Degassing device for dissolved gas in transformer oil

Abstract

The utility model discloses a degassing device for dissolved gas in transformer oil, which comprises a box body and a cover body, the box body is provided with a vacuum pump, an exhaust pipe and a liquid discharge pipe, the bottom wall of the cover body is rotatably provided with a reciprocating lead screw, the upper end face of the cover body is provided with a power mechanism connected with the reciprocating lead screw, the end part of the reciprocating lead screw is rotatably provided with a support seat, and the support seat is provided with a gas outlet. A supporting groove is formed in the inner bottom wall of the box body, a reciprocating lead screw is sleeved with a lead screw sleeve in a threaded mode, a rotating rod is rotationally arranged on the lead screw sleeve through a torsion spring, a lifting box is fixedly arranged at the end of the rotating rod, and the rotating rod is connected with a supporting base through a transmission mechanism and connected with the supporting base through a limiting mechanism. According to the transformer oil degassing device, the driving motor, the reciprocating lead screw, the lead screw sleeve, the rotating rod, the lifting box, the gear and the toothed bar are arranged and are matched for use, so that the lifting box can move up and down and turn over, gas at the lower part of transformer oil is easy to separate, and the degassing uniformity and efficiency are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer oil degassing equipment, in particular to a degassing device for gas dissolved in transformer oil. Background Art

[0002] Power transformers are one of the main equipment in the power system. Ensuring the safe and reliable operation of transformers is of great significance to improving the power supply reliability of the power system. Real-time monitoring of the gas content dissolved in transformer oil can timely detect latent faults and sudden serious faults of power transformers, which is the main method to ensure the safe operation of the power system.

[0003] Existing transformer oil degassing devices usually use a vacuum degassing method to degas, by introducing the transformer oil into a vacuum degassing chamber, and by forming a negative pressure, the dissolved gas in the transformer oil is released. However, this method does not degas uniformly, and the gas at the bottom of the transformer oil is not easy to be released, and the degassing efficiency is low. In order to address this technical problem, a degassing device for dissolved gas in transformer oil is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a degassing device for gas dissolved in transformer oil.

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

[0006] A degassing device for dissolved gas in transformer oil comprises a box body and a cover body, a vacuum pump, an exhaust pipe and a drain pipe are installed on the box body, a reciprocating screw is rotatably provided on the bottom wall of the cover body, a power mechanism connected to the reciprocating screw is provided on the upper end surface of the cover body, a support seat is rotatably provided at the end of the reciprocating screw, a support groove is provided on the bottom wall of the box body, a screw sleeve is provided on the threaded sleeve of the reciprocating screw, a rotating rod is rotatably provided on the screw sleeve through a torsion spring, a lifting box is fixedly provided on the end of the rotating rod, the rotating rod is connected to the support seat through a transmission mechanism, and the rotating rod is connected to the support seat through a limiting mechanism.

[0007] Preferably, the power mechanism comprises a driving motor disposed on the cover body, and the output shaft of the driving motor rotates through the cover body and is fixedly connected to the end of the reciprocating screw.

[0008] Preferably, the transmission mechanism comprises a rack arranged on the upper end surface of the support seat, and the rotating rod is provided with a gear, and the gear cooperates with the rack.

[0009] Preferably, the limiting mechanism comprises a limiting frame installed on a supporting seat, the limiting frame is U-shaped, and the rotating rod is a rectangular column.

[0010] Preferably, a vertical rod is provided between the cover body and the support seat, the vertical rod is parallel to the reciprocating screw, and the vertical rod slides through the screw sleeve.

[0011] Preferably, the exhaust pipe is installed on the box body at a position close to the cover body, and the drain pipe is installed on the box body at a position away from the cover body, and valves are provided on both the exhaust pipe and the drain pipe.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting a driving motor, a reciprocating screw, a screw sleeve, a rotating rod, a lifting box, a gear and a gear rod, the above components can be used together to realize the up and down movement and flipping operation of the lifting box, so that the gas under the transformer oil can be easily released, ensuring the uniformity and efficiency of degassing.

[0014] 2. By setting a limit frame and setting the rotating rod into a rectangular body, the rotating rod is in the lower position after being lowered, so as to avoid it being overturned due to the influence of transformer oil, so that the oil cannot be scooped out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a degassing device for dissolved gas in transformer oil proposed by the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the vertical section structure;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure at point A.

[0018] In the figure: 1 box body, 2 cover body, 3 drive motor, 4 vacuum pump, 5 exhaust pipe, 6 drain pipe, 7 support seat, 8 support groove, 9 reciprocating screw, 10 lifting box, 11 screw sleeve, 12 rotating rod, 13 limit frame, 14 rack, 15 gear. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-3 A degassing device for dissolved gas in transformer oil comprises a box body 1 and a cover body 2. A vacuum pump 4, an exhaust pipe 5 and a drain pipe 6 are installed on the box body 1. The exhaust pipe 5 is installed on the box body 1 at a position close to the cover body 2, and the drain pipe 6 is installed on the box body 1 at a position far away from the cover body 2. Valves are provided on the exhaust pipe 5 and the drain pipe 6. The box body 1 and the cover body 2 are threaded and sealed. The exhaust pipe 5 discharges gas, and the drain pipe 6 discharges liquid (transformer oil).

[0021] A reciprocating screw 9 is rotatably provided on the bottom wall of the cover body 2, a power mechanism connected to the reciprocating screw 9 is provided on the upper end surface of the cover body 2, a support seat 7 is rotatably provided on the end of the reciprocating screw 9, a support groove 8 is provided on the inner bottom wall of the box body 1, a screw sleeve 11 is threadedly sleeved on the reciprocating screw 9, a rotating rod 12 is rotatably provided on the screw sleeve 11 through a torsion spring, a lifting box 10 is fixedly provided on the end of the rotating rod 12, the rotating rod 12 is connected to the support seat 7 through a transmission mechanism, and the rotating rod 12 is connected to the support seat 7 through a limiting mechanism.

[0022] The power mechanism includes a drive motor 3 arranged on the cover body 2. The output shaft of the drive motor 3 rotates through the cover body 2 and is fixedly connected to the end of the reciprocating screw 9. The drive motor 3 is the power device of the reciprocating screw 9 in this scheme. After starting, it can drive the reciprocating screw 9 to rotate. Its exposed setting is convenient for inspection and maintenance, and its exposed setting is convenient for heat dissipation.

[0023] The transmission mechanism includes a rack 14 arranged on the upper end surface of the support seat 7, and a gear 15 is provided on the rotating rod 12. The gear 15 cooperates with the rack 14. Only the upper half of the rack 14 has teeth. Only when the rotating rod 12 drives the gear 15 to rise to a certain height will it engage with the rack 14.

[0024] The limiting mechanism includes a limiting frame 13 installed on the support seat 7, the limiting frame 13 is U-shaped, and the rotating rod 12 is a rectangular column. When the rotating rod 12 is in the limiting frame 13, it is restricted by the limiting frame 13 and cannot rotate, ensuring that the box opening of the lifting box 10 is always facing upward.

[0025] A vertical rod is provided between the cover body 2 and the support seat 7. The vertical rod is parallel to the reciprocating screw 9 and slides through the screw sleeve 11. The screw sleeve 11 is limited by the vertical rod to prevent it from rotating with the reciprocating screw 9.

[0026] When the utility model is used, transformer oil is put into the box body 1, and then the upper cover body 2 is installed so that the reciprocating screw 9 and other components are in the box body 1. At this time, the support seat 7 is in the support groove 8, and then the vacuum pump 4 is started to make the box body 1 in a negative pressure state, so that the dissolved gas in the transformer oil is released and finally discharged through the exhaust pipe 5. In this process, the drive motor 3 is started, and the drive motor 3 drives the reciprocating screw 9 to rotate. When the reciprocating screw 9 rotates, the screw sleeve 11 is limited and moves back and forth up and down in the box body 1. The up and down movement of the screw sleeve 11 will also drive the lifting box 10 to move synchronously with the help of the rotating rod 12. The lifting box 10 descends to the bottom, and hydraulic oil enters its interior (part of the hydraulic oil is the oil body at the bottom of the box body 1), and then the lifting box 10 rises. After the gear 15 on the rotating rod 12 is meshed with the rack 14, in the subsequent rising process of the rotating rod 12, the rotating rod 12 will drive the lifting box 10 to rotate, and finally the lifting box 10 flips over to pour out the oil body, and finally the lifting box 10 descends and flips back to continue the above steps.

[0027] Repeating the above steps can realize the turning-up operation of the bottom oil body, making it easy for the gas under the transformer oil to escape, thus ensuring the uniformity and efficiency of degassing.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A degassing device for dissolved gas in transformer oil, comprising a box body (1) and a cover body (2), characterized in that: The box body (1) is provided with a vacuum pump (4), an exhaust pipe (5) and a liquid discharge pipe (6); a reciprocating screw (9) is rotatably provided on the bottom wall of the cover body (2); a power mechanism connected to the reciprocating screw (9) is provided on the upper end surface of the cover body (2); a support seat (7) is rotatably provided at the end of the reciprocating screw (9); a support groove (8) is provided on the inner bottom wall of the box body (1); a screw sleeve (11) is threadedly provided on the reciprocating screw (9); a rotating rod (12) is rotatably provided on the screw sleeve (11) via a torsion spring; a lifting box (10) is fixedly provided at the end of the rotating rod (12); the rotating rod (12) is connected to the support seat (7) via a transmission mechanism; and the rotating rod (12) is connected to the support seat (7) via a limiting mechanism.

2. A degassing device for dissolved gas in transformer oil according to claim 1, characterized in that: The power mechanism comprises a drive motor (3) arranged on the cover body (2); the output shaft of the drive motor (3) rotates through the cover body (2) and is fixedly connected to the end of the reciprocating screw (9).

3. A degassing device for dissolved gas in transformer oil according to claim 2, characterized in that: The transmission mechanism comprises a rack (14) arranged on the upper end surface of the support seat (7), and a gear (15) is arranged on the rotating rod (12), and the gear (15) cooperates with the rack (14).

4. A degassing device for dissolved gas in transformer oil according to claim 3, characterized in that: The limiting mechanism comprises a limiting frame (13) mounted on a supporting seat (7); the limiting frame (13) is U-shaped; and the rotating rod (12) is a rectangular column.

5. A degassing device for dissolved gas in transformer oil according to claim 4, characterized in that: A vertical rod is provided between the cover body (2) and the support seat (7), the vertical rod is parallel to the reciprocating screw (9), and the vertical rod slides through the screw sleeve (11).

6. A degassing device for dissolved gas in transformer oil according to claim 5, characterized in that: The exhaust pipe (5) is installed at a position on the box body (1) close to the cover body (2), and the drain pipe (6) is installed at a position on the box body (1) away from the cover body (2). Valves are provided on both the exhaust pipe (5) and the drain pipe (6).

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