A superconducting transformer coolant nitrogen automatic compensation device

Abstract

The present invention discloses a superconducting transformer coolant liquid nitrogen automatic compensation device, which relates to the technical field of superconducting transformers and includes a cover body. A tank body is arranged below the cover body, and an iron core is installed inside the cover body. A coil is arranged outside the iron core. An upper bracket is fixed at the upper end of the cover body, a lower bracket is fixed below the tank body, and a base is installed below the lower bracket. As the liquid nitrogen in the tank body is consumed, the liquid level of the liquid nitrogen will gradually drop, and the floating plate will drop along with the drop of the liquid level of the liquid nitrogen. The first telescopic rod gradually extends downward until after the floating plate drops to a certain extent along with the liquid level, the connecting rod moves downward with the ball plug. Driven by the connecting rod, the second telescopic rod will rotate until the pressing head presses the control button. At this time, the liquid nitrogen pump will be started, and the liquid nitrogen will be sent into the tank body through the first conveying pipe via the hollow pipe, playing an automatic compensation role for the liquid nitrogen in the tank body, and compensating the liquid nitrogen more timely.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting transformers, and particularly to an automatic compensation device for liquid nitrogen coolant of a superconducting transformer. Background Art

[0002] A superconducting transformer is an important component device in a superconducting power system and an important aspect of the application of superconducting technology. Compared with a conventional transformer, a high-temperature superconducting transformer uses high-temperature superconducting materials to replace copper wires and liquid nitrogen to replace oil as a coolant, thus bringing many advantages, such as small volume, light weight, energy saving, environmental protection, etc.

[0003] Since the tank body in the superconducting transformer is non-transparent and closed, when the liquid nitrogen in the tank body is insufficient, there is a problem that it is difficult for the staff to visually and timely discover and supplement the liquid nitrogen. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose an automatic compensation device for liquid nitrogen coolant of a superconducting transformer.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An automatic compensation device for liquid nitrogen coolant of a superconducting transformer, including a cover body. A tank body is arranged below the cover body, and an iron core is installed inside the cover body. A coil is arranged outside the iron core. An upper bracket is fixed at the upper end of the cover body, a lower bracket is fixed below the tank body, and a base is installed below the lower bracket.

[0007] Preferably, a fixing rod is installed at the upper end of the cover body, and a hollow tube is installed inside the cover body. A connecting rod is arranged between the cover body and the hollow tube. A ball plug is fixed at the lower end of the connecting rod, and a connecting piece is fixed at the upper end of the connecting rod. A first telescopic rod is fixedly connected to the lower end of the ball plug, and a floating plate is fixed at the lower end of the first telescopic rod. A second telescopic rod is rotatably connected between the fixing rod and the connecting piece, a pressing head is fixed at one end of the second telescopic rod, and a control button is arranged at a position close to the pressing head at the upper end of the cover body.

[0008] Preferably, a first delivery pipe is fixedly connected to one side of the hollow tube. One end of the first delivery pipe is fixedly connected to a liquid nitrogen pump. One end of the liquid nitrogen pump is fixedly connected to a second delivery pipe. The three second delivery pipes are connected through a four-way pipe, and one end of the four-way pipe is connected to a third delivery pipe.

[0009] Preferably, the liquid nitrogen pump is fixedly connected to the base through a support seat.

[0010] Preferably, through holes are provided at positions corresponding to the connecting rod on the cover body and the upper end of the hollow tube, and the connecting rod is slidably connected to the through holes.

[0011] Preferably, a suspension ring is fixed to the upper end of the upper bracket.

[0012] Preferably, a sealing ring is fixed to the lower end of the cover body, and the outer diameter of the sealing ring is adapted to the inner diameter of the tank body.

[0013] Preferably, a notch is provided through the surface of the floating plate.

[0014] Preferably, a support rod is fixed below the cover body, a fixing piece is fixed to one end of the support rod, and the fixing piece is fixedly connected to the coil by a rivet.

[0015] Preferably, the control button is electrically connected to the liquid nitrogen pump.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. As the liquid nitrogen in the tank is consumed, the liquid level of the liquid nitrogen will gradually drop, and the floating plate will drop with the drop of the liquid level of the liquid nitrogen. The first telescopic rod gradually extends downward until after the floating plate drops to a certain extent with the liquid surface, the connecting rod moves downward with the ball plug. Driven by the connecting rod, the second telescopic rod will rotate until the pressing head presses the control button. At this time, the liquid nitrogen pump will be started, and the liquid nitrogen will be sent into the tank through the hollow tube through the first delivery pipe, playing an automatic compensation role for the liquid nitrogen in the tank, and the compensation for the liquid nitrogen is more timely;

[0018] 2. As the liquid level of the liquid nitrogen in the tank rises, the floating of the floating plate will cause the first telescopic rod to contract upward section by section. After the first telescopic rod can no longer contract, the first telescopic rod, the ball plug and the connecting rod will move upward synchronously until the ball plug moves upward into the hollow tube. The ball plug is inserted into the hollow tube, playing a sealing role for the hollow tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of an automatic liquid nitrogen compensation device for a superconducting transformer coolant proposed by the present invention;

[0020] Figure 2 is a schematic cross-sectional structure diagram of an automatic liquid nitrogen compensation device for a superconducting transformer coolant proposed by the present invention with the tank body removed and the cover body;

[0021] Figure 3 is a schematic diagram of the structure of an automatic liquid nitrogen compensation device for a superconducting transformer coolant proposed by the present invention in the state of low liquid level of liquid nitrogen in the tank;

[0022] Figure 4Schematic diagram of the structure of the liquid nitrogen automatic compensation device for a superconducting transformer proposed by the present invention under the state of high liquid nitrogen level in the tank;

[0023] Figure 5 Schematic cross-sectional structure diagram of the cover body and the tank body of the liquid nitrogen automatic compensation device for a superconducting transformer proposed by the present invention;

[0024] Figure 6 A liquid nitrogen automatic compensation device for a superconducting transformer proposed by the present invention Figure 5 Enlarged structure diagram at position A in it.

[0025] In the figure: 1. Cover body; 2. Tank body; 3. Iron core; 4. Coil; 5. Sealing ring; 6. Hollow tube; 7. Connecting rod; 8. Ball plug; 9. First telescopic rod; 10. Floating plate; 11. Fixed rod; 12. Connecting piece; 13. Second telescopic rod; 14. Pressing head; 15. Control button; 16. First delivery pipe; 17. Liquid nitrogen pump; 18. Second delivery pipe; 19. Four-way pipe; 20. Third delivery pipe; 21. Upper support; 22. Suspension ring; 23. Lower support; 24. Base; 25. Support rod; 26. Fixed piece. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Referring to Figures 1-6 , a liquid nitrogen automatic compensation device for a superconducting transformer includes a cover body 1. A tank body 2 is arranged below the cover body 1, and an iron core 3 is installed inside the cover body 1. A coil 4 is arranged outside the iron core 3. A support rod 25 is fixed below the cover body 1. One end of the support rod 25 is fixed with a fixed piece 26. The fixed piece 26 is fixedly connected to the coil 4 by rivets. An upper support 21 is fixed at the upper end of the cover body 1. A suspension ring 22 is fixed at the upper end of the upper support 21. The suspension ring 22 is used for moving and hoisting the superconducting transformer. A lower support 23 is fixed below the tank body 2. A base 24 is installed below the lower support 23.

[0028] A fixing rod 11 is installed at the upper end of the cover body 1, and a hollow tube 6 is installed inside the cover body 1. A connecting rod 7 is arranged between the cover body 1 and the hollow tube 6. Through holes are opened at the positions corresponding to the connecting rod 7 at the upper ends of the cover body 1 and the hollow tube 6. The connecting rod 7 is slidably connected to the through holes. A ball plug 8 is fixed at the lower end of the connecting rod 7, and a connecting piece 12 is fixed at the upper end of the connecting rod 7. A first telescopic rod 9 is fixedly connected to the lower end of the ball plug 8, and a floating plate 10 is fixed at the lower end of the first telescopic rod 9. A second telescopic rod 13 is rotatably connected between the fixing rod 11 and the connecting piece 12. A pressing head 14 is fixed at one end of the second telescopic rod 13. A control button 15 is arranged at the upper end of the cover body 1 near the pressing head 14. A first delivery pipe 16 is fixedly connected to one side of the hollow tube 6. A liquid nitrogen pump 17 is fixedly connected to one end of the first delivery pipe 16. The control button 15 is electrically connected to the liquid nitrogen pump 17. A second delivery pipe 18 is fixedly connected to one end of the liquid nitrogen pump 17. The three second delivery pipes 18 are connected through a four-way pipe 19. One end of the four-way pipe 19 is connected to a third delivery pipe 20. The floating plate 10 will descend as the liquid nitrogen level drops. The first telescopic rod 9 will slowly extend downward section by section until the floating plate 10 drops to a certain extent along with the liquid surface. Then the ball plug 8 disengages from the hollow tube 6, and the connecting rod 7 moves downward along with the ball plug 8. Driven by the connecting rod 7, the second telescopic rod 13 will rotate until the pressing head 14 presses the control button 15. At this time, the liquid nitrogen pump 17 will be started, and liquid nitrogen will be sent into the tank body 2 through the hollow tube 6 via the first delivery pipe 16, playing an automatic compensation role for the liquid nitrogen in the tank body 2.

[0029] The liquid nitrogen pump 17 is fixedly connected to the base 24 through a support seat, and the support seat plays a role in fixedly supporting the liquid nitrogen pump 17.

[0030] A sealing ring 5 is fixed at the lower end of the cover body 1. The outer diameter of the sealing ring 5 is adapted to the inner diameter of the tank body 2, and the sealing ring 5 is used to improve the tightness between the cover body 1 and the tank body 2.

[0031] Notches are formed through the surface of the floating plate 10. The formation of the notches can reduce the impact force generated on the surface of the floating plate 10 when liquid nitrogen flows into the tank body 2. The floating plate 10 is in an arc structure, which can not only ensure that the floating plate 10 has a certain area but also prevent the floating plate 10 from contacting the surface of the coil 4 and the inner wall of the tank body 2.

[0032] In the present invention, one end of the third delivery pipe 20 is connected to a pipe for transporting liquid nitrogen. When the liquid nitrogen in the tank body 2 is sufficient, such as Figure 4As shown, the ball plug 8 abuts against the hollow tube 6. When the control button 15 is not pressed, the liquid nitrogen pump 17 will not start to deliver liquid nitrogen into the tank body 2. As the liquid nitrogen in the tank body 2 continues to be consumed, the liquid level of the liquid nitrogen will gradually drop. Then, the floating plate 10 will drop with the drop of the liquid nitrogen level. Since the ball plug 8 abuts against the hollow tube 6, the first telescopic rod 9 will slowly extend downward section by section until the floating plate 10 drops to a certain extent with the liquid level. After that, the ball plug 8 disengages from the hollow tube 6, and the connecting rod 7 moves downward with the ball plug 8. Driven by the connecting rod 7, the second telescopic rod 13 will rotate until the pressing head 14 presses the control button 15. At this time, the floating plate 10, the first telescopic rod 9, the ball plug 8 and the connecting rod 7 will no longer move downward. And at this time, the liquid nitrogen pump 17 will start to send liquid nitrogen into the tank body 2 through the first delivery pipe 16 via the hollow tube 6, playing an automatic compensation role for the liquid nitrogen in the tank body 2;

[0033] As the liquid level of the liquid nitrogen in the tank body 2 rises, the upward floating of the floating plate 10 will cause the first telescopic rod 9 to contract upward section by section. After the first telescopic rod 9 can no longer contract, the first telescopic rod 9, the ball plug 8 and the connecting rod 7 will move upward synchronously. During this process, the second telescopic rod 13 will also gradually return to its original position. Since the liquid nitrogen liquid level height is equal each time the pressing head 14 presses the control button 15, then when the liquid nitrogen delivery speed remains unchanged, as long as the operation time of the liquid nitrogen pump 17 is set to remain unchanged, the liquid nitrogen can be continuously input into the tank body 2 until the ball plug 8 abuts against the hollow tube 6 upward. When the ball plug 8 is inserted into the hollow tube 6, it plays a sealing role for the hollow tube 6.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A superconducting transformer coolant liquid nitrogen automatic compensation device, including a cover body (1), Characterized in that, A tank body (2) is arranged below the cover body (1), and an iron core (3) is installed inside the cover body (1). A coil (4) is arranged outside the iron core (3). An upper support (21) is fixed at the upper end of the cover body (1). A lower support (23) is fixed below the tank body (2). A base (24) is installed below the lower support (23); A fixed rod (11) is installed at the upper end of the cover body (1), and a hollow tube (6) is installed inside the cover body (1). A connecting rod (7) is arranged between the cover body (1) and the hollow tube (6). A ball plug (8) is fixed at the lower end of the connecting rod (7), and a connecting piece (12) is fixed at the upper end of the connecting rod (7). A first telescopic rod (9) is fixedly connected to the lower end of the ball plug (8). A floating plate (10) is fixed at the lower end of the first telescopic rod (9). A second telescopic rod (13) is rotatably connected between the fixed rod (11) and the connecting piece (12). A pressing head (14) is fixed at one end of the second telescopic rod (13). A control button (15) is arranged at the upper end of the cover body (1) near the pressing head (14); One side of the hollow tube (6) is fixedly connected to a first delivery pipe (16). One end of the first delivery pipe (16) is fixedly connected to a liquid nitrogen pump (17). One end of the liquid nitrogen pump (17) is fixedly connected to a second delivery pipe (18). The three second delivery pipes (18) are connected through a four-way pipe (19). One end of the four-way pipe (19) is connected to a third delivery pipe (20).

2. The superconducting transformer coolant liquid nitrogen automatic compensation device according to claim 1, Characterized in that, The liquid nitrogen pump (17) is fixedly connected to the base (24) through a support seat.

3. The superconducting transformer coolant liquid nitrogen automatic compensation device according to claim 1, Characterized in that, Through holes are respectively opened at the upper ends of the cover body (1) and the hollow tube (6) corresponding to the position of the connecting rod (7), and the connecting rod (7) is slidably connected to the through holes.

4. The superconducting transformer coolant liquid nitrogen automatic compensation device according to claim 1, Characterized in that, A lifting ring (22) is fixed at the upper end of the upper support (21).

5. The superconducting transformer coolant liquid nitrogen automatic compensation device according to claim 1, Characterized in that, A sealing ring (5) is fixed at the lower end of the cover body (1), and the outer diameter of the sealing ring (5) is adapted to the inner diameter of the tank body (2).

6. The superconducting transformer coolant liquid nitrogen automatic compensation device according to claim 1, Characterized in that, Notches are formed through the surface of the floating plate (10).

7. The superconducting transformer coolant liquid nitrogen automatic compensation device according to claim 1, Characterized in that, A support rod (25) is fixed below the cover body (1). A fixing piece (26) is fixed at one end of the support rod (25), and the fixing piece (26) is fixedly connected to the coil (4) through a rivet.

8. An automatic compensation device for liquid nitrogen, a coolant of a superconducting transformer, according to claim 1, characterized in that, the control button (15) is electrically connected to the liquid nitrogen pump (17).

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