Protection device for off-circuit tap-changer of dry-type transformer

Abstract

The utility model provides a protection device for an off-circuit tap-changer of a dry-type transformer, which belongs to the technical field of production and manufacturing of dry-type transformers and comprises a transformer. The top plate is connected to the upper end of the transformer, and bolts are in threaded connection between the transformer and the top plate; the second demultiplexer is fixedly connected to the upper end of the top plate, and the bottom of the second demultiplexer is connected with the transformer; through the design of the protective shell, the fixing bolt, the clamping block, the rubber sealing ring and the spring, physical protection is provided for the tap switch, external factors such as dust, water or other pollutants are prevented from entering the tap switch, normal operation of the tap switch is guaranteed, and the service life of the tap switch is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry-type transformer production and manufacturing, and particularly relates to a protection device for an off-circuit tap-changer of a dry-type transformer. Background Art

[0002] In the power system, a transformer is a key power transmission and distribution device, which is responsible for converting the voltage from one level to another. The main parts of a transformer include an iron core and coils. The coils are usually wound with copper or aluminum wires, which can be single-layer or multi-layer, and can be dry-type or oil-immersed. The structure and shape of the coils have an important impact on the performance and efficiency of the transformer.

[0003] In the manufacturing and maintenance process of a transformer, an off-circuit tap-changer is an important component. The tap-changer is used to adjust the output voltage of the transformer to adapt to different power demands. The off-circuit tap-changer needs to withstand large currents and voltages during operation, so special protection measures are required.

[0004] Traditional protection measures may include using a housing or box to protect the tap-changer, but these methods may not be sufficient to provide adequate protection, especially when encountering external environmental factors such as dust, moisture or other contaminants during operation. In addition, traditional protection measures may not be strong enough and are prone to damage or looseness during operation, resulting in damage to the tap-changer. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a protection device for an off-circuit tap-changer of a dry-type transformer, aiming to solve the problems in the prior art that using a housing or box to protect the tap-changer may not be sufficient to provide adequate protection, especially when encountering external environmental factors such as dust, moisture or other contaminants during operation. In addition, traditional protection measures may not be strong enough and are prone to damage or looseness during operation, resulting in damage to the tap-changer.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A protection device for an off-circuit tap-changer of a dry-type transformer, comprising:

[0008] A transformer;

[0009] A top plate, the top plate is connected to the upper end of the transformer, and bolts are threadedly connected between the transformer and the top plate;

[0010] A second tap-changer, the second tap-changer is fixedly connected to the upper end of the top plate, and the bottom of the second tap-changer is connected to the transformer; and

[0011] Protective mechanism, the protective mechanism includes a protective shell, a fixing bolt, a clamping block, a rubber sealing ring and a spring. The protective shell is sleeved and connected to the circumferential surface of the second tap changer. The fixing bolt is threadedly connected to the upper end of the top plate. The clamping block is fixedly connected to the fixing bolt. The fixing bolt is clamped with the second tap changer. The rubber sealing ring is sleeved and connected between the protective shell and the fixing bolt. The spring is sleeved and connected between the top plate and the fixing bolt.

[0012] As a preferred solution of the present utility model, a pull ring is fixedly connected to the upper end of the top plate.

[0013] As a preferred solution of the present utility model, a first tap changer is provided at the upper end of the top plate.

[0014] As a preferred solution of the present utility model, an upper connection port is fixedly connected to the upper end of the top plate, and a lower connection port is fixedly connected to the side end of the transformer.

[0015] As a preferred solution of the present utility model, a radiator is provided at the side end of the transformer.

[0016] As a preferred solution of the present utility model, a chassis is fixedly connected to the lower end of the transformer.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. In this solution: The design of the protective shell, fixing bolt, clamping block, rubber sealing ring and spring provides physical protection for the tap changer, preventing external factors such as dust, moisture or other pollutants from entering the inside of the tap changer, thus ensuring the normal operation of the tap changer and extending its service life. The design of the pull ring enables the operator to easily grasp and pull the top plate to facilitate opening or closing the second tap changer, simplifies the operation process, improves work efficiency, and reduces safety risks during the operation.

[0019] 2. In this solution: The design of the first tap changer enables the operator to conveniently adjust the output voltage of the transformer through the first tap changer on the top plate, so as to adapt to different power demands, improve the operation efficiency and performance of the transformer. The design of the radiator helps to maintain the transformer operating at an appropriate temperature, improves its operation efficiency and performance, and at the same time extends the service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0021] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0022] Figure 2 This is the structural explosion diagram in the present utility model;

[0023] Figure 3 This is the present utility model Figure 2 The enlarged structural diagram at the tap-changer in the present utility model;

[0024] Figure 4 This is the present utility model Figure 3 The structural explosion diagram at the tap-changer in the present utility model;

[0025] In the figure: 1, transformer; 2, top plate; 3, bolt; 4, pull ring; 5, upper connection port; 6, first tap-changer; 7, second tap-changer; 8, connection bolt; 9, protective shell; 10, fixing bolt; 11, clamping block; 12, rubber sealing ring; 13, spring; 14, radiator; 15, lower connection port; 16, chassis. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment

[0028] Please refer to Figures 1-4 , the present utility model provides the following technical solutions:

[0029] A protection device for the off-circuit tap-changer of a dry-type transformer, comprising:

[0030] Transformer 1;

[0031] Top plate 2, the top plate 2 is connected to the upper end of the transformer 1, and a bolt 3 is threadedly connected between the transformer 1 and the top plate 2;

[0032] Second tap-changer 7, the second tap-changer 7 is fixedly connected to the upper end of the top plate 2, and the bottom of the second tap-changer 7 is connected to the transformer 1; and

[0033] A protection mechanism, the protection mechanism includes a protective shell 9, a fixing bolt 10, a clamping block 11, a rubber sealing ring 12 and a spring 13. The protective shell 9 is sleeved and connected to the circumferential surface of the second tap-changer 7. The fixing bolt 10 is threadedly connected to the upper end of the top plate 2. The clamping block 11 is fixedly connected to the fixing bolt 10. The fixing bolt 10 is clamped with the second tap-changer 7. The rubber sealing ring 12 is sleeved and connected between the protective shell 9 and the fixing bolt 10. The spring 13 is sleeved and connected between the top plate 2 and the fixing bolt 10.

[0034] In a specific embodiment of the present utility model, the transformer 1 is a device used in a power system to change the voltage level, and it contains a tap changer inside for adjusting the output voltage. The top plate 2 is fixedly connected to the upper end of the transformer 1, providing an installation platform for the tap changer. The top plate 2 and the transformer 1 are threadedly connected by bolts 3 to ensure the stability of the connection. The second tap changer 7 is fixedly connected to the upper end of the top plate 2, used to control the tap position of the transformer to change the output voltage. The bottom of the second tap changer 7 is connected to the transformer 1 to ensure the stability and functionality of the tap changer. Protection mechanism: The protective shell 9 is sleeved and connected to the circumferential surface of the second tap changer 7, providing physical protection for the tap changer to prevent damage to the tap changer by external factors. The fixing bolt 10 is threadedly connected to the upper end of the top plate 2, used to fix the protective shell 9 and the block 11. The fixing bolt 10 is clamped with the second tap changer 7 to ensure the stability and safety of the second tap changer 7 during operation. The block 11 is fixedly connected to the fixing bolt 10 and cooperates with the second tap changer 7 to prevent the tap changer from accidentally moving during operation. The rubber sealing ring 12 is sleeved and connected between the protective shell 9 and the fixing bolt 10, providing a sealing function to prevent moisture or other external substances from entering the inside of the tap changer. The spring 13 is sleeved and connected between the top plate 2 and the fixing bolt 10, providing a certain elasticity to reduce vibration and noise during operation. Through the combination of these components, the protection device of the off-circuit tap changer of the dry-type transformer of the present utility model provides an effective protection mechanism, which can prevent the tap changer from being damaged by external factors during operation, and at the same time ensure its stability and safety.

[0035] For details, please refer to Figures 1-4 , and a pull ring 4 is fixedly connected to the upper end of the top plate 2.

[0036] In this embodiment: The function of the pull ring 4 is to facilitate the operation and maintenance of the tap changer. Specifically, the setting of the pull ring 4 enables the operator to easily grasp and pull the top plate 2 to facilitate the opening or closing of the second tap changer 7.

[0037] For details, please refer to Figures 1-4 , and a first tap changer 6 is provided at the upper end of the top plate 2.

[0038] In this embodiment: The function of the tap changer 6 is to control the tap position of the transformer to change the output voltage. This design enables the operator to conveniently adjust the output voltage of the transformer through the first tap changer 6 on the top plate 2 to adapt to different power demands. Specifically, the first tap changer 6 is located at the upper end of the top plate 2, and the operator can manually operate the first tap changer 6 to switch the tap position of the transformer, thereby realizing the adjustment of the output voltage. This design makes the voltage adjustment of the transformer more convenient, without directly contacting the high-voltage part inside the transformer, improving the safety of operation.

[0039] For details, please refer to Figures 1-4 , an upper connection port 5 is fixedly connected to the upper end of the top plate 2, and a lower connection port 15 is fixedly connected to the side end of the transformer 1.

[0040] In this embodiment: an upper connection port 5 is fixedly connected to the upper end of the top plate 2, and a lower connection port 15 is fixedly connected to the side end of the transformer 1. Specifically, the upper connection port 5 is located at the upper end of the top plate 2 and is used to connect external devices or systems, such as temperature sensors, control circuits or other auxiliary devices. The lower connection port 15 is located at the side end of the transformer 1 and is used to connect external devices or systems, such as cables, ground wires or other electrical connections. By providing connection ports on the top plate 2 and the transformer 1, it is convenient to integrate external devices or systems with the transformer, improving the overall performance and operation convenience of the system.

[0041] For details, please refer to Figures 1-4 , a radiator 14 is provided at the side end of the transformer 1.

[0042] In this embodiment: a radiator 14 is provided at the side end of the transformer 1. The function of the radiator 14 is to help the transformer dissipate the heat generated inside, keep the transformer within an appropriate working temperature range, thereby extending the service life of the transformer and improving its operating efficiency. Specifically, the radiator 14 is installed at the side end of the transformer 1, which can effectively transfer the heat generated inside the transformer to the external environment for heat dissipation through natural convection or forced air cooling. This design helps prevent the transformer from overheating and reduces the possible failures or damages caused by excessive temperature.

[0043] For details, please refer to Figures 1-4 , a chassis 16 is fixedly connected to the lower end of the transformer 1.

[0044] In this embodiment: a chassis 16 is fixedly connected to the lower end of the transformer 1. The function of the chassis 16 is to provide support and fixation for the transformer 1, ensuring that the transformer remains stable during installation and use. Specifically, the chassis 16 is fixedly connected to the lower end of the transformer 1 to form a stable frame structure to provide support for the transformer. This design helps prevent the transformer from deforming or being damaged due to uneven stress during operation, ensuring the stability and safety of the transformer.

[0045] Working principle and usage process of the utility model: First, place the transformer 1 at a predetermined position to ensure its stability. Fix the top plate 2 to the upper end of the transformer 1 and connect them by screwing the bolt 3 to ensure a firm connection. Fix the second tap changer 7 to the upper end of the top plate 2 to ensure that the second tap changer 7 is connected to the bottom of the transformer 1. Install the protection mechanism, including the protection shell 9, fixing bolts 10, clamping blocks 11, rubber sealing rings 12 and springs 13, and ensure that they are correctly installed and cooperate with each other. Fix the pull ring 4 at the upper end of the top plate 2 for easy operation. Set the first tap changer 6 at the upper end of the top plate 2 for adjusting the output voltage of the transformer. Fix the upper connection port 5 at the upper end of the top plate 2 for connecting external devices or systems. Fix the lower connection port 15 at the side end of the transformer 1 for connecting external devices or systems. Set the radiator 14 at the side end of the transformer 1 to help dissipate the heat generated inside the transformer. Fix the bottom frame 16 at the lower end of the transformer 1 to provide support and fixation for the transformer. Check whether the installation of all components is correct to ensure that there is no looseness or damage. Conduct necessary tests to ensure that the protection device and tap changer work properly.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A protection device for a dry-type transformer off-excitation tap changer, characterized in that: include: Transformer (1); A top plate (2), the top plate (2) being connected to the upper end of the transformer (1), and a bolt (3) being threadedly connected between the transformer (1) and the top plate (2); A second tap (7), the second tap (7) being fixedly connected to the upper end of the top plate (2), and the bottom of the second tap (7) being connected to the transformer (1); and A protection mechanism, the protection mechanism comprising a protection shell (9), a fixing bolt (10), a clamping block (11), a rubber sealing ring (12) and a spring (13), the protection shell (9) being sleeved and connected to the circumferential surface of the second tap (7), the fixing bolt (10) being threadedly connected to the upper end of the top plate (2), the clamping block (11) being fixedly connected to the fixing bolt (10), the fixing bolt (10) being clamped with the second tap (7), the rubber sealing ring (12) being sleeved and connected between the protection shell (9) and the fixing bolt (10), and the spring (13) being sleeved and connected between the top plate (2) and the fixing bolt (10).

2. A protection device for a dry-type transformer off-excitation tap changer according to claim 1, characterized in that: A pull ring (4) is fixedly connected to the upper end of the top plate (2).

3. A protection device for a dry-type transformer off-excitation tap changer according to claim 2, characterized in that: A first tap (6) is provided at the upper end of the top plate (2).

4. A protection device for a dry-type transformer off-excitation tap changer according to claim 3, characterized in that: An upper connection port (5) is fixedly connected to the upper end of the top plate (2), and a lower connection port (15) is fixedly connected to the side end of the transformer (1).

5. A protection device for a dry-type transformer off-excitation tap changer according to claim 4, characterized in that: A heat sink (14) is provided at the side end of the transformer (1).

6. A protection device for a dry-type transformer off-excitation tap changer according to claim 5, characterized in that: The lower end of the transformer (1) is fixedly connected to a base frame (16).

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