CN202166437U - Telemetering SF6 gas density monitor - Google Patents
Telemetering SF6 gas density monitor Download PDFInfo
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- CN202166437U CN202166437U CN2011202888531U CN201120288853U CN202166437U CN 202166437 U CN202166437 U CN 202166437U CN 2011202888531 U CN2011202888531 U CN 2011202888531U CN 201120288853 U CN201120288853 U CN 201120288853U CN 202166437 U CN202166437 U CN 202166437U
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Abstract
The utility model relates to a telemetering SF6 gas density monitor used in high-voltage power transformation system to detect density pressure of an SF6 gas. The monitor includes a shell provided with an output socket and a control contact output connecting box. An SF6 gas standard joint is installed in a lower part of the shell. A data processing module board is arranged in the shell. The data processing module board is installed on a module board carriage. A pressure sensor is installed in an inner lower part of the shell. The pressure sensor connects with an SF6 breaker in a gas circuit through the SF6 gas standard joint. The telemetering SF6 gas density monitor in the utility model has a simple structure and is safe and reliable. The electric sensor is used to detect the SF6 gas. And through ideal compensation and precision control, monitoring information obtained is delivered to a master control room in an RS 485 communication method. The telemetering SF6 gas density monitor in the utility model is a novel detecting meter applied to the high-voltage power transformation system. The telemetering SF6 gas density monitor in the utility model is an indispensable key component in guaranteeing the safe and stable running of the SF6 breaker in a power transmission system.
Description
Technical field:
The utility model relates to a kind of high-new detecting instrument metering device of high-voltage transforming system applies, and it is in the switch disconnector of a kind of high-voltage transforming system, is used for detecting the instrument and meter device of SF6 gas density, i.e. SF6 gas teletransmission density monitor.The utility model is a kind of novel measuring instrument of high-voltage transforming system applies; It is power transmission and transformation system safety, the indispensable Primary Component of stable operation; Its index quality directly affects the security of operation of high-tension power transmission and transformation equipment, so it is the forward position sentry of high-voltage transforming system.
Background technology:
Fast development along with power industry; Huge modernization generating is from thermal power generation, hydropower to modernized nuclear energy power generation etc.; Electric system progressively develops into the electric power networks with high capacity, UHV (ultra-high voltage), and the power transformation website of various voltage levels spreads all over the place.Power transmission and transformation voltage also by thousands of volt-ampere up to hundreds of kilovolt-amperes, automatic control technology has also striden into high-grade, precision and advanced new step.
In high-voltage power power transformation system, the high-voltage electric switch unit of use is called the SF6 isolating switch.The high capacity make and break contact of SF6 isolating switch is set in the airtight cavity; Charged into the SF6 gas of certain pressure in the cavity; SF6 gas is high capacity make and break contact insulation media, accomplishes the important duty of arc extinguishing, is protecting the safe and stable operation of high-voltage switch gear effectively.
But, the safety that the leakage of SF6 gas is directly jeopardizing the SF6 isolating switch in the cavity.Traditional SF6 density monitor is exactly the instrument of detection at any time SF6 state, detect the SF6 gaseous tension when not enough with timely make-up gas.But because traditional SF6 density monitor uses is simple mechanical compensation, different spot pressure in specified pressure limit, its force value does not reach desirable accurate precision.
The utility model content:
The purpose of the utility model is to overcome the deficiency that traditional SF6 density monitor exists, and a kind of instrument and meter device of novel detection SF6 gas density pressure is provided, i.e. SF6 gas teletransmission density monitor.
The utility model is achieved in that the utility model includes shell, and accessory power outlet and control contact output connection box are housed on the shell; The bottom of shell is equipped with SF6 gas standard joint, wherein, is provided with the data processing module plate in the enclosure; The data processing module plate is installed on the module board planker; The module board planker is contained on the shell, and pressure transducer also is equipped with in the bottom in the enclosure, and pressure transducer joins through SF6 gas standard joint and SF6 isolating switch gas circuit.
The shape of the shell of the utility model is cylindrical, or prismatic, or spherical.
The beneficial effect of the utility model:
1, the utility model is simple in structure, and is safe and reliable, uses electronic pressure transmitter to detect SF6 gas, and desirable detection compensation and accurate control is provided.Electrical principle is the pressure information that it uses electronic pressure transmitter, microcomputer data processing module plate (single card microcomputer) that sensor is arrived, and temperature information, carries out accurate science with micro computer and calculates, and its pressure information is converted into the force value of standard.Because the size at occurring in nature pressure will change with variation of ambient temperature; In order to weigh the time of day of SF6 gas intuitively; Micro computer converts force value into density value again, and the density value after the conversion is that objectively it no longer changes with the variation of environment temperature.
2, the temperature compensation done of this checkout facility shown in the density range (0.1～+ 0.9MPa) be linear, it has been traditional mechanical compensation no longer; Therefore, density value, ratings, tonifying Qi value, locking value that host computer provided are all being reached desirable levels of precision.
3, the information after the utility model is handled through micro processor with the canonical form of RS485 communications protocol, transmits output (also can export with the current forms of 4～20mA) with paired cable at a distance, and 485 maximum communication distances can reach 1200 meters; The data message of transporting to host computer (central host of supervisory control desk) is following:
1) the observed pressure value of SF6 gas (unit is MPa).
2), the density value of SF6 gas (force value when being equivalent to 20 ℃, unit is MPa).
3), the temperature value under the actual motion environment (unit be ℃).
4), the electric current of 4～20mA output (looking customer requirements).
Description of drawings:
Fig. 1 is the structural front view of the utility model;
Embodiment:
Below in conjunction with accompanying drawing the utility model is done further to specify.
In the accompanying drawing: 1, shell; 2, data processing module plate (micro processor and attached device thereof all are installed in the top of it); 3, module board planker; 4, pressure transducer (it through the SF6 gas in SF6 gas standard joint 6 and the SF6 isolating switch mutually structure lead to, its extension line causes on the data processing module plate 2); 5, accessory power outlet (power supply of module board 3 can be imported from here, and the output of module board 3 is drawn to host computer thus); 6, SF6 gas standard joint (M20x1.5); 7, control contact output connection box.
As shown in Figure 1, the utility model includes shell 1, and the shape of shell 1 is cylindrical, or prismatic, or spherical, or other form; Accessory power outlet 5 and control contact output connection box 7 are installed on the shell 1; The bottom of shell 1 is equipped with SF6 gas standard joint 6; In shell 1, be provided with data processing module plate 2, data processing module plate 2 is installed on the module board planker 3, and module board planker 3 is installed on the shell 1; Interior bottom at shell 1 also is equipped with pressure transducer 4, and pressure transducer 4 joins through SF6 gas standard joint 6 and SF6 isolating switch gas circuit.
The element of carrying out the detection of SF6 gas density is a pressure transducer 4, and it is logical with the direct structure mutually of SF6 gas, and the pressure information of sensing SF6 gas is with the formal transformation output of its pressure information that senses with electric signal.The master chip of being responsible for process information is microprocessor (MCU); It and numerous attached devices have constituted data processing module plate 2; It carries out pressure transducer and the received electric signal of temperature sensor complex calculations and handles, and award accurate calibration.At last, its general data after treatment are delivered to host computer with the form of RS485 digital electric signal with paired cable.
In addition, the utility model still can keep the contact control of former SF6 gas density relay.Controlling contact can be two groups (tonifying Qi, lockings), or the form of three groups (tonifying Qi, locking and superpressures), easy to use flexible, always controls the digital control of computer center to replenish and to cooperate.
Claims (2)
1. SF6 gas teletransmission density monitor; Include shell (1); Accessory power outlet (5) and control contact output connection box (7) are housed on the shell (1), and shell (1) bottom is equipped with SF6 gas standard joint (6), it is characterized in that: in shell (1), be provided with data processing module plate (2); Data processing module plate (2) is installed on the module board planker (3); Module board planker (3) is installed on the shell (1), in the interior bottom of shell (1) pressure transducer (4) is installed also, and pressure transducer (4) joins through SF6 gas standard joint (6) and SF6 isolating switch gas circuit.
2. a kind of SF6 gas teletransmission density monitor according to claim 1, it is characterized in that: the shape of shell (1) is cylindrical, or prismatic, or spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202888531U CN202166437U (en) | 2011-08-10 | 2011-08-10 | Telemetering SF6 gas density monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202888531U CN202166437U (en) | 2011-08-10 | 2011-08-10 | Telemetering SF6 gas density monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202166437U true CN202166437U (en) | 2012-03-14 |
Family
ID=45802256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202888531U Expired - Fee Related CN202166437U (en) | 2011-08-10 | 2011-08-10 | Telemetering SF6 gas density monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202166437U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104305628A (en) * | 2014-11-11 | 2015-01-28 | 国家电网公司 | Multifunctional monitoring alarm safety helmet for electric power |
| CN109060020A (en) * | 2018-08-03 | 2018-12-21 | 南方电网科学研究院有限责任公司 | Information centralized processing device |
| CN109100260A (en) * | 2018-06-27 | 2018-12-28 | 南方电网科学研究院有限责任公司 | Density relay and gas insulated enclosed combined electrical apparatus |
-
2011
- 2011-08-10 CN CN2011202888531U patent/CN202166437U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104305628A (en) * | 2014-11-11 | 2015-01-28 | 国家电网公司 | Multifunctional monitoring alarm safety helmet for electric power |
| CN104305628B (en) * | 2014-11-11 | 2017-01-11 | 国家电网公司 | Multifunctional monitoring alarm safety helmet for electric power |
| CN109100260A (en) * | 2018-06-27 | 2018-12-28 | 南方电网科学研究院有限责任公司 | Density relay and gas insulated enclosed combined electrical apparatus |
| CN109060020A (en) * | 2018-08-03 | 2018-12-21 | 南方电网科学研究院有限责任公司 | Information centralized processing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20170810 |