CN216622140U - Sulfur hexafluoride detection system capable of conducting tail gas treatment - Google Patents
Sulfur hexafluoride detection system capable of conducting tail gas treatment Download PDFInfo
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- CN216622140U CN216622140U CN202123301985.6U CN202123301985U CN216622140U CN 216622140 U CN216622140 U CN 216622140U CN 202123301985 U CN202123301985 U CN 202123301985U CN 216622140 U CN216622140 U CN 216622140U
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Abstract
The utility model discloses a sulfur hexafluoride detection system capable of carrying out tail gas treatment, which comprises a gas chamber, a detection device and a tail gas treatment device, wherein the detection device is connected with the gas chamber; the tail gas treatment device comprises a first treatment container, a second treatment container, a first communicating pipe, a second communicating pipe and a third communicating pipe; a spray head for spraying alkali liquor and a liquid containing area for containing the alkali liquor are arranged in the first treatment container, and a plurality of adsorption filtering layers are arranged in the second treatment container along the gas flowing direction; the air inlet end of the first communicating pipe is connected with the air outlet of the air chamber, the air outlet end of the first communicating pipe is connected with the air inlet of the first processing container, the air inlet end of the second communicating pipe is connected with the air outlet of the first processing container, the air outlet end of the second communicating pipe is connected with the air inlet of the second processing container, the air inlet end of the third communicating pipe is connected with the air outlet of the first processing container, and the air outlet end of the third communicating pipe is of an open structure. The utility model can purify the sampling gas after the sulfur hexafluoride detection is finished, and the aim of non-toxic emission is achieved.
Description
Technical Field
The utility model relates to the field of gas detection, in particular to a sulfur hexafluoride detection system capable of carrying out tail gas treatment.
Background
Sulfur hexafluoride (SF) produced annually worldwide today6) Of the gases, more than about half are used in the power industry; in the power industry, high-voltage switchgear accounts for more than about 80% of the gas consumption; the gas consumption of the medium-voltage switch is about 1/10, and the medium-voltage switch is mainly used in a high-voltage region of 126-252 kV and an ultrahigh-voltage region of 330-800 kV, particularly a breaker of 126 kV-252 kV-550 kV, a closed combined electrical appliance, an inflatable cabinet and a pipeline bus.
At present, the regulations in the power industry require periodic detection, state evaluation and technical supervision on sulfur hexafluoride electrical equipment, one of which is to detect the content of sulfur hexafluoride, and the commonly used method is shown in patent CN 108287147 a or patent CN 109283156 a; although the detection method is various, no matter how to analyze the sampled gas, the gas needs to be collected and then analyzed, and after the analysis is finished, the sampled gas is mostly directly emptied; since toxic gases such as sulfur fluoride, hydrogen fluoride and the like are often reduced in the sampled gas, the direct evacuation treatment mode easily causes pollution and damage to the living environment of human beings.
Therefore, a sulfur hexafluoride detection system capable of performing tail gas treatment is needed to purify the sampled gas after sulfur hexafluoride detection is completed, so that the purpose of non-toxic emission is achieved.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a sulfur hexafluoride detection system capable of performing tail gas treatment, so as to purify a sampled gas after sulfur hexafluoride detection is completed, thereby achieving the purpose of non-toxic emission.
In order to achieve the above object, the present invention particularly provides a sulfur hexafluoride detection system capable of performing tail gas treatment, including a gas chamber for storing sampled gas, a detection device for detecting the concentration of sulfur hexafluoride in the sampled gas, and a tail gas treatment device; the tail gas treatment device comprises a first treatment container, a second treatment container, a first communicating pipe, a second communicating pipe and a third communicating pipe; a spray head for spraying alkali liquor and a liquid containing area for containing the alkali liquor are arranged in the first treatment container, and a plurality of adsorption filter layers are arranged in the second treatment container along the gas flowing direction;
the gas inlet end of the first communicating pipe is connected with the gas outlet of the gas chamber, the gas outlet end of the first communicating pipe is connected with the gas inlet of the first processing container, the gas inlet end of the second communicating pipe is connected with the gas outlet of the first processing container, the gas outlet end of the second communicating pipe is connected with the gas inlet of the second processing container, the gas inlet end of the third communicating pipe is connected with the gas outlet of the first processing container, and the gas outlet end of the third communicating pipe is of an open structure.
As a further improvement of the technical scheme of the utility model, the spray heads are arranged on the transfusion pipeline extending into the first treatment container, and the number of the spray heads is more than two.
As a further improvement of the technical scheme of the utility model, a liquid outlet communicated with the liquid containing area is arranged on the first processing container, and the liquid outlet is connected with a sealing valve.
As a further improvement of the technical scheme of the utility model, the first treatment container is provided with a circulating port communicated with the liquid placing area, the liquid outlet end of the circulating port is connected with the liquid inlet end of a circulating pump, and the liquid outlet end of the circulating pump is communicated with the liquid conveying pipeline through a circulating pipeline.
As a further improvement to the technical scheme of the utility model, the adsorption filtration layer is formed by molecular sieves distributed in the support plate.
As a further improvement of the technical scheme of the utility model, the gas inlet and the gas outlet of the first processing container are both positioned between the spray head and the liquid holding area, and the gas inlet of the first processing container is higher than the gas outlet thereof.
As a further improvement of the technical solution of the present invention, the gas inlet of the second processing container is located below the adsorption and filtration layer, and the gas outlet of the second processing container is located above the adsorption and filtration layer.
As a further improvement of the technical scheme of the utility model, the first communicating pipe and the third communicating pipe are provided with regulating valves for regulating the gas flow in the pipeline, the regulating valves are of electric control valve structures and are both connected to a controller, and the controller is electrically connected with the detection device.
As a further improvement of the technical scheme of the utility model, a fan used for promoting the outflow of the sampling gas in the gas chamber is arranged in the gas chamber.
As a further improvement of the technical solution of the present invention, the detection device includes a processor, and a distributed feedback laser, a photodetector and a display connected to the processor, wherein the processor is used for data processing and signal control, the distributed feedback laser is used for emitting a laser beam with a set wavelength into the gas chamber, the photodetector is used for performing harmonic detection on an absorption signal generated after the laser beam passes through the gas chamber, and the display is used for data display.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the sulfur hexafluoride detection system capable of processing tail gas, the first processing container and the second processing container are both of sealed container structures, sampling gas in the gas chamber is forced to flow through the connection of the first communicating pipe, the second communicating pipe and the third communicating pipe, the sampling gas is sequentially purified by alkali liquor and an adsorption filter layer in the flowing process, and finally nontoxic gas is discharged; therefore, the system can purify the sampling gas after the sulfur hexafluoride detection is finished, and the aim of non-toxic emission is fulfilled.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic block diagram of the detection apparatus of the present invention.
Detailed Description
The technical scheme in the embodiment of the utility model will be clearly and completely described below with reference to the accompanying drawings; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Examples
As shown in fig. 1: the sulfur hexafluoride detection system capable of performing tail gas treatment provided by the embodiment comprises a gas chamber 1 for storing sampled gas, a detection device 2 for detecting the concentration of sulfur hexafluoride in the sampled gas, and a tail gas treatment device; the tail gas treatment device comprises a first treatment container 3, a second treatment container 4, a first communicating pipe 5, a second communicating pipe 6 and a third communicating pipe 7; a spray head 31 for spraying alkali liquor and a liquid containing area 32 for containing the alkali liquor are arranged in the first treatment container 3, and a plurality of adsorption filter layers 41 are arranged in the second treatment container 4 along the gas flowing direction; the air inlet end of the first communicating pipe 5 is connected with the air outlet of the air chamber 1, the air outlet end of the first communicating pipe is connected with the air inlet of the first processing container 3, the air inlet end of the second communicating pipe 6 is connected with the air outlet of the first processing container 3, the air outlet end of the second communicating pipe is connected with the air inlet of the second processing container 4, the air inlet end of the third communicating pipe 7 is connected with the air outlet of the first processing container, and the air outlet end of the third communicating pipe is of an open structure (capable of being communicated with the atmosphere).
The gas chamber 1 may be provided with a gas inlet, and when the system is used for experimental operation, the sampling gas may be filled into the gas chamber 1 as required. The detecting unit 2 may have a structure as shown in patent CN 108287147 a or CN 109283156 a. The first processing container 3 and the second processing container 4 are both of a sealed container structure, and the sampling gas in the gas chamber 1 forcibly flows through the connection of the first communicating pipe 5, the second communicating pipe 6 and the third communicating pipe 7, and is purified by alkali liquor and the adsorption filter layer 41 in sequence in the flowing process, and finally, nontoxic gas is discharged. The spray head 31 can spray alkaline solution, and toxic decomposition products (such as sulfur tetrafluoride) in sulfur hexafluoride gas can react with the alkaline solution to be removed; the adsorption and filtration layer 41 may be formed of molecular sieves distributed in a support plate, the support plate being transversely fixed to the inner wall of the second processing container 4, the molecular sieves being capable of adsorbing toxic decomposition products in the sulfur hexafluoride gas; the number of the adsorption filtration layer 41 may be determined as needed.
In this embodiment, the air inlet and the air outlet of the first processing container 3 are both located between the spray head 31 and the liquid holding area 32, and the air inlet of the first processing container 3 is higher than the air outlet thereof; the air inlet of the second processing container 4 is positioned below the adsorption and filtration layer 41, and the air outlet of the second processing container 4 is positioned above the adsorption and filtration layer 41.
In addition, the first communicating pipe 5 and the third communicating pipe 7 can be provided with a regulating valve 8 for regulating the gas flow in the pipeline, and the regulating valve 8 on the first communicating pipe 5 can be closed in the detection stage, so that the outflow of the sampling gas is avoided; when the system is idle, the regulating valves 8 on the first communicating pipe 5 and the third communicating pipe 7 can be closed, so that the outside gas is prevented from entering the sealed container. Preferably, the regulating valves 8 are of an electric control valve structure and are connected to a controller (not shown in the figure), and the controller is electrically connected with the detection device 2; the controller can be a single chip microcomputer, and can control the automatic opening and closing of the regulating valve 8 through signal feedback of the detection device 2, so that automatic control is favorably realized.
In this embodiment, the spray heads 31 are installed on the liquid supply line 33 extending into the first processing container 3, and the number of the spray heads 31 is two or more, so that the plurality of spray heads 31 can be uniformly arranged. The first treatment container 3 is provided with a liquid outlet 34 communicated with the liquid holding area 32, the liquid outlet 34 is connected with a sealing valve 35, waste alkali liquor can be discharged through the liquid outlet 34, and the sealing valve 35 is used for sealing the liquid outlet 34. Meanwhile, in order to fully utilize the alkali liquor, the alkali liquor can form a circulating flow state, at the moment, a circulating port 36 communicated with the liquor holding area 32 is further arranged on the first treatment container 3, the liquor outlet end of the circulating port 36 is connected with the liquor inlet end of a circulating pump 37, and the liquor outlet end of the circulating pump 37 is communicated with the liquor conveying pipeline 33 through a circulating pipeline 38; at this time, when in use, a proper amount of alkali liquor can be filled into the liquor-holding area 32, and the circulating pump 37 is started during treatment.
In this embodiment, a fan 9 for causing the sampling gas in the gas chamber 1 to flow out is arranged in the gas chamber 1; the fan 9 can be arranged at the bottom of the air chamber 1, and the fan blade of the fan is over against the air outlet of the air chamber 1; the fan 9 can provide flow power for the gas in the gas chamber 1 when being started.
In this embodiment, the detection apparatus 2 includes a processor 21, and a distributed feedback laser 22 (i.e., a DFB laser), a photodetector 23, and a display 24 connected to the processor 21, where the processor 21 is configured to process data and control signals, the distributed feedback laser 22 is configured to emit a laser beam with a set wavelength into the gas chamber 1, the photodetector 23 is configured to perform harmonic detection on an absorption signal generated after the laser beam passes through the gas chamber 1, and the display 24 is configured to display data. The detection device 2 can be connected with the air chamber 1; the processor 21 may be, for example, a DSP main control board, the distributed feedback laser 22 and the display 24 are connected to a signal output end of the processor 21, and the photodetector 23 is connected to a signal input end of the processor 21; the detection device 2 makes the injection current of the distributed feedback laser 22 receive the combined action of a slowly-changing scanning sawtooth signal and a rapidly-changing sine signal through a wavelength modulation technology in a TDLAS gas detection technology, so that the output wavelength of the distributed feedback laser 22 is tuned near the absorption peak of the gas, the light beam generates an absorption signal after passing through the gas chamber 1, the signal can be subjected to harmonic detection by utilizing a photoelectric detection technology and a phase-locked amplification technology, a second harmonic signal is demodulated to obtain gas absorption information, data processing is performed through a high-speed A/D conversion postprocessor 21, finally, the detection device 2 is utilized to repeatedly carry out experiments to calibrate the gas, and a calibration program is manufactured, so that the conversion of a detection value and a real concentration value is facilitated.
In this embodiment, each power consuming component can be powered by the mains supply.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The utility model provides a sulfur hexafluoride detecting system that can carry out exhaust-gas treatment, includes the gas chamber that is used for saving the sampled gas and is arranged in detecting means who detects sulfur hexafluoride concentration in the sampled gas which characterized in that:
the system also includes a tail gas treatment device; the tail gas treatment device comprises a first treatment container, a second treatment container, a first communicating pipe, a second communicating pipe and a third communicating pipe; a spray head for spraying alkali liquor and a liquid containing area for containing the alkali liquor are arranged in the first treatment container, and a plurality of adsorption filter layers are arranged in the second treatment container along the gas flowing direction;
the gas inlet end of the first communicating pipe is connected with the gas outlet of the gas chamber, the gas outlet end of the first communicating pipe is connected with the gas inlet of the first processing container, the gas inlet end of the second communicating pipe is connected with the gas outlet of the first processing container, the gas outlet end of the second communicating pipe is connected with the gas inlet of the second processing container, the gas inlet end of the third communicating pipe is connected with the gas outlet of the first processing container, and the gas outlet end of the third communicating pipe is of an open structure.
2. The sulfur hexafluoride detection system capable of tail gas treatment according to claim 1, wherein:
the spray heads are arranged on the infusion pipeline extending into the first processing container, and the number of the spray heads is more than two.
3. The sulfur hexafluoride detection system capable of tail gas treatment according to claim 2, wherein:
and a liquid outlet communicated with the liquid containing area is formed in the first treatment container, and the liquid outlet is connected with a sealing valve.
4. The sulfur hexafluoride detection system capable of conducting tail gas treatment according to claim 2, wherein:
the first treatment container is provided with a circulation port communicated with the liquid containing area, the liquid outlet end of the circulation port is connected with the liquid inlet end of a circulation pump, and the liquid outlet end of the circulation pump is communicated with the liquid conveying pipeline through a circulation pipeline.
5. The sulfur hexafluoride detection system capable of tail gas treatment according to claim 1, wherein:
the adsorption filtration layer is formed by molecular sieves distributed in the support plate.
6. The sulfur hexafluoride detection system capable of tail gas treatment according to claim 1, wherein:
the air inlet and the air outlet of the first processing container are both positioned between the spray head and the liquid containing area, and the air inlet of the first processing container is higher than the air outlet of the first processing container.
7. The sulfur hexafluoride detection system capable of tail gas treatment according to claim 1, wherein:
the air inlet of the second treatment container is positioned below the adsorption and filtration layer, and the air outlet of the second treatment container is positioned above the adsorption and filtration layer.
8. The sulfur hexafluoride detection system capable of tail gas treatment according to claim 1, wherein:
the gas flow regulating device is characterized in that the first communicating pipe and the third communicating pipe are provided with regulating valves for regulating gas flow in the pipelines, the regulating valves are of electric control valve structures and are connected to a controller, and the controller is electrically connected with the detection device.
9. The sulfur hexafluoride detection system according to any one of claims 1 to 8, wherein:
the air chamber is internally provided with a fan used for promoting the sampling gas in the air chamber to flow out.
10. The sulfur hexafluoride detection system according to any one of claims 1 to 8, wherein:
the detection device comprises a processor, a distributed feedback laser, a photoelectric detector and a display, wherein the distributed feedback laser, the photoelectric detector and the display are connected to the processor, the processor is used for data processing and signal control, the distributed feedback laser is used for emitting laser beams with set wavelengths into the air chamber, the photoelectric detector is used for carrying out harmonic detection on absorption signals generated after the laser beams pass through the air chamber, and the display is used for data display.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123301985.6U CN216622140U (en) | 2021-12-24 | 2021-12-24 | Sulfur hexafluoride detection system capable of conducting tail gas treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123301985.6U CN216622140U (en) | 2021-12-24 | 2021-12-24 | Sulfur hexafluoride detection system capable of conducting tail gas treatment |
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| CN216622140U true CN216622140U (en) | 2022-05-27 |
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| CN202123301985.6U Active CN216622140U (en) | 2021-12-24 | 2021-12-24 | Sulfur hexafluoride detection system capable of conducting tail gas treatment |
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