CN211936225U - Device for evaluating adsorption performance of adsorbent on SF6 gas - Google Patents
Device for evaluating adsorption performance of adsorbent on SF6 gas Download PDFInfo
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- CN211936225U CN211936225U CN201922019024.2U CN201922019024U CN211936225U CN 211936225 U CN211936225 U CN 211936225U CN 201922019024 U CN201922019024 U CN 201922019024U CN 211936225 U CN211936225 U CN 211936225U
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Abstract
Adsorbent pair SF6The gas adsorption performance evaluation device comprises a gas source, a mass flow controller, an adsorption column, a gas concentration sensor and a needle valve; the gas source outlet is connected with the gas inlet of the mass flow controller through a gas pipeline, the output port of the mass flow controller is connected with the gas inlet at the bottom end of the adsorption column, the gas outlet at the top of the adsorption column is connected with two gas pipelines, wherein a gas concentration sensor is arranged on the first branch pipeline, and a needle valve is arranged on the second branch pipeline. The gas source has SF with known concentration6Mixing with air. The adsorption column is filled with molecular sieve adsorbent or multiple combined adsorbents. The gas concentration sensor is SF6A gas concentration sensor. The utility model has simple structureSimple operation, and can be used for judging SF by different adsorbents6The adsorption performance of the gas can be evaluated, and the adsorption performance of other gas adsorbents can also be evaluated.
Description
Technical Field
The utility model belongs to the technical field of gas filtration, purification and purification, concretely relates to adsorbent is to SF6A gas adsorption performance evaluation device.
Background
SF6The gas is used as an insulating and arc extinguishing medium which is absolutely dominant in a system with a voltage level of 110 kV and above, but has an extremely strong greenhouse effect. Related policies or regulations, such as the kyoto protocol, the fluorine-containing greenhouse gas regulations, the paris agreement (2016), and the like, have proposed controlling greenhouse gas emissions, with the paris agreement deciding to make the greatest possible effort to slow down before 2020. SF in electrical equipment6The gas can be recovered through a recovery device, the discharge is reduced, and SF is inevitably generated in the recovery process6Leakage of gas, especially in enclosed spaces, incomplete recovery of electrical equipment can also cause SF6Gas leakage into the space, SF diffusing into the space6The gas is required to pass through an adsorbent to recover SF in the air6The gas is adsorbed and then desorbed by the adsorbent to recover the leaked SF in the space6The purpose of the gas.
Adsorption of SF in spaces with adsorbents6The core of the gas is to select one to SF6An adsorbent excellent in gas adsorption performance. At the present stage, how to evaluate the adsorption performance of the adsorbent does not have a standard method or equipment, and the adsorption performance is difficult to evaluate only by relying on adsorption parameters or indexes provided by manufacturers when the adsorbent is purchased, which relates to the mixed adsorption condition of a plurality of adsorbents. The device of the invention is used for evaluating the SF by the adsorbent6And (4) adsorption performance.
SUMMERY OF THE UTILITY MODEL
The utility model provides an absorbent to SF for solving the disadvantages in the prior art6Evaluation device of gas adsorption performance.
In order to solve the technical problem, the utility model adopts the following technical scheme: adsorbent pair SF6The gas adsorption performance evaluation device comprises a gas source, a mass flow controller, an adsorption column, a gas concentration sensor and a needle valve; the gas source outlet is connected with the gas inlet of the mass flow controller through a gas pipeline, the output port of the mass flow controller is connected with the gas inlet at the bottom end of the adsorption column, the gas outlet at the top of the adsorption column is connected with two gas pipelines,wherein, the first branch pipeline is provided with a gas concentration sensor, and the second branch pipeline is provided with a needle valve.
The gas source has SF with known concentration6Mixing with air.
The adsorption column is filled with molecular sieve adsorbent or multiple combined adsorbents.
The gas concentration sensor is SF6A gas concentration sensor.
The mass flow controller adopts a high-precision mass flow controller.
By adopting the technical scheme, the adsorption column is used for filling and adsorbing SF6An adsorbent for the gas. First, a certain weight of adsorbent is weighed and placed in an adsorption column. Secondly, the output flow of the mass flowmeter is set, then the gas source is opened and the SF of the gas outlet of the adsorption column is recorded6The measurement value of the gas concentration sensor. SF in mixed gas provided by gas source6The gas concentration is known, and after the mixed gas flows through the adsorption column, SF6The gas is adsorbed, and SF at the gas outlet of the adsorption column6Measurement of gas concentration sensor and SF of gas source6When the gas concentrations are consistent, the adsorbent reaches a saturated state. The mass flow meter can control the output gas flow. When the type and weight of the adsorbent are fixed, the lower the concentration measured by the measuring sensor is, the better the adsorbability of the adsorbent is; higher concentrations measured by the measurement sensor indicate lower performance of the adsorbent. This device can be used to determine the different adsorbent pairs SF6Adsorption properties of the gas.
When a single adsorbent is filled in the adsorption column, the performance of the single adsorbent is measured; when a combination of a plurality of adsorbents is packed in the adsorption column, the performance of the combined adsorbent is measured.
The gas pipeline provided with the needle valve is used as a vacuum-pumping port, the adsorbent is vacuumized through the port before operation, and gas adsorbed in the adsorbent is discharged, so that the performance of the adsorbent is prevented from being influenced.
To sum up, the utility model discloses simple structure, it is easy and simple to handle, can be used to judge different adsorbents to SF6Adsorption properties of the gas.It not only can evaluate different adsorbents against SF6The adsorption performance of the gas can be evaluated, and the adsorption performance of other gas adsorbents can also be evaluated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, the adsorbent of the present invention is used for SF6The gas adsorption performance evaluation device comprises a gas source 1, a mass flow controller 3, an adsorption column 4, a gas concentration sensor 9 and a needle valve 10; an outlet of the gas source 1 is connected with a gas inlet of the mass flow controller 3 through a gas pipeline 2, an output port of the mass flow controller 3 is connected with a gas inlet 5 at the bottom end of the adsorption column 4, a gas outlet 6 at the top of the adsorption column 4 is connected with two gas pipelines, a gas concentration sensor 9 is arranged on one pipeline 7, and a needle valve 10 is arranged on the other pipeline 8.
The gas source 1 has known concentration of SF6Mixing with air.
The adsorption column 4 is filled with molecular sieve adsorbent or a plurality of combined adsorbents.
The gas concentration sensor 9 is SF6A gas concentration sensor.
The mass flow controller 3 adopts a high-precision mass flow controller.
In FIG. 1, the adsorption column 4 is used for packing and adsorbing SF6An adsorbent for the gas. First, a certain weight of the adsorbent is weighed and placed in the adsorption column 4. Secondly, the output flow of the mass flow meter 3 is set, then the gas source 1 is opened and the recording of the SF at the gas outlet of the adsorption column 4 is started6The measured value of the gas concentration sensor 9. SF in the mixed gas provided by the gas source 16The gas concentration is known, and after the mixed gas flows through the adsorption column 4, SF6The gas is adsorbed, and SF is generated at the gas outlet of the adsorption column 46The measured value of the gas concentration sensor 9 and the SF of the gas source6When the gas concentrations are consistent, the adsorbent reaches a saturated state. The mass flow meter 3 can control the output gas flow rate. When the type and weight of the adsorbent are fixed, the lower the concentration measured by the measuring sensor 9 is, the better the adsorbability of the adsorbent is; measured by the measuring sensor 9A higher concentration of (a) indicates a lower performance of the adsorbent. This device can be used to determine the different adsorbent pairs SF6Adsorption properties of the gas.
When a single adsorbent is filled in the adsorption column, the performance of the single adsorbent is measured; when a combination of a plurality of adsorbents is packed in the adsorption column, the performance of the combined adsorbent is measured.
The gas line 8 provided with the needle valve 10 serves as a vacuum port through which the adsorbent is evacuated prior to operation to remove adsorbed gas from the adsorbent to avoid affecting the performance of the adsorbent.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (5)
1. Adsorbent pair SF6An apparatus for evaluating gas adsorption performance, comprising: comprises a gas source, a mass flow controller, an adsorption column, a gas concentration sensor and a needle valve; the gas source outlet is connected with the gas inlet of the mass flow controller through a gas pipeline, the output port of the mass flow controller is connected with the gas inlet at the bottom end of the adsorption column, the gas outlet at the top of the adsorption column is connected with two gas pipelines, wherein a gas concentration sensor is arranged on the first branch pipeline, and a needle valve is arranged on the second branch pipeline.
2. The sorbent pair SF according to claim 16An apparatus for evaluating gas adsorption performance, comprising: the gas source has SF with known concentration6Mixing with air.
3. The sorbent pair SF according to claim 16An apparatus for evaluating gas adsorption performance, comprising: the adsorption column is filled with molecular sieve adsorbent or multiple combined adsorbents.
4. According to claim 1The adsorbent pair SF6An apparatus for evaluating gas adsorption performance, comprising: the gas concentration sensor is SF6A gas concentration sensor.
5. The sorbent pair SF according to claim 16An apparatus for evaluating gas adsorption performance, comprising: the mass flow controller adopts a high-precision mass flow controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922019024.2U CN211936225U (en) | 2019-11-21 | 2019-11-21 | Device for evaluating adsorption performance of adsorbent on SF6 gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922019024.2U CN211936225U (en) | 2019-11-21 | 2019-11-21 | Device for evaluating adsorption performance of adsorbent on SF6 gas |
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| CN211936225U true CN211936225U (en) | 2020-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115598037A (en) * | 2022-11-22 | 2023-01-13 | 武汉大学（Cn） | Experimental device and characterization method for dynamic adsorption characteristics of harmful decomposition products of insulating gas |
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2019
- 2019-11-21 CN CN201922019024.2U patent/CN211936225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115598037A (en) * | 2022-11-22 | 2023-01-13 | 武汉大学（Cn） | Experimental device and characterization method for dynamic adsorption characteristics of harmful decomposition products of insulating gas |
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