CN207379659U - For the pressure on-line monitoring system of 750kV high-tension insulating bushings - Google Patents
For the pressure on-line monitoring system of 750kV high-tension insulating bushings Download PDFInfo
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- CN207379659U CN207379659U CN201721310515.7U CN201721310515U CN207379659U CN 207379659 U CN207379659 U CN 207379659U CN 201721310515 U CN201721310515 U CN 201721310515U CN 207379659 U CN207379659 U CN 207379659U
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- tension insulating
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Abstract
The utility model discloses a kind of pressure on-line monitoring systems for 750kV high-tension insulating bushings, and it includes fuel outlets that is being arranged on high-tension insulating bushing bottom sides and being connected with high-tension insulating bushing inside；One threeway is installed on the fuel outlet；One entrance of threeway is connected with the fuel outlet, is separately installed with pressure transmitter in two outlets of threeway and is drawn down-sampling pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；It is equipped with to switch entrance in the threeway and two exports the switch valve being respectively turned on；The signal of the pressure transmitter is communicated by communication module and in-site collecting device；The in-site collecting device is communicated by communication device and background computer；The in-site collecting device includes controller, display, alarm and the wireless communication module for being communicated with background computer；The controller is connected with the display, alarm and wireless communication module.
Description
Technical field
It is exhausted specifically for 750kV high pressures the utility model is related to the pressure on-line monitoring system of 750kV high-tension insulating bushings
The pressure monitor of the fluid of edge inside pipe casing.
Background technology
Bushing for transformer is the important component of transformer, and inside transformer high and low pressure lead is guided to oil by it
Outside case, both insulation against ground as lead also play the effect of anchor leg.Therefore, it must have defined electrical
Intensity and enough mechanical strengths.Bushing for transformer is also one of transformer current carrying element simultaneously, it is necessary to have good
Thermal stability, the long-term fever that operating current generates when can bear transformer normal operation and moment mistake when passing through short circuit current flow
Heat.If bushing for transformer existing defects break down, it will directly jeopardize the safe and stable operation of transformer.If absolutely
Edge casing breaks down, and medium temperature will raise, and oil pressure will generate variation (physics law for meeting mechanics) therewith, so
The pressure change that insulation oil pressure on-line monitoring will be directly inside consersion unit is installed additional in insulating sleeve end, for operations staff
The pressure medium periodic data support of equipment is provided, personnel convenient to overhaul prejudge the failure of high-tension insulating bushing.
In actual motion, there is Decrepitation Phenomena on 750kV high-tension insulating bushings, rupture reasons are oil by analysis
Hydrogen content and acetylene content in liquid increase；Therefore, in order to avoid explosion, the fluid in high-tension insulating bushing is regularly taken to make
It is detected for oil sample, this process is very passive, it is necessary to have a power failure, it is necessary to the substantial amounts of working time；
By our analyses to actual explosion process, discovery bursts early period, pressure and temperature inside high-tension insulating bushing
Degree can raise, the discovery defect that this elevation process can be very instant if being monitored, and eliminate defect.
Utility model content
The technical problem to be solved by the utility model is to the deficiencies in for the above-mentioned prior art, provide one kind and are used for
The pressure on-line monitoring system of 750kV high-tension insulating bushings can monitor the oil liquid pressure inside high-tension insulating bushing in real time,
Immediately find defect, eliminate defect, while also with very easily oil sample gathers structure.
In order to achieve the above object, the utility model is achieved using following technical scheme：
For the pressure on-line monitoring system of 750kV high-tension insulating bushings, fluid is filled with inside high-tension insulating bushing,
Include fuel outlet that is being arranged on high-tension insulating bushing bottom sides and being connected with high-tension insulating bushing inside；On the fuel outlet
One threeway is installed；One entrance of threeway is connected with the fuel outlet, and pressure change is separately installed in two outlets of threeway
It send device and draws down-sampling pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；
It is equipped with to switch entrance in the threeway and two exports the switch valve being respectively turned on；
The signal of the pressure transmitter is communicated by communication module and in-site collecting device；
The in-site collecting device is communicated by communication device and background computer；
The in-site collecting device includes controller, display, alarm and the channel radio for being communicated with background computer
Interrogate module；The controller is connected with the display, alarm and wireless communication module；The in-site collecting device is also associated with
Power module；The in-site collecting device is also comprising the environment temperature sensor and ambient humidity sensor being connected with controller.
A kind of preferred embodiment as the utility model：Top is provided at the top of the high-tension insulating bushing to press
Cover, top grading shield is interior to be filled with fluid, and liquid level gauge is equipped on the top grading shield；The housing side of the liquid level gauge is opened
Equipped with for assembling the casing of wireless pressure transmitter；The wireless pressure transmitter and the in-site collecting device wireless telecommunications.
A kind of preferred embodiment as the utility model：The wireless pressure transmitter, pressure transmitter include
Shell, the bottom of shell set connector, and the inside of shell is equipped with wiring board and wire connection terminal, communication mould is connected on wiring board
Block, temperature and pressure signal processing module, power supply；Pressure sensor and temperature sensor are housed in the connector；The pressure
Sensor, temperature sensor are connected by wiring board with temperature and pressure signal processing module；
The communication module of the wireless pressure transmitter is the communication module of wireless telecommunications；The communication of the pressure transmitter
Module is wireless telecommunications or the communication module of wire communication；The wireless pressure transmitter is equipped with antenna, antenna on the shell
Connect with wire connection terminal；The power supply of the wireless pressure transmitter is the battery covered after shell.
A kind of preferred embodiment as the utility model：The wireless pressure transmitter, pressure transmitter also include
There is the dial plate set on the shell, be provided with display window on dial plate, corresponding, the wiring board is also associated with display module.
A kind of preferred embodiment as the utility model：The switch valve is motor-driven valve；The control of the motor-driven valve
Molding block is connected with the controller of in-site collecting device；
Alternatively, the switch valve is hand-operated valve, rotating mark is provided on the valve handle of the hand-operated valve.
A kind of preferred embodiment as the utility model：The in-site collecting device includes babinet and case lid, babinet bottom
Portion sets to penetrate the lead-in line joint of inlet wire and the outlet joint for being pierced by outlet；The tank surface is provided with main aobvious
Display screen, switch, environment temperature display screen and ambient humidity display screen；The environment temperature display screen and ambient humidity display screen are
Digital imaging tube display screen；The casing top sets radio transmission antenna；The alarm is audible-visual annunciator；It is described on the spot
Collector includes 1 road moisture signal, 1 road temperature signal；2 tunnel alarm signals；1 tunnel, 485 remote transfer signal；Wireless communication module uses
433MHz zigbee are wirelessly transferred.
A kind of preferred embodiment as the utility model：The controller of the in-site collecting device includes amplifying circuit mould
Block, arm processor, digital analog converter, voltage current adapter and electric current galvanostat；Controller senses environmental pressure
The signal that device, ambient humidity sensor transmit carries out signal amplification by built-in amplification circuit module, and amplified signal leads to
The arm processor is crossed to be calculated；The signal data being calculated is converted into voltage signal by digital analog converter, so
Current signal is changed by the voltage current adapter afterwards, current signal after electric current galvanostat by passing through in-site collecting device
Communication module transmission.
A kind of preferred embodiment as the utility model：The pressure transmitter uses range as 0~0.5MPa, essence
It spends for 0.1 grade, absolute pressure transducer of the temperature at -40~80 degree；The babinet of the in-site collecting device is water-proof type aluminium casting machine
Case.
A kind of preferred embodiment as the utility model：The connecting line of the pressure transmitter and in-site collecting device is
Teflon lead；The antenna of the wireless pressure transmitter is Teflon antenna.
The utility model advantageous effect is：
The disclosed pressure on-line monitoring system for being used for 750kV high-tension insulating bushings of the utility model, comprising being arranged on height
Fuel outlet that is pressing insulating sleeve bottom sides and being connected with high-tension insulating bushing inside；One three is installed on the fuel outlet
It is logical；One entrance of threeway is connected with the fuel outlet, under being separately installed with pressure transmitter in two outlets of threeway and draw
Sampling pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；Pressure transmitter is pressed for gathering
Then pressure signal is transferred to in-site collecting device by force signal；In-site collecting device carries out live display, alarm and is counted to backstage
Calculation machine transmits；Background computer is located at the monitoring room of substation；Therefore, entire pressure monitor is real time and on line monitoring, very in fact
With convenient so that defect early stage finds immediately；Draw down-sampling pipe and Sampler valves setting cause fluid acquisition position be located at compared with
Low position so that fluid acquisition is more convenient.
The in-site collecting device of the utility model includes controller, display, alarm and for being communicated with background computer
Wireless communication module；The controller is connected with the display, alarm and wireless communication module；The in-site collecting device
It is also associated with power module；The in-site collecting device is also passed comprising the environment temperature sensor and ambient humidity being connected with controller
Sensor；In-site collecting device can carry out relay transmission, while also monitor the temperature and humidity at scene, provide comprehensive monitoring letter
Breath；
To sum up, the utility model can monitor the pressure in insulating sleeve in real time, can pass through pressure change at the first time
It finds defect, avoids further endangering；The utility model can also be in relatively low position (generally, fuel outlet is located at ground
4 meters of face or more, sampling valve can accomplish the position consistent with operating personnel's height on ground by drawing down-sampling pipe) carry out oil sample
Acquisition；Therefore, the utility model exists effectively and long-pending in the security risk for monitoring and preventing 750kV high-pressure insulating ring pipe explosions
The value of pole.
Description of the drawings
Fig. 1 is a kind of overall structure diagram of specific embodiment of the utility model；
Fig. 2 is partial enlarged view at the A of Fig. 1；
Fig. 3 is a kind of structure diagram of preferred embodiment on the insulating sleeve top of the utility model；
Fig. 4 is a kind of structure diagram of specific embodiment of the in-site collecting device of the utility model；
Fig. 5 is a kind of schematic block circuit diagram of specific embodiment of the in-site collecting device of the utility model；
Fig. 6 is a kind of structure diagram of specific embodiment of the pressure transmitter of the utility model；
Fig. 7 is a kind of schematic block circuit diagram of specific embodiment of the pressure transmitter of the utility model.
Reference sign：
1- insulating sleeves, 2- fuel outlets, 3- pressure transmitters, 4- threeways, 5- draw down-sampling pipe, and 6- Sampler valves, 7- is just
Ground collector, 8- communication devices, 9- background computers, 10- switch valves, 11- tops grading shield, 12- liquid level gauges, 13- is wireless
Pressure transmitter, 14- extraction wires；
301- shells, 302- dial plates, 303- connectors, 304- pressure sensors, 305- temperature sensors, 306- antennas,
307- communication modules, 308- wire connection terminals, 309- power supplys, 310- wiring boards, 311- display modules, at 312- temperature, pressure signals
Manage module；
701- case lids, 702- babinets, 703- switches, 704- environment temperature display screens, 705- ambient humidity display screens, 706-
Radio transmission antenna, 707- main displays, 708- outlet joints, 709- lead-in line joints, 711- alarms, 712- controllers,
713- displays, 714- wireless communication modules, 715- ambient humidity sensors, 716- environment temperature sensors.
Specific embodiment
Specific embodiment of the present invention is described with reference to the accompanying drawings and embodiments：
As shown in Fig. 1~7, it illustrates specific embodiment of the present utility model, as shown in the figure, the utility model discloses
The pressure on-line monitoring system for 750kV high-tension insulating bushings, the inside of high-tension insulating bushing 1 is filled with fluid, comprising setting
Put in the high-tension insulating bushing bottom sides and fuel outlet 2 with being connected inside high-tension insulating bushing；It is installed on the fuel outlet
One threeway 4；One entrance of threeway is connected with the fuel outlet, and pressure transmitter is separately installed in two outlets of threeway
3 and draw down-sampling pipe 5；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves 6 of down-sampling pipe；
It is equipped with to switch entrance in the threeway and two exports the switch valve 10 being respectively turned on；
The signal of the pressure transmitter is communicated by communication module 307 and in-site collecting device 7；
The in-site collecting device is communicated by communication device 8 and background computer 9；Background computer is generally located on monitoring
Room can control the data of insulating sleeve in real time in monitoring room by the operation of operator on duty.
The in-site collecting device includes controller 712, display 713, alarm 711 and for being communicated with background computer
Wireless communication module 714；The controller is connected with the display, alarm and wireless communication module；It is described to adopt on the spot
Storage is also associated with power module；The in-site collecting device is also comprising the environment temperature sensor 704 and ring being connected with controller
Border humidity sensor 705.
Preferably, as shown in the figure：Top grading shield 11 is provided at the top of the high-tension insulating bushing, in the grading shield of top
Filled with fluid, liquid level gauge 12 is installed on the top grading shield；The housing side of the liquid level gauge offers to assemble
The casing of wireless pressure transmitter 13；The wireless pressure transmitter and the in-site collecting device wireless telecommunications.The present embodiment exists
There are also installed pressure transmitters at the top of insulating sleeve；The purpose that wireless pressure transmitter is set at the top of insulating sleeve is to keep away
Exempt from wiring interference, the wiring security risk of 750kV high pressure extraction wires position；So that wireless pressure transmitter has stable work
Process；Thus, monitor pressure (and temperature of preferred embodiment) simultaneously up and down, reliable data are capable of providing, i.e.,
Shi Kexue accurately has found defect, avoids losing.Casing is made on the housing of liquid level gauge, the casing and the oil in the grading shield of top
Liquid connects, and pressure is gathered after installing wireless pressure transmitter.Liquid level gauge uses common floating ball structure；One end of floating ball is placed in oil
In liquid, the floating ball other end is rotated by the lifting of floating ball, and rotation process drives the liquid level gauge indicators turn of magnetic connection；This knot
Structure is conducive to the requirement of reliability and seal；Meanwhile without power supply, avoid the difficulty that eminence takes electricity.
Preferably, as shown in the figure：The wireless pressure transmitter, pressure transmitter are comprising shell 301, the bottom of shell
Connector 303 is set, and the inside of shell is equipped with wiring board 310 and wire connection terminal 308, and communication module 307, temperature are connected on wiring board
Degree and pressure signal processing module 312, power supply 309；Pressure sensor 304 and temperature sensor 305 are housed in the connector；Institute
State pressure sensor, temperature sensor is connected by wiring board with temperature and pressure signal processing module；In this preferred embodiment
Disclosed wireless pressure transmitter and pressure transmitter configurations are reasonable, can simultaneously collecting temperature and pressure；Therefore, to insulation sleeve
The monitoring of pipe provides more comprehensive information, is promoted and monitors comprehensive and accuracy；
The communication module of the wireless pressure transmitter is the communication module of wireless telecommunications；The communication of the pressure transmitter
Module is wireless telecommunications or the communication module of wire communication；The wireless pressure transmitter is equipped with antenna 306, day on the shell
Line connects with wire connection terminal；The power supply of the wireless pressure transmitter is the battery covered after shell.In the present embodiment,
The structure of wireless pressure transmitter is targetedly devised, antenna is set to help to be wirelessly transferred, battery is set to cause without high
Place takes electricity, promotes reliability and safety-type.
Preferably, as shown in the figure：The wireless pressure transmitter, pressure transmitter also include the table set on the shell
Disk 302 is provided with display window on dial plate, and corresponding, the wiring board is also associated with display module 311.The present embodiment is set
Display structure in (wireless) pressure transmitter position enables to the observation of plurality of positions to realize that this mode contributes to simultaneously
It is checked at any time as a result, can also prevent some environment from showing mistake caused by malfunctioning, hence monitoring is relatively reliable.
Preferably, as shown in the figure：The switch valve is motor-driven valve；The control module of the motor-driven valve and in-site collecting device
Controller connection；After setting motor-driven valve, entire sampling process more automates, and can realize on-line period, specifically, just
Ground display instrument control motor-driven valve starts so that the threeway port closing of pressure transmitter position, the threeway for drawing down-sampling pipe are opened
It (under normal monitoring situation, drawing the threeway port closing of down-sampling pipe), is sampled at this point it is possible to be opened manually using valve,
It is very convenient；Reduce sampling difficulty.
Alternatively, the switch valve is hand-operated valve, rotating mark is provided on the valve handle of the hand-operated valve, as shown in Figure 2.
The convenience of hand-operated valve declines, but a kind of preferred embodiment that cost also simultaneously declines and the utility model is recommended.
Preferably, as shown in the figure：The in-site collecting device includes babinet 702 and case lid 701, and the bottom of box sets to wear
Enter the lead-in line joint 709 of inlet wire and the outlet joint 708 for being pierced by outlet；The tank surface be provided with main display 707,
Switch 703, environment temperature display screen 704 and ambient humidity display screen 705；The environment temperature display screen and ambient humidity are shown
Shield for digital imaging tube display screen；The casing top sets radio transmission antenna 706；The alarm is audible-visual annunciator；
The in-site collecting device includes 1 road moisture signal, 1 road temperature signal；2 tunnel alarm signals；1 tunnel, 485 remote transfer signal；Wireless telecommunications
Module is wirelessly transferred using 433MHz zigbee.In-site collecting device scene carries out pressure acquisition and transmission, play scene display and
Relay transmission acts on, can allow scene all 750kV high-tension insulating bushing on the pressure transmitter and wireless pressure installed
Transmitter is connected simultaneously with in-site collecting device；Thus, in-site collecting device can concentration of transmissions and display, edge manipulation and pipe
Reason；In-site collecting has the acquisition signaling interface of multichannel.
Preferably, as shown in the figure：The controller of the in-site collecting device includes amplification circuit module, arm processor, number
Analog converter, voltage current adapter and electric current galvanostat；Controller passes ambient pressure sensor, ambient humidity sensor
The signal come carries out signal amplification by built-in amplification circuit module, and amplified signal is carried out by the arm processor
It calculates；The signal data being calculated is converted into voltage signal by digital analog converter, then passes through the voltage and current
Converter changes into current signal, and current signal is transmitted by the communication module by in-site collecting device after electric current galvanostat.This
In embodiment, the ambient humidity sensor signal and ambient temperature signal that collect can be accurately by ARM after amplification
It manages device acquisition to calculate, final result of calculation can also become the teletransmission current signal of final stabilization after conversion, realize
Signal enhancing improves the stability of overall data acquisition process transmission.
Preferably, as shown in the figure：The pressure transmitter uses range as 0~0.5MPa, precision be 0.1 grade, temperature-
40~80 degree of absolute pressure transducer；The babinet of the in-site collecting device is water-proof type cast aluminium cabinet.
Preferably, as shown in the figure：The connecting line of the pressure transmitter and in-site collecting device is Teflon lead；The nothing
The antenna of line pressure transmitter is Teflon antenna.Iron Buddhist dragon material can avoid that chemistry occurs with the external sundries such as transformer oil
Reflection, improving stability.
The a series of tool that the feasibility embodiment only for the utility model is described in detail of those listed above
Body illustrates, they are all to be made without departing from the utility model skill spirit not to limit the scope of protection of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Moreover, it will be appreciated that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
Using specification as an entirety, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (9)
1. for the pressure on-line monitoring system of 750kV high-tension insulating bushings, fluid is filled with inside high-tension insulating bushing, it is special
Sign is：Include fuel outlet that is being arranged on high-tension insulating bushing bottom sides and being connected with high-tension insulating bushing inside；It is described
One threeway is installed on fuel outlet；One entrance of threeway is connected with the fuel outlet, is installed respectively in two outlets of threeway
There is pressure transmitter and draw down-sampling pipe；Draw down-sampling pipe to extend downwardly, and draw the end installation Sampler valves of down-sampling pipe；
It is equipped with to switch entrance in the threeway and two exports the switch valve being respectively turned on；
The signal of the pressure transmitter is communicated by communication module and in-site collecting device；
The in-site collecting device is communicated by communication device and background computer；
The in-site collecting device includes controller, display, alarm and the wireless telecommunications mould for being communicated with background computer
Block；The controller is connected with the display, alarm and wireless communication module；The in-site collecting device is also associated with power supply
Module；The in-site collecting device is also comprising the environment temperature sensor and ambient humidity sensor being connected with controller.
2. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as described in claim 1, it is characterised in that：Institute
It states and top grading shield is provided at the top of high-tension insulating bushing, filled with fluid in the grading shield of top, on the top grading shield
Liquid level gauge is installed；The housing side of the liquid level gauge offers to assemble the casing of wireless pressure transmitter；It is described wireless
Pressure transmitter and the in-site collecting device wireless telecommunications.
3. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as claimed in claim 2, it is characterised in that：Institute
Wireless pressure transmitter, pressure transmitter are stated comprising shell, the bottom of shell sets connector, and the inside of shell is equipped with circuit
Plate and wire connection terminal are connected to communication module, temperature and pressure signal processing module, power supply on wiring board；It is equipped in the connector
Pressure sensor and temperature sensor；The pressure sensor, temperature sensor by wiring board and temperature and pressure signal at
Manage module connection；
The communication module of the wireless pressure transmitter is the communication module of wireless telecommunications；The communication module of the pressure transmitter
For wireless telecommunications or the communication module of wire communication；The wireless pressure transmitter is equipped with antenna on the shell, and antenna is with connecing
Line terminals connect；The power supply of the wireless pressure transmitter is the battery covered after shell.
4. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as claimed in claim 3, it is characterised in that：Institute
It states wireless pressure transmitter, pressure transmitter and also includes the dial plate set on the shell, display window is provided on dial plate, it is right
It answers, the wiring board is also associated with display module.
5. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as described in claim 1, it is characterised in that：Institute
Switch valve is stated as motor-driven valve；The control module of the motor-driven valve is connected with the controller of in-site collecting device；
Alternatively, the switch valve is hand-operated valve, rotating mark is provided on the valve handle of the hand-operated valve.
6. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as described in claim 1, it is characterised in that：Institute
It states in-site collecting device and includes babinet and case lid, the bottom of box sets to penetrate the lead-in line joint of inlet wire and for being pierced by outlet
Outlet joint；The tank surface is provided with main display, switch, environment temperature display screen and ambient humidity display screen；It is described
Environment temperature display screen and ambient humidity display screen are digital imaging tube display screen；The casing top sets wireless transmission day
Line；The alarm is audible-visual annunciator；The in-site collecting device includes 1 road moisture signal, 1 road temperature signal；2 road alarm signals
Number；1 tunnel, 485 remote transfer signal；Wireless communication module is wirelessly transferred using 433MHz zigbee.
7. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as claimed in claim 6, it is characterised in that：Institute
The controller for stating in-site collecting device includes amplification circuit module, arm processor, digital analog converter, voltage current adapter
With electric current galvanostat；The signal that ambient pressure sensor, ambient humidity sensor transmit is passed through built-in amplification electricity by controller
Road module carries out signal amplification, and amplified signal is calculated by the arm processor；The signal data being calculated leads to
It crosses digital analog converter and is converted into voltage signal, current signal, electric current are then changed by the voltage current adapter
Signal is transmitted by the communication module by in-site collecting device after electric current galvanostat.
8. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as described in claim 1, it is characterised in that：Institute
It states pressure transmitter and uses range as 0~0.5MPa, precision is 0.1 grade, absolute pressure transducer of the temperature at -40~80 degree；
The babinet of the in-site collecting device is water-proof type cast aluminium cabinet.
9. the pressure on-line monitoring system of 750kV high-tension insulating bushings is used for as claimed in claim 3, it is characterised in that：Institute
The connecting line for stating pressure transmitter and in-site collecting device is Teflon lead；The antenna of the wireless pressure transmitter is Teflon
Antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721310515.7U CN207379659U (en) | 2017-10-12 | 2017-10-12 | For the pressure on-line monitoring system of 750kV high-tension insulating bushings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721310515.7U CN207379659U (en) | 2017-10-12 | 2017-10-12 | For the pressure on-line monitoring system of 750kV high-tension insulating bushings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207379659U true CN207379659U (en) | 2018-05-18 |
Family
ID=62338151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721310515.7U Active CN207379659U (en) | 2017-10-12 | 2017-10-12 | For the pressure on-line monitoring system of 750kV high-tension insulating bushings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207379659U (en) |
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2017
- 2017-10-12 CN CN201721310515.7U patent/CN207379659U/en active Active
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