Degassing device for transformer oil

Abstract

The utility model relates to the technical field of power equipment, in particular to a transformer oil degassing device which comprises a degassing chamber capable of forming a vacuum closed environment, an oil inlet and an oil outlet are formed in the lower portion of the degassing chamber, and a degassing chamber upper cover is arranged on the upper portion of the degassing chamber. The degassing chamber upper cover is provided with a gas outlet which is communicated with the inside and the outside of the degassing chamber, a stirring structure is arranged at the bottom in the degassing chamber and comprises a stirring part and a flow stabilizing part, the flow stabilizing part is arranged at the upper part of the oil inlet, the stirring part is rotatably arranged at the upper part of the flow stabilizing part, and the stirring part is arranged at the lower part of the degassing chamber. A bubbling pipe and a liquid level sensor are arranged in the degassing chamber, and the bubbling pipe extends downwards to the bottom of the degassing chamber. The technical problems that in the prior art, equipment is complex in structure, and gas residues cannot be completely separated out are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to a degassing device for transformer oil. Background Art

[0002] During the operation of the transformer, the gas in the transformer oil needs to be monitored online, so the gas in the transformer oil needs to be degassed. The existing degassing devices include osmotic membrane method, stirring method, ultrasonic method, headspace method and vacuum method, among which the vacuum degassing device is the most commonly used device.

[0003] However, the oil cylinder of the existing vacuum degassing device is placed horizontally, the oil cylinder piston is connected to the oil cylinder drive motor placed at the rear end, and the front end of the oil cylinder is connected to the three-way pipeline. Its structure is complex, occupies a large space, and is not easy to maintain. In addition, the existing device also has the problem of the escaped gas returning with the oil. The existing device has very high requirements for the horizontal placement of the oil cylinder. If the oil cylinder is tilted due to foundation, installation and other reasons, there will be a gas dead angle, causing the gas escaped from the transformer oil to remain in the oil cylinder, and the residual gas will return with the oil. Considering the various conditions of the on-site installation of the equipment, it is difficult to maintain absolute levelness, so there will always be gas remaining in the oil cylinder. Utility Model Content

[0004] The present application provides a degassing device for transformer oil, so as to at least solve the technical problems in the prior art that the equipment structure is complex and the gas residue cannot be completely precipitated.

[0005] In order to achieve the above-mentioned objectives, the present application provides a degassing device for transformer oil, comprising a degassing chamber that can form a vacuum-sealed environment, wherein an oil inlet and an oil outlet are respectively arranged at the lower portion of the degassing chamber, a degassing chamber upper cover is arranged at the upper portion of the degassing chamber, and the degassing chamber upper cover is provided with an outlet connecting the inside and outside of the degassing chamber, a stirring structure is arranged at the bottom of the degassing chamber, the stirring structure comprises a stirring member and a flow stabilizer, the flow stabilizer is arranged at the upper portion of the oil inlet, and the stirring member is rotatably arranged at the upper portion of the flow stabilizer, a bubbling tube and a liquid level sensor are arranged in the degassing chamber, and the bubbling tube extends downward to the bottom of the degassing chamber.

[0006] In some embodiments, the flow stabilizer is a plate-like structure covering the upper portion of the oil inlet, and through holes are distributed on the flow stabilizer, and the transformer oil can only flow from the through holes into the degassing chamber.

[0007] In some embodiments, the stirring member is a rotor disposed on the upper part of the flow stabilizing member, and a stirring motor for driving the stirring member to rotate is disposed on the lower part of the flow stabilizing member.

[0008] In some embodiments, the stirring element is a magnetic rotor.

[0009] In some embodiments, a protrusion is formed on the inner wall of the degassing chamber.

[0010] In some embodiments, the protrusions are formed on both sides of the inner wall of the degassing chamber.

[0011] In some embodiments, the protrusion has a conical structure.

[0012] In some embodiments, the liquid level sensor is disposed in a middle area of ​​the degassing chamber and extends downward.

[0013] In some embodiments, the oil inlet is arranged on one side of the lower portion of the degassing chamber, and the oil outlet is arranged on the other side opposite to the oil inlet.

[0014] In some embodiments, the degassing chamber is provided with a temperature-controlled shell outside.

[0015] According to the above content, the beneficial effects of this application are:

[0016] 1. No longer use the traditional linear actuator motor for transformer oil degassing, which simplifies the structure, reduces the space occupied and facilitates maintenance;

[0017] 2. Effectively solve the problem that the escaped gas remains in the oil cylinder and cannot be precipitated and returns with the oil;

[0018] 3. The flow stabilizer installed at the bottom of the degassing chamber can prevent the oil inlet from splashing when the oil is flowing in, which may cause the liquid level sensor to misjudge, and it also has the function of eliminating bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the present application;

[0022] Figure 3 is a side cross-sectional view of an embodiment of the present application;

[0023] Figure 4 It is a top view cross-sectional view of an embodiment of the present application.

[0024] Explanation of reference numerals: degassing chamber 1; oil inlet 1.1; oil outlet 1.2; raised portion 1.3; degassing chamber upper cover 2; stirring member 3; flow stabilizing member 4; through hole 4.1; stirring motor 5; bubbling tube 6; liquid level sensor 7; temperature control housing 8. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the contents disclosed in the present application, some changes such as design, manufacturing or production based on the technical contents disclosed in the present application are only conventional technical means, and should not be understood as insufficient contents disclosed in the present application.

[0026] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0027] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to greater than or equal to two. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The terms "first", "second", "third" and the like involved in the present application are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0028] Implementation example Figures 1 to 4 As shown, a degassing device for transformer oil includes a degassing chamber 1 that can form a vacuum-tight environment, an oil inlet 1.1 is provided on one side of the lower part of the degassing chamber 1, and an oil outlet 1.2 is provided on the other side opposite to the oil inlet 1.1. A degassing chamber upper cover 2 is provided on the upper part of the degassing chamber 1, and the degassing chamber upper cover 2 is provided with an outlet that connects the inside and outside of the degassing chamber 1, and the gas precipitated from the transformer oil is sucked into the cylinder by the vacuum pump through the outlet to collect gas.

[0029] Furthermore, a stirring structure is provided at the bottom of the degassing chamber 1, and the stirring structure includes a stirring member 3 and a flow stabilizer 4. The flow stabilizer 4 is a plate-like structure covering the upper part of the oil inlet 1.1, and fine through holes 4.1 are distributed on the plate-like structure. When the transformer oil flows out from the oil inlet 1.1, it flows into the degassing chamber 1 through the through holes 4.1, which can effectively eliminate the generation of bubbles. The stirring member 3 is a rotatable magnetic rotor provided on the upper part of the flow stabilizer 4, and a stirring motor 5 for driving the stirring member 3 to rotate is provided at the lower part of the flow stabilizer 4. The rotation of the stirring motor 5 drives the N / S magnetic pole to rotate, and then drives the magnetic stirring member 3 to rotate, thereby accelerating the degassing of the transformer oil.

[0030] Furthermore, a bubbling tube 6 and a liquid level sensor 7 are provided inside the degassing chamber 1. The bubbling tube 6 is close to the inner wall of the degassing chamber 1 and extends downward to the bottom of the degassing chamber 1, extends upward to the upper cover 2 of the degassing chamber and is connected to the outside. The bubbling tube 6 can be used to circulate and bubble the degassing gas, so that the gas and oil are fully in contact to bring out the gas in the oil. The liquid level sensor 7 is arranged in the middle area of ​​the degassing chamber 1 and extends downward. The liquid level sensor 7 can be used to detect the oil level, which can ensure that the volume of oil entering the degassing chamber 1 each time is a fixed value.

[0031] Specifically, the through hole 4.1 on the flow stabilizer 4 can also prevent the oil from splashing upward due to excessive oil pressure when the oil enters the degassing chamber 1, thereby preventing the splashed oil from affecting the liquid level sensor 7 and causing the liquid level sensor 7 to misjudge.

[0032] Furthermore, conical protrusions 1.3 are formed on opposite sides of the inner wall of the degassing chamber 1. The conical protrusions 1.3 can prevent the stirring element 3 from causing the oil to swirl when stirring, so that the transformer oil can be more fully gassed.

[0033] Furthermore, the degassing chamber 1 is provided with a temperature control housing 8, and the temperature in the degassing chamber 1 can be controlled by the temperature control housing 8, thereby changing the degassing efficiency of the transformer oil.

[0034] During the operation of the equipment, the transformer oil entering the degassing chamber 1 through the oil inlet 1.1 will generate bubbles after stirring and the temperature rises. The embodiment of the present application raises the degassing chamber 1 so that there is a corresponding space between the air outlet and the oil level, which can effectively prevent the bubbles from being drawn into the vacuum pump when the vacuum pump is pumping air.

[0035] Working principle: Transformer oil enters the degassing chamber 1 through the oil inlet 1.1. When the liquid level reaches the specified position, the oil inlet is stopped, the stirring motor 5 is turned on, and the stirring element 3 rotates to accelerate the degassing of the transformer oil. The degassing gas is circulated and bubbled by the vacuum pump to fully analyze the gas in the oil, and then the gas is pumped to the cylinder through the outlet of the degassing chamber upper cover 2 by the vacuum pump for gas collection.

[0036] Those skilled in the art should understand that the technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A degassing device for transformer oil, characterized in that: It comprises a degassing chamber which can form a vacuum-sealed environment, wherein an oil inlet and an oil outlet are respectively arranged at the lower part of the degassing chamber, a degassing chamber upper cover is arranged at the upper part of the degassing chamber, and the degassing chamber upper cover is provided with an outlet connecting the inside and the outside of the degassing chamber, a stirring structure is arranged at the bottom of the degassing chamber, the stirring structure comprises a stirring member and a flow stabilizing member, the flow stabilizing member is arranged at the upper part of the oil inlet, and the stirring member is rotatably arranged at the upper part of the flow stabilizing member, a bubbling tube and a liquid level sensor are arranged in the degassing chamber, and the bubbling tube extends downward to the bottom of the degassing chamber.

2. A transformer oil degassing device according to claim 1, characterized in that: The flow stabilizer is a plate-like structure covering the upper part of the oil inlet. Through holes are distributed on the flow stabilizer, and the transformer oil can only flow into the degassing chamber from the through holes.

3. A transformer oil degassing device according to claim 2, characterized in that: The stirring member is a rotor arranged on the upper part of the flow stabilizing member, and a stirring motor for driving the stirring member to rotate is arranged at the lower part of the flow stabilizing member.

4. A transformer oil degassing device according to claim 3, characterized in that: The stirring element is a magnetic rotor.

5. A transformer oil degassing device according to claim 1, characterized in that: A convex portion is formed on the inner wall of the degassing chamber.

6. A transformer oil degassing device according to claim 5, characterized in that: The protrusions are formed on both sides of the inner wall of the degassing chamber.

7. A transformer oil degassing device according to claim 6, characterized in that: The protrusion is in a conical structure.

8. A transformer oil degassing device according to any one of claims 1 to 7, characterized in that: The liquid level sensor is arranged in the middle area of ​​the degassing chamber and extends downward.

9. A transformer oil degassing device according to any one of claims 1 to 7, characterized in that: The oil inlet is arranged at one side of the lower part of the degassing chamber, and the oil outlet is arranged at the other side opposite to the oil inlet.

10. A transformer oil degassing device according to any one of claims 1 to 7, characterized in that: The outer shell of the degassing chamber is provided with a temperature control shell.

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