CN110687440A - Isolator operating condition alarm device - Google Patents
Isolator operating condition alarm device Download PDFInfo
- Publication number
- CN110687440A CN110687440A CN201910774565.8A CN201910774565A CN110687440A CN 110687440 A CN110687440 A CN 110687440A CN 201910774565 A CN201910774565 A CN 201910774565A CN 110687440 A CN110687440 A CN 110687440A
- Authority
- CN
- China
- Prior art keywords
- chip microcomputer
- module
- shell
- processing module
- isolating switch
- Prior art date
- 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.)
- Pending
Links
- 230000017525 heat dissipation Effects 0.000 claims description 14
- 230000001702 transmitter Effects 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000149 penetrating Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000875 corresponding Effects 0.000 description 8
- 239000000428 dust Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000000903 blocking Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 241000893018 Armeria Species 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 2
- 230000035512 clearance Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The invention provides an alarm device for the operating condition of an isolating switch, which comprises a shell, wherein a data acquisition module and a processing module are arranged in the shell, a display early warning module is arranged on the surface of the shell, the data acquisition module, the processing module and the display early warning module are sequentially connected, vent holes are formed in two sides of the shell, a gas collection channel is arranged on each vent hole and comprises an arc-shaped channel and a horn-shaped flaring, one end of each arc-shaped channel is buckled on each vent hole, and the other end of each arc-shaped channel is connected with the horn-shaped flaring. When the isolating switch is electrically operated, the data acquisition module acquires a motor current signal, the motor current signal is transmitted to the processing module, and the processing module controls the display early warning module to display different states according to the acquired signal, so that the jamming defect of the isolating switch transmission system is early warned, and the operation condition of the isolating switch is effectively evaluated.
Description
Technical Field
The invention relates to the field of switches, in particular to an alarm device for the operation condition of an isolating switch.
Background
The isolating switch is widely applied to a power system and is indispensable switching equipment in a transformer substation. However, the fault rate of the isolating switch is high, and according to statistics of maintenance units, main faults of the isolating switch include jamming, rusting, damage of an auxiliary switch and the like, the faults are all mechanical faults, and the mechanical faults mainly occur in the opening and closing processes of the isolating switch.
At present, whether operating mode to isolator divide-shut brake in-process all is based on manual observation basically, is difficult to judge isolator and whether has slight jam or serious jam, consequently can leave the trouble hidden danger, still observes the severity that can't quantify the jam simultaneously, and artifical energy is limited, and the inevitable error that can appear during the observation to lead to observing inaccurately, can not clearly judge isolator jam.
Disclosure of Invention
The invention provides an alarm device for the operation condition of an isolating switch, aiming at solving the problems that the severity of the blocking of the isolating switch cannot be quantitatively judged by manual observation and the heat dissipation problem of a switch alarm device, automatically detecting the severity of the blocking of the isolating switch, displaying the severity of the blocking of the isolating switch through an indicator lamp, and solving the heat dissipation problem by convecting air through vent holes on two sides to take away the heat in the device.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a kind of disconnecting switch operation condition alarm device, including the outer casing, there are data acquisition module and processing module in the outer casing, the surface of outer casing has display the early warning module, the said data acquisition module, processing module and display the early warning module to connect sequentially, the invention is while the disconnecting switch is electrically operated, gather the current signal of the electrical machinery through the data acquisition module, and then transmit the current signal of the electrical machinery to the processing module, the processing module controls and displays the early warning module and displays different states according to the signal obtained, thus the early warning disconnecting switch transmission system is stuck in the defect, carry on the effective assessment to the disconnecting switch operation condition; the device is characterized in that ventilation holes are formed in two sides of the shell, the ventilation holes are formed in two sides of the shell and used for enabling air to convect, so that heat in the device is taken away, the temperature of an inner cavity of the shell is reduced, and the heat dissipation of the device is facilitated, a gas collecting channel is arranged on each ventilation hole and comprises an arc-shaped channel and a horn-shaped flaring, one end of the arc-shaped channel is connected to the periphery of each ventilation hole, the other end of the arc-shaped channel is connected with the horn-shaped flaring, the horn-shaped flaring is arranged and used for increasing the wind receiving area, so that air flows into the device as much as possible, the air flow is increased, the arc-shaped channel is used for isolating dust, the air is forced to lift upwards after entering the arc-shaped channel from the horn-shaped flaring, the dust is deposited downwards along the arc-shaped channel and finally stays below the horn-shaped flaring, is convenient to clean.
Preferably, a partition board is arranged in the shell, the partition board divides the interior of the shell into a processing cavity and a collecting cavity, the processing module is arranged in the processing cavity and fixedly connected with the partition board, and the data collecting module is arranged in the collecting cavity and fixedly connected with the shell. Because processing module is the plane sheet metal, if place at the coplanar with data acquisition module and be connected again, can lead to this device whole bulky, the effect that sets up the baffle makes the baffle separate into two parts with the shell is inside, and rational utilization spatial position makes processing module set up in data acquisition module top to reduce the whole size of device, practice thrift the cost.
Preferably, the partition plate is provided with heat dissipation holes and wiring harness holes. The processing module temperature risees in the course of the work, if the temperature lasts the functioning speed that risees and can influence processing module, leads to processing module reaction slow, can burn out processing module further, sets up the louvre and can make processing module's heat give off through the louvre to reduce processing module's temperature, the effect that sets up the pencil hole is run through the baffle, realizes the wiring harness connection in treatment chamber and collection chamber.
Preferably, the shell is provided with a data acquisition hole.
Preferably, the data acquisition module comprises a current transformer and a current transmitter, the acquisition end of the current transformer is connected with a signal wire, the signal wire is connected with the current acquisition terminal through a data acquisition hole, the output end of the current transformer is connected with the receiving end of the current transmitter, and the output end of the current transmitter is connected with the receiving end of the processing module. The current transformer collects the current of the motor stator through the current collecting terminal and then transmits the current to the current transmitter, and the current transmitter converts the current data into the current of 4-20 mA. Due to the fact that the collecting hole and the signal line exist, the installation position of the device can be adjusted according to the length of the signal line, and therefore the device is convenient to install.
Preferably, the processing module comprises an STC89C52 singlechip and a PCF8591 singlechip, a signal acquisition end of the PCF8591 singlechip is used as a receiving end of the processing module, a signal output end of the PCF8591 singlechip is connected with a signal receiving end of the STC89C52 singlechip, and a control end of the STC89C52 singlechip is connected with the display early warning module through a wiring harness.
The PCF8591 singlechip receives the converted analog signal of the current transmitter, the PCF8591 singlechip processes the analog signal into a digital signal and transmits the digital signal to the STC89C52 singlechip, the singlechip presets an execution operation program corresponding to the digital signal, the corresponding execution operation program corresponds to the jamming degree of the isolating switch, a signal of the display early warning module is output and controlled according to the execution operation program corresponding to the digital signal, the display early warning module displays the signal according to the STC89C52 singlechip, and finally the jamming degree of the isolating switch corresponding to the signal can be obtained according to the displayed signal, so that the jamming degree of the isolating switch can be automatically judged, fault leaving is reduced, maintenance efficiency is improved, and fault rate is reduced.
Preferably, the processing module comprises an STC89C52 singlechip and a PCF8591 singlechip, a signal acquisition end of the PCF8591 singlechip is used as a receiving end of the processing module, a signal output end of the PCF8591 singlechip is connected with a signal receiving end of the STC89C52 singlechip, a control end of the STC89C52 singlechip penetrates through a beam hole through a wiring harness and is connected with the display early warning module, and the STC89C52 singlechip and the PCF8591 singlechip are fixed above a heat dissipation hole of the partition plate.
Preferably, the display early warning module comprises an LED red light with a red light emitting color, an LED yellow light with a yellow light emitting color and an LED green light with a green light emitting color. Severe jamming is indicated by means of red light, slight jamming is indicated by means of yellow light, and no jamming is indicated by means of green light.
Preferably, the gas collection channel is buckled on the vent hole by self gravity, a first clamping groove is formed in the upper end face of the inner side of the shell close to the vent hole, a second clamping groove is formed in the lower end face of the outer side of the shell close to the vent hole, a first clamping block is arranged above the front end of the gas collection channel, a guide inclined plane is arranged on the first clamping block, a second clamping block is arranged below the front end of the gas collection channel, a abdicating inclined plane is arranged at the front end of the gas collection channel, the first clamping block is clamped in the first clamping groove, and the second clamping block is clamped in the second clamping groove.
The invention has the following beneficial effects: (1) the current of the motor is collected by the collection module and is transmitted to the processing module for processing, the processing module automatically generates a control signal, the display early warning module is controlled to display the jamming degree of the isolating switch, the whole process is automatic, the fault leaving is reduced, the overhauling efficiency is improved, and the fault rate is reduced; (2) the processing module and the acquisition module are isolated by the partition plate, and the spatial position is reasonably utilized, so that the overall size of the device is reduced, the cost is saved, and the device is convenient to mount; (3) through the vent holes arranged on the two sides of the shell, air in the inner cavity of the shell is convected, heat is taken away, and heat dissipation is facilitated; (4) the trumpet-shaped flaring of the gas collection channel is used for increasing the air convection, so that heat dissipation is facilitated, and meanwhile, dust is deposited through the arc-shaped channel of the gas collection channel, so that cleaning is facilitated.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention
FIG. 2 is a schematic view of a separator according to the present invention
FIG. 3 is a schematic view of the installation of the gas collecting channel of the present invention
FIG. 4 is a schematic diagram of a circuit connection of a processing module according to the present invention
Wherein: 1. The device comprises a shell 2, a current transformer 3, a current transmitter 4, a processing module 5, an LED red light 6, an LED yellow light 7, an LED green light 8, a data acquisition hole 9, a vent hole 10, a gas collection channel 11, an arc-shaped channel 12, a horn-shaped flaring 13, a heat dissipation hole 14, a wiring harness hole 15 and a partition board.
Detailed Description
Example (b):
the embodiment provides an isolator operating condition alarm device, combine fig. 1 to be a structure schematic diagram of the invention, including shell 1, be equipped with data acquisition module and processing module in the shell 1, shell 1 surface is equipped with shows early warning module, data acquisition module, processing module 4 and demonstration early warning module connect gradually, be equipped with data acquisition hole 8 on the shell 1, data acquisition module includes current transformer 2 and current transducer 3, current transformer 2's collection end has the signal line, the signal line connects in the current acquisition terminal through data acquisition hole 8, current transformer 2's output connects in current transducer 3's receiving terminal, current transducer 3's output reconnects in processing module 4's receiving terminal. The current transformer collects the current of the motor stator through the current collecting terminal and then transmits the current to the current transmitter, and the current transmitter converts the current data into the current of 4-20 mA. Due to the fact that the collecting hole and the signal line exist, the installation position of the device can be adjusted according to the length of the signal line, and therefore the device is convenient to install.
Be equipped with baffle 15 in the shell 1, baffle 15 is with 1 inside processing chambers and the collection chamber of dividing into of shell, and processing module 4 sets up at processing chambers and 15 fixed connection of baffle, and data acquisition module sets up at collection intracavity and 1 fixed connection of shell. Because processing module is the plane sheet metal, if place at the coplanar with data acquisition module and be connected again, can lead to this device whole bulky, the effect that sets up the baffle makes the baffle separate into two parts with the shell is inside, and rational utilization spatial position makes processing module set up in data acquisition module top to reduce the whole size of device, practice thrift the cost.
Referring to fig. 2, the partition 15 is provided with heat dissipation holes 13 and harness holes 14. The processing module temperature risees in the course of the work, if the temperature lasts the functioning speed that risees and can influence processing module, leads to processing module reaction slow, can burn out processing module further, sets up the louvre and can make processing module's heat give off through the louvre to reduce processing module's temperature, the effect that sets up the pencil hole is run through the baffle, realizes the wiring harness connection in treatment chamber and collection chamber.
Referring to fig. 3, the gas collecting channel 10 is fastened to the vent 9 by its own gravity, a first fastening groove 16 is disposed on the upper end surface of the inner side of the housing 1 near the vent 9, a second fastening groove 17 is disposed on the lower end surface of the outer side of the housing 1 near the vent 9, a first fastening block 18 is disposed above the front end of the gas collecting channel 10, a guiding inclined surface 21 is disposed on the first fastening block 18, a second fastening block 19 is disposed below the front end of the gas collecting channel 10, a yielding inclined surface 20 is disposed at the front end of the gas collecting channel 10, the first fastening block 18 is fastened in the first fastening groove 19, the second fastening block 19 is fastened in the second fastening groove 17, the gas collecting channel 10 is inclined at a certain angle during installation, the guiding inclined surface 21 is close to the upper surface of the vent 9, the gas collecting channel 10 moves toward the inside of the housing 1 until the yielding inclined surface 20 and the second fastening block 19 meet the meeting place of the second fastening groove 17 and the vent 9, and the gas collecting, until the first latch 18 is completely latched in the first latch groove 19, the second latch 19 is completely latched in the second latch groove 17.
The processing module 4 comprises an STC89C52 single chip microcomputer and a PCF8591 single chip microcomputer, a signal acquisition end of the PCF8591 single chip microcomputer serves as a receiving end of the processing module 4, a signal output end of the PCF8591 single chip microcomputer is connected with a signal receiving end of the STC89C52 single chip microcomputer, a control end of the STC89C52 single chip microcomputer penetrates through a beam hole 14 through a wiring harness and is connected with the display early warning module, and the STC89C52 single chip microcomputer and the PCF8591 single chip microcomputer are fixed above.
FIG. 4 is a schematic circuit connection diagram of the processing module of the present invention, wherein the analog signal input terminal AIN0 of the PCF8591 singlechip is connected with the output terminal of the current transmitter, the analog signal input terminal AIN0 of the PCF8591 singlechip is further connected with a grounding resistor R4, the grounding terminal of the current transmitter is grounded, the address terminals of the pins of the PCF8591 singlechip are grounded, the power supply terminal and the reference power supply terminal of the PCF8591 singlechip are connected to the same external power supply and are connected to one end of a capacitor C1, and the other end of C1, an internal clock selection line EXT and an analog signal ground AGND are grounded;
a data line SDA of an I2C bus of the PCF8591 singlechip is connected with a P2.1 pin of the STC89C52 singlechip, a clock line SCL of the PCF8591 singlechip is connected with a P2.2 pin of the STC89C52 singlechip, a control output end of the STC89C52 singlechip is connected with the display early warning module, wherein a P1.0 pin of the STC89C52 singlechip is connected with a cathode of an LED red lamp D1, and an anode of the LED red lamp D1 is connected with an external power supply through a resistor R1; the P1.1 pin of the STC89C52 singlechip is connected with the cathode of an LED yellow light D2, and the anode of the LED yellow light D2 is connected with an external power supply through a resistor R2; the P1.2 pin of the STC89C52 singlechip is connected with the cathode of an LED green light D3, and the anode of the LED green light D3 is connected with an external power supply through a resistor R3.
The PCF8591 singlechip receives the analog signal converted by the current transducer, the PCF8591 singlechip processes the analog signal into a digital signal and transmits the digital signal to the STC89C52 singlechip, the singlechip presets an execution operation program corresponding to the digital signal, the corresponding execution operation program corresponds to the jamming degree of the isolating switch, a signal of the display early warning module is output and controlled according to the execution operation program corresponding to the digital signal, the display early warning module displays the signal according to the STC89C52 singlechip, and finally the jamming degree of the isolating switch corresponding to the signal can be obtained according to the displayed signal, so that the jamming degree of the isolating switch can be automatically judged, fault leaving is reduced, maintenance efficiency is improved, and fault rate is reduced.
The display early warning module comprises an LED red lamp 5 with red light emitting color, an LED yellow lamp 6 with yellow light emitting color and an LED green lamp 7 with green light emitting color. Severe jamming is indicated by means of red light, slight jamming is indicated by means of yellow light, and no jamming is indicated by means of green light.
The housing 1 is provided with vent holes 9 on both sides. The ventilation holes arranged on the two sides have the effect of enabling air to convect, so that heat in the device is taken away, the temperature of the inner cavity of the shell is reduced, and heat dissipation of the device is facilitated. Be equipped with gas collection passageway 10 on ventilation hole 9, gas collection passageway 10 includes arc passageway 11 and tubaeform flaring 12, and the one end of arc passageway 11 is connected around ventilation hole 9, and tubaeform flaring 12 is connected to the other end of arc passageway 11. The effect that sets up tubaeform flaring increases the area that receives the wind, let as much as possible air flow in this device, increase the air and flow, the effect of arc passageway is isolated dust, the air is forced up lifting after entering into the arc passageway from tubaeform flaring, because dust weight is heavier than the air, consequently the dust down deposits along the arc passageway, finally stay tubaeform flaring below, as long as regularly clear up the clearance that the laying dust of tubaeform flaring below can accomplish the cost device, convenient clearance.
When the isolating switch is electrically operated, the data acquisition module acquires a motor current signal, the motor current signal is transmitted to the processing module, and the processing module controls the display early warning module to display different states according to the acquired signal, so that the jamming defect of the isolating switch transmission system is early warned, and the operation condition of the isolating switch is effectively evaluated.
Therefore, the invention has the following advantages: (1) the current of the motor is collected by the collection module and is transmitted to the processing module for processing, the processing module automatically generates a control signal, the display early warning module is controlled to display the jamming degree of the isolating switch, the whole process is automatic, the fault leaving is reduced, the overhauling efficiency is improved, and the fault rate is reduced; (2) the processing module and the acquisition module are isolated by the partition plate, and the spatial position is reasonably utilized, so that the overall size of the device is reduced, the cost is saved, and the device is convenient to mount; (3) through the vent holes arranged on the two sides of the shell, air in the inner cavity of the shell is convected, heat is taken away, and heat dissipation is facilitated; (4) the trumpet-shaped flaring of the gas collection channel is used for increasing the air convection, so that heat dissipation is facilitated, and meanwhile, dust is deposited through the arc-shaped channel of the gas collection channel, so that cleaning is facilitated.
Claims (9)
1. The utility model provides an isolator operating condition alarm device, includes shell (1), characterized by is equipped with data acquisition module and processing module in shell (1), and shell (1) surface is equipped with shows early warning module, data acquisition module, processing module (4) and show early warning module and connect gradually, shell (1) both sides are equipped with ventilation hole (9), be equipped with gas collection passageway (10) on ventilation hole (9), gas collection passageway (10) are detained including arc passageway (11) and loudspeaker form flaring (12), the one end of arc passageway (11) is put on ventilation hole (9), and loudspeaker form flaring (12) are connected to the other end of arc passageway (11).
2. The alarm device for the operation condition of the isolating switch according to claim 1, wherein a partition plate (15) is arranged in the shell (1), the partition plate (15) divides the interior of the shell (1) into a processing cavity and a collecting cavity, the processing module (4) is arranged in the processing cavity and fixedly connected with the partition plate (15), and the data collecting module is arranged in the collecting cavity and fixedly connected with the shell (1).
3. The alarm device for the operating condition of the isolating switch as claimed in claim 2, wherein the partition plate (15) is provided with a heat dissipation hole (13) and a wiring harness hole (14).
4. The isolating switch operating condition alarm device according to claim 1, wherein the shell (1) is provided with a data acquisition hole (8).
5. The isolating switch operating condition alarm device according to claim 4, wherein the data acquisition module comprises a current transformer (2) and a current transmitter (3), the acquisition end of the current transformer (2) is connected with a signal line, the signal line is connected to a current acquisition terminal through a data acquisition hole (8), the output end of the current transformer (2) is connected to the receiving end of the current transmitter (3), and the output end of the current transmitter (3) is connected to the receiving end of the processing module (4).
6. The isolating switch operating condition alarm device according to claim 1, wherein the processing module (4) comprises an STC89C52 single-chip microcomputer and a PCF8591 single-chip microcomputer, a signal acquisition end of the PCF8591 single-chip microcomputer is used as a receiving end of the processing module (4), a signal output end of the PCF8591 single-chip microcomputer is connected to a signal receiving end of the STC89C52 single-chip microcomputer, and a control end of the STC89C52 single-chip microcomputer is connected to the display early-warning module through a wiring harness.
7. The isolating switch operating condition alarm device according to claim 3, wherein the processing module (4) comprises an STC89C52 single-chip microcomputer and a PCF8591 single-chip microcomputer, a signal acquisition end of the PCF8591 single-chip microcomputer is used as a receiving end of the processing module (4), a signal output end of the PCF8591 single-chip microcomputer is connected with a signal receiving end of the STC89C52 single-chip microcomputer, a control end of the STC89C52 single-chip microcomputer is connected with the display early warning module through a wiring harness penetrating hole (14), and the STC89C52 single-chip microcomputer and the PCF8591 single-chip microcomputer are fixed above the heat dissipation hole (13).
8. The isolating switch operation condition alarm device according to claim 1, wherein the display early warning module comprises an LED red lamp (5) with a red light emitting color, an LED yellow lamp (6) with a yellow light emitting color and an LED green lamp (7) with a green light emitting color.
9. The isolating switch operating condition alarm device according to claim 1, wherein the gas collecting channel (10) is fastened to the vent hole (9) by using self gravity, a first clamping groove (16) is formed in the upper end face, close to the vent hole (9), of the inner side of the housing (1), a second clamping groove (17) is formed in the lower end face, close to the vent hole (9), of the outer side of the housing (1), a first clamping block (18) is arranged above the front end of the gas collecting channel (10), a guide inclined plane (21) is formed in the first clamping block (18), a second clamping block (19) is arranged below the front end of the gas collecting channel (10), a yielding inclined plane (20) is formed in the front end of the gas collecting channel (10), the first clamping block (18) is clamped in the first clamping groove (16), and the second clamping block (19) is clamped in the second clamping groove (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774565.8A CN110687440A (en) | 2019-08-21 | 2019-08-21 | Isolator operating condition alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774565.8A CN110687440A (en) | 2019-08-21 | 2019-08-21 | Isolator operating condition alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110687440A true CN110687440A (en) | 2020-01-14 |
Family
ID=69108372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910774565.8A Pending CN110687440A (en) | 2019-08-21 | 2019-08-21 | Isolator operating condition alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110687440A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555328U (en) * | 2009-11-05 | 2010-08-18 | 上海麦登通风工程有限公司 | Powerful exhaustion ventilator |
| CN206431258U (en) * | 2017-02-13 | 2017-08-22 | 国家电网公司 | A kind of high voltage isolator evaluation and failure diagnosis apparatus |
| CN107124291A (en) * | 2017-03-06 | 2017-09-01 | 国网上海市电力公司 | A kind of adjusting device monitoring analysis system and method based on big data |
| CN107340468A (en) * | 2016-12-02 | 2017-11-10 | 国家电网公司 | A kind of high voltage isolator detecting system |
| CN206831752U (en) * | 2017-06-28 | 2018-01-02 | 福建师范大学 | One kind energy-conservation cooling ventilation unit |
| CN207319159U (en) * | 2017-10-31 | 2018-05-04 | 广东海洋大学寸金学院 | A kind of computer radiating dustproof cabinet |
| CN109088573A (en) * | 2018-08-31 | 2018-12-25 | 国网江苏省电力有限公司徐州供电分公司 | A kind of high-pressure system disconnecting switch intelligent control system based on servo motor |
| CN109143060A (en) * | 2018-10-22 | 2019-01-04 | 西安超鹏智能科技有限公司 | A kind of disconnecting switch location status monitoring system and its monitoring method |
| CN109219295A (en) * | 2018-11-01 | 2019-01-15 | 郑州云海信息技术有限公司 | The shell and electronic equipment of a kind of electronic equipment |
| CN211718459U (en) * | 2019-08-21 | 2020-10-20 | 国网浙江省电力有限公司金华供电公司 | Isolator operating condition alarm device |
-
2019
- 2019-08-21 CN CN201910774565.8A patent/CN110687440A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555328U (en) * | 2009-11-05 | 2010-08-18 | 上海麦登通风工程有限公司 | Powerful exhaustion ventilator |
| CN107340468A (en) * | 2016-12-02 | 2017-11-10 | 国家电网公司 | A kind of high voltage isolator detecting system |
| CN206431258U (en) * | 2017-02-13 | 2017-08-22 | 国家电网公司 | A kind of high voltage isolator evaluation and failure diagnosis apparatus |
| CN107124291A (en) * | 2017-03-06 | 2017-09-01 | 国网上海市电力公司 | A kind of adjusting device monitoring analysis system and method based on big data |
| CN206831752U (en) * | 2017-06-28 | 2018-01-02 | 福建师范大学 | One kind energy-conservation cooling ventilation unit |
| CN207319159U (en) * | 2017-10-31 | 2018-05-04 | 广东海洋大学寸金学院 | A kind of computer radiating dustproof cabinet |
| CN109088573A (en) * | 2018-08-31 | 2018-12-25 | 国网江苏省电力有限公司徐州供电分公司 | A kind of high-pressure system disconnecting switch intelligent control system based on servo motor |
| CN109143060A (en) * | 2018-10-22 | 2019-01-04 | 西安超鹏智能科技有限公司 | A kind of disconnecting switch location status monitoring system and its monitoring method |
| CN109219295A (en) * | 2018-11-01 | 2019-01-15 | 郑州云海信息技术有限公司 | The shell and electronic equipment of a kind of electronic equipment |
| CN211718459U (en) * | 2019-08-21 | 2020-10-20 | 国网浙江省电力有限公司金华供电公司 | Isolator operating condition alarm device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104734042A (en) | Intelligent alternating current low-voltage distribution cabinet convenient to cool | |
| CN205212285U (en) | Energy -concerving and environment -protective type block terminal | |
| CN211718459U (en) | Isolator operating condition alarm device | |
| CN104242072B (en) | Combined type power distribution cabinet | |
| CN110687440A (en) | Isolator operating condition alarm device | |
| CN106402754A (en) | Intelligent bathroom lamp with humidity warning device | |
| CN208548592U (en) | A kind of power distribution cabinet | |
| CN106114417A (en) | The low-voltage distribution box of pure electric coach | |
| CN107257095A (en) | A kind of convenient for wiring outdoor power distribution cabinet | |
| CN111103016B (en) | High-temperature early warning device of power equipment | |
| CN111208769A (en) | Wisdom mine centralized control cabinet | |
| CN210198949U (en) | Automatic detect damaged equipment of electric power well lid | |
| CN205846498U (en) | A kind of important electric elements are with detecting distribution box in real time | |
| CN205582194U (en) | Electrified mistake grounding alarm device of 10kV high tension switchgear | |
| CN211351829U (en) | Automatic link monitoring device of electric wire netting dispatch | |
| CN212343163U (en) | Ring main unit comprehensive intelligent measurement and control device | |
| CN202887624U (en) | Intelligent light-emitting diode (LED) display screen box body | |
| CN215728554U (en) | Distribution network fault positioning and correcting device | |
| CN215343625U (en) | Control cabinet for mine card engine | |
| CN213152529U (en) | Photoelectric isolation box | |
| CN212032499U (en) | Demonstration table for electrical engineering | |
| CN215527091U (en) | Wireless intelligent display device and display equipment | |
| CN212659940U (en) | Intelligent bus duct | |
| CN211824814U (en) | Temperature monitoring device for distribution box | |
| CN207691764U (en) | A kind of filter cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |