Transformer oil circulation structure and transformer

Abstract

The utility model discloses a transformer oil circulation structure and a transformer, and relates to the technical field of transformers. Comprising a transformer shell, a plurality of vertical pipes fixedly communicate with the top of the transformer shell, an oil inlet is formed in the bottom of the transformer shell, a circulator is arranged at the tops of the vertical pipes and comprises a crankshaft, and two sets of bent rods with opposite bending directions are formed on a shaft body of the crankshaft; a rod body of the bent rod is connected with an oil pumping mechanism; the side face of the transformer shell is connected with a refrigerator, the top and the bottom of the refrigerator are connected with an oil outlet assembly and an oil inlet pipe respectively, and the oil inlet pipe is fixedly communicated with the oil inlet. According to the utility model, the circulator, the oil pumping mechanism and the opening and closing parts are arranged, the motor is started, the motor drives the crankshaft to rotate, and the crankshaft rotates to drive the opening and closing parts in the vertical pipes at different positions to act, so that insulating oil at different positions can flow into the refrigerator through the connecting pipe for refrigeration; and part of insulating oil with slow flow speed can be quickly cooled, so that the heat dissipation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely is a transformer oil circulation structure and transformer. BACKGROUND

[0002] The oil-immersed transformer is usually composed of a core, a high-voltage winding, a low-voltage winding, insulating oil and a shell, wherein the insulating oil plays a role of insulation, cooling and protection of the core and the winding, and also undertakes the task of heat transfer.

[0003] The utility model discloses a kind of power transformers for accelerating transformer oil circulation, by the cooperation of circulating assembly in circulating assembly and water bath box, in the meanwhile absorbing the heat carried by transformer oil when accelerating transformer oil circulation, to solve the existing power transformers for accelerating transformer oil circulation usually only accelerate the circulating speed of transformer oil, but without eliminating the heat carried by transformer oil, to cause the situation of poor heat dissipation effect.

[0004] The above scheme solves the technical problems raised in the background art, but in actual application, the above scheme still has certain defects, for example, the core winding in the transformer tank occupies a large space, and due to the existence of viscous effect between the insulating oil and the core winding, the flow rate of the insulating oil near the core winding is slow, while the flow rate of the insulating oil far from the core winding is fast, so that the insulating oil with slow flow rate cannot be quickly cooled, reducing the cooling effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a transformer oil circulation structure and a transformer to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a transformer oil circulation structure, comprising a transformer shell, a plurality of vertical pipes are fixedly connected to the top of the transformer shell, an oil inlet is formed in the bottom of the transformer shell, a circulator is arranged at the top of the vertical pipe, the circulator comprises a crankshaft, two groups of bent rods with opposite bending directions are formed on the shaft body of the crankshaft;

[0007] A pump oil mechanism is connected to the rod body of the bent rod;

[0008] A refrigerator is connected to the side surface of the transformer shell, an oil outlet assembly and an oil inlet pipe are connected to the top and bottom of the refrigerator respectively, and the oil inlet pipe is fixedly connected to the oil inlet.

[0009] Preferably, the circulator further comprises a housing, the crankshaft is movably connected to the housing, a motor is fixedly arranged on the side surface of the housing, and the output end of the motor is fixedly connected to the end of the crankshaft.

[0010] The partition plate is fixed in the shell and divides the inner cavity of the shell into a first oil inlet cavity and a second oil inlet cavity.

[0011] Preferably, the oil outlet assembly comprises a first connecting pipe and a second connecting pipe fixedly communicated with the first oil inlet cavity and the second oil inlet cavity respectively, and the end portions of the first connecting pipe and the second connecting pipe are fixedly communicated with an oil outlet pipe;

[0012] The pipe bodies of the first connecting pipe and the second connecting pipe are connected with one-way valves.

[0013] Preferably, the oil pumping mechanism comprises a vertical rod, and the top of the vertical rod is movably connected with the curved rod.

[0014] The bottom of the vertical rod is movably connected with a piston block through a movable part, and the piston block is matched with the inner hole of the vertical pipe.

[0015] The piston block is provided with a plurality of opening and closing elements.

[0016] Preferably, the opening and closing element comprises a through hole, the bottom of the through hole is fixedly connected with a hollow plate, and the top of the through hole is movably connected with a movable head.

[0017] A spring is fixed between the hollow plate and the movable head.

[0018] A plurality of oil holes are formed in the top of the movable head.

[0019] A transformer uses the oil circulation structure.

[0020] Compared with the prior art, the oil circulation structure has the advantages that:

[0021] The transformer oil circulation structure and the transformer are provided with a circulator, an oil pumping mechanism and an opening and closing element, the starting motor drives the crankshaft to rotate, the crankshaft rotation drives the opening and closing element in the vertical pipe at different positions to act, so that the insulating oil at different positions can flow into the refrigerator through the connecting pipe for refrigeration, the insulating oil with a slow flow rate can be quickly cooled, and the cooling effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a half sectional view of the utility model;

[0024] Figure 3 It is a half sectional view of the oil pumping mechanism of the utility model.

[0025] In the diagram: 1. Transformer housing; 101. Vertical pipe; 2. Circulator; 201. Outer casing; 202. Crankshaft; 203. Motor; 204. Partition plate; 3. Oil outlet pipe; 4. Refrigerator; 5. Oil inlet pipe; 6. Oil pumping mechanism; 601. Piston block; 602. Vertical rod; 603. Moving part; 604. Hollow plate; 605. Moving head; 606. Oil hole; 607. Spring; 7. Check valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-3 As shown, this utility model provides a technical solution: a transformer oil circulation structure, including a transformer housing 1, with several vertical pipes 101 fixedly connected to the top of the transformer housing 1, and an oil inlet at the bottom of the transformer housing 1. It can be understood that the pipe opening of the vertical pipe 101 is equivalent to the oil outlet. A circulator 2 is provided at the top of the vertical pipe 101, wherein the circulator 2 includes a crankshaft 202, and two sets of bent rods with opposite bending directions are formed on the shaft of the crankshaft 202. In a specific embodiment of this solution, the number of vertical pipes 101 is set to four, and the number of bent rods is adapted to the number of vertical pipes 101, so that the number of bent rods in each set is set to two, and each bent rod rotates around the central axis of the crankshaft 202 with an equal radius.

[0028] like Figure 3 As shown, an oil pumping mechanism 6 is connected to the rod body of the bent rod. The insulating oil in the transformer housing 1 is pumped into the circulator 2 through the oil pumping mechanism 6. A cooler 4 for cooling the insulating oil is connected to the side of the transformer housing 1. The top and bottom of the cooler 4 are respectively connected to an oil outlet assembly and an oil inlet pipe 5. The oil inlet pipe 5 is fixedly connected to the oil inlet. The cooler 4 is a mature existing technology, and its specific model and working principle will not be described in detail in this solution.

[0029] like Figure 2 As shown, the circulator 2 also includes a housing 201, which connects the inner cavity of the transformer housing 1 to the inner cavity of the housing 201 through a vertical pipe 101. The crankshaft 202 is movably connected to the housing 201. A motor 203 is fixed on the side of the housing 201, and the output end of the motor 203 is fixed to the end of the crankshaft 202. When the motor 203 rotates, it can drive the crankshaft 202 to rotate.

[0030] A partition plate 204 is fixed in the shell 201, and the partition plate 204 divides the cavity in the shell 201 into a first oil inlet cavity and a second oil inlet cavity.

[0031] As shown in Figure 3 The oil pumping mechanism 6 comprises a vertical rod 602, the top of the vertical rod 602 is movably connected with a bent rod, and a piston block 601 is movably connected with the bottom of the vertical rod 602 through a movable part 603, the movable part 603 can be a hinged seat, of course, it can also be other components capable of realizing rotation of the vertical rod 602 relative to the top of the piston block 601, it can be understood that the piston block 601 is matched with the inner hole of the vertical pipe 101, and a plurality of opening and closing members in a circumferential array are arranged on the piston block 601.

[0032] The opening and closing member comprises a through hole, a hollow plate 604 is fixed at the bottom of the through hole, a movable head 605 is movably connected with the top of the through hole, a plurality of oil holes 606 are formed in the top of the movable head 605, the oil holes 606 are connected with the inner cavity of the transformer shell 1, and a spring 607 is fixed between the hollow plate 604 and the movable head 605, when the oil pressure between the shell 201 and the inner cavity of the transformer shell 1 is in a balanced state, the movable head 605 is accommodated in the through hole under the elastic force of the spring 607.

[0033] For the supplement of the present scheme, the starting motor 203 drives the crankshaft 202 to rotate, as shown in Figure 2 As the one-way valve 7 on the first connecting pipe 2 reversely stops the flow of the insulating oil in the first oil inlet cavity, when the vertical rod 602 in the left first oil inlet cavity moves downward, the oil pressure in the transformer shell 1 is applied to the bottom end surface of the movable head 605, the top of the movable head 605 is pushed out of the through hole, the insulating oil in the transformer shell 1 enters the first oil inlet cavity through the oil holes 606, the vertical rod 602 in the right second oil inlet cavity moves upward, the oil pressure in the second oil inlet cavity is applied to the top end surface of the movable head 605, at this time, the movable head 605 is accommodated in the through hole, and at the same time, the insulating oil flows out of the second connecting pipe 2 to the refrigerator 4, so as to realize pumping of the insulating oil at different positions to the refrigerator 4 for refrigeration.

[0034] The application also discloses a transformer using the oil circulation structure.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be changed, modified, replaced and varied in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended embodiments and their equivalents.

Claims

1. A transformer oil circulation structure comprising a transformer housing (1), characterized by: The vertical pipe (101) is fixedly connected with the top of the transformer shell (1), the bottom of the transformer shell (1) is provided with an oil inlet, the top of the vertical pipe (101) is provided with a circulating device (2), the circulating device (2) comprises a crankshaft (202), two groups of bent rods with opposite bending directions are formed on the shaft body of the crankshaft (202); The rod body of the bent rod is connected with a pump oil mechanism (6); The transformer shell (1) is connected with a refrigerator (4), the top and the bottom of the refrigerator (4) are respectively connected with an oil outlet assembly and an oil inlet pipe (5), and the oil inlet pipe (5) is fixedly connected with the oil inlet.

2. A transformer oil circulation structure according to claim 1, characterized by: The circulating device (2) further comprises a shell (201), the crankshaft (202) is movably connected with the shell (201), the side surface of the shell (201) is fixedly connected with a motor (203), and the output end of the motor (203) is fixedly connected with the end portion of the crankshaft (202); The shell (201) is fixedly connected with a partition plate (204), and the partition plate (204) divides the inner cavity of the shell (201) into a first oil inlet cavity and a second oil inlet cavity.

3. A transformer oil circulation structure according to claim 2, characterized by: The oil outlet assembly comprises a first connecting pipe and a second connecting pipe fixedly connected with the first oil inlet cavity and the second oil inlet cavity respectively, and the end portions of the first connecting pipe and the second connecting pipe are fixedly connected with an oil outlet pipe (3); The pipe body of the first connecting pipe and the second connecting pipe is connected with a one-way valve (7).

4. A transformer oil circulation structure according to claim 1, characterized by: The pump oil mechanism (6) comprises a vertical rod (602), and the top of the vertical rod (602) is movably connected with the bent rod; The bottom of the vertical rod (602) is movably connected with a piston block (601) through a movable part (603), and the piston block (601) is matched with the inner hole of the vertical pipe (101); A plurality of opening and closing elements are arranged on the piston block (601).

5. A transformer oil circulation structure according to claim 4, characterized by: The opening and closing element comprises a through hole, the bottom of the through hole is fixedly connected with a hollow plate (604), and the top of the through hole is movably connected with a movable head (605); The spring (607) is fixed between the hollow plate (604) and the movable head (605); A plurality of oil holes (606) are formed in the top of the movable head (605).

6. A transformer characterized by: The oil circulating structure of any one of claims 1-5 is used.

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