CN209947609U

CN209947609U - Energy-saving oil-immersed transformer

Info

Publication number: CN209947609U
Application number: CN201921337444.9U
Authority: CN
Inventors: 陈书荣
Original assignee: Chongqing Jiu Neng Holdings Co Ltd
Current assignee: Chongqing Jiu Neng Holdings Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-01-14
Anticipated expiration: 2029-08-15

Abstract

The utility model provides an energy-saving oil-immersed transformer, which comprises an oil tank filled with transformer oil inside, wherein the top of the oil tank is fixedly and hermetically connected with a tank cover, a tubular oil level indicator, a mercury thermometer and three high-voltage connecting rods are fixed on the tank cover, three low pressure connecting rod, a zero phase connecting rod and non-excitation tapping switch, inside tubular oil level gaugember and mercury thermometer stretched into the oil tank, the sleeve pipe has been cup jointed on high-low pressure connecting rod and the zero phase connecting rod, the oil tank bottom is fixed with three relative channel-section steels down of terminal surface of group, the centre gripping is fixed with the iron-cored post that soaks in transformer oil between two lower channel-section steels's the terminal surface, the channel-section steel centre gripping is fixed on the iron-cored post upper end through two, every goes up the channel-section steel and passes through connecting plate and case lid bottom surface fixed connection, the iron-cored post is long circular and adopts wu steel silicon steel sheet G85 to make, a primary winding and secondary winding have been cup jointed to the iron-cored post periphery. The oil-immersed transformer can reduce internal loss and realize energy conservation.

Description

Energy-saving oil-immersed transformer

Technical Field

The utility model relates to a transformer technical field, concretely relates to energy-conserving oil-immersed transformer.

Background

A transformer is a stationary electrical device for transforming ac voltage and current to transmit ac power, and is a device for transforming ac voltage (current) of a certain value into another voltage (current) of the same frequency or different values. The electric energy transmission is realized according to the principle of electromagnetic induction, when alternating current is conducted to a primary winding, alternating magnetic flux is generated, the alternating magnetic flux induces alternating electromotive force in a secondary winding through the magnetic conduction function of an iron core, and the level of the secondary induced electromotive force is related to the number of turns of the primary winding and the secondary winding, namely the voltage is in direct proportion to the number of turns. The transformer is classified into an oil-immersed transformer and a dry-type transformer according to insulation and cooling conditions. And the inventor of the utility model discovers through research that present oil-immersed transformer leads to the internal loss to promote by a wide margin because design and the material factor unshakable in one's determination, and present oil-immersed transformer does not keep watch on transformer operating temperature moreover, if operating temperature is too high can cause the transformer to damage.

SUMMERY OF THE UTILITY MODEL

Design and material factor to current oil-immersed transformer's iron core lead to the internal loss to promote by a wide margin, and current oil-immersed transformer does not keep watch on transformer operating temperature moreover, if operating temperature is too high can cause the technical problem that the transformer damaged, the utility model provides an energy-conserving oil-immersed transformer.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an energy-saving oil-immersed transformer comprises an oil tank filled with transformer oil, wherein the top of the oil tank is fixedly and hermetically connected with a tank cover, a tubular oil level gauge, a mercury thermometer, three high-voltage connecting rods, three low-voltage connecting rods, a zero-phase connecting rod and an off-circuit tap switch are fixed on the tank cover, the tubular oil level gauge and the mercury thermometer extend into the oil tank, high-voltage sleeves, low-voltage sleeves and zero-phase sleeves are sleeved on the high-voltage connecting rods, the low-voltage connecting rods and the zero-phase connecting rods in a one-to-one correspondence manner, three groups of lower channel steels with opposite end faces are fixed at the bottom of the oil tank, the lower end of a core column immersed in the transformer oil is clamped and fixed between the end faces of the two lower channel steels, the upper end of the core column is clamped and fixed through two upper channel steels, and each, the iron core post is long circle form and adopts wu steel silicon steel sheet G85 to make, every group a primary winding and a secondary winding have been cup jointed to the periphery of iron core post, a set of iron core post the one end of secondary winding corresponds the electricity with a low pressure connecting rod and is connected, three iron core posts of group the other end of secondary winding is connected the back and is connected with a zero looks connecting rod electricity, a set of iron core post the one end of primary winding corresponds the electricity with a high pressure connecting rod and is connected, three iron core posts of group the other end of primary winding is connected the back and is connected with the excitation-free tapping switch electricity, oil tank bottom fixedly connected with supports the base, oil tank lateral wall bottom is provided with the drain plug.

Compared with the prior art, the energy-saving oil-immersed transformer provided by the utility model can display the specific oil level of transformer oil inside the oil tank through the tubular oil level gauge, monitor the internal operating temperature of the oil tank through the mercury thermometer, generally, it is suitable to monitor the temperature of the upper oil layer, if the temperature of the upper oil layer of the transformer is too high, the transformer can be shut down artificially, the damage to the operation of the transformer caused by the too high oil temperature is avoided, the high-voltage power supply input from the outside can be connected through the high-voltage connecting rod, the low-voltage power supply after voltage reduction can be led out through the low-voltage connecting rod, the lower end of the iron core column immersed in the transformer oil is clamped and fixed between the end surfaces of the two lower channel steels, the upper end of the iron core column is clamped and fixed through the two upper channel steels, each upper channel steel is fixedly connected with the angle steel fixed on the bottom surface of the box cover through, therefore, the internal loss of the oil-immersed transformer can be greatly reduced to realize energy conservation, the number of turns of a primary winding coil of the transformer can be changed through the non-excitation tap switch so as to achieve the purpose of adjusting the secondary side voltage, and the transformer oil in the oil tank can be discharged through the oil discharging plug so as to be convenient for checking the oil quality.

Further, the bottom of the oil tank is provided with an oil drain plug.

Furthermore, the outer side walls of the periphery of the oil tank are connected with corrugated sheets.

Furthermore, a nameplate is fixedly arranged in front of the oil tank.

Drawings

Fig. 1 is the utility model provides an energy-conserving oil-immersed transformer looks structural schematic mainly.

Fig. 2 is a schematic view of a connection structure of core columns inside the oil tank of fig. 1.

Fig. 3 is the utility model provides an energy-conserving oil-immersed transformer overlooks the structure sketch map.

In the figure, 1, a fuel tank; 2. a box cover; 3. a tubular oil level gauge; 4. a mercury thermometer; 5. a high pressure connecting rod; 6. a low pressure connecting rod; 7. a zero phase connecting rod; 8. an off-circuit tap changer; 9. a channel steel is arranged; 10. a core limb; 11. feeding channel steel; 12. a connecting plate; 13. angle steel; 14. a support base; 15. an oil drain plug; 16. a drain plug; 17. a corrugated sheet; 18. a nameplate; 100. transformer oil.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the present invention provides an energy-saving oil-immersed transformer, which includes an oil tank 1 filled with transformer oil 100, a tank cover 2 is fixed to the top of the oil tank 1, a tubular oil level gauge 3, a mercury thermometer 4, three high-voltage connecting rods 5, three low-voltage connecting rods 6, a zero-phase connecting rod 7 and a non-excitation tap switch 8 are fixed to the tank cover 2, the tubular oil level gauge 3 and the mercury thermometer 4 both extend into the oil tank 1, high-voltage sleeves, low-voltage sleeves and zero-phase sleeves are sleeved on the high-voltage connecting rods 5, the low-voltage connecting rods 6 and the zero-phase connecting rods 7 in a one-to-one correspondence manner, that is, the high-voltage sleeves are sleeved on the high-voltage connecting rods 5, the low-voltage sleeves are sleeved on the low-voltage connecting rods 6, the zero-phase sleeves are sleeved on the zero-phase connecting rods 7, three sets, namely, three groups of lower channel steel 9 are fixed at the bottom of the oil tank 1, each group of lower channel steel 9 comprises two lower channel steel, the end surfaces of the two lower channel steel are opposite, the lower end of an iron core column 10 immersed in transformer oil is clamped and fixed between the two lower channel steel 9 with opposite end surfaces between the end surfaces of the two lower channel steel 9, namely, the iron core column 10 is immersed in the transformer oil, the lower end of the iron core column is clamped and fixed between the two lower channel steel 9 with opposite end surfaces, the upper end of the iron core column 10 is clamped and fixed through two upper channel steel 11, each upper channel steel 11 is fixedly connected with an angle steel 13 fixed at the bottom surface of the tank cover 2 through a connecting plate 12, the iron core column 10 is in a long circle (or straight circle) shape and is made of the existing wu-steel silicon steel sheet G85, a primary winding and a secondary winding are sleeved on the periphery of each group of the iron core column 10, one, three core limb 10 the other end of secondary winding is connected the back and is connected with a zero phase connecting rod 7 electricity, a set of core limb 10 the one end of primary winding corresponds the electricity with a high-voltage connecting rod 5 and is connected, three core limb 10 the other end of primary winding is connected the back and is connected with non-excitation tap-changer 8 electricity, non-excitation tap-changer 8's concrete structure is the prior art that technical personnel are familiar in the field, 1 bottom fixedly connected with of oil tank supports

base

14, 1 lateral wall bottom of oil tank is provided with oil drain plug 15.

Compared with the prior art, the energy-saving oil-immersed transformer provided by the utility model can display the specific oil level of transformer oil inside the oil tank through the tubular oil level gauge, monitor the internal operating temperature of the oil tank through the mercury thermometer, generally, it is appropriate to monitor the temperature of the upper oil layer, if the temperature of the upper oil layer of the transformer is too high, the transformer needs to be shut down manually, the damage to the operation of the transformer caused by the too high oil temperature is avoided, the high-voltage power supply input from the outside can be connected through the high-voltage connecting rod, the low-voltage power supply after voltage reduction can be led out through the low-voltage connecting rod, the lower end of the iron core column immersed in the transformer oil is clamped and fixed between the end surfaces of the two lower channel steels, the upper end of the iron core column is clamped and fixed through the two upper channel steels, each upper channel steel is fixedly connected with the angle steel fixed on the bottom surface of the box, therefore, the internal loss of the oil-immersed transformer can be greatly reduced to realize energy conservation, the number of turns of a primary winding coil of the transformer can be changed through the non-excitation tap switch so as to achieve the purpose of adjusting the secondary side voltage, and the transformer oil in the oil tank can be discharged through the oil discharging plug so as to be convenient for checking the oil quality.

As a specific embodiment, please refer to fig. 1, a drain plug 16 is disposed at the bottom of the oil tank 1, and the drain plug 16 is used for removing the original transformer oil in the oil tank when the transformer oil in the oil tank needs to be replaced.

As a specific embodiment, please refer to fig. 3, a corrugated sheet 17 is connected to an outer peripheral wall of the oil tank 1, and the corrugated sheet 17 has a breathing function to compensate a volume change of the transformer oil caused by a temperature change, that is, a shell of the oil tank 1 can adapt to an expansion of the transformer oil by its own elasticity.

As an embodiment, referring to fig. 1, a nameplate 18 is fixedly arranged on the front of the fuel tank 1, the nameplate 18 can be fixed on the front of the fuel tank 1 by a cross screw, and a gasket can be additionally arranged between the nameplate 18 and the fuel tank 1, so that the nameplate 18 can be more stably fixed on the front of the fuel tank 1.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. An energy-saving oil-immersed transformer is characterized by comprising an oil tank filled with transformer oil, wherein the top of the oil tank is fixedly and hermetically connected with a tank cover, a tubular oil level gauge, a mercury thermometer, three high-voltage connecting rods, three low-voltage connecting rods, a zero-phase connecting rod and a non-excitation tap switch are fixed on the tank cover, the tubular oil level gauge and the mercury thermometer extend into the oil tank, high-voltage sleeves, low-voltage sleeves and zero-phase sleeves are sleeved on the high-voltage connecting rods, the low-voltage connecting rods and the zero-phase connecting rods in a one-to-one correspondence manner, three groups of lower channel steels with opposite end faces are fixed at the bottom of the oil tank, the lower end of an iron core column immersed in the transformer oil is clamped and fixed between the end faces of the two lower channel steels, the upper end of the iron core column is clamped and fixed through two upper channel steels, and, the iron core post is long circle form and adopts wu steel silicon steel sheet G85 to make, every group a primary winding and a secondary winding have been cup jointed to the periphery of iron core post, a set of iron core post the one end of secondary winding corresponds the electricity with a low pressure connecting rod and is connected, three iron core posts of group the other end of secondary winding is connected the back and is connected with a zero looks connecting rod electricity, a set of iron core post the one end of primary winding corresponds the electricity with a high pressure connecting rod and is connected, three iron core posts of group the other end of primary winding is connected the back and is connected with the excitation-free tapping switch electricity, oil tank bottom fixedly connected with supports the base, oil tank lateral wall bottom is provided with the drain plug.

2. The energy-saving oil-filled transformer according to claim 1, wherein a drain plug is arranged at the bottom of the oil tank.

3. The energy-saving oil-filled transformer according to claim 1, wherein corrugated sheets are connected to the peripheral outer side wall of the oil tank.

4. The energy-saving oil-filled transformer according to claim 1, wherein a nameplate is fixedly arranged in front of the oil tank.