Maintenance-free moisture absorber with oil cup at upper part

Abstract

The maintenance-free moisture absorber comprises a protective cover, a cavity is formed in the protective cover, the oil cup is arranged in the cavity, transformer oil is stored at the bottom of the oil cup, a pipeline is arranged in the oil cup, one end of the pipeline is communicated with an oil storage tank, and the other end of the pipeline extends into the transformer oil. A mounting cover is arranged below the protective cover, the mounting cover is connected with the protective cover, a drying agent is arranged in the mounting cover, and the interior of the mounting cover is communicated with the cavity; the oil cup is arranged at the top of the dehumidifier, gas flowing in or out of the oil storage tank firstly flows through the oil cup, transformer oil is stored at the bottom in the oil cup, gas-water separation is carried out on sucked gas and exhausted gas by utilizing the characteristic that the transformer oil is insoluble with water, and water is effectively prevented from being sucked into the oil storage tank.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer dehumidification, and particularly relates to a maintenance-free moisture absorber with an oil cup at the upper part. Background Art

[0002] The moisture absorber is installed on the oil storage tank of the oil-immersed transformer. The dehumidifier can dry, filter, and adsorb the gas discharged from and inhaled into the oil storage tank. After the existing dehumidifier is used for a long time, when the desiccant gets damp and reaches the preset limit humidity value, the moisture absorption capacity of the desiccant decreases, resulting in moisture in the air entering the transformer interior, thereby increasing the risk of transformer accidents, and the desiccant needs to be replaced in time. Content of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a maintenance-free moisture absorber with an oil cup at the upper part.

[0004] The technical solution adopted by the utility model is as follows: it includes a protective cover, a cavity is formed inside the protective cover, an oil cup is arranged inside the cavity, transformer oil is stored at the bottom of the oil cup, a pipeline is arranged inside the oil cup, one end of the pipeline is connected to the oil storage tank, and the other end of the pipeline extends into the transformer oil; an installation cover is arranged below the protective cover, the installation cover is connected to the protective cover, a desiccant is arranged inside the installation cover, and the interior of the installation cover is communicated with the cavity; a heating control box is arranged on one side of the desiccant, and the heating control box is fixedly installed with the installation cover.

[0005] As a preference of the utility model, an upper oil cup seat is arranged on the top of the protective cover, the upper oil cup seat is fixedly connected to the protective cover, a mounting seat is fixedly arranged on the upper oil cup seat, and the pipeline passes through the mounting seat and the upper oil cup seat to be connected to the oil storage tank.

[0006] As a preference of the utility model, one end of the protective cover away from the upper oil cup seat is provided with a lower oil cup base, a through hole is opened on the lower oil cup base, and the through hole penetrates through the lower oil cup base.

[0007] As a preference of the utility model, a moisture absorber top seat is arranged on one side of the lower oil cup base, one end of the moisture absorber top seat is fixedly connected to the lower oil cup base, the other end is fixedly connected to the installation cover, the moisture absorber top seat is in a hollow shape, and the cavity is communicated with the interior of the installation cover through the through hole and the moisture absorber top seat.

[0008] As a preference of the utility model, a moisture absorber base is arranged at the bottom of the installation cover, the moisture absorber base is fixedly connected to the installation cover, and an air inlet end is formed on the moisture absorber base, and the air inlet end is communicated with the interior of the installation cover.

[0009] Preferably, the heating control box is fixedly connected to the mounting cover through the L-shaped mounting plate and is located on one side of the top seat of the moisture absorber.

[0010] Preferably, a temperature and humidity detector is provided in the heating control box, and the detection end of the temperature and humidity detector extends into the mounting cover.

[0011] Preferably, ventilation holes are provided on the peripheral surface of the oil cup, and the inside of the oil cup communicates with the cavity through the ventilation holes.

[0012] The beneficial effects of the present utility model are as follows:

[0013] As a maintenance-free moisture absorber with an oil cup at the upper part, the present utility model sets an oil cup at the top of the dehumidifier, so that the gas flowing into or out of the storage oil tank first flows through the oil cup. Since transformer oil is stored at the bottom of the oil cup, by utilizing the immiscible property of transformer oil and water, the inhaled and discharged gases are separated from gas and water, effectively preventing moisture from being inhaled into the storage oil tank. Among them, a desiccant is provided at the bottom of the oil cup, and the desiccant can separate the inhaled gas. After long-term use of the desiccant, the desiccant absorbs moisture severely and becomes damp, resulting in insufficient absorption and drying of moisture. However, the oil cup on the top of the desiccant can further treat the gas to remove water, so as to prevent moisture from entering the storage oil tank and avoid the need for timely maintenance of the dehumidifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the present utility model in detail with reference to the drawings and specific implementation methods.

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic top view structure diagram of the present utility model;

[0017] Figure 3 is a schematic diagram of the gas flow direction during inhalation of the present utility model.

[0018] In the figure: 1, upper top seat of the oil cup; 2, lower base of the oil cup; 3, protective cover; 4, cavity; 5, oil cup; 6, transformer oil; 7, pipeline; 8, mounting seat; 9, top seat of the moisture absorber; 10, base of the moisture absorber; 11, mounting cover; 12, desiccant; 13, intake end; 14, heating control box; 15, ventilation hole; 16, L-shaped mounting plate; 17, through hole; 18, temperature and humidity detector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the following further details the present utility model 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 utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0021] The following Figures 1-3 describes the specific implementation manner of the present utility model. A maintenance-free moisture absorber with an upper oil cup includes a protective cover 3. A cavity 4 is formed inside the protective cover 3. An oil cup 5 is provided inside the cavity 4. The cavity 4 provides an installation space for the oil cup 5. Among them, the oil cup 5 serves as a transition space for the inhalation and exhalation of the gas in the storage oil tank, realizes the separation of moisture in the gas, and realizes that the inhaled gas is free of doped moisture. When the gas is doped with moisture, the immiscibility of water and oil is utilized to separate the water in the gas inhaled by the storage oil tank. Similarly, after the storage oil tank discharges the gas, by directly introducing the gas into the transformer oil 6 inside the oil cup 5, the separation of water in the gas is realized, and the water vapor is prevented from staying in the space above the transformer oil 6, which affects the inhalation of gas by the storage oil tank. The bottom of the oil cup 5 stores transformer oil 6. A pipeline 7 is provided inside the oil cup 5. One end of the pipeline 7 is connected to the storage oil tank, and the other end of the pipeline 7 extends into the transformer oil 6. The pipeline 7 serves as the flow-through pipeline for the inhalation and exhalation of the gas in the storage oil tank; an installation cover 11 is provided below the protective cover 3. The installation cover 11 is connected to the protective cover 3. A desiccant 12 is provided inside the installation cover 11. The interior of the installation cover 11 is communicated with the cavity 4. When inhaling the gas, by arranging the desiccant 12 inside the installation cover 11, the desiccant 12 can absorb a certain amount of moisture and at the same time adsorb the impurity particles contained in the gas, preventing impurities from being inhaled into the storage oil tank; a heating control box 14 is provided on one side of the desiccant 12. The heating control box 14 is fixedly installed with the installation cover 11. The heating control box 14 is used to detect the temperature and humidity inside the cavity 4. By detecting the temperature and humidity inside the cavity 4, the temperature inside the storage oil tank is indirectly judged.

[0022] Please refer to Figure 1 、 3As shown, an upper oil cup base 1 is provided at the top of the protective cover 3. The upper oil cup base 1 is fixedly connected to the protective cover 3. An installation base 8 is fixedly provided on the upper oil cup base 1. The pipeline 7 passes through the installation base 8 and the upper oil cup base 1 and is connected to the storage oil tank. The upper oil cup base 1 is fixedly connected to the installation base 8. The installation base 8 is detachably installed on the storage oil tank through bolts, so that one end of the pipeline 7 is communicated with the inside of the storage oil tank, and the other end of the pipeline 7 passes through the upper oil cup base 1 and the installation base 8 and extends into the transformer oil 6 stored in the oil cup 5, so that the gas inhaled or discharged by the pipeline 7 flows through the transformer oil 6 for moisture separation.

[0023] Please refer to Figure 1 、 3 As shown, an oil cup lower base 2 is provided at one end of the protective cover 3 away from the upper oil cup base 1. A through hole 17 is opened on the oil cup lower base 2. The through hole 17 penetrates the oil cup lower base 2. The oil cup lower base 2 is fixedly connected to the protective cover 3. The oil cup lower base 2 is communicated with the cavity 4 by means of the through hole 17.

[0024] Please refer to Figure 3 As shown, a moisture absorber top base 9 is provided on one side of the oil cup lower base 2. One end of the moisture absorber top base 9 is fixedly connected to the oil cup lower base 2, and the other end is fixedly connected to the installation cover 11. The moisture absorber top base 9 is in a hollow shape. The cavity 4 is communicated with the inside of the installation cover 11 through the through hole 17 and the moisture absorber top base 9. When inhaling gas, since one end of the moisture absorber top base 9 is communicated with the inside of the installation cover 11 and the other end is communicated with the oil cup lower base 2, and the oil cup lower base 2 is communicated with the cavity 4 through the through hole 17, when a suction force is formed in the cavity 4, the gas in the installation cover 11 is extracted, so that it sequentially passes through the moisture absorber top base 9, the oil cup lower base 2, and the through hole 17, and then is extracted into the cavity 4. Since ventilation holes 15 are provided on the peripheral surface of the oil cup 5, under the suction force of the pipeline 7, the gas in the cavity 4 is sucked. The sucked air enters the transformer oil 6 through the ventilation holes 15. Among them, under the suction force of the pipeline 7, a passage is formed in the transformer oil 6 for the gas in the oil cup 5, and the gas flows out through the pipeline 7 along the passage. Due to the diameter and height settings of the pipeline 7, the fluid in the transformer oil 6 cannot be pumped out through the pipeline 7, so that the air extracted in the installation cover 11 is finally pumped into the storage oil tank through the gas-water separation of the transformer oil 6. Among them, since a desiccant 12 is provided in the installation cover 11 at the front end of the oil cup 5, even if the desiccant 12 is used for a long time and becomes damp to reach the preset relative humidity value, the gas not dried by the desiccant 12 can utilize the immiscibility of oil and water to separate moisture, so as to avoid moisture entering the storage oil tank and avoid the timely maintenance of the desiccant 12.

[0025] Please refer to Figure 1As shown, a moisture absorber base 10 is provided at the bottom of the installation cover 11. The moisture absorber base 10 is fixedly connected to the installation cover 11, and an air inlet end 13 is formed on the moisture absorber base 10. The air inlet end 13 is communicated with the inside of the installation cover 11. The air inlet end 13 serves as the air inlet end 13 for the space inhaled by the pipeline 7 and the output end for exhausting the gas in the cavity 4.

[0026] Please refer to Figure 2 As shown, the heating control box 14 is fixedly connected to the installation cover 11 through an L-shaped mounting plate and is located on one side of the moisture absorber top seat 9. The heating control box 14 is used to detect the temperature and humidity in the cavity 4 to indirectly judge the temperature in the oil storage tank.

[0027] Please refer to Figure 2 As shown, a temperature and humidity detector 18 is provided in the heating control box 14. The detection end of the temperature and humidity detector 18 extends into the installation cover 11. The temperature and humidity detector 18 detects the temperature and humidity in the cavity 4 and visually displays them on the display panel of the heating control box 14. The detection of temperature realizes the comprehensive analysis and judgment of the humidity in the oil storage tank, automatic control of heating, and automatic dehumidification to restore the regeneration function of the desiccant 12. Its detection of humidity has multiple protection functions such as self-check warning, fault alarm, and remote signal transmission.

[0028] Please refer to Figure 1 As shown, ventilation holes 15 are provided on the peripheral surface of the oil cup 5. The inside of the oil cup 5 is communicated with the cavity 4 through the ventilation holes 15, and the ventilation holes 15 realize the gas communication between the inside and outside of the oil cup 5.

[0029] The working principle of the present utility model:

[0030] The moisture absorber is fixedly installed on the oil storage tank through the mounting seat 8, and one end of the pipeline 7 is communicated with the inside of the oil storage tank;

[0031] When the temperature inside the oil storage tank rises: the oil liquid in the oil storage tank expands due to heat, and the gas in the oil storage tank is squeezed out and discharged into the transformer oil 6 through the pipeline 7. When the gas comes into contact with the transformer oil 6, due to the immiscibility between oil and water, the moisture in the gas is separated from the gas. The gas sequentially passes through the ventilation holes 15, the cavity 4, the lower base 2 of the oil cup, the moisture absorber top seat 9, and the installation cover 11, and finally is discharged through the air inlet end 13.

[0032] When the temperature in the storage oil tank decreases: as the oil temperature drops, the oil in the storage oil tank cools and contracts, and gas is inhaled into the storage oil tank. Gas is inhaled into the cavity 4 through the pipeline 7. Among them, the intake end 13 inhales external gas, sucking the external gas into the mounting cover 11. The desiccant 12 is used to filter and remove impurity particles and moisture in the gas. After filtering the moisture and particulate matter in the gas, it flows into the cavity 4 through the top seat 9 of the moisture absorber. Under the action of the suction force of the pipeline 7 in the cavity 4, a passage is formed for the gas in the transformer oil 6 through the vent hole 15, enabling the gas to flow through the transformer oil 6 and then be transported to the storage oil tank through the pipeline 7. Among them, when the desiccant 12 is used for a long time and becomes damp, reaching the preset relative humidity value and affecting its moisture absorption ability, the gas introduced into the cavity 4 contains moisture. By flowing the gas through the transformer oil 6 and utilizing the immiscible characteristics of oil and water, the separation of gas and moisture is achieved, preventing moisture from entering the storage oil tank through the pipeline 7. By arranging the oil cup 5 above the desiccant 12, it is possible to avoid the need for timely replacement of the desiccant 12 after it is severely damp.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] The above content is only an example and description of the structure of the present utility model. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the structure of the utility model or exceed the scope defined by the claims of this application, it shall fall within the protection scope of the present utility model.

Claims

1. A maintenance-free moisture absorber with an oil cup at the upper part, characterized in that: It includes a protective cover (3), a cavity (4) is formed inside the protective cover (3), an oil cup (5) is provided inside the cavity (4), transformer oil (6) is stored at the bottom of the oil cup (5), a pipeline (7) is provided inside the oil cup (5), one end of the pipeline (7) is connected to an oil storage tank, and the other end of the pipeline (7) extends into the transformer oil (6); a mounting cover (11) is provided below the protective cover (3), the mounting cover (11) is connected to the protective cover (3), a desiccant (12) is provided inside the mounting cover (11), and the interior of the mounting cover (11) is communicated with the cavity (4); a heating control box (14) is provided on one side of the desiccant (12), and the heating control box (14) is fixedly installed on the mounting cover (11).

2. The maintenance-free moisture absorber with an upper oil cup according to claim 1, characterized in that: An upper oil cup seat (1) is provided at the top of the protective cover (3), the upper oil cup seat (1) is fixedly connected to the protective cover (3), a mounting seat (8) is fixedly provided on the upper oil cup seat (1), and the pipeline (7) passes through the mounting seat (8) and the upper oil cup seat (1) and is connected to the oil storage tank.

3. The non-maintenance moisture absorber with an upper oil cup according to claim 2, characterized in that: One end of the protective cover (3) away from the upper oil cup seat (1) is provided with a lower oil cup base (2), and a through hole (17) is opened on the lower oil cup base (2), and the through hole (17) penetrates through the lower oil cup base (2).

4. The non-maintenance moisture absorber with an upper oil cup according to claim 3, characterized in that: A moisture absorber top seat (9) is provided on one side of the lower oil cup base (2), one end of the moisture absorber top seat (9) is fixedly connected to the lower oil cup base (2), and the other end is fixedly connected to the mounting cover (11). The moisture absorber top seat (9) is in a hollow shape, and the cavity (4) is communicated with the interior of the mounting cover (11) through the through hole (17) and the moisture absorber top seat (9).

5. The non-maintenance moisture absorber with an upper oil cup according to claim 1, characterized in that: A moisture absorber base (10) is provided at the bottom of the mounting cover (11), the moisture absorber base (10) is fixedly connected to the mounting cover (11), and an air inlet end (13) is formed on the moisture absorber base (10), and the air inlet end (13) is communicated with the interior of the mounting cover (11).

6. The maintenance-free moisture absorber with an upper oil cup according to claim 4, characterized in that: The heating control box (14) is fixedly connected to the mounting cover (11) through an L-shaped mounting plate and is located on one side of the moisture absorber top seat (9).

7. The maintenance-free moisture absorber with an upper oil cup according to claim 1, characterized in that: A temperature and humidity detector (18) is provided inside the heating control box (14), and the detection end of the temperature and humidity detector (18) extends into the mounting cover (11).

8. A maintenance-free moisture absorber with an oil cup at the upper part according to claim 7, characterized in that: Vent holes (15) are provided on the peripheral surface of the oil cup (5), and the interior of the oil cup (5) is communicated with the cavity (4) through the vent holes (15).

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