CN111541154B - Prevent condensation device in high-low pressure cabinet - Google Patents
Prevent condensation device in high-low pressure cabinet Download PDFInfo
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- CN111541154B CN111541154B CN202010388072.3A CN202010388072A CN111541154B CN 111541154 B CN111541154 B CN 111541154B CN 202010388072 A CN202010388072 A CN 202010388072A CN 111541154 B CN111541154 B CN 111541154B
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- guide plate
- dew point
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- 238000009833 condensation Methods 0.000 title claims abstract description 62
- 230000005494 condensation Effects 0.000 title claims abstract description 51
- 238000007664 blowing Methods 0.000 claims abstract description 53
- 239000011229 interlayer Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 12
- 238000012544 monitoring process Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000005518 polymer electrolyte Substances 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Abstract
The invention provides a condensation preventing device in a high-low voltage cabinet, which relates to the field of electric power safety.A cabinet body is provided with a double-layer structure, and electric power equipment is placed in an inner cabinet; an interlayer is arranged between the cabinet body and the inner cabinet; a condensation sensor, a controller and a power supply are arranged in the inner cabinet, a blowing device is arranged at the top of the inner cabinet, and a guide plate is arranged between the cabinet body and a top interlayer of the inner cabinet; the guide plate is provided with convection holes and is connected with the confluence groove; the condensation sensor is electrically connected with the controller, the controller is electrically connected with the blowing device, the blowing device is communicated with the power supply, and a blowing port of the blowing device faces to an interlayer between the inner cabinet and the cabinet body; the blowing device comprises a warm air blower. The invention can ensure the temperature in the inner cabinet, reduce the temperature difference between the inside and the outside of the inner cabinet, avoid condensation and ensure the safety of power equipment. The humidity condition in the condensation sensor and the controller real-time monitoring inner cabinet avoids condensation to produce, influences the normal operation of the power equipment in the inner cabinet.
Description
Technical Field
The invention belongs to the field of electric power safety, and particularly relates to an anti-condensation device in a high-low voltage cabinet.
Background
Outdoor high-low voltage cabinet is because of exposing outdoors, receives the influence of external climatic environment easily, and weather, humid weather and marine climate that the difference in temperature is big all cause the high-low voltage cabinet in easily to produce the condensation, leads to serious consequence such as electrical components malfunction or burn, switchgear tripping operation easily.
The existing condensation preventing device uses a double-layer cabinet body, and heat insulation materials are filled in an interlayer to ensure the internal temperature of the high-low voltage cabinet, but because power equipment in the cabinet body needs a connecting cable, the temperature of the cabinet body is lower than the expected temperature, moisture enters the internal part of the cabinet body, and in addition, because the dew point temperature is not a fixed value, the high-low voltage cabinet still has the risk of condensation along with the change of the environmental temperature.
Disclosure of Invention
The invention provides a condensation preventing device in a high-low voltage cabinet, which aims to solve the technical problem.
The invention provides an anti-condensation device in a high-low voltage cabinet, which comprises an inner cabinet, wherein the inner cabinet is arranged inside a cabinet body of the high-low voltage cabinet; a condensation sensor, a controller and a power supply are arranged in the inner cabinet, a blowing device is arranged at the top of the inner cabinet, a guide plate is arranged between the cabinet body and a top interlayer of the inner cabinet, and the guide plate is positioned above the blowing device; the guide plate is provided with a convection hole, the guide plate is connected with a confluence groove, and the confluence groove is provided with a liquid discharge pipe; the condensation sensor is electrically connected with the controller, the controller is electrically connected with the blowing device, the blowing device is communicated with the power supply, and a blowing opening of the blowing device faces to an interlayer between the inner cabinet and the cabinet body; the blowing device comprises a warm air blower.
Furthermore, in order to conveniently monitor the dew point temperature, the controller comprises a dew point measuring module, an operation module and an execution module, wherein a dew point measuring program is stored in the dew point measuring module, the dew point measuring module is electrically connected with the operation module, the operation module is electrically connected with the execution module, and the execution module is electrically connected with the fan heater; the dew point measuring module is used for measuring real-time temperature and relative humidity, calculating dew point temperature and transmitting real-time environment information to the operation module; the operation module judges the trend of the dew point temperature according to the real-time environment information, calculates the difference value between the real-time temperature and the dew point temperature, and opens the fan heater when the difference value between the real-time temperature and the dew point temperature is less than 0.5 ℃.
Furthermore, in order to facilitate the collection of condensation, the guide plate is arranged in a downward inclined mode, the lower end of the guide plate is connected with the confluence groove, and a valve is arranged on the liquid discharge pipe.
In order to collect condensation and facilitate the processing of the cabinet body, the high end of the guide plate is connected with the side plate of the cabinet body. Preferably, the corners of the baffle are provided with rounded corners to avoid condensation collecting at the corners of the baffle.
Further, for the internal pleasing to the eye of the ease cabinet, carry out regularly to the circuit simultaneously, prevent that condensation device includes trough and connecting cable in the high-low voltage cabinet, controller and power are connected with condensation sensor and blast apparatus through connecting cable respectively, connecting cable is located the trough, the setting of inner wall of cabinet in the trough laminating.
Furthermore, in order to avoid direct dripping of condensation on the fan heater and influence on normal use of the fan heater, the blowing device comprises a blowing shell, the fan heater is located in the blowing shell, and the blowing shell is provided with blowing holes.
Preferably, in order to enable the warm air to be effectively diffused, the blowing holes are formed at the top and side surfaces of the blowing housing; the convection hole is arranged along the edge of the guide plate, so that hot air is prevented from directly circulating to the top of the cabinet body through the blowing hole and the convection hole.
In addition, the air blowing holes and the convection holes can also be arranged in a staggered mode.
The condensation preventing device in the high-low voltage cabinet has the advantages that on the basis of a double-layer cabinet body structure, the heat insulation material is omitted from adopting warm air for heat insulation, warm air is blown into the interlayer through the warm air blower, the arrangement can ensure the temperature in the inner cabinet, condensation is not generated due to small temperature difference between the inside and the outside of the inner cabinet, and the safety of electric equipment is ensured.
Because be provided with the convection hole on the guide plate, on the top surface of the cabinet body can be blown to the warm braw, when the top surface of the cabinet body experiences the difference in temperature, will produce at the top surface of the cabinet body. The guide plate receives the dripped condensation and collects and discharges the condensation through the confluence groove. Even if partial condensation drips from the convection hole of the guide plate, the normal use of the electrical equipment cannot be influenced by the condensation dripping from the convection hole due to the arrangement of the inner cabinet.
In addition, the device has still adopted the condensation sensor, utilizes the humidity condition in condensation sensor and the interior cabinet of controller real time monitoring, and when ambient temperature exceeded the limit value, the controller was opened the electric fan heater, promoted the intraformational ambient temperature of intermediate layer, avoided the condensation to produce, influences the interior power equipment normal operating of interior cabinet.
The invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the anti-condensation device in the high-low voltage cabinet.
Fig. 2 is a schematic structural diagram of the inside of the high-low voltage cabinet.
In the figure, the cabinet body 1, the cabinet body 2, the inner cabinet 3, the power equipment 4, the guide plate 5, the convection hole 6, the convergence groove 7, the liquid discharge pipe 8, the condensation sensor 9, the wiring groove 10, the controller 11, the blowing device 12, the blowing shell 13 and the blowing hole.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following explains key terms appearing in the present invention.
Dew point temperature: as the ambient temperature decreases, the saturated vapor pressure es of water gradually decreases, and the difference between e and es at the same temperature is smaller. When dropping to a certain temperature, e ═ es equals, the water vapor in the air will transform to liquid phase and condense into dew, with a relative humidity of 100 [% ] RH, which is called the dew point temperature of the air.
The principle of the condensation sensor 8 is as follows: the polymer electrolyte containing strong polar group and its salt polymer material are made into the humidity-sensing resistance film. The humidity in the environment is measured by utilizing the fact that the resistance value is changed due to the fact that the number of conducting ions generated by ionization of the polymer electrolyte under different humidity is different. Under low humidity adsorption, the resistance value is high because no charged ions are generated. When the relative humidity increases, the condensed adsorbed water becomes a conductive channel, paired ions of the polymer electrolyte act as carriers, and protons (H +) and water and hydrogen ions (H3O +) adsorbed by the water itself also act as carriers, so that the resistance of the sensor decreases rapidly.
The specific implementation mode is as follows:
the invention provides an anti-condensation device in a high-low voltage cabinet, which comprises an inner cabinet 2, wherein the inner cabinet 2 is arranged inside a cabinet body 1 of the high-low voltage cabinet, electric equipment 3 is placed in the inner cabinet 2, and as shown in figure 1, an interlayer is arranged between the cabinet body 1 and the inner cabinet 2; install condensation sensor 8, controller 10 and power in interior cabinet 2 and install in interior cabinet 2, blast apparatus 11 is installed at the top of interior cabinet 2, install guide plate 4 between the top intermediate layer of the cabinet body 1 and interior cabinet 2, guide plate 4 is located blast apparatus 11 top.
As shown in fig. 2, the guide plate 4 is provided with a convection hole 5, the guide plate 4 is connected with a confluence groove 6, and the confluence groove 6 is provided with a drain pipe 7; the condensation sensor 8 is electrically connected with a controller 10, the controller 10 is electrically connected with a blowing device 11, the blowing device 11 is communicated with a power supply, and a blowing opening of the blowing device 11 faces to an interlayer between the inner cabinet 2 and the cabinet body 1; the blowing device 11 includes a fan heater.
Further, for conveniently monitoring the dew point temperature, the controller 10 comprises a dew point measuring module, an operation module and an execution module, wherein a dew point measuring program is stored in the dew point measuring module, the dew point measuring module is electrically connected with the operation module, the operation module is electrically connected with the execution module, and the execution module is electrically connected with the fan heater.
Regarding dew point measurement procedure: the present invention uses the program "SHT xdp. The program can be used to control the on/off of the internal heater, and then the dew point is calculated according to the measured temperature value and the relative humidity value. When this program is run on the command response interface, a prompt ">" is displayed on the computer screen. The user first inputs the letter "S" from the keyboard and then inputs the corresponding number, and the following results are obtained:
when the number "1" is input, the celsius temperature dgC ═ xx.x is measured and displayed;
when the number "2" is input, the relative humidity [% ] RH ═ xx.x is measured and displayed;
when a number of 3 is input, the heater is turned on to increase the temperature of the sensor by 5 ℃;
when a number of 4 is input, the heater is turned off to cool the sensor;
when the number "5" is input, the dew point temperature dpC is displayed as xx.
According to the invention, the output parameters of the dew point measuring program are associated with the operation module as required, and the output parameters comprise real-time environment information such as real-time temperature, relative humidity, dew point temperature and the like.
The dew point measuring module is used for measuring real-time temperature and relative humidity, calculating dew point temperature and transmitting real-time environment information to the operation module; the operation module judges the trend of the dew point temperature according to the real-time environment information, calculates the difference value between the real-time temperature and the dew point temperature, and opens the fan heater when the difference value between the real-time temperature and the dew point temperature is less than 0.5 ℃.
Furthermore, in order to facilitate the collection of condensation, the guide plate 4 is arranged in a downward inclined manner, the lower end of the guide plate 4 is connected with the confluence groove 6, and a valve is arranged on the liquid discharge pipe 7.
In order to collect condensation and facilitate the processing of the cabinet body 1, the high end of the guide plate 4 is connected with the side plate of the cabinet body 1. Preferably, the corners of the deflector 4 are provided with rounded corners, so as to avoid condensation collecting at the corners of the deflector 4.
Further, for the convenience of the internal pleasing to the eye of cabinet 1, regular the circuit simultaneously, prevent that the condensation device includes trough 9 and connecting cable in the high-low voltage cabinet, controller 10 and power are connected with condensation sensor 8 and blast apparatus 11 through connecting cable respectively, the connecting cable is located trough 9, 2 inner walls of cabinet set up in the trough 9 laminating.
Further, in order to avoid that condensation directly drips on the warm air blower and affects the normal use of the warm air blower, the blowing device 11 includes a blowing housing 12, the warm air blower is located in the blowing housing 12, and the blowing housing 12 is provided with a blowing hole 13.
Preferably, the blowing holes 13 are provided at the top and side surfaces of the blowing housing 12 in order to allow the warm air to be effectively diffused; the convection hole 5 is arranged along the edge of the guide plate 4, so that hot air is prevented from directly circulating to the top of the cabinet body 1 through the blowing hole 13 and the convection hole 5.
Furthermore, the blowholes 13 and the convection holes 5 may be arranged alternately.
According to the anti-condensation device in the high-low voltage cabinet, on the basis of the structure of the double-layer cabinet body 1, the heat insulation material is cancelled to adopt warm air for heat insulation, warm air is blown into the interlayer through the warm air blower, the arrangement can ensure the temperature in the inner cabinet 2, condensation is not generated due to small temperature difference between the inside and the outside of the inner cabinet 2, and the safety of the power equipment 3 is ensured.
Because the convection holes 5 are arranged on the guide plate 4, warm air can blow to the top surface of the cabinet body 1, and when the top surface of the cabinet body 1 feels temperature difference, the warm air can be generated on the top surface of the cabinet body 1. The guide plate 4 receives the dripping condensation and discharges the condensation through the confluence groove 6 in a gathering way. Even if partial condensation drips from the convection holes 5 of the guide plate 4, the normal use of the electrical equipment cannot be influenced by the condensation dripping from the convection holes 5 due to the arrangement of the inner cabinet 2.
In addition, the device has still adopted condensation sensor 8, utilize condensation sensor 8 and controller 10 real time monitoring interior cabinet 2 humidity condition, the operation module is according to the real-time environmental information that dew point measurement procedure provided, judge dew point temperature trend, and calculate real-time temperature and dew point temperature difference, when real-time temperature and dew point temperature difference are less than 0.5 ℃, execution module opens blast apparatus 11, promote the ambient temperature in the interlayer, avoid the condensation to produce, influence the normal operating of power equipment 3 in interior cabinet 2.
It will be understood that when an element or layer is referred to as being "on," connected to, "or" coupled to "another element or layer, it can be directly on, connected or coupled to the other element or layer, and intervening elements or layers may also be present. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. Like numbers refer to like elements throughout. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Spatially relative terms such as "under …", "below", "lower", "above", "over", and the like, as may be used herein for ease of description, describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description in this document. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a prevent condensation device in high-low voltage cabinet, includes interior cabinet (2), the inside at the cabinet body (1) of high-low voltage cabinet is installed in interior cabinet (2), and power equipment (3) are placed in interior cabinet (2), its characterized in that: an interlayer is arranged between the cabinet body (1) and the inner cabinet (2);
a condensation sensor (8), a controller (10) and a power supply are arranged in the inner cabinet (2), a blowing device (11) is arranged at the top of the inner cabinet (2), a guide plate (4) is arranged between the cabinet body (1) and a top interlayer of the inner cabinet (2), and the guide plate (4) is positioned above the blowing device (11);
the guide plate (4) is provided with a convection hole (5), the guide plate (4) is connected with a confluence groove (6), and the confluence groove (6) is provided with a liquid discharge pipe (7);
the condensation sensor (8) is electrically connected with the controller (10), the controller (10) is electrically connected with the blowing device (11), the blowing device (11) is communicated with a power supply, and a blowing opening of the blowing device (11) faces to an interlayer between the inner cabinet (2) and the cabinet body (1);
the blowing device (11) comprises a warm air blower;
the guide plate (4) is arranged in a downward inclined mode, the lower end of the guide plate (4) is connected with the confluence groove (6), and a valve is arranged on the liquid discharge pipe (7); the high end of the guide plate (4) is connected with a side plate of the cabinet body (1); and the corners of the guide plate (4) are provided with fillets.
2. The anti-condensation device in the high-low voltage cabinet as claimed in claim 1, wherein: the controller (10) comprises a dew point measuring module, an operation module and an execution module, wherein a dew point measuring program is stored in the dew point measuring module, the dew point measuring module is electrically connected with the operation module, the operation module is electrically connected with the execution module, and the execution module is electrically connected with the fan heater;
the dew point measuring module is used for measuring real-time temperature and relative humidity, calculating dew point temperature and transmitting real-time environment information to the operation module;
the operation module judges the trend of the dew point temperature according to the real-time environment information, calculates the difference value between the real-time temperature and the dew point temperature, and opens the fan heater when the difference value between the real-time temperature and the dew point temperature is less than 0.5 ℃.
3. The anti-condensation device in the high-low voltage cabinet as claimed in claim 1 or 2, wherein: including trough (9) and connecting cable, controller (10) and power are connected with condensation sensor (8) and blast apparatus (11) through connecting cable respectively, connecting cable is located trough (9), cabinet (2) inner wall setting in trough (9) laminating.
4. The anti-condensation device in the high-low voltage cabinet as claimed in claim 1 or 2, wherein: the blowing device (11) comprises a blowing shell (12), the warm air blower is positioned in the blowing shell (12), and a blowing hole (13) is formed in the blowing shell (12).
5. The anti-condensation device in the high-low voltage cabinet as claimed in claim 4, wherein: the air blowing holes (13) are arranged on the top surface and the side surface of the air blowing shell (12).
6. The anti-condensation device in the high-low voltage cabinet as claimed in claim 5, wherein: the convection holes (5) are arranged along the edge of the guide plate (4).
7. The anti-condensation device in the high-low voltage cabinet as claimed in claim 4, wherein: the air blowing holes (13) and the convection holes (5) are arranged in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388072.3A CN111541154B (en) | 2020-05-09 | 2020-05-09 | Prevent condensation device in high-low pressure cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010388072.3A CN111541154B (en) | 2020-05-09 | 2020-05-09 | Prevent condensation device in high-low pressure cabinet |
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| CN111541154A CN111541154A (en) | 2020-08-14 |
| CN111541154B true CN111541154B (en) | 2022-04-08 |
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| CN111541154A (en) | 2020-08-14 |
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Denomination of invention: Anti condensation device in high and low voltage cabinet Effective date of registration: 20221121 Granted publication date: 20220408 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Shun Hua North Road subbranch Pledgor: Shandong United Power Industry Development Co.,Ltd. Registration number: Y2022370000166 |
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Date of cancellation: 20231218 Granted publication date: 20220408 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Shun Hua North Road subbranch Pledgor: Shandong United Power Industry Development Co.,Ltd. Registration number: Y2022370000166 |