CN203561571U - Device for testing specific surface area by direct contrast method - Google Patents
Device for testing specific surface area by direct contrast method Download PDFInfo
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- CN203561571U CN203561571U CN201320736699.9U CN201320736699U CN203561571U CN 203561571 U CN203561571 U CN 203561571U CN 201320736699 U CN201320736699 U CN 201320736699U CN 203561571 U CN203561571 U CN 203561571U
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- surface area
- specific surface
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- solenoid valves
- detecting device
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Abstract
The utility model discloses a device for testing specific surface area by a direct contrast method. The device comprises an air inlet, an air outlet, a TCD (Thermal Conductivity Detector), two four-way connectors, six solenoid valves, three sample tubes, a liquid nitrogen container and a signal collector. The device for testing specific surface area, provided by the utility model, takes a standard sample with known specific surface area as reference to determine adsorbing capacity of an unknown to-be-tested sample relative to the standard sample, and sequentially obtains the specific surface area of the to-be-tested sample through proportion operation. The device for testing specific surface area is simple in structure, reasonable in design, convenient to operate, capable of quickly analyzing the specific surface area of sample and saving time, capable of expanding test samples, and excellent in expansibility.
Description
Technical field
The utility model relates to a kind of device of testing specific surface area, specifically relates to a kind of device for directly comparing method test specific surface area.
Background technology
Specific surface area refers to the total area that unit mass material has, specific surface area is evaluate catalysts, adsorbent and other porous masses are as asbestos, mineral wool, one of important indicator that zeyssatite and clay class Mineral Industry utilize, assay method has dynamic method, directly comparing method, multiple spot BET method, static capacity method etc., directly comparing method, the principle of the method test is as reference with the standard model of known specific surface, determine the adsorbance of unknown testing sample relative standard sample, thereby testing sample specific surface area is tried to achieve in passing ratio computing, this just need to have corresponding device to complete experiment.
Summary of the invention
The utility model is mainly to solve the existing technical matters of above-mentioned prior art, and a kind of device for directly comparing method test specific surface area is provided.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of device for directly comparing method test specific surface area, comprise air intake opening, gas outlet, TCD detecting device, two four-way interfaces, six solenoid valves, three sample hoses, liquid nitrogen container and signal picker, TCD detecting device is provided with air intake opening and gas outlet, signal picker is connected with TCD detecting device, one end of two four-way valves is connected with TCD detecting device, the other end is connected with three solenoid valves respectively, one end of three sample hoses is connected with a solenoid valve on a four-way valve respectively, the other end is connected with a solenoid valve on another four-way valve respectively, filled with liquid nitrogen in liquid nitrogen container, three sample hoses are placed in liquid nitrogen.During work, in a sample hose therein, place the standard specimen of known surface area, in two other sample hose, place the sample that will test, when test starts, first open two solenoid valves that are connected with the sample hose of placing standard specimen, adsorption gas flow flows into from air intake opening, the standard specimen of flowing through, unnecessary gas flows out from gas vent, standard specimen absorption adsorbed gas, gas composition changes, and TCD detecting device detects the variation of sort signal, and this gas composition change transitions is become to electric signal, be transported to signal acquiring system; Between adsorbed at regular intervals after, close two solenoid valves that are connected with the sample hose of placing standard specimen, open a solenoid valve of placing the sample hose two ends of sample, sample absorption adsorbed gas, gas composition changes, TCD detecting device detects the variation of sort signal, and this gas composition change transitions is become to electric signal, is transported to signal acquiring system; Between adsorbed at regular intervals after, close the solenoid valve that this places the sample hose two ends of sample, open the solenoid valve that another places the sample hose two ends of sample, sample absorption adsorbed gas, gas composition changes, TCD detecting device detects the variation of sort signal, and this gas composition change transitions is become to electric signal, deliver to signal acquiring system, TCD detection system can compare the area of the peak shape of three tests, because the peak area of sample hose is known, so can, by the contrast of peak area, obtain the size of sample specific surface area.
The apparatus structure of the utility model test specific surface area is simple, reasonable in design, easy to operate; Rapidly the specific surface area of analytic sample, save time; Can extend testing sample, favorable expandability.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Description of reference numerals:
In figure, 1 is air intake opening, and 2 is gas outlet, and 3 is TCD detecting device, 4 is a four-way interface, and 5 is No. two four-way interfaces, and 6 is a solenoid valve, 7 is No. two solenoid valves, and 8 is No. three solenoid valves, and 9 is No. four solenoid valves, 10 is No. five solenoid valves, 11 is No. six solenoid valves, and 12 is a sample hose, and 13 is No. two sample hoses, 14 is No. three sample hoses, and 15 is that liquid nitrogen, 16 is that liquid nitrogen container, 17 is signal picker.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1, above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of device for directly comparing method test specific surface area comprises air intake opening 1, gas outlet 2, TCD detecting device 3, a four-way interface 4, No. two four-way interfaces 5, a solenoid valve 6, 7, No. three solenoid valves 8 of No. two solenoid valves, No. four solenoid valves 9, No. five solenoid valves 10, No. six solenoid valves 11, a sample hose 12, No. two sample hoses 13, No. three sample hoses 14, liquid nitrogen container 16 and signal picker 17, in liquid nitrogen container 16, filled with liquid nitrogen 15, and TCD detects 3 and is provided with air intake opening 1 and gas outlet 2, and signal picker 17 is connected with TCD detecting device 3, one end of a four-way valve 4 is connected with TCD detecting device 3, the other end respectively with a solenoid valve 6, No. two solenoid valves 7, No. three solenoid valves 8 connect, and one end of No. two four-way valves 5 is connected with TCD detecting device 3, the other end respectively with No. four solenoid valves 9, No. five solenoid valves 10, No. six solenoid valve 11 connects, one end of a sample hose 12 is connected with a solenoid valve 6 on a four-way valve 4, the other end is connected with No. five solenoid valves 10 on No. two four-way valves 5, one end of No. two sample hoses 13 is connected with No. two solenoid valves 7 on a four-way valve 4, the other end is connected with No. four solenoid valves 9 on No. two four-way valves 5, one end of No. three sample hoses 14 is connected with No. three solenoid valves 8 on a four-way valve 4, and the other end is connected with No. six solenoid valves 11 on No. two four-way valves 5.During work, in a sample hose 12, place the standard specimen of known surface area, in No. two sample hoses 13 and No. three sample hoses 14, place the sample that needs test, when test starts, first a solenoid valve 6 and No. five solenoid valves 10 are opened, adsorption gas flow enters from air intake opening 1, and stream is through standard specimen, and standard specimen adsorbs adsorbed gas, gas composition changes, TCD detecting device 3 detects the variation of sort signal, and this gas composition change transitions is become to electric signal, is transported to signal acquiring system 17; Between at regular intervals, after having adsorbed, a solenoid valve 6 and No. five solenoid valves 10 are closed, No. two solenoid valves 7 and No. four solenoid valves 9 are opened, sample in No. two sample hoses 13 absorption adsorbed gas, same TCD detecting device 3 can detect gas composition and change; Between same at regular intervals, after having adsorbed, No. two solenoid valves 7 and No. four solenoid valve 9 valve closings, No. three solenoid valve 8 connects and No. six solenoid valve 11 valve opens, sample absorption adsorbed gas in No. three sample hoses 14, TCD detecting device 3 can detect gas composition and change, and equally the signal detecting is delivered to signal acquiring system 17.Detection system, TCD detecting device 3 is the area of the peak shape of three tests relatively, because the peak area of standard specimen is known, so can, by the contrast of peak area, obtain the size of sample specific surface area.
The apparatus structure of the utility model test specific surface area is simple, reasonable in design, easy to operate; Rapidly the specific surface area of analytic sample, save time; Can extend testing sample, favorable expandability.
Finally, it should be pointed out that above embodiment is only the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all should think and belong to protection domain of the present utility model.
Claims (3)
1. the device for directly comparing method test specific surface area, comprise air intake opening, gas outlet, TCD detecting device, two four-way interfaces, six solenoid valves, three sample hoses, liquid nitrogen container and signal picker, it is characterized in that described TCD detecting device is provided with air intake opening and gas outlet, signal picker is connected with TCD detecting device, one end of two four-way valves is connected with TCD detecting device, the other end is connected with three solenoid valves respectively, one end of three sample hoses is connected with a solenoid valve on a four-way valve respectively, the other end is connected with a solenoid valve on another four-way valve respectively, filled with liquid nitrogen in liquid nitrogen container, three sample hoses are placed in liquid nitrogen.
2. a kind of device for directly comparing method test specific surface area according to claim 1, is characterized in that described sample hose is U-shaped pipe.
3. a kind of device for directly comparing method test specific surface area according to claim 1, is characterized in that described solenoid valve is direct-acting electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320736699.9U CN203561571U (en) | 2013-11-20 | 2013-11-20 | Device for testing specific surface area by direct contrast method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320736699.9U CN203561571U (en) | 2013-11-20 | 2013-11-20 | Device for testing specific surface area by direct contrast method |
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| Publication Number | Publication Date |
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| CN203561571U true CN203561571U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320736699.9U Expired - Fee Related CN203561571U (en) | 2013-11-20 | 2013-11-20 | Device for testing specific surface area by direct contrast method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122337A (en) * | 2014-07-04 | 2014-10-29 | 北京精微高博科学技术有限公司 | Multi-station serial linkage nitrogen adsorption specific surface instrument and specific surface measurement method |
| CN109269449A (en) * | 2018-10-12 | 2019-01-25 | 重庆大学 | Stockpile specific surface area test method |
| WO2020034545A1 (en) * | 2018-12-06 | 2020-02-20 | 中国科学院广州能源研究所 | Method for measuring specific surface area and adsorptive capacity of gas hydrate |
| CN113866070A (en) * | 2021-11-19 | 2021-12-31 | 郑州大学 | Device and method for measuring micro surface area of macroporous material |
-
2013
- 2013-11-20 CN CN201320736699.9U patent/CN203561571U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122337A (en) * | 2014-07-04 | 2014-10-29 | 北京精微高博科学技术有限公司 | Multi-station serial linkage nitrogen adsorption specific surface instrument and specific surface measurement method |
| CN104122337B (en) * | 2014-07-04 | 2016-03-30 | 北京精微高博科学技术有限公司 | Multi-station serial linkage nitrogen adsorption specific surface instrument and specific surface measurement method |
| CN109269449A (en) * | 2018-10-12 | 2019-01-25 | 重庆大学 | Stockpile specific surface area test method |
| CN109269449B (en) * | 2018-10-12 | 2020-07-31 | 重庆大学 | Method for testing specific surface area of rockfill |
| WO2020034545A1 (en) * | 2018-12-06 | 2020-02-20 | 中国科学院广州能源研究所 | Method for measuring specific surface area and adsorptive capacity of gas hydrate |
| CN113866070A (en) * | 2021-11-19 | 2021-12-31 | 郑州大学 | Device and method for measuring micro surface area of macroporous material |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20151120 |
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| EXPY | Termination of patent right or utility model |