Transformer respirator

Abstract

The transformer respirator comprises an upper fixing disc, a lower fixing disc, a containing tank and an oil cup, a feeding port is formed in the upper fixing disc, a first plug is detachably arranged on the feeding port, a discharging port is formed in the lower fixing disc, a second plug is detachably arranged on the discharging port, and the containing tank is a transparent cylinder with openings formed in the upper end and the lower end; an upper end opening of the containing tank is connected with the upper fixing disc and suitable for being communicated with an oil conservator of the transformer, a lower end opening of the containing tank is connected with the lower fixing disc, and the oil cup is connected with the lower fixing disc and communicated with the containing tank and external atmosphere. The containing tank is provided with a containing cavity suitable for containing silica gel, the feeding port communicates with the containing cavity, and the discharging port communicates with the containing cavity. The feeding port and the discharging port are formed in the upper end and the lower end of the transformer respirator, silica gel can be fed from the position of the feeding port and discharged from the position of the discharging port, the whole transformer respirator does not need to be disassembled when the silica gel is replaced, the silica gel replacement convenience is improved, and the risk that the transformer respirator is damaged is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of transformers, and in particular, to a transformer breather. Background Art

[0002] The transformer breather is an important component of the transformer conservator, and is installed at the end of the pipeline connecting the conservator to the air. This breather is a glass container filled with moisture absorbent materials such as discolored silica gel. The transformer exhales or inhales air through the breather to form a normal breathing function. The silica gel in the breather can isolate the direct contact between the conservator and the air, absorb the unfiltered moisture, and ensure the dryness of the air in the conservator. As a consumable, the discolored silica gel needs to be replaced from time to time. In the prior art, generally, the discolored silica gel in the device is replaced by removing the entire transformer breather, which has the problems of cumbersome replacement process and inconvenient replacement of the discolored silica gel. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a transformer breather to at least partially solve the technical problems existing in the related art.

[0004] To achieve the above purpose, the present application provides a transformer breather, including:

[0005] An upper fixing plate, on which a feeding port is provided, and a first plug is detachably provided on the feeding port;

[0006] A lower fixing plate, on which a discharging port is provided, and a second plug is detachably provided on the discharging port;

[0007] A receiving tank, which is a transparent cylinder with openings at both the upper and lower ends. The upper opening of the receiving tank is connected to the upper fixing plate and is adapted to communicate with the conservator of the transformer, and the lower opening of the receiving tank is connected to the lower fixing plate; and

[0008] An oil cup, which is connected to the lower fixing plate, and the oil cup communicates the receiving tank with the external atmosphere;

[0009] Wherein, the receiving tank has a receiving cavity adapted to receive silica gel, the feeding port communicates with the receiving cavity, and the discharging port communicates with the receiving cavity.

[0010] Optionally, the transformer breather further includes a fixing rod, which sequentially connects the upper fixing plate, the lower fixing plate and the oil cup.

[0011] Optionally, the oil cup includes an inner oil cup and an outer oil cup;

[0012] The outer oil cup is connected to the connecting part located on the lower fixing plate;

[0013] The inner oil cup is connected to the fixed pull rod;

[0014] A first air hole is provided on the connecting portion, and the first air hole communicates the outer oil cup with the external atmosphere;

[0015] A second air hole is provided at the bottom of the inner oil cup, and the second air hole communicates the outer oil cup and the accommodating cavity.

[0016] Optionally, the transformer breather further includes a first material guiding plate, and the first material guiding plate is installed on the upper fixed disk;

[0017] A material passing cavity is formed between the first material guiding plate and the upper fixed disk, and the material passing cavity communicates with the feed port;

[0018] A material passing hole is provided on the first material guiding plate, and the material passing hole is arranged at the lowest position in the height direction of the first material guiding plate. The fixed pull rod passes through the material passing hole, and the gap formed between the fixed pull rod and the material passing hole is used for the silica gel to pass through.

[0019] Optionally, the material passing hole is arranged at the central position of the first material guiding plate, the first material guiding plate is arranged around the fixed pull rod, and the fixed pull rod passes through the central position of the material passing hole.

[0020] Optionally, a fourth air hole is provided on the first material guiding plate, and the fourth air hole communicates the material passing cavity with the accommodating cavity.

[0021] Optionally, the transformer breather further includes a second material guiding plate and a material guiding pipe. The second material guiding plate and the material guiding pipe are both installed on the lower fixed disk,

[0022] An opening is provided on the second material guiding plate, and the opening is arranged at the lowest position in the height direction of the second material guiding plate. The opening communicates with one end of the material guiding pipe, and the other end of the material guiding pipe is connected to the discharge port. The discharge port is lower than the opening in the height direction;

[0023] The fixed pull rod passes through the second material guiding plate.

[0024] Optionally, a third air hole is provided on the second material guiding plate, and the third air hole communicates the oil cup with the accommodating cavity.

[0025] Optionally, the transformer breather is provided with a filter screen, and the filter screen is arranged on the side of the second material guiding plate facing the accommodating cavity.

[0026] Optionally, a first sealing member is provided at the connection between the first plug and the feed port, and a second sealing member is provided at the connection between the second plug and the discharge port.

[0027] Through the above technical solution, by providing a feed inlet and a discharge outlet at the upper and lower ends of the transformer breather respectively, silica gel can be fed in from the position of the feed inlet and discharged from the position of the discharge outlet. Therefore, when replacing the silica gel, it is not necessary to disassemble the entire transformer breather, which improves the convenience of silica gel replacement and reduces the risk of damage to the transformer breather.

[0028] Other features and advantages of the present disclosure will be described in detail in the following detailed implementation section. Brief Description of the Drawings

[0029] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0030] Figure 1 is a front view schematic diagram of a transformer breather provided by an exemplary embodiment of the present disclosure;

[0031] Figure 2 is a three-dimensional schematic diagram of an upper fixing plate provided by an exemplary embodiment of the present disclosure, in which a connecting member is shown;

[0032] Figure 3 is a three-dimensional schematic diagram of a lower fixing plate provided by an exemplary embodiment of the present disclosure;

[0033] Figure 4 is a three-dimensional schematic diagram of a first material guiding plate provided by an exemplary embodiment of the present disclosure.

[0034] Description of the Reference Numerals

[0035] 100, transformer breather; 10, upper fixing plate; 11, feed inlet; 12, first plug; 13, first seal; 20, lower fixing plate; 21, discharge outlet; 22, second plug; 23, second seal; 24, connecting part; 241, first air hole; 30, receiving tank; 31, receiving cavity; 40, oil cup; 41, inner oil cup; 411, second air hole; 42, outer oil cup; 50, fixing pull rod; 60, first material guiding plate; 61, material passing cavity; 62, material passing hole; 63, fourth air hole; 70, second material guiding plate; 71, opening; 72, third air hole; 80, material guiding pipe; 90, connecting member. Detailed Implementation

[0036] The following will describe the detailed implementation of the present disclosure in conjunction with the drawings. It should be understood that the detailed implementation described herein is only used to illustrate and explain the present disclosure and does not limit the present disclosure.

[0037] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top", "bottom", etc. is defined based on the drawing direction shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present disclosure.

[0038] In the present disclosure, it should be noted that terms such as "first", "second", etc. are used to distinguish one element from another, and do not have sequentiality and importance. Additionally, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

[0039] In the description of the present disclosure, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "connected", "linked", "installed" 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0040] The principle of the transformer breather is that when the transformer oil temperature rises, the oil in the oil tank expands due to heat, causing the oil level in the conservator to rise. At this time, the gas in the conservator is exhaled through the breather; when the transformer oil temperature drops, the oil in the oil tank contracts, and the oil level in the conservator also drops correspondingly. At this time, the conservator inhales gas through the breather. The transformer exhales or inhales air through the breather to form a normal breathing function and maintain the pressure balance of the transformer oil tank. At the same time, the silica gel in the breather can isolate the direct contact between the conservator and the air, absorb the moisture that has not been filtered out, prevent the transformer oil in the transformer from being invaded by the moisture in the external air, keep its moisture content always within the standard, ensure the air in the conservator is dry, and avoid the transformer oil from getting damp. However, the discolored silica gel is a consumable and needs to be replaced from time to time. Currently, for traditional transformer breather devices, generally the entire device needs to be removed, and then the discolored silica gel in the device is poured out for refilling and replacement.

[0041] This method of replacing the discoloring silica gel is cumbersome and has the following drawbacks: it is inconvenient to replace the discoloring silica gel. The traditional flange fixing method is cumbersome and heavy to operate. It is estimated that the average time for two skilled operation and maintenance personnel to replace the discoloring silica gel of a transformer is not less than 90 minutes; it causes waste of silica gel. The traditional replacement process requires pouring out all the discolored old silica gel and then refilling new silica gel, resulting in waste of some non-discolored silica gel; the replacement process is prone to damage. The traditional replacement operation method requires completely disassembling and restoring the transformer breather, and it is easy to damage glass accessories such as the breather outer cover and oil cup due to knocking or cracking caused by uneven stress on the pull rod; it is easy to generate secondary hidden dangers. The traditional process of replacing and completely disassembling and restoring the transformer breather may, during the process of replacing the breather, directly introduce air into the transformer pipeline or cause the inside of the breather to be contaminated by moisture due to inadequate protection and cleaning, increasing the risk of moisture absorption and oxidation of the transformer oil.

[0042] In view of this, as Figures 1 to 4 shown, the present application provides a transformer breather 100, including: an upper fixing plate 10, a lower fixing plate 20, a receiving tank 30 and an oil cup 40. An inlet 11 is provided on the upper fixing plate 10, and a first plug 12 is detachably provided on the inlet 11. An outlet 21 is provided on the lower fixing plate 20, and a second plug 22 is detachably provided on the outlet 21. The receiving tank 30 is a transparent cylinder with openings provided at both the upper end and the lower end. The upper opening of the receiving tank 30 is connected to the upper fixing plate 10 and is adapted to communicate with the oil conservator of the transformer. The lower opening of the receiving tank 30 is connected to the lower fixing plate 20. The oil cup 40 is connected to the lower fixing plate 20, and the oil cup 40 communicates the receiving tank 30 with the external atmosphere. Among them, the receiving tank 30 has a receiving cavity 31 adapted to receive silica gel, the inlet 11 communicates with the receiving cavity 31, and the outlet 21 communicates with the receiving cavity 31.

[0043] By providing an inlet 11 and an outlet 21 at the upper end and the lower end of the transformer breather 100 respectively, silica gel can be fed in from the position of the inlet 11 and discharged from the position of the outlet 21. Therefore, when replacing the silica gel, it is not necessary to disassemble the entire transformer breather 100, which improves the convenience of silica gel replacement and reduces the risk of damage to the transformer breather 100.

[0044] In the present disclosure, the first plug 12 is detachably installed at the feed port 11, and the second plug 22 is detachably installed at the discharge port 21. When the silica gel needs to be discharged, the second plug 22 is removed, that is, the discharge port 21 is opened, so that the silica gel is discharged from the discharge port 21. After the silica gel feeding is completed, the first plug 12 is installed to the discharge port 21, that is, the discharge port 21 is closed. When feeding is required, the first plug 12 is removed, that is, the feed port 11 is opened, so that the silica gel is fed from the feed port 11. After the silica gel feeding is completed, the first plug 12 is installed to the feed port 11, that is, the feed port 11 is closed, thereby completing the replacement of the silica gel. In this way, the replacement of the silica gel can be convenient, and the silica gel can be replaced without removing the transformer respirator 100, and the air will not directly enter the transformer pipeline or the inside of the transformer respirator 100 will not be polluted by moisture, which reduces the risk of moisture and oxidation of the transformer oil, and prevents the damage to the transformer respirator 100 caused by disassembly.

[0045] In actual applications, the silicone on the side close to the oil cup 40 will change color before the silicone in other positions. Since the second plug 22 in the present application can be installed or removed at any time, the partially discolored silicone can be taken out at the discharge port 21, and the undiscolored silicone can be left in the containing tank 30. There is no need to pour out all the discolored old silicone and then refill it with new silicone, which can prevent the waste of silicone.

[0046] In the present disclosure, silica gel refers to color-changing silica gel. Color-changing silica gel is an indicator-type adsorbent with high added value and high technical content, which is made from fine-porous silica gel with high active adsorption material as the basic raw material through deep processing. Generally, cobalt chloride is added to the color-changing silica gel. Cobalt chloride has the property of changing from blue to pink due to water absorption. It is blue before being damp and turns pink after absorbing water, which makes it easy to observe whether the silica gel absorbs water, so as to judge whether the silica gel should be replaced.

[0047] In the present disclosure, the upper fixing plate 10 can be connected to the transformer via a connecting member 90, such as Figure 2 As shown, a vent hole is provided on the connecting member 90, and the vent hole can connect the accommodating cavity 31 with the inside of the oil conservator of the transformer.

[0048] In the present disclosure, the containing tank 30 and the oil cup 40 can be made of glass or other emerging composite materials such as transparent glass fiber, organic glass, etc.

[0049] In this disclosure, Figure 1 As shown, the transformer breather 100 may further include a fixing rod 50, which sequentially connects the upper fixing plate 10, the lower fixing plate 20 and the oil cup 40. The fixing rod 50 may bring the upper fixing plate 10, the lower fixing plate 20 and the oil cup 40 closer to each other, thereby strengthening the seal between the three, and thus preventing the transformer breather 100 from leaking.

[0050] In the present disclosure, as Figure 1 shown, the oil cup 40 may include an inner oil cup 41 and an outer oil cup 42. The outer oil cup 42 is connected to the connecting portion 24 located on the lower fixing plate 20, and the inner oil cup 41 is connected to the fixing pull rod 50. A first air hole 241 is provided on the connecting portion 24, and the first air hole 241 communicates the outer oil cup 42 with the external atmosphere. A second air hole 411 is provided at the bottom of the inner oil cup 41, and the second air hole 411 communicates the outer oil cup 42 and the accommodating cavity 31. The function of the oil cup 40 is to isolate the air in the atmosphere and prevent it from directly entering the accommodating cavity 31.

[0051] Among them, the working principle of the oil cup 40 is that when inhaling, when the external temperature drops, the oil in the transformer oil cup 40 is sucked into the inner oil cup 41, and the oil level drops. When the oil level in the outer oil cup 42 is flush with the oil level at the bottom of the inner oil cup 41, if the transformer oil further shrinks, it will cause the oil sealing surface between the outer oil cup 42 and the inner oil cup 41 to be damaged, and the air entering from the first air hole 241 will enter the accommodating cavity 31 through the second air hole 411 on the inner oil cup 41, and then enter the oil conservator after being dried by the silica gel, that is, the transformer breather 100 is inhaling; when exhaling, the air presses the oil in the inner oil cup 41 to a position flush with the bottom of the inner oil cup 41 through pressure, the oil level in the outer oil cup 42 rises, and when the pressure is slightly greater, the air passes through the damaged oil sealing surface and is discharged to the outside of the silica gel tank through the first air hole 241, that is, the transformer breather 100 is exhaling. And the oil in the oil cup 40 can also filter the dust in the air.

[0052] In the present disclosure, as Figure 1 and Figure 4 shown, the transformer breather 100 may further include a first material guiding plate 60. The first material guiding plate 60 is installed on the upper fixing plate 10. A material passing cavity 61 is formed between the first material guiding plate 60 and the upper fixing plate 10, and the material passing cavity 61 communicates with the feeding port 11. A material passing hole 62 is provided on the first material guiding plate 60, and the material passing hole 62 is provided at the lowest position along the height direction of the first material guiding plate 60. The fixing pull rod 50 passes through the material passing hole 62, and the gap formed between the fixing pull rod 50 and the material passing hole 62 is used for the silica gel to pass through. The function of setting the first material guiding plate 60 is to facilitate the feeding of the silica gel. The function of the material passing cavity 61 is to gather the silica gel, so that the fed silica gel can uniformly enter the accommodating cavity 31 through the material passing hole 62 and will not enter along the side wall. The first material guiding plate 60 also has a buffering effect when the silica gel falls into the accommodating tank 30.

[0053] In the present disclosure, as Figure 1 and Figure 4As shown, the material passing hole 62 can be arranged at the central position of the first material guiding plate 60. The first material guiding plate 60 is arranged around the fixed pull rod 50, and the fixed pull rod 50 passes through the central position of the material passing hole 62. With such an arrangement, the silica gel can enter the accommodation cavity 31 through the middle position of the first material guiding plate 60, and thus the silica gel can be evenly distributed after entering the accommodation cavity 31.

[0054] In the present disclosure, as Figure 4 shown, a fourth air hole 63 can be arranged on the first material guiding plate 60, and the fourth air hole 63 connects the material passing cavity 61 and the accommodation cavity 31. The function of the fourth air hole 63 is to prevent the first material guiding plate 60 from blocking the air communication between the accommodation cavity 31 and the oil conservator.

[0055] In the present disclosure, as Figure 1 and 3 shown, the transformer breather 100 can further include a second material guiding plate 70 and a material guiding pipe 80. Both the second material guiding plate 70 and the material guiding pipe 80 are installed on the lower fixed plate 20. An opening 71 is arranged on the second material guiding plate 70. The opening 71 is arranged at the lowest position of the second material guiding plate 70 in the height direction. The opening communicates with one end of the material guiding pipe 80, and the other end of the material guiding pipe 80 is connected to the discharge port 21. The discharge port 21 is lower than the opening 71 in the height direction. The fixed pull rod 50 passes through the second material guiding plate 70. With such an arrangement, it is convenient for the silica gel to be discharged by gravity. The second material guiding plate 70 can gather the silica gel at the lower part in the accommodation cavity 31, and thus discharge it through the material guiding pipe 80.

[0056] In some embodiments, a fifth air hole is arranged on the material guiding pipe 80, which can ensure that the air in the material guiding pipe 80 is not blocked from the oil cup 40 and the accommodation cavity 31, and guarantee the air circulation.

[0057] In the present disclosure, as Figure 3 shown, a third air hole 72 can be arranged on the second material guiding plate 70. The third air hole 72 communicates the oil cup 40 and the accommodation cavity 31. With such an arrangement, the function of the third air hole 72 is to prevent the second material guiding plate 70 from blocking the air communication between the accommodation cavity 31 and the oil cup 40.

[0058] In the present disclosure, the transformer breather 100 can be provided with a filter screen, and the filter screen is arranged on the side of the second material guiding plate 70 facing the accommodation cavity 31. With such an arrangement, the filter screen can filter some impurities and prevent the silica gel from falling.

[0059] In the present disclosure, as Figure 2 and 3 shown, in order to ensure the sealing performance of the accommodation cavity 31, a first sealing member 13 is arranged at the connection between the first plug 12 and the feed port 11, and a second sealing member 23 is arranged at the connection between the second plug 22 and the discharge port 21.

[0060] In the present disclosure, the first plug 12 and the second plug 22 can be set as countersunk bolts, and the feed inlet 11 and the discharge outlet 21 can be provided with corresponding threaded holes according to the first plug 12 and the second plug 22 for the first plug 12 and the second plug 22 to be locked and connected. And the first seal 13 and the second seal 23 can be set as sealing rings, and the countersunk bolts can be detachably connected to the feed inlet 11 and the discharge outlet 21 through the sealing rings to ensure the sealing of the storage tank 30 and at the same time facilitate the disassembly of the first plug 12 and the second plug 22.

[0061] Among them, the first plug 12 and the second plug 22 can also be set as locking parts such as hexagon bolts that are convenient for locking.

[0062] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0063] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. The present disclosure will not explain the various possible combination methods separately.

[0064] In addition, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A transformer respirator, characterized in that: include: An upper fixed plate, wherein the upper fixed plate is provided with a feed port, and a first plug is detachably provided on the feed port; A lower fixed plate, wherein the lower fixed plate is provided with a discharge port, and a second plug is detachably provided on the discharge port; A containing tank, which is a transparent cylinder with openings at both the upper and lower ends, wherein the upper opening of the containing tank is connected to the upper fixing plate and is suitable for being connected to the oil pillow of the transformer, and the lower opening of the containing tank is connected to the lower fixing plate; and An oil cup, the oil cup being connected to the lower fixed plate and communicating with the containing tank and the external atmosphere; Wherein, the containing tank has a containing cavity suitable for containing silica gel, the feed port is connected to the containing cavity, and the discharge port is connected to the containing cavity.

2. The transformer respirator according to claim 1, characterized in that: The transformer breather also includes a fixing rod, which sequentially connects the upper fixing plate, the lower fixing plate and the oil cup.

3. The transformer respirator according to claim 2, characterized in that: The oil cup includes an inner oil cup and an outer oil cup; The outer oil cup is connected to the connecting portion located on the lower fixed plate; The inner oil cup is connected to the fixed pull rod; The connecting portion is provided with a first air hole, the first air hole communicating the outer oil cup with the external atmosphere; A second air hole is provided at the bottom of the inner oil cup, and the second air hole communicates with the outer oil cup and the accommodating cavity.

4. The transformer respirator according to claim 2, characterized in that: The transformer respirator further comprises a first material guide plate, which is mounted on the upper fixing plate; A material passage cavity is formed between the first material guide plate and the upper fixed plate, and the material passage cavity is connected to the material feed port; The first material guide plate is provided with a feeding hole, the feeding hole is provided at the lowest position in the height direction of the first material guide plate, the fixed pull rod is passed through the feeding hole, and the gap formed between the fixed pull rod and the feeding hole is used for silica gel to pass through.

5. The transformer respirator according to claim 4, characterized in that: The material passing hole is arranged at the center position of the first material guide plate, the first material guide plate is arranged around the fixed pull rod, and the fixed pull rod is penetrated at the center position of the material passing hole.

6. The transformer respirator according to claim 4, characterized in that: The first material guide plate is provided with a fourth air hole, and the fourth air hole is connected with the material transfer cavity and the accommodating cavity.

7. The transformer respirator according to claim 2, characterized in that: The transformer respirator further comprises a second material guide plate and a material guide pipe, wherein the second material guide plate and the material guide pipe are both mounted on the lower fixed plate. The second material guide plate is provided with an opening, the opening is provided at the lowest position in the height direction of the second material guide plate, the opening is connected to one end of the material guide pipe, the other end of the material guide pipe is connected to the material outlet, and the material outlet is lower than the opening in the height direction; The fixed pull rod is penetrated through the second material guide plate.

8. The transformer respirator according to claim 7, characterized in that: The second material guide plate is provided with a third air hole, and the third air hole is connected with the oil cup and the accommodating cavity.

9. The transformer respirator according to claim 7, characterized in that: The transformer respirator is provided with a filter screen, and the filter screen is arranged on a side of the second material guide plate facing the accommodating cavity.

10. The transformer respirator according to any one of claims 1 to 9, characterized in that: A first sealing member is provided at a connection between the first plug and the feed port, and a second sealing member is provided at a connection between the second plug and the discharge port.

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