CN200941089Y - Spekker absorptiometer - Google Patents
Spekker absorptiometer Download PDFInfo
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- CN200941089Y CN200941089Y CN 200520034893 CN200520034893U CN200941089Y CN 200941089 Y CN200941089 Y CN 200941089Y CN 200520034893 CN200520034893 CN 200520034893 CN 200520034893 U CN200520034893 U CN 200520034893U CN 200941089 Y CN200941089 Y CN 200941089Y
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- valve
- gas
- transfer valve
- concentration sensor
- transfer
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Abstract
The utility model relates to a powder specific surface area measuring device, especially to a gas-adsorption powder specific surface area measuring device. The installation of a carrier gas stable-flow valve (2), an adsorbate gas stable-flow valve (4) and a switch valve A (6), switch valve B (7), an injection sampler and the interface (8) as well as a switch valve C (9), a switch valve D (12), a switch valve E (15) and a switch valve F (18) makes the device have stable air flow without being effected by gas load variation. In the process of testing, the standard air volume of the utility model can be dynamically adjusted with free and more than two samples can be measured accurately at the same time, which is simply operated with more accurate and stable measurement.
Description
Technical field the utility model is about powder specific surface area tester, especially about gas absorption formula powder specific surface area tester.
Background technology is in existing gas absorption formula powder specific surface area tester, technical employing throttling valve comes the adjustments of gas flow, make that this instrument takes off at gas, in the adsorption process because gas load produces the gas flow fluctuation when changing, the mixed gas ratio changes, and then influences precision of test result and stability of instrument; Secondly, prior art adopts solid volumetric standard pipe, with the adsorbate gas that is full of in the pipe as standard, because the specification of this standard pipe is limited, make in the test process and can not dynamically adjust capacity, and standard pipe is changed trouble: the 3rd, prior art in order once simultaneously to survey several samples more, adopt the mode of direct serial or parallel connection, combination gas enters each sample test cell simultaneously, causes the increase of test error.
The summary of the invention the purpose of this utility model provides a kind of gas flow to be stablized, not influenced by the gas load variations, and two powder specific surface area testers with individual sample can dynamically be adjusted, once can accurately be tested to the standard gas capacity in the test process.
The purpose of this powder specific surface area tester that the utility model provides is achieved in that in the front of gas concentration sensor A installs carrier gas flow stabilizing valve and adsorbate gas flow stabilizing valve, in the back of gas concentration sensor A and the front of gas concentration sensor B transfer valve A, transfer valve B, injecting type injector and interface, transfer valve C, testing tube A, liquid nitrogen container A, transfer valve D, transfer valve F, testing tube B, liquid nitrogen container B, transfer valve E are installed, and make testing tube A, testing tube B divide sequencing and gas circuit UNICOM.
This powder specific surface area tester that the utility model provides is connected in gas concentration sensor A behind the carrier gas flow stabilizing valve by the carrier gas flow stabilizing valve with carrier gas access port and by gas pipeline, transfer valve C, testing tube A, liquid nitrogen container A, transfer valve D, gas concentration sensor B, gas meter, between carrier gas flow stabilizing valve and the gas concentration sensor A branch road gas pipeline being housed is connected with the adsorbate gas flow stabilizing valve with adsorbate gas access port, the other end of adsorbate gas access port is equipped with throttling valve, the back of throttling valve connects by gas pipeline is equipped with logical air interface, transfer valve B, transfer valve A, the other end of transfer valve A is connected on the gas piping between gas concentration sensor A and the transfer valve C, and communicate, between transfer valve A and the transfer valve B injecting type injector and interface are housed, in the rear end of the front end of transfer valve C and transfer valve D another are housed and have transfer valve F, testing tube B, liquid nitrogen container B, test branch road that being used for of transfer valve E tests sample B and Treatment Analysis gas concentration variable signal and the computing machine that outputs test result are formed.
The carrier gas access port is the carrier gas inlet of carrier gas flow stabilizing valve, uses He (helium) to do carrier gas usually.
The effect of carrier gas flow stabilizing valve is to regulate, stablize carrier gas flux.
Adsorbate gas access port is the adsorbate gas feed of adsorbate gas flow stabilizing valve, uses N2 (nitrogen) as adsorbate gas usually.
The effect of adsorbate gas flow stabilizing valve is to regulate, stablize the adsorbate gas flow.
The effect of gas concentration sensor A, gas concentration sensor B is to survey through before and after the testing tube, and the gas concentration before and after the adsorption/desorption changes, and its variable signal is converted to electric signal and is sent to computing machine carries out analyzing and processing.
The effect of transfer valve A, transfer valve B, transfer valve C, transfer valve D, transfer valve E, transfer valve F is to cut off or connect gas circuit.Transfer valve A, transfer valve B can use six-way valve, solenoid valve, and transfer valve C, transfer valve D, transfer valve E, transfer valve F can use six-way valve, solenoid valve, hand valve.
Injecting type injector and interface are variable volumes, are used to extract, inject the gas that preestablishes the volume number.
The effect of testing tube A, testing tube B is difference splendid attire powder A to be measured, powder B to be measured.
The effect of gas meter is to show gas flow.
The effect of liquid nitrogen container A, liquid nitrogen container B be respectively testing tube A, testing tube B provides low-temperature receiver, reduce temperature, make powder produce cryosorption to gas, adsorb saturated after, remove liquid nitrogen container A or liquid nitrogen container B, because temperature recovery, powder begins desorption to gas, and difference appears in the signal of gas concentration sensor A, gas concentration sensor B.
The effect of logical air interface is that gas is entered in the atmosphere.
The effect of throttling valve is to regulate the adsorbate gas flow.
The advantage of this powder specific surface area tester that the utility model provides is: gas flow is stablized, not influenced by the gas load variations, and the standard gas volume can carry out arbitrarily dynamically adjusting in the test process, once can accurately test two above samples, operate easylier, it is more accurate, stable to test.
Appended drawings is the structural representation of this powder specific surface area tester that provides of the utility model, wherein carrier gas access port (1), carrier gas flow stabilizing valve (2), adsorbate gas access port (3), adsorbate gas flow stabilizing valve (4), gas concentration sensor A (5), transfer valve A (6), transfer valve B (7), injecting type injector and interface (8), transfer valve C (9), testing tube A (10), liquid nitrogen container A (11), transfer valve D (12), gas concentration sensor B (13), gas meter (14), transfer valve E (15), liquid nitrogen container B (16), testing tube B (17), transfer valve F (18), logical air interface (19), throttling valve (20).
Embodiment is below in conjunction with accompanying drawing, introduces an embodiment of this powder specific surface area test that the utility model provides.At first instrument is regulated stand-by, powder sample to be measured is respectively charged into testing tube A (10), testing tube B (17), set up the flow of carrier gas and adsorbate gas then, with transfer valve A (6), transfer valve B (7) connects, and with transfer valve C (9), transfer valve D (12) connects, transfer valve E (15), transfer valve F (18) keeps disconnecting, with liquid nitrogen container A (11) move to testing tube A (10) around, the powder of splendid attire in testing tube A (10) begins to adsorb adsorbate gas in the combination gas as adsorbent, and the concentration of adsorbate gas in the combination gas is changed, at this moment the signal that detects of gas concentration sensor B (13) changes, and between the gas concentration sensor A (5) as benchmark difference signal appears, after adsorption process finishes, move apart testing tube A (10) with being about to liquid nitrogen container A (11), because the rise of temperature, the adsorbate gas that is adsorbed by powder begins desorption, make the signal of gas concentration sensor B (13) and the signal of gas concentration sensor A (5) difference occur equally, finish until desorption; Again according to absorption, the desorption signal size, select the volume number of injecting type injector and interface (8), extract the adsorbate gas of selected volume number, then the adsorbate gas that extracts is injected, make adsorbate gas concentration variation in the combination gas, at this moment survey the response that draws known volume (volume) gas by gas concentration sensor B (13), this response signal can draw the volume of powder sample absorption adsorbate gas as benchmark through Computer Processing.Change different carrier gas, the dividing potential drop of adsorbate gas, repeat aforementioned operation, just can test out powder sample and depress the amount of absorption, desorption adsorbate gas, and finally measure the specific surface area of the interior powder sample of testing tube A (10) at the difference branch.Under the situation that does not change transfer valve A (6), transfer valve B (7) state, transfer valve 1 (9), transfer valve D (12) are adjusted into disconnection, transfer valve E (15), transfer valve F (18) are adjusted into connection, testing tube B (17), liquid nitrogen container B (16) are repeated operations such as aforementioned absorption, desorption, can measure the specific surface area of the interior powder sample of testing tube B (17).
Rear end at front end and the transfer valve D (12) of transfer valve C (9) can connect the test branch road more than a tunnel and a tunnel more side by side, can realize the test to 3 and 3 above powder sample powder specific surface areas.
Claims (2)
1, a kind of powder specific surface area tester, by carrier gas access port (1) and the gas concentration sensor A (5) after being connected in by gas pipeline, testing tube A (10), liquid nitrogen container A (11), gas concentration sensor B (13), gas meter (14), testing tube B (17), liquid nitrogen container B (16), adsorbate gas access port (3), throttling valve (20), logical air interface (19) is installed and is constituted, it is characterized in that: the front end at gas concentration sensor A (5) is equipped with carrier gas flow stabilizing valve (2), adsorbate gas flow stabilizing valve (4), between gas concentration sensor A (5) and gas concentration sensor B (13), transfer valve C (9) and the transfer valve D (12) that is connected with the front and back of testing tube A (10) is housed, the transfer valve F (18) and the transfer valve E (15) that are connected with the front and back of testing tube B (17), between the front end of transfer valve C (9) and throttling valve (20), transfer valve A (6) and transfer valve B (7) are housed, injecting type injector and interface (8) are housed between transfer valve A (6) and transfer valve B (7).
2, a kind of powder specific surface area tester as claimed in claim 1, it is characterized in that: transfer valve A (6), transfer valve B (7) are six-way valve, solenoid valve, and transfer valve C (9), transfer valve D (12), transfer valve E (15), transfer valve F (18) are six-way valve, solenoid valve, hand valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034893 CN200941089Y (en) | 2005-07-21 | 2005-07-21 | Spekker absorptiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034893 CN200941089Y (en) | 2005-07-21 | 2005-07-21 | Spekker absorptiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941089Y true CN200941089Y (en) | 2007-08-29 |
Family
ID=38747266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520034893 Expired - Fee Related CN200941089Y (en) | 2005-07-21 | 2005-07-21 | Spekker absorptiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200941089Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494982A (en) * | 2011-12-06 | 2012-06-13 | 天津市捷威动力工业有限公司 | Method for measuring specific surface area of microporous lithium iron phosphate |
| CN102721753A (en) * | 2011-03-31 | 2012-10-10 | 北京精微高博科学技术有限公司 | Cascade dynamic nitrogen adsorption instrument |
-
2005
- 2005-07-21 CN CN 200520034893 patent/CN200941089Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721753A (en) * | 2011-03-31 | 2012-10-10 | 北京精微高博科学技术有限公司 | Cascade dynamic nitrogen adsorption instrument |
| CN102721753B (en) * | 2011-03-31 | 2014-01-29 | 北京精微高博科学技术有限公司 | Cascade dynamic nitrogen adsorption instrument |
| CN102494982A (en) * | 2011-12-06 | 2012-06-13 | 天津市捷威动力工业有限公司 | Method for measuring specific surface area of microporous lithium iron phosphate |
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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: 20070829 Termination date: 20120721 |