CN109932280A - Micro- water density transmitter and the micro- water density on-line monitoring system of SF6 for applying it - Google Patents
Micro- water density transmitter and the micro- water density on-line monitoring system of SF6 for applying it Download PDFInfo
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- CN109932280A CN109932280A CN201910338289.0A CN201910338289A CN109932280A CN 109932280 A CN109932280 A CN 109932280A CN 201910338289 A CN201910338289 A CN 201910338289A CN 109932280 A CN109932280 A CN 109932280A
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Abstract
The invention discloses a kind of micro- water density transmitter and using its SF6Micro- water density on-line monitoring system, micro- water density transmitter include connector and Transmitter body, and the connector is provided with gas chamber and is connected with gas chamber and so as to SF6Gas enters the air inlet of gas chamber；At least part of the Transmitter body is protruded into gas chamber, is connect with air chamber sealing and for acquiring the indoor pressure value of gas, temperature value and humidity value.Micro- water density transmitter of the invention can not discharge SF6Monitor SF in the case where gas on-line6Pressure value, temperature value and the humidity value of gas, it is convenient and easy, also avoid the pollution to atmosphere.
Description
Technical Field
The invention relates to a micro-water density transmitter and SF using the same6Little water density on-line monitoring system.
Background
Sulfur hexafluoride (SF)6) It is a non-toxic, tasteless, colourless, odorless and non-combustible synthetic gas, and possesses insulating property and arc-extinguishing capacity which are not comparable with general dielectric medium. Filling SF6The electric equipment has small floor area, low operation noise and no fire hazard, thus greatly improving the safe reliability of the operation of the electric equipment. The application of the gas insulated metal enclosed electrical apparatus (GIS) breaks through the concept of the traditional transformer substation, so that the development of a novel compact, high-voltage and high-capacity transformer substation is realized, and the GIS becomes an important way for transforming the urban network transformer substation.
With the development of oilless and miniaturized power equipment in China, SF is adopted in a 35-500kV high-voltage circuit breaker6Circuit breakers and the like, in which gas is used as an insulating arc extinguishing medium, have been increasing year by year. For SF6Monitoring of the condition of gases has become a guarantee of SF6One of the main technical measures for normal and safe operation of electrical equipment such as a circuit breaker and the like.
SF6Whether the two physical indexes of the humidity and the density of the gas are within the rated range or not determines the SF6The insulation and arc extinguishing performance of the gas are effective or not. But SF6The high-voltage switch electric appliance is manufactured and operated because: SF6The fresh air contains certain moisture; when the equipment is installed, disassembled and overhauled, and inflated and supplemented with air, water can be left in the air chamber and the pipe valve due to careless leakage in the process; faults in the machining of the switch work and the above-mentioned operations, etc., cause leakages in the seal, SF6The gas leaks outwards, and the external water can reversely permeate into the gas chamber because the external water partial pressure is far higher than that of the gas in the gas chamber, so that SF is caused6The gas has a decreasing density and an increasing water content. Excessive moisture can cause the following hazards:
SF6after the gas contains excessive moisture, under the participation of some metal substances, SF can be enabled at the temperature of more than 200 DEG C6Hydrolysis reaction occurs to generate active hydrofluoric acid (HF) and toxic SOF2、SO2F2、SF4And SOF4The low-valent sulfur fluoride will also decompose to generate greenhouse gas under the action of high-temperature arc dischargeSulfur dioxide (SO) of2) And hydrofluoric acid (HF). They will corrode insulators and metal parts and generate heat, thereby causing a risk of gas pressure in the gas chamber to rise, the withstand voltage strength and the breaking capacity of the circuit breaker to decrease, and in severe cases, the circuit breaker will explode, causing not only a power grid accident, but also harmful and greenhouse gases to be filled into the atmosphere, forming an electrical and environmental hazard.
SF of transformer substation6Circuit breaker SF6Whether three physical indexes of the density, the humidity and the temperature of the gas are within a rated range or not determines the safe operation state of the circuit breaker. The operating regulations of the power grid impose the regulation that the SF must be regularly checked before and during the operation of the equipment6The density and water content of the gas are detected. SF6The on-site detection method of the water content of the gas comprises an electrolysis method, a condensation method and a resistance-capacitance method. At present, portable dew point hygrometers are mostly adopted for field detection.
The power-related regulations specify: the gas density is monitored cyclically every day, every 1-2 years for SF6The water content of the gas is detected. The water content detection usually adopts a dew point meter to carry out on-site power failure detection, the standard sampling gas flow is calculated according to the detection, namely 30-40 liters/hour, and SF is required to be discharged in one-time test6The gas was about 35 liters. The national power industry is divided into two major power grid companies and five power generation groups. By the end of 2006, 333,294 medium-high voltage circuit breakers of 12-750 kV in only one power grid company, namely the power grid governed by the national power grid company, are available, and the quantity does not include about 10% of annual increase. Each circuit breaker discharges 35 liters of SF per year on average6The total amount of gas discharged is self-evident in the effect of air pollution.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a micro-water density transmitter which can not discharge SF6On-line monitoring of SF in the presence of gases6The pressure value, the temperature value and the humidity value of the gas are convenient and trouble-saving, and the pollution to the atmosphere is avoided。
In order to solve the technical problems, the technical scheme of the invention is as follows: a micro-water density transmitter comprising:
a connector provided with an air chamber and communicated with the air chamber for SF6The gas enters the gas inlet of the gas chamber;
at least one part of the transmitter main body extends into the air chamber, is connected with the air chamber in a sealing way and is used for acquiring the pressure value, the temperature value and the humidity value in the air chamber.
The transmitter main body comprises a base, a sensor component arranged at the lower end of the base and a signal processing component arranged at the upper end of the base; wherein,
the base is hermetically connected with the air chamber, the sensor assembly is arranged in the air chamber, and the sensor assembly is suitable for acquiring pressure signals, temperature signals and humidity signals in the air chamber;
the signal processing assembly is in signal connection with the sensor assembly and is suitable for processing the air pressure signal, the temperature signal and the humidity signal acquired by the sensor assembly to obtain a pressure value, a temperature value and a humidity value.
Further, the base is in threaded connection with the connecting body; and/or the signal processing assembly is in signal connection with the sensor assembly through a plurality of sintering pins integrally formed with the base.
The sensor component comprises a sensor mainboard arranged on a base, and a pressure sensor, a temperature sensor and a humidity sensor which are respectively integrated on the sensor mainboard, and the signal processing component comprises a transmitter mainboard arranged on the base, and a DSP signal processing module, a central processing unit, a power supply module and a communication interface which are respectively integrated on the transmitter mainboard; wherein,
said pressureThe sensor is adapted to collect pressure signals in the gas chamber, and the temperature sensor is adapted to collect SF in the gas chamber6Temperature signal of gas, the humidity sensor being adapted to collect SF in the gas chamber6A humidity signal of the gas;
the DSP signal processing module is in signal connection with the pressure sensor, the temperature sensor and the humidity sensor respectively, and is suitable for processing the air pressure signal, the temperature signal and the humidity signal to obtain a pressure value, a temperature value and a humidity value;
the central processing unit is in signal connection with the DSP signal processing module and the communication interface respectively, and is suitable for receiving the pressure value, the temperature value and the humidity value sent by the DSP signal processing module and sending the pressure value, the temperature value and the humidity value out through the communication interface;
the power module is respectively and electrically connected with the DSP signal processing module and the central processing unit, and the power module is suitable for supplying power to the DSP signal processing module and the central processing unit.
Further for the area of increase changer mainboard under the limited condition in space, the changer mainboard is including the first mainboard and the second mainboard that set up side by side, first mainboard is installed on the base, the second mainboard is fixed on first mainboard through at least one buckle detachably.
Further in order to protect the signal processing assembly and facilitate the connection of the signal processing assembly with other equipment, the transmitter main body further comprises a shell and a top cover, the shell is sleeved outside the signal processing assembly and fixedly connected with the base, the top cover is fixed at the upper end of the shell, and an electrical connector connected with the signal processing assembly in a signal mode is installed on the top cover.
Further convenience for supplementing GIS room with SF6The connector is also provided with an air supplementing port communicated with the air chamber.
The specific structure of the connector is further provided, the connector is a three-way self-sealing valve, one interface of the three-way self-sealing valve serves as an air inlet, and the other interface of the three-way self-sealing valve serves as an air supplementing port.
The invention also provides an SF6The micro-water density on-line monitoring system comprises:
the air inlets of the micro water density transmitters are communicated with an external GIS chamber;
and the communication server is in signal connection with each micro water density transmitter so as to receive, store and display the pressure value, the temperature value and the humidity value acquired by the micro water density transmitter through the communication server.
Further to enable remote monitoring, SF6The micro-water density on-line monitoring system also comprises:
the industrial personal computer is connected with the communication server through a network so that the communication server can synchronize the received pressure value, temperature value and humidity value to the industrial personal computer;
and the remote equipment is connected with the industrial personal computer through a network, so that the industrial personal computer uploads the pressure value, the temperature value and the humidity value to the remote equipment.
After the technical scheme is adopted, the air inlet is communicated with the GIS room of the transformer substation site, and SF in the GIS room6The gas enters the gas chamber, the transmitter main body is hermetically connected with the gas chamber, and further the SF in the gas chamber is collected through the transmitter main body6The pressure value, temperature value and humidity value of the gas can effectively avoid SF in the gas chamber6The gas leaks, and the micro water density transmitter of the invention can not discharge SF6On-line monitoring of SF in the presence of gases6The pressure value, the temperature value and the humidity value of the gas are convenient and trouble-saving, the pollution to the atmosphere is avoided, and when the micro-water density transmitter is installed, the gas inlet is communicated with the GIS chamber, so that the operation is convenient and fast; SF according to the invention6The micro water density on-line monitoring system receives the pressure value, the temperature value and the humidity value collected by the micro water density transmitter through the communication server, stores and transmits the pressure value, the temperature value and the humidity value to the micro water density on-line monitoring systemAnd displaying that the pressure value, the temperature value and the humidity value are synchronized to the industrial personal computer by the communication server through a TCP/IP or IEC61850 protocol, and the industrial personal computer uploads the pressure value, the temperature value and the humidity value to the remote equipment through a local area network or the Internet, so that the working personnel can conveniently monitor the site information of the transformer substation through the remote equipment in real time.
Drawings
FIG. 1 is a schematic structural view of a micro-water density transmitter of the present invention;
FIG. 2 is a front view of the transmitter body of the present invention;
FIG. 3 is a left side view of the transmitter body of the present invention;
FIG. 4 is a bottom view of the transmitter body of the present invention;
FIG. 5 SF of the invention6A functional block diagram of a micro water density on-line monitoring system;
FIG. 6 is a front view of a communication server of the present invention;
fig. 7 is a rear view of the communication server of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example one
As shown in fig. 1 to 4, a micro water density transmitter includes:
a connector 1, wherein the connector 1 is provided with an air chamber 11 and is communicated with the air chamber 11 so as to facilitate SF6A gas inlet 12 for gas to enter the gas chamber 11;
at least one part of the transmitter body extends into the air chamber 11, is hermetically connected with the air chamber 11 and is used for acquiring a pressure value, a temperature value and a humidity value in the air chamber 11.
As shown in fig. 1-4, the transmitter body comprises a base 2, a sensor assembly mounted at the lower end of the base 2, and a signal processing assembly mounted at the upper end of the base 2; wherein,
the base 2 is hermetically connected with the air chamber 11, the sensor assembly is arranged in the air chamber 11 and is suitable for acquiring a pressure signal, a temperature signal and a humidity signal in the air chamber 11;
the signal processing assembly is in signal connection with the sensor assembly and is suitable for processing the air pressure signal, the temperature signal and the humidity signal acquired by the sensor assembly to obtain a pressure value, a temperature value and a humidity value. Specifically, the density value of the SF6 gas can be calculated by the pressure value and the temperature value, and the calculation method is prior art and is not described in detail.
As shown in fig. 1 to 4, the base 2 is connected with the connector 1 by screw threads; and/or the signal processing assembly is in signal connection with the sensor assembly through a plurality of sintering pins 21 which are integrally formed with the base 2. In this embodiment, in order to prevent the micro water density transmitter from loosening during vibration, the fastening thread glue is coated on the place where the base 2 is screwed with the connector 1.
As shown in fig. 2, 3 and 4, the sensor assembly includes a sensor motherboard 31 installed on the base 2, and a pressure sensor 32, a temperature sensor 33 and a humidity sensor 34 respectively integrated on the sensor motherboard 31, and the signal processing assembly includes a transmitter motherboard installed on the base 2, and a DSP signal processing module, a central processing unit, a power supply module and a communication interface respectively integrated on the transmitter motherboard; wherein,
the pressure sensor 32 is adapted to acquire a pressure signal within the gas cell 11, and the temperature sensor 33 is adapted to acquire the SF within the gas cell 116Temperature signal of gas, saidThe humidity sensor 34 is adapted to collect SF in the gas cell 116A humidity signal of the gas;
the DSP signal processing module is in signal connection with the pressure sensor 32, the temperature sensor 33 and the humidity sensor 34 respectively, and is suitable for processing the air pressure signal, the temperature signal and the humidity signal to obtain a pressure value, a temperature value and a humidity value;
the central processing unit is in signal connection with the DSP signal processing module and the communication interface respectively, and is suitable for receiving the pressure value, the temperature value and the humidity value sent by the DSP signal processing module and sending the pressure value, the temperature value and the humidity value out through the communication interface;
the power module is respectively and electrically connected with the DSP signal processing module and the central processing unit, and the power module is suitable for supplying power to the DSP signal processing module and the central processing unit.
As shown in fig. 2 and 3, in order to increase the area of the transmitter main board in the limited space, the transmitter main board includes a first main board 41 and a second main board 42 arranged in parallel, the first main board 41 is mounted on the base 2, and the second main board 42 is detachably fixed on the first main board 41 by at least one fastener 43.
As shown in fig. 1-3, in order to protect the signal processing assembly and facilitate the connection of the signal processing assembly with other devices, the transmitter main body further comprises a shell 5 and a top cover 6, the shell 5 is sleeved outside the signal processing assembly and fixedly connected with the base 2, the top cover 6 is fixed at the upper end of the shell 5, and an electrical connector 7 connected with the signal processing assembly in a signal manner is mounted on the top cover 6. In this embodiment, the electrical connector 7 is in signal connection with the signal processing assembly through a plug 71, the housing 5 and the base 2 and the top cover 6 and the housing 5 are fixed by bolts, and the housing 5 and the base 2 and the top cover 6 and the housing 5 are sealed by sealing rings.
As shown in FIG. 1, the GIS chamber is supplemented with SF for convenience6Gas, the connecting body 1 is also provided with a gas chamber 11And an air supplement port 13 communicated with the air supply port.
As shown in fig. 1, the connector 1 is a three-way self-sealing valve, one interface of the three-way self-sealing valve is used as an air inlet 12, and the other interface of the three-way self-sealing valve is used as an air replenishing port 13.
In the present embodiment, the pressure sensor has a model number of MS 5108; the type of the temperature sensor is ISTAG 150; the model of the humidity sensor is IST K5-W; the model of the DSP signal processing module is UCC27511 DBVR; the model of the central processor is STM 32.
Example two
As shown in FIG. 5, a SF6The micro-water density on-line monitoring system comprises:
a plurality of micro-water density transmitters as described in the first embodiment, wherein the air inlet 12 of the micro-water density transmitters is communicated with an external GIS room;
and the communication server 8 is in signal connection with each micro water density transmitter, so that the pressure value, the temperature value and the humidity value collected by the micro water density transmitters are received through the communication server 8 and stored and displayed. In this embodiment, SF6Little water density on-line monitoring system still includes the control screen cabinet with communication server 8 assorted, at least part of communication server 8 is placed in the control screen cabinet, as shown in fig. 6, 7, communication server 8's casing 81 is the cuboid in order conveniently to put into the control screen cabinet, communication server 8's front panel 82 is slightly wider than the control screen cabinet, and the four corners of front panel 82 is equipped with the bolt hole 83 that is used for fixing to with front panel 82 fixed value control screen cabinet through the bolt, front panel 82 is equipped with handle 84 that is used for taking, and front panel 82 central authorities are equipped with display screen 85, still is equipped with switch 86 on front panel 82, is equipped with a plurality of changer interfaces 87 at communication server 8's rear panel 89, communication server 8 is connected with little water density changer signal through changer interface 87, and rear panel 89 still is equipped with power source interface 881, Network port 882 and upper computer interfaceA port 883 and a ground interface 884. Specifically, the micro water density transmitter sends the pressure value, the temperature value and the humidity value to the communication server 8 in an RS485 communication mode.
As shown in fig. 5, SF in order to enable remote monitoring6The micro-water density on-line monitoring system also comprises:
the industrial personal computer 9 is connected with the communication server 8 through a network, so that the communication server 8 can synchronize the received pressure value, temperature value and humidity value to the industrial personal computer 9;
and the remote equipment 10 is connected with the industrial personal computer 9 through a network, so that the industrial personal computer 9 uploads the pressure value, the temperature value and the humidity value to the remote equipment 10. In this embodiment, the communication server 8 synchronizes the pressure value, the temperature value and the humidity value to the industrial personal computer 9 through a TCP/IP or IEC61850 protocol, and the industrial personal computer 9 uploads the pressure value, the temperature value and the humidity value to the remote device 10 through the local area network or the internet, so that the substation site information can be conveniently monitored in real time through the remote device 10.
The working principle of the invention is as follows:
the air inlet 12 is communicated with a GIS room of a transformer substation site, so that SF in the GIS room6Gas enters the gas chamber 11, the transmitter main body is hermetically connected with the gas chamber 11, and then SF in the gas chamber 11 is collected through the transmitter main body6The pressure value, temperature value and humidity value of the gas can effectively avoid SF in the gas chamber 116The gas leaks, and the micro water density transmitter of the invention can not discharge SF6On-line monitoring of SF in the presence of gases6The pressure value, the temperature value and the humidity value of the gas are convenient and trouble-saving, the pollution to the atmosphere is avoided, and when the micro-water density transmitter is installed, the gas inlet 12 is communicated with the GIS chamber, so that the operation is convenient and fast; SF according to the invention6The micro water density on-line monitoring system receives the pressure value, the temperature value and the humidity value collected by the micro water density transmitter through the communication server 8, stores and displays the pressure value, the temperature value and the humidity value, and the communication server 8 synchronizes the pressure value, the temperature value and the humidity value to the pressure value, the temperature value and the humidity value through a TCP/IP or IEC61850 protocolIndustrial computer 9, industrial computer 9 rethread local area network or internet upload pressure value, temperature value and humidity value to remote equipment 10, then make things convenient for the staff to pass through remote equipment 10 real time monitoring transformer substation site information.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A micro water density transmitter, comprising:
a connector (1), wherein the connector (1) is provided with an air chamber (11) and is communicated with the air chamber (11) so as to facilitate SF6A gas inlet (12) for gas to enter the gas chamber (11);
at least one part of the transmitter body extends into the air chamber (11), is connected with the air chamber (11) in a sealing way and is used for acquiring a pressure value, a temperature value and a humidity value in the air chamber (11).
2. The micro water density transmitter of claim 1, wherein: the transmitter main body comprises a base (2), a sensor assembly arranged at the lower end of the base (2) and a signal processing assembly arranged at the upper end of the base (2); wherein,
the base (2) is connected with the air chamber (11) in a sealing mode, the sensor assembly is arranged in the air chamber (11) and is suitable for collecting pressure signals, temperature signals and humidity signals in the air chamber (11);
the signal processing assembly is in signal connection with the sensor assembly and is suitable for processing the air pressure signal, the temperature signal and the humidity signal acquired by the sensor assembly to obtain a pressure value, a temperature value and a humidity value.
3. The micro water density transmitter of claim 2, wherein: the base (2) is in threaded connection with the connecting body (1); and/or the signal processing component and the sensor component are in signal connection through a plurality of sintering pins (21) which are integrally formed with the base (2).
4. The micro water density transmitter of claim 2, wherein:
the sensor assembly comprises a sensor mainboard (31) arranged on the base (2), and a pressure sensor (32), a temperature sensor (33) and a humidity sensor (34) which are respectively integrated on the sensor mainboard (31), and the signal processing assembly comprises a transmitter mainboard arranged on the base (2), and a DSP signal processing module, a central processing unit, a power supply module and a communication interface which are respectively integrated on the transmitter mainboard; wherein,
the pressure sensor (32) is adapted to acquire a pressure signal within the gas chamber (11), and the temperature sensor (33) is adapted to acquire SF within the gas chamber (11)6A temperature signal of the gas, the humidity sensor (34) being adapted to acquire SF in the gas chamber (11)6A humidity signal of the gas;
the DSP signal processing module is in signal connection with the pressure sensor (32), the temperature sensor (33) and the humidity sensor (34) respectively, and is suitable for processing the air pressure signal, the temperature signal and the humidity signal to obtain a pressure value, a temperature value and a humidity value;
the central processing unit is in signal connection with the DSP signal processing module and the communication interface respectively, and is suitable for receiving the pressure value, the temperature value and the humidity value sent by the DSP signal processing module and sending the pressure value, the temperature value and the humidity value out through the communication interface;
the power module is respectively and electrically connected with the DSP signal processing module and the central processing unit, and the power module is suitable for supplying power to the DSP signal processing module and the central processing unit.
5. The micro water density transmitter of claim 4, wherein: the transmitter mainboard comprises a first mainboard (41) and a second mainboard (42) which are arranged in parallel, wherein the first mainboard (41) is installed on the base (2), and the second mainboard (42) is detachably fixed on the first mainboard (41) through at least one buckle (43).
6. The micro water density transmitter of claim 2, wherein: the changer main part still includes shell (5) and top cap (6), shell (5) suit in the outside of signal processing subassembly and with base (2) fixed connection, the upper end in shell (5) is fixed in top cap (6), just install on top cap (6) with signal processing subassembly signal connection's electrical connector (7).
7. The micro water density transmitter of claim 1, wherein: the connector (1) is also provided with an air supplementing port (13) communicated with the air chamber (11).
8. The micro water density transmitter of claim 7, wherein: the connector (1) is a three-way self-sealing valve, one interface of the three-way self-sealing valve is used as an air inlet (12), and the other interface of the three-way self-sealing valve is used as an air supplementing port (13).
9. SF (sulfur hexafluoride)6Little water density on-line monitoring system, its characterized in that, it includes:
a plurality of micro-water density transmitters as claimed in any one of claims 1 to 8, the air inlets (12) of the micro-water density transmitters being in communication with an external GIS chamber;
and the communication server (8) is in signal connection with each micro water density transmitter, so that the pressure value, the temperature value and the humidity value collected by the micro water density transmitters are received through the communication server (8) and stored and displayed.
10. SF according to claim 96Little water density on-line monitoring system, its characterized in that still includes:
the industrial personal computer (9), the industrial personal computer (9) is connected with the communication server (8) through a network, so that the communication server (8) synchronizes the received pressure value, temperature value and humidity value to the industrial personal computer (9);
the remote equipment (10), remote equipment (10) and industrial computer (9) network connection to industrial computer (9) upload pressure value, temperature value and humidity value to remote equipment (10).
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| CN201910338289.0A CN109932280A (en) | 2019-04-25 | 2019-04-25 | Micro- water density transmitter and the micro- water density on-line monitoring system of SF6 for applying it |
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| CN201910338289.0A CN109932280A (en) | 2019-04-25 | 2019-04-25 | Micro- water density transmitter and the micro- water density on-line monitoring system of SF6 for applying it |
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