CN112188797A - A automatic instrument for petroleum refining - Google Patents
A automatic instrument for petroleum refining Download PDFInfo
- Publication number
- CN112188797A CN112188797A CN202010970992.6A CN202010970992A CN112188797A CN 112188797 A CN112188797 A CN 112188797A CN 202010970992 A CN202010970992 A CN 202010970992A CN 112188797 A CN112188797 A CN 112188797A
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- CN
- China
- Prior art keywords
- instrument
- rod
- instrument shell
- housing
- meter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/061—Hermetically-sealed casings sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
Abstract
The invention relates to the technical field of automatic instruments and discloses an automatic instrument for petroleum refining, which comprises an instrument shell body which is of a hollow structure, wherein an instrument box is fixedly installed on the side wall of the instrument shell body, a display screen is fixedly installed on the other side wall of the instrument shell body, a key disc positioned below the display screen is fixedly installed on the other side wall of the instrument shell body, rotating grooves are respectively formed in the inner walls of the two sides of the instrument shell body, rotating columns are respectively and rotatably installed in the two rotating grooves, fan blades are respectively and fixedly installed on the outer sides of the two rotating columns, and heat dissipation ports positioned below the rotating grooves are respectively formed in the two sides of the instrument shell body. The instrument shell is cooled by the fan blades, the cooling effect is good, the two cooling holes are sealed after the cooling is carried out by the two sealing plates, dust is prevented from entering the instrument shell, electrical elements in the instrument shell are prevented from being dust, and the using requirement is met.
Description
Technical Field
The invention relates to the technical field of automatic instruments, in particular to an automatic instrument for petroleum refining.
Background
Petroleum is one of the main objects of geological exploration, is a viscous and dark brown liquid called "industrial blood", the upper part of the crust has petroleum storage, the main component is a mixture of various alkanes, cyclanes and aromatics, the crude oil has rich colors, such as very red, golden yellow, dark green, black and brown red, the color of the crude oil is determined by the content of colloid and asphaltene contained in the crude oil, the higher the content is, the darker the color is, during the refining process of petroleum, an automatic control instrument is usually used for controlling and displaying the refining process of petroleum.
The application numbers are: 201910963874.X discloses an automatic instrument for petroleum refining, which relates to the technical field of petroleum refining, and comprises an instrument panel, wherein the back surface of the instrument panel is fixedly connected with an instrument box internally provided with an instrument control chip, the upper part of the front surface of the instrument panel is fixedly embedded with a display screen, the lower part of the front surface of the instrument panel is fixedly connected with a menu option key, a top plate is driven by a connecting rod III to rotate clockwise by taking a pin shaft at the central position as the center, so that ventilation spaces are generated between a side plate I, a side plate II and a side plate groove as well as a top plate and a top groove, air passes through gaps among the side plate I, the side plate II and the side plate groove to circulate the heat inside, therefore, the heat is led out through the ventilation spaces between the top plate and the top groove by rising, internal circulation heat dissipation and elimination are realized, the heat dissipation effect of the device is improved, and the rotation of the side plate I, the side, therefore, the heat dissipation is more stable in the using process;
the application numbers are: 86206495 discloses a coaxial double-pointer electrical instrument, which belongs to a voltage and current measuring instrument and can also be used as a secondary indicating instrument for non-electricity measurement. The instrument has the characteristic of indicating two parameters by double pointers, can ensure that the people who have the same parameters can only use one scale dial, and simultaneously has the function of reading the difference value of the two parameters and the field indicating value of each parameter. The instrument can be widely used in the industries of power generation, petroleum, chemical industry, transportation and the like;
in the use process of an automatic instrument for petroleum refining, a large amount of heat can be generated by the internal components in use, and the internal components are required to be subjected to heat dissipation and cooling treatment.
The above patents have any of the following drawbacks:
firstly, when the temperature is reduced, a fan is generally adopted for active heat dissipation and side plate hole heat dissipation, when a side plate is perforated for heat dissipation, the ventilation quantity and the number of heat dissipation holes can affect part of internal heat dissipation, so that the ventilation effect is insufficient, a large amount of heat in the interior can not be discharged, the interior is high in temperature, and the heat dissipation effect is poor;
second, after the heat dissipation, the louvre can lead to the dust to enter into inside the instrument, influences the use of instrument.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, when the temperature is reduced, a fan is generally adopted for active heat dissipation and side plate hole heat dissipation, when a side plate is perforated for heat dissipation, the ventilation quantity and the quantity of heat dissipation holes can partially influence the internal heat dissipation, so that the ventilation effect is not enough, a large amount of internal heat cannot be discharged, the internal high temperature and the heat dissipation effect are caused, and after the heat dissipation, dust can enter the inside of an instrument through the heat dissipation holes to influence the use of the instrument.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic instrument for petroleum refining comprises an instrument shell body which is arranged into a hollow structure, wherein an instrument box is fixedly arranged on the side wall of the instrument shell body, a display screen is fixedly arranged on the other side wall of the instrument shell body, a key disc positioned below the display screen is fixedly arranged on the other side wall of the instrument shell body, rotating grooves are respectively formed in the inner walls of the two sides of the instrument shell body, rotating columns are respectively and rotatably arranged in the two rotating grooves, fan blades are respectively and fixedly arranged on the outer sides of the two rotating columns, heat dissipation ports positioned below the rotating grooves are respectively formed in the two sides of the instrument shell body, first holes positioned below the heat dissipation ports are respectively formed in the two sides of the instrument shell body, first rods are respectively and rotatably arranged in the two first holes, one ends, far away from each other, of the two first rods respectively extend to the outer side of the instrument shell body and are fixedly provided with, the outer sides of the two rotating columns are fixedly provided with first chain wheels, the outer sides of the two first rods are fixedly sleeved with second chain wheels, the two first chain wheels are meshed with chains, the two first chain wheels are in transmission connection with the corresponding second chain wheels through the two chains respectively, and the second chain wheels drive the first chain wheels to rotate through the chains.
Preferably, equal fixed mounting has the fixed plate on the bottom inner wall of instrument housing, has all seted up the second hole on two fixed plates, and same second pole is installed in two downthehole rotations of second, and the one end that two first poles are close to each other all extends to in the instrument housing and with second pole fixed connection, and the rotation of second pole drives two first poles and rotates.
Preferably, the fixed cover in the outside of second pole is equipped with first bevel gear, and the third hole has been seted up to the bottom of instrument housing, and the third pole is installed to the rotation in the third hole, and the top of third pole extends to in the instrument housing and fixed mounting has second bevel gear, and second bevel gear and first bevel gear mesh mutually, and first bevel gear and second bevel gear change pivoted direction.
Preferably, the bottom fixed mounting of instrument housing has the rotating electrical machines, and the bottom of third pole extends to the below of instrument housing and with the output shaft fixed connection of rotating electrical machines, and the output shaft of rotating electrical machines drives the third pole and rotates.
Preferably, the bottom fixed mounting of instrument housing has four support columns, and four support columns are the bottom that horizontal vertical direction equidistance distributes at instrument housing, and four support columns support instrument housing.
Preferably, the number of fan flabellum is three, and three fan flabellum is annular equidistance and distributes in the outside of rotating the post, and a plurality of fan flabellums are better to the radiating effect of instrument housing.
Compared with the prior art, the invention provides an automatic instrument for petroleum refining, which has the following beneficial effects:
1. according to the automatic instrument for petroleum refining, by starting the rotating motor, the output shaft of the rotating motor drives the third rod to rotate, the third rod drives the second conical gear to rotate, the second conical gear drives the first conical gear to rotate, the first conical gear drives the second rod to rotate, the second rod drives the two first rods to rotate, the two rotating columns drive the fan blades to rotate, the fan blades radiate the instrument shell, the radiating effect is good, meanwhile, the two sealing plates are driven by the two first rods to move, the two radiating holes are opened, and heat in the instrument shell is discharged through the two radiating holes;
2. according to the automatic instrument for petroleum refining, after heat dissipation is finished, the two sealing plates seal the two heat dissipation ports and seal the instrument shell, so that dust is prevented from entering the heat dissipation ports to damage electrical elements in the instrument shell;
the heat dissipation device has the advantages that the heat dissipation effect is good because the heat dissipation is carried out on the instrument shell through the fan blades, the two heat dissipation ports are sealed after the heat dissipation is carried out through the two sealing plates, dust is prevented from entering the instrument shell, electrical elements in the instrument shell are prevented from being dust, and the use requirement is met.
Drawings
FIG. 1 is a schematic front view of an automated meter for petroleum refining according to the present invention;
FIG. 2 is a schematic side view of an automated meter for oil refining according to the present invention;
fig. 3 is a schematic structural diagram of part a of an automated meter for petroleum refining according to the present invention.
In the figure: 1 instrument shell, 2 instrument boxes, 3 display screens, 4 key panels, 5 rotation grooves, 6 rotation columns, 7 fan blades, 8 heat dissipation ports, 9 first holes, 10 first rods, 11 sealing plates, 12 first chain wheels, 13 second chain wheels, 14 chains, 15 fixing plates, 16 second holes, 17 second rods, 18 first bevel gears, 19 third holes, 20 third rods, 21 second bevel gears and 22 rotating motors.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-2, an automatic meter for petroleum refining comprises a meter housing 1 having a hollow structure, a meter box 2 fixedly mounted on a side wall of the meter housing 1, a display screen 3 fixedly mounted on another side wall of the meter housing 1, a key pad 4 fixedly mounted on another side wall of the meter housing 1 and located below the display screen 3, rotation grooves 5 respectively formed on inner walls of both sides of the meter housing 1, rotation columns 6 respectively rotatably mounted in the rotation grooves 5, fan blades 7 respectively fixedly mounted on outer sides of the rotation columns 6, heat dissipation ports 8 respectively formed on both sides of the meter housing 1 and located below the rotation grooves 5, first holes 9 respectively formed on both sides of the meter housing 1 and located below the heat dissipation ports 8, first rods 10 respectively rotatably mounted in the first holes 9, one ends of the two first rods 10 far away from each other both extend to the outer side of the meter housing 1 and are fixedly mounted with a sealing plate 11, and two sealing plates 11 are respectively in sealing fit with the corresponding heat dissipation ports 8, first chain wheels 12 are fixedly mounted on the outer sides of the two rotating columns 6, second chain wheels 13 are fixedly sleeved on the outer sides of the two first rods 10, chains 14 are meshed on the two first chain wheels 12, the two first chain wheels 12 are respectively in transmission connection with the corresponding second chain wheels 13 through the two chains 14, and the second chain wheels 13 drive the first chain wheels 12 to rotate through the chains 14.
As shown in fig. 3, embodiment 2 is on the basis of embodiment 1, and equal fixed mounting has fixed plate 15 on the bottom inner wall of meter housing 1, has all seted up second hole 16 on two fixed plates 15, and same second pole 17 is installed to two second hole 16 internal rotations, and the one end that two first poles 10 are close to each other all extends to meter housing 1 in and with second pole 17 fixed connection, and the rotation of second pole 17 drives two first poles 10 and rotates.
Embodiment 3 as shown in fig. 3, based on embodiment 1, a first bevel gear 18 is fixedly sleeved outside a second rod 17, a third hole 19 is formed at the bottom of the meter housing 1, a third rod 20 is rotatably mounted in the third hole 19, the top end of the third rod 20 extends into the meter housing 1 and is fixedly mounted with a second bevel gear 21, the second bevel gear 21 is meshed with the first bevel gear 18, and the first bevel gear 18 and the second bevel gear 21 change the rotating direction.
Embodiment 4 is based on embodiment 1, as shown in fig. 3, a rotating electrical machine 22 is fixedly mounted at the bottom of the meter housing 1, and the bottom end of the third rod 20 extends to the lower side of the meter housing 1 and is fixedly connected with the output shaft of the rotating electrical machine 22, and the output shaft of the rotating electrical machine 22 drives the third rod 20 to rotate.
Embodiment 6 is based on embodiment 1, as shown in fig. 3, the number of the fan blades 7 is three, and the three fan blades 7 are annularly and equidistantly distributed on the outer side of the rotating column 6, so that the heat dissipation effect of the plurality of fan blades 7 on the instrument housing 1 is better.
Embodiment 7 as shown in fig. 1 to 3, an automatic meter for petroleum refining includes a meter housing 1 having a hollow structure, a meter box 2 fixedly mounted on a side wall of the meter housing 1, a display 3 fixedly mounted on another side wall of the meter housing 1, a key pad 4 fixedly mounted on another side wall of the meter housing 1 and located below the display 3, rotation grooves 5 formed on inner walls of both sides of the meter housing 1, rotation posts 6 rotatably mounted in both the rotation grooves 5, fan blades 7 fixedly mounted on outer sides of both the rotation posts 6, heat dissipation ports 8 formed on both sides of the meter housing 1 and located below the rotation grooves 5, first holes 9 formed on both sides of the meter housing 1 and located below the heat dissipation ports 8, first rods 10 rotatably mounted in both the first holes 9, and a sealing plate 11 fixedly mounted on an end of each of the two first rods 10 away from each other and extending to an outer side of the meter housing 1, the two sealing plates 11 are respectively in sealing fit with the corresponding heat dissipation openings 8, first chain wheels 12 are fixedly mounted on the outer sides of the two rotating columns 6, second chain wheels 13 are fixedly sleeved on the outer sides of the two first rods 10, chains 14 are meshed with the two first chain wheels 12, the two first chain wheels 12 are respectively in transmission connection with the corresponding second chain wheels 13 through the two chains 14, and the second chain wheels 13 drive the first chain wheels 12 to rotate through the chains 14;
equal fixed mounting has fixed plate 15 on the bottom inner wall of meter housing 1, second hole 16 has all been seted up on two fixed plates 15, same second pole 17 is installed to two second hole 16 internal rotations, the one end that two first poles 10 are close to each other all extends to meter housing 1 in and with second pole 17 fixed connection, the rotation of second pole 17 drives two first poles 10 and rotates, the fixed cover in outside of second pole 17 is equipped with first cone gear 18, third hole 19 has been seted up to meter housing 1's bottom, third pole 20 is installed to third hole 19 internal rotation, the top of third pole 20 extends to in meter housing 1 and fixed mounting has second cone gear 21, and second cone gear 21 meshes with first cone gear 18 mutually, first cone gear 18 and second cone gear 21 change pivoted direction, meter housing 1's bottom fixed mounting has rotating electrical machines 22, and the bottom of third pole 20 extends to meter housing 1's below and with rotating electrical machines 22's output shaft fixed connection The output shaft of rotating electrical machines 22 drives third pole 20 and rotates, and the bottom fixed mounting of meter housing 1 has four support columns, and four support columns are the bottom that horizontal vertical direction equidistance distributes at meter housing 1, and four support columns support meter housing 1, and the quantity of fan flabellum 7 is three, and three fan flabellum 7 is the outside that the annular equidistance distributes at rotation post 6, and a plurality of fan flabellum 7 are better to the radiating effect of meter housing 1.
In the invention, when in use, the rotating motor 22 is started, the rotating motor 22 is powered by commercial power, the rotating motor 22 is controlled by the control switch, the output shaft of the rotating motor 22 drives the third rod 20 to rotate, the third rod 20 drives the second bevel gear 21 to rotate, the second bevel gear 21 drives the first bevel gear 18 to rotate, the first bevel gear 18 drives the second rod 17 to rotate, the second rod 17 drives the two first rods 10 to rotate, the two first rods 10 drive the two second chain wheels 13 to rotate, the two second chain wheels 13 drive the two first chain wheels 12 to rotate through the chain 14, the two first chain wheels 12 drive the two rotating columns 6 to rotate, the two rotating columns 6 drive the plurality of fan blades 7 to rotate, the plurality of fan blades 7 dissipate heat from the meter shell 1, the heat dissipation effect is good, and at the same time, the two first rods 10 drive the two sealing plates 11 to move, make two thermovents 8 open, with in the meter housing 1 heat through two thermovents 8 discharge can, after the heat dissipation finishes, two closing plates 11 seal two thermovents 8, seal meter housing 1, prevent that the dust from getting into the electrical components in the damage meter housing 1 from thermovent 8, thereby dispel the heat to meter housing 1 through a plurality of fan blade 7, the radiating effect is good, seal two thermovents 8 after the heat dissipation through two closing plates 11, prevent that the dust from entering meter housing 1 in, electrical components to meter housing 1 in prevents dust, the needs of using have been satisfied.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides an automatic instrument for oil refining, including setting up to hollow structure's meter box (1), a serial communication port, fixed mounting has meter box (2) on the lateral wall of meter box (1), fixed mounting has display screen (3) on another lateral wall of meter box (1), fixed mounting has keypad (4) that are located display screen (3) below on another lateral wall of meter box (1), all seted up rotation groove (5) on the both sides inner wall of meter box (1), all rotate in two rotation grooves (5) and install rotation post (6), the outside of two rotation posts (6) all fixed mounting has fan blade (7), thermovent (8) that are located rotation groove (5) below are all seted up to the both sides of meter box (1), first hole (9) that are located thermovent (8) below are all seted up to the both sides of meter box (1), all rotate in two first holes (9) and install first pole (10), the one end that two first poles (10) kept away from each other all extends to the outside of instrument housing (1) and fixed mounting has closing plate (11), and two closing plate (11) respectively with corresponding thermovent (8) sealed cooperation, the equal fixed mounting in the outside of two rotation posts (6) has first sprocket (12), the outside of two first poles (10) is all fixed the cover and is equipped with second sprocket (13), all mesh on two first sprocket (12) has chain (14), and two first sprocket (12) are connected with corresponding second sprocket (13) transmission respectively through two chain (14).
2. The automatic instrument for refining petroleum according to claim 1, wherein the inner wall of the bottom of the instrument housing (1) is fixedly provided with a fixing plate (15), the two fixing plates (15) are respectively provided with a second hole (16), the two second holes (16) are rotatably provided with a second rod (17), and one ends of the two first rods (10) close to each other extend into the instrument housing (1) and are fixedly connected with the second rods (17).
3. The automatic instrument for refining petroleum according to claim 1, wherein the first conical gear (18) is fixedly sleeved on the outer side of the second rod (17), the third hole (19) is formed in the bottom of the instrument shell (1), the third rod (20) is rotatably installed in the third hole (19), the top end of the third rod (20) extends into the instrument shell (1) and is fixedly provided with the second conical gear (21), and the second conical gear (21) is meshed with the first conical gear (18).
4. An automated meter for oil refining according to claim 1, characterized in that the bottom of the meter housing (1) is fixedly mounted with a rotating electrical machine (22), and the bottom end of the third rod (20) extends to below the meter housing (1) and is fixedly connected with the output shaft of the rotating electrical machine (22).
5. An automatic instrument for refining petroleum according to claim 1, characterized in that four support columns are fixedly installed at the bottom of the instrument housing (1), and the four support columns are equidistantly distributed at the bottom of the instrument housing (1) in the horizontal and vertical direction.
6. An automated meter for oil refining according to claim 1, characterized in that the number of fan blades (7) is three and that the three fan blades (7) are equally spaced in a ring shape outside the rotating column (6).
7. The building control cabinet capable of effectively eliminating electromagnetic interference as claimed in claim 1, wherein the inner wall of the bottom of the instrument housing (1) is fixedly provided with a fixing plate (15), two fixing plates (15) are respectively provided with a second hole (16), the two second holes (16) are rotatably provided with a same second rod (17), and the ends of the two first rods (10) close to each other extend into the instrument housing (1) and are fixedly connected with the second rods (17);
a first bevel gear (18) is fixedly sleeved on the outer side of the second rod (17), a third hole (19) is formed in the bottom of the instrument shell (1), a third rod (20) is rotatably mounted in the third hole (19), the top end of the third rod (20) extends into the instrument shell (1) and is fixedly provided with a second bevel gear (21), and the second bevel gear (21) is meshed with the first bevel gear (18);
the bottom of the instrument shell (1) is fixedly provided with a rotating motor (22), and the bottom end of the third rod (20) extends to the lower part of the instrument shell (1) and is fixedly connected with an output shaft of the rotating motor (22);
the bottom of the instrument shell (1) is fixedly provided with four support columns, and the four support columns are distributed at the bottom of the instrument shell (1) in a horizontal and vertical direction at equal intervals;
the number of the fan blades (7) is three, and the three fan blades (7) are annularly and equidistantly distributed on the outer side of the rotating column (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970992.6A CN112188797A (en) | 2020-09-16 | 2020-09-16 | A automatic instrument for petroleum refining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970992.6A CN112188797A (en) | 2020-09-16 | 2020-09-16 | A automatic instrument for petroleum refining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112188797A true CN112188797A (en) | 2021-01-05 |
Family
ID=73921288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010970992.6A Withdrawn CN112188797A (en) | 2020-09-16 | 2020-09-16 | A automatic instrument for petroleum refining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112188797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285379A (en) * | 2021-05-19 | 2021-08-20 | 安徽龙和电力集团有限公司 | Heat dissipation early warning device for box-type substation |
-
2020
- 2020-09-16 CN CN202010970992.6A patent/CN112188797A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285379A (en) * | 2021-05-19 | 2021-08-20 | 安徽龙和电力集团有限公司 | Heat dissipation early warning device for box-type substation |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210105 |
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| WW01 | Invention patent application withdrawn after publication |