JP2009200386A - Dehydrating breather and inner cylinder for dehydrating breather - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehydrating breather effectively using all silica gel in a container body without waste. <P>SOLUTION: The dehydrating breather includes a tubular inner cylinder 8 arranged almost concentrically with a vertical center of the glass cylinder 2 in a glass cylinder 2 containing silica gel 13, and the silica gel 13 is contained between the inner cylinder 8 and the glass cylinder 2. Then, all silica gel 13 contained absorbs a lot of moisture, and a moisture absorption effect of all silica gel 13 lowers (deteriorates) uniformly. As a result, all silica gel 13 can be effectively used without waste. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hygroscopic respirator (breather) for absorbing moisture in the atmosphere that flows in by the breathing action of a device such as a transformer.

  For example, there is an event in which moisture in the atmosphere enters into the vessel due to the breathing action of the transformer, and the moisture dissolves in oil to reduce the dielectric strength of the transformer. For this reason, a hygroscopic respirator for absorbing invaded moisture with a hygroscopic agent (dehydrating agent) is attached to a transformer or the like. This hygroscopic respirator is made of, for example, a transparent glass cylindrical container body arranged vertically, and a breathing tube connected to the transformer side or the like is provided above the container body. An oil bottle is provided. Further, a moisture absorbent such as silica gel is accommodated (enclosed) in the container body, and oil is accommodated in the oil bottle. Then, the atmosphere (outside air) flows in from the lower side of the container body and passes through (passes through) the oil in the oil bottle and the moisture absorbent in the container body. As a result, moisture in the atmosphere is absorbed by the hygroscopic agent and flows from the intake pipe to the transformer side or the like. On the other hand, the exhaust from the transformer side or the like flows from the intake pipe, passes through the container body and the oil tank, and is discharged into the atmosphere (for example, see Patent Document 1).

Further, such a hygroscopic respirator is provided with a hygroscopic agent inlet on the upper side of the container main body and with a hygroscopic agent outlet on the lower side. Then, the hygroscopic agent is introduced into the container main body from the hygroscopic agent inlet, and the hygroscopic agent in the container main body is discharged from the hygroscopic agent outlet.
Japanese Utility Model Publication No. 5-18012

  By the way, due to the respiration action of a transformer or the like, the hygroscopic agent repeatedly absorbs moisture in the atmosphere, so that the moisture is sufficiently absorbed and the hygroscopic effect of the hygroscopic agent is reduced (deteriorated). For example, when the hygroscopic agent is silica gel, the blue silica gel initially changes from red to pink, and changes color to transparent (white) when moisture is sufficiently absorbed. And when the hygroscopic effect of a hygroscopic agent falls, it is necessary to replace a hygroscopic agent with a new hygroscopic agent. At this time, the discoloration state of the hygroscopic agent is visually confirmed from the outside of the container main body, and when it is discolored to a color indicating deterioration (transparent or the like), it is determined that it is a replacement time. And all the hygroscopic agents in a container main body were discharged | emitted from the hygroscopic agent discharge port, and the new hygroscopic agent was thrown in into the container main body from the hygroscopic agent injection port.

  Thus, the discoloration state of the hygroscopic agent was visually confirmed from the outside of the container body to determine the replacement time. That is, when the hygroscopic agent located in the outer peripheral portion in the container main body has changed to a color indicating deterioration, it has been determined that all the hygroscopic agents in the container main body have deteriorated. However, the present inventor has conducted research and has confirmed that not all of the hygroscopic agent in the container body deteriorates equally. That is, it was confirmed that the hygroscopic agent located in the outer peripheral portion in the container body deteriorates faster than the hygroscopic agent located in the central portion in the container main body. Furthermore, it was confirmed that the hygroscopic agent located in the central part in the container body hardly absorbs moisture, that is, does not easily deteriorate even after a long period of time. And from these, it came to confirm that more air | atmosphere passes the outer peripheral part in a container main body.

  Therefore, even if the hygroscopic agent located at the outer peripheral portion in the container main body deteriorates, the hygroscopic agent located at the central portion often does not deteriorate. For this reason, when all the hygroscopic agents are replaced when the hygroscopic agent located on the outer peripheral portion in the container body is deteriorated, the non-degraded hygroscopic agent located in the central portion is also replaced. Was wasting the hygroscopic agent. That is, all the hygroscopic agents in the container main body have not been effectively used, and a sufficient hygroscopic function corresponding to the amount of the hygroscopic agent accommodated has not been achieved.

  Therefore, an object of the present invention is to provide a hygroscopic respirator that can effectively use all the hygroscopic agents in the container body and an inner cylinder for the hygroscopic respirator.

In order to achieve the above object, according to the first aspect of the present invention, a cylindrical container main body for storing a hygroscopic agent is disposed substantially vertically, and is connected to a device such as a transformer on the upper side of the container main body. In a hygroscopic respirator in which air flows from the lower side of the container body and passes through the hygroscopic agent, and is directed from the breathing pipe toward the device side, a cylindrical inner cylinder is provided in the container body. It is arranged substantially concentrically with the vertical center, and is characterized in that a hygroscopic agent is accommodated between the inner cylinder and the container body.
(Function)
Since the hygroscopic agent is stored between the inner cylinder and the container body, that is, the hygroscopic agent is stored in the outer peripheral portion of the container main body through which more air passes, all the hygroscopic materials stored The agent absorbs a lot of moisture. For this reason, the hygroscopic effect of all the hygroscopic agents accommodated falls uniformly (deteriorates).

According to a second aspect of the present invention, in the hygroscopic respirator according to the first aspect, a vent hole smaller than the hygroscopic agent is formed in the peripheral wall of the inner cylinder.
(Function)
The air that has flowed in from the lower side of the container body also flows into the inner cylinder, and this air flows to the moisture absorbent side through the vent holes of the inner cylinder. On the other hand, the air that has passed through the hygroscopic agent accommodated between the inner cylinder and the container body flows into the inner cylinder through the vent hole of the inner cylinder. In this way, the air flows through the inner cylinder and the hygroscopic agent. In addition, the state of the hygroscopic agent (discolored state) located on the outer peripheral surface side of the inner cylinder can be visually observed from the inside of the inner cylinder through the vent hole.

  In the invention according to claim 3, a cylindrical container main body containing a hygroscopic agent is arranged substantially vertically, and a breathing tube connected to a device side such as a transformer is provided on the upper side of the container main body, In the hygroscopic respirator in which the air flows in from the lower side of the container body and passes through the hygroscopic agent, and is directed from the breathing tube toward the device side, an inner cylinder for the hygroscopic respirator disposed in the container main body of the hygroscopic respirator A cylindrical inner cylinder main body and fixing means for positioning the inner cylinder main body substantially concentrically with the vertical center of the container main body are provided.

  The invention described in claim 4 is characterized in that, in the hygroscopic respiratory inner cylinder according to claim 3, a vent hole smaller than the hygroscopic agent is formed in the peripheral wall of the inner cylinder main body.

  According to the first aspect of the present invention, since the hygroscopic effect of all the hygroscopic agents accommodated is uniformly reduced (deteriorated), all the hygroscopic agents in the container body can be used effectively. That is, when some of the moisture absorbent visible from the outside of the container body (the moisture absorbent located on the inner peripheral surface side of the container body) is discolored to indicate a deterioration, almost all of the moisture absorbent deteriorates. Will be. For this reason, even if it judges replacement time based on the discoloration state of some hygroscopic agents which can be visually observed, and replaces all the hygroscopic agents with a new hygroscopic agent, a hygroscopic agent is not wasted. And since a hygroscopic agent is accommodated between an inner cylinder and a container main body, the accommodation amount (usage amount) of a hygroscopic agent can be reduced compared with the case where a hygroscopic agent is accommodated in all in a container main body. That is, only a necessary amount of the hygroscopic agent is accommodated in a site where moisture is favorably absorbed, and all the hygroscopic agents can be used effectively without waste.

  According to the second aspect of the present invention, since the atmosphere flows between the inner cylinder and the hygroscopic agent, the hygroscopic agent located on the outer peripheral surface side (center side in the container body) of the inner cylinder is good with the atmosphere. To touch. As a result, all the hygroscopic agents from the outer peripheral surface side of the inner cylinder to the inner peripheral surface side of the container main body (hygroscopic agents on substantially the same plane) absorb moisture more evenly and deteriorate more uniformly. That is, all the hygroscopic agents can be used effectively without waste. Furthermore, since it is possible to visually check the state (discolored state) of the hygroscopic agent located on the outer peripheral surface side of the inner cylinder, it becomes possible to more appropriately determine the replacement time of the hygroscopic agent.

  According to the third and fourth aspects of the present invention, the hygroscopic respirator inner cylinder is disposed by the fixing means so that the inner cylinder main body is positioned substantially concentrically with the vertical center of the container main body. By storing the hygroscopic agent between the container main body, all the hygroscopic agents can be used effectively without waste. In addition, the hygroscopic respirator can be used effectively without waste by replacing the hygroscopic respirator without replacing the entire hygroscopic respirator. It can be used effectively.

  Hereinafter, the present invention will be described based on the illustrated embodiments.

  FIG. 1 is a front view showing a hygroscopic respirator 1 according to an embodiment of the present invention. The hygroscopic respirator 1 mainly includes a glass tube 2 (container main body), an upper lid fitting 3, a bottom lid fitting 4, a breathing tube 5, an oil bottle 6, an exhaust tube 7, and an inner tube 8.

  The glass tube 2 is a transparent glass cylinder, and the upper lid 3 is attached to the upper end of the glass tube 2 via a gasket (not shown), and the bottom lid 4 is attached to the lower end of the glass tube 2 via a gasket (not shown). It has been. That is, the upper lid metal fitting 3 and the bottom lid metal fitting 4 are fastened by the long bolts 9 with the upper and lower ends of the glass tube 2 held between the upper lid fitting 3 and the bottom lid fitting 4. Then, in the glass tube 2 sealed in this manner, silica gel 13 (a hygroscopic agent) is enclosed (accommodated) as will be described later. In FIG. 1, the silica gel 13 is indicated by a two-dot chain line for the sake of explanation.

  A hygroscopic agent inlet 3a is provided at a position (outer peripheral portion) shifted from the center of the upper lid fitting 3, and an inlet cap 10 is attached to the hygroscopic agent inlet 3a. A breathing tube 5 is attached to the outer peripheral portion of the upper lid fitting 3 facing the hygroscopic agent inlet 3a with a bolt 11 via a flange portion 5a. The breathing pipe 5 is a vent pipe that is connected to a transformer-side conservator (not shown), sends air to the transformer side, and receives exhaust from the transformer side.

  A hygroscopic agent discharge port 4a is provided on the outer peripheral portion (substantially directly below the hygroscopic agent input port 3a) shifted from the center of the bottom cover metal fitting 4, and a discharge cap 12 is attached to the hygroscopic agent discharge port 4a. A cylindrical intake cylinder 4b and an exhaust cylinder 4c are formed on the lower surface side of the bottom cover metal fitting 4 so that the exhaust cylinder 4c is positioned at the center of the bottom cover metal fitting 4, that is, the vertical center of the glass cylinder 2. It is arranged. And the oil tank 6 which accommodates (stores) the oil 14 is attached so that this intake cylinder 4b and the exhaust cylinder 4c may be covered.

  The oil cup 6 has a cylindrical shape with a bottom, and is attached in a state where the upper flange portion 6 a is attached to the attachment portion 4 d of the bottom lid metal fitting 4. Further, a partition plate 6b is provided in the oil tub 6 and is divided into an intake chamber 6c and an exhaust chamber 6d by the partition plate 6b. The intake cylinder 4b of the bottom cover fitting 4 is accommodated in the intake chamber 6c, and the exhaust cylinder 4c is accommodated in the exhaust chamber 6d. Further, below the flange portion 6a, an intake port 6e through which air flows is provided on the intake chamber 6c side, and an exhaust port 6f for exhausting to the atmosphere is provided on the exhaust chamber 6d side.

  Further, a through hole 4e communicating with the exhaust cylinder 4c is formed at the center of the bottom lid metal fitting 4, and an exhaust pipe 7 is inserted (press-fitted) into the through hole 4c. As a result, the exhaust pipe 7 is positioned at the vertical center (center axis) of the glass cylinder 2 so that the oil tank 6 (exhaust chamber 6d) and the respiratory pipe 5 communicate with each other through the exhaust pipe 7 and the exhaust cylinder 4c. It has become. Further, the bottom lid fitting 4 is provided with an air hole (not shown) through which the air flowing in from the intake port 6e of the oil bottle 6 flows into the glass tube 2 from the intake chamber 6c.

  The inner cylinder 8 includes an inner cylinder main body 81 in which a metal mesh is formed in a cylindrical shape, and an acrylic disc-shaped fixing plate 82 (fixing means). That is, as shown in FIG. 2, a mounting hole 82a is formed in the central portion of the fixed platen 82, and the four fixed plates 82 are exhausted at substantially equal intervals in a state where the exhaust pipe 7 is press-fitted into the mounting hole 82a. 7 is attached. Further, a vertical wall 82b perpendicular to the board surface is formed on the periphery of the fixed plate 82, and is fixed in a state where the inner cylinder main body 81 is wound around the vertical wall 82b, and is disposed in the glass tube 2. Thus, the vertical center of the inner cylinder body 81 is concentric with the vertical center of the glass cylinder 2 (exhaust pipe 7).

  The length (height) of the inner cylinder main body 81 is set slightly shorter than the length of the exhaust pipe 7, and the outer diameter of the inner cylinder main body 81 is different from that of the inner cylinder main body 81 through a ventilation path through which a large amount of air passes. It is set so as to be sandwiched between the glass cylinders 2. That is, it is set so that the amount of air flowing through the inner cylinder main body 81 is small and the amount of air flowing through the region (space) sandwiched between the inner cylinder main body 81 and the glass cylinder 2 is increased while the silica gel 13 is accommodated. . For example, when the inner diameter of the glass cylinder 2 is about 130 mm, the outer diameter of the inner cylinder main body 81 is set to about 50 mm. Furthermore, the mesh of the metal mesh which is the peripheral wall of the inner cylinder main body 81 has a role as a vent as will be described later, and its size is set smaller than that of the silica gel 13. The silica gel 13 is accommodated between the inner cylinder body 81 of the inner cylinder 8 and the glass cylinder 2. Note that the silica gel 13 is not accommodated in the inner cylinder 8.

  Further, a porous bottom plate 15 is provided at the lower end portion of the inner cylinder 8. The perforated bottom plate 15 is composed of a plate-shaped wire mesh, and is formed so as to incline downward from the inner peripheral surface of the glass tube 2 toward the mouth of the moisture absorbent discharge port 4a. Thereby, when discharging the silica gel 13, the silica gel 13 in the glass tube 2 is easy to flow to the hygroscopic agent outlet 4a side.

  Next, the operation of the hygroscopic respirator 1 having such a configuration will be described.

  First, in a state where the silica gel 13 is not sealed in the glass cylinder 2, the silica gel 13 is introduced between the inner cylinder body 81 of the inner cylinder 8 and the glass cylinder 2 from the hygroscopic agent inlet 3 a by removing the charging cap 10. Then, the charging cap 10 is attached (tightened) again. Next, the respiratory tube 5 is connected to a conservator, and the hygroscopic respirator 1 is attached to the transformer side.

  Then, due to the respiratory action of the transformer, the atmosphere is sucked into the transformer via the hygroscopic respirator 1, and the exhaust from the transformer is discharged (exhaust) to the atmosphere via the hygroscopic breather 1. That is, at the time of intake, the air flows from the intake port 6e of the oil bottle 6 and passes through the oil 14 in the intake chamber 6c and flows into the glass tube 2 from the air hole of the bottom cover fitting 4. And it passes through the silica gel 13 in the glass cylinder 2 from the lower part to the upper part (passes through), and flows into the conservator (transformer side) from the intake pipe 5. Further, as shown in FIG. 3, the air flowing in from the air hole of the bottom lid metal fitting 4 also flows into the inner cylinder body 81 of the inner cylinder 8, and this atmosphere passes through the mesh of the inner cylinder body 81 to the silica gel 13 side. Flowing into. On the other hand, the air that has passed through the silica gel 13 flows into the inner cylinder body 81 through the mesh of the inner cylinder body 81. Thus, the atmosphere flows through the inner cylinder body 81 of the inner cylinder 8 and the silica gel 13.

  In this way, when the atmosphere passes through the silica gel 13, moisture in the atmosphere is absorbed by the silica gel 13, and a reduction in the dielectric strength of the transformer is prevented. On the other hand, at the time of exhaust, the exhaust from the transformer (conservator) flows from the intake pipe 5, passes through the exhaust pipe 7 and passes through the oil 14 in the exhaust chamber 6d of the oil tank 6, and the exhaust port 6f. From the atmosphere.

  By repeating such intake and exhaust, the silica gel 13 absorbs moisture, and the moisture absorption effect gradually decreases (deteriorates). When this deterioration state is expressed by color, the initially blue silica gel 13 changes from red to pink and becomes transparent (white) in a state where moisture is sufficiently absorbed. Then, in order to replace the silica gel 13 whose moisture absorption effect has been lowered with a new silica gel, the following may be performed. That is, after the discharge cap 12 is removed and all the silica gel 13 is discharged from the hygroscopic agent outlet 4a, the discharge cap 12 is attached again. Then, in the same manner as described above, new silica gel may be introduced into the glass tube 2 from the hygroscopic agent inlet 3a.

  By the way, this inventor repeated research and came to confirm that more air | atmosphere passes the outer peripheral part in the glass cylinder 2. FIG. And in this moisture absorption respirator 1, since the silica gel 13 is accommodated between the inner cylinder main body 81 of the inner cylinder 8, and the glass cylinder 2 as mentioned above, that is, the glass cylinder through which more air | atmosphere passes. Since the silica gel 13 is accommodated only in the outer peripheral portion in 2, the accommodated all silica gels 13 absorb a lot of moisture. For this reason, the moisture absorption effect of all the silica gel 13 accommodated falls uniformly (deteriorates). Further, as described above, since the atmosphere flows through the inner cylinder body 81 of the inner cylinder 8 and the silica gel 13, the silica gel 13 positioned on the outer peripheral surface side (center side in the glass cylinder 2) of the inner cylinder body 81. Is in good contact with the atmosphere. As a result, all the silica gels 13 extending from the outer peripheral surface side of the inner cylinder main body 81 to the inner peripheral surface side of the glass tube 2 absorb moisture more evenly and deteriorate more uniformly. That is, the silica gel 13 on substantially the same plane deteriorates more evenly.

  As a result, all the accommodated silica gels 13 can be used effectively without waste. That is, when the silica gel 13 located in the outermost peripheral portion (inner peripheral surface side of the glass tube 2) in the glass tube 2 visible from the outside of the glass tube 2 is discolored transparently, almost all of the silica gel 13 is It has deteriorated. For this reason, even if it judges replacement time based on the discoloration state of some visible silica gels 13 and replaces all the silica gels 13 with new silica gels 13, the silica gel 13 is not wasted. That is, the silica gel 13 that has not deteriorated is not replaced. And in order to accommodate the silica gel 13 only between the inner cylinder main body 81 of the inner cylinder 8 and the glass cylinder 2, compared with the case where the silica gel 13 is accommodated in all the glass cylinders 2 including the inner cylinder 8, The accommodation amount (use amount) of the silica gel 13 can be reduced. That is, only a necessary amount of silica gel 13 is accommodated only in the outer peripheral portion in the glass tube 2 which is a portion where moisture is favorably absorbed, and all of the silica gel 13 can be used effectively without waste.

  On the other hand, if the inner cylinder 8 is not provided, a part of the accommodated silica gel 13 must be replaced wastefully. That is, when the silica gel 13 is accommodated in the entire glass cylinder 2, as shown in FIG. 4, the amount of air passing through the silica gel 13 located at the central portion (exhaust pipe 7) in the glass cylinder 2 is small, and the silica gel The moisture absorption of 13 is small. For this reason, even if the silica gel 13 located in the outer peripheral part in the glass cylinder 2 deteriorates, the silica gel 13 located in the center part often does not deteriorate. When all the silica gels 13 are replaced at the time when the silica gel 13 located on the outer peripheral portion in the glass tube 2 is deteriorated, the undegraded silica gel 13 located in the central portion is also replaced. The silica gel 13 to be used is wasted. That is, all the silica gels 13 in the glass cylinder 2 are not effectively used, and a sufficient moisture absorption function according to the amount of the silica gel 13 is not achieved.

  By the way, as mentioned above, since the inner cylinder main body 81 of the inner cylinder 8 is comprised with the metal mesh, it is on the outer peripheral surface side (center part side in the glass cylinder 2) of the inner cylinder main body 81 through the mesh of a metal mesh. It is possible to visually check the discolored state of the silica gel 13 positioned. For example, as shown in FIG. 5, the silica gel 13 appearing from the mesh of the wire mesh can be visually observed by removing the charging cap 10 and peeking inside the inner cylinder main body 81 from the moisture absorbent charging port 3a. Thereby, it becomes possible to judge the replacement time of the silica gel 13 more appropriately. That is, not only the discoloration state of the silica gel 13 located at the outermost peripheral portion in the glass tube 2 visible from the outside of the glass tube 2 but also the discoloration state of the silica gel 13 located on the center side in the glass tube 2 should be observed. Therefore, the deterioration state of the entire silica gel 13 can be grasped more accurately, and the replacement time can be judged more appropriately.

  Further, for example, when only the silica gel 13 located at the outermost peripheral portion in the glass tube 2 is discolored transparently, and the silica gel 13 located at the center portion side in the glass tube 2 is discolored to about red, It can be determined that the outer diameter of the inner cylinder main body 81 of the cylinder 8 is not appropriate. That is, in such a case, it can be determined that the passage of the atmosphere is small in the silica gel 13 located on the center side in the glass tube 2. For this reason, the outer diameter of the inner cylinder main body 81 can be enlarged, and only a more appropriate required amount of silica gel 13 can be accommodated. As described above, the discoloration state of the silica gel 13 positioned on the center side in the glass tube 2 can be visually checked, so that the outer diameter of the inner tube body 81 can be adjusted and the silica gel 13 can be used effectively without waste. It becomes.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the present embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention. It is. For example, the inner cylinder main body 81 of the inner cylinder 8 may be made of a plate material, and a vent hole may be provided in the plate material (peripheral wall). Further, the inner cylinder body 81 is positioned so as to be concentric with the vertical center of the glass cylinder 2 by the fixed plate 82 attached to the exhaust pipe 7, for example, between the inner cylinder body 81 and the glass cylinder 2. A radial fixing member (fixing means) may be provided, and the inner cylinder main body 81 may be positioned concentrically with the vertical center of the glass cylinder 2 by this fixing member.

  Furthermore, it goes without saying that the present hygroscopic respirator 1 can be attached not only to the transformer but also to other devices such as an oil tank. Furthermore, only a hygroscopic respirator in which a valve chamber (a container containing an intake valve and an exhaust valve) other than the oil bottle 6 is provided on the lower side of the glass tube 2, and a hygroscopic agent outlet 4a are provided. Of course, the same effect as that of the present hygroscopic respirator 1 can be obtained by disposing the inner cylinder 8 in the hygroscopic respirator.

  Moreover, you may make it arrange | position the above inner cylinders 8 (inner cylinder for moisture absorption respirators) to the existing moisture absorption respirator. For example, by mounting the fixed plate 82 of the inner cylinder 8 on the exhaust pipe of an existing hygroscopic respirator as described above, the same structure as the present hygroscopic respirator 1 can be obtained and the same effect can be obtained. it can. That is, by disposing the inner cylinder 8 in the existing hygroscopic respirator without replacing the entire hygroscopic respirator, all of the silica gel 13 can be used effectively without waste, and the existing hygroscopic respirator is effective. Can be used.

The front view (partial sectional view) of the hygroscopic respirator according to the embodiment of the present invention. The front view (a) and top view (b) which show a part of inner cylinder of the hygroscopic respirator concerning embodiment of this invention. The schematic diagram which shows the flow of the atmosphere in the hygroscopic respirator concerning embodiment of this invention. The schematic diagram which shows the flow of the air | atmosphere in the hygroscopic respirator in which the inner cylinder is not provided. The moisture absorption respirator concerning the embodiment of the present invention is a figure showing the state which is looking at the discoloration state of the silica gel located in the outer peripheral surface side of an inner cylinder main part.

Explanation of symbols

1 Hygroscopic respirator 2 Glass tube (container body)
DESCRIPTION OF SYMBOLS 3 Top cover metal fitting 3a Hygroscopic agent inlet 4 Bottom cover metal fitting 4a Hygroscopic discharge port 4b Intake cylinder 4c Exhaust cylinder 5 Respiratory pipe 6 Oil bottle 6b Partition plate 6c Intake chamber 6d Exhaust chamber 6e Inlet 6f Exhaust outlet 7 Exhaust pipe 8 Inner cylinder 81 Inner cylinder body 82 Fixed platen (fixing means)
13 Silica gel (hygroscopic agent)
14 oil 15 perforated bottom plate

Claims (4)

A cylindrical container main body that accommodates the hygroscopic agent is arranged substantially vertically, and a breathing tube connected to a device side such as a transformer is provided on the upper side of the container main body, and the atmosphere is provided from the lower side of the container main body. In the hygroscopic respirator that flows in and passes through the hygroscopic agent, toward the device side from the respiratory tract,
In the container body, a cylindrical inner cylinder is disposed substantially concentrically with the vertical center of the container body, and the moisture absorbent is accommodated between the inner cylinder and the container body.
A hygroscopic respirator characterized by that. A vent hole smaller than the hygroscopic agent is formed on the peripheral wall of the inner cylinder,
The hygroscopic respirator according to claim 1. A cylindrical container main body that accommodates the hygroscopic agent is arranged substantially vertically, and a breathing tube connected to a device side such as a transformer is provided on the upper side of the container main body, and the atmosphere is provided from the lower side of the container main body. In the hygroscopic respirator that flows in, passes through the hygroscopic agent, and is directed to the device side from the breathing tube, a hygroscopic respirator inner cylinder disposed in the container body of the hygroscopic respirator,
A cylindrical inner cylinder main body, and a fixing means for positioning the inner cylinder main body substantially concentrically with the vertical center of the container main body,
An inner cylinder for a hygroscopic respiratory device. A vent hole smaller than the hygroscopic agent is formed in the peripheral wall of the inner cylinder main body,
The inner cylinder for a hygroscopic respiratory apparatus according to claim 3.

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