CN212542119U - Moisture absorber connecting device and moisture absorber with same - Google Patents
Moisture absorber connecting device and moisture absorber with same Download PDFInfo
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- CN212542119U CN212542119U CN201922302482.7U CN201922302482U CN212542119U CN 212542119 U CN212542119 U CN 212542119U CN 201922302482 U CN201922302482 U CN 201922302482U CN 212542119 U CN212542119 U CN 212542119U
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Abstract
The utility model relates to a desiccator equipment field is a desiccator connecting device and have this connecting device's desiccator very much. The utility model comprises a connecting shell, a transparent cover body and a piston; the upper end of the connecting shell is hermetically connected with an air tap of a transformer conservator air bag, the lower end of the connecting shell is hermetically connected with a main body of the moisture absorber, at least one observation window is further formed in the side wall surface of the connecting shell, and each observation window is arranged along the periphery of the side wall surface of the connecting shell; the transparent cover body is sleeved in the connecting shell, the piston is movably arranged in the transparent cover body and can move up and down in the transparent cover body, and the piston is movably in sealing contact with the transparent cover body; the piston is provided with an air inlet through hole and an air outlet through hole respectively, and the air inlet through hole and the air outlet through hole penetrate through the upper surface and the lower surface of the piston respectively. The utility model discloses it can make maintainer accurate acquisition conservator gasbag operating condition.
Description
Technical Field
The utility model relates to a desiccator equipment field is a desiccator connecting device and have this connecting device's desiccator very much.
Background
The moisture absorber is an important auxiliary device on the oil immersed transformer, and can dry and filter gas entering the transformer conservator air bag from the outside, so that the inside of the conservator air bag is kept dry, and the danger of explosion caused by the fact that moisture and oil are mixed when the conservator air bag breaks is prevented.
The principle of the original moisture absorber is similar to that of a chemically used drying bottle, a replaceable drying core is used in the middle of the original moisture absorber, and the drying core loses the function after being saturated by water, so that electric power maintenance personnel must replace the drying core regularly to avoid accidents, and the original moisture absorber is very troublesome. With the development of science and technology, a maintenance-free moisture absorber is developed, which is based on the principle that the humidity sensor detects the moisture from time to time, when the humidity of the drying core is larger than the set value, the heating rod is started to discharge the moisture adsorbed in the drying core again to recover the drying state, therefore, the drying core can be used repeatedly, the inconvenience caused by frequent replacement of the drying core by power maintenance personnel is avoided, in the prior art, the working state of the moisture absorber for absorbing and exhausting air is generally judged by the air bubble of the oil bottle at the bottom of the moisture absorber, but the process of air suction and exhaust of the moisture absorber is long-term, intermittent and weak, so the display of the oil cup is not obvious enough, the maintenance personnel are easy to make misjudgment, meanwhile, when the oil bottle is used on the maintenance-free moisture absorber in the air suction and exhaust mode, oil in the oil bottle is easy to freeze after being mixed with condensed water discharged by the moisture absorber, and a ventilation opening is blocked, so that the pressure of an oil conservator in the transformer is abnormal, and explosion is caused. In addition, since the air suction/discharge state of the moisture absorber is long-term, intermittent, and weak, false alarm is likely to occur when the air suction/discharge state of the moisture absorber is detected by an electronic sensor.
However, the filtering capacity of the existing "maintenance-free" dehydrating breather still has some problems, and in practice, it is found that a certain amount of moisture is still absorbed in a part of the air bag after the maintenance-free dehydrating breather is adopted. The applicant finally finds out the reason through a large amount of observation and experiments, and the original problem is solved on the moisture discharging maintenance control of the existing maintenance-free moisture absorber: the existing moisture absorber determines whether the moisture removal operation is carried out on the drying core in a one-way mode, and does not consider the working state of the transformer conservator air bag, namely the moisture absorber automatically judges whether the humidity of the drying core in the moisture absorber exceeds a set value or not, and the drying can be started immediately once the humidity exceeds the set value.
The applicant found that the reason for the series of problems is that the operating state of the conservator air bag cannot be known, and the operating state of the conservator air bag is either an air intake state or an air discharge state, so that the operating state of the conservator air bag is simply summarized as an "air intake state" and an "air discharge state".
As to why the operating state of the conservator air bag cannot be known or exactly known, the reason is understood from the role and principle of the conservator air bag; it is known that the conservator of this type of transformer is used to store the oil used to cool the main components of the transformer, because the liquid has thermal expansion phenomenon, the conservator air bag is used to fill the space of the oil to prevent the explosion caused by the contact between the oil and the air, when the oil expands, the conservator air bag will give out air to make the expansion space for the oil, on the contrary, when the oil shrinks, the conservator air bag will suck air to fill the surplus space. The existing oil adopts low expansion coefficient components, so that the volume change is not obvious, and the air inlet and outlet amount of the air bag of the oil conservator is very small and intermittent, similar to the air spitting of fishes in water, namely 'punt, punt and punt …', and the time of one air exhaust or air suction lasts for 1-2 hours; it is also more critical that the workload intensity of the transformer varies according to the power consumption of the whole power grid, and therefore, the transformer is unpredictable, and therefore, the expansion and contraction states of the cooling oil are unpredictable, which results in unpredictable "air suction state" and "air exhaust state" of the conservator air bag.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a first development lies in: provided is a moisture absorber connecting device which enables a maintenance worker to accurately know the operating state of a conservator air bag.
The second invention of the utility model aims to: provided is a moisture absorber, which can control the moisture discharging time of a drying and heating assembly according to the working state of a conservator air bag, thereby overcoming the problem that moisture is sucked into the conservator air bag due to moisture discharging work while the conservator air bag sucks air.
The utility model discloses a first invention mesh realizes through following technical scheme: a dehydrating breather coupling apparatus, comprising: comprises a connecting shell, a transparent cover body and a piston;
the upper end of the connecting shell is hermetically connected with an air tap of a transformer conservator air bag, the lower end of the connecting shell is hermetically connected with a main body of the moisture absorber, at least one observation window is further formed in the side wall surface of the connecting shell, and each observation window is arranged along the periphery of the side wall surface of the connecting shell;
the transparent cover body is sleeved in the connecting shell, the piston is movably arranged in the transparent cover body and can move up and down in the transparent cover body, and the piston is movably in sealing contact with the transparent cover body;
the piston is respectively provided with an air inlet through hole and an air outlet through hole which respectively penetrate through the upper surface and the lower surface of the piston;
the exhaust assembly is arranged on the air outlet through hole and comprises an exhaust plug plugged at an opening above the air outlet through hole, a first fixing piece arranged at an opening below the air outlet through hole and a first elastic piece arranged in the air outlet through hole, wherein the upper end of the first elastic piece is fixed on the exhaust plug, and the lower end of the first elastic piece is fixed on the first fixing piece;
the air inlet assembly is arranged on the air inlet through hole and comprises an air inlet plug plugged at an opening below the air inlet through hole, a second fixing piece arranged at an opening above the air inlet through hole and a second elastic piece arranged in the air inlet through hole, wherein the lower end of the second elastic piece is fixed on the air inlet plug, and the upper end of the second elastic piece is fixed on the second fixing piece.
The working principle and the process are as follows:
after the installation is finished, a cavity between the piston and the oil conservator air bag in the transparent cover body is used as an air suction and exhaust buffer area of the oil conservator air bag;
as shown in fig. 3, because the air suction and exhaust buffer area is a closed space, according to the principle of air pressure balance, when the conservator air bag "spits air" to the connecting device, the spitted air enters the air suction and exhaust buffer area so that the pressure in the area is greater than the pressure in the area below the piston, the piston is pushed to move downwards slightly, the downward displacement of the piston is accumulated along with the increasing of the "spitting" times of the conservator air bag, when the piston moves to the lowest position, the piston is blocked by the drying and heating component on the moisture absorber and cannot move downwards continuously, at the moment, if the conservator air bag continues to "spit air", the pressure pushes the air inlet plug from the air inlet through hole, when the pressure in the air suction and exhaust buffer area is accumulated to a certain value, the air inlet plug is flushed (similar to the principle of the air outlet plug on the pressure cooker) so as to send the air into the moisture absorber, finishing the exhaust work;
similarly, as shown in fig. 4, when the conservator air bag "draws air" into the connecting device, it will preferentially draw air in the air suction and exhaust buffer area, so that the pressure in the air suction and exhaust buffer area will be smaller than the pressure in the area below the piston, so as to "push" the piston to slightly move upwards, as the "air suction" times of the conservator air bag increase, the downward displacement of the piston will be accumulated, when the piston moves to the top, it will not be blocked by the air tap of the conservator air bag to move upwards, and at this time, if the conservator air bag continues "blowing air", its pressure will push the air inlet plug from the air inlet through hole, when the negative pressure in the air suction and exhaust buffer area is accumulated to a certain value, the air in the area below the piston will push the air outlet plug away, so as to suck the air in the moisture absorber into the conservator air bag, thus completing the air suction work;
because the principle of air pressure is utilized, the position of the piston is slightly changed to perform 'quantity accumulation' every time the air spitting or sucking action of the oil conservator air bag, and the corresponding air plug is opened under the action of pressure (just like the boiling of a pressure cooker) to generate 'quality change' when the piston touches the top or the bottom, so that a maintainer can conveniently judge the working state of the oil conservator air bag only by observing the position of the piston in the transparent cover body.
For better implementation of the scheme, the following optimization scheme is also provided:
preferably, the first elastic member and the second elastic member are springs, rubber bands or elastic ropes.
Preferably, the connection housing is a connection flange.
Further, in order to enhance the sealing performance between the piston and the transparent cover body: the piston is also sleeved with at least one sealing ring.
The second purpose of the utility model is realized by the following technical scheme: a dehydrator breather, comprising: the drying and heating device comprises a drying and heating component, an outer cover sleeved outside the drying and heating component, a moisture absorber connecting device positioned at the upper end of the drying and heating component and used for being connected with an oil conservator air bag of a transformer, and a lower end connecting component positioned at the lower end of the drying and heating component and used for allowing air to enter and condensed water to flow out;
the drying and heating assembly comprises a drying and heating device, an inner cover sleeved outside the drying and heating device and a glass cover sleeved outside the inner cover; the drying and heating device comprises an outer wall, the middle of the outer wall is provided with a ventilation cavity extending along the axial direction, the periphery of the outer wall is provided with a plurality of extension walls extending outwards in the radial direction, each extension wall enables the space between the outer wall and the inner cover to be divided into a plurality of drying cavities used for storing drying agents, and a plurality of ventilation ports penetrating through the wall body and a plurality of heating rods arranged along the axial direction are arranged in the wall body of the outer wall.
The device also comprises a controller, a display module, an exhaust infrared sensor, an intake infrared sensor and more than one humidity sensor;
more than one humidity sensor is arranged in the drying cavity along the axial direction, and the humidity sensor is arranged in at least one drying cavity;
the controller is electrically connected with each humidity sensor and used for receiving the detection data of each humidity sensor, and the controller is electrically connected with the display module and used for displaying the detection data of each humidity sensor; the controller is connected with each heating rod and used for controlling each heating rod to perform heating work;
the exhaust infrared sensor is arranged inside the wall body of the connecting shell and positioned on the upper side of the transparent cover body, and is electrically connected with the controller and used for judging whether the transformer conservator air bag is in an air suction state or not;
the air inlet infrared sensor is arranged in the wall body of the connecting shell and positioned on the lower side of the transparent cover body, and the air inlet infrared sensor is electrically connected with the controller and used for judging whether the transformer conservator air bag is in an exhaust state or not;
when the control device detects that the air bag of the transformer conservator is in an exhaust state, the heating rod is controlled to work according to the detection data of the humidity sensor; and when the control device detects that the air bag of the transformer conservator is in an air suction state, the heating rod is controlled to stop working.
The working principle and the process are as follows:
when the exhaust infrared sensor senses the piston, the oil conservator air bag is in an air suction state (the principle is partially described), so that in order to avoid the problem in the background technology (namely, the moisture absorber is dehumidifying and maintaining when the oil conservator air bag works in an air suction state), the controller controls the heating rod to always keep in a stop working state in the process;
when the air inlet infrared sensor senses the piston, the oil conservator air bag is in an exhaust state, and the control device has the same working mode as the maintenance-free moisture absorber in the prior art, namely can control the heating rod to perform moisture removal maintenance at any time according to the detection result of the humidity sensor.
For better implementation of the scheme, the following optimization scheme is also provided:
preferably, the first elastic member and the second elastic member are springs, rubber bands or elastic ropes.
Preferably, the connection housing is a connection flange.
Further, in order to enhance the sealing performance between the piston and the transparent cover body: the piston is also sleeved with at least one sealing ring.
Compared with the prior art, the utility model has the advantages that:
1. the utility model overcomes the problem that the working state is difficult to measure due to the characteristics of small air quantity, intermittent air suction and exhaust, long air suction and exhaust time, unpredictable working state and the like of the conservator air bag, so that maintenance personnel can conveniently judge the working state of the conservator air bag according to the position of the piston;
2. because utilize the utility model discloses a connecting device can judge the operating condition of conservator gasbag, consequently the utility model discloses a moisture absorber can learn this information through infrared ray sensor's response to can rationally control the hydrofuge of heating rod and maintain the opportunity, avoid carrying out the hydrofuge when the conservator gas is breathed in and maintain, thereby avoided the problem in the middle of the hydrofuge maintenance process produced steam is inhaled the conservator gasbag.
Drawings
Fig. 1 is an exploded perspective view of a dehydrating breather coupling device according to embodiment 1;
fig. 2 is a schematic cross-sectional view of a dehydrating breather connecting apparatus according to embodiment 1;
fig. 3 is a schematic view illustrating a suction process of the dehydrating breather coupling apparatus according to embodiment 1;
fig. 4 is a schematic view showing the exhausting process of the dehydrating breather coupling device according to embodiment 1;
fig. 5 is an exploded perspective view of the dehydrator breather of example 2;
fig. 6 is a front view of the dehydrating breather in embodiment 2;
FIG. 7 is a sectional view taken along line A-A of FIG. 6;
fig. 8 is a sectional view taken along the line B-B in fig. 6.
Description of reference numerals: 1-connecting flange, 11-observation window, 2-transparent cover body, 3-piston, 31-air inlet through hole, 32-air outlet through hole, 33-sealing ring, 41-air exhaust plug, 42-first fixing piece, 43-first elastic piece, 51-air inlet plug, 52-second fixing piece and 53-second elastic piece;
6-outer cover, 7-lower end connecting component, 81-inner cover, 82-glass cover, 831-outer wall, 8311-ventilation cavity, 832-extension wall, 833-drying cavity, 834-ventilation hole, 835-heating rod, 91-controller, 92-humidity sensor, 93-display module, 94-exhaust infrared sensor and 95-air inlet infrared sensor.
Detailed Description
The invention is explained in detail below with reference to the accompanying drawings:
example 1:
as shown in fig. 1-4, the embodiment is a dehydrating breather connecting device, which comprises a connecting casing, a transparent cover body 2 and a piston 3;
the upper end of the connecting shell is hermetically connected with an air tap of a transformer conservator air bag, the lower end of the connecting shell is hermetically connected with a main body of the moisture absorber, four observation windows 11 are further formed in the side wall surface of the connecting shell, and each observation window 11 is arranged along the periphery of the side wall surface of the connecting shell;
the transparent cover body 2 is sleeved in the connecting shell, the piston 3 is movably arranged in the transparent cover body 2 and can move up and down in the transparent cover body 2, and the piston 3 is movably contacted with the transparent cover body 2 in a sealing manner;
the piston 3 is provided with an air inlet through hole 31 and an air outlet through hole 32 respectively, and the air inlet through hole 31 and the air outlet through hole 32 respectively penetrate through the upper surface and the lower surface of the piston 3;
an exhaust assembly is arranged on the air outlet through hole 32, the exhaust assembly comprises an exhaust plug 41 plugged at an opening above the air outlet through hole 32, a first fixing piece 42 arranged at an opening below the air outlet through hole 32 and a first elastic piece 43 arranged in the air outlet through hole 32, the upper end of the first elastic piece 43 is fixed on the exhaust plug 41, and the lower end of the first elastic piece 43 is fixed on the first fixing piece 42;
the air inlet assembly is arranged on the air inlet through hole 31 and comprises an air inlet plug 51 plugged at an opening below the air inlet through hole 31, a second fixing piece 52 arranged at an opening above the air inlet through hole 31 and a second elastic piece 53 arranged in the air inlet through hole 31, wherein the lower end of the second elastic piece 53 is fixed on the air inlet plug 51, and the upper end of the second elastic piece is fixed on the second fixing piece 52.
The first elastic member 43 and the second elastic member 53 are springs, rubber bands or elastic ropes. Of course, in other embodiments, an elastic material such as a rubber band or elastic string may be used instead of the spring, depending on cost or process requirements.
The connecting shell is a connecting flange 1.
Two sealing rings 33 are further sleeved on the piston 3.
Example 2:
as shown in fig. 5 to 8, the embodiment is a dehydrating breather, which comprises a drying heating element, a housing 6 sleeved outside the drying heating element, a dehydrating breather connecting device as described in embodiment 1 located at the upper end of the drying heating element and used for connecting with a conservator air bag of a transformer, and a lower end connecting component 7 located at the lower end of the drying heating element and used for entering air and flowing out condensed water;
the drying and heating assembly comprises a drying and heating device, an inner cover 81 sleeved outside the drying and heating device and a glass cover 82 sleeved outside the inner cover 81; the drying and heating device comprises an outer wall 831, the middle of which is provided with a ventilation cavity 8311 extending along the axial direction, a plurality of extension walls 832 extending outwards in the radial direction are arranged on the periphery of the outer wall 831, each extension wall 832 divides the space between the outer wall 831 and the inner cover 81 into a plurality of drying cavities 833 used for storing drying agents, and a plurality of ventilation holes 834 penetrating through the wall body and a plurality of heating rods 835 arranged along the axial direction are arranged in the wall body of the outer wall 831.
The device also comprises a controller 91, a display module 93, an exhaust infrared sensor 94, an intake infrared sensor 95 and more than one humidity sensor 92;
more than one humidity sensor 92 is axially arranged in the drying cavity 833, and the humidity sensor 92 is arranged in at least one drying cavity 833;
the controller 91 is electrically connected to each humidity sensor 92 for receiving the detection data of each humidity sensor 92, and the controller 91 is electrically connected to the display module 93 for displaying the detection data of each humidity sensor 92; the controller 91 is connected with each heating rod 835 and is used for controlling each heating rod 835 to perform heating work;
the exhaust infrared sensor is arranged inside the wall body of the connecting shell and positioned on the upper side of the transparent cover body 2, and the exhaust infrared sensor is electrically connected with the controller 91 and used for judging whether the transformer conservator air bag is in an air suction state or not;
the air inlet infrared sensor is arranged inside the wall body of the connecting shell and positioned on the lower side of the transparent cover body 2, and the air inlet infrared sensor is electrically connected with the controller 91 and used for judging whether the transformer conservator air bag is in an exhaust state or not;
when the control device detects that the air bag of the transformer conservator is in an exhaust state, the heating rod 835 is controlled to work according to the detection data of the humidity sensor 92; when the control device detects that the transformer conservator air bag is in an air suction state, the heating rod 835 is controlled to stop working.
While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.
Claims (8)
1. A dehydrating breather coupling apparatus, comprising: comprises a connecting shell, a transparent cover body (2) and a piston (3);
the upper end of the connecting shell is hermetically connected with an air tap of a transformer conservator air bag, the lower end of the connecting shell is hermetically connected with a main body of the moisture absorber, at least one observation window (11) is further formed in the side wall surface of the connecting shell, and each observation window (11) is arranged along the periphery of the side wall surface of the connecting shell;
the transparent cover body (2) is sleeved in the connecting shell, the piston (3) is movably arranged in the transparent cover body (2) and can move up and down in the transparent cover body (2), and the piston (3) is movably in sealing contact with the transparent cover body (2);
the piston (3) is provided with an air inlet through hole (31) and an air outlet through hole (32), and the air inlet through hole (31) and the air outlet through hole (32) respectively penetrate through the upper surface and the lower surface of the piston (3);
an exhaust assembly is arranged on the air outlet through hole (32), the exhaust assembly comprises an exhaust plug (41) plugged at an opening above the air outlet through hole (32), a first fixing piece (42) arranged at an opening below the air outlet through hole (32) and a first elastic piece (43) arranged in the air outlet through hole (32), the upper end of the first elastic piece (43) is fixed on the exhaust plug (41), and the lower end of the first elastic piece (43) is fixed on the first fixing piece (42);
the air inlet assembly is arranged on the air inlet through hole (31), the air inlet assembly comprises an air inlet plug (51) plugged at an opening below the air inlet through hole (31), a second fixing piece (52) arranged at an opening above the air inlet through hole (31) and a second elastic piece (53) arranged in the air inlet through hole (31), the lower end of the second elastic piece (53) is fixed on the air inlet plug (51), and the upper end of the second elastic piece is fixed on the second fixing piece (52).
2. A dehydrating breather connection apparatus as in claim 1, wherein: the first elastic piece (43) and the second elastic piece (53) are springs, rubber bands or elastic ropes.
3. A dehydrating breather connection apparatus as in claim 1, wherein: the connecting shell is a connecting flange (1).
4. A dehydrating breather connection apparatus as in claim 1, wherein: the piston (3) is also sleeved with at least one sealing ring (33).
5. A dehydrator breather, comprising: comprises a drying heating component, a cover (6) sleeved outside the drying heating component, a moisture absorber connecting device which is arranged at the upper end of the drying heating component and is used for connecting with a conservator air bag of a transformer and is described in claims 1-3, and a lower end connecting component (7) which is arranged at the lower end of the drying heating component and is used for entering air and flowing out condensed water;
the drying and heating assembly comprises a drying and heating device, an inner cover (81) sleeved outside the drying and heating device, and a glass cover (82) sleeved outside the inner cover (81); the drying and heating device comprises an outer wall (831) with a ventilation cavity (8311) extending along the axial direction in the middle, a plurality of extension walls (832) extending outwards in the radial direction are arranged on the periphery of the outer wall (831), each extension wall (832) divides the space between the outer wall (831) and an inner cover (81) into a plurality of drying cavities (833) used for storing drying agents, a plurality of ventilation holes (834) penetrating through the wall body and a plurality of heating rods (835) arranged along the axial direction are arranged in the wall body of the outer wall (831);
the moisture absorber further comprises a controller (91), a display module (93), an exhaust infrared sensor (94), an intake infrared sensor (95) and more than one humidity sensor (92);
more than one humidity sensor (92) is axially arranged in the drying cavity (833), and the humidity sensor (92) is arranged in at least one drying cavity (833);
the controller (91) is electrically connected with each humidity sensor (92) and used for receiving detection data of each humidity sensor (92), and the controller (91) is electrically connected with the display module (93) and used for displaying the detection data of each humidity sensor (92); the controller (91) is connected with the heating rods (835) and is used for controlling each heating rod (835) to perform heating work;
the exhaust infrared sensor (94) is arranged inside the wall body of the connecting shell and positioned on the upper side of the transparent cover body (2), and the exhaust infrared sensor (94) is electrically connected with the controller (91) and used for judging whether the transformer conservator air bag is in an air suction state or not;
the air inlet infrared sensor (95) is arranged inside the wall body of the connecting shell and positioned on the lower side of the transparent cover body (2), and the air inlet infrared sensor (95) is electrically connected with the controller (91) and used for judging whether the transformer conservator air bag is in an exhaust state or not;
when the control device detects that the air bag of the transformer conservator is in an exhaust state, the heating rod (835) is controlled to work according to the detection data of the humidity sensor (92); when the control device detects that the air bag of the transformer conservator is in an air suction state, the heating rod (835) is controlled to stop working.
6. A dehydrator breather as claimed in claim 5, wherein: the first elastic piece (43) and the second elastic piece (53) are springs, rubber bands or elastic ropes.
7. A dehydrator breather as claimed in claim 5, wherein: the connecting shell is a connecting flange (1).
8. A dehydrator breather as claimed in claim 5, wherein: the piston (3) is also sleeved with at least one sealing ring (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302482.7U CN212542119U (en) | 2019-12-19 | 2019-12-19 | Moisture absorber connecting device and moisture absorber with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302482.7U CN212542119U (en) | 2019-12-19 | 2019-12-19 | Moisture absorber connecting device and moisture absorber with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212542119U true CN212542119U (en) | 2021-02-12 |
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ID=74525344
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922302482.7U Active CN212542119U (en) | 2019-12-19 | 2019-12-19 | Moisture absorber connecting device and moisture absorber with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212542119U (en) |
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2019
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