CN204807512U - Two calibration curve SF6 concentration sensing device based on half sealed cavity - Google Patents
Two calibration curve SF6 concentration sensing device based on half sealed cavity Download PDFInfo
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- CN204807512U CN204807512U CN201520479046.6U CN201520479046U CN204807512U CN 204807512 U CN204807512 U CN 204807512U CN 201520479046 U CN201520479046 U CN 201520479046U CN 204807512 U CN204807512 U CN 204807512U
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Abstract
The embodiment of the utility model discloses two calibration curve SF6 concentration sensing device based on half sealed cavity, include: shell, air vent, ultrasonic sensor, half sealed cavity, hyperbola memory circuit, temperature sensor, treater and collection measuring circuit, wherein: the air vent set up in on the shell, the shell with half sealed cavity communicates with each other, ultrasonic sensor's ultrasonic emission head and ultrasonic wave receipt head all set up in in half sealed cavity, the input of gathering the measuring circuit with ultrasonic sensor's analog signal output is connected, the output of gathering the measuring circuit with the treater electricity is connected, the treater respectively with the hyperbola memory circuit reaches temperature sensor connects. The utility model discloses SF6 concentration sensing device has reached the technological mesh of quick accurate measuring.
Description
Technical field
The utility model relates to technical field of detection of sulfur hexafluoride, more particularly, relates to the two calibration curve SF6 concentration sensing devices based on semi-enclosed cavity
Background technology
Sulfur hexafluoride SF6 is the inert gas of no color or smell, and because it has good electrical insulative property and excellent arc extinction performance, SF6 isolating switch widely uses in electrical industry.
SF6 can decomposite Toxic at high temperature under high pressure, SF6 primary cut-out raises due to sustained service temperature, form the environment of High Temperature High Pressure, and easily cause decomposition and the leakage of SF6 due to aging factor, in order to monitor the leakage situation of SF6, the gas insulated transformer substation being equipped with SF6 primary cut-out needs to install SF6 concentration sensing device.
Ultrasonic sensor is set in existing SF6 concentration sensing device and measures SF6, due to the unreasonable of structure, there is Measuring Time long, and ultrasonic sensor is the technical disadvantages of measuring accuracy difference by impacts of factor such as ultrasonic reflections, diffuse reflection and flow-disturbings.
Utility model content
In view of this, the utility model provides a kind of two calibration curve SF6 concentration sensing devices based on semi-enclosed cavity, to realize the technical purpose promptly and accurately detecting SF6 concentration.
Based on two calibration curve SF6 concentration sensing devices for semi-enclosed cavity, comprising: shell, air hole, ultrasonic sensor, semi-enclosed cavity, hyperbolic curve memory circuit, temperature sensor, processor and collection metering circuit, wherein:
Described air hole is arranged on described shell;
Described shell communicates with described semi-enclosed cavity;
The ultrasound wave emitting head of described ultrasonic sensor and ultrasound wave Receiver are all arranged in described semi-enclosed cavity;
The input end of described collection metering circuit is connected with the analog signal output of described ultrasonic sensor;
The output terminal of described collection metering circuit is electrically connected with described processor;
Described processor is connected with described hyperbolic curve memory circuit and described temperature sensor respectively.
Preferably, described semi-enclosed cavity is right cylinder;
Preferably, described semi-enclosed cavity inwall scribbles absorbing material.
Preferably, described shell is aluminum alloy material.
Preferably, described temperature sensor and described collection metering circuit are integrated design.
As can be seen from above-mentioned technical scheme, two calibration curve SF6 concentration sensing devices based on semi-enclosed cavity of the utility model embodiment, by the air hole on shell, SF6 gas collection is diffused in described semi-enclosed cavity, described shell communicates with described semi-enclosed cavity and gas can be enable to be detected fast, described semi-enclosed cavity plays encapsulation ultrasonic sensor and prevents reflection, the interference of diffuse reflection and air-flow, temperature variant curve under described hyperbolic curve memory circuit can preserve normal air, and the temperature variant curve of different SF6 concentration, and calculate current SF6 concentration by described processor reference curve, reduce temperature to the impact of SF6 concentration sensing device.Thus reach the technical purpose of fast accurate detection.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.Apparently, the accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the disclosed two calibration curve SF6 concentration sensing device structural representations based on semi-enclosed cavity of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides the two calibration curve SF6 concentration sensing devices based on semi-enclosed cavity, to realize the technical purpose promptly and accurately detecting SF6 concentration.
Fig. 1 shows the two calibration curve SF6 concentration sensing devices based on semi-enclosed cavity, comprising:
Shell 1, air hole 2, ultrasonic sensor 3, semi-enclosed cavity 4, hyperbolic curve memory circuit 5, temperature sensor 6, processor 7 and collection metering circuit 8, wherein:
Described air hole 2 is arranged on described shell 1;
Described shell 1 communicates with described semi-enclosed cavity 4;
When SF6 Leakage Gas occurs in the external world, be first diffused in described semi-enclosed cavity 4 by the air hole 2 on described shell 1.Preferably, described shell is aluminum alloy material, but does not limit to.
The ultrasound wave emitting head 31 of described ultrasonic sensor 3 and ultrasound wave Receiver 32 are all arranged in described semi-enclosed cavity 4;
As preferably, described semi-enclosed cavity 4 scribbles absorbing material and is set to right cylinder, described semi-enclosed cavity 4 prevents the disturbance of quick flow, cavity cylindrical inner wall scribbles absorbing material inhibitory reflex and the interference caused is penetrated in diffuse reflection, thus plays stable ultrasound wave and send and stablize the object that ultrasound wave receives.
The input end of described collection metering circuit 8 is connected with the analog signal output of described ultrasonic sensor 3;
The output terminal of described collection metering circuit 8 is electrically connected with described processor 7;
When the ultrasound wave analog signal transmission extremely described collection metering circuit 8 that ultrasound wave Receiver 32 receives, after described collection metering circuit 8 processes simulating signal is converted into digital signal, be sent to described processor 7, described processor 7 calculates the concentration of current SF6.
Described processor 7 is connected with described hyperbolic curve memory circuit 5 and described temperature sensor 6 respectively.
In order to the interference of temperature drift to accuracy in detection that the change getting rid of temperature produces, temperature variant curve under normal air preserved by described hyperbolic curve memory circuit 5, and the temperature variant curve of different SF6 concentration, described processor 7 is by searching two curves, participate in calculating on the impact of SF6 concentration by Current Temperatures, obtain the current concentration of SF6 accurately.Succinct in order to what design, described temperature sensor 6 and described collection metering circuit 8 are in integrated design.
In sum:
Two calibration curve SF6 concentration sensing devices based on semi-enclosed cavity of the utility model embodiment, by the air hole on shell, SF6 gas collection is diffused in described semi-enclosed cavity, described shell communicates with described semi-enclosed cavity and gas can be enable to be detected fast, described semi-enclosed cavity plays encapsulation ultrasonic sensor and prevents reflection, the interference of diffuse reflection and air-flow, temperature variant curve under described hyperbolic curve memory circuit can preserve normal air, and the temperature variant curve of different SF6 concentration, and calculate current SF6 concentration by described processor reference curve, reduce temperature to the impact of SF6 concentration sensing device.Thus reach the technical purpose of fast accurate detection.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the utility model embodiment, can realize in other embodiments.Therefore, the utility model embodiment can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. the two calibration curve SF6 concentration sensing devices based on semi-enclosed cavity, it is characterized in that, comprise: shell, air hole, ultrasonic sensor, semi-enclosed cavity, hyperbolic curve memory circuit, temperature sensor, processor and collection metering circuit, wherein:
Described air hole is arranged on described shell;
Described shell communicates with described semi-enclosed cavity;
The ultrasound wave emitting head of described ultrasonic sensor and ultrasound wave Receiver are all arranged in described semi-enclosed cavity;
The input end of described collection metering circuit is connected with the analog signal output of described ultrasonic sensor;
The output terminal of described collection metering circuit is electrically connected with described processor;
Described processor is connected with described hyperbolic curve memory circuit and described temperature sensor respectively.
2., as claimed in claim 1 based on two calibration curve SF6 concentration sensing devices of semi-enclosed cavity, it is characterized in that, described semi-enclosed cavity inwall scribbles absorbing material.
3., as claimed in claim 1 based on two calibration curve SF6 concentration sensing devices of semi-enclosed cavity, it is characterized in that, described shell is aluminum alloy material.
4., as claimed in claim 1 based on two calibration curve SF6 concentration sensing devices of semi-enclosed cavity, it is characterized in that, described temperature sensor and described collection metering circuit are integrated design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479046.6U CN204807512U (en) | 2015-07-03 | 2015-07-03 | Two calibration curve SF6 concentration sensing device based on half sealed cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479046.6U CN204807512U (en) | 2015-07-03 | 2015-07-03 | Two calibration curve SF6 concentration sensing device based on half sealed cavity |
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| CN204807512U true CN204807512U (en) | 2015-11-25 |
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| CN201520479046.6U Expired - Fee Related CN204807512U (en) | 2015-07-03 | 2015-07-03 | Two calibration curve SF6 concentration sensing device based on half sealed cavity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064293A (en) * | 2017-06-03 | 2017-08-18 | 常州顺创电气科技有限公司 | SF6 detectors and detection method, compensation method and method of work |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064293A (en) * | 2017-06-03 | 2017-08-18 | 常州顺创电气科技有限公司 | SF6 detectors and detection method, compensation method and method of work |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hebei province Baoding City Xiangyang North 071000 Street No. 2999 Patentee after: Hebei Bo for electrical Limited by Share Ltd Address before: Hebei province Baoding City Xiangyang North 071000 Street No. 2999 Patentee before: Hebei Bowei Electric Co., Ltd. |
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| 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: 20151125 Termination date: 20210703 |