Moisture absorption device for transformer

Abstract

The utility model provides a moisture absorption device for a transformer, which is characterized by comprising a lower guide pipe, a first connecting flange arranged at the upper end of the lower guide pipe and a second connecting flange arranged at the lower end of the lower guide pipe, the first connecting flange is connected with the transformer through a bolt, and the second connecting flange is connected with a moisture absorber through a bolt. The upper end of the lower guide pipe is communicated with the transformer oil cavity through a first connecting flange, and the lower end of the lower guide pipe is communicated with the moisture absorber drying cavity through a second connecting flange. The mounting height of the moisture absorber can be effectively reduced through the lower guide pipe, so that a worker can conveniently stand on the ground to replace the moisture absorbent or operate and maintain the moisture absorber. And the moisture absorber can be replaced under the condition that the equipment is electrified by using the insulating lower guide pipe, so that the adverse effect of power failure on the equipment and a power grid is avoided. The lower guide pipe and the transformer shell are connected through the fixing rod, so that the stability of the lower guide pipe and the moisture absorber is improved, and normal operation in severe weather is ensured.

Description

Technical Field

[0001] The utility model relates to a moisture absorption device, in particular to a moisture absorption device for a transformer, belonging to the technical field of electric power engineering. Background Art

[0002] The moisture absorber is an important component of the transformer. Through the moisture absorber, the moisture entering the transformer can be effectively adsorbed and stored. At the same time, through the breathing function, dry air is introduced into the transformer interior to form a benign gas cycle. This process not only reduces the humidity level inside the transformer, but also reduces the deposition of dust and dirt inside the transformer by keeping the air fresh, further improving the insulation performance and operation efficiency of the transformer. The moisture absorber mainly uses materials such as silica gel and lithium chloride as moisture absorbents. When the moisture absorbent in the moisture absorber reaches saturation after absorbing moisture, new moisture absorbent needs to be replaced to ensure the normal operation of the moisture absorber. Since most transformers are installed at a relatively high position from the ground, and the moisture absorber is located at the upper part of the transformer, workers can only use equipment such as ladders and elevators to climb high to carry out the operation of replacing the moisture absorbent. Such an operation method is not only extremely inefficient, but also very dangerous for working at heights. In addition, because the moisture absorber is close to the live part of the transformer, power must be cut off during operation and maintenance to carry out the replacement of the moisture absorbent, which affects the normal power consumption of users and also has an adverse impact on the stable operation of the power grid. Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0003] To solve the problems of low operation efficiency, high danger of working at heights, and affecting the normal operation of the power grid caused by the inconvenient replacement of the moisture absorbent in the existing moisture absorption device for transformers, the utility model provides a moisture absorption device for transformers.

[0004] The utility model is completed through the following technical solutions: A moisture absorption device for a transformer, characterized by comprising a lower lead pipe, a first connecting flange arranged at the upper end of the lower lead pipe, and a second connecting flange arranged at the lower end of the lower lead pipe. The first connecting flange is connected to the transformer through bolts, and the second connecting flange is connected to the moisture absorber through bolts. The upper end of the lower lead pipe is communicated with the transformer oil chamber through the first connecting flange, and the lower end is communicated with the drying chamber of the moisture absorber through the second connecting flange. A horizontal fixing rod is arranged on the lower lead pipe, so that the moisture in the transformer at a high position can be introduced into the drying chamber of the moisture absorber at a low position through the lower lead pipe, thereby facilitating the workers to stand on the ground to replace the moisture absorbent and enabling the operation to be carried out while energized.

[0005] The lower lead pipe is set as a vertical long pipe, and the length of the lower lead pipe is adapted to the installation height of the transformer, so as to guide the installation position of the moisture absorber from a high position to a low position through the lower lead pipe, thus facilitating the operation and maintenance of the workers.

[0006] The lower lead pipe is made of insulating pipe, which facilitates operations such as replacing the moisture absorbent even under live conditions, and avoids the adverse effects on equipment and the power grid caused by power outages.

[0007] The first connecting flange is provided with a plurality of radial through grooves with openings at the outer ends. The plurality of radial through grooves are evenly spaced on the first connecting flange. Bolts pass through the corresponding radial through grooves and are connected to the flange on the transformer, so that the lower lead pipe can be suitable for transformers of different models through the plurality of radial through grooves.

[0008] The shape of the second connecting flange is adapted to the shape of the moisture absorber connecting flange, so as to improve the adaptability between the lower lead pipe and the moisture absorber.

[0009] Sealing rings or gaskets are provided on both the first connecting flange and the second connecting flange, so as to improve the sealing performance at the flange connection and prevent air leakage.

[0010] One end of the horizontal fixing rod is connected to the lower lead pipe, and the other end is connected to the transformer housing or the transformer support, so as to improve the stability of the lower lead pipe and the moisture absorber through the horizontal fixing rod and ensure normal operation under bad weather conditions.

[0011] The utility model has the following advantages and effects: By adopting the above scheme, the installation height of the moisture absorber can be effectively reduced through the lower lead pipe, so that it is convenient for the staff to stand on the ground to replace the moisture absorbent or maintain the moisture absorber. The use of the insulating lower lead pipe enables the replacement of the moisture absorber to be carried out under live conditions of the equipment, avoiding the adverse effects on equipment and the power grid caused by power outages. The lower lead pipe is connected to the transformer housing through the fixing rod, thereby improving the stability of the lower lead pipe and the moisture absorber and ensuring normal operation under bad weather conditions. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] In the figure, 1. Moisture absorber, 2. Lower lead pipe, 3. First connecting flange, 4. Radial through groove, 5. Gasket, 6. Horizontal fixing rod, 7. Second connecting flange. Detailed Embodiments

[0015] 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 the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0016] The moisture absorption device for a transformer provided by the present utility model includes a lower lead pipe 2, a first connection flange 3 provided at the upper end of the lower lead pipe 2, and a second connection flange 7 provided at the lower end of the lower lead pipe 2. The first connection flange 3 is connected to the transformer by bolts, and the second connection flange 7 is connected to the moisture absorber 1 by bolts. The upper end of the lower lead pipe 2 is communicated with the transformer oil chamber through the first connection flange 3, and the lower end is communicated with the drying chamber of the moisture absorber 1 through the second connection flange 7. A horizontal fixing rod 6 is provided on the lower lead pipe 2, so as to introduce the moisture in the transformer at a high position into the drying chamber of the moisture absorber 1 at a low position through the lower lead pipe 2, thereby facilitating the staff to replace the moisture absorbent while standing on the ground and enabling live operation;

[0017] The lower lead pipe 2 is provided as a vertical long pipe, and the length of the lower lead pipe 2 is adapted to the installation height of the transformer, so as to guide the installation position of the moisture absorber from a high position to a low position through the lower lead pipe 2, thereby facilitating the operation and maintenance of the staff;

[0018] The lower lead pipe 2 is provided as an insulating pipe to facilitate operations such as replacing the moisture absorbent even under live conditions, and to avoid the adverse effects caused by power outage on the equipment and the power grid;

[0019] A plurality of radially open radial through grooves 4 are provided on the first connection flange 3, and the plurality of radial through grooves 4 are evenly spaced on the first connection flange 3. Bolts pass through the corresponding radial through grooves 4 and are connected to the flange on the transformer, so that the lower lead pipe 2 can be adapted to different models of transformers through the plurality of radial through grooves 4;

[0020] The shape of the second connection flange 7 is adapted to the shape of the connection flange of the moisture absorber 1 to improve the adaptability between the lower lead pipe 2 and the moisture absorber 1;

[0021] Sealing gaskets 5 are provided on both the first connection flange 3 and the second connection flange 7 to improve the sealing performance of the flange connection and prevent air leakage;

[0022] One end of the horizontal fixing rod 6 is connected to the lower lead pipe 2, and the other end is connected to the transformer housing or the transformer support, so as to improve the stability of the lower lead pipe 2 and the moisture absorber 1 through the horizontal fixing rod 6 and ensure normal operation under bad weather conditions.

[0023] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A moisture absorption device for a transformer, characterized in that It includes a downward leading pipe, a first connecting flange provided at the upper end of the downward leading pipe, and a second connecting flange provided at the lower end of the downward leading pipe. The first connecting flange is connected to the transformer by bolts, and the second connecting flange is connected to the breather by bolts. The upper end of the downward leading pipe is communicated with the transformer oil chamber through the first connecting flange, and the lower end is communicated with the breather drying chamber through the second connecting flange. A horizontal fixing rod is provided on the downward leading pipe.

2. The moisture absorption device for a transformer according to claim 1, characterized in that The downward leading pipe is set as a vertical long pipe, and the length of the downward leading pipe is adapted to the installation height of the transformer.

3. The moisture absorption device for a transformer according to claim 1, characterized in that The downward leading pipe is set as an insulating pipe.

4. The moisture absorption device for a transformer according to claim 1, wherein Multiple radial through grooves with openings at the outer ends are provided on the first connecting flange, and the multiple radial through grooves are evenly spaced on the first connecting flange. The bolts pass through the corresponding radial through grooves and are connected to the flange on the transformer.

5. The moisture absorption device for a transformer according to claim 1, wherein The shape of the second connecting flange is adapted to the shape of the breather connecting flange.

6. The moisture absorption device for a transformer according to claim 1, characterized in that Sealing rings or gaskets are provided on both the first connecting flange and the second connecting flange.

7. The moisture absorption device for a transformer according to claim 1, characterized in that One end of the horizontal fixing rod is connected to the downward leading pipe, and the other end is connected to the transformer housing or the transformer support.

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