Transformer with transformer oil convenient to replace

Abstract

The utility model belongs to the technical field of transformers, and particularly relates to a transformer convenient for replacing transformer oil, which comprises a transformer oil tank, the upper surface of the transformer oil tank is fixedly connected with a driving motor, and the driving end of the driving motor penetrates through the transformer oil tank and is fixedly connected with an adjusting lead screw. The surface of the adjusting lead screw is in threaded connection with a sliding block, a limiting rod is arranged on the outer side wall of the sliding block in a penetrating mode, the two ends of the limiting rod are fixedly connected with the inner wall of the transformer oil tank correspondingly, a detection assembly is installed on the surface of the sliding block, and a conveying and filtering assembly is installed on the side wall of the sliding block. According to the utility model, the transformer oil in the transformer oil tank is detected through the detection assembly, and the height of the detection assembly can be adjusted, so that the transformer oil at different depths can be conveniently detected, the detection range is expanded, the detected data is more comprehensive, and a worker can conveniently change the transformer oil in time according to the detected data.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically a transformer that facilitates the replacement of transformer oil. Background Technology

[0002] Large transformers are generally oil-immersed transformers with an oil-paper insulation structure. Transformer oil plays a role in insulation, cooling, and arc suppression in the transformer. During operation, due to the effects of heat and electricity, the transformer oil will gradually age and decompose, producing small amounts of low-molecular-weight hydrocarbons (hydrogen, methane, carbon monoxide, carbon dioxide, ethylene, etc.), which may lead to latent faults. Therefore, it is necessary to test and analyze the transformer oil.

[0003] Existing transformer oil testing methods often cannot achieve online monitoring or display the status data of the transformer oil in a timely and intuitive manner, making them inconvenient to use and difficult to remind staff to change the transformer oil in a timely manner. Therefore, this paper proposes a transformer that facilitates transformer oil replacement to address the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this utility model proposes a transformer that facilitates the replacement of transformer oil.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A transformer for easy replacement of transformer oil, comprising a transformer oil tank, a drive motor fixedly connected to the upper surface of the transformer oil tank, an adjusting screw fixedly connected to the drive end of the drive motor penetrating the transformer oil tank, a slider threadedly connected to the surface of the adjusting screw, a limit rod penetrating the outer wall of the slider, both ends of the limit rod being fixedly connected to the inner wall of the transformer oil tank, a detection component installed on the surface of the slider, and a conveying and filtering component installed on the side wall of the slider. The conveying and filtering component includes an L-shaped extrusion rod and a piston cylinder, one end of the extrusion rod being fixedly connected to the slider, and the other end of the extrusion rod being fixedly connected to a piston block. A filter tube is fixedly installed on the lower side wall of the piston cylinder, the other end of the filter tube penetrating from the lower side of the transformer oil tank and penetrating into the transformer oil tank from the upper side, and an oil purifier fixedly installed on the surface of the filter tube.

[0006] Preferably, the detection component includes an L-shaped mounting bracket, one end of which is fixedly connected to a slider, and a detection probe is fixedly disposed on the surface of the mounting bracket.

[0007] Preferably, the detection probe is provided in two sets, upper and lower, and the detection probe is one or more of the following: dissolved gas in oil monitoring probe, moisture monitoring probe, or temperature monitoring probe.

[0008] Preferably, a liquid outlet check valve is fixedly installed at one end of the filter tube near the piston cylinder.

[0009] Preferably, the lower side wall of the piston cylinder is fixedly provided with a liquid inlet, and a liquid inlet check valve is fixedly provided on the surface of the liquid inlet.

[0010] Preferably, the oil purifier is equipped with an adsorbent layer and a filter screen inside, and the adsorbent layer is made of silica gel, activated alumina or granular clay.

[0011] Preferably, the filter tube includes a tube body one and a tube body two. The tube body one is located inside the transformer oil tank. A corrugated pipe is fixedly connected to the top end of the tube body one, and a connector one is fixedly connected to the top end of the corrugated pipe. The tube body two is located inside the transformer oil tank and a connector two is fixedly connected to one end.

[0012] Preferably, an installation chamber is fixedly connected to the upper surface of the transformer tank, an electric push rod is fixedly connected inside the installation chamber, the drive end of the electric push rod is fixedly connected to an L-shaped support frame, and the first coupling is fixedly connected to the lower end of the support frame.

[0013] The advantages of this utility model are:

[0014] 1. This utility model uses a detection component to detect the transformer oil in the transformer tank. The height of the detection component is adjustable, which facilitates the detection of transformer oil at different depths, expands the detection range, makes the detection data more comprehensive, and makes it easier for staff to replace the transformer oil in a timely manner based on the detection data.

[0015] 2. When the first and second connectors of this utility model are opened, the transformer oil relies on the temperature difference of the transformer oil to generate natural convection, allowing the oil to circulate in the oil purifier, thereby saving energy. When the first and second connectors are plugged in, the transformer oil is squeezed and transported through the sealing head, forcing the transformer oil to circulate in the oil purifier, which can improve the oil circulation speed and purification efficiency, and is not limited by oil temperature changes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the transformer oil tank of this utility model;

[0019] Figure 3 This is a schematic diagram of the conveying and filtering assembly structure of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0021] Figure 5 This utility model Figure 3 Enlarged view of point B.

[0022] In the diagram: 1. Transformer oil tank; 2. Drive motor; 3. Adjusting screw; 4. Slider; 5. Limit rod; 6. Detection assembly; 61. Mounting frame; 62. Detection probe; 7. Conveying and filtering assembly; 71. Extrusion rod; 72. Piston cylinder; 73. Piston block; 74. Filter tube; 75. Oil purifier; 76. Inlet end; 77. Inlet check valve; 78. Outlet check valve; 741. Pipe body one; 742. Pipe body two; 743. Bellows; 744. Connector one; 745. Connector two; 8. Mounting chamber; 9. Electric push rod; 10. Support frame; 11. Inlet end; 12. Outlet end. Detailed Implementation

[0023] 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 scope of protection of the present utility model.

[0024] Please see Figure 1-5As shown, a transformer for easy oil replacement includes a transformer oil tank 1. A drive motor 2 is fixedly connected to the upper surface of the transformer oil tank 1. The drive end of the drive motor 2 passes through the transformer oil tank 1 and is fixedly connected to an adjusting screw 3. The bottom end of the adjusting screw 3 is rotatably connected to the inner bottom wall of the transformer oil tank 1. A sealing ring is fixedly installed at the intersection of the transformer oil tank 1 and the drive end of the drive motor 2 for sealing. The adjusting screw 3 can be a reciprocating screw. A slider 4 is threadedly connected to the surface of the adjusting screw 3. A limit rod 5 is provided through the outer wall of the slider 4. The two ends of the limit rod 5 are fixedly connected to the inner wall of the transformer oil tank 1. A detection component 6 is installed on the surface of the slider 4, and a conveying and filtering component 7 is installed on the side wall of the slider 4. The filter assembly 7 includes an L-shaped extrusion rod 71 and a piston cylinder 72. One end of the extrusion rod 71 is fixedly connected to the slider 4, and the other end of the extrusion rod 71 is fixedly connected to a piston block 73. The piston block 73 is coaxially arranged with the piston cylinder 72. A filter tube 74 is fixedly arranged on the lower side wall of the piston cylinder 72. The other end of the filter tube 74 passes through the lower side of the transformer oil tank 1 and passes through the upper side of the transformer oil tank 1. The filter tube (74) is sealed and fixedly connected to the transformer oil tank 1 at the intersection. An oil purifier 75 is fixedly arranged on the surface of the filter tube 74. The drive motor 2 is electrically connected to a controller. The controller is electrically connected to the detection assembly 6 and is electrically connected to a display screen. The display screen is used to display the data detected by the detection assembly 6.

[0025] Specifically, during operation of the oil-immersed transformer, the transformer oil in the transformer tank 1 is detected by the detection component 6. The drive motor 2 drives the adjusting screw 3 to rotate, which in turn drives the slider 4 to rise and fall along the limit rod 5. This allows for adjustment of the height of the detection component 6, enabling the detection of transformer oil at different depths, expanding the detection range, and providing more comprehensive data. This facilitates timely replacement of the transformer oil by the staff based on the detected data. After the detection is completed, the detection component 6 is turned off. Since the purification effect of the temperature difference circulating oil purifier 75 is greatly affected by changes in oil temperature, the drive motor 2 drives the slider 4 to rise and fall repeatedly. This causes the extrusion rod 71 to descend, driving the piston block 73 into the interior of the piston cylinder 72. The transformer oil inside the piston cylinder 72 is then pressurized and forced into the oil purifier 75 through the filter tube 74 for purification. This improves the purification efficiency of the oil purifier 75 and is unaffected by oil temperature.

[0026] The detection component 6 includes an L-shaped mounting bracket 61. One end of the mounting bracket 61 is fixedly connected to the slider 4. A detection probe 62 is fixedly mounted on the surface of the mounting bracket 61. The detection probe 62 is provided in two sets, upper and lower. The detection probe 62 adopts one or more of the following: dissolved gas in oil monitoring probe, moisture monitoring probe, or temperature monitoring probe.

[0027] Specifically, the upper and lower sets of detection probes 62 can comprehensively detect transformer oil at different depths along a straight line. The dissolved gas monitoring probe detects the concentration of dissolved gases such as hydrogen, methane, ethane, ethylene, and acetylene in the transformer oil to determine whether there are faults such as overheating or discharge inside the transformer. The moisture monitoring probe measures the moisture content in the transformer oil, and the temperature monitoring probe measures the temperature change of the transformer oil.

[0028] A liquid outlet check valve 78 is fixedly installed at one end of the filter tube 74 near the piston cylinder 72.

[0029] Specifically, the one-way valve 78 is used to control the oil inside the piston cylinder 72 to flow out of the delivery pipe in one direction, so as to prevent the piston block 73 from sucking in the oil inside the delivery pipe when it rises.

[0030] A liquid inlet is fixedly provided on the lower side wall of the piston cylinder 72, and a liquid inlet check valve 77 is fixedly provided on the surface of the liquid inlet.

[0031] Specifically, the inlet check valve 77 is used to control the unidirectional flow of oil in the transformer oil tank 1 into the piston cylinder 72, so that when the piston block 73 rises, the piston cylinder 72 draws in oil through the inlet.

[0032] The oil purifier 75 has an adsorbent layer and a filter screen installed inside. The filter screen is located above and below the adsorbent layer to limit the adsorbent layer. The adsorbent layer is made of silica gel, activated alumina or granular clay. The adsorbent layer can absorb harmful substances in the oil, such as water, free carbon, oxides, etc.

[0033] The filter tube 74 includes a tube body 741 and a tube body 742. The tube body 741 is located inside the transformer tank 1. A corrugated pipe 743 is fixedly connected to the top of the tube body 741. A connector 744 is fixedly connected to the top of the corrugated pipe 743. A connector 745 is fixedly connected to one end of the tube body 742 inside the transformer tank 1. An installation chamber 8 is fixedly connected to the upper surface of the transformer tank 1. An electric push rod 9 is fixedly connected inside the installation chamber 8. An L-shaped support frame 10 is fixedly connected to the drive end of the electric push rod 9. The connector 744 is fixedly connected to the lower end of the support frame 10. The controller is electrically connected to the electric push rod 9.

[0034] Specifically, connector 1 (744) and connector 2 (745) can be plugged into each other. When the temperature monitoring probe detects that the transformer oil temperature is high, it transmits a signal to the controller. The controller controls the electric push rod 9 to extend, which causes connector 1 (744) to descend, thereby opening connector 2 (745). This allows the transformer oil to circulate naturally due to the temperature difference, thus saving energy. When the transformer oil temperature is normal and purification is required, the electric push rod 9 retracts, causing connector 1 (744) to rise, allowing connector 1 (744) and connector 2 (745) to plug into each other, connecting pipe body 1 (741) and pipe body 2 (742). At this time, the transformer oil is squeezed and transported through the sealing head, forcing the transformer oil to circulate in the oil purifier 75, which can improve the oil circulation speed and purification efficiency, and is not limited by oil temperature changes.

[0035] The upper surface of the transformer oil tank 1 is fixedly connected to the liquid inlet 7611, and the lower side wall of the transformer oil tank 1 is fixedly provided with the liquid outlet 12. Valves are installed on the liquid inlet 7611 and the liquid outlet 12 respectively.

[0036] Specifically, the transformer oil can be replaced by opening the inlet end 7611, and the transformer oil can be drained by opening the outlet end 12.

[0037] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0038] Working principle: When the oil-immersed transformer is in operation, the detection component 6 detects the transformer oil in the transformer tank 1. The drive motor 2 drives the adjusting screw 3 to rotate, which in turn drives the slider 4 to rise and fall along the limit rod 5. This allows for the adjustment of the height of the detection component 6, enabling the detection of transformer oil at different depths, expanding the detection range, and making the detection data more comprehensive. This facilitates timely replacement of the transformer oil by the staff based on the detection data. After the detection is completed, the detection component 6 is turned off. Since the purification effect of the temperature difference circulating oil purifier 75 is greatly affected by changes in oil temperature, the drive motor 2 drives the slider 4 to rise and fall repeatedly. This causes the extrusion rod 71 to descend, driving the piston block 73 into the interior of the piston cylinder 72. This forces the transformer oil inside the piston cylinder 72 through the filter tube 74 and pressurizes it into the oil purifier 75 for purification, thereby improving the purification efficiency of the oil purifier 75 and making it unaffected by oil temperature.

[0039] When the temperature monitoring probe detects a high transformer oil temperature, it transmits a signal to the controller. The controller then controls the electric push rod 9 to extend, causing the first connector 744 to descend, thereby opening the second connector 745. This allows the transformer oil to generate natural convection due to the temperature difference. At this time, the drive motor 2 can stop running when not in a detection state, allowing the oil to circulate within the oil purifier 75, thus saving energy. When the transformer oil temperature is normal and purification is required, the electric push rod 9 retracts, causing the first connector 744 to rise, allowing the first connector 744 to plug into the second connector 745, thus connecting the first pipe body 741 and the second pipe body 742. At this time, the transformer oil is squeezed and transported through the sealing head, forcing the transformer oil to circulate within the oil purifier 75, which can improve the oil circulation speed and purification efficiency, and is not limited by oil temperature changes.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A transformer for easy oil replacement, comprising a transformer oil tank, characterized in that: A drive motor is fixedly connected to the upper surface of the transformer oil tank. The drive end of the drive motor passes through the transformer oil tank and is fixedly connected to an adjusting screw. A slider is threaded onto the surface of the adjusting screw. A limit rod is provided through the outer wall of the slider. The two ends of the limit rod are fixedly connected to the inner wall of the transformer oil tank. A detection component is installed on the surface of the slider. A conveying and filtering component is installed on the side wall of the slider. The conveying and filtering component includes an L-shaped extrusion rod and a piston cylinder. One end of the extrusion rod is fixedly connected to the slider, and the other end of the extrusion rod is fixedly connected to a piston block. A filter tube is fixedly provided on the lower side wall of the piston cylinder. The other end of the filter tube passes through the lower side of the transformer oil tank and enters the transformer oil tank from the upper side. An oil purifier is fixedly provided on the surface of the filter tube.

2. The transformer for easy oil replacement according to claim 1, characterized in that: The detection component includes an L-shaped mounting bracket, one end of which is fixedly connected to a slider, and a detection probe is fixedly mounted on the surface of the mounting bracket.

3. The transformer for easy oil replacement according to claim 2, characterized in that: The detection probe is provided in two sets, upper and lower, and the detection probe is one or more of the following: dissolved gas in oil monitoring probe, moisture monitoring probe, or temperature monitoring probe.

4. The transformer for easy oil replacement according to claim 1, characterized in that... A liquid outlet check valve is fixedly installed at one end of the filter tube near the piston cylinder.

5. The transformer for easy oil replacement according to claim 1, characterized in that: A liquid inlet is fixedly provided on the lower side wall of the piston cylinder, and a liquid inlet check valve is fixedly provided on the surface of the liquid inlet.

6. The transformer for easy oil replacement according to claim 1, characterized in that: The oil purifier is equipped with an adsorbent layer and a filter screen inside. The adsorbent layer is made of silica gel, activated alumina, or granular clay.

7. The transformer for easy oil replacement according to claim 1, characterized in that: The filter tube includes a tube body one and a tube body two. The tube body one is located inside the transformer oil tank. A corrugated pipe is fixedly connected to the top end of the tube body one, and a connector one is fixedly connected to the top end of the corrugated pipe. The tube body two is located inside the transformer oil tank and a connector two is fixedly connected to one end.

8. The transformer for easy oil replacement according to claim 7, characterized in that: An installation chamber is fixedly connected to the upper surface of the transformer tank. An electric push rod is fixedly connected inside the installation chamber. The drive end of the electric push rod passes through the installation chamber and the transformer tank fixed connection frame and has an L-shaped support frame. The first connector is fixedly connected to the lower end of the support frame.

9. The transformer for easy oil replacement according to claim 1, characterized in that: The upper surface of the transformer oil tank is fixedly connected to an inlet end, and the lower side wall of the transformer oil tank is fixedly provided with an outlet end.

Images