CN104201936A - Electric motor control cabinet for pumping unit - Google Patents
Electric motor control cabinet for pumping unit Download PDFInfo
- Publication number
- CN104201936A CN104201936A CN201410425729.3A CN201410425729A CN104201936A CN 104201936 A CN104201936 A CN 104201936A CN 201410425729 A CN201410425729 A CN 201410425729A CN 104201936 A CN104201936 A CN 104201936A
- Authority
- CN
- China
- Prior art keywords
- switch
- chamber
- control cabinet
- motor control
- oil pumper
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an electric motor control cabinet for a pumping unit. The electric motor control cabinet for the pumping unit comprises a weak current chamber at the upper layer and a glass reinforced plastic casing of a strong current chamber at the lower layer; a remote control receiving module, a short message sending module, a signal circuit transformer, a low-pressure remote transmission system control switch and a single well signal collection device are arranged inside the weak current chamber; a main power switch, an alarm bell, an alternating current contactor, a control loop switch, an electric motor protector, a capacitor switch, a lightning arrester and a capacitor are arranged inside the strong current chamber. The electric motor control cabinet for the pumping unit has the advantages of having electric isolation and electric motor protection functions of a traditional control cabinet and remote control oil well start and stop and fault short-message warning functions, overcoming the disadvantage that a metal outer casing control cabinet is poor in alkali-resisting and corrosion resistant capability and being light in weight, high in intensity and strong in corrosion resistance capability.
Description
Technical field
The present invention relates to electric machines control technology field, particularly a kind of motor control cabinet of oil pumper.
Background technology
The production of oil pumper just be unable to do without motor control cabinet.Motor control cabinet generally adopts metal shell at present, particularly be positioned at the control cubicle of coastal area because its Salt And Alkali Tolerance, resistance to corrosion are poor, general useful life is at 2-3, rate when changing frequently motor control cabinet and not only having improved production cost and also reduced oil well operation.And motor control cabinet is arranged on open air, while starting oil well, need contacting metal shell, the in the situation that of sleet, humidity, there is Danger Electric shock risk in start and stop oil pumper manually.Simultaneously because oil pumper must arrive frequent could discovery by patrol personnel when the fault; sometimes oil pumping machine fault is shut down, is sometimes operated with failure for a long time; can not find in time, likely cause motor to burn or down-hole fault, cause larger economic loss.Therefore, how improving the useful life of motor control cabinet, how to improve the fail safe that motor control cabinet is used, and how can find in time oil pumping machine fault operation and disorderly closedown, is the problem of needing solution in field produces badly.
Summary of the invention
The object of this invention is to provide a kind of can remote control start and stop oil well and possess fault SMS alarm function and corrosion resistance strong and use the motor control cabinet of safe oil pumper.
For solving the problems of the technologies described above, the invention provides a kind of motor control cabinet of oil pumper, comprise that upper strata is that light current Shi He lower floor is the fiberglass casing of forceful electric power chamber, indoor remote control reception module, SMS transmission module, signal circuit transformer, low pressure remote transmitting system control switch and the individual well signal pickup assembly of being provided with of described light current, indoor total power switch, warning alarm bell, A.C. contactor, control loop switch, motor protector, capacitor switch, lightning arrester, current transformer and the capacitor of being provided with of described forceful electric power, described casing side is provided with workover treatment mains switch and socket, on the chamber door of described casing, be provided with scram button, start button and stop button, general supply connection workover treatment suitable for reading mains switch and low pressure remote transmitting system control switch, the end opening of described general supply connects total power switch, the end opening of described total power switch links described A.C. contactor, control loop switch and capacitor switch and lightning arrester, the end opening of described A.C. contactor connects motor by motor protector, the end opening of described control loop switch connects described scram button, start button, stop button and signal circuit transformer, the end opening of described capacitor switch connects capacitor, described workover treatment mains switch is connected with described socket, described warning alarm bell is connected with described A.C. contactor, described low pressure remote transmitting system control switch connects described signal circuit transformer and described current transformer, described signal circuit transformer connects described remote control reception module and SMS transmission module, described current transformer connects described individual well signal pickup assembly.
Further, described light current chamber is former and later two chambers by the fiberglass baffle for separating vertically arranging, and is provided with described remote control reception module, SMS transmission module and signal circuit transformer on the dividing plate of described light current chamber front chamber; On the dividing plate of described light current chamber rear chamber, be provided with described low pressure remote transmitting system control switch and individual well signal pickup assembly.
Further, the remote control reception of described remote control reception module and transtation mission circuit all adopt 315M wireless module.
Further, described SMS transmission module is to realize the bi-directional communication modules of short message receiving-transmitting, initiatively sends note realize remote alarms by ATMEGA16 control.
Further, on the dividing plate of described light current chamber rear chamber, be provided with the first terminal row and the second terminal board.
Further, described forceful electric power chamber is former and later two chambers by the fiberglass baffle for separating vertically arranging, and is provided with described total power switch, warning alarm bell, A.C. contactor, control loop switch, motor protector and capacitor switch on the dividing plate of described forceful electric power chamber front chamber; On the dividing plate of described forceful electric power chamber rear chamber, be provided with described lightning arrester, current transformer and capacitor.
Further, on the dividing plate of described forceful electric power chamber front chamber, be provided with wire hole and entrance hole.
Further, on the chamber door of described casing, be provided with anti-theft lock.
Further, described each electric elements are fixed on described casing by set bolt, and described set bolt adopts PUR anti-corrosion treatment.
Further, the method for anticorrosion treatment of described set bolt comprises:
1) bar-shaped EVA PUR is put into hot melt gun;
2) 70-84 ℃ of PUR melts;
3) hot-melt is put on and needs around corrosion-resistant bolt;
4) through 8-12 PUR second, solidify.
The motor control cabinet of oil pumper provided by the invention; be provided with remote control reception module and SMS transmission module; start and stop that can telemotor by remote control reception module; increased the fail safe of start and stop oil wells; by SMS transmission module, can there is fault SMS alarm function; failure operation and the disorderly closedown that can find in time oil pumper, improved oil pumper overhaul efficiency, rate while having increased oil pumper operation.In addition, the motor control cabinet of oil pumper provided by the invention, what its casing and casing internal partition adopted is glass-reinforced plastic material, with the comparison of metal shell control cubicle, because of the non-conductive property of glass-reinforced plastic material, thereby increased the fail safe of motor control cabinet in contact use procedure, and, because corrosion resistance and the Salt And Alkali Tolerance performance of glass-reinforced plastic material are stronger, thereby extended the useful life of motor control cabinet, be often 15 years its useful life.
Accompanying drawing explanation
Fig. 1 is the front view of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 2 is the rearview of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 3 is the end view of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 4 is the cabinet door schematic diagram of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 5 is the electrical schematic of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 6 is the remote control circuitry figure of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 7 is the remote control reception terminal circuit figure of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 8 is the SMS transmission module circuit diagram of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Fig. 9 is the note detection signal transmission circuit figure of the motor control cabinet of the oil pumper that provides of the embodiment of the present invention.
Embodiment
Referring to Fig. 1, the motor control cabinet of a kind of oil pumper that the embodiment of the present invention provides, comprise fiberglass casing 1, casing 1 is divided into two-layer up and down, upper strata is light current chamber 2, lower floor is forceful electric power chamber 3, and the interior fiberglass dividing plate 13 that is vertically provided with of casing 1 is divided into respectively former and later two chambers by light current chamber 2 and forceful electric power chamber 3; In the front chamber of light current chamber 2, be provided with remote control reception module 10, SMS transmission module 11 and signal circuit transformer 12; In the front chamber of forceful electric power chamber 3, be provided with and be provided with total power switch 4, warning alarm bell 5, A.C. contactor 6, control loop switch 7, motor protector 8 and capacitor switch 9.
Referring to Fig. 2, in the rear chamber of light current chamber 2, be provided with low pressure remote transmitting system control switch 14, individual well signal pickup assembly 17, terminal board 18 and terminal board 19; In the rear chamber of forceful electric power chamber 3, be provided with lightning arrester 15, wire hole 16, current transformer 20, entrance hole 21 and capacitor 22.
Referring to Fig. 3, the side of casing 1 is provided with workover treatment mains switch 23 and socket 24.
Referring to Fig. 4, fiberglass casing, is also provided with scram button 25, start button 26, anti-theft lock 27 and stop button 28 on 1 chamber door.
Wherein, it is suitable for reading that workover treatment mains switch 23 and low pressure remote transmitting system control switch 14 are connected general supply, the end opening of general supply connects total power switch 4, the end opening of total power switch 4 links lightning arrester 15, A.C. contactor 6, control loop switch 7 and capacitor switch 9, the end opening of A.C. contactor 6 connects motor by motor protector 8, the end opening of control loop switch 7 connects scram button 25, start button 26, stop button 28 and signal circuit transformer 12, the end opening of capacitor switch 9 connects capacitor 22, low pressure remote transmitting system control switch 14 connects signal circuit transformer 12, signal circuit transformer 12 connects remote control reception module 10 and SMS transmission module 11, workover treatment mains switch 23 is connected with socket 24, warning alarm bell 5 is connected with A.C. contactor 6, current transformer 20 connects low pressure remote transmitting system control switch 14, for low-voltage remote signal transmission, individual well signal pickup assembly 17 is connected with current transformer 20.
Wherein, what the remote control reception of remote control reception module 10 and transtation mission circuit all adopted is 315M wireless module, can receive the start and stop that external signal is controlled motor.
SMS transmission module 11 is to realize the bi-directional communication modules of short message receiving-transmitting, initiatively sends note realize remote alarms to specified mobile phone number when fault by ATMEGA16 control.
Wherein, fiberglass casing 1 and fiberglass dividing plate 13 are to adopt hot compression molding technology to produce, and that the cabinet making like this has advantages of is lightweight, intensity is high, resistance to corrosion is strong.Fiberglass dividing plate 13 is fixed on inside, casing chamber for related electric element is installed.Each electric elements are fixed on the fiberglass dividing plate 13 of casing 1 inside by set bolt, on the sidewall of casing 1 or the chamber door of casing 1.The set bolt of fixing each electric elements adopts PUR anti-corrosion treatment, its preservative treatment process is: 1. bar-shaped EVA PUR is put into hot melt gun, 2. 70-84 ℃ of PUR melts, and 3. hot-melt is put on and needs around corrosion-resistant bolt, 4. through 8-12 PUR second, solidifies.Set bolt corrosion resistance after such processing is strong, quick detachable, is convenient to the maintenance maintenance of control cubicle.
Referring to Fig. 5, in electrical schematic diagram, QS represents that battery main switch 4, QS1 represent that workover treatment mains switch 23, QS2 represent that control loop switch 7, QS4 represent low pressure remote transmitting system control switch, KM1 represents A.C. contactor 6, and FS represents motor protector 8, and C represents capacitor 22; F represents lightning arrester 15, and S1, KM2 represent start button 26, for actuating motor, controls; S2, KM3 represent stop button 28, for the control that stops of motor.It is suitable for reading that workover treatment mains switch 23 and low pressure remote transmitting system control switch 14 are connected general supply, 23 gang sockets 24 of workover treatment mains switch, and the end opening of general supply connects battery main switch 4.The end opening of battery main switch 4 connects the main contact of A.C. contactor 6, and motor protector 8 penetrates A.C. contactor 6 to the line of the first terminal row the 18 and second terminal board 19.Capacitor 22 is connected with capacitor switch 9, and lightning arrester 15 is connected on the line between the end opening of battery main switch 4 and A.C. contactor 6 suitable for reading; The power supply of start button 26 and stop button 28 comes to control loop switch 7, and control loop switch 7 connects A.C. contactor 6 for control loop; The control circuit 2# line of the 11# line of motor protector 8 and motor is connected with warning alarm bell 5.The connection battery main switch 4 suitable for reading of low pressure remote transmitting system control switch 14 suitable for reading, the end opening of low pressure remote transmitting system control switch 14 connects signal circuit transformer 12 summation current transformers 20; The end opening of signal circuit transformer 12 connects the first terminal row 18, and the first terminal row 18 connects remote control reception module 10 and SMS transmission module 12.The end opening of the low pressure remote transmitting system control switch 14 that the K1 terminal of current transformer 20 comes, the K1 of current transformer 20, K2 terminal connect the second terminal board 19.The end opening of the second terminal board 19 connects individual well signal pickup assembly 17.
Referring to Fig. 6 and Fig. 7, the circuit of remote control reception module 10 adopts 315M wireless module, and in Fig. 7, KM2 normally opened contact is in parallel with S1, KM3 normally-closed contact is connected with S2, reach the object of remote control start and stop oil well, remote control reception and transmission range is controlled in 10m, guarantees start stop operation in well site.Note transtation mission circuit module is installed in control cubicle; adopt ATMEGA16 module, at motor protector, have overload to be transferred to ATMEGA16 module 36# terminal, be disconnectedly transferred to mutually ATMEGA16 module 35# terminal, cross and when under voltage is transferred to ATMEGA16 module 34# terminal fault, send note and report to the police to specified mobile phone number.
Referring to Fig. 6, the course of work of remote controller is: press SB5 button, single-chip microcomputer PT2262,315M radio receiving transmitting module simultaneously electric, connect PT2262 the 10th pin simultaneously, PT2262 coding 17 pin are exported to 315M module, 315M module wireless signal emission; Unclamp SB5 button, PT2262315M module is dead electricity simultaneously, and circuit quits work.Press SB6 button, PT2262,315M module simultaneously electric, connect PT2262 the 11st pin simultaneously, PT2262 coding 17 pin are exported to 315M module, 315M module wireless signal emission; Unclamp SB6 button, PT2262315M module is dead electricity simultaneously, and circuit quits work.
Referring to Fig. 7, remote-control receiving circuit 315M module receives signal and passes to single-chip microcomputer PT2272 and decode, the signal being gone out by PT2262 the 11st human hair combing waste through decoding after by PT2272 the 11st pin output signal, the signal being gone out by PT2262 the 10th human hair combing waste through decoding after by PT2272 the 10th pin output signal, output signal is high level, output signal is to triode 9014 conductings after 10K resistance, and KM contactor moves.315M module receives signal terminating, the PT2272 not output signal that quits work, and triode 9014 becomes cut-off from conducting, and contactor disconnects.
Referring to Fig. 8 and Fig. 9, SMS module circuit SMS module is to realize the bi-directional communication modules of short message receiving-transmitting, by ATMEGA16, is controlled and is initiatively sent note, realizes remote alarms.Also can receive note transfer control signal and realize active remote control detection to ATMEGA16.The 3rd pin of SMS module is that signal receives pin, and the 4th pin is signal output pin.PD1 (10) output pin of corresponding atm EGA16 and PD0 (9) receive pin respectively, and SMS module need be equipped with the SIM card of SMS.
First to ATMEGA16, utilize software to programme, can realize needed adjusting function.The PA1 pin pipe 36 that can send a signal to ATMEGA16 when motor protector detects overload signal, ATMEGA16 PD1 pin sends corresponding signal to SMS module, and SMS module sends specifies alarming short message to specified mobile phone number.The PA2 pin pipe 35 that can send a signal to ATMEGA16 when motor protector detects disconnected phase signals, ATMEGA16 PD1 pin sends corresponding signal to SMS module, and SMS module sends specifies alarming short message to specified mobile phone number.The PA3 pin pipe 34 that can send a signal to ATMEGA16 when motor protector detects over voltage signal, ATMEGA16 PD1 pin sends corresponding signal to SMS module, and SMS module sends specifies alarming short message to specified mobile phone number.
The motor control cabinet of oil pumper provided by the invention; not only possess electrical isolation and the motor protection effect of general control cabinet; also possess remote control start and stop oil well and fault SMS alarm function; simultaneously can also overcome metal shell control cubicle Salt And Alkali Tolerance and the poor shortcoming of resistance to corrosion, have advantages of lightweight, intensity is high and resistance to corrosion is strong.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to example, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. the motor control cabinet of an oil pumper, it is characterized in that: comprise that upper strata is that light current chamber (2) and lower floor are the fiberglass casing (1) of forceful electric power chamber (3), is provided with remote control reception module (10), SMS transmission module (11), signal circuit transformer (12), low pressure remote transmitting system control switch (14) and individual well signal pickup assembly (17) in described light current chamber (2), in described forceful electric power chamber (3), be provided with total power switch (4), warning alarm bell (5), A.C. contactor (6), control loop switch (7), motor protector (8), capacitor switch (9), lightning arrester (15), current transformer (20) and capacitor (22), described casing (1) side is provided with workover treatment mains switch (23) and socket (24), on the chamber door of described casing (1), be provided with scram button (25), start button (26) and stop button (28), it is suitable for reading that described workover treatment mains switch (23) and low pressure remote transmitting system control switch (14) are connected general supply, the end opening of described general supply connects described total power switch (4), the end opening of described total power switch (4) links described A.C. contactor (6), control loop switch (7), capacitor switch (9) and lightning arrester (15), the end opening of described A.C. contactor (6) connects motor by motor protector (8), the end opening of described control loop switch (7) connects described scram button (25), start button (26), stop button (28) and signal circuit transformer (12), the end opening of described capacitor switch (9) connects described capacitor (22), described workover treatment mains switch (23) is connected with described socket (24), described warning alarm bell (5) is connected with described A.C. contactor (6), described low pressure remote transmitting system control switch (14) connects described signal circuit transformer (12) and described current transformer (20), described signal circuit transformer (12) connects described remote control reception module (10) and SMS transmission module (11), described current transformer (20) connects described individual well signal pickup assembly (17).
2. the motor control cabinet of oil pumper according to claim 1, it is characterized in that: described light current chamber (2) is divided into former and later two chambers by the fiberglass dividing plate (13) vertically arranging, on the dividing plate (13) of described light current chamber (2) front chamber, be provided with described remote control reception module (10), SMS transmission module (11) and signal circuit transformer (12); On the dividing plate (13) of described light current chamber (2) rear chamber, be provided with described low pressure remote transmitting system control switch (14) and individual well signal pickup assembly (17).
3. the motor control cabinet of oil pumper according to claim 2, is characterized in that: remote control reception and the transtation mission circuit of described remote control reception module (10) all adopt 315M wireless module.
4. the motor control cabinet of oil pumper according to claim 2, is characterized in that: described SMS transmission module (11) is the bi-directional communication modules that can realize short message receiving-transmitting, initiatively sends note realize remote alarms by ATMEGA16 control.
5. the motor control cabinet of oil pumper according to claim 2, is characterized in that: on the dividing plate (13) of described light current chamber (2) rear chamber, be provided with the first terminal row (18) and the second terminal board (19).
6. the motor control cabinet of oil pumper according to claim 1, it is characterized in that: described forceful electric power chamber (3) is divided into former and later two chambers by the fiberglass dividing plate (13) vertically arranging, on the dividing plate (13) of described forceful electric power chamber (3) front chamber, be provided with described total power switch (4), warning alarm bell (5), A.C. contactor (6), control loop switch (7), motor protector (8) and capacitor switch (9); On the dividing plate (13) of described forceful electric power chamber (3) rear chamber, be provided with described lightning arrester (15), current transformer (20) and capacitor (22).
7. the motor control cabinet of oil pumper according to claim 3, is characterized in that: on the dividing plate (13) of described forceful electric power chamber (3) front chamber, be provided with wire hole (16) and entrance hole (21).
8. the motor control cabinet of oil pumper according to claim 1, is characterized in that: on the chamber door of described casing (1), be provided with anti-theft lock (27).
9. according to the motor control cabinet of the oil pumper described in claim 1-8 any one, it is characterized in that: it is upper that described each electric elements are fixed on described casing (1) by set bolt, and described set bolt adopts PUR anti-corrosion treatment.
10. the motor control cabinet of oil pumper according to claim 9, is characterized in that: the anti-corrosive treatment method of described set bolt comprises:
1) bar-shaped EVA PUR is put into hot melt gun;
2) 70-84 ℃ of PUR melts;
3) hot-melt is put on and needs around corrosion-resistant bolt;
4) through 8-12 PUR second, solidify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425729.3A CN104201936B (en) | 2014-08-26 | 2014-08-26 | The motor control cabinet of oil pumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425729.3A CN104201936B (en) | 2014-08-26 | 2014-08-26 | The motor control cabinet of oil pumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104201936A true CN104201936A (en) | 2014-12-10 |
| CN104201936B CN104201936B (en) | 2016-08-31 |
Family
ID=52087180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410425729.3A Active CN104201936B (en) | 2014-08-26 | 2014-08-26 | The motor control cabinet of oil pumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104201936B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718222Y (en) * | 2004-08-11 | 2005-08-17 | 张守松 | Remote-control lifting and stopping apparatus for artificially lifted well |
| CN2829164Y (en) * | 2005-11-01 | 2006-10-18 | 张树起 | Outdoor drawer type beam-pumping unit control box |
| CN202197014U (en) * | 2011-09-14 | 2012-04-18 | 李东波 | Static compensation type control cabinet of oil-pumping machine |
| US20120259475A1 (en) * | 2011-04-06 | 2012-10-11 | Michael Scharnick | Lock-Out, Tag-Out System Using Safety Programmable Logic Controller |
| CN203350640U (en) * | 2013-05-31 | 2013-12-18 | 洛阳华明变压器有限公司 | Non-contact control cabinet of pumping unit |
-
2014
- 2014-08-26 CN CN201410425729.3A patent/CN104201936B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718222Y (en) * | 2004-08-11 | 2005-08-17 | 张守松 | Remote-control lifting and stopping apparatus for artificially lifted well |
| CN2829164Y (en) * | 2005-11-01 | 2006-10-18 | 张树起 | Outdoor drawer type beam-pumping unit control box |
| US20120259475A1 (en) * | 2011-04-06 | 2012-10-11 | Michael Scharnick | Lock-Out, Tag-Out System Using Safety Programmable Logic Controller |
| CN202197014U (en) * | 2011-09-14 | 2012-04-18 | 李东波 | Static compensation type control cabinet of oil-pumping machine |
| CN203350640U (en) * | 2013-05-31 | 2013-12-18 | 洛阳华明变压器有限公司 | Non-contact control cabinet of pumping unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104201936B (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103280094A (en) | Lamp type infrared repeater system | |
| CN205158577U (en) | High tension transmission line prevents outer broken warning system | |
| CN104183108B (en) | SF6Switch alarm and block signal radio transmitting device | |
| CN101149861A (en) | Electric power facilities anti-theft radio network alarming system | |
| CN205282920U (en) | Safe low -voltage distribution cabinet | |
| CN205068733U (en) | Network communication bus alarm system | |
| CN105225902A (en) | Intelligence fuse switch | |
| CN203399223U (en) | Video monitoring system of direct current power transmission system | |
| CN104201936A (en) | Electric motor control cabinet for pumping unit | |
| CN203204415U (en) | Novel remote alarming control system for high voltage converter | |
| CN203086245U (en) | Plug-and-play type movable combiner box monitoring device | |
| CN103219803A (en) | Switch cabinet monitoring system | |
| CN202524163U (en) | Intelligent monitoring system for low-voltage power distribution | |
| CN105182165A (en) | System of mobile power supply ground wire connection state real-time monitoring and fault positioning | |
| CN104408842B (en) | Novel guard against theft and alarm system for wind driven generator | |
| CN109215281A (en) | A kind of communication base station fire alarm installation | |
| CN205209594U (en) | Water level monitoring device | |
| CN205027847U (en) | System for remove power supply ground connection state real -time supervision and fault locating | |
| CN203966273U (en) | A kind of intelligent substation safety device | |
| CN201369604Y (en) | Fire fighting power wireless monitoring device | |
| CN103647943A (en) | Comprehensive power transmission line video monitoring device based on LTE technology | |
| CN105978157A (en) | Integrated switch cabinet monitoring terminal | |
| CN202395357U (en) | Electricity-saving intelligent box type transformer substation based on Internet of things | |
| CN103402083A (en) | Video monitoring method and video monitoring system of direct-current power transmission system | |
| CN202221528U (en) | Intelligent monitoring system of switching station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |