CN201464319U - Gas density monitor - Google Patents
Gas density monitor Download PDFInfo
- Publication number
- CN201464319U CN201464319U CN2009200908181U CN200920090818U CN201464319U CN 201464319 U CN201464319 U CN 201464319U CN 2009200908181 U CN2009200908181 U CN 2009200908181U CN 200920090818 U CN200920090818 U CN 200920090818U CN 201464319 U CN201464319 U CN 201464319U
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- CN
- China
- Prior art keywords
- gas density
- density monitor
- change
- temperature sensor
- computer interface
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- 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.)
- Expired - Fee Related
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Abstract
A gas density monitor includes a meter body, a pointer-type dial plate, a wiring box, and a pressure sensor and a temperature sensor which are arranged in the meter body. A signal converter is arranged on the meter body, a converting circuit and a computer interface are arranged inside the signal converter, the converting circuit includes a density computing module and a signal outputting module, output terminals of the pressure sensor and the temperature sensor are connected with the conversion circuit, an output terminal of the conversion circuit is connected with the computer interface. The gas density monitor can compute SF6 air precision precisely, output standard signals as to be connected with the computer, realize pre-warming and condition repair, and have the advantages of stable performance and vibration/shock resistance.
Description
Technical field
The utility model relates to a kind of gas monitor apparatus, a kind of specifically gas density monitor.
Background technology
Be extensive use of SF in the High-Voltage Electrical Appliances field
6Gas is as gas insulating material, SF
6The density of gas has direct influence to the electric property of electric elements, particularly insulate and the arc extinguishing ability, and therefore in order to guarantee the safe operation of electric elements, must be to SF in the electric elements
6The density of gas is made real-time monitoring.But SF
6Density can't directly be measured, SF
6The SF of electrical equipment
6Gas density is the pressure representative after temperature compensated, and force value is represented during promptly with 20 ℃.And the monitoring device of existing gas density can't be connected with background computer, can not advance computer recording and analysis to monitoring information, can not give warning in advance and repair based on condition of component.
Summary of the invention
The purpose of this utility model is for solving the problems of the technologies described above the deficiency of existence, a kind of gas density monitor that can be connected with computing machine is provided, have detect accurately, stable performance, vibration resistance, impact-resistant characteristics, and can realize giving warning in advance and repair based on condition of component.
The utility model is the deficiency that solves the problems of the technologies described above existence, the technical scheme that is adopted is: a kind of gas density monitor, comprise the pressure transducer and the temperature sensor that are provided with in table body, pointer dial plate, terminal box and the table body, be provided with signal converter on one's body at table, be provided with change-over circuit and computer interface in the signal converter, change-over circuit comprises density computing module and signal output module, the output terminal of pressure transducer and temperature sensor is connected with change-over circuit, and the output terminal of change-over circuit links to each other with computer interface.
Described pointer dial plate top is provided with oil hole, and inside is filled with silicone oil.
Described signal output module is the RS485 signaling conversion circuit.
The beneficial effects of the utility model are: table built-in temperature sensors of high precision of body and pressure transducer, by density computing module in the signal converter, the density signal that utilizes mathematical formulae to be converted into not only can gamut carry out temperature compensation, also can accurately calculate SF
6Gas density, and no longer be normal pressure.The indication of mechanical type pointer combines with electronic signal output, not only can export the early warning of mechanical contacts opertaing device from terminal box, and also exportable standard signal is connected with computing machine, realizes computer monitoring, analysis and prediction, realizes giving warning in advance and repair based on condition of component; Fill silicone oil in the dial plate of monitor, vibration resistance, shock-resistant, the pointer indication is accurate, stable performance.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Mark among the figure: 1, table body, 2, signal converter, 3, terminal box, 4, change-over circuit, 5, pointer dial plate, 6, oil hole, 7, computer interface.
Embodiment
As shown in the figure, a kind of gas density monitor, comprise table body 1, pointer-type dial plate 5, the pressure transducer and the temperature sensor that are provided with in terminal box 3 and the table body 1. on table body 1, be provided with signal converter 2, be provided with change-over circuit 4 in the signal converter 2 and computer interface 7. change-over circuits 4 comprise density computing module and signal output module, signal output module can be used the RS485 signaling conversion circuit. and the density computing module uses little process chip as arithmetic element, its internal processes utilizes the mathematical operation formula that the measuring-signal of pressure transducer and temperature sensor input change-over circuit 4 is converted into density value, and export computer interface 7 to by the RS485 signaling conversion circuit, detect and analyze so that be connected to computing machine.
Described pointer dial plate 5 tops are provided with oil hole 6, and inside is filled with silicone oil, plays buffer action, and the assurance pointer is accurately indicated.
In the described terminal box 3 a pair of tonifying Qi alerting signal output contact and a pair of block signal output contact can be set, also can set up a pair of superpressure alerting signal output contact.The folding of each contact is driven by the gearing of dial plate pointer, works as SF
6Superpressure alerting signal output contact closure was sent alerting signal when gas density was excessive; Work as SF
6Tonifying Qi alerting signal output contact or block signal output contact closure were sent signal warning staff or are exported external control circuit to and guarantee safety when gas generation leak pressure descended.
The utility model, the signal converter 2 outputting standard RS485 signals by being provided with link to each other with the background computer software systems, thereby realize remote monitoring.Computer monitoring system is to SF
6Gas density is carried out continuous monitoring, record, can bulk registration data over the years and be depicted as curve, the day that curve puts into operation with product is that starting point is until current, latest tendency and leakage trend come into plain view, and by with the comparison of predefined alarming value and locking value, the trend that expression is intuitively leaked on the measurable tonifying Qi date, is prepared so that the staff carries out tonifying Qi.
Claims (3)
1. gas density monitor, comprise the pressure transducer and the temperature sensor that are provided with in table body (1), pointer dial plate (5), terminal box (3) and the table body (1), it is characterized in that: on table body (1), be provided with signal converter (2), be provided with change-over circuit (4) and computer interface (7) in the signal converter (2), change-over circuit (4) comprises density computing module and signal output module, the output terminal of pressure transducer and temperature sensor is connected with change-over circuit (4), and the output terminal of change-over circuit (4) links to each other with computer interface (7).
2. a kind of gas density monitor as claimed in claim 1 is characterized in that: described pointer dial plate (5) top is provided with oil hole (6), and inside is filled with silicone oil.
3. a kind of gas density monitor as claimed in claim 1 is characterized in that: described signal output module is the RS485 signaling conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200908181U CN201464319U (en) | 2009-06-15 | 2009-06-15 | Gas density monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200908181U CN201464319U (en) | 2009-06-15 | 2009-06-15 | Gas density monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464319U true CN201464319U (en) | 2010-05-12 |
Family
ID=42391670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200908181U Expired - Fee Related CN201464319U (en) | 2009-06-15 | 2009-06-15 | Gas density monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535277A (en) * | 2014-11-25 | 2015-04-22 | 国家电网公司 | Pressure monitoring method and system for SF6 gas |
-
2009
- 2009-06-15 CN CN2009200908181U patent/CN201464319U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535277A (en) * | 2014-11-25 | 2015-04-22 | 国家电网公司 | Pressure monitoring method and system for SF6 gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20110615 |