A transformer respirator

Abstract

The invention discloses a transformer breather, which relates to the technical field of electric power equipment. The invention comprises a dryer, a transformer breathing structure and a two-position four-way reversing valve which are connected and conducted in sequence, and also comprises an oil pillow connecting pipe and an air connecting pipe which are arranged on the two-position four-way reversing valve. The number of the transformer breathing structures is two, which are a first transformer breathing structure and a second transformer breathing structure which are identical in structure. The first transformer breathing structure is conducted with the oil pillow connecting pipe through the two-position four-way reversing valve, and the dryer is conducted with the air connecting pipe through the second transformer breathing structure and the two-position four-way reversing valve, or the second transformer breathing structure is conducted with the oil pillow connecting pipe through the two-position four-way reversing valve, and the dryer is conducted with the air connecting pipe through the first transformer breathing structure and the two-position four-way reversing valve. The dryer, the transformer breathing structure, the two-position four-way reversing valve, the oil pillow connecting pipe and the air connecting pipe are used to prevent the insulating oil of the transformer from being easily affected by moisture and oxidation.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a transformer respirator. Background Art

[0002] The transformer respirator is an intermediate device that connects the transformer insulating oil and the outside air. Its purpose is to filter out impurities and moisture in the air. In a humid environment, due to the high moisture content, the color-changing silica gel in the drying chamber of the transformer respirator is easy to change color. If it is not discovered in time, too much moisture will enter the transformer, which will easily cause the transformer's insulating oil to become damp and oxidized, affecting the stable operation of the transformer. Frequent replacement of the respirator will also cause too much moisture to enter the transformer when disassembling and assembling the respirator.

[0003] Existing technical problems and considerations:

[0004] How to solve the technical problem that the insulating oil of the transformer is easily affected by moisture and oxidation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a transformer breather, which realizes that the insulating oil of the transformer is not easily affected by moisture and oxidation through a dryer, a transformer breathing structure, a two-position four-way reversing valve, an oil pillow connecting pipe and an air connecting pipe.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a transformer breather includes a dryer, a transformer breathing structure and a two-position four-way reversing valve which are connected and conducted in sequence, and also includes an oil pillow connecting pipe arranged on the two-position four-way reversing valve for connecting and conducting with the oil pillow and an air connecting pipe for connecting and conducting with the external air. The transformer breathing structure includes two transformer breathing structures with the same structure, namely a first transformer breathing structure and a second transformer breathing structure; the first transformer breathing structure is connected to the oil pillow connecting pipe through the two-position four-way reversing valve, and the dryer is connected to the air connecting pipe through the second transformer breathing structure and the two-position four-way reversing valve, or the second transformer breathing structure is connected to the oil pillow connecting pipe through the two-position four-way reversing valve, and the dryer is connected to the air connecting pipe through the first transformer breathing structure and the two-position four-way reversing valve.

[0007] A further technical solution is that: the first transformer breathing structure includes a first transformer breather, a first connecting pipe, a first drying pipe and a first drying valve arranged on the first drying pipe, the first transformer breather includes a first drying chamber, a first conduit and a first oil cup connected in sequence and a first conduit valve arranged on the first conduit, the first drying valve is a valve used to connect or cut off the first drying pipe, the first conduit valve is a valve used to connect or cut off the first conduit, the first drying chamber is connected and connected to the two-position four-way reversing valve through the first connecting pipe, and the first drying chamber is connected and connected to the dryer through the first drying pipe; the second transformer breathing structure includes a second transformer breather, a second connecting pipe, a second drying pipe and a second drying valve arranged on the second drying pipe, the second transformer breather includes a second drying chamber, a second conduit and a second oil cup connected in sequence and a second conduit valve arranged on the second conduit.

[0008] A further technical solution is: it also includes a controller, the first drying valve, the first conduit valve, the second drying valve and the second conduit valve are all electromagnetic stop valves, the two-position four-way reversing valve is a two-position four-way electromagnetic reversing valve, the dryer is a fan, and the controller is respectively connected to and communicates with the first drying valve, the first conduit valve, the second drying valve, the second conduit valve, the two-position four-way reversing valve and the dryer.

[0009] A further technical solution is: it also includes an air connecting pipe valve arranged on the air connecting pipe, and the air connecting pipe valve is a valve used to make the first conduit conductive or cut off.

[0010] A further technical solution is that: the air connecting pipe valve is an electromagnetic stop valve, and the controller is connected to and communicates with the air connecting pipe valve.

[0011] A further technical solution is: it also includes a first humidity sensor arranged on the oil pillow connecting pipe for obtaining the humidity in the oil pillow connecting pipe, and the first humidity sensor is connected to and communicates with the controller.

[0012] A further technical solution is: it also includes a second humidity sensor arranged on the air connecting pipe for obtaining the humidity in the air connecting pipe, and the second humidity sensor is connected to and communicates with the controller.

[0013] A further technical solution is that it also includes a third humidity sensor for obtaining the humidity of the external air, and the third humidity sensor is connected to and communicates with the controller.

[0014] A further technical solution is that: the controller is a single chip microcomputer.

[0015] A further technical solution is that the dryer is a fan with a heater.

[0016] The beneficial effects of adopting the above technical solution are:

[0017] First, a transformer respirator includes a dryer, a transformer breathing structure and a two-position four-way reversing valve connected in sequence, and also includes an oil pillow connecting pipe arranged on the two-position four-way reversing valve for connecting and communicating with the oil pillow and an air connecting pipe for connecting and communicating with the external air. The transformer breathing structure includes two transformer breathing structures with the same structure, namely a first transformer breathing structure and a second transformer breathing structure; the first transformer breathing structure is connected to the oil pillow connecting pipe through the two-position four-way reversing valve, and the dryer is connected to the air connecting pipe through the second transformer breathing structure and the two-position four-way reversing valve, or the second transformer breathing structure is connected to the oil pillow connecting pipe through the two-position four-way reversing valve, and the dryer is connected to the air connecting pipe through the first transformer breathing structure and the two-position four-way reversing valve. This technical solution, through the dryer, the transformer breathing structure, the two-position four-way reversing valve, the oil pillow connecting pipe and the air connecting pipe, realizes that the insulating oil of the transformer is not easy to be damp or oxidized, and the two transformer breathing structures work alternately, breathe or dehumidify alternately, and ensure the stable performance of the insulating oil of the transformer.

[0018] Second, the first transformer breathing structure includes a first transformer breather, a first connecting pipe, a first drying pipe and a first drying valve arranged on the first drying pipe, the first transformer breather includes a first drying chamber, a first conduit and a first oil cup connected in sequence and a first conduit valve arranged on the first conduit, the first drying valve is a valve used to connect or cut off the first drying pipe, the first conduit valve is a valve used to connect or cut off the first conduit, the first drying chamber is connected and connected to the two-position four-way reversing valve through the first connecting pipe, and the first drying chamber is connected and connected to the dryer through the first drying pipe; the second transformer breathing structure includes a second transformer breather, a second connecting pipe, a second drying pipe and a second drying valve arranged on the second drying pipe, the second transformer breather includes a second drying chamber, a second conduit and a second oil cup connected in sequence and a second conduit valve arranged on the second conduit. This technical solution, by selectively switching the conduit valve and the drying valve, is more convenient to complete the alternating switching of the two transformer breathing structures, so that one transformer breathing structure is connected to the oil pillow connecting pipe, and the other transformer breathing structure is connected to the air connecting pipe, and the structure is more reasonable.

[0019] Third, it also includes a controller, the first drying valve, the first conduit valve, the second drying valve and the second conduit valve are all electromagnetic stop valves, the two-position four-way reversing valve is a two-position four-way electromagnetic reversing valve, the dryer is a fan, and the controller is respectively connected to and communicates with the first drying valve, the first conduit valve, the second drying valve, the second conduit valve, the two-position four-way reversing valve and the dryer. This technical solution controls the first drying valve, the first conduit valve, the second drying valve, the second conduit valve, the two-position four-way reversing valve and the dryer through the controller and completes the switching operation, which is more convenient to operate and has a more reasonable structure.

[0020] Fourthly, it also includes an air connection pipe valve arranged on the air connection pipe, and the air connection pipe valve is a valve used to connect or cut off the first conduit. This technical solution controls the connection or cutoff between the air connection pipe and the outside air through the air connection pipe valve, which is more convenient to use, more practical and more reasonable in structure.

[0021] Fifth, the air connection pipe valve is an electromagnetic stop valve, and the controller is connected and communicates with the air connection pipe valve. This technical solution controls the air connection pipe valve and completes the switching operation through the controller, which is more convenient to operate and has a more reasonable structure.

[0022] Sixth, it also includes a first humidity sensor disposed on the oil pillow connecting pipe for obtaining the humidity in the oil pillow connecting pipe, and the first humidity sensor is connected and communicates with the controller. This technical solution obtains the humidity data in the oil pillow connecting pipe through the first humidity sensor, which makes it easier for operators to understand the situation and operate accordingly, and the structure is more reasonable.

[0023] Seventh, it also includes a second humidity sensor disposed on the air connecting pipe for obtaining the humidity in the air connecting pipe, and the second humidity sensor is connected and communicates with the controller. This technical solution obtains the humidity data in the air connecting pipe through the second humidity sensor, which makes it easier for operators to understand the situation and operate accordingly, and the structure is more reasonable.

[0024] Eighth, it also includes a third humidity sensor for obtaining the external air humidity, and the third humidity sensor is connected and communicates with the controller. This technical solution obtains the external air humidity data through the third humidity sensor, which makes it easier for operators to understand the situation and operate accordingly, and the structure is more reasonable.

[0025] Ninth, the controller is a single chip microcomputer. This technical solution has a good cost performance.

[0026] Tenth, the dryer is a fan with a heater. In this technical solution, the fan with a heater blows out hot air, which has a better dehumidification effect and a more reasonable structure.

[0027] Please refer to the detailed description of the specific implementation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural diagram of Embodiment 1 of the present invention;

[0029] Figure 2 is a principle block diagram of embodiment 1 of the present invention;

[0030] Figure 3 is a structural diagram of Embodiment 2 of the present invention;

[0031] Figure 4 It is a principle block diagram of embodiment 2 of the present invention.

[0032] Wherein: 1 oil pillow connecting pipe, 2 air connecting pipe, 3-1 first drying pipe, 3-2 second drying pipe, 4-1 first drying valve, 4-2 second drying valve, 5-1 first connecting pipe, 5-2 second connecting pipe, 6-1 first drying chamber, 6-2 second drying chamber, 7-1 first conduit, 7-2 second conduit, 8-1 first oil cup, 8-2 second oil cup, 9-1 first conduit valve, 9-2 second conduit valve, 10 two-position four-way reversing valve, 11-1 first dryer, 11-2 second dryer, 12 first humidity sensor, 13 second humidity sensor, 14 air connecting pipe valve, 15 color-changing silica gel. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0035] Embodiment 1:

[0036] like Figure 1 and Figure 2As shown, the present invention discloses a transformer respirator including a controller, a dryer, a transformer respirator structure, a two-position four-way reversing valve 10, an oil conservator connecting pipe 1 fixed on the two-position four-way reversing valve 10 for connecting and communicating with the oil conservator and an air connecting pipe 2 for connecting and communicating with the external air, an air connecting pipe valve 14 fixed on the air connecting pipe 2, a first humidity sensor 12 fixed on the oil conservator connecting pipe 1 for obtaining the humidity in the oil conservator connecting pipe 1, a second humidity sensor 13 fixed on the air connecting pipe 2 for obtaining the humidity in the air connecting pipe 2, and a third humidity sensor for obtaining the humidity of the external air. The controller is a single-chip microcomputer, the dryer is a fan with a heater, and the number thereof is one, namely, a first dryer 11-1. The transformer respirator structure includes two transformer respirators with the same structure, namely, a first transformer respirator structure and a second transformer respirator structure. The air connecting pipe valve 14 is a valve for connecting or closing the air connecting pipe 2.

[0037] like Figure 1 As shown, the first transformer breathing structure includes a first transformer breathing device, a first connecting pipe 5-1, a first drying pipe 3-1 and a first drying valve 4-1 fixed on the first drying pipe 3-1. The first transformer breathing device includes a first drying chamber 6-1, a first conduit 7-1 and a first oil cup 8-1 which are connected in sequence, and a first conduit valve 9-1 fixed on the first conduit 7-1. The first drying valve 4-1 is a valve used to connect or cut off the first drying pipe 3-1. The first conduit valve 9-1 is a valve used to connect or cut off the first conduit 7-1. The first drying chamber 6-1 is connected to the two-position four-way reversing valve 10 through the first connecting pipe 5-1. The first drying chamber 6-1 is connected to the first dryer 11-1 through the first drying pipe 3-1. The second transformer breathing structure includes a second transformer breather, a second connecting pipe 5-2, a second drying pipe 3-2 and a second drying valve 4-2 fixed on the second drying pipe 3-2. The second transformer breather includes a second drying chamber 6-2, a second conduit 7-2 and a second oil cup 8-2 connected in sequence and a second conduit valve 9-2 fixed on the second conduit 7-2. The second drying valve 4-2 is a valve for connecting or closing the second drying pipe 3-2. The second conduit valve 9-2 is a valve for connecting or closing the second conduit 7-2. The second drying chamber 6-2 is connected to the two-position four-way reversing valve 10 through the second connecting pipe 5-2. The second drying chamber 6-2 is connected to the first dryer 11-1 through the second drying pipe 3-2.

[0038] The first drying valve 4-1, the second drying valve 4-2, the first conduit valve 9-1, the second conduit valve 9-2 and the air connecting pipe valve 14 are all electromagnetic stop valves, and the two-position four-way reversing valve 10 is a two-position four-way electromagnetic reversing valve.

[0039] like Figure 2 As shown, the first humidity sensor 12 is connected to the controller and communicates unidirectionally, the second humidity sensor 13 is connected to the controller and communicates unidirectionally, and the third humidity sensor is connected to the controller and communicates unidirectionally.

[0040] like Figure 2 As shown, the control end of the controller is connected to the control end of the first drying valve 4-1 and communicates unidirectionally, the control end of the controller is connected to the control end of the first conduit valve 9-1 and communicates unidirectionally, the control end of the controller is connected to the control end of the second drying valve 4-2 and communicates unidirectionally, the control end of the controller is connected to the control end of the second conduit valve 9-2 and communicates unidirectionally, the control end of the controller is connected to the control end of the air connecting pipe valve 14 and communicates unidirectionally, the control end of the controller is connected to the control end of the two-position four-way reversing valve 10 and communicates unidirectionally, and the control end of the controller is connected to the control end of the first dryer 11-1 and communicates unidirectionally.

[0041] like Figure 1 As shown, the first oil cup 8-1, the first conduit 7-1, the first drying chamber 6-1, the first connecting pipe 5-1, the two-position four-way reversing valve 10 and the oil pillow connecting pipe 1 are connected in sequence, and the first dryer 11-1, the second drying pipe 3-2, the second drying chamber 6-2, the second connecting pipe 5-2, the two-position four-way reversing valve 10 and the air connecting pipe 2 are connected in sequence, or the second oil cup 8-2, the second conduit 7-2, the second drying chamber 6-2, the second connecting pipe 5-2, the two-position four-way reversing valve 10 and the oil pillow connecting pipe 1 are connected in sequence, and the first dryer 11-1, the first drying pipe 3-1, the first drying chamber 6-1, the first connecting pipe 5-1, the two-position four-way reversing valve 10 and the air connecting pipe 2 are connected in sequence.

[0042] Among them, the controller, the dryer, the two-position four-way electromagnetic reversing valve, the electromagnetic stop valve, the transformer respirator and the humidity sensor itself and the corresponding communication connection technology are existing technologies and are not described in detail here.

[0043] Example 1 Instructions for use:

[0044] Connect the oil pillow connecting pipe 1 to the oil pillow of the transformer.

[0045] When the transformer is working normally, the first transformer respirator is in working state, and the second transformer respirator is in standby state. At this time, the first conduit valve 9-1 is in conducting state, and the first dry valve 4-1, the second dry valve 4-2 and the air connection pipe valve 14 are in cut-off state. The two-position four-way reversing valve 10 conducts the first transformer respirator to the oil pillow of the transformer, and the first transformer respirator breathes normally.

[0046] When the first humidity sensor 12 detects that the humidity in the oil pillow connecting pipe 1 exceeds 65%RH, it notifies the controller. The controller determines that the color-changing silica gel 15 of the first transformer respirator is damp. The controller notifies the two-position four-way reversing valve 10 and reverses, so that the second transformer respirator is connected to the oil pillow of the transformer through the second connecting pipe 5-2, the two-position four-way reversing valve 10 and the oil pillow connecting pipe 1, and the first drying chamber 6-1, the first connecting pipe 5-1, the two-position four-way reversing valve 10 and the air connecting pipe 2 of the first transformer respirator are connected in sequence, that is, the first transformer respirator is out of working state and enters the state to be dehumidified, and the second transformer respirator enters the working state.

[0047] When the external third humidity sensor detects that the ambient humidity is lower than 40%RH, the controller is informed. The controller informs the first drying valve 4-1, the first drying valve 4-1 opens and makes the first drying pipe 3-1 conductive. The controller informs the first conduit valve 9-1, the first conduit valve 9-1 closes and makes the first conduit 7-1 cut off. The controller informs the air connecting pipe valve 14, the air connecting pipe valve 14 opens and makes the air connecting pipe 2 conductive. The controller informs the first dryer 11-1, the first dryer 11-1 starts working and starts to dehumidify the first transformer respirator. At this time, the first drying valve 4-1 and the air connecting pipe valve 14 are in the conductive state, and the first conduit valve 9-1 is in the cut-off state. The first dryer 11-1 blows the dry hot air flow into the first drying chamber 6-1 of the first transformer respirator, and the dry hot air flow flows out from the air outlet of the air connecting pipe valve 14 through the color-changing silica gel 15. When the second humidity sensor 13 detects that the humidity of the airflow flowing out of the air connection pipe 2 is lower than 10%RH, it notifies the controller, and the controller determines that the first transformer respirator has completed dehumidification. The controller notifies the first dryer 11-1, and the first dryer 11-1 stops working. The controller notifies the first drying valve 4-1, and the first drying valve 4-1 closes and cuts off the first drying pipe 3-1. The controller notifies the first conduit valve 9-1, and the first conduit valve 9-1 opens and makes the first conduit 7-1 conductive. The controller notifies the air connection pipe valve 14, and the air connection pipe valve 14 closes and cuts off the air connection pipe 2, that is, the first drying valve 4-1 and the air connection pipe valve 14 become cut-off states, and the first conduit valve 9-1 becomes conductive. The first transformer respirator becomes a dry standby state. The dehumidification work is completed.

[0048] Embodiment 2:

[0049] Embodiment 2 is different from Embodiment 1 in that the number of dryers is two, namely a first dryer 11 - 1 and a second dryer 11 - 2 .

[0050] like Figure 3 and Figure 4As shown, the present invention discloses a transformer respirator including a controller, a dryer, a transformer respirator structure, a two-position four-way reversing valve 10, an oil conservator connecting pipe 1 fixed on the two-position four-way reversing valve 10 for connecting and communicating with the oil conservator and an air connecting pipe 2 for connecting and communicating with the external air, an air connecting pipe valve 14 fixed on the air connecting pipe 2, a first humidity sensor 12 fixed on the oil conservator connecting pipe 1 for obtaining the humidity in the oil conservator connecting pipe 1, a second humidity sensor 13 fixed on the air connecting pipe 2 for obtaining the humidity in the air connecting pipe 2, and a third humidity sensor for obtaining the humidity of the external air. The controller is a single-chip microcomputer, the dryer is a fan with a heater, and the number of the dryer is two, namely a first dryer 11-1 and a second dryer 11-2. The transformer respirator structure includes two transformer respirators with the same structure, namely a first transformer respirator structure and a second transformer respirator structure. The air connecting pipe valve 14 is a valve for connecting or closing the air connecting pipe 2.

[0051] like Figure 3 As shown, the first transformer breathing structure includes a first transformer breathing device, a first connecting pipe 5-1, a first drying pipe 3-1 and a first drying valve 4-1 fixed on the first drying pipe 3-1. The first transformer breathing device includes a first drying chamber 6-1, a first conduit 7-1 and a first oil cup 8-1 which are connected in sequence, and a first conduit valve 9-1 fixed on the first conduit 7-1. The first drying valve 4-1 is a valve used to connect or cut off the first drying pipe 3-1. The first conduit valve 9-1 is a valve used to connect or cut off the first conduit 7-1. The first drying chamber 6-1 is connected to the two-position four-way reversing valve 10 through the first connecting pipe 5-1. The first drying chamber 6-1 is connected to the first dryer 11-1 through the first drying pipe 3-1. The second transformer breathing structure includes a second transformer breather, a second connecting pipe 5-2, a second drying pipe 3-2 and a second drying valve 4-2 fixed on the second drying pipe 3-2. The second transformer breather includes a second drying chamber 6-2, a second conduit 7-2 and a second oil cup 8-2 connected in sequence and a second conduit valve 9-2 fixed on the second conduit 7-2. The second drying valve 4-2 is a valve for connecting or closing the second drying pipe 3-2. The second conduit valve 9-2 is a valve for connecting or closing the second conduit 7-2. The second drying chamber 6-2 is connected to the two-position four-way reversing valve 10 through the second connecting pipe 5-2. The second drying chamber 6-2 is connected to the second dryer 11-2 through the second drying pipe 3-2.

[0052] The first drying valve 4-1, the second drying valve 4-2, the first conduit valve 9-1, the second conduit valve 9-2 and the air connecting pipe valve 14 are all electromagnetic stop valves, and the two-position four-way reversing valve 10 is a two-position four-way electromagnetic reversing valve.

[0053] like Figure 4 As shown, the first humidity sensor 12 is connected to the controller and communicates unidirectionally, the second humidity sensor 13 is connected to the controller and communicates unidirectionally, and the third humidity sensor is connected to the controller and communicates unidirectionally.

[0054] like Figure 4 As shown, the control end of the controller is connected to the control end of the first drying valve 4-1 and communicates unidirectionally, the control end of the controller is connected to the control end of the first conduit valve 9-1 and communicates unidirectionally, the control end of the controller is connected to the control end of the second drying valve 4-2 and communicates unidirectionally, the control end of the controller is connected to the control end of the second conduit valve 9-2 and communicates unidirectionally, the control end of the controller is connected to the control end of the air connecting pipe valve 14 and communicates unidirectionally, the control end of the controller is connected to the control end of the two-position four-way reversing valve 10 and communicates unidirectionally, the control end of the controller is connected to the control end of the first dryer 11-1 and communicates unidirectionally, and the control end of the controller is connected to the control end of the second dryer 11-2 and communicates unidirectionally.

[0055] like Figure 3 As shown, the first oil cup 8-1, the first conduit 7-1, the first drying chamber 6-1, the first connecting pipe 5-1, the two-position four-way reversing valve 10 and the oil pillow connecting pipe 1 are connected in sequence, and the second dryer 11-2, the second drying pipe 3-2, the second drying chamber 6-2, the second connecting pipe 5-2, the two-position four-way reversing valve 10 and the air connecting pipe 2 are connected in sequence, or the second oil cup 8-2, the second conduit 7-2, the second drying chamber 6-2, the second connecting pipe 5-2, the two-position four-way reversing valve 10 and the oil pillow connecting pipe 1 are connected in sequence, and the first dryer 11-1, the first drying pipe 3-1, the first drying chamber 6-1, the first connecting pipe 5-1, the two-position four-way reversing valve 10 and the air connecting pipe 2 are connected in sequence.

[0056] Among them, the controller, the dryer, the two-position four-way electromagnetic reversing valve, the electromagnetic stop valve, the transformer respirator and the humidity sensor itself and the corresponding communication connection technology are existing technologies and are not described in detail here.

[0057] Example 2 Instructions for use:

[0058] Connect the oil pillow connecting pipe 1 to the oil pillow of the transformer.

[0059] When the transformer is working normally, the first transformer respirator is in working state, and the second transformer respirator is in standby state. At this time, the first conduit valve 9-1 is in conducting state, and the first dry valve 4-1, the second dry valve 4-2 and the air connection pipe valve 14 are in cut-off state. The two-position four-way reversing valve 10 conducts the first transformer respirator to the oil pillow of the transformer, and the first transformer respirator breathes normally.

[0060] When the first humidity sensor 12 detects that the humidity in the oil pillow connecting pipe 1 exceeds 65%RH, it notifies the controller. The controller determines that the color-changing silica gel 15 of the first transformer respirator is damp. The controller notifies the two-position four-way reversing valve 10 and reverses, so that the second transformer respirator is connected to the oil pillow of the transformer through the second connecting pipe 5-2, the two-position four-way reversing valve 10 and the oil pillow connecting pipe 1, and the first drying chamber 6-1, the first connecting pipe 5-1, the two-position four-way reversing valve 10 and the air connecting pipe 2 of the first transformer respirator are connected in sequence, that is, the first transformer respirator is out of working state and enters the state to be dehumidified, and the second transformer respirator enters the working state.

[0061] When the external third humidity sensor detects that the ambient humidity is lower than 40%RH, the controller is informed. The controller informs the first drying valve 4-1, the first drying valve 4-1 opens and makes the first drying pipe 3-1 conductive. The controller informs the first conduit valve 9-1, the first conduit valve 9-1 closes and makes the first conduit 7-1 cut off. The controller informs the air connecting pipe valve 14, the air connecting pipe valve 14 opens and makes the air connecting pipe 2 conductive. The controller informs the first dryer 11-1, the first dryer 11-1 starts working and starts to dehumidify the first transformer respirator. At this time, the first drying valve 4-1 and the air connecting pipe valve 14 are in the conductive state, and the first conduit valve 9-1 is in the cut-off state. The first dryer 11-1 blows the dry hot air flow into the first drying chamber 6-1 of the first transformer respirator, and the dry hot air flow flows out from the air outlet of the air connecting pipe valve 14 through the color-changing silica gel 15. When the second humidity sensor 13 detects that the humidity of the airflow flowing out of the air connection pipe 2 is lower than 10%RH, it notifies the controller, and the controller determines that the first transformer respirator has completed dehumidification. The controller notifies the first dryer 11-1, and the first dryer 11-1 stops working. The controller notifies the first drying valve 4-1, and the first drying valve 4-1 closes and cuts off the first drying pipe 3-1. The controller notifies the first conduit valve 9-1, and the first conduit valve 9-1 opens and makes the first conduit 7-1 conductive. The controller notifies the air connection pipe valve 14, and the air connection pipe valve 14 closes and cuts off the air connection pipe 2, that is, the first drying valve 4-1 and the air connection pipe valve 14 become cut-off states, and the first conduit valve 9-1 becomes conductive. The first transformer respirator becomes a dry standby state. The dehumidification work is completed.

[0062] Compared with the above embodiment, the valves may also all be manual valves, which are switched manually so that the two respirators work alternately.

[0063] Purpose of this application:

[0064] When the moisture absorption of the transformer respirator silica gel is close to saturation, it will automatically heat and dehumidify to restore the deteriorated silica gel to its original water absorption performance. No manual replacement is required, thus achieving the purpose of maintenance-free.

[0065] Technical solution description:

[0066] like Figure 1 As shown, the method consists of two respirators. A hair dryer is provided on the external connecting pipe of the respirator, and the hair dryer has a heating function. An electromagnetic stop valve is provided between the hair dryer and the respirator, and an electromagnetic stop valve is provided between the color-changing silica gel 15 part of the respirator and the oil cup. The upper parts of the two respirators are respectively connected to the transformer oil pillow and the outside through a two-position four-way electromagnetic reversing valve. An electromagnetic stop valve and a humidity sensor are provided on the connecting pipe connected to the outside of the two-position four-way electromagnetic reversing valve. A measuring point of the humidity sensor is provided in the connecting pipe between the two-position four-way electromagnetic reversing valve and the transformer oil pillow, and a humidity sensor for detecting the ambient humidity is also provided on the outside.

[0067] Working principle:

[0068] When not working, the first conduit valve 9-1 is in the on state, and the first drying valve 4-1 and the air connecting pipe valve 14 are in the off state. The two-position four-way electromagnetic reversing valve conducts the first transformer respirator to the transformer oil pillow, and the first transformer respirator breathes normally. When the first humidity sensor 12 detects that the humidity exceeds the set 65%RH, it is judged that the color-changing silica gel 15 of the first transformer respirator is damp. The two-position four-way electromagnetic reversing valve will reverse, the first transformer respirator will be out of working state, and the second transformer respirator will enter working state. The first transformer respirator enters the state to be dehumidified. When the external third humidity sensor detects that the ambient humidity is lower than 40%RH, the dehumidification work starts. At this time, the first drying valve 4-1 and the air connecting pipe valve 14 are in the on state, and the first conduit valve 9-1 is in the off state. The hair dryer works, blowing the dry hot air flow into the color-changing silica gel bottle, and the dry hot air flow flows out from the air outlet of the air connecting pipe valve 14 through the color-changing silica gel. When the second humidity sensor 13 detects that the humidity of the outflowing air flow is lower than 10%RH, it is determined that the first transformer respirator has completed dehumidification, and the hair dryer stops working. The first drying valve 4-1 and the air connecting pipe valve 14 become cut-off states, and the first conduit valve 9-1 becomes conducting state. The first transformer respirator becomes dry standby state. The dehumidification work is completed.

Claims

1. A transformer respirator, characterized in that: The invention comprises a dryer, a transformer breathing structure and a two-position four-way reversing valve which are connected and conducted in sequence, and also comprises an oil conservator connecting pipe arranged on the two-position four-way reversing valve for connecting and conducting with the oil conservator and an air connecting pipe for connecting and conducting with the external air. The transformer breathing structure comprises two transformer breathing structures with the same structure, namely a first transformer breathing structure and a second transformer breathing structure; the first transformer breathing structure is connected with the oil conservator connecting pipe through the two-position four-way reversing valve, and the dryer is connected with the air connecting pipe through the second transformer breathing structure and the two-position four-way reversing valve, or the second transformer breathing structure is connected with the oil conservator connecting pipe through the two-position four-way reversing valve, and the dryer is connected with the air connecting pipe through the first transformer The breathing structure and the two-position four-way reversing valve are connected to the air connecting pipe; the first transformer breathing structure includes a first transformer respirator, a first connecting pipe, a first drying pipe and a first drying valve arranged on the first drying pipe, the first transformer respirator includes a first drying chamber, a first conduit and a first oil cup connected in sequence and a first conduit valve arranged on the first conduit, the first drying valve is a valve used to connect or cut off the first drying pipe, the first conduit valve is a valve used to connect or cut off the first conduit, the first drying chamber is connected to the two-position four-way reversing valve through the first connecting pipe, and the first drying chamber is connected to the dryer through the first drying pipe; The second transformer breathing structure includes a second transformer breather, a second connecting pipe, a second drying pipe and a second drying valve arranged on the second drying pipe, wherein the second transformer breather includes a second drying chamber, a second conduit and a second oil cup connected in sequence and a second conduit valve arranged on the second conduit; further includes a controller, wherein the first drying valve, the first conduit valve, the second drying valve and the second conduit valve are all electromagnetic stop valves, the two-position four-way reversing valve is a two-position four-way electromagnetic reversing valve, the dryer is a fan, and the controller is respectively connected and communicated with the first drying valve, the first conduit valve, the second drying valve, the second conduit valve, the two-position four-way reversing valve and the dryer; further includes a An air connecting pipe valve is arranged on the air connecting pipe, and the air connecting pipe valve is a valve used to make the first conduit conductive or cut off; the air connecting pipe valve is an electromagnetic cut-off valve, and the controller is connected to and communicates with the air connecting pipe valve; it also includes a first humidity sensor arranged on the oil pillow connecting pipe for obtaining the humidity in the oil pillow connecting pipe, and the first humidity sensor is connected to and communicates with the controller; it also includes a second humidity sensor arranged on the air connecting pipe for obtaining the humidity in the air connecting pipe, and the second humidity sensor is connected to and communicates with the controller; it also includes a third humidity sensor for obtaining the humidity of the external air, and the third humidity sensor is connected to and communicates with the controller.

2. A transformer respirator according to claim 1, characterized in that: The controller is a single chip microcomputer.

3. A transformer respirator according to claim 1 or 2, characterized in that: The dryer is a fan with a heater.

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