CN219286177U

CN219286177U - Oil-immersed on-load voltage regulating power transformer

Info

Publication number: CN219286177U
Application number: CN202320364846.8U
Authority: CN
Inventors: 王中庆; 李明多
Original assignee: LUTE ELECTRIC CO Ltd
Current assignee: LUTE ELECTRIC CO Ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-06-30
Anticipated expiration: 2033-03-02

Abstract

The utility model discloses an oil-immersed on-load voltage-regulating power transformer, which relates to the technical field of power transformers and comprises a machine shell, wherein a cooling component is arranged on the surface of the machine shell and comprises a mounting cylinder, a plurality of radiating fins, a first annular cooling pipe, a second annular cooling pipe, a connecting pipe, a water storage mechanism and a protection component, the mounting cylinder is fixedly arranged on the surface of the machine shell, and a plurality of radiating fins which are equidistantly arranged are fixedly arranged on the surface of the mounting cylinder, and the oil-immersed on-load voltage-regulating power transformer has the beneficial effects that: the cooling liquid spiral rises to transfer heat to the surface of a plurality of fin, and a plurality of gas outlet blows to the surface of fin under the effect of air-cooler for air flow improves radiating efficiency, and the cooling liquid flows into the second annular cooling tube again under the effect of connecting pipe, carries out circulating cold and heat exchange, and the potential monitoring device in the electric leakage alarm main part can monitor this potential difference and send alarm signal and remind the staff to reduce the potential safety hazard.

Description

Oil-immersed on-load voltage regulating power transformer

Technical Field

The utility model relates to a load voltage regulating power transformer, in particular to an oil-immersed on-load voltage regulating power transformer, and belongs to the technical field of power transformers.

Background

A power transformer is a stationary electric device for changing an ac voltage (current) of a certain value into another voltage (current) of the same frequency or several different values, and is one of main devices of a power plant and a substation;

the oil-immersed power transformer disclosed by the application number CN201420646989.9 aims at providing an oil-immersed power transformer which has good heat dissipation and cooling effects and is suitable for outdoor environments, and the technical scheme is characterized in that cooling boxes are arranged on the left side and the right side of an oil tank, an oil inlet pipe and an oil outlet pipe which are respectively connected with the oil tank in a conducting manner are arranged on the cooling boxes, and an oil pump for pumping transformer oil in the tank into the cooling boxes is arranged on the oil outlet pipe; the cooling box comprises a top plate, a bottom plate and a plurality of side plates, wherein cooling liquid is arranged in the top plate, a waterproof cover is covered on the top plate, the waterproof cover comprises a top cover and side walls, a plurality of cooling fins are arranged on one surface of the top plate, which faces away from the waterproof cover, and a heat insulation structure is arranged between each cooling fin and the top cover; the oil-immersed on-load voltage-regulating transformer with good heat dissipation performance disclosed by the application number CN202020467051.6 is suitable for the oil-immersed power transformer, and after the temperature inside the shell exceeds the set value of the temperature sensing switch, the temperature sensing switch generates an electric signal to the relay, at the moment, the heat dissipation fan is started by the relay, the water pump in the water storage tank is started, the condensing pipe is pumped into the condensing pipe by the water pump, and thus, the heat dissipation effect is better by utilizing the heat dissipation fan and the condensing pipe for heat exchange, so that the service life of the transformer is prolonged;

however, the two transformers have the following defects in the use process:

1) When in actual use, as the heat generation rate of the transformer is higher, the heat dissipation coverage area of the two oil immersed transformers is smaller, the heat dissipation and cooling functions are not perfect, meanwhile, a better protection device is not available, when the shell is electrified due to ground aging corrosion, workers cannot find the shell in time easily, and potential safety hazards are increased.

Disclosure of Invention

The utility model aims to provide an oil-immersed on-load voltage-regulating power transformer, which aims to solve the problems that the heat dissipation coverage area of the two oil-immersed transformers provided in the background art is small, the heat dissipation and cooling functions are not perfect, the cooling efficiency is low, a protective device is not good, the shell is electrified due to ground aging and corrosion, and workers cannot find the shell in time.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an oil-immersed on-load voltage regulation power transformer, includes the casing, the surface of casing is equipped with cooling module, cooling module includes mounting cylinder, a plurality of fin, first annular cooling tube, second annular cooling tube, connecting pipe, water storage mechanism and protection subassembly, the fixed surface that sets up at the casing of mounting cylinder, the fixed surface that is equipped with a plurality of equidistance and sets up of mounting cylinder, a plurality of fixed first annular cooling tube that is equipped with between the fin, the fixed inner wall that sets up at the casing of second annular cooling tube, fixed connecting pipe that is equipped with between the top of first annular cooling tube and the top of second annular cooling tube, the roof is installed through a plurality of screw fixed on the casing top.

Preferably, the water storage mechanism comprises a water storage tank and a reflux pump, the water storage tank is fixedly arranged at the bottom end of the shell, the water outlet end of the reflux pump is fixedly connected with the bottom end of the first annular cooling pipe, the water inlet end of the reflux pump is fixedly connected with one side of the water storage tank, and one side of the top end of the water storage tank is fixedly connected with the bottom end of the second annular cooling pipe.

Preferably, the protection subassembly includes connecting block, magnetic path and electric leakage alarm main part, the fixed one side that sets up on the roof surface of connecting block, the top magnetism of connecting block is connected with the magnetic path, the fixed electric leakage alarm main part that is equipped with in top of magnetic path.

Preferably, the top of roof is fixed and is equipped with the fixed disk, the both sides on fixed disk top are all fixed and are equipped with the installation ear.

Preferably, the bottom end of the inner wall of the shell is fixedly provided with a mounting plate.

Preferably, the bottom end fixing of storage water tank is equipped with cold wind chamber, the gas outlet that a plurality of equidistance set up has been seted up to the surface in cold wind chamber, the bottom end fixing in cold wind chamber is equipped with the air-cooler, the end of giving vent to anger of air-cooler is fixed with one side in cold wind chamber bottom and is equipped with the ventilation pipe.

Preferably, the opposite side on roof surface is fixed and is equipped with switch panel, switch panel's surface is equipped with backwash pump switch, electric leakage alarm main part switch and air-cooler switch, backwash pump passes through backwash pump switch and power electric connection, electric leakage alarm main part passes through electric leakage alarm main part switch and power electric connection, the air-cooler passes through air-cooler switch and power electric connection.

Compared with the related art, the oil-immersed on-load voltage regulating transformer provided by the utility model has the following beneficial effects:

the cooling liquid that needs to cool down in the storage water tank is carried to first annular cooling tube in the effect of backwash pump, first annular cooling tube sets up between a plurality of fin, improve radiating contact surface, the cooling liquid spiral rises and carries out the blowing to the surface of fin through a plurality of gas outlet that cold wind chamber surface was seted up under the effect of air-cooler, accelerate the air flow and improve radiating efficiency, the cooling liquid flows into the second annular cooling tube again under the effect of connecting pipe, carry out circulating cold and hot exchange, if transformer electric leakage, will have the potential difference between connecting wire and the earth connection, the potential monitoring device in the electric leakage alarm main part can monitor this potential difference, and utilize alarm device to send alarm signal to remind the staff, carry out dual protection and reduce the potential safety hazard.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is a schematic view of the bottom view of the present utility model;

fig. 4 is a schematic cross-sectional view of the present utility model.

Fig. 5 is an enlarged schematic view of the protective assembly of the present utility model.

In the figure: 1. a housing; 2. a cooling assembly; 3. a top plate; 4. a fixed plate; 5. a protective assembly; 6. a mounting ear; 7. a mounting plate; 8. a switch panel; 9. a cold air chamber; 10. an air outlet; 11. an air cooler; 12. a ventilation pipe; 21. a mounting cylinder; 22. a heat sink; 23. a first annular cooling tube; 24. a second annular cooling tube; 25. a connecting pipe; 26. a water storage mechanism; 27. a water storage tank; 28. a reflux pump; 51. a connecting block; 52. a magnetic block; 53. and a leakage alarm body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

referring to fig. 1-5, the utility model provides an oil-immersed on-load voltage-regulating transformer, which comprises a casing 1, wherein a cooling component 2 is arranged on the surface of the casing 1, the cooling component 2 comprises a mounting cylinder 21, a plurality of cooling fins 22, a first annular cooling pipe 23, a second annular cooling pipe 24, a connecting pipe 25, a water storage mechanism 26 and a protection component 5, the mounting cylinder 21 is fixedly arranged on the surface of the casing 1, a plurality of cooling fins 22 which are equidistantly arranged are fixedly arranged on the surface of the mounting cylinder 21, a first annular cooling pipe 23 is fixedly arranged between the plurality of cooling fins 22, a second annular cooling pipe 24 is fixedly arranged on the inner wall of the casing 1, a connecting pipe 25 is fixedly arranged between the top end of the first annular cooling pipe 23 and the top end of the second annular cooling pipe 24, and a top plate 3 is fixedly arranged on the top end of the casing 1 through a plurality of screws;

the water storage mechanism 26 comprises a water storage tank 27 and a reflux pump 28, the water storage tank 27 is fixedly arranged at the bottom end of the shell 1, the water outlet end of the reflux pump 28 is fixedly connected with the bottom end of the first annular cooling pipe 23, the water inlet end of the reflux pump 28 is fixedly connected with one side of the water storage tank 27, and one side of the top end of the water storage tank 27 is fixedly connected with the bottom end of the second annular cooling pipe 24;

a fixed disc 4 is fixedly arranged at the top end of the top plate 3, and mounting lugs 6 are fixedly arranged on two sides of the top end of the fixed disc 4;

the bottom end of the inner wall of the shell 1 is fixedly provided with a mounting plate 7;

a cold air cavity 9 is fixedly arranged at the bottom end of the water storage tank 27, a plurality of air outlets 10 which are equidistantly arranged are formed in the surface of the cold air cavity 9, an air cooler 11 is fixedly arranged at the bottom end of the cold air cavity 9, and a ventilation pipe 12 is fixedly arranged at the air outlet end of the air cooler 11 and one side of the bottom end of the cold air cavity 9;

a switch panel 8 is fixedly arranged on the other side of the surface of the top plate 3, a reflux pump switch, a leakage alarm main body switch and an air cooler switch are arranged on the surface of the switch panel 8, the reflux pump 28 is electrically connected with a power supply through the reflux pump switch, and the air cooler 11 is electrically connected with the power supply through the air cooler switch;

specifically, as shown in fig. 1, 2, 3 and 4, the whole oil-immersed on-load voltage-regulating transformer is placed at a designated position, then other components are installed, the transformer is installed on the installation disc 7, heat is transferred to the cooling liquid in the second annular cooling tube 24 after the transformer works, the bottom end of the second annular cooling tube 24 is connected with the top end of the water storage tank 27, the cooling liquid needing to be cooled in the water storage tank 27 is conveyed to the first annular cooling tube 23 under the action of the reflux pump 28, the first annular cooling tube 23 is arranged among a plurality of cooling fins 22, the cooling fins 22 are arranged on the surface of the installation cylinder 21 at equal intervals to improve the heat dissipation contact surface, the cooling liquid is spirally lifted to transfer the heat to the surface of the cooling fins 22, the surface of the cooling fins 22 is blown by a plurality of air outlets 10 formed on the surface of the cold air chamber 9 under the action of the cold air blower 11, the cooling liquid flows into the second annular cooling tube 24 again under the action of the connecting tube 25 to improve the heat dissipation efficiency, and the circulating cold and hot air exchange is performed.

Example 2:

the protection component 5 comprises a connecting block 51, a magnetic block 52 and a leakage alarm main body 53, wherein the connecting block 51 is fixedly arranged on one side of the surface of the top plate 3, the magnetic block 52 is magnetically connected to the top end of the connecting block 51, and the leakage alarm main body 53 is fixedly arranged on the top end of the magnetic block 52;

the electric leakage alarm main body 53 is electrically connected with a power supply through an electric leakage alarm main body switch;

specifically, as shown in fig. 1, 2 and 5, firstly, if the transformer leaks electricity, a potential difference exists between the connecting wire and the ground wire, the potential monitoring device in the leakage alarm main body 53 can monitor the potential difference, and an alarm signal is sent by the alarm device to remind a worker to perform double protection, so that potential safety hazards are reduced, and the magnetic block 52 and the connecting block 51 are magnetically connected, so that the disassembly and maintenance are convenient.

Working principle: when the oil-immersed on-load voltage-regulating power transformer is particularly used, the whole oil-immersed on-load voltage-regulating power transformer is placed at a designated position, then other components are installed, the transformer is installed on the installation plate 7, heat is transferred to cooling liquid in the second annular cooling pipe 24 after the transformer works, the bottom end of the second annular cooling pipe 24 is connected with the top end of the water storage tank 27, cooling liquid needing to be cooled in the water storage tank 27 is conveyed to the first annular cooling pipe 23 under the action of the reflux pump 28, the first annular cooling pipe 23 is arranged among a plurality of cooling fins 22, the cooling fins 22 are arranged on the surface of the installation cylinder 21 at equal intervals, the heat is transferred to the surface of the cooling fins 22 through the equal distance, the cooling liquid is blown up through a plurality of air outlets 10 formed on the surface of the cooling fins 22 under the action of the air cooler 11, the air flow is accelerated, the cooling liquid flows into the second annular cooling pipe 24 again under the action of the reflux pump 28, the circulating connection wire is exchanged between the cooling liquid and the electric potential difference and the electric potential leakage of a magnetic field monitoring device is reduced, and an alarm potential difference is used for the magnetic potential difference is reduced, and an alarm device is used for the magnetic potential safety protection is connected with a magnetic field monitoring connection block 52, and an alarm potential leakage is convenient to be detached to a main body.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil-immersed on-load voltage regulation power transformer, includes casing (1), its characterized in that, the surface of casing (1) is equipped with cooling module (2), cooling module (2) are including installation section of thick bamboo (21), a plurality of fin (22), first annular cooling tube (23), second annular cooling tube (24), connecting pipe (25), water storage mechanism (26) and protection subassembly (5), the fixed surface that sets up at casing (1) of installation section of thick bamboo (21), the fixed fin (22) that are equipped with a plurality of equidistance setting of surface of installation section of thick bamboo (21), a plurality of be equipped with first annular cooling tube (23) between fin (22), the fixed inner wall that sets up at casing (1) of second annular cooling tube (24), fixed connecting pipe (25) that are equipped with between the top of first annular cooling tube (23) and the top of second annular cooling tube (24), roof (3) are installed on the top of casing (1) through a plurality of screw fixed mounting.

2. An oil immersed on-load voltage regulating transformer as claimed in claim 1, wherein: the water storage mechanism (26) comprises a water storage tank (27) and a reflux pump (28), the water storage tank (27) is fixedly arranged at the bottom end of the shell (1), the water outlet end of the reflux pump (28) is fixedly connected with the bottom end of the first annular cooling pipe (23), the water inlet end of the reflux pump (28) is fixedly connected with one side of the water storage tank (27), and one side of the top end of the water storage tank (27) is fixedly connected with the bottom end of the second annular cooling pipe (24).

3. An oil immersed on-load voltage regulating transformer as claimed in claim 2, wherein: the protection component (5) comprises a connecting block (51), a magnetic block (52) and a leakage alarm main body (53), wherein the connecting block (51) is fixedly arranged on one side of the surface of the top plate (3), the magnetic block (52) is magnetically connected to the top end of the connecting block (51), and the leakage alarm main body (53) is fixedly arranged on the top end of the magnetic block (52).

4. An oil immersed on-load voltage regulating transformer as claimed in claim 1, wherein: the top of roof (3) is fixed and is equipped with fixed disk (4), both sides on fixed disk (4) top are all fixed and are equipped with mounting ear (6).

5. An oil immersed on-load voltage regulating transformer as claimed in claim 1, wherein: the bottom end of the inner wall of the shell (1) is fixedly provided with a mounting disc (7).

6. An oil immersed on-load voltage regulating transformer according to claim 3, wherein: the bottom end fixing of storage water tank (27) is equipped with cold wind chamber (9), gas outlet (10) that a plurality of equidistance set up have been seted up to the surface in cold wind chamber (9), the bottom end fixing in cold wind chamber (9) is equipped with air-cooler (11), the fixed ventilation pipe (12) that are equipped with in one side of the end of giving vent to anger of air-cooler (11) and cold wind chamber (9) bottom.

7. The oil-immersed on-load voltage regulating transformer of claim 6, wherein: the utility model discloses a solar energy collection device, including roof (3) and air-cooler, roof, air-cooler (11) and air-cooler switch, the opposite side on roof (3) surface is fixed to be equipped with switch panel (8), the surface of switch panel (8) is equipped with backwash pump switch, electric leakage alarm main part switch and air-cooler switch, backwash pump (28) pass through backwash pump switch and power electric connection, electric leakage alarm main part (53) pass through electric leakage alarm main part switch and power electric connection, air-cooler (11) pass through air-cooler switch and power electric connection.