the square-shaped iron core in a penetrating mode, and the secondary side winding wire cake is arranged on the opposite side of the square-shaped iron core in a penetrating mode; adjacent primary side winding wire cakes in the primary side winding wire cakes are electrically connected through a first flexible wire, and adjacent secondary side winding wire cakes in the secondary side winding wire cakes are electrically connected through a second flexible wire; lead wires with different potentials in the lead wires of the primary side winding wire cake and the secondary side winding wire cake are electrically connected with different external connectors in the plurality of external connectors. By adopting the structure, the turn-to-turn short circuit test can be carried out under the condition of not disassembling the transformer by short-circuiting the corresponding external joint, the problem of poor repeatability of the test transformer for simulating the winding deformation is solved, the repeatability of the test transformer is improved, and the winding deformation of the transformer is simplified.

However, in the patent, the installed test transformer is not stable enough, and the temperature of the oil tank is too high due to the heat energy generated by the iron core and the winding in the oil tank, so that the safety of internal electronic devices is reduced, and the possibility of burning the transformer is increased.

In order to solve the technical problem, the utility model provides a following technical scheme.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hierarchical voltage regulation test transformer, the utility model discloses a set up the suit cassette and clamp this test transformer and place, clamp the oil tank body through the supporting spring and the cardboard of suit cassette inside, the restoring force of supporting spring makes the oil tank can not take place to rock, has promoted the stability of test transformer; when the transformer works, the transformer regulates and controls the bus voltage, and the radiating fins at the bottom of the sleeved clamping seat can absorb heat energy generated by an iron core and a winding in the oil tank, so that the safety of internal electronic devices is protected;

when the step voltage regulation test transformer is used for regulating voltage, the arranged on-load tap-changer is connected with the winding in the oil tank, so that the transformer is in an on-load state, the number of turns of the coil is changed by adjusting the tap joint of the corresponding winding, and the tap joint of one voltage of the transformer is switched to the tap joint of the other voltage, thereby achieving the purpose of changing the output voltage; the transformer oil in the oil tank is extracted and dispatched by a lifting pump arranged on one side of the oil tank, and the transformer oil is sucked into a radiating pipe by the lifting pump for circulating radiation, so that the heat degree in the oil tank is reduced when the test transformer performs graded voltage regulation; the fan that sets up in the standing groove can be to one side be in operating condition's elevator pump and blow the heat dissipation.

The utility model discloses the technical problem who solves does:

how to set an effective structure to solve the technical problems that when the transformer is tested to regulate voltage in a grading way in the prior art, the temperature of the oil tank is overhigh due to heat energy generated by an iron core and a winding in the oil tank, so that the safety of internal electronic devices is reduced, and the possibility of burning the transformer is increased;

the purpose of the utility model can be realized by the following technical scheme:

a graded voltage regulation test transformer comprises a set clamping seat, an oil tank, a high-voltage wiring terminal, a low-voltage wiring terminal, a radiating tube, a fan, a lifting pump, a clamping groove, a supporting spring, a clamping plate, an oil tank cover, a loaded tap switch, a radiating fin, a placing groove and a measuring wiring terminal, wherein the clamping groove is formed in the middle of the upper surface of the set clamping seat;

the utility model discloses a transformer oil tank, including oil tank upper end, oil tank upper end cover, low pressure binding post is installed to oil tank upper portion one side, and oil tank upper portion opposite side is installed and is measured binding post, it has on-load tap-changer to measure binding post one side, oil tank cover mid-mounting has high-pressure binding post, oil tank surface one side fixed mounting has the cooling tube, the elevator pump is installed to cooling tube lower extreme one side, the standing groove has been seted up to suit cassette one side, the elevator pump is placed in the standing groove.

Preferably, the bottom of the clamping groove is clamped with a radiating fin which is matched with the oil tank.

Preferably, the clamping groove is of a cylindrical hollow structure, and the clamping plate is matched with the bottom of the oil tank.

Preferably, the on-load tap changer is connected with an internal winding of the oil tank.

Preferably, the high-voltage wiring terminal, the low-voltage wiring terminal and the measuring wiring terminal are respectively connected with corresponding windings inside the oil tank.

Preferably, a fan is installed on one side of the placing groove and arranged on one side of the lifting pump.

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

1. according to the graded voltage regulation test transformer, the test transformer is clamped and placed through the sleeving clamping seat, the oil tank body is clamped through the supporting spring and the clamping plate in the sleeving clamping seat, the oil tank cannot shake due to the restoring force of the supporting spring, and the stability of the test transformer is improved; when the transformer works, the transformer regulates and controls the bus voltage, and the radiating fins at the bottom of the sleeved clamping seat can absorb heat energy generated by the iron core and the winding in the oil tank, so that the safety of internal electronic devices is protected.

2. When the step voltage regulation test transformer is used for regulating voltage, the arranged on-load tap-changer is connected with the winding in the oil tank, so that the transformer is in an on-load state, the number of turns of the coil is changed by adjusting the tap joint of the corresponding winding, and the tap joint of one voltage of the transformer is switched to the tap joint of the other voltage, thereby achieving the purpose of changing the output voltage; the transformer oil in the oil tank is extracted and dispatched by a lifting pump arranged on one side of the oil tank, and the transformer oil is sucked into a radiating pipe by the lifting pump for circulating radiation, so that the heat degree in the oil tank is reduced when the test transformer performs graded voltage regulation; the fan that sets up in the standing groove can be to one side be in operating condition's elevator pump and blow the heat dissipation.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

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

Fig. 2 is a side view of the overall structure of the present invention.

Fig. 3 is a sectional view of the structure of the package-on card seat of the present invention.

In the figure: 1. sleeving a clamping seat; 2. an oil tank; 3. a high-voltage wiring terminal; 4. a low-voltage wiring terminal; 5. a radiating pipe; 6. a fan; 7. a lift pump; 8. clamping grooves; 9. a support spring; 10. clamping a plate; 11. a fuel tank cap; 12. an on-load tap-changer; 13. a heat sink; 14. a placement groove; 15. and measuring the wiring terminal.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, a transformer for a graded voltage regulation test comprises a set clamping seat 1, an oil tank 2, a high-voltage terminal 3, a low-voltage terminal 4, a radiating pipe 5, a fan 6, a lift pump 7, a clamping groove 8, a supporting spring 9, a clamping plate 10, an oil tank cover 11, a loaded tap switch 12, a radiating fin 13, a placing groove 14 and a measuring terminal 15, wherein the middle part of the upper surface of the set clamping seat 1 is provided with a clamping groove 8, the supporting spring 9 is symmetrically spot-welded on the inner side wall of the clamping groove 8, the front end of the supporting spring 9 is fixed with the clamping plate 10, and the upper end of the clamping plate 10 is movably;

2 up end cover suit in oil tank are connected with

fuel tank cap

11, 2 inside iron cores that are equipped with of oil tank, winding and transformer oil, low voltage binding post 4 is installed to 11 upper portion one sides of fuel tank cap, 11 upper portion opposite sides of fuel tank cap are installed and are measured binding post 15, measure binding post 15 one side and install on-load tap-

changer

12, 11 mid-mounting in fuel tank cap has high

voltage binding post

3, 2 surface one side fixed mounting in oil tank have cooling tube 5, elevator pump 7 is installed to 5 lower extreme one sides of cooling tube, standing groove 14 has been seted up to 1 one side of suit cassette, elevator pump 7 is placed in standing.

The bottom of the clamping groove 8 is clamped with a radiating fin 13, the radiating fin 13 is matched with the oil tank 2, and the radiating fin 13 at the bottom of the sleeved clamping seat 1 can absorb heat energy generated by an iron core and a winding in the oil tank 2, so that the safety of an internal electronic device is protected.

Wherein, clamping groove 8 is the cylinder hollow structure, and cardboard 10 and oil tank 2 bottom are mutually supported.

Wherein the on-load tap-changer 12 is connected with the internal winding of the oil tank 2.

Wherein, high voltage binding post 3, low voltage binding post 4 and measurement binding post 15 are connected with the inside corresponding winding of oil tank 2 respectively.

Wherein, fan 6 is installed to standing groove 14 one side, and fan 6 sets up in elevator pump 7 one side, and fan 6 in the standing groove 14 can be to one side be in operating condition's elevator pump 7 and blow the heat dissipation.

When the utility model is used, a user firstly clamps and places the test transformer in the sleeving clamping seat 1, the oil tank 2 body is clamped through the supporting spring 9 and the clamping plate 10 in the sleeving clamping seat 1, the restoring force of the supporting spring 9 ensures that the oil tank 2 can not shake, and the stability of the test transformer is improved; when the transformer works, the transformer regulates and controls the bus voltage, and the heat radiating fins 13 at the bottom of the sleeved clamping seat 1 can absorb the heat energy generated by the iron core and the winding in the oil tank 2, so that the safety of internal electronic devices is protected; when the step voltage regulation test transformer is used for regulating voltage, the transformer is in a loaded state by connecting the set on-load tap-changer 12 with the winding in the oil tank 2, the number of turns of the coil is changed by adjusting the tap joint of the corresponding winding, and the tap joint of a certain voltage of the transformer is switched to the tap joint of another voltage, so that the purpose of changing the output voltage is achieved; transformer oil in the oil tank 2 is extracted and dispatched through a lifting pump 7 arranged on one side of the oil tank 2, and the transformer oil is sucked into a radiating pipe 5 through the lifting pump 7 to be circularly radiated, so that the heat degree in the oil tank 2 during the step voltage regulation of the test transformer is reduced; the fan 6 provided in the placement tank 14 can blow heat to the lift pump 7 whose one side is in operation.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not 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

1. A graded voltage regulation test transformer comprises a sleeving clamping seat (1), an oil tank (2), a high-voltage wiring terminal (3), a low-voltage wiring terminal (4), a radiating pipe (5), a fan (6), a lifting pump (7), a clamping groove (8), a supporting spring (9), a clamping plate (10), an oil tank cover (11), a loaded tap switch (12), a radiating fin (13), a placing groove (14) and a measuring wiring terminal (15), and is characterized in that the middle of the upper surface of the sleeving clamping seat (1) is provided with the clamping groove (8), the supporting spring (9) is symmetrically spot-welded on the inner side wall of the clamping groove (8), the clamping plate (10) is fixed at the front end of the supporting spring (9), and the upper end of the clamping plate (10) is movably connected with the side wall of the;

oil tank (2) up end suit is connected with oil tank cap (11), inside iron core, winding and the transformer oil of being equipped with of oil tank (2), low pressure binding post (4) are installed to oil tank cap (11) upper portion one side, and oil tank cap (11) upper portion opposite side is installed and is measured binding post (15), it installs on-load tap-changer (12) to measure binding post (15) one side, oil tank cap (11) mid-mounting has high pressure binding post (3), oil tank (2) surface one side fixed mounting has cooling tube (5), elevator pump (7) are installed to cooling tube (5) lower extreme one side, standing groove (14) have been seted up to suit cassette (1) one side, elevator pump (7) are placed in standing groove (14).

2. The step voltage regulation test transformer of claim 1, wherein a cooling fin (13) is clamped at the bottom of the clamping groove (8), and the cooling fin (13) is matched with the oil tank (2).

3. The step voltage regulation test transformer of claim 1, wherein the clamping groove (8) is a cylindrical hollow structure, and the clamping plate (10) is matched with the bottom of the oil tank (2).

4. A step-variable voltage test transformer according to claim 1, characterised in that said on-load tap-changer (12) is connected to the internal winding of the tank (2).

5. The step-voltage regulating test transformer according to claim 1, wherein the high voltage terminal (3), the low voltage terminal (4) and the measuring terminal (15) are respectively connected with corresponding windings inside the oil tank (2).

6. The step voltage regulation test transformer of claim 1, wherein a fan (6) is installed on one side of the placing groove (14), and the fan (6) is arranged on one side of the lifting pump (7).